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[PATCH] selinux: disable setxattr on mountpoint labeled filesystems

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This patch disables the setting of SELinux xattrs on files created in
filesystems labeled via mountpoint labeling (mounted with the context=
option).  selinux_inode_setxattr already prevents explicit setxattr from
userspace on such filesystems, so this provides consistent behavior for
file creation.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Stephen Smalley 2005-11-08 21:34:33 -08:00 committed by Linus Torvalds
parent e517a0cd85
commit 25a74f3ba8
1 changed files with 3 additions and 0 deletions
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3
security/selinux/hooks.c
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@ -1986,6 +1986,9 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
inode_security_set_sid(inode, newsid);
if (sbsec->behavior == SECURITY_FS_USE_MNTPOINT)
return -EOPNOTSUPP;
if (name) {
namep = kstrdup(XATTR_SELINUX_SUFFIX, GFP_KERNEL);
if (!namep)