[PATCH] proc: Simplify the ownership rules for /proc
authorEric W. Biederman <ebiederm@xmission.com>
Mon, 26 Jun 2006 07:25:43 +0000 (00:25 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Mon, 26 Jun 2006 16:58:23 +0000 (09:58 -0700)
commit87bfbf679ffb1e95dd9ada694f66aafc4bfa5959
treef4f549435f64bd1c42594dcb4d27d9de92e379f6
parent167965495153ba9829d0a34b6800dbf5d94de8c8
[PATCH] proc: Simplify the ownership rules for /proc

Currently in /proc if the task is dumpable all of files are owned by the tasks
effective users.  Otherwise the files are owned by root.  Unless it is the
/proc/<tgid>/ or /proc/<tgid>/task/<pid> directory in that case we always make
the directory owned by the effective user.

However the special case for directories is pointless except as a way to read
the effective user, because the permissions on both of those directories are
world readable, and executable.

/proc/<tgid>/status provides a much better way to read a processes effecitve
userid, so it is silly to try to provide that on the directory.

So this patch simplifies the code by removing a pointless special case and
gets us one step closer to being able to remove the hard coded /proc inode
numbers.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fs/proc/base.c