From: Eric W. Biederman Date: Wed, 14 Feb 2007 08:34:16 +0000 (-0800) Subject: [PATCH] sysctl: hide the sysctl proc inodes from selinux X-Git-Tag: v2.6.21-rc1~185 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86a71dbd3e81e8870d0f0e56b87875f57e58222b;p=linux-2.6 [PATCH] sysctl: hide the sysctl proc inodes from selinux Since the security checks are applied on each read and write of a sysctl file, just like they are applied when calling sys_sysctl, they are redundant on the standard VFS constructs. Since it is difficult to compute the security labels on the standard VFS constructs we just mark the sysctl inodes in proc private so selinux won't even bother with them. Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index bb16a1e788..20e8cbb343 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -47,6 +47,7 @@ static struct inode *proc_sys_make_inode(struct inode *dir, struct ctl_table *ta inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_op = &proc_sys_inode_operations; inode->i_fop = &proc_sys_file_operations; + inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */ proc_sys_refresh_inode(inode, table); out: return inode;