diff options
Diffstat (limited to 'fs')
66 files changed, 2034 insertions, 479 deletions
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index eb82ee53ee0..d9a43674cb9 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -125,9 +125,8 @@ static void affs_fix_dcache(struct inode *inode, u32 entry_ino) { struct dentry *dentry; - struct hlist_node *p; spin_lock(&inode->i_lock); - hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) { if (entry_ino == (u32)(long)dentry->d_fsdata) { dentry->d_fsdata = (void *)inode->i_ino; break; @@ -591,11 +591,10 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) { struct mm_struct *mm = current->mm; struct kioctx *ctx, *ret = NULL; - struct hlist_node *n; rcu_read_lock(); - hlist_for_each_entry_rcu(ctx, n, &mm->ioctx_list, list) { + hlist_for_each_entry_rcu(ctx, &mm->ioctx_list, list) { /* * RCU protects us against accessing freed memory but * we have to be careful not to get a reference when the diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index d2a833999bc..83f2606c76d 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -816,10 +816,9 @@ static bool inode_has_hashed_dentries(struct inode *inode) { struct dentry *dentry; - struct hlist_node *p; spin_lock(&inode->i_lock); - hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) { if (!d_unhashed(dentry) || IS_ROOT(dentry)) { spin_unlock(&inode->i_lock); return true; diff --git a/fs/coredump.c b/fs/coredump.c index 69baf903d3b..c6479658d48 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -501,7 +501,7 @@ void do_coredump(siginfo_t *siginfo) * so we dump it as root in mode 2, and only into a controlled * environment (pipe handler or fully qualified path). */ - if (__get_dumpable(cprm.mm_flags) == SUID_DUMPABLE_SAFE) { + if (__get_dumpable(cprm.mm_flags) == SUID_DUMP_ROOT) { /* Setuid core dump mode */ flag = O_EXCL; /* Stop rewrite attacks */ cred->fsuid = GLOBAL_ROOT_UID; /* Dump root private */ diff --git a/fs/dcache.c b/fs/dcache.c index 68220dd0c13..fbfae008ba4 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -675,11 +675,10 @@ EXPORT_SYMBOL(dget_parent); static struct dentry *__d_find_alias(struct inode *inode, int want_discon) { struct dentry *alias, *discon_alias; - struct hlist_node *p; again: discon_alias = NULL; - hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(alias, &inode->i_dentry, d_alias) { spin_lock(&alias->d_lock); if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) { if (IS_ROOT(alias) && @@ -730,10 +729,9 @@ EXPORT_SYMBOL(d_find_alias); void d_prune_aliases(struct inode *inode) { struct dentry *dentry; - struct hlist_node *p; restart: spin_lock(&inode->i_lock); - hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) { spin_lock(&dentry->d_lock); if (!dentry->d_count) { __dget_dlock(dentry); @@ -1443,14 +1441,13 @@ static struct dentry *__d_instantiate_unique(struct dentry *entry, int len = entry->d_name.len; const char *name = entry->d_name.name; unsigned int hash = entry->d_name.hash; - struct hlist_node *p; if (!inode) { __d_instantiate(entry, NULL); return NULL; } - hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(alias, &inode->i_dentry, d_alias) { /* * Don't need alias->d_lock here, because aliases with * d_parent == entry->d_parent are not subject to name or diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index f7501651762..1b1146670c4 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -1183,7 +1183,7 @@ static void detach_lkb(struct dlm_lkb *lkb) static int create_lkb(struct dlm_ls *ls, struct dlm_lkb **lkb_ret) { struct dlm_lkb *lkb; - int rv, id; + int rv; lkb = dlm_allocate_lkb(ls); if (!lkb) @@ -1199,19 +1199,13 @@ static int create_lkb(struct dlm_ls *ls, struct dlm_lkb **lkb_ret) mutex_init(&lkb->lkb_cb_mutex); INIT_WORK(&lkb->lkb_cb_work, dlm_callback_work); - retry: - rv = idr_pre_get(&ls->ls_lkbidr, GFP_NOFS); - if (!rv) - return -ENOMEM; - + idr_preload(GFP_NOFS); spin_lock(&ls->ls_lkbidr_spin); - rv = idr_get_new_above(&ls->ls_lkbidr, lkb, 1, &id); - if (!rv) - lkb->lkb_id = id; + rv = idr_alloc(&ls->ls_lkbidr, lkb, 1, 0, GFP_NOWAIT); + if (rv >= 0) + lkb->lkb_id = rv; spin_unlock(&ls->ls_lkbidr_spin); - - if (rv == -EAGAIN) - goto retry; + idr_preload_end(); if (rv < 0) { log_error(ls, "create_lkb idr error %d", rv); diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index 2e99fb0c973..3ca79d3253b 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -796,7 +796,6 @@ static int release_lockspace(struct dlm_ls *ls, int force) */ idr_for_each(&ls->ls_lkbidr, lkb_idr_free, ls); - idr_remove_all(&ls->ls_lkbidr); idr_destroy(&ls->ls_lkbidr); /* diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index dd87a31bcc2..4f5ad246582 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -177,12 +177,11 @@ static inline int nodeid_hash(int nodeid) static struct connection *__find_con(int nodeid) { int r; - struct hlist_node *h; struct connection *con; r = nodeid_hash(nodeid); - hlist_for_each_entry(con, h, &connection_hash[r], list) { + hlist_for_each_entry(con, &connection_hash[r], list) { if (con->nodeid == nodeid) return con; } @@ -232,13 +231,12 @@ static struct connection *__nodeid2con(int nodeid, gfp_t alloc) static void foreach_conn(void (*conn_func)(struct connection *c)) { int i; - struct hlist_node *h, *n; + struct hlist_node *n; struct connection *con; for (i = 0; i < CONN_HASH_SIZE; i++) { - hlist_for_each_entry_safe(con, h, n, &connection_hash[i], list){ + hlist_for_each_entry_safe(con, n, &connection_hash[i], list) conn_func(con); - } } } @@ -257,13 +255,12 @@ static struct connection *nodeid2con(int nodeid, gfp_t allocation) static struct connection *assoc2con(int assoc_id) { int i; - struct hlist_node *h; struct connection *con; mutex_lock(&connections_lock); for (i = 0 ; i < CONN_HASH_SIZE; i++) { - hlist_for_each_entry(con, h, &connection_hash[i], list) { + hlist_for_each_entry(con, &connection_hash[i], list) { if (con->sctp_assoc == assoc_id) { mutex_unlock(&connections_lock); return con; diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c index aedea28a86a..a6bc63f6e31 100644 --- a/fs/dlm/recover.c +++ b/fs/dlm/recover.c @@ -305,27 +305,26 @@ static int recover_idr_empty(struct dlm_ls *ls) static int recover_idr_add(struct dlm_rsb *r) { struct dlm_ls *ls = r->res_ls; - int rv, id; - - rv = idr_pre_get(&ls->ls_recover_idr, GFP_NOFS); - if (!rv) - return -ENOMEM; + int rv; + idr_preload(GFP_NOFS); spin_lock(&ls->ls_recover_idr_lock); if (r->res_id) { - spin_unlock(&ls->ls_recover_idr_lock); - return -1; - } - rv = idr_get_new_above(&ls->ls_recover_idr, r, 1, &id); - if (rv) { - spin_unlock(&ls->ls_recover_idr_lock); - return rv; + rv = -1; + goto out_unlock; } - r->res_id = id; + rv = idr_alloc(&ls->ls_recover_idr, r, 1, 0, GFP_NOWAIT); + if (rv < 0) + goto out_unlock; + + r->res_id = rv; ls->ls_recover_list_count++; dlm_hold_rsb(r); + rv = 0; +out_unlock: spin_unlock(&ls->ls_recover_idr_lock); - return 0; + idr_preload_end(); + return rv; } static void recover_idr_del(struct dlm_rsb *r) @@ -351,24 +350,21 @@ static struct dlm_rsb *recover_idr_find(struct dlm_ls *ls, uint64_t id) return r; } -static int recover_idr_clear_rsb(int id, void *p, void *data) +static void recover_idr_clear(struct dlm_ls *ls) { - struct dlm_ls *ls = data; - struct dlm_rsb *r = p; + struct dlm_rsb *r; + int id; - r->res_id = 0; - r->res_recover_locks_count = 0; - ls->ls_recover_list_count--; + spin_lock(&ls->ls_recover_idr_lock); - dlm_put_rsb(r); - return 0; -} + idr_for_each_entry(&ls->ls_recover_idr, r, id) { + idr_remove(&ls->ls_recover_idr, id); + r->res_id = 0; + r->res_recover_locks_count = 0; + ls->ls_recover_list_count--; -static void recover_idr_clear(struct dlm_ls *ls) -{ - spin_lock(&ls->ls_recover_idr_lock); - idr_for_each(&ls->ls_recover_idr, recover_idr_clear_rsb, ls); - idr_remove_all(&ls->ls_recover_idr); + dlm_put_rsb(r); + } if (ls->ls_recover_list_count != 0) { log_error(ls, "warning: recover_list_count %d", diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c index 5fa2471796c..8d7a577ae49 100644 --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -115,10 +115,9 @@ void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx) */ int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon) { - struct hlist_node *elem; int rc; - hlist_for_each_entry(*daemon, elem, + hlist_for_each_entry(*daemon, &ecryptfs_daemon_hash[ecryptfs_current_euid_hash()], euid_chain) { if (uid_eq((*daemon)->file->f_cred->euid, current_euid())) { @@ -445,7 +444,6 @@ void ecryptfs_release_messaging(void) mutex_unlock(&ecryptfs_msg_ctx_lists_mux); } if (ecryptfs_daemon_hash) { - struct hlist_node *elem; struct ecryptfs_daemon *daemon; int i; @@ -453,7 +451,7 @@ void ecryptfs_release_messaging(void) for (i = 0; i < (1 << ecryptfs_hash_bits); i++) { int rc; - hlist_for_each_entry(daemon, elem, + hlist_for_each_entry(daemon, &ecryptfs_daemon_hash[i], euid_chain) { rc = ecryptfs_exorcise_daemon(daemon); diff --git a/fs/exec.c b/fs/exec.c index 864c50df660..a96a4885bbb 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1111,7 +1111,7 @@ void setup_new_exec(struct linux_binprm * bprm) current->sas_ss_sp = current->sas_ss_size = 0; if (uid_eq(current_euid(), current_uid()) && gid_eq(current_egid(), current_gid())) - set_dumpable(current->mm, SUID_DUMPABLE_ENABLED); + set_dumpable(current->mm, SUID_DUMP_USER); else set_dumpable(current->mm, suid_dumpable); @@ -1639,17 +1639,17 @@ EXPORT_SYMBOL(set_binfmt); void set_dumpable(struct mm_struct *mm, int value) { switch (value) { - case SUID_DUMPABLE_DISABLED: + case SUID_DUMP_DISABLE: clear_bit(MMF_DUMPABLE, &mm->flags); smp_wmb(); clear_bit(MMF_DUMP_SECURELY, &mm->flags); break; - case SUID_DUMPABLE_ENABLED: + case SUID_DUMP_USER: set_bit(MMF_DUMPABLE, &mm->flags); smp_wmb(); clear_bit(MMF_DUMP_SECURELY, &mm->flags); break; - case SUID_DUMPABLE_SAFE: + case SUID_DUMP_ROOT: set_bit(MMF_DUMP_SECURELY, &mm->flags); smp_wmb(); set_bit(MMF_DUMPABLE, &mm->flags); @@ -1662,7 +1662,7 @@ int __get_dumpable(unsigned long mm_flags) int ret; ret = mm_flags & MMF_DUMPABLE_MASK; - return (ret > SUID_DUMPABLE_ENABLED) ? SUID_DUMPABLE_SAFE : ret; + return (ret > SUID_DUMP_USER) ? SUID_DUMP_ROOT : ret; } int get_dumpable(struct mm_struct *mm) diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 5df4bb4aab1..262fc994098 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -44,14 +44,13 @@ find_acceptable_alias(struct dentry *result, { struct dentry *dentry, *toput = NULL; struct inode *inode; - struct hlist_node *p; if (acceptable(context, result)) return result; inode = result->d_inode; spin_lock(&inode->i_lock); - hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) { dget(dentry); spin_unlock(&inode->i_lock); if (toput) diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 12701a56775..e9cc3f0d58e 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -95,6 +95,8 @@ struct msdos_sb_info { spinlock_t dir_hash_lock; struct hlist_head dir_hashtable[FAT_HASH_SIZE]; + + unsigned int dirty; /* fs state before mount */ }; #define FAT_CACHE_VALID 0 /* special case for valid cache */ diff --git a/fs/fat/inode.c b/fs/fat/inode.c index f8f491677a4..acf6e479b44 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -341,12 +341,11 @@ struct inode *fat_iget(struct super_block *sb, loff_t i_pos) { struct msdos_sb_info *sbi = MSDOS_SB(sb); struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos); - struct hlist_node *_p; struct msdos_inode_info *i; struct inode *inode = NULL; spin_lock(&sbi->inode_hash_lock); - hlist_for_each_entry(i, _p, head, i_fat_hash) { + hlist_for_each_entry(i, head, i_fat_hash) { BUG_ON(i->vfs_inode.i_sb != sb); if (i->i_pos != i_pos) continue; @@ -488,10 +487,59 @@ static void fat_evict_inode(struct inode *inode) fat_detach(inode); } +static void fat_set_state(struct super_block *sb, + unsigned int set, unsigned int force) +{ + struct buffer_head *bh; + struct fat_boot_sector *b; + struct msdos_sb_info *sbi = sb->s_fs_info; + + /* do not change any thing if mounted read only */ + if ((sb->s_flags & MS_RDONLY) && !force) + return; + + /* do not change state if fs was dirty */ + if (sbi->dirty) { + /* warn only on set (mount). */ + if (set) + fat_msg(sb, KERN_WARNING, "Volume was not properly " + "unmounted. Some data may be corrupt. " + "Please run fsck."); + return; + } + + bh = sb_bread(sb, 0); + if (bh == NULL) { + fat_msg(sb, KERN_ERR, "unable to read boot sector " + "to mark fs as dirty"); + return; + } + + b = (struct fat_boot_sector *) bh->b_data; + + if (sbi->fat_bits == 32) { + if (set) + b->fat32.state |= FAT_STATE_DIRTY; + else + b->fat32.state &= ~FAT_STATE_DIRTY; + } else /* fat 16 and 12 */ { + if (set) + b->fat16.state |= FAT_STATE_DIRTY; + else + b->fat16.state &= ~FAT_STATE_DIRTY; + } + + mark_buffer_dirty(bh); + sync_dirty_buffer(bh); + brelse(bh); +} + static void fat_put_super(struct super_block *sb) { struct msdos_sb_info *sbi = MSDOS_SB(sb); + fat_set_state(sb, 0, 0); + iput(sbi->fsinfo_inode); iput(sbi->fat_inode); @@ -566,8 +614,18 @@ static void __exit fat_destroy_inodecache(void) static int fat_remount(struct super_block *sb, int *flags, char *data) { + int new_rdonly; struct msdos_sb_info *sbi = MSDOS_SB(sb); *flags |= MS_NODIRATIME | (sbi->options.isvfat ? 0 : MS_NOATIME); + + /* make sure we update state on remount. */ + new_rdonly = *flags & MS_RDONLY; + if (new_rdonly != (sb->s_flags & MS_RDONLY)) { + if (new_rdonly) + fat_set_state(sb, 0, 0); + else + fat_set_state(sb, 1, 1); + } return 0; } @@ -1298,17 +1356,17 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->prev_free = FAT_START_ENT; sb->s_maxbytes = 0xffffffff; - if (!sbi->fat_length && b->fat32_length) { + if (!sbi->fat_length && b->fat32.length) { struct fat_boot_fsinfo *fsinfo; struct buffer_head *fsinfo_bh; /* Must be FAT32 */ sbi->fat_bits = 32; - sbi->fat_length = le32_to_cpu(b->fat32_length); - sbi->root_cluster = le32_to_cpu(b->root_cluster); + sbi->fat_length = le32_to_cpu(b->fat32.length); + sbi->root_cluster = le32_to_cpu(b->fat32.root_cluster); /* MC - if info_sector is 0, don't multiply by 0 */ - sbi->fsinfo_sector = le16_to_cpu(b->info_sector); + sbi->fsinfo_sector = le16_to_cpu(b->fat32.info_sector); if (sbi->fsinfo_sector == 0) sbi->fsinfo_sector = 1; @@ -1362,6 +1420,12 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (sbi->fat_bits != 32) sbi->fat_bits = (total_clusters > MAX_FAT12) ? 16 : 12; + /* some OSes set FAT_STATE_DIRTY and clean it on unmount. */ + if (sbi->fat_bits == 32) + sbi->dirty = b->fat32.state & FAT_STATE_DIRTY; + else /* fat 16 or 12 */ + sbi->dirty = b->fat16.state & FAT_STATE_DIRTY; + /* check that FAT table does not overflow */ fat_clusters = sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits; total_clusters = min(total_clusters, fat_clusters - FAT_START_ENT); @@ -1456,6 +1520,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, "the device does not support discard"); } + fat_set_state(sb, 1, 0); return 0; out_invalid: diff --git a/fs/fat/nfs.c b/fs/fat/nfs.c index ef4b5faba87..499c10438ca 100644 --- a/fs/fat/nfs.c +++ b/fs/fat/nfs.c @@ -21,13 +21,12 @@ static struct inode *fat_dget(struct super_block *sb, int i_logstart) { struct msdos_sb_info *sbi = MSDOS_SB(sb); struct hlist_head *head; - struct hlist_node *_p; struct msdos_inode_info *i; struct inode *inode = NULL; head = sbi->dir_hashtable + fat_dir_hash(i_logstart); spin_lock(&sbi->dir_hash_lock); - hlist_for_each_entry(i, _p, head, i_dir_hash) { + hlist_for_each_entry(i, head, i_dir_hash) { BUG_ON(i->vfs_inode.i_sb != sb); if (i->i_logstart != i_logstart) continue; diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index 8dcb114758e..e2cba1f60c2 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -237,13 +237,12 @@ static int fscache_alloc_object(struct fscache_cache *cache, struct fscache_cookie *cookie) { struct fscache_object *object; - struct hlist_node *_n; int ret; _enter("%p,%p{%s}", cache, cookie, cookie->def->name); spin_lock(&cookie->lock); - hlist_for_each_entry(object, _n, &cookie->backing_objects, + hlist_for_each_entry(object, &cookie->backing_objects, cookie_link) { if (object->cache == cache) goto object_already_extant; @@ -311,7 +310,6 @@ static int fscache_attach_object(struct fscache_cookie *cookie, { struct fscache_object *p; struct fscache_cache *cache = object->cache; - struct hlist_node *_n; int ret; _enter("{%s},{OBJ%x}", cookie->def->name, object->debug_id); @@ -321,7 +319,7 @@ static int fscache_attach_object(struct fscache_cookie *cookie, /* there may be multiple initial creations of this object, but we only * want one */ ret = -EEXIST; - hlist_for_each_entry(p, _n, &cookie->backing_objects, cookie_link) { + hlist_for_each_entry(p, &cookie->backing_objects, cookie_link) { if (p->cache == object->cache) { if (p->state >= FSCACHE_OBJECT_DYING) ret = -ENOBUFS; @@ -331,7 +329,7 @@ static int fscache_attach_object(struct fscache_cookie *cookie, /* pin the parent object */ spin_lock_nested(&cookie->parent->lock, 1); - hlist_for_each_entry(p, _n, &cookie->parent->backing_objects, + hlist_for_each_entry(p, &cookie->parent->backing_objects, cookie_link) { if (p->cache == object->cache) { if (p->state >= FSCACHE_OBJECT_DYING) { @@ -435,7 +433,6 @@ EXPORT_SYMBOL(__fscache_wait_on_invalidate); void __fscache_update_cookie(struct fscache_cookie *cookie) { struct fscache_object *object; - struct hlist_node *_p; fscache_stat(&fscache_n_updates); @@ -452,7 +449,7 @@ void __fscache_update_cookie(struct fscache_cookie *cookie) spin_lock(&cookie->lock); /* update the index entry on disk in each cache backing this cookie */ - hlist_for_each_entry(object, _p, + hlist_for_each_entry(object, &cookie->backing_objects, cookie_link) { fscache_raise_event(object, FSCACHE_OBJECT_EV_UPDATE); } diff --git a/fs/hfsplus/Makefile b/fs/hfsplus/Makefile index 3cc0df73015..09d278bb7b9 100644 --- a/fs/hfsplus/Makefile +++ b/fs/hfsplus/Makefile @@ -5,5 +5,5 @@ obj-$(CONFIG_HFSPLUS_FS) += hfsplus.o hfsplus-objs := super.o options.o inode.o ioctl.o extents.o catalog.o dir.o btree.o \ - bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o - + bnode.o brec.o bfind.o tables.o unicode.o wrapper.o bitmap.o part_tbl.o \ + attributes.o xattr.o xattr_user.o xattr_security.o xattr_trusted.o diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c new file mode 100644 index 00000000000..8d691f12471 --- /dev/null +++ b/fs/hfsplus/attributes.c @@ -0,0 +1,399 @@ +/* + * linux/fs/hfsplus/attributes.c + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Handling of records in attributes tree + */ + +#include "hfsplus_fs.h" +#include "hfsplus_raw.h" + +static struct kmem_cache *hfsplus_attr_tree_cachep; + +int hfsplus_create_attr_tree_cache(void) +{ + if (hfsplus_attr_tree_cachep) + return -EEXIST; + + hfsplus_attr_tree_cachep = + kmem_cache_create("hfsplus_attr_cache", + sizeof(hfsplus_attr_entry), 0, + SLAB_HWCACHE_ALIGN, NULL); + if (!hfsplus_attr_tree_cachep) + return -ENOMEM; + + return 0; +} + +void hfsplus_destroy_attr_tree_cache(void) +{ + kmem_cache_destroy(hfsplus_attr_tree_cachep); +} + +int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2) +{ + __be32 k1_cnid, k2_cnid; + + k1_cnid = k1->attr.cnid; + k2_cnid = k2->attr.cnid; + if (k1_cnid != k2_cnid) + return be32_to_cpu(k1_cnid) < be32_to_cpu(k2_cnid) ? -1 : 1; + + return hfsplus_strcmp( + (const struct hfsplus_unistr *)&k1->attr.key_name, + (const struct hfsplus_unistr *)&k2->attr.key_name); +} + +int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 cnid, const char *name) +{ + int len; + + memset(key, 0, sizeof(struct hfsplus_attr_key)); + key->attr.cnid = cpu_to_be32(cnid); + if (name) { + len = strlen(name); + if (len > HFSPLUS_ATTR_MAX_STRLEN) { + printk(KERN_ERR "hfs: invalid xattr name's length\n"); + return -EINVAL; + } + hfsplus_asc2uni(sb, + (struct hfsplus_unistr *)&key->attr.key_name, + HFSPLUS_ATTR_MAX_STRLEN, name, len); + len = be16_to_cpu(key->attr.key_name.length); + } else { + key->attr.key_name.length = 0; + len = 0; + } + + /* The length of the key, as stored in key_len field, does not include + * the size of the key_len field itself. + * So, offsetof(hfsplus_attr_key, key_name) is a trick because + * it takes into consideration key_len field (__be16) of + * hfsplus_attr_key structure instead of length field (__be16) of + * hfsplus_attr_unistr structure. + */ + key->key_len = + cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) + + 2 * len); + + return 0; +} + +void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, + u32 cnid, + struct hfsplus_attr_unistr *name) +{ + int ustrlen; + + memset(key, 0, sizeof(struct hfsplus_attr_key)); + ustrlen = be16_to_cpu(name->length); + key->attr.cnid = cpu_to_be32(cnid); + key->attr.key_name.length = cpu_to_be16(ustrlen); + ustrlen *= 2; + memcpy(key->attr.key_name.unicode, name->unicode, ustrlen); + + /* The length of the key, as stored in key_len field, does not include + * the size of the key_len field itself. + * So, offsetof(hfsplus_attr_key, key_name) is a trick because + * it takes into consideration key_len field (__be16) of + * hfsplus_attr_key structure instead of length field (__be16) of + * hfsplus_attr_unistr structure. + */ + key->key_len = + cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) + + ustrlen); +} + +hfsplus_attr_entry *hfsplus_alloc_attr_entry(void) +{ + return kmem_cache_alloc(hfsplus_attr_tree_cachep, GFP_KERNEL); +} + +void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry) +{ + if (entry) + kmem_cache_free(hfsplus_attr_tree_cachep, entry); +} + +#define HFSPLUS_INVALID_ATTR_RECORD -1 + +static int hfsplus_attr_build_record(hfsplus_attr_entry *entry, int record_type, + u32 cnid, const void *value, size_t size) +{ + if (record_type == HFSPLUS_ATTR_FORK_DATA) { + /* + * Mac OS X supports only inline data attributes. + * Do nothing + */ + memset(entry, 0, sizeof(*entry)); + return sizeof(struct hfsplus_attr_fork_data); + } else if (record_type == HFSPLUS_ATTR_EXTENTS) { + /* + * Mac OS X supports only inline data attributes. + * Do nothing. + */ + memset(entry, 0, sizeof(*entry)); + return sizeof(struct hfsplus_attr_extents); + } else if (record_type == HFSPLUS_ATTR_INLINE_DATA) { + u16 len; + + memset(entry, 0, sizeof(struct hfsplus_attr_inline_data)); + entry->inline_data.record_type = cpu_to_be32(record_type); + if (size <= HFSPLUS_MAX_INLINE_DATA_SIZE) + len = size; + else + return HFSPLUS_INVALID_ATTR_RECORD; + entry->inline_data.length = cpu_to_be16(len); + memcpy(entry->inline_data.raw_bytes, value, len); + /* + * Align len on two-byte boundary. + * It needs to add pad byte if we have odd len. + */ + len = round_up(len, 2); + return offsetof(struct hfsplus_attr_inline_data, raw_bytes) + + len; + } else /* invalid input */ + memset(entry, 0, sizeof(*entry)); + + return HFSPLUS_INVALID_ATTR_RECORD; +} + +int hfsplus_find_attr(struct super_block *sb, u32 cnid, + const char *name, struct hfs_find_data *fd) +{ + int err = 0; + + dprint(DBG_ATTR_MOD, "find_attr: %s,%d\n", name ? name : NULL, cnid); + + if (!HFSPLUS_SB(sb)->attr_tree) { + printk(KERN_ERR "hfs: attributes file doesn't exist\n"); + return -EINVAL; + } + + if (name) { + err = hfsplus_attr_build_key(sb, fd->search_key, cnid, name); + if (err) + goto failed_find_attr; + err = hfs_brec_find(fd, hfs_find_rec_by_key); + if (err) + goto failed_find_attr; + } else { + err = hfsplus_attr_build_key(sb, fd->search_key, cnid, NULL); + if (err) + goto failed_find_attr; + err = hfs_brec_find(fd, hfs_find_1st_rec_by_cnid); + if (err) + goto failed_find_attr; + } + +failed_find_attr: + return err; +} + +int hfsplus_attr_exists(struct inode *inode, const char *name) +{ + int err = 0; + struct super_block *sb = inode->i_sb; + struct hfs_find_data fd; + + if (!HFSPLUS_SB(sb)->attr_tree) + return 0; + + err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd); + if (err) + return 0; + + err = hfsplus_find_attr(sb, inode->i_ino, name, &fd); + if (err) + goto attr_not_found; + + hfs_find_exit(&fd); + return 1; + +attr_not_found: + hfs_find_exit(&fd); + return 0; +} + +int hfsplus_create_attr(struct inode *inode, + const char *name, + const void *value, size_t size) +{ + struct super_block *sb = inode->i_sb; + struct hfs_find_data fd; + hfsplus_attr_entry *entry_ptr; + int entry_size; + int err; + + dprint(DBG_ATTR_MOD, "create_attr: %s,%ld\n", + name ? name : NULL, inode->i_ino); + + if (!HFSPLUS_SB(sb)->attr_tree) { + printk(KERN_ERR "hfs: attributes file doesn't exist\n"); + return -EINVAL; + } + + entry_ptr = hfsplus_alloc_attr_entry(); + if (!entry_ptr) + return -ENOMEM; + + err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd); + if (err) + goto failed_init_create_attr; + + if (name) { + err = hfsplus_attr_build_key(sb, fd.search_key, + inode->i_ino, name); + if (err) + goto failed_create_attr; + } else { + err = -EINVAL; + goto failed_create_attr; + } + + /* Mac OS X supports only inline data attributes. */ + entry_size = hfsplus_attr_build_record(entry_ptr, + HFSPLUS_ATTR_INLINE_DATA, + inode->i_ino, + value, size); + if (entry_size == HFSPLUS_INVALID_ATTR_RECORD) { + err = -EINVAL; + goto failed_create_attr; + } + + err = hfs_brec_find(&fd, hfs_find_rec_by_key); + if (err != -ENOENT) { + if (!err) + err = -EEXIST; + goto failed_create_attr; + } + + err = hfs_brec_insert(&fd, entry_ptr, entry_size); + if (err) + goto failed_create_attr; + + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ATTR_DIRTY); + +failed_create_attr: + hfs_find_exit(&fd); + +failed_init_create_attr: + hfsplus_destroy_attr_entry(entry_ptr); + return err; +} + +static int __hfsplus_delete_attr(struct inode *inode, u32 cnid, + struct hfs_find_data *fd) +{ + int err = 0; + __be32 found_cnid, record_type; + + hfs_bnode_read(fd->bnode, &found_cnid, + fd->keyoffset + + offsetof(struct hfsplus_attr_key, cnid), + sizeof(__be32)); + if (cnid != be32_to_cpu(found_cnid)) + return -ENOENT; + + hfs_bnode_read(fd->bnode, &record_type, + fd->entryoffset, sizeof(record_type)); + + switch (be32_to_cpu(record_type)) { + case HFSPLUS_ATTR_INLINE_DATA: + /* All is OK. Do nothing. */ + break; + case HFSPLUS_ATTR_FORK_DATA: + case HFSPLUS_ATTR_EXTENTS: + printk(KERN_ERR "hfs: only inline data xattr are supported\n"); + return -EOPNOTSUPP; + default: + printk(KERN_ERR "hfs: invalid extended attribute record\n"); + return -ENOENT; + } + + err = hfs_brec_remove(fd); + if (err) + return err; + + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ATTR_DIRTY); + return err; +} + +int hfsplus_delete_attr(struct inode *inode, const char *name) +{ + int err = 0; + struct super_block *sb = inode->i_sb; + struct hfs_find_data fd; + + dprint(DBG_ATTR_MOD, "delete_attr: %s,%ld\n", + name ? name : NULL, inode->i_ino); + + if (!HFSPLUS_SB(sb)->attr_tree) { + printk(KERN_ERR "hfs: attributes file doesn't exist\n"); + return -EINVAL; + } + + err = hfs_find_init(HFSPLUS_SB(sb)->attr_tree, &fd); + if (err) + return err; + + if (name) { + err = hfsplus_attr_build_key(sb, fd.search_key, + inode->i_ino, name); + if (err) + goto out; + } else { + printk(KERN_ERR "hfs: invalid extended attribute name\n"); + err = -EINVAL; + goto out; + } + + err = hfs_brec_find(&fd, hfs_find_rec_by_key); + if (err) + goto out; + + err = __hfsplus_delete_attr(inode, inode->i_ino, &fd); + if (err) + goto out; + +out: + hfs_find_exit(&fd); + return err; +} + +int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid) +{ + int err = 0; + struct hfs_find_data fd; + + dprint(DBG_ATTR_MOD, "delete_all_attrs: %d\n", cnid); + + if (!HFSPLUS_SB(dir->i_sb)->attr_tree) { + printk(KERN_ERR "hfs: attributes file doesn't exist\n"); + return -EINVAL; + } + + err = hfs_find_init(HFSPLUS_SB(dir->i_sb)->attr_tree, &fd); + if (err) + return err; + + for (;;) { + err = hfsplus_find_attr(dir->i_sb, cnid, NULL, &fd); + if (err) { + if (err != -ENOENT) + printk(KERN_ERR "hfs: xattr search failed.\n"); + goto end_delete_all; + } + + err = __hfsplus_delete_attr(dir, cnid, &fd); + if (err) + goto end_delete_all; + } + +end_delete_all: + hfs_find_exit(&fd); + return err; +} diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c index 5d799c13205..d73c98d1ee9 100644 --- a/fs/hfsplus/bfind.c +++ b/fs/hfsplus/bfind.c @@ -24,7 +24,19 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd) fd->key = ptr + tree->max_key_len + 2; dprint(DBG_BNODE_REFS, "find_init: %d (%p)\n", tree->cnid, __builtin_return_address(0)); - mutex_lock(&tree->tree_lock); + switch (tree->cnid) { + case HFSPLUS_CAT_CNID: + mutex_lock_nested(&tree->tree_lock, CATALOG_BTREE_MUTEX); + break; + case HFSPLUS_EXT_CNID: + mutex_lock_nested(&tree->tree_lock, EXTENTS_BTREE_MUTEX); + break; + case HFSPLUS_ATTR_CNID: + mutex_lock_nested(&tree->tree_lock, ATTR_BTREE_MUTEX); + break; + default: + BUG(); + } return 0; } @@ -38,15 +50,73 @@ void hfs_find_exit(struct hfs_find_data *fd) fd->tree = NULL; } -/* Find the record in bnode that best matches key (not greater than...)*/ -int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd) +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *bnode, + struct hfs_find_data *fd, + int *begin, + int *end, + int *cur_rec) +{ + __be32 cur_cnid, search_cnid; + + if (bnode->tree->cnid == HFSPLUS_EXT_CNID) { + cur_cnid = fd->key->ext.cnid; + search_cnid = fd->search_key->ext.cnid; + } else if (bnode->tree->cnid == HFSPLUS_CAT_CNID) { + cur_cnid = fd->key->cat.parent; + search_cnid = fd->search_key->cat.parent; + } else if (bnode->tree->cnid == HFSPLUS_ATTR_CNID) { + cur_cnid = fd->key->attr.cnid; + search_cnid = fd->search_key->attr.cnid; + } else + BUG(); + + if (cur_cnid == search_cnid) { + (*end) = (*cur_rec); + if ((*begin) == (*end)) + return 1; + } else { + if (be32_to_cpu(cur_cnid) < be32_to_cpu(search_cnid)) + (*begin) = (*cur_rec) + 1; + else + (*end) = (*cur_rec) - 1; + } + + return 0; +} + +int hfs_find_rec_by_key(struct hfs_bnode *bnode, + struct hfs_find_data *fd, + int *begin, + int *end, + int *cur_rec) { int cmpval; + + cmpval = bnode->tree->keycmp(fd->key, fd->search_key); + if (!cmpval) { + (*end) = (*cur_rec); + return 1; + } + if (cmpval < 0) + (*begin) = (*cur_rec) + 1; + else + *(end) = (*cur_rec) - 1; + + return 0; +} + +/* Find the record in bnode that best matches key (not greater than...)*/ +int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd, + search_strategy_t rec_found) +{ u16 off, len, keylen; int rec; int b, e; int res; + if (!rec_found) + BUG(); + b = 0; e = bnode->num_recs - 1; res = -ENOENT; @@ -59,17 +129,12 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd) goto fail; } hfs_bnode_read(bnode, fd->key, off, keylen); - cmpval = bnode->tree->keycmp(fd->key, fd->search_key); - if (!cmpval) { - e = rec; + if (rec_found(bnode, fd, &b, &e, &rec)) { res = 0; goto done; } - if (cmpval < 0) - b = rec + 1; - else - e = rec - 1; } while (b <= e); + if (rec != e && e >= 0) { len = hfs_brec_lenoff(bnode, e, &off); keylen = hfs_brec_keylen(bnode, e); @@ -79,19 +144,21 @@ int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd) } hfs_bnode_read(bnode, fd->key, off, keylen); } + done: fd->record = e; fd->keyoffset = off; fd->keylength = keylen; fd->entryoffset = off + keylen; fd->entrylength = len - keylen; + fail: return res; } /* Traverse a B*Tree from the root to a leaf finding best fit to key */ /* Return allocated copy of node found, set recnum to best record */ -int hfs_brec_find(struct hfs_find_data *fd) +int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare) { struct hfs_btree *tree; struct hfs_bnode *bnode; @@ -122,7 +189,7 @@ int hfs_brec_find(struct hfs_find_data *fd) goto invalid; bnode->parent = parent; - res = __hfs_brec_find(bnode, fd); + res = __hfs_brec_find(bnode, fd, do_key_compare); if (!height) break; if (fd->record < 0) @@ -149,7 +216,7 @@ int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len) { int res; - res = hfs_brec_find(fd); + res = hfs_brec_find(fd, hfs_find_rec_by_key); if (res) return res; if (fd->entrylength > rec_len) diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c index 1c42cc5b899..f31ac6f404f 100644 --- a/fs/hfsplus/bnode.c +++ b/fs/hfsplus/bnode.c @@ -62,7 +62,8 @@ void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off) tree = node->tree; if (node->type == HFS_NODE_LEAF || - tree->attributes & HFS_TREE_VARIDXKEYS) + tree->attributes & HFS_TREE_VARIDXKEYS || + node->tree->cnid == HFSPLUS_ATTR_CNID) key_len = hfs_bnode_read_u16(node, off) + 2; else key_len = tree->max_key_len + 2; @@ -314,7 +315,8 @@ void hfs_bnode_dump(struct hfs_bnode *node) if (i && node->type == HFS_NODE_INDEX) { int tmp; - if (node->tree->attributes & HFS_TREE_VARIDXKEYS) + if (node->tree->attributes & HFS_TREE_VARIDXKEYS || + node->tree->cnid == HFSPLUS_ATTR_CNID) tmp = hfs_bnode_read_u16(node, key_off) + 2; else tmp = node->tree->max_key_len + 2; @@ -646,6 +648,8 @@ void hfs_bnode_put(struct hfs_bnode *node) if (test_bit(HFS_BNODE_DELETED, &node->flags)) { hfs_bnode_unhash(node); spin_unlock(&tree->hash_lock); + hfs_bnode_clear(node, 0, + PAGE_CACHE_SIZE * tree->pages_per_bnode); hfs_bmap_free(node); hfs_bnode_free(node); return; diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c index 2a734cfccc9..298d4e45604 100644 --- a/fs/hfsplus/brec.c +++ b/fs/hfsplus/brec.c @@ -36,7 +36,8 @@ u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec) return 0; if ((node->type == HFS_NODE_INDEX) && - !(node->tree->attributes & HFS_TREE_VARIDXKEYS)) { + !(node->tree->attributes & HFS_TREE_VARIDXKEYS) && + (node->tree->cnid != HFSPLUS_ATTR_CNID)) { retval = node->tree->max_key_len + 2; } else { recoff = hfs_bnode_read_u16(node, @@ -151,12 +152,13 @@ skip: /* get index key */ hfs_bnode_read_key(new_node, fd->search_key, 14); - __hfs_brec_find(fd->bnode, fd); + __hfs_brec_find(fd->bnode, fd, hfs_find_rec_by_key); hfs_bnode_put(new_node); new_node = NULL; - if (tree->attributes & HFS_TREE_VARIDXKEYS) + if ((tree->attributes & HFS_TREE_VARIDXKEYS) || + (tree->cnid == HFSPLUS_ATTR_CNID)) key_len = be16_to_cpu(fd->search_key->key_len) + 2; else { fd->search_key->key_len = @@ -201,7 +203,7 @@ again: hfs_bnode_put(node); node = fd->bnode = parent; - __hfs_brec_find(node, fd); + __hfs_brec_find(node, fd, hfs_find_rec_by_key); goto again; } hfs_bnode_write_u16(node, @@ -367,12 +369,13 @@ again: parent = hfs_bnode_find(tree, node->parent); if (IS_ERR(parent)) return PTR_ERR(parent); - __hfs_brec_find(parent, fd); + __hfs_brec_find(parent, fd, hfs_find_rec_by_key); hfs_bnode_dump(parent); rec = fd->record; /* size difference between old and new key */ - if (tree->attributes & HFS_TREE_VARIDXKEYS) + if ((tree->attributes & HFS_TREE_VARIDXKEYS) || + (tree->cnid == HFSPLUS_ATTR_CNID)) newkeylen = hfs_bnode_read_u16(node, 14) + 2; else fd->keylength = newkeylen = tree->max_key_len + 2; @@ -427,7 +430,7 @@ skip: hfs_bnode_read_key(new_node, fd->search_key, 14); cnid = cpu_to_be32(new_node->this); - __hfs_brec_find(fd->bnode, fd); + __hfs_brec_find(fd->bnode, fd, hfs_find_rec_by_key); hfs_brec_insert(fd, &cnid, sizeof(cnid)); hfs_bnode_put(fd->bnode); hfs_bnode_put(new_node); @@ -495,13 +498,15 @@ static int hfs_btree_inc_height(struct hfs_btree *tree) /* insert old root idx into new root */ node->parent = tree->root; if (node->type == HFS_NODE_LEAF || - tree->attributes & HFS_TREE_VARIDXKEYS) + tree->attributes & HFS_TREE_VARIDXKEYS || + tree->cnid == HFSPLUS_ATTR_CNID) key_size = hfs_bnode_read_u16(node, 14) + 2; else key_size = tree->max_key_len + 2; hfs_bnode_copy(new_node, 14, node, 14, key_size); - if (!(tree->attributes & HFS_TREE_VARIDXKEYS)) { + if (!(tree->attributes & HFS_TREE_VARIDXKEYS) && + (tree->cnid != HFSPLUS_ATTR_CNID)) { key_size = tree->max_key_len + 2; hfs_bnode_write_u16(new_node, 14, tree->max_key_len); } diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 685d07d0ed1..efb689c21a9 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -98,6 +98,14 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id) set_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags); } break; + case HFSPLUS_ATTR_CNID: + if (tree->max_key_len != HFSPLUS_ATTR_KEYLEN - sizeof(u16)) { + printk(KERN_ERR "hfs: invalid attributes max_key_len %d\n", + tree->max_key_len); + goto fail_page; + } + tree->keycmp = hfsplus_attr_bin_cmp_key; + break; default: printk(KERN_ERR "hfs: unknown B*Tree requested\n"); goto fail_page; diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c index 798d9c4c5e7..840d71edd19 100644 --- a/fs/hfsplus/catalog.c +++ b/fs/hfsplus/catalog.c @@ -45,7 +45,8 @@ void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key, key->cat.parent = cpu_to_be32(parent); if (str) { - hfsplus_asc2uni(sb, &key->cat.name, str->name, str->len); + hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN, + str->name, str->len); len = be16_to_cpu(key->cat.name.length); } else { key->cat.name.length = 0; @@ -167,7 +168,8 @@ static int hfsplus_fill_cat_thread(struct super_block *sb, entry->type = cpu_to_be16(type); entry->thread.reserved = 0; entry->thread.parentID = cpu_to_be32(parentid); - hfsplus_asc2uni(sb, &entry->thread.nodeName, str->name, str->len); + hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN, + str->name, str->len); return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2; } @@ -198,7 +200,7 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid, hfsplus_cat_build_key_uni(fd->search_key, be32_to_cpu(tmp.thread.parentID), &tmp.thread.nodeName); - return hfs_brec_find(fd); + return hfs_brec_find(fd, hfs_find_rec_by_key); } int hfsplus_create_cat(u32 cnid, struct inode *dir, @@ -221,7 +223,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, S_ISDIR(inode->i_mode) ? HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD, dir->i_ino, str); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err != -ENOENT) { if (!err) err = -EEXIST; @@ -233,7 +235,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); entry_size = hfsplus_cat_build_record(&entry, cnid, inode); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err != -ENOENT) { /* panic? */ if (!err) @@ -253,7 +255,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, err1: hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); - if (!hfs_brec_find(&fd)) + if (!hfs_brec_find(&fd, hfs_find_rec_by_key)) hfs_brec_remove(&fd); err2: hfs_find_exit(&fd); @@ -279,7 +281,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) int len; hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; @@ -296,7 +298,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) } else hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; @@ -326,7 +328,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) goto out; hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; @@ -337,6 +339,12 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str) dir->i_size--; dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); + + if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) { + if (HFSPLUS_SB(sb)->attr_tree) + hfsplus_delete_all_attrs(dir, cnid); + } + out: hfs_find_exit(&fd); @@ -363,7 +371,7 @@ int hfsplus_rename_cat(u32 cnid, /* find the old dir entry and read the data */ hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); - err = hfs_brec_find(&src_fd); + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); if (err) goto out; if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) { @@ -376,7 +384,7 @@ int hfsplus_rename_cat(u32 cnid, /* create new dir entry with the data from the old entry */ hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name); - err = hfs_brec_find(&dst_fd); + err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key); if (err != -ENOENT) { if (!err) err = -EEXIST; @@ -391,7 +399,7 @@ int hfsplus_rename_cat(u32 cnid, /* finally remove the old entry */ hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name); - err = hfs_brec_find(&src_fd); + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); if (err) goto out; err = hfs_brec_remove(&src_fd); @@ -402,7 +410,7 @@ int hfsplus_rename_cat(u32 cnid, /* remove old thread entry */ hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL); - err = hfs_brec_find(&src_fd); + err = hfs_brec_find(&src_fd, hfs_find_rec_by_key); if (err) goto out; type = hfs_bnode_read_u16(src_fd.bnode, src_fd.entryoffset); @@ -414,7 +422,7 @@ int hfsplus_rename_cat(u32 cnid, hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL); entry_size = hfsplus_fill_cat_thread(sb, &entry, type, dst_dir->i_ino, dst_name); - err = hfs_brec_find(&dst_fd); + err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key); if (err != -ENOENT) { if (!err) err = -EEXIST; diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 074e0458924..031c24e5052 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -15,6 +15,7 @@ #include "hfsplus_fs.h" #include "hfsplus_raw.h" +#include "xattr.h" static inline void hfsplus_instantiate(struct dentry *dentry, struct inode *inode, u32 cnid) @@ -138,7 +139,7 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) if (err) return err; hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL); - err = hfs_brec_find(&fd); + err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) goto out; @@ -421,6 +422,15 @@ static int hfsplus_symlink(struct inode *dir, struct dentry *dentry, if (res) goto out_err; + res = hfsplus_init_inode_security(inode, dir, &dentry->d_name); + if (res == -EOPNOTSUPP) + res = 0; /* Operation is not supported. */ + else if (res) { + /* Try to delete anyway without error analysis. */ + hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); + goto out_err; + } + hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); goto out; @@ -450,15 +460,26 @@ static int hfsplus_mknod(struct inode *dir, struct dentry *dentry, init_special_inode(inode, mode, rdev); res = hfsplus_create_cat(inode->i_ino, dir, &dentry->d_name, inode); - if (res) { - clear_nlink(inode); - hfsplus_delete_inode(inode); - iput(inode); - goto out; + if (res) + goto failed_mknod; + + res = hfsplus_init_inode_security(inode, dir, &dentry->d_name); + if (res == -EOPNOTSUPP) + res = 0; /* Operation is not supported. */ + else if (res) { + /* Try to delete anyway without error analysis. */ + hfsplus_delete_cat(inode->i_ino, dir, &dentry->d_name); + goto failed_mknod; } hfsplus_instantiate(dentry, inode, inode->i_ino); mark_inode_dirty(inode); + goto out; + +failed_mknod: + clear_nlink(inode); + hfsplus_delete_inode(inode); + iput(inode); out: mutex_unlock(&sbi->vh_mutex); return res; @@ -499,15 +520,19 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry, } const struct inode_operations hfsplus_dir_inode_operations = { - .lookup = hfsplus_lookup, - .create = hfsplus_create, - .link = hfsplus_link, - .unlink = hfsplus_unlink, - .mkdir = hfsplus_mkdir, - .rmdir = hfsplus_rmdir, - .symlink = hfsplus_symlink, - .mknod = hfsplus_mknod, - .rename = hfsplus_rename, + .lookup = hfsplus_lookup, + .create = hfsplus_create, + .link = hfsplus_link, + .unlink = hfsplus_unlink, + .mkdir = hfsplus_mkdir, + .rmdir = hfsplus_rmdir, + .symlink = hfsplus_symlink, + .mknod = hfsplus_mknod, + .rename = hfsplus_rename, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .listxattr = hfsplus_listxattr, + .removexattr = hfsplus_removexattr, }; const struct file_operations hfsplus_dir_operations = { diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index eba76eab6d6..a94f0f779d5 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -95,7 +95,7 @@ static void __hfsplus_ext_write_extent(struct inode *inode, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA); - res = hfs_brec_find(fd); + res = hfs_brec_find(fd, hfs_find_rec_by_key); if (hip->extent_state & HFSPLUS_EXT_NEW) { if (res != -ENOENT) return; @@ -154,7 +154,7 @@ static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd, hfsplus_ext_build_key(fd->search_key, cnid, block, type); fd->key->ext.cnid = 0; - res = hfs_brec_find(fd); + res = hfs_brec_find(fd, hfs_find_rec_by_key); if (res && res != -ENOENT) return res; if (fd->key->ext.cnid != fd->search_key->ext.cnid || diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index a6da86b1b4c..05b11f36024 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -23,6 +23,7 @@ #define DBG_SUPER 0x00000010 #define DBG_EXTENT 0x00000020 #define DBG_BITMAP 0x00000040 +#define DBG_ATTR_MOD 0x00000080 #if 0 #define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD) @@ -46,6 +47,13 @@ typedef int (*btree_keycmp)(const hfsplus_btree_key *, #define NODE_HASH_SIZE 256 +/* B-tree mutex nested subclasses */ +enum hfsplus_btree_mutex_classes { + CATALOG_BTREE_MUTEX, + EXTENTS_BTREE_MUTEX, + ATTR_BTREE_MUTEX, +}; + /* An HFS+ BTree held in memory */ struct hfs_btree { struct super_block *sb; @@ -223,6 +231,7 @@ struct hfsplus_inode_info { #define HFSPLUS_I_CAT_DIRTY 1 /* has changes in the catalog tree */ #define HFSPLUS_I_EXT_DIRTY 2 /* has changes in the extent tree */ #define HFSPLUS_I_ALLOC_DIRTY 3 /* has changes in the allocation file */ +#define HFSPLUS_I_ATTR_DIRTY 4 /* has changes in the attributes tree */ #define HFSPLUS_IS_RSRC(inode) \ test_bit(HFSPLUS_I_RSRC, &HFSPLUS_I(inode)->flags) @@ -302,7 +311,7 @@ static inline unsigned short hfsplus_min_io_size(struct super_block *sb) #define hfs_brec_remove hfsplus_brec_remove #define hfs_find_init hfsplus_find_init #define hfs_find_exit hfsplus_find_exit -#define __hfs_brec_find __hplusfs_brec_find +#define __hfs_brec_find __hfsplus_brec_find #define hfs_brec_find hfsplus_brec_find #define hfs_brec_read hfsplus_brec_read #define hfs_brec_goto hfsplus_brec_goto @@ -324,10 +333,33 @@ static inline unsigned short hfsplus_min_io_size(struct super_block *sb) */ #define HFSPLUS_IOC_BLESS _IO('h', 0x80) +typedef int (*search_strategy_t)(struct hfs_bnode *, + struct hfs_find_data *, + int *, int *, int *); + /* * Functions in any *.c used in other files */ +/* attributes.c */ +int hfsplus_create_attr_tree_cache(void); +void hfsplus_destroy_attr_tree_cache(void); +hfsplus_attr_entry *hfsplus_alloc_attr_entry(void); +void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry_p); +int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *, + const hfsplus_btree_key *); +int hfsplus_attr_build_key(struct super_block *, hfsplus_btree_key *, + u32, const char *); +void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, + u32 cnid, + struct hfsplus_attr_unistr *name); +int hfsplus_find_attr(struct super_block *, u32, + const char *, struct hfs_find_data *); +int hfsplus_attr_exists(struct inode *inode, const char *name); +int hfsplus_create_attr(struct inode *, const char *, const void *, size_t); +int hfsplus_delete_attr(struct inode *, const char *); +int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid); + /* bitmap.c */ int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); int hfsplus_block_free(struct super_block *, u32, u32); @@ -369,8 +401,15 @@ int hfs_brec_remove(struct hfs_find_data *); /* bfind.c */ int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); void hfs_find_exit(struct hfs_find_data *); -int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *); -int hfs_brec_find(struct hfs_find_data *); +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *, + struct hfs_find_data *, + int *, int *, int *); +int hfs_find_rec_by_key(struct hfs_bnode *, + struct hfs_find_data *, + int *, int *, int *); +int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *, + search_strategy_t); +int hfs_brec_find(struct hfs_find_data *, search_strategy_t); int hfs_brec_read(struct hfs_find_data *, void *, int); int hfs_brec_goto(struct hfs_find_data *, int); @@ -417,11 +456,6 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, /* ioctl.c */ long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); -int hfsplus_setxattr(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags); -ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, - void *value, size_t size); -ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); /* options.c */ int hfsplus_parse_options(char *, struct hfsplus_sb_info *); @@ -446,7 +480,7 @@ int hfsplus_strcmp(const struct hfsplus_unistr *, int hfsplus_uni2asc(struct super_block *, const struct hfsplus_unistr *, char *, int *); int hfsplus_asc2uni(struct super_block *, - struct hfsplus_unistr *, const char *, int); + struct hfsplus_unistr *, int, const char *, int); int hfsplus_hash_dentry(const struct dentry *dentry, const struct inode *inode, struct qstr *str); int hfsplus_compare_dentry(const struct dentry *parent, diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 921967e5abb..452ede01b03 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -52,13 +52,23 @@ typedef __be32 hfsplus_cnid; typedef __be16 hfsplus_unichr; +#define HFSPLUS_MAX_STRLEN 255 +#define HFSPLUS_ATTR_MAX_STRLEN 127 + /* A "string" as used in filenames, etc. */ struct hfsplus_unistr { __be16 length; - hfsplus_unichr unicode[255]; + hfsplus_unichr unicode[HFSPLUS_MAX_STRLEN]; } __packed; -#define HFSPLUS_MAX_STRLEN 255 +/* + * A "string" is used in attributes file + * for name of extended attribute + */ +struct hfsplus_attr_unistr { + __be16 length; + hfsplus_unichr unicode[HFSPLUS_ATTR_MAX_STRLEN]; +} __packed; /* POSIX permissions */ struct hfsplus_perm { @@ -291,6 +301,8 @@ struct hfsplus_cat_file { /* File attribute bits */ #define HFSPLUS_FILE_LOCKED 0x0001 #define HFSPLUS_FILE_THREAD_EXISTS 0x0002 +#define HFSPLUS_XATTR_EXISTS 0x0004 +#define HFSPLUS_ACL_EXISTS 0x0008 /* HFS+ catalog thread (part of a cat_entry) */ struct hfsplus_cat_thread { @@ -327,11 +339,63 @@ struct hfsplus_ext_key { #define HFSPLUS_EXT_KEYLEN sizeof(struct hfsplus_ext_key) +#define HFSPLUS_XATTR_FINDER_INFO_NAME "com.apple.FinderInfo" +#define HFSPLUS_XATTR_ACL_NAME "com.apple.system.Security" + +#define HFSPLUS_ATTR_INLINE_DATA 0x10 +#define HFSPLUS_ATTR_FORK_DATA 0x20 +#define HFSPLUS_ATTR_EXTENTS 0x30 + +/* HFS+ attributes tree key */ +struct hfsplus_attr_key { + __be16 key_len; + __be16 pad; + hfsplus_cnid cnid; + __be32 start_block; + struct hfsplus_attr_unistr key_name; +} __packed; + +#define HFSPLUS_ATTR_KEYLEN sizeof(struct hfsplus_attr_key) + +/* HFS+ fork data attribute */ +struct hfsplus_attr_fork_data { + __be32 record_type; + __be32 reserved; + struct hfsplus_fork_raw the_fork; +} __packed; + +/* HFS+ extension attribute */ +struct hfsplus_attr_extents { + __be32 record_type; + __be32 reserved; + struct hfsplus_extent extents; +} __packed; + +#define HFSPLUS_MAX_INLINE_DATA_SIZE 3802 + +/* HFS+ attribute inline data */ +struct hfsplus_attr_inline_data { + __be32 record_type; + __be32 reserved1; + u8 reserved2[6]; + __be16 length; + u8 raw_bytes[HFSPLUS_MAX_INLINE_DATA_SIZE]; +} __packed; + +/* A data record in the attributes tree */ +typedef union { + __be32 record_type; + struct hfsplus_attr_fork_data fork_data; + struct hfsplus_attr_extents extents; + struct hfsplus_attr_inline_data inline_data; +} __packed hfsplus_attr_entry; + /* HFS+ generic BTree key */ typedef union { __be16 key_len; struct hfsplus_cat_key cat; struct hfsplus_ext_key ext; + struct hfsplus_attr_key attr; } __packed hfsplus_btree_key; #endif diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index dcd05be5344..160ccc9cdb4 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -17,6 +17,7 @@ #include "hfsplus_fs.h" #include "hfsplus_raw.h" +#include "xattr.h" static int hfsplus_readpage(struct file *file, struct page *page) { @@ -348,6 +349,18 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, error = error2; } + if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { + if (sbi->attr_tree) { + error2 = + filemap_write_and_wait( + sbi->attr_tree->inode->i_mapping); + if (!error) + error = error2; + } else { + printk(KERN_ERR "hfs: sync non-existent attributes tree\n"); + } + } + if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); if (!error) @@ -365,9 +378,10 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, static const struct inode_operations hfsplus_file_inode_operations = { .lookup = hfsplus_file_lookup, .setattr = hfsplus_setattr, - .setxattr = hfsplus_setxattr, - .getxattr = hfsplus_getxattr, + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, .listxattr = hfsplus_listxattr, + .removexattr = hfsplus_removexattr, }; static const struct file_operations hfsplus_file_operations = { diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c index e3c4c420942..d3ff5cc317d 100644 --- a/fs/hfsplus/ioctl.c +++ b/fs/hfsplus/ioctl.c @@ -16,7 +16,6 @@ #include <linux/fs.h> #include <linux/mount.h> #include <linux/sched.h> -#include <linux/xattr.h> #include <asm/uaccess.h> #include "hfsplus_fs.h" @@ -151,110 +150,3 @@ long hfsplus_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return -ENOTTY; } } - -int hfsplus_setxattr(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags) -{ - struct inode *inode = dentry->d_inode; - struct hfs_find_data fd; - hfsplus_cat_entry entry; - struct hfsplus_cat_file *file; - int res; - - if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode)) - return -EOPNOTSUPP; - - res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); - if (res) - return res; - res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); - if (res) - goto out; - hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, - sizeof(struct hfsplus_cat_file)); - file = &entry.file; - - if (!strcmp(name, "hfs.type")) { - if (size == 4) - memcpy(&file->user_info.fdType, value, 4); - else - res = -ERANGE; - } else if (!strcmp(name, "hfs.creator")) { - if (size == 4) - memcpy(&file->user_info.fdCreator, value, 4); - else - res = -ERANGE; - } else - res = -EOPNOTSUPP; - if (!res) { - hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, - sizeof(struct hfsplus_cat_file)); - hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY); - } -out: - hfs_find_exit(&fd); - return res; -} - -ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, - void *value, size_t size) -{ - struct inode *inode = dentry->d_inode; - struct hfs_find_data fd; - hfsplus_cat_entry entry; - struct hfsplus_cat_file *file; - ssize_t res = 0; - - if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode)) - return -EOPNOTSUPP; - - if (size) { - res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); - if (res) - return res; - res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); - if (res) - goto out; - hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, - sizeof(struct hfsplus_cat_file)); - } - file = &entry.file; - - if (!strcmp(name, "hfs.type")) { - if (size >= 4) { - memcpy(value, &file->user_info.fdType, 4); - res = 4; - } else - res = size ? -ERANGE : 4; - } else if (!strcmp(name, "hfs.creator")) { - if (size >= 4) { - memcpy(value, &file->user_info.fdCreator, 4); - res = 4; - } else - res = size ? -ERANGE : 4; - } else - res = -EOPNOTSUPP; -out: - if (size) - hfs_find_exit(&fd); - return res; -} - -#define HFSPLUS_ATTRLIST_SIZE (sizeof("hfs.creator")+sizeof("hfs.type")) - -ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) -{ - struct inode *inode = dentry->d_inode; - - if (!S_ISREG(inode->i_mode) || HFSPLUS_IS_RSRC(inode)) - return -EOPNOTSUPP; - - if (!buffer || !size) - return HFSPLUS_ATTRLIST_SIZE; - if (size < HFSPLUS_ATTRLIST_SIZE) - return -ERANGE; - strcpy(buffer, "hfs.type"); - strcpy(buffer + sizeof("hfs.type"), "hfs.creator"); - - return HFSPLUS_ATTRLIST_SIZE; -} diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 796198d2655..974c26f96fa 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -20,6 +20,7 @@ static struct inode *hfsplus_alloc_inode(struct super_block *sb); static void hfsplus_destroy_inode(struct inode *inode); #include "hfsplus_fs.h" +#include "xattr.h" static int hfsplus_system_read_inode(struct inode *inode) { @@ -118,6 +119,7 @@ static int hfsplus_system_write_inode(struct inode *inode) case HFSPLUS_ATTR_CNID: fork = &vhdr->attr_file; tree = sbi->attr_tree; + break; default: return -EIO; } @@ -191,6 +193,12 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait) error2 = filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); if (!error) error = error2; + if (sbi->attr_tree) { + error2 = + filemap_write_and_wait(sbi->attr_tree->inode->i_mapping); + if (!error) + error = error2; + } error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); if (!error) error = error2; @@ -281,6 +289,7 @@ static void hfsplus_put_super(struct super_block *sb) hfsplus_sync_fs(sb, 1); } + hfs_btree_close(sbi->attr_tree); hfs_btree_close(sbi->cat_tree); hfs_btree_close(sbi->ext_tree); iput(sbi->alloc_file); @@ -477,12 +486,20 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) printk(KERN_ERR "hfs: failed to load catalog file\n"); goto out_close_ext_tree; } + if (vhdr->attr_file.total_blocks != 0) { + sbi->attr_tree = hfs_btree_open(sb, HFSPLUS_ATTR_CNID); + if (!sbi->attr_tree) { + printk(KERN_ERR "hfs: failed to load attributes file\n"); + goto out_close_cat_tree; + } + } + sb->s_xattr = hfsplus_xattr_handlers; inode = hfsplus_iget(sb, HFSPLUS_ALLOC_CNID); if (IS_ERR(inode)) { printk(KERN_ERR "hfs: failed to load allocation file\n"); err = PTR_ERR(inode); - goto out_close_cat_tree; + goto out_close_attr_tree; } sbi->alloc_file = inode; @@ -542,10 +559,27 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent) } err = hfsplus_create_cat(sbi->hidden_dir->i_ino, root, &str, sbi->hidden_dir); - mutex_unlock(&sbi->vh_mutex); - if (err) + if (err) { + mutex_unlock(&sbi->vh_mutex); + goto out_put_hidden_dir; + } + + err = hfsplus_init_inode_security(sbi->hidden_dir, + root, &str); + if (err == -EOPNOTSUPP) + err = 0; /* Operation is not supported. */ + else if (err) { + /* + * Try to delete anyway without + * error analysis. + */ + hfsplus_delete_cat(sbi->hidden_dir->i_ino, + root, &str); + mutex_unlock(&sbi->vh_mutex); goto out_put_hidden_dir; + } + mutex_unlock(&sbi->vh_mutex); hfsplus_mark_inode_dirty(sbi->hidden_dir, HFSPLUS_I_CAT_DIRTY); } @@ -562,6 +596,8 @@ out_put_root: sb->s_root = NULL; out_put_alloc_file: iput(sbi->alloc_file); +out_close_attr_tree: + hfs_btree_close(sbi->attr_tree); out_close_cat_tree: hfs_btree_close(sbi->cat_tree); out_close_ext_tree: @@ -635,9 +671,20 @@ static int __init init_hfsplus_fs(void) hfsplus_init_once); if (!hfsplus_inode_cachep) return -ENOMEM; + err = hfsplus_create_attr_tree_cache(); + if (err) + goto destroy_inode_cache; err = register_filesystem(&hfsplus_fs_type); if (err) - kmem_cache_destroy(hfsplus_inode_cachep); + goto destroy_attr_tree_cache; + return 0; + +destroy_attr_tree_cache: + hfsplus_destroy_attr_tree_cache(); + +destroy_inode_cache: + kmem_cache_destroy(hfsplus_inode_cachep); + return err; } @@ -650,6 +697,7 @@ static void __exit exit_hfsplus_fs(void) * destroy cache. */ rcu_barrier(); + hfsplus_destroy_attr_tree_cache(); kmem_cache_destroy(hfsplus_inode_cachep); } diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c index a32998f29f0..2c2e47dcfdd 100644 --- a/fs/hfsplus/unicode.c +++ b/fs/hfsplus/unicode.c @@ -295,7 +295,8 @@ static inline u16 *decompose_unichar(wchar_t uc, int *size) return hfsplus_decompose_table + (off / 4); } -int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, +int hfsplus_asc2uni(struct super_block *sb, + struct hfsplus_unistr *ustr, int max_unistr_len, const char *astr, int len) { int size, dsize, decompose; @@ -303,7 +304,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, wchar_t c; decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); - while (outlen < HFSPLUS_MAX_STRLEN && len > 0) { + while (outlen < max_unistr_len && len > 0) { size = asc2unichar(sb, astr, len, &c); if (decompose) @@ -311,7 +312,7 @@ int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, else dstr = NULL; if (dstr) { - if (outlen + dsize > HFSPLUS_MAX_STRLEN) + if (outlen + dsize > max_unistr_len) break; do { ustr->unicode[outlen++] = cpu_to_be16(*dstr++); diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c new file mode 100644 index 00000000000..e8a4b0815c6 --- /dev/null +++ b/fs/hfsplus/xattr.c @@ -0,0 +1,709 @@ +/* + * linux/fs/hfsplus/xattr.c + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Logic of processing extended attributes + */ + +#include "hfsplus_fs.h" +#include "xattr.h" + +const struct xattr_handler *hfsplus_xattr_handlers[] = { + &hfsplus_xattr_osx_handler, + &hfsplus_xattr_user_handler, + &hfsplus_xattr_trusted_handler, + &hfsplus_xattr_security_handler, + NULL +}; + +static int strcmp_xattr_finder_info(const char *name) +{ + if (name) { + return strncmp(name, HFSPLUS_XATTR_FINDER_INFO_NAME, + sizeof(HFSPLUS_XATTR_FINDER_INFO_NAME)); + } + return -1; +} + +static int strcmp_xattr_acl(const char *name) +{ + if (name) { + return strncmp(name, HFSPLUS_XATTR_ACL_NAME, + sizeof(HFSPLUS_XATTR_ACL_NAME)); + } + return -1; +} + +static inline int is_known_namespace(const char *name) +{ + if (strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) && + strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && + strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && + strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) + return false; + + return true; +} + +static int can_set_xattr(struct inode *inode, const char *name, + const void *value, size_t value_len) +{ + if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) + return -EOPNOTSUPP; /* TODO: implement ACL support */ + + if (!strncmp(name, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN)) { + /* + * This makes sure that we aren't trying to set an + * attribute in a different namespace by prefixing it + * with "osx." + */ + if (is_known_namespace(name + XATTR_MAC_OSX_PREFIX_LEN)) + return -EOPNOTSUPP; + + return 0; + } + + /* + * Don't allow setting an attribute in an unknown namespace. + */ + if (strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) && + strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && + strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) + return -EOPNOTSUPP; + + return 0; +} + +int __hfsplus_setxattr(struct inode *inode, const char *name, + const void *value, size_t size, int flags) +{ + int err = 0; + struct hfs_find_data cat_fd; + hfsplus_cat_entry entry; + u16 cat_entry_flags, cat_entry_type; + u16 folder_finderinfo_len = sizeof(struct DInfo) + + sizeof(struct DXInfo); + u16 file_finderinfo_len = sizeof(struct FInfo) + + sizeof(struct FXInfo); + + if ((!S_ISREG(inode->i_mode) && + !S_ISDIR(inode->i_mode)) || + HFSPLUS_IS_RSRC(inode)) + return -EOPNOTSUPP; + + err = can_set_xattr(inode, name, value, size); + if (err) + return err; + + if (strncmp(name, XATTR_MAC_OSX_PREFIX, + XATTR_MAC_OSX_PREFIX_LEN) == 0) + name += XATTR_MAC_OSX_PREFIX_LEN; + + if (value == NULL) { + value = ""; + size = 0; + } + + err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd); + if (err) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + return err; + } + + err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd); + if (err) { + printk(KERN_ERR "hfs: catalog searching failed\n"); + goto end_setxattr; + } + + if (!strcmp_xattr_finder_info(name)) { + if (flags & XATTR_CREATE) { + printk(KERN_ERR "hfs: xattr exists yet\n"); + err = -EOPNOTSUPP; + goto end_setxattr; + } + hfs_bnode_read(cat_fd.bnode, &entry, cat_fd.entryoffset, + sizeof(hfsplus_cat_entry)); + if (be16_to_cpu(entry.type) == HFSPLUS_FOLDER) { + if (size == folder_finderinfo_len) { + memcpy(&entry.folder.user_info, value, + folder_finderinfo_len); + hfs_bnode_write(cat_fd.bnode, &entry, + cat_fd.entryoffset, + sizeof(struct hfsplus_cat_folder)); + hfsplus_mark_inode_dirty(inode, + HFSPLUS_I_CAT_DIRTY); + } else { + err = -ERANGE; + goto end_setxattr; + } + } else if (be16_to_cpu(entry.type) == HFSPLUS_FILE) { + if (size == file_finderinfo_len) { + memcpy(&entry.file.user_info, value, + file_finderinfo_len); + hfs_bnode_write(cat_fd.bnode, &entry, + cat_fd.entryoffset, + sizeof(struct hfsplus_cat_file)); + hfsplus_mark_inode_dirty(inode, + HFSPLUS_I_CAT_DIRTY); + } else { + err = -ERANGE; + goto end_setxattr; + } + } else { + err = -EOPNOTSUPP; + goto end_setxattr; + } + goto end_setxattr; + } + + if (!HFSPLUS_SB(inode->i_sb)->attr_tree) { + err = -EOPNOTSUPP; + goto end_setxattr; + } + + if (hfsplus_attr_exists(inode, name)) { + if (flags & XATTR_CREATE) { + printk(KERN_ERR "hfs: xattr exists yet\n"); + err = -EOPNOTSUPP; + goto end_setxattr; + } + err = hfsplus_delete_attr(inode, name); + if (err) + goto end_setxattr; + err = hfsplus_create_attr(inode, name, value, size); + if (err) + goto end_setxattr; + } else { + if (flags & XATTR_REPLACE) { + printk(KERN_ERR "hfs: cannot replace xattr\n"); + err = -EOPNOTSUPP; + goto end_setxattr; + } + err = hfsplus_create_attr(inode, name, value, size); + if (err) + goto end_setxattr; + } + + cat_entry_type = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset); + if (cat_entry_type == HFSPLUS_FOLDER) { + cat_entry_flags = hfs_bnode_read_u16(cat_fd.bnode, + cat_fd.entryoffset + + offsetof(struct hfsplus_cat_folder, flags)); + cat_entry_flags |= HFSPLUS_XATTR_EXISTS; + if (!strcmp_xattr_acl(name)) + cat_entry_flags |= HFSPLUS_ACL_EXISTS; + hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_folder, flags), + cat_entry_flags); + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY); + } else if (cat_entry_type == HFSPLUS_FILE) { + cat_entry_flags = hfs_bnode_read_u16(cat_fd.bnode, + cat_fd.entryoffset + + offsetof(struct hfsplus_cat_file, flags)); + cat_entry_flags |= HFSPLUS_XATTR_EXISTS; + if (!strcmp_xattr_acl(name)) + cat_entry_flags |= HFSPLUS_ACL_EXISTS; + hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_file, flags), + cat_entry_flags); + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY); + } else { + printk(KERN_ERR "hfs: invalid catalog entry type\n"); + err = -EIO; + goto end_setxattr; + } + +end_setxattr: + hfs_find_exit(&cat_fd); + return err; +} + +static inline int is_osx_xattr(const char *xattr_name) +{ + return !is_known_namespace(xattr_name); +} + +static int name_len(const char *xattr_name, int xattr_name_len) +{ + int len = xattr_name_len + 1; + + if (is_osx_xattr(xattr_name)) + len += XATTR_MAC_OSX_PREFIX_LEN; + + return len; +} + +static int copy_name(char *buffer, const char *xattr_name, int name_len) +{ + int len = name_len; + int offset = 0; + + if (is_osx_xattr(xattr_name)) { + strncpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN); + offset += XATTR_MAC_OSX_PREFIX_LEN; + len += XATTR_MAC_OSX_PREFIX_LEN; + } + + strncpy(buffer + offset, xattr_name, name_len); + memset(buffer + offset + name_len, 0, 1); + len += 1; + + return len; +} + +static ssize_t hfsplus_getxattr_finder_info(struct dentry *dentry, + void *value, size_t size) +{ + ssize_t res = 0; + struct inode *inode = dentry->d_inode; + struct hfs_find_data fd; + u16 entry_type; + u16 folder_rec_len = sizeof(struct DInfo) + sizeof(struct DXInfo); + u16 file_rec_len = sizeof(struct FInfo) + sizeof(struct FXInfo); + u16 record_len = max(folder_rec_len, file_rec_len); + u8 folder_finder_info[sizeof(struct DInfo) + sizeof(struct DXInfo)]; + u8 file_finder_info[sizeof(struct FInfo) + sizeof(struct FXInfo)]; + + if (size >= record_len) { + res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); + if (res) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + return res; + } + res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); + if (res) + goto end_getxattr_finder_info; + entry_type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset); + + if (entry_type == HFSPLUS_FOLDER) { + hfs_bnode_read(fd.bnode, folder_finder_info, + fd.entryoffset + + offsetof(struct hfsplus_cat_folder, user_info), + folder_rec_len); + memcpy(value, folder_finder_info, folder_rec_len); + res = folder_rec_len; + } else if (entry_type == HFSPLUS_FILE) { + hfs_bnode_read(fd.bnode, file_finder_info, + fd.entryoffset + + offsetof(struct hfsplus_cat_file, user_info), + file_rec_len); + memcpy(value, file_finder_info, file_rec_len); + res = file_rec_len; + } else { + res = -EOPNOTSUPP; + goto end_getxattr_finder_info; + } + } else + res = size ? -ERANGE : record_len; + +end_getxattr_finder_info: + if (size >= record_len) + hfs_find_exit(&fd); + return res; +} + +ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, + void *value, size_t size) +{ + struct inode *inode = dentry->d_inode; + struct hfs_find_data fd; + hfsplus_attr_entry *entry; + __be32 xattr_record_type; + u32 record_type; + u16 record_length = 0; + ssize_t res = 0; + + if ((!S_ISREG(inode->i_mode) && + !S_ISDIR(inode->i_mode)) || + HFSPLUS_IS_RSRC(inode)) + return -EOPNOTSUPP; + + if (strncmp(name, XATTR_MAC_OSX_PREFIX, + XATTR_MAC_OSX_PREFIX_LEN) == 0) { + /* skip "osx." prefix */ + name += XATTR_MAC_OSX_PREFIX_LEN; + /* + * Don't allow retrieving properly prefixed attributes + * by prepending them with "osx." + */ + if (is_known_namespace(name)) + return -EOPNOTSUPP; + } + + if (!strcmp_xattr_finder_info(name)) + return hfsplus_getxattr_finder_info(dentry, value, size); + + if (!HFSPLUS_SB(inode->i_sb)->attr_tree) + return -EOPNOTSUPP; + + entry = hfsplus_alloc_attr_entry(); + if (!entry) { + printk(KERN_ERR "hfs: can't allocate xattr entry\n"); + return -ENOMEM; + } + + res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->attr_tree, &fd); + if (res) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + goto failed_getxattr_init; + } + + res = hfsplus_find_attr(inode->i_sb, inode->i_ino, name, &fd); + if (res) { + if (res == -ENOENT) + res = -ENODATA; + else + printk(KERN_ERR "hfs: xattr searching failed\n"); + goto out; + } + + hfs_bnode_read(fd.bnode, &xattr_record_type, + fd.entryoffset, sizeof(xattr_record_type)); + record_type = be32_to_cpu(xattr_record_type); + if (record_type == HFSPLUS_ATTR_INLINE_DATA) { + record_length = hfs_bnode_read_u16(fd.bnode, + fd.entryoffset + + offsetof(struct hfsplus_attr_inline_data, + length)); + if (record_length > HFSPLUS_MAX_INLINE_DATA_SIZE) { + printk(KERN_ERR "hfs: invalid xattr record size\n"); + res = -EIO; + goto out; + } + } else if (record_type == HFSPLUS_ATTR_FORK_DATA || + record_type == HFSPLUS_ATTR_EXTENTS) { + printk(KERN_ERR "hfs: only inline data xattr are supported\n"); + res = -EOPNOTSUPP; + goto out; + } else { + printk(KERN_ERR "hfs: invalid xattr record\n"); + res = -EIO; + goto out; + } + + if (size) { + hfs_bnode_read(fd.bnode, entry, fd.entryoffset, + offsetof(struct hfsplus_attr_inline_data, + raw_bytes) + record_length); + } + + if (size >= record_length) { + memcpy(value, entry->inline_data.raw_bytes, record_length); + res = record_length; + } else + res = size ? -ERANGE : record_length; + +out: + hfs_find_exit(&fd); + +failed_getxattr_init: + hfsplus_destroy_attr_entry(entry); + return res; +} + +static inline int can_list(const char *xattr_name) +{ + if (!xattr_name) + return 0; + + return strncmp(xattr_name, XATTR_TRUSTED_PREFIX, + XATTR_TRUSTED_PREFIX_LEN) || + capable(CAP_SYS_ADMIN); +} + +static ssize_t hfsplus_listxattr_finder_info(struct dentry *dentry, + char *buffer, size_t size) +{ + ssize_t res = 0; + struct inode *inode = dentry->d_inode; + struct hfs_find_data fd; + u16 entry_type; + u8 folder_finder_info[sizeof(struct DInfo) + sizeof(struct DXInfo)]; + u8 file_finder_info[sizeof(struct FInfo) + sizeof(struct FXInfo)]; + unsigned long len, found_bit; + int xattr_name_len, symbols_count; + + res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd); + if (res) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + return res; + } + + res = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd); + if (res) + goto end_listxattr_finder_info; + + entry_type = hfs_bnode_read_u16(fd.bnode, fd.entryoffset); + if (entry_type == HFSPLUS_FOLDER) { + len = sizeof(struct DInfo) + sizeof(struct DXInfo); + hfs_bnode_read(fd.bnode, folder_finder_info, + fd.entryoffset + + offsetof(struct hfsplus_cat_folder, user_info), + len); + found_bit = find_first_bit((void *)folder_finder_info, len*8); + } else if (entry_type == HFSPLUS_FILE) { + len = sizeof(struct FInfo) + sizeof(struct FXInfo); + hfs_bnode_read(fd.bnode, file_finder_info, + fd.entryoffset + + offsetof(struct hfsplus_cat_file, user_info), + len); + found_bit = find_first_bit((void *)file_finder_info, len*8); + } else { + res = -EOPNOTSUPP; + goto end_listxattr_finder_info; + } + + if (found_bit >= (len*8)) + res = 0; + else { + symbols_count = sizeof(HFSPLUS_XATTR_FINDER_INFO_NAME) - 1; + xattr_name_len = + name_len(HFSPLUS_XATTR_FINDER_INFO_NAME, symbols_count); + if (!buffer || !size) { + if (can_list(HFSPLUS_XATTR_FINDER_INFO_NAME)) + res = xattr_name_len; + } else if (can_list(HFSPLUS_XATTR_FINDER_INFO_NAME)) { + if (size < xattr_name_len) + res = -ERANGE; + else { + res = copy_name(buffer, + HFSPLUS_XATTR_FINDER_INFO_NAME, + symbols_count); + } + } + } + +end_listxattr_finder_info: + hfs_find_exit(&fd); + + return res; +} + +ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) +{ + ssize_t err; + ssize_t res = 0; + struct inode *inode = dentry->d_inode; + struct hfs_find_data fd; + u16 key_len = 0; + struct hfsplus_attr_key attr_key; + char strbuf[HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; + int xattr_name_len; + + if ((!S_ISREG(inode->i_mode) && + !S_ISDIR(inode->i_mode)) || + HFSPLUS_IS_RSRC(inode)) + return -EOPNOTSUPP; + + res = hfsplus_listxattr_finder_info(dentry, buffer, size); + if (res < 0) + return res; + else if (!HFSPLUS_SB(inode->i_sb)->attr_tree) + return (res == 0) ? -EOPNOTSUPP : res; + + err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->attr_tree, &fd); + if (err) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + return err; + } + + err = hfsplus_find_attr(inode->i_sb, inode->i_ino, NULL, &fd); + if (err) { + if (err == -ENOENT) { + if (res == 0) + res = -ENODATA; + goto end_listxattr; + } else { + res = err; + goto end_listxattr; + } + } + + for (;;) { + key_len = hfs_bnode_read_u16(fd.bnode, fd.keyoffset); + if (key_len == 0 || key_len > fd.tree->max_key_len) { + printk(KERN_ERR "hfs: invalid xattr key length: %d\n", + key_len); + res = -EIO; + goto end_listxattr; + } + + hfs_bnode_read(fd.bnode, &attr_key, + fd.keyoffset, key_len + sizeof(key_len)); + + if (be32_to_cpu(attr_key.cnid) != inode->i_ino) + goto end_listxattr; + + xattr_name_len = HFSPLUS_ATTR_MAX_STRLEN; + if (hfsplus_uni2asc(inode->i_sb, + (const struct hfsplus_unistr *)&fd.key->attr.key_name, + strbuf, &xattr_name_len)) { + printk(KERN_ERR "hfs: unicode conversion failed\n"); + res = -EIO; + goto end_listxattr; + } + + if (!buffer || !size) { + if (can_list(strbuf)) + res += name_len(strbuf, xattr_name_len); + } else if (can_list(strbuf)) { + if (size < (res + name_len(strbuf, xattr_name_len))) { + res = -ERANGE; + goto end_listxattr; + } else + res += copy_name(buffer + res, + strbuf, xattr_name_len); + } + + if (hfs_brec_goto(&fd, 1)) + goto end_listxattr; + } + +end_listxattr: + hfs_find_exit(&fd); + return res; +} + +int hfsplus_removexattr(struct dentry *dentry, const char *name) +{ + int err = 0; + struct inode *inode = dentry->d_inode; + struct hfs_find_data cat_fd; + u16 flags; + u16 cat_entry_type; + int is_xattr_acl_deleted = 0; + int is_all_xattrs_deleted = 0; + + if ((!S_ISREG(inode->i_mode) && + !S_ISDIR(inode->i_mode)) || + HFSPLUS_IS_RSRC(inode)) + return -EOPNOTSUPP; + + if (!HFSPLUS_SB(inode->i_sb)->attr_tree) + return -EOPNOTSUPP; + + err = can_set_xattr(inode, name, NULL, 0); + if (err) + return err; + + if (strncmp(name, XATTR_MAC_OSX_PREFIX, + XATTR_MAC_OSX_PREFIX_LEN) == 0) + name += XATTR_MAC_OSX_PREFIX_LEN; + + if (!strcmp_xattr_finder_info(name)) + return -EOPNOTSUPP; + + err = hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &cat_fd); + if (err) { + printk(KERN_ERR "hfs: can't init xattr find struct\n"); + return err; + } + + err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &cat_fd); + if (err) { + printk(KERN_ERR "hfs: catalog searching failed\n"); + goto end_removexattr; + } + + err = hfsplus_delete_attr(inode, name); + if (err) + goto end_removexattr; + + is_xattr_acl_deleted = !strcmp_xattr_acl(name); + is_all_xattrs_deleted = !hfsplus_attr_exists(inode, NULL); + + if (!is_xattr_acl_deleted && !is_all_xattrs_deleted) + goto end_removexattr; + + cat_entry_type = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset); + + if (cat_entry_type == HFSPLUS_FOLDER) { + flags = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_folder, flags)); + if (is_xattr_acl_deleted) + flags &= ~HFSPLUS_ACL_EXISTS; + if (is_all_xattrs_deleted) + flags &= ~HFSPLUS_XATTR_EXISTS; + hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_folder, flags), + flags); + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY); + } else if (cat_entry_type == HFSPLUS_FILE) { + flags = hfs_bnode_read_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_file, flags)); + if (is_xattr_acl_deleted) + flags &= ~HFSPLUS_ACL_EXISTS; + if (is_all_xattrs_deleted) + flags &= ~HFSPLUS_XATTR_EXISTS; + hfs_bnode_write_u16(cat_fd.bnode, cat_fd.entryoffset + + offsetof(struct hfsplus_cat_file, flags), + flags); + hfsplus_mark_inode_dirty(inode, HFSPLUS_I_CAT_DIRTY); + } else { + printk(KERN_ERR "hfs: invalid catalog entry type\n"); + err = -EIO; + goto end_removexattr; + } + +end_removexattr: + hfs_find_exit(&cat_fd); + return err; +} + +static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); + + return hfsplus_getxattr(dentry, xattr_name, buffer, size); +} + +static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name, + const void *buffer, size_t size, int flags, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); + + return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); +} + +static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list, + size_t list_size, const char *name, size_t name_len, int type) +{ + /* + * This method is not used. + * It is used hfsplus_listxattr() instead of generic_listxattr(). + */ + return -EOPNOTSUPP; +} + +const struct xattr_handler hfsplus_xattr_osx_handler = { + .prefix = XATTR_MAC_OSX_PREFIX, + .list = hfsplus_osx_listxattr, + .get = hfsplus_osx_getxattr, + .set = hfsplus_osx_setxattr, +}; diff --git a/fs/hfsplus/xattr.h b/fs/hfsplus/xattr.h new file mode 100644 index 00000000000..847b695b984 --- /dev/null +++ b/fs/hfsplus/xattr.h @@ -0,0 +1,60 @@ +/* + * linux/fs/hfsplus/xattr.h + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Logic of processing extended attributes + */ + +#ifndef _LINUX_HFSPLUS_XATTR_H +#define _LINUX_HFSPLUS_XATTR_H + +#include <linux/xattr.h> + +extern const struct xattr_handler hfsplus_xattr_osx_handler; +extern const struct xattr_handler hfsplus_xattr_user_handler; +extern const struct xattr_handler hfsplus_xattr_trusted_handler; +/*extern const struct xattr_handler hfsplus_xattr_acl_access_handler;*/ +/*extern const struct xattr_handler hfsplus_xattr_acl_default_handler;*/ +extern const struct xattr_handler hfsplus_xattr_security_handler; + +extern const struct xattr_handler *hfsplus_xattr_handlers[]; + +int __hfsplus_setxattr(struct inode *inode, const char *name, + const void *value, size_t size, int flags); + +static inline int hfsplus_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + return __hfsplus_setxattr(dentry->d_inode, name, value, size, flags); +} + +ssize_t hfsplus_getxattr(struct dentry *dentry, const char *name, + void *value, size_t size); + +ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size); + +int hfsplus_removexattr(struct dentry *dentry, const char *name); + +int hfsplus_init_security(struct inode *inode, struct inode *dir, + const struct qstr *qstr); + +static inline int hfsplus_init_acl(struct inode *inode, struct inode *dir) +{ + /*TODO: implement*/ + return 0; +} + +static inline int hfsplus_init_inode_security(struct inode *inode, + struct inode *dir, + const struct qstr *qstr) +{ + int err; + + err = hfsplus_init_acl(inode, dir); + if (!err) + err = hfsplus_init_security(inode, dir, qstr); + return err; +} + +#endif diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c new file mode 100644 index 00000000000..83b842f113c --- /dev/null +++ b/fs/hfsplus/xattr_security.c @@ -0,0 +1,104 @@ +/* + * linux/fs/hfsplus/xattr_trusted.c + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Handler for storing security labels as extended attributes. + */ + +#include <linux/security.h> +#include "hfsplus_fs.h" +#include "xattr.h" + +static int hfsplus_security_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_SECURITY_PREFIX); + strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); + + return hfsplus_getxattr(dentry, xattr_name, buffer, size); +} + +static int hfsplus_security_setxattr(struct dentry *dentry, const char *name, + const void *buffer, size_t size, int flags, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_SECURITY_PREFIX); + strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); + + return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); +} + +static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list, + size_t list_size, const char *name, size_t name_len, int type) +{ + /* + * This method is not used. + * It is used hfsplus_listxattr() instead of generic_listxattr(). + */ + return -EOPNOTSUPP; +} + +static int hfsplus_initxattrs(struct inode *inode, + const struct xattr *xattr_array, + void *fs_info) +{ + const struct xattr *xattr; + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t xattr_name_len; + int err = 0; + + for (xattr = xattr_array; xattr->name != NULL; xattr++) { + xattr_name_len = strlen(xattr->name); + + if (xattr_name_len == 0) + continue; + + if (xattr_name_len + XATTR_SECURITY_PREFIX_LEN > + HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_SECURITY_PREFIX); + strcpy(xattr_name + + XATTR_SECURITY_PREFIX_LEN, xattr->name); + memset(xattr_name + + XATTR_SECURITY_PREFIX_LEN + xattr_name_len, 0, 1); + + err = __hfsplus_setxattr(inode, xattr_name, + xattr->value, xattr->value_len, 0); + if (err) + break; + } + return err; +} + +int hfsplus_init_security(struct inode *inode, struct inode *dir, + const struct qstr *qstr) +{ + return security_inode_init_security(inode, dir, qstr, + &hfsplus_initxattrs, NULL); +} + +const struct xattr_handler hfsplus_xattr_security_handler = { + .prefix = XATTR_SECURITY_PREFIX, + .list = hfsplus_security_listxattr, + .get = hfsplus_security_getxattr, + .set = hfsplus_security_setxattr, +}; diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c new file mode 100644 index 00000000000..426cee27754 --- /dev/null +++ b/fs/hfsplus/xattr_trusted.c @@ -0,0 +1,63 @@ +/* + * linux/fs/hfsplus/xattr_trusted.c + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Handler for trusted extended attributes. + */ + +#include "hfsplus_fs.h" +#include "xattr.h" + +static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_TRUSTED_PREFIX); + strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); + + return hfsplus_getxattr(dentry, xattr_name, buffer, size); +} + +static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name, + const void *buffer, size_t size, int flags, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_TRUSTED_PREFIX); + strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); + + return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); +} + +static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list, + size_t list_size, const char *name, size_t name_len, int type) +{ + /* + * This method is not used. + * It is used hfsplus_listxattr() instead of generic_listxattr(). + */ + return -EOPNOTSUPP; +} + +const struct xattr_handler hfsplus_xattr_trusted_handler = { + .prefix = XATTR_TRUSTED_PREFIX, + .list = hfsplus_trusted_listxattr, + .get = hfsplus_trusted_getxattr, + .set = hfsplus_trusted_setxattr, +}; diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c new file mode 100644 index 00000000000..e34016561ae --- /dev/null +++ b/fs/hfsplus/xattr_user.c @@ -0,0 +1,63 @@ +/* + * linux/fs/hfsplus/xattr_user.c + * + * Vyacheslav Dubeyko <slava@dubeyko.com> + * + * Handler for user extended attributes. + */ + +#include "hfsplus_fs.h" +#include "xattr.h" + +static int hfsplus_user_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_USER_PREFIX); + strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); + + return hfsplus_getxattr(dentry, xattr_name, buffer, size); +} + +static int hfsplus_user_setxattr(struct dentry *dentry, const char *name, + const void *buffer, size_t size, int flags, int type) +{ + char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; + size_t len = strlen(name); + + if (!strcmp(name, "")) + return -EINVAL; + + if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) + return -EOPNOTSUPP; + + strcpy(xattr_name, XATTR_USER_PREFIX); + strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); + + return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); +} + +static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list, + size_t list_size, const char *name, size_t name_len, int type) +{ + /* + * This method is not used. + * It is used hfsplus_listxattr() instead of generic_listxattr(). + */ + return -EOPNOTSUPP; +} + +const struct xattr_handler hfsplus_xattr_user_handler = { + .prefix = XATTR_USER_PREFIX, + .list = hfsplus_user_listxattr, + .get = hfsplus_user_getxattr, + .set = hfsplus_user_setxattr, +}; diff --git a/fs/inode.c b/fs/inode.c index 67880e60439..f5f7c06c36f 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -798,11 +798,10 @@ static struct inode *find_inode(struct super_block *sb, int (*test)(struct inode *, void *), void *data) { - struct hlist_node *node; struct inode *inode = NULL; repeat: - hlist_for_each_entry(inode, node, head, i_hash) { + hlist_for_each_entry(inode, head, i_hash) { spin_lock(&inode->i_lock); if (inode->i_sb != sb) { spin_unlock(&inode->i_lock); @@ -830,11 +829,10 @@ repeat: static struct inode *find_inode_fast(struct super_block *sb, struct hlist_head *head, unsigned long ino) { - struct hlist_node *node; struct inode *inode = NULL; repeat: - hlist_for_each_entry(inode, node, head, i_hash) { + hlist_for_each_entry(inode, head, i_hash) { spin_lock(&inode->i_lock); if (inode->i_ino != ino) { spin_unlock(&inode->i_lock); @@ -1132,11 +1130,10 @@ EXPORT_SYMBOL(iget_locked); static int test_inode_iunique(struct super_block *sb, unsigned long ino) { struct hlist_head *b = inode_hashtable + hash(sb, ino); - struct hlist_node *node; struct inode *inode; spin_lock(&inode_hash_lock); - hlist_for_each_entry(inode, node, b, i_hash) { + hlist_for_each_entry(inode, b, i_hash) { if (inode->i_ino == ino && inode->i_sb == sb) { spin_unlock(&inode_hash_lock); return 0; @@ -1291,10 +1288,9 @@ int insert_inode_locked(struct inode *inode) struct hlist_head *head = inode_hashtable + hash(sb, ino); while (1) { - struct hlist_node *node; struct inode *old = NULL; spin_lock(&inode_hash_lock); - hlist_for_each_entry(old, node, head, i_hash) { + hlist_for_each_entry(old, head, i_hash) { if (old->i_ino != ino) continue; if (old->i_sb != sb) @@ -1306,7 +1302,7 @@ int insert_inode_locked(struct inode *inode) } break; } - if (likely(!node)) { + if (likely(!old)) { spin_lock(&inode->i_lock); inode->i_state |= I_NEW; hlist_add_head(&inode->i_hash, head); @@ -1334,11 +1330,10 @@ int insert_inode_locked4(struct inode *inode, unsigned long hashval, struct hlist_head *head = inode_hashtable + hash(sb, hashval); while (1) { - struct hlist_node *node; struct inode *old = NULL; spin_lock(&inode_hash_lock); - hlist_for_each_entry(old, node, head, i_hash) { + hlist_for_each_entry(old, head, i_hash) { if (old->i_sb != sb) continue; if (!test(old, data)) @@ -1350,7 +1345,7 @@ int insert_inode_locked4(struct inode *inode, unsigned long hashval, } break; } - if (likely(!node)) { + if (likely(!old)) { spin_lock(&inode->i_lock); inode->i_state |= I_NEW; hlist_add_head(&inode->i_hash, head); diff --git a/fs/lockd/host.c b/fs/lockd/host.c index 0e17090c310..abdd75d44dd 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -32,15 +32,15 @@ static struct hlist_head nlm_server_hosts[NLM_HOST_NRHASH]; static struct hlist_head nlm_client_hosts[NLM_HOST_NRHASH]; -#define for_each_host(host, pos, chain, table) \ +#define for_each_host(host, chain, table) \ for ((chain) = (table); \ (chain) < (table) + NLM_HOST_NRHASH; ++(chain)) \ - hlist_for_each_entry((host), (pos), (chain), h_hash) + hlist_for_each_entry((host), (chain), h_hash) -#define for_each_host_safe(host, pos, next, chain, table) \ +#define for_each_host_safe(host, next, chain, table) \ for ((chain) = (table); \ (chain) < (table) + NLM_HOST_NRHASH; ++(chain)) \ - hlist_for_each_entry_safe((host), (pos), (next), \ + hlist_for_each_entry_safe((host), (next), \ (chain), h_hash) static unsigned long nrhosts; @@ -225,7 +225,6 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, .net = net, }; struct hlist_head *chain; - struct hlist_node *pos; struct nlm_host *host; struct nsm_handle *nsm = NULL; struct lockd_net *ln = net_generic(net, lockd_net_id); @@ -237,7 +236,7 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, mutex_lock(&nlm_host_mutex); chain = &nlm_client_hosts[nlm_hash_address(sap)]; - hlist_for_each_entry(host, pos, chain, h_hash) { + hlist_for_each_entry(host, chain, h_hash) { if (host->net != net) continue; if (!rpc_cmp_addr(nlm_addr(host), sap)) @@ -322,7 +321,6 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, const size_t hostname_len) { struct hlist_head *chain; - struct hlist_node *pos; struct nlm_host *host = NULL; struct nsm_handle *nsm = NULL; struct sockaddr *src_sap = svc_daddr(rqstp); @@ -350,7 +348,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, nlm_gc_hosts(net); chain = &nlm_server_hosts[nlm_hash_address(ni.sap)]; - hlist_for_each_entry(host, pos, chain, h_hash) { + hlist_for_each_entry(host, chain, h_hash) { if (host->net != net) continue; if (!rpc_cmp_addr(nlm_addr(host), ni.sap)) @@ -515,10 +513,9 @@ static struct nlm_host *next_host_state(struct hlist_head *cache, { struct nlm_host *host; struct hlist_head *chain; - struct hlist_node *pos; mutex_lock(&nlm_host_mutex); - for_each_host(host, pos, chain, cache) { + for_each_host(host, chain, cache) { if (host->h_nsmhandle == nsm && host->h_nsmstate != info->state) { host->h_nsmstate = info->state; @@ -570,7 +567,6 @@ void nlm_host_rebooted(const struct nlm_reboot *info) static void nlm_complain_hosts(struct net *net) { struct hlist_head *chain; - struct hlist_node *pos; struct nlm_host *host; if (net) { @@ -587,7 +583,7 @@ static void nlm_complain_hosts(struct net *net) dprintk("lockd: %lu hosts left:\n", nrhosts); } - for_each_host(host, pos, chain, nlm_server_hosts) { + for_each_host(host, chain, nlm_server_hosts) { if (net && host->net != net) continue; dprintk(" %s (cnt %d use %d exp %ld net %p)\n", @@ -600,14 +596,13 @@ void nlm_shutdown_hosts_net(struct net *net) { struct hlist_head *chain; - struct hlist_node *pos; struct nlm_host *host; mutex_lock(&nlm_host_mutex); /* First, make all hosts eligible for gc */ dprintk("lockd: nuking all hosts in net %p...\n", net); - for_each_host(host, pos, chain, nlm_server_hosts) { + for_each_host(host, chain, nlm_server_hosts) { if (net && host->net != net) continue; host->h_expires = jiffies - 1; @@ -644,11 +639,11 @@ static void nlm_gc_hosts(struct net *net) { struct hlist_head *chain; - struct hlist_node *pos, *next; + struct hlist_node *next; struct nlm_host *host; dprintk("lockd: host garbage collection for net %p\n", net); - for_each_host(host, pos, chain, nlm_server_hosts) { + for_each_host(host, chain, nlm_server_hosts) { if (net && host->net != net) continue; host->h_inuse = 0; @@ -657,7 +652,7 @@ nlm_gc_hosts(struct net *net) /* Mark all hosts that hold locks, blocks or shares */ nlmsvc_mark_resources(net); - for_each_host_safe(host, pos, next, chain, nlm_server_hosts) { + for_each_host_safe(host, next, chain, nlm_server_hosts) { if (net && host->net != net) continue; if (atomic_read(&host->h_count) || host->h_inuse diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c index b3a24b07d98..d17bb62b06d 100644 --- a/fs/lockd/svcsubs.c +++ b/fs/lockd/svcsubs.c @@ -84,7 +84,6 @@ __be32 nlm_lookup_file(struct svc_rqst *rqstp, struct nlm_file **result, struct nfs_fh *f) { - struct hlist_node *pos; struct nlm_file *file; unsigned int hash; __be32 nfserr; @@ -96,7 +95,7 @@ nlm_lookup_file(struct svc_rqst *rqstp, struct nlm_file **result, /* Lock file table */ mutex_lock(&nlm_file_mutex); - hlist_for_each_entry(file, pos, &nlm_files[hash], f_list) + hlist_for_each_entry(file, &nlm_files[hash], f_list) if (!nfs_compare_fh(&file->f_handle, f)) goto found; @@ -248,13 +247,13 @@ static int nlm_traverse_files(void *data, nlm_host_match_fn_t match, int (*is_failover_file)(void *data, struct nlm_file *file)) { - struct hlist_node *pos, *next; + struct hlist_node *next; struct nlm_file *file; int i, ret = 0; mutex_lock(&nlm_file_mutex); for (i = 0; i < FILE_NRHASH; i++) { - hlist_for_each_entry_safe(file, pos, next, &nlm_files[i], f_list) { + hlist_for_each_entry_safe(file, next, &nlm_files[i], f_list) { if (is_failover_file && !is_failover_file(data, file)) continue; file->f_count++; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 9f3c66438d0..84d8eae203a 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -197,7 +197,6 @@ error_0: EXPORT_SYMBOL_GPL(nfs_alloc_client); #if IS_ENABLED(CONFIG_NFS_V4) -/* idr_remove_all is not needed as all id's are removed by nfs_put_client */ void nfs_cleanup_cb_ident_idr(struct net *net) { struct nfs_net *nn = net_generic(net, nfs_net_id); diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 2e9779b58b7..47d10087239 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -29,15 +29,14 @@ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) if (clp->rpc_ops->version != 4 || minorversion != 0) return ret; -retry: - if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) - return -ENOMEM; + idr_preload(GFP_KERNEL); spin_lock(&nn->nfs_client_lock); - ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident); + ret = idr_alloc(&nn->cb_ident_idr, clp, 0, 0, GFP_NOWAIT); + if (ret >= 0) + clp->cl_cb_ident = ret; spin_unlock(&nn->nfs_client_lock); - if (ret == -EAGAIN) - goto retry; - return ret; + idr_preload_end(); + return ret < 0 ? ret : 0; } #ifdef CONFIG_NFS_V4_1 diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index d35b62e83ea..6da209bd940 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -77,9 +77,8 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, long hash) { struct nfs4_deviceid_node *d; - struct hlist_node *n; - hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[hash], node) + hlist_for_each_entry_rcu(d, &nfs4_deviceid_cache[hash], node) if (d->ld == ld && d->nfs_client == clp && !memcmp(&d->deviceid, id, sizeof(*id))) { if (atomic_read(&d->ref)) @@ -248,12 +247,11 @@ static void _deviceid_purge_client(const struct nfs_client *clp, long hash) { struct nfs4_deviceid_node *d; - struct hlist_node *n; HLIST_HEAD(tmp); spin_lock(&nfs4_deviceid_lock); rcu_read_lock(); - hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[hash], node) + hlist_for_each_entry_rcu(d, &nfs4_deviceid_cache[hash], node) if (d->nfs_client == clp && atomic_read(&d->ref)) { hlist_del_init_rcu(&d->node); hlist_add_head(&d->tmpnode, &tmp); @@ -291,12 +289,11 @@ void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp) { struct nfs4_deviceid_node *d; - struct hlist_node *n; int i; rcu_read_lock(); for (i = 0; i < NFS4_DEVICE_ID_HASH_SIZE; i ++){ - hlist_for_each_entry_rcu(d, n, &nfs4_deviceid_cache[i], node) + hlist_for_each_entry_rcu(d, &nfs4_deviceid_cache[i], node) if (d->nfs_client == clp) set_bit(NFS_DEVICEID_INVALID, &d->flags); } diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 2cbac34a55d..da3dbd0f897 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -120,7 +120,6 @@ hash_refile(struct svc_cacherep *rp) int nfsd_cache_lookup(struct svc_rqst *rqstp) { - struct hlist_node *hn; struct hlist_head *rh; struct svc_cacherep *rp; __be32 xid = rqstp->rq_xid; @@ -141,7 +140,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) rtn = RC_DOIT; rh = &cache_hash[request_hash(xid)]; - hlist_for_each_entry(rp, hn, rh, c_hash) { + hlist_for_each_entry(rp, rh, c_hash) { if (rp->c_state != RC_UNUSED && xid == rp->c_xid && proc == rp->c_proc && proto == rp->c_prot && vers == rp->c_vers && diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index 6baadb5a843..4bb21d67d9b 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -52,7 +52,6 @@ void __fsnotify_vfsmount_delete(struct vfsmount *mnt) void __fsnotify_update_child_dentry_flags(struct inode *inode) { struct dentry *alias; - struct hlist_node *p; int watched; if (!S_ISDIR(inode->i_mode)) @@ -64,7 +63,7 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode) spin_lock(&inode->i_lock); /* run all of the dentries associated with this inode. Since this is a * directory, there damn well better only be one item on this list */ - hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(alias, &inode->i_dentry, d_alias) { struct dentry *child; /* run all of the children of the original inode and fix their diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c index f31e90fc050..74825be65b7 100644 --- a/fs/notify/inode_mark.c +++ b/fs/notify/inode_mark.c @@ -36,12 +36,11 @@ static void fsnotify_recalc_inode_mask_locked(struct inode *inode) { struct fsnotify_mark *mark; - struct hlist_node *pos; __u32 new_mask = 0; assert_spin_locked(&inode->i_lock); - hlist_for_each_entry(mark, pos, &inode->i_fsnotify_marks, i.i_list) + hlist_for_each_entry(mark, &inode->i_fsnotify_marks, i.i_list) new_mask |= mark->mask; inode->i_fsnotify_mask = new_mask; } @@ -87,11 +86,11 @@ void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark) void fsnotify_clear_marks_by_inode(struct inode *inode) { struct fsnotify_mark *mark, *lmark; - struct hlist_node *pos, *n; + struct hlist_node *n; LIST_HEAD(free_list); spin_lock(&inode->i_lock); - hlist_for_each_entry_safe(mark, pos, n, &inode->i_fsnotify_marks, i.i_list) { + hlist_for_each_entry_safe(mark, n, &inode->i_fsnotify_marks, i.i_list) { list_add(&mark->i.free_i_list, &free_list); hlist_del_init_rcu(&mark->i.i_list); fsnotify_get_mark(mark); @@ -129,11 +128,10 @@ static struct fsnotify_mark *fsnotify_find_inode_mark_locked( struct inode *inode) { struct fsnotify_mark *mark; - struct hlist_node *pos; assert_spin_locked(&inode->i_lock); - hlist_for_each_entry(mark, pos, &inode->i_fsnotify_marks, i.i_list) { + hlist_for_each_entry(mark, &inode->i_fsnotify_marks, i.i_list) { if (mark->group == group) { fsnotify_get_mark(mark); return mark; @@ -194,8 +192,7 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, struct inode *inode, int allow_dups) { - struct fsnotify_mark *lmark; - struct hlist_node *node, *last = NULL; + struct fsnotify_mark *lmark, *last = NULL; int ret = 0; mark->flags |= FSNOTIFY_MARK_FLAG_INODE; @@ -214,8 +211,8 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark, } /* should mark be in the middle of the current list? */ - hlist_for_each_entry(lmark, node, &inode->i_fsnotify_marks, i.i_list) { - last = node; + hlist_for_each_entry(lmark, &inode->i_fsnotify_marks, i.i_list) { + last = lmark; if ((lmark->group == group) && !allow_dups) { ret = -EEXIST; @@ -235,7 +232,7 @@ int fsnotify_add_inode_mark(struct fsnotify_mark *mark, BUG_ON(last == NULL); /* mark should be the last entry. last is the current last entry */ - hlist_add_after_rcu(last, &mark->i.i_list); + hlist_add_after_rcu(&last->i.i_list, &mark->i.i_list); out: fsnotify_recalc_inode_mask_locked(inode); spin_unlock(&inode->i_lock); diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c index 871569c7d60..4216308b81b 100644 --- a/fs/notify/inotify/inotify_fsnotify.c +++ b/fs/notify/inotify/inotify_fsnotify.c @@ -197,7 +197,6 @@ static void inotify_free_group_priv(struct fsnotify_group *group) { /* ideally the idr is empty and we won't hit the BUG in the callback */ idr_for_each(&group->inotify_data.idr, idr_callback, group); - idr_remove_all(&group->inotify_data.idr); idr_destroy(&group->inotify_data.idr); atomic_dec(&group->inotify_data.user->inotify_devs); free_uid(group->inotify_data.user); diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 07f7a92fe88..e0f7c1241a6 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -364,22 +364,20 @@ static int inotify_add_to_idr(struct idr *idr, spinlock_t *idr_lock, { int ret; - do { - if (unlikely(!idr_pre_get(idr, GFP_KERNEL))) - return -ENOMEM; + idr_preload(GFP_KERNEL); + spin_lock(idr_lock); - spin_lock(idr_lock); - ret = idr_get_new_above(idr, i_mark, *last_wd + 1, - &i_mark->wd); + ret = idr_alloc(idr, i_mark, *last_wd + 1, 0, GFP_NOWAIT); + if (ret >= 0) { /* we added the mark to the idr, take a reference */ - if (!ret) { - *last_wd = i_mark->wd; - fsnotify_get_mark(&i_mark->fsn_mark); - } - spin_unlock(idr_lock); - } while (ret == -EAGAIN); + i_mark->wd = ret; + *last_wd = i_mark->wd; + fsnotify_get_mark(&i_mark->fsn_mark); + } - return ret; + spin_unlock(idr_lock); + idr_preload_end(); + return ret < 0 ? ret : 0; } static struct inotify_inode_mark *inotify_idr_find_locked(struct fsnotify_group *group, diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c index 4df58b8ea64..68ca5a8704b 100644 --- a/fs/notify/vfsmount_mark.c +++ b/fs/notify/vfsmount_mark.c @@ -33,12 +33,12 @@ void fsnotify_clear_marks_by_mount(struct vfsmount *mnt) { struct fsnotify_mark *mark, *lmark; - struct hlist_node *pos, *n; + struct hlist_node *n; struct mount *m = real_mount(mnt); LIST_HEAD(free_list); spin_lock(&mnt->mnt_root->d_lock); - hlist_for_each_entry_safe(mark, pos, n, &m->mnt_fsnotify_marks, m.m_list) { + hlist_for_each_entry_safe(mark, n, &m->mnt_fsnotify_marks, m.m_list) { list_add(&mark->m.free_m_list, &free_list); hlist_del_init_rcu(&mark->m.m_list); fsnotify_get_mark(mark); @@ -71,12 +71,11 @@ static void fsnotify_recalc_vfsmount_mask_locked(struct vfsmount *mnt) { struct mount *m = real_mount(mnt); struct fsnotify_mark *mark; - struct hlist_node *pos; __u32 new_mask = 0; assert_spin_locked(&mnt->mnt_root->d_lock); - hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list) + hlist_for_each_entry(mark, &m->mnt_fsnotify_marks, m.m_list) new_mask |= mark->mask; m->mnt_fsnotify_mask = new_mask; } @@ -114,11 +113,10 @@ static struct fsnotify_mark *fsnotify_find_vfsmount_mark_locked(struct fsnotify_ { struct mount *m = real_mount(mnt); struct fsnotify_mark *mark; - struct hlist_node *pos; assert_spin_locked(&mnt->mnt_root->d_lock); - hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list) { + hlist_for_each_entry(mark, &m->mnt_fsnotify_marks, m.m_list) { if (mark->group == group) { fsnotify_get_mark(mark); return mark; @@ -153,8 +151,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, int allow_dups) { struct mount *m = real_mount(mnt); - struct fsnotify_mark *lmark; - struct hlist_node *node, *last = NULL; + struct fsnotify_mark *lmark, *last = NULL; int ret = 0; mark->flags |= FSNOTIFY_MARK_FLAG_VFSMOUNT; @@ -173,8 +170,8 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, } /* should mark be in the middle of the current list? */ - hlist_for_each_entry(lmark, node, &m->mnt_fsnotify_marks, m.m_list) { - last = node; + hlist_for_each_entry(lmark, &m->mnt_fsnotify_marks, m.m_list) { + last = lmark; if ((lmark->group == group) && !allow_dups) { ret = -EEXIST; @@ -194,7 +191,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark, BUG_ON(last == NULL); /* mark should be the last entry. last is the current last entry */ - hlist_add_after_rcu(last, &mark->m.m_list); + hlist_add_after_rcu(&last->m.m_list, &mark->m.m_list); out: fsnotify_recalc_vfsmount_mask_locked(mnt); spin_unlock(&mnt->mnt_root->d_lock); diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 0d2bf566e39..aa88bd8bced 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -304,28 +304,22 @@ static u8 o2net_num_from_nn(struct o2net_node *nn) static int o2net_prep_nsw(struct o2net_node *nn, struct o2net_status_wait *nsw) { - int ret = 0; - - do { - if (!idr_pre_get(&nn->nn_status_idr, GFP_ATOMIC)) { - ret = -EAGAIN; - break; - } - spin_lock(&nn->nn_lock); - ret = idr_get_new(&nn->nn_status_idr, nsw, &nsw->ns_id); - if (ret == 0) - list_add_tail(&nsw->ns_node_item, - &nn->nn_status_list); - spin_unlock(&nn->nn_lock); - } while (ret == -EAGAIN); + int ret; - if (ret == 0) { - init_waitqueue_head(&nsw->ns_wq); - nsw->ns_sys_status = O2NET_ERR_NONE; - nsw->ns_status = 0; + spin_lock(&nn->nn_lock); + ret = idr_alloc(&nn->nn_status_idr, nsw, 0, 0, GFP_ATOMIC); + if (ret >= 0) { + nsw->ns_id = ret; + list_add_tail(&nsw->ns_node_item, &nn->nn_status_list); } + spin_unlock(&nn->nn_lock); + if (ret < 0) + return ret; - return ret; + init_waitqueue_head(&nsw->ns_wq); + nsw->ns_sys_status = O2NET_ERR_NONE; + nsw->ns_status = 0; + return 0; } static void o2net_complete_nsw_locked(struct o2net_node *nn, diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c index 8db4b58b2e4..ef999729e27 100644 --- a/fs/ocfs2/dcache.c +++ b/fs/ocfs2/dcache.c @@ -169,11 +169,10 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno, int skip_unhashed) { - struct hlist_node *p; struct dentry *dentry; spin_lock(&inode->i_lock); - hlist_for_each_entry(dentry, p, &inode->i_dentry, d_alias) { + hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) { spin_lock(&dentry->d_lock); if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) { trace_ocfs2_find_local_alias(dentry->d_name.len, diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index 01ebfd0bdad..eeac97bb3bf 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2083,7 +2083,6 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm, u8 dead_node, u8 new_master) { int i; - struct hlist_node *hash_iter; struct hlist_head *bucket; struct dlm_lock_resource *res, *next; @@ -2114,7 +2113,7 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm, * if necessary */ for (i = 0; i < DLM_HASH_BUCKETS; i++) { bucket = dlm_lockres_hash(dlm, i); - hlist_for_each_entry(res, hash_iter, bucket, hash_node) { + hlist_for_each_entry(res, bucket, hash_node) { if (!(res->state & DLM_LOCK_RES_RECOVERING)) continue; @@ -2273,7 +2272,6 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm, static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node) { - struct hlist_node *iter; struct dlm_lock_resource *res; int i; struct hlist_head *bucket; @@ -2299,7 +2297,7 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node) */ for (i = 0; i < DLM_HASH_BUCKETS; i++) { bucket = dlm_lockres_hash(dlm, i); - hlist_for_each_entry(res, iter, bucket, hash_node) { + hlist_for_each_entry(res, bucket, hash_node) { /* always prune any $RECOVERY entries for dead nodes, * otherwise hangs can occur during later recovery */ if (dlm_is_recovery_lock(res->lockname.name, diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index f169da4624f..b7e74b580c0 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -642,7 +642,7 @@ ocfs2_block_group_alloc_discontig(handle_t *handle, * cluster groups will be staying in cache for the duration of * this operation. */ - ac->ac_allow_chain_relink = 0; + ac->ac_disable_chain_relink = 1; /* Claim the first region */ status = ocfs2_block_group_claim_bits(osb, handle, ac, min_bits, @@ -1823,7 +1823,7 @@ static int ocfs2_search_chain(struct ocfs2_alloc_context *ac, * Do this *after* figuring out how many bits we're taking out * of our target group. */ - if (ac->ac_allow_chain_relink && + if (!ac->ac_disable_chain_relink && (prev_group_bh) && (ocfs2_block_group_reasonably_empty(bg, res->sr_bits))) { status = ocfs2_relink_block_group(handle, alloc_inode, @@ -1928,7 +1928,6 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, victim = ocfs2_find_victim_chain(cl); ac->ac_chain = victim; - ac->ac_allow_chain_relink = 1; status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, res, &bits_left); @@ -1947,7 +1946,7 @@ static int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, * searching each chain in order. Don't allow chain relinking * because we only calculate enough journal credits for one * relink per alloc. */ - ac->ac_allow_chain_relink = 0; + ac->ac_disable_chain_relink = 1; for (i = 0; i < le16_to_cpu(cl->cl_next_free_rec); i ++) { if (i == victim) continue; diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h index b8afabfeede..a36d0aa5091 100644 --- a/fs/ocfs2/suballoc.h +++ b/fs/ocfs2/suballoc.h @@ -49,7 +49,7 @@ struct ocfs2_alloc_context { /* these are used by the chain search */ u16 ac_chain; - int ac_allow_chain_relink; + int ac_disable_chain_relink; group_search_t *ac_group_search; u64 ac_last_group; diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 0ba9ea1e796..2e3ea308c14 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -7189,7 +7189,7 @@ int ocfs2_init_security_and_acl(struct inode *dir, struct buffer_head *dir_bh = NULL; ret = ocfs2_init_security_get(inode, dir, qstr, NULL); - if (!ret) { + if (ret) { mlog_errno(ret); goto leave; } diff --git a/fs/proc/base.c b/fs/proc/base.c index f3b133d7991..69078c7cef1 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -73,6 +73,7 @@ #include <linux/security.h> #include <linux/ptrace.h> #include <linux/tracehook.h> +#include <linux/printk.h> #include <linux/cgroup.h> #include <linux/cpuset.h> #include <linux/audit.h> @@ -952,7 +953,7 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf, * /proc/pid/oom_adj is provided for legacy purposes, ask users to use * /proc/pid/oom_score_adj instead. */ - printk_once(KERN_WARNING "%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n", + pr_warn_once("%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n", current->comm, task_pid_nr(current), task_pid_nr(task), task_pid_nr(task)); diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 2983dc52ca2..4b3b3ffb52f 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -15,6 +15,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/printk.h> #include <linux/mount.h> #include <linux/init.h> #include <linux/idr.h> @@ -132,11 +133,8 @@ __proc_file_read(struct file *file, char __user *buf, size_t nbytes, } if (start == NULL) { - if (n > PAGE_SIZE) { - printk(KERN_ERR - "proc_file_read: Apparent buffer overflow!\n"); + if (n > PAGE_SIZE) /* Apparent buffer overflow */ n = PAGE_SIZE; - } n -= *ppos; if (n <= 0) break; @@ -144,26 +142,19 @@ __proc_file_read(struct file *file, char __user *buf, size_t nbytes, n = count; start = page + *ppos; } else if (start < page) { - if (n > PAGE_SIZE) { - printk(KERN_ERR - "proc_file_read: Apparent buffer overflow!\n"); + if (n > PAGE_SIZE) /* Apparent buffer overflow */ n = PAGE_SIZE; - } if (n > count) { /* * Don't reduce n because doing so might * cut off part of a data block. */ - printk(KERN_WARNING - "proc_file_read: Read count exceeded\n"); + pr_warn("proc_file_read: count exceeded\n"); } } else /* start >= page */ { unsigned long startoff = (unsigned long)(start - page); - if (n > (PAGE_SIZE - startoff)) { - printk(KERN_ERR - "proc_file_read: Apparent buffer overflow!\n"); + if (n > (PAGE_SIZE - startoff)) /* buffer overflow? */ n = PAGE_SIZE - startoff; - } if (n > count) n = count; } @@ -569,7 +560,7 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp for (tmp = dir->subdir; tmp; tmp = tmp->next) if (strcmp(tmp->name, dp->name) == 0) { - WARN(1, KERN_WARNING "proc_dir_entry '%s/%s' already registered\n", + WARN(1, "proc_dir_entry '%s/%s' already registered\n", dir->name, dp->name); break; } @@ -830,9 +821,9 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent) if (S_ISDIR(de->mode)) parent->nlink--; de->nlink = 0; - WARN(de->subdir, KERN_WARNING "%s: removing non-empty directory " - "'%s/%s', leaking at least '%s'\n", __func__, - de->parent->name, de->name, de->subdir->name); + WARN(de->subdir, "%s: removing non-empty directory " + "'%s/%s', leaking at least '%s'\n", __func__, + de->parent->name, de->name, de->subdir->name); pde_put(de); } EXPORT_SYMBOL(remove_proc_entry); diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 70322e1a4f0..a86aebc9ba7 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -13,6 +13,7 @@ #include <linux/stat.h> #include <linux/completion.h> #include <linux/poll.h> +#include <linux/printk.h> #include <linux/file.h> #include <linux/limits.h> #include <linux/init.h> @@ -495,13 +496,13 @@ int proc_fill_super(struct super_block *s) pde_get(&proc_root); root_inode = proc_get_inode(s, &proc_root); if (!root_inode) { - printk(KERN_ERR "proc_fill_super: get root inode failed\n"); + pr_err("proc_fill_super: get root inode failed\n"); return -ENOMEM; } s->s_root = d_make_root(root_inode); if (!s->s_root) { - printk(KERN_ERR "proc_fill_super: allocate dentry failed\n"); + pr_err("proc_fill_super: allocate dentry failed\n"); return -ENOMEM; } diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 252544c0520..85ff3a4598b 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -11,6 +11,7 @@ #include <linux/sched.h> #include <linux/proc_fs.h> +#include <linux/binfmts.h> struct ctl_table_header; struct mempolicy; @@ -108,7 +109,7 @@ static inline int task_dumpable(struct task_struct *task) if (mm) dumpable = get_dumpable(mm); task_unlock(task); - if (dumpable == SUID_DUMPABLE_ENABLED) + if (dumpable == SUID_DUMP_USER) return 1; return 0; } diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index e96d4f18ca3..eda6f017f27 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -17,6 +17,7 @@ #include <linux/elfcore.h> #include <linux/vmalloc.h> #include <linux/highmem.h> +#include <linux/printk.h> #include <linux/bootmem.h> #include <linux/init.h> #include <linux/slab.h> @@ -619,7 +620,7 @@ static int __init proc_kcore_init(void) proc_root_kcore = proc_create("kcore", S_IRUSR, NULL, &proc_kcore_operations); if (!proc_root_kcore) { - printk(KERN_ERR "couldn't create /proc/kcore\n"); + pr_err("couldn't create /proc/kcore\n"); return 0; /* Always returns 0. */ } /* Store text area if it's special */ diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c index de20ec480fa..30b590f5bd3 100644 --- a/fs/proc/proc_devtree.c +++ b/fs/proc/proc_devtree.c @@ -8,6 +8,7 @@ #include <linux/time.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/printk.h> #include <linux/stat.h> #include <linux/string.h> #include <linux/of.h> @@ -110,8 +111,8 @@ void proc_device_tree_update_prop(struct proc_dir_entry *pde, if (ent->data == oldprop) break; if (ent == NULL) { - printk(KERN_WARNING "device-tree: property \"%s\" " - " does not exist\n", oldprop->name); + pr_warn("device-tree: property \"%s\" does not exist\n", + oldprop->name); } else { ent->data = newprop; ent->size = newprop->length; @@ -153,8 +154,8 @@ static const char *fixup_name(struct device_node *np, struct proc_dir_entry *de, realloc: fixed_name = kmalloc(fixup_len, GFP_KERNEL); if (fixed_name == NULL) { - printk(KERN_ERR "device-tree: Out of memory trying to fixup " - "name \"%s\"\n", name); + pr_err("device-tree: Out of memory trying to fixup " + "name \"%s\"\n", name); return name; } @@ -175,8 +176,8 @@ retry: goto retry; } - printk(KERN_WARNING "device-tree: Duplicate name in %s, " - "renamed to \"%s\"\n", np->full_name, fixed_name); + pr_warn("device-tree: Duplicate name in %s, renamed to \"%s\"\n", + np->full_name, fixed_name); return fixed_name; } diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 612df79cc6a..ac05f33a0dd 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -5,6 +5,7 @@ #include <linux/sysctl.h> #include <linux/poll.h> #include <linux/proc_fs.h> +#include <linux/printk.h> #include <linux/security.h> #include <linux/sched.h> #include <linux/namei.h> @@ -57,7 +58,7 @@ static void sysctl_print_dir(struct ctl_dir *dir) { if (dir->header.parent) sysctl_print_dir(dir->header.parent); - printk(KERN_CONT "%s/", dir->header.ctl_table[0].procname); + pr_cont("%s/", dir->header.ctl_table[0].procname); } static int namecmp(const char *name1, int len1, const char *name2, int len2) @@ -134,9 +135,9 @@ static int insert_entry(struct ctl_table_header *head, struct ctl_table *entry) else if (cmp > 0) p = &(*p)->rb_right; else { - printk(KERN_ERR "sysctl duplicate entry: "); + pr_err("sysctl duplicate entry: "); sysctl_print_dir(head->parent); - printk(KERN_CONT "/%s\n", entry->procname); + pr_cont("/%s\n", entry->procname); return -EEXIST; } } @@ -927,9 +928,9 @@ found: subdir->header.nreg++; failed: if (unlikely(IS_ERR(subdir))) { - printk(KERN_ERR "sysctl could not get directory: "); + pr_err("sysctl could not get directory: "); sysctl_print_dir(dir); - printk(KERN_CONT "/%*.*s %ld\n", + pr_cont("/%*.*s %ld\n", namelen, namelen, name, PTR_ERR(subdir)); } drop_sysctl_table(&dir->header); @@ -995,8 +996,8 @@ static int sysctl_err(const char *path, struct ctl_table *table, char *fmt, ...) vaf.fmt = fmt; vaf.va = &args; - printk(KERN_ERR "sysctl table check failed: %s/%s %pV\n", - path, table->procname, &vaf); + pr_err("sysctl table check failed: %s/%s %pV\n", + path, table->procname, &vaf); va_end(args); return -EINVAL; @@ -1510,9 +1511,9 @@ static void put_links(struct ctl_table_header *header) drop_sysctl_table(link_head); } else { - printk(KERN_ERR "sysctl link missing during unregister: "); + pr_err("sysctl link missing during unregister: "); sysctl_print_dir(parent); - printk(KERN_CONT "/%s\n", name); + pr_cont("/%s\n", name); } } } diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 0d5071d2998..b870f740ab5 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -15,6 +15,7 @@ #include <linux/export.h> #include <linux/slab.h> #include <linux/highmem.h> +#include <linux/printk.h> #include <linux/bootmem.h> #include <linux/init.h> #include <linux/crash_dump.h> @@ -175,15 +176,15 @@ static ssize_t read_vmcore(struct file *file, char __user *buffer, start = map_offset_to_paddr(*fpos, &vmcore_list, &curr_m); if (!curr_m) return -EINVAL; - if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen) - tsz = buflen; - - /* Calculate left bytes in current memory segment. */ - nr_bytes = (curr_m->size - (start - curr_m->paddr)); - if (tsz > nr_bytes) - tsz = nr_bytes; while (buflen) { + tsz = min_t(size_t, buflen, PAGE_SIZE - (start & ~PAGE_MASK)); + + /* Calculate left bytes in current memory segment. */ + nr_bytes = (curr_m->size - (start - curr_m->paddr)); + if (tsz > nr_bytes) + tsz = nr_bytes; + tmp = read_from_oldmem(buffer, tsz, &start, 1); if (tmp < 0) return tmp; @@ -198,12 +199,6 @@ static ssize_t read_vmcore(struct file *file, char __user *buffer, struct vmcore, list); start = curr_m->paddr; } - if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen) - tsz = buflen; - /* Calculate left bytes in current memory segment. */ - nr_bytes = (curr_m->size - (start - curr_m->paddr)); - if (tsz > nr_bytes) - tsz = nr_bytes; } return acc; } @@ -553,8 +548,7 @@ static int __init parse_crash_elf64_headers(void) ehdr.e_ehsize != sizeof(Elf64_Ehdr) || ehdr.e_phentsize != sizeof(Elf64_Phdr) || ehdr.e_phnum == 0) { - printk(KERN_WARNING "Warning: Core image elf header is not" - "sane\n"); + pr_warn("Warning: Core image elf header is not sane\n"); return -EINVAL; } @@ -609,8 +603,7 @@ static int __init parse_crash_elf32_headers(void) ehdr.e_ehsize != sizeof(Elf32_Ehdr) || ehdr.e_phentsize != sizeof(Elf32_Phdr) || ehdr.e_phnum == 0) { - printk(KERN_WARNING "Warning: Core image elf header is not" - "sane\n"); + pr_warn("Warning: Core image elf header is not sane\n"); return -EINVAL; } @@ -653,8 +646,7 @@ static int __init parse_crash_elf_headers(void) if (rc < 0) return rc; if (memcmp(e_ident, ELFMAG, SELFMAG) != 0) { - printk(KERN_WARNING "Warning: Core image elf header" - " not found\n"); + pr_warn("Warning: Core image elf header not found\n"); return -EINVAL; } @@ -673,8 +665,7 @@ static int __init parse_crash_elf_headers(void) /* Determine vmcore size. */ vmcore_size = get_vmcore_size_elf32(elfcorebuf); } else { - printk(KERN_WARNING "Warning: Core image elf header is not" - " sane\n"); + pr_warn("Warning: Core image elf header is not sane\n"); return -EINVAL; } return 0; @@ -690,7 +681,7 @@ static int __init vmcore_init(void) return rc; rc = parse_crash_elf_headers(); if (rc) { - printk(KERN_WARNING "Kdump: vmcore not initialized\n"); + pr_warn("Kdump: vmcore not initialized\n"); return rc; } diff --git a/fs/seq_file.c b/fs/seq_file.c index f2bc3dfd0b8..15c6304bab7 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -308,27 +308,27 @@ loff_t seq_lseek(struct file *file, loff_t offset, int whence) mutex_lock(&m->lock); m->version = file->f_version; switch (whence) { - case 1: - offset += file->f_pos; - case 0: - if (offset < 0) - break; - retval = offset; - if (offset != m->read_pos) { - while ((retval=traverse(m, offset)) == -EAGAIN) - ; - if (retval) { - /* with extreme prejudice... */ - file->f_pos = 0; - m->read_pos = 0; - m->version = 0; - m->index = 0; - m->count = 0; - } else { - m->read_pos = offset; - retval = file->f_pos = offset; - } + case SEEK_CUR: + offset += file->f_pos; + case SEEK_SET: + if (offset < 0) + break; + retval = offset; + if (offset != m->read_pos) { + while ((retval = traverse(m, offset)) == -EAGAIN) + ; + if (retval) { + /* with extreme prejudice... */ + file->f_pos = 0; + m->read_pos = 0; + m->version = 0; + m->index = 0; + m->count = 0; + } else { + m->read_pos = offset; + retval = file->f_pos = offset; } + } } file->f_version = m->version; mutex_unlock(&m->lock); diff --git a/fs/super.c b/fs/super.c index 12f12371216..7465d436420 100644 --- a/fs/super.c +++ b/fs/super.c @@ -447,14 +447,13 @@ struct super_block *sget(struct file_system_type *type, void *data) { struct super_block *s = NULL; - struct hlist_node *node; struct super_block *old; int err; retry: spin_lock(&sb_lock); if (test) { - hlist_for_each_entry(old, node, &type->fs_supers, s_instances) { + hlist_for_each_entry(old, &type->fs_supers, s_instances) { if (!test(old, data)) continue; if (!grab_super(old)) @@ -554,10 +553,9 @@ void iterate_supers_type(struct file_system_type *type, void (*f)(struct super_block *, void *), void *arg) { struct super_block *sb, *p = NULL; - struct hlist_node *node; spin_lock(&sb_lock); - hlist_for_each_entry(sb, node, &type->fs_supers, s_instances) { + hlist_for_each_entry(sb, &type->fs_supers, s_instances) { sb->s_count++; spin_unlock(&sb_lock); @@ -842,7 +840,7 @@ int get_anon_bdev(dev_t *p) else if (error) return -EAGAIN; - if ((dev & MAX_IDR_MASK) == (1 << MINORBITS)) { + if (dev == (1 << MINORBITS)) { spin_lock(&unnamed_dev_lock); ida_remove(&unnamed_dev_ida, dev); if (unnamed_dev_start > dev) diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c index 2ce9a5db6ab..15c68f9489a 100644 --- a/fs/sysfs/bin.c +++ b/fs/sysfs/bin.c @@ -461,14 +461,13 @@ const struct file_operations bin_fops = { void unmap_bin_file(struct sysfs_dirent *attr_sd) { struct bin_buffer *bb; - struct hlist_node *tmp; if (sysfs_type(attr_sd) != SYSFS_KOBJ_BIN_ATTR) return; mutex_lock(&sysfs_bin_lock); - hlist_for_each_entry(bb, tmp, &attr_sd->s_bin_attr.buffers, list) { + hlist_for_each_entry(bb, &attr_sd->s_bin_attr.buffers, list) { struct inode *inode = file_inode(bb->file); unmap_mapping_range(inode->i_mapping, 0, 0, 1); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 96fcbb85ff8..d1dba7ce75a 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1442,9 +1442,8 @@ xlog_recover_find_tid( xlog_tid_t tid) { xlog_recover_t *trans; - struct hlist_node *n; - hlist_for_each_entry(trans, n, head, r_list) { + hlist_for_each_entry(trans, head, r_list) { if (trans->r_log_tid == tid) return trans; } |