diff options
Diffstat (limited to 'security/selinux/hooks.c')
| -rw-r--r-- | security/selinux/hooks.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 6d0b1ccb5b99..ac79f9ef2da8 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c | |||
| @@ -2711,12 +2711,18 @@ static int selinux_inode_permission(struct inode *inode, int mask) | |||
| 2711 | static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr) | 2711 | static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr) |
| 2712 | { | 2712 | { |
| 2713 | const struct cred *cred = current_cred(); | 2713 | const struct cred *cred = current_cred(); |
| 2714 | unsigned int ia_valid = iattr->ia_valid; | ||
| 2715 | |||
| 2716 | /* ATTR_FORCE is just used for ATTR_KILL_S[UG]ID. */ | ||
| 2717 | if (ia_valid & ATTR_FORCE) { | ||
| 2718 | ia_valid &= ~(ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_MODE | | ||
| 2719 | ATTR_FORCE); | ||
| 2720 | if (!ia_valid) | ||
| 2721 | return 0; | ||
| 2722 | } | ||
| 2714 | 2723 | ||
| 2715 | if (iattr->ia_valid & ATTR_FORCE) | 2724 | if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | |
| 2716 | return 0; | 2725 | ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET)) |
| 2717 | |||
| 2718 | if (iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | | ||
| 2719 | ATTR_ATIME_SET | ATTR_MTIME_SET)) | ||
| 2720 | return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR); | 2726 | return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR); |
| 2721 | 2727 | ||
| 2722 | return dentry_has_perm(cred, NULL, dentry, FILE__WRITE); | 2728 | return dentry_has_perm(cred, NULL, dentry, FILE__WRITE); |
