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authorJames Morris <jmorris@namei.org>2009-01-30 10:05:06 +1100
committerJames Morris <jmorris@namei.org>2009-02-02 09:20:34 +1100
commit5626d3e86141390c8efc7bcb929b6a4b58b00480 (patch)
treeaafff4163d6bc40f78c025fe3c4f8eda232ef5c9 /security/selinux
parent95c14904b6f6f8a35365f0c58d530c85b4fb96b4 (diff)
downloadvexpress-lsk-5626d3e86141390c8efc7bcb929b6a4b58b00480.tar.gz
selinux: remove hooks which simply defer to capabilities
Remove SELinux hooks which do nothing except defer to the capabilites hooks (or in one case, replicates the function). Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Diffstat (limited to 'security/selinux')
-rw-r--r--security/selinux/hooks.c68
1 files changed, 10 insertions, 58 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d9604794a4d..a69d6f8970c 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1892,6 +1892,16 @@ static int selinux_capset(struct cred *new, const struct cred *old,
return cred_has_perm(old, new, PROCESS__SETCAP);
}
+/*
+ * (This comment used to live with the selinux_task_setuid hook,
+ * which was removed).
+ *
+ * Since setuid only affects the current process, and since the SELinux
+ * controls are not based on the Linux identity attributes, SELinux does not
+ * need to control this operation. However, SELinux does control the use of
+ * the CAP_SETUID and CAP_SETGID capabilities using the capable hook.
+ */
+
static int selinux_capable(struct task_struct *tsk, const struct cred *cred,
int cap, int audit)
{
@@ -2909,16 +2919,6 @@ static int selinux_inode_listsecurity(struct inode *inode, char *buffer, size_t
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);
-}
-
static void selinux_inode_getsecid(const struct inode *inode, u32 *secid)
{
struct inode_security_struct *isec = inode->i_security;
@@ -3288,29 +3288,6 @@ static int selinux_kernel_create_files_as(struct cred *new, struct inode *inode)
return 0;
}
-static int selinux_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
-{
- /* Since setuid only affects the current process, and
- since the SELinux controls are not based on the Linux
- identity attributes, SELinux does not need to control
- this operation. However, SELinux does control the use
- of the CAP_SETUID and CAP_SETGID capabilities using the
- capable hook. */
- return 0;
-}
-
-static int selinux_task_fix_setuid(struct cred *new, const struct cred *old,
- int flags)
-{
- return secondary_ops->task_fix_setuid(new, old, flags);
-}
-
-static int selinux_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
-{
- /* See the comment for setuid above. */
- return 0;
-}
-
static int selinux_task_setpgid(struct task_struct *p, pid_t pgid)
{
return current_has_perm(p, PROCESS__SETPGID);
@@ -3331,12 +3308,6 @@ static void selinux_task_getsecid(struct task_struct *p, u32 *secid)
*secid = task_sid(p);
}
-static int selinux_task_setgroups(struct group_info *group_info)
-{
- /* See the comment for setuid above. */
- return 0;
-}
-
static int selinux_task_setnice(struct task_struct *p, int nice)
{
int rc;
@@ -3417,18 +3388,6 @@ static int selinux_task_kill(struct task_struct *p, struct siginfo *info,
return rc;
}
-static int selinux_task_prctl(int option,
- unsigned long arg2,
- unsigned long arg3,
- unsigned long arg4,
- unsigned long arg5)
-{
- /* The current prctl operations do not appear to require
- any SELinux controls since they merely observe or modify
- the state of the current process. */
- return secondary_ops->task_prctl(option, arg2, arg3, arg4, arg5);
-}
-
static int selinux_task_wait(struct task_struct *p)
{
return task_has_perm(p, current, PROCESS__SIGCHLD);
@@ -5563,8 +5522,6 @@ static struct security_operations selinux_ops = {
.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,
.inode_getsecid = selinux_inode_getsecid,
.file_permission = selinux_file_permission,
@@ -5586,14 +5543,10 @@ static struct security_operations selinux_ops = {
.cred_prepare = selinux_cred_prepare,
.kernel_act_as = selinux_kernel_act_as,
.kernel_create_files_as = selinux_kernel_create_files_as,
- .task_setuid = selinux_task_setuid,
- .task_fix_setuid = selinux_task_fix_setuid,
- .task_setgid = selinux_task_setgid,
.task_setpgid = selinux_task_setpgid,
.task_getpgid = selinux_task_getpgid,
.task_getsid = selinux_task_getsid,
.task_getsecid = selinux_task_getsecid,
- .task_setgroups = selinux_task_setgroups,
.task_setnice = selinux_task_setnice,
.task_setioprio = selinux_task_setioprio,
.task_getioprio = selinux_task_getioprio,
@@ -5603,7 +5556,6 @@ static struct security_operations selinux_ops = {
.task_movememory = selinux_task_movememory,
.task_kill = selinux_task_kill,
.task_wait = selinux_task_wait,
- .task_prctl = selinux_task_prctl,
.task_to_inode = selinux_task_to_inode,
.ipc_permission = selinux_ipc_permission,