diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-20 15:17:53 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2020-05-21 22:58:14 +1000 |
| commit | 64750bf01b0830021682fb6db0ec4b5619ece2d6 (patch) | |
| tree | dbe882ce3f0dcbd1636fec1eb4d51f572c653e95 | |
| parent | 96237d2e25f1c69bdfc4683e8eecc25478a2042a (diff) | |
exec: only build read_code when needed
Only build read_code when binary formats that use it are built into the
kernel.
Link: http://lkml.kernel.org/r/20200515143646.3857579-26-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
| -rw-r--r-- | fs/exec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c index 751ba7fd87e0..61f267093850 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1056,6 +1056,8 @@ out: } EXPORT_SYMBOL_GPL(kernel_read_file_from_fd); +#if defined(CONFIG_HAVE_AOUT) || defined(CONFIG_BINFMT_FLAT) || \ + defined(CONFIG_BINFMT_ELF_FDPIC) ssize_t read_code(struct file *file, unsigned long addr, loff_t pos, size_t len) { ssize_t res = vfs_read(file, (void __user *)addr, len, &pos); @@ -1064,6 +1066,7 @@ ssize_t read_code(struct file *file, unsigned long addr, loff_t pos, size_t len) return res; } EXPORT_SYMBOL(read_code); +#endif /* * Maps the mm_struct mm into the current task struct. |