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| author | Jovi Zhang <bookjovi@gmail.com> | 2011-03-24 02:42:51 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-24 05:46:36 +0300 |
| commit | fc3d8767b2b6de955579852d7a150f1734265eaf (patch) | |
| tree | 282762d459af3ebdf0bf8661a9422d55fc74dbb1 | |
| parent | 0db0c01b53a1a421513f91573241aabafb87802a (diff) | |
| download | linux-fc3d8767b2b6de955579852d7a150f1734265eaf.tar.xz | |
procfs: fix some wrong error code usage
[root@wei 1]# cat /proc/1/mem
cat: /proc/1/mem: No such process
error code -ESRCH is wrong in this situation. Return -EPERM instead.
Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/proc/base.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index c3af15e9c070..daba13653256 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -775,7 +775,8 @@ static ssize_t mem_read(struct file * file, char __user * buf, if (!task) goto out_no_task; - if (check_mem_permission(task)) + ret = check_mem_permission(task); + if (ret) goto out; ret = -ENOMEM; @@ -845,7 +846,8 @@ static ssize_t mem_write(struct file * file, const char __user *buf, if (!task) goto out_no_task; - if (check_mem_permission(task)) + copied = check_mem_permission(task); + if (copied) goto out; copied = -ENOMEM; @@ -917,6 +919,7 @@ static ssize_t environ_read(struct file *file, char __user *buf, if (!task) goto out_no_task; + ret = -EPERM; if (!ptrace_may_access(task, PTRACE_MODE_READ)) goto out; |