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authorAnatol Pomozov <anatol.pomozov@gmail.com>2012-09-13 07:11:55 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-23 08:31:32 +0400
commit39b652527457452f09b35044fb4f8b3b0eabafdf (patch)
treeacd8fda1d4e37c58c68fe0cfb9288d5d06e14441 /fs/pipe.c
parent1afc99beaf0fca3767d9b67789a7ae91c4f7a9c9 (diff)
downloadlinux-39b652527457452f09b35044fb4f8b3b0eabafdf.tar.xz
fs: Preserve error code in get_empty_filp(), part 2
Allocating a file structure in function get_empty_filp() might fail because of several reasons: - not enough memory for file structures - operation is not allowed - user is over its limit Currently the function returns NULL in all cases and we loose the exact reason of the error. All callers of get_empty_filp() assume that the function can fail with ENFILE only. Return error through pointer. Change all callers to preserve this error code. [AV: cleaned up a bit, carved the get_empty_filp() part out into a separate commit (things remaining here deal with alloc_file()), removed pipe(2) behaviour change] Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/pipe.c')
-rw-r--r--fs/pipe.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/pipe.c b/fs/pipe.c
index 39baf6c3ebb0..64a494cef0a0 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1037,13 +1037,13 @@ int create_pipe_files(struct file **res, int flags)
err = -ENFILE;
f = alloc_file(&path, FMODE_WRITE, &write_pipefifo_fops);
- if (!f)
+ if (IS_ERR(f))
goto err_dentry;
f->f_flags = O_WRONLY | (flags & (O_NONBLOCK | O_DIRECT));
res[0] = alloc_file(&path, FMODE_READ, &read_pipefifo_fops);
- if (!res[0])
+ if (IS_ERR(res[0]))
goto err_file;
path_get(&path);