diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index aa110476a95b..c62dd333ed0a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -505,6 +505,12 @@ struct iattr { */ #include <linux/quota.h> +/* + * Maximum number of layers of fs stack. Needs to be limited to + * prevent kernel stack overflow + */ +#define FILESYSTEM_MAX_STACK_DEPTH 2 + /** * enum positive_aop_returns - aop return codes with specific semantics * @@ -1578,6 +1584,11 @@ struct super_block { /* Being remounted read-only */ int s_readonly_remount; + + /* + * Indicates how deep in a filesystem stack this SB is + */ + int s_stack_depth; }; /* superblock cache pruning functions */ @@ -1835,6 +1846,7 @@ struct inode_operations { int (*atomic_open)(struct inode *, struct dentry *, struct file *, unsigned open_flag, umode_t create_mode, int *opened); + int (*dentry_open)(struct dentry *, struct file *, const struct cred *); } ____cacheline_aligned; struct seq_file; @@ -2199,6 +2211,7 @@ extern long do_sys_open(int dfd, const char __user *filename, int flags, extern struct file *filp_open(const char *, int, umode_t); extern struct file *file_open_root(struct dentry *, struct vfsmount *, const char *, int); +extern int vfs_open(const struct path *, struct file *, const struct cred *); extern struct file * dentry_open(const struct path *, int, const struct cred *); extern int filp_close(struct file *, fl_owner_t id); extern char * getname(const char __user *); @@ -2402,6 +2415,7 @@ extern sector_t bmap(struct inode *, sector_t); #endif extern int notify_change(struct dentry *, struct iattr *); extern int inode_permission(struct inode *, int); +extern int __inode_permission(struct inode *, int); extern int generic_permission(struct inode *, int); static inline bool execute_ok(struct inode *inode) @@ -2741,6 +2755,7 @@ extern int inode_change_ok(const struct inode *, struct iattr *); extern int inode_newsize_ok(const struct inode *, loff_t offset); extern void setattr_copy(struct inode *inode, const struct iattr *attr); +extern int update_time(struct inode *, struct timespec *, int); extern int file_update_time(struct file *file); extern int generic_show_options(struct seq_file *m, struct dentry *root); |