From 87bfbf679ffb1e95dd9ada694f66aafc4bfa5959 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" <ebiederm@xmission.com> Date: Mon, 26 Jun 2006 00:25:43 -0700 Subject: [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 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/proc/base.c b/fs/proc/base.c index 0762bc34d98b..fa0e6bee40fa 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1371,7 +1371,7 @@ static struct inode *proc_pid_make_inode(struct super_block * sb, struct task_st ei->type = ino; inode->i_uid = 0; inode->i_gid = 0; - if (ino == PROC_TGID_INO || ino == PROC_TID_INO || task_dumpable(task)) { + if (task_dumpable(task)) { inode->i_uid = task->euid; inode->i_gid = task->egid; } @@ -1400,7 +1400,7 @@ static int pid_revalidate(struct dentry *dentry, struct nameidata *nd) struct inode *inode = dentry->d_inode; struct task_struct *task = proc_task(inode); if (pid_alive(task)) { - if (proc_type(inode) == PROC_TGID_INO || proc_type(inode) == PROC_TID_INO || task_dumpable(task)) { + if (task_dumpable(task)) { inode->i_uid = task->euid; inode->i_gid = task->egid; } else { -- cgit v1.2.3