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Diffstat (limited to 'security/selinux/hooks.c')
-rw-r--r--security/selinux/hooks.c77
1 files changed, 60 insertions, 17 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 65fb5e8ea941..19a385e9968e 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -181,11 +181,10 @@ static int inode_alloc_security(struct inode *inode)
struct task_security_struct *tsec = current->security;
struct inode_security_struct *isec;
- isec = kmem_cache_alloc(sel_inode_cache, GFP_KERNEL);
+ isec = kmem_cache_zalloc(sel_inode_cache, GFP_KERNEL);
if (!isec)
return -ENOMEM;
- memset(isec, 0, sizeof(*isec));
mutex_init(&isec->lock);
INIT_LIST_HEAD(&isec->list);
isec->inode = inode;
@@ -654,11 +653,11 @@ static int superblock_doinit(struct super_block *sb, void *data)
sbsec->initialized = 1;
if (sbsec->behavior > ARRAY_SIZE(labeling_behaviors)) {
- printk(KERN_INFO "SELinux: initialized (dev %s, type %s), unknown behavior\n",
+ printk(KERN_ERR "SELinux: initialized (dev %s, type %s), unknown behavior\n",
sb->s_id, sb->s_type->name);
}
else {
- printk(KERN_INFO "SELinux: initialized (dev %s, type %s), %s\n",
+ printk(KERN_DEBUG "SELinux: initialized (dev %s, type %s), %s\n",
sb->s_id, sb->s_type->name,
labeling_behaviors[sbsec->behavior-1]);
}
@@ -1078,6 +1077,9 @@ static int inode_has_perm(struct task_struct *tsk,
struct inode_security_struct *isec;
struct avc_audit_data ad;
+ if (unlikely (IS_PRIVATE (inode)))
+ return 0;
+
tsec = tsk->security;
isec = inode->i_security;
@@ -1424,6 +1426,47 @@ static int selinux_capable(struct task_struct *tsk, int cap)
return task_has_capability(tsk,cap);
}
+static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
+{
+ int buflen, rc;
+ char *buffer, *path, *end;
+
+ rc = -ENOMEM;
+ buffer = (char*)__get_free_page(GFP_KERNEL);
+ if (!buffer)
+ goto out;
+
+ buflen = PAGE_SIZE;
+ end = buffer+buflen;
+ *--end = '\0';
+ buflen--;
+ path = end-1;
+ *path = '/';
+ while (table) {
+ const char *name = table->procname;
+ size_t namelen = strlen(name);
+ buflen -= namelen + 1;
+ if (buflen < 0)
+ goto out_free;
+ end -= namelen;
+ memcpy(end, name, namelen);
+ *--end = '/';
+ path = end;
+ table = table->parent;
+ }
+ buflen -= 4;
+ if (buflen < 0)
+ goto out_free;
+ end -= 4;
+ memcpy(end, "/sys", 4);
+ path = end;
+ rc = security_genfs_sid("proc", path, tclass, sid);
+out_free:
+ free_page((unsigned long)buffer);
+out:
+ return rc;
+}
+
static int selinux_sysctl(ctl_table *table, int op)
{
int error = 0;
@@ -1438,8 +1481,8 @@ static int selinux_sysctl(ctl_table *table, int op)
tsec = current->security;
- rc = selinux_proc_get_sid(table->de, (op == 001) ?
- SECCLASS_DIR : SECCLASS_FILE, &tsid);
+ rc = selinux_sysctl_get_sid(table, (op == 0001) ?
+ SECCLASS_DIR : SECCLASS_FILE, &tsid);
if (rc) {
/* Default to the well-defined sysctl SID. */
tsid = SECINITSID_SYSCTL;
@@ -2655,7 +2698,7 @@ static int selinux_file_send_sigiotask(struct task_struct *tsk,
struct file_security_struct *fsec;
/* struct fown_struct is never outside the context of a struct file */
- file = (struct file *)((long)fown - offsetof(struct file,f_owner));
+ file = container_of(fown, struct file, f_owner);
tsec = tsk->security;
fsec = file->f_security;
@@ -4391,7 +4434,7 @@ static int selinux_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
static int selinux_register_security (const char *name, struct security_operations *ops)
{
if (secondary_ops != original_ops) {
- printk(KERN_INFO "%s: There is already a secondary security "
+ printk(KERN_ERR "%s: There is already a secondary security "
"module registered.\n", __FUNCTION__);
return -EINVAL;
}
@@ -4408,7 +4451,7 @@ static int selinux_register_security (const char *name, struct security_operatio
static int selinux_unregister_security (const char *name, struct security_operations *ops)
{
if (ops != secondary_ops) {
- printk (KERN_INFO "%s: trying to unregister a security module "
+ printk(KERN_ERR "%s: trying to unregister a security module "
"that is not registered.\n", __FUNCTION__);
return -EINVAL;
}
@@ -4846,9 +4889,9 @@ static __init int selinux_init(void)
panic("SELinux: Unable to register with kernel.\n");
if (selinux_enforcing) {
- printk(KERN_INFO "SELinux: Starting in enforcing mode\n");
+ printk(KERN_DEBUG "SELinux: Starting in enforcing mode\n");
} else {
- printk(KERN_INFO "SELinux: Starting in permissive mode\n");
+ printk(KERN_DEBUG "SELinux: Starting in permissive mode\n");
}
#ifdef CONFIG_KEYS
@@ -4864,10 +4907,10 @@ static __init int selinux_init(void)
void selinux_complete_init(void)
{
- printk(KERN_INFO "SELinux: Completing initialization.\n");
+ printk(KERN_DEBUG "SELinux: Completing initialization.\n");
/* Set up any superblocks initialized prior to the policy load. */
- printk(KERN_INFO "SELinux: Setting up existing superblocks.\n");
+ printk(KERN_DEBUG "SELinux: Setting up existing superblocks.\n");
spin_lock(&sb_lock);
spin_lock(&sb_security_lock);
next_sb:
@@ -4925,9 +4968,9 @@ static int __init selinux_nf_ip_init(void)
if (!selinux_enabled)
goto out;
-
- printk(KERN_INFO "SELinux: Registering netfilter hooks\n");
-
+
+ printk(KERN_DEBUG "SELinux: Registering netfilter hooks\n");
+
err = nf_register_hook(&selinux_ipv4_op);
if (err)
panic("SELinux: nf_register_hook for IPv4: error %d\n", err);
@@ -4949,7 +4992,7 @@ __initcall(selinux_nf_ip_init);
#ifdef CONFIG_SECURITY_SELINUX_DISABLE
static void selinux_nf_ip_exit(void)
{
- printk(KERN_INFO "SELinux: Unregistering netfilter hooks\n");
+ printk(KERN_DEBUG "SELinux: Unregistering netfilter hooks\n");
nf_unregister_hook(&selinux_ipv4_op);
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
generated by cgit v1.2.3 (git 2.0.4) at 2025-05-14 01:22:26 +0000