* as published by the Free Software Foundation.
*/
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/ptrace.h>
extern unsigned int policydb_loaded_version;
extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
extern int selinux_compat_net;
+extern struct security_operations *security_ops;
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
int selinux_enforcing = 0;
return dentry_has_perm(current, mnt, dentry, FILE__GETATTR);
}
+static int selinux_inode_setotherxattr(struct dentry *dentry, char *name)
+{
+ if (!strncmp(name, XATTR_SECURITY_PREFIX,
+ sizeof XATTR_SECURITY_PREFIX - 1)) {
+ if (!strcmp(name, XATTR_NAME_CAPS)) {
+ if (!capable(CAP_SETFCAP))
+ return -EPERM;
+ } else if (!capable(CAP_SYS_ADMIN)) {
+ /* A different attribute in the security namespace.
+ Restrict to administrator. */
+ return -EPERM;
+ }
+ }
+
+ /* Not an attribute we recognize, so just check the
+ ordinary setattr permission. */
+ return dentry_has_perm(current, NULL, dentry, FILE__SETATTR);
+}
+
static int selinux_inode_setxattr(struct dentry *dentry, char *name, void *value, size_t size, int flags)
{
struct task_security_struct *tsec = current->security;
u32 newsid;
int rc = 0;
- if (strcmp(name, XATTR_NAME_SELINUX)) {
- if (!strncmp(name, XATTR_SECURITY_PREFIX,
- sizeof XATTR_SECURITY_PREFIX - 1) &&
- !capable(CAP_SYS_ADMIN)) {
- /* A different attribute in the security namespace.
- Restrict to administrator. */
- return -EPERM;
- }
-
- /* Not an attribute we recognize, so just check the
- ordinary setattr permission. */
- return dentry_has_perm(current, NULL, dentry, FILE__SETATTR);
- }
+ if (strcmp(name, XATTR_NAME_SELINUX))
+ return selinux_inode_setotherxattr(dentry, name);
sbsec = inode->i_sb->s_security;
if (sbsec->behavior == SECURITY_FS_USE_MNTPOINT)
static int selinux_inode_removexattr (struct dentry *dentry, char *name)
{
- if (strcmp(name, XATTR_NAME_SELINUX)) {
- if (!strncmp(name, XATTR_SECURITY_PREFIX,
- sizeof XATTR_SECURITY_PREFIX - 1) &&
- !capable(CAP_SYS_ADMIN)) {
- /* A different attribute in the security namespace.
- Restrict to administrator. */
- return -EPERM;
- }
-
- /* Not an attribute we recognize, so just check the
- ordinary setattr permission. Might want a separate
- permission for removexattr. */
- return dentry_has_perm(current, NULL, dentry, FILE__SETATTR);
- }
+ if (strcmp(name, XATTR_NAME_SELINUX))
+ return selinux_inode_setotherxattr(dentry, name);
/* No one is allowed to remove a SELinux security label.
You can change the label, but all data must be labeled. */
return len;
}
+static int selinux_inode_need_killpriv(struct dentry *dentry)
+{
+ return secondary_ops->inode_need_killpriv(dentry);
+}
+
+static int selinux_inode_killpriv(struct dentry *dentry)
+{
+ return secondary_ops->inode_killpriv(dentry);
+}
+
/* file security operations */
static int selinux_revalidate_file_permission(struct file *file, int mask)
static int selinux_task_setioprio(struct task_struct *p, int ioprio)
{
+ int rc;
+
+ rc = secondary_ops->task_setioprio(p, ioprio);
+ if (rc)
+ return rc;
+
return task_has_perm(current, p, PROCESS__SETSCHED);
}
static int selinux_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp)
{
+ int rc;
+
+ rc = secondary_ops->task_setscheduler(p, policy, lp);
+ if (rc)
+ return rc;
+
return task_has_perm(current, p, PROCESS__SETSCHED);
}
.inode_getsecurity = selinux_inode_getsecurity,
.inode_setsecurity = selinux_inode_setsecurity,
.inode_listsecurity = selinux_inode_listsecurity,
+ .inode_need_killpriv = selinux_inode_need_killpriv,
+ .inode_killpriv = selinux_inode_killpriv,
.file_permission = selinux_file_permission,
.file_alloc_security = selinux_file_alloc_security,