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-rw-r--r--security/selinux/hooks.c505
1 files changed, 303 insertions, 202 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 8d8b69c5664e..5c9f25ba1c95 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -13,8 +13,8 @@
* Eric Paris <eparis@redhat.com>
* Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
* <dgoeddel@trustedcs.com>
- * Copyright (C) 2006, 2007 Hewlett-Packard Development Company, L.P.
- * Paul Moore <paul.moore@hp.com>
+ * Copyright (C) 2006, 2007, 2009 Hewlett-Packard Development Company, L.P.
+ * Paul Moore <paul.moore@hp.com>
* Copyright (C) 2007 Hitachi Software Engineering Co., Ltd.
* Yuichi Nakamura <ynakam@hitachisoft.jp>
*
@@ -76,6 +76,7 @@
#include <linux/selinux.h>
#include <linux/mutex.h>
#include <linux/posix-timers.h>
+#include <linux/syslog.h>
#include "avc.h"
#include "objsec.h"
@@ -91,7 +92,6 @@
#define NUM_SEL_MNT_OPTS 5
-extern unsigned int policydb_loaded_version;
extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
extern struct security_operations *security_ops;
@@ -126,18 +126,6 @@ __setup("selinux=", selinux_enabled_setup);
int selinux_enabled = 1;
#endif
-
-/*
- * Minimal support for a secondary security module,
- * just to allow the use of the capability module.
- */
-static struct security_operations *secondary_ops;
-
-/* Lists of inode and superblock security structures initialized
- before the policy was loaded. */
-static LIST_HEAD(superblock_security_head);
-static DEFINE_SPINLOCK(sb_security_lock);
-
static struct kmem_cache *sel_inode_cache;
/**
@@ -273,7 +261,6 @@ static int superblock_alloc_security(struct super_block *sb)
return -ENOMEM;
mutex_init(&sbsec->lock);
- INIT_LIST_HEAD(&sbsec->list);
INIT_LIST_HEAD(&sbsec->isec_head);
spin_lock_init(&sbsec->isec_lock);
sbsec->sb = sb;
@@ -288,40 +275,34 @@ static int superblock_alloc_security(struct super_block *sb)
static void superblock_free_security(struct super_block *sb)
{
struct superblock_security_struct *sbsec = sb->s_security;
-
- spin_lock(&sb_security_lock);
- if (!list_empty(&sbsec->list))
- list_del_init(&sbsec->list);
- spin_unlock(&sb_security_lock);
-
sb->s_security = NULL;
kfree(sbsec);
}
static int sk_alloc_security(struct sock *sk, int family, gfp_t priority)
{
- struct sk_security_struct *ssec;
+ struct sk_security_struct *sksec;
- ssec = kzalloc(sizeof(*ssec), priority);
- if (!ssec)
+ sksec = kzalloc(sizeof(*sksec), priority);
+ if (!sksec)
return -ENOMEM;
- ssec->peer_sid = SECINITSID_UNLABELED;
- ssec->sid = SECINITSID_UNLABELED;
- sk->sk_security = ssec;
+ sksec->peer_sid = SECINITSID_UNLABELED;
+ sksec->sid = SECINITSID_UNLABELED;
+ sk->sk_security = sksec;
- selinux_netlbl_sk_security_reset(ssec);
+ selinux_netlbl_sk_security_reset(sksec);
return 0;
}
static void sk_free_security(struct sock *sk)
{
- struct sk_security_struct *ssec = sk->sk_security;
+ struct sk_security_struct *sksec = sk->sk_security;
sk->sk_security = NULL;
- selinux_netlbl_sk_security_free(ssec);
- kfree(ssec);
+ selinux_netlbl_sk_security_free(sksec);
+ kfree(sksec);
}
/* The security server must be initialized before
@@ -330,7 +311,7 @@ extern int ss_initialized;
/* The file system's label must be initialized prior to use. */
-static char *labeling_behaviors[6] = {
+static const char *labeling_behaviors[6] = {
"uses xattr",
"uses transition SIDs",
"uses task SIDs",
@@ -448,6 +429,10 @@ static int sb_finish_set_opts(struct super_block *sb)
sbsec->behavior > ARRAY_SIZE(labeling_behaviors))
sbsec->flags &= ~SE_SBLABELSUPP;
+ /* Special handling for sysfs. Is genfs but also has setxattr handler*/
+ if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0)
+ sbsec->flags |= SE_SBLABELSUPP;
+
/* Initialize the root inode. */
rc = inode_doinit_with_dentry(root_inode, root);
@@ -615,10 +600,6 @@ static int selinux_set_mnt_opts(struct super_block *sb,
/* Defer initialization until selinux_complete_init,
after the initial policy is loaded and the security
server is ready to handle calls. */
- spin_lock(&sb_security_lock);
- if (list_empty(&sbsec->list))
- list_add(&sbsec->list, &superblock_security_head);
- spin_unlock(&sb_security_lock);
goto out;
}
rc = -EINVAL;
@@ -809,16 +790,10 @@ static void selinux_sb_clone_mnt_opts(const struct super_block *oldsb,
/*
* if the parent was able to be mounted it clearly had no special lsm
- * mount options. thus we can safely put this sb on the list and deal
- * with it later
+ * mount options. thus we can safely deal with this superblock later
*/
- if (!ss_initialized) {
- spin_lock(&sb_security_lock);
- if (list_empty(&newsbsec->list))
- list_add(&newsbsec->list, &superblock_security_head);
- spin_unlock(&sb_security_lock);
+ if (!ss_initialized)
return;
- }
/* how can we clone if the old one wasn't set up?? */
BUG_ON(!(oldsbsec->flags & SE_SBINITIALIZED));
@@ -1479,14 +1454,14 @@ static int task_has_capability(struct task_struct *tsk,
const struct cred *cred,
int cap, int audit)
{
- struct avc_audit_data ad;
+ struct common_audit_data ad;
struct av_decision avd;
u16 sclass;
u32 sid = cred_sid(cred);
u32 av = CAP_TO_MASK(cap);
int rc;
- AVC_AUDIT_DATA_INIT(&ad, CAP);
+ COMMON_AUDIT_DATA_INIT(&ad, CAP);
ad.tsk = tsk;
ad.u.cap = cap;
@@ -1525,12 +1500,14 @@ static int task_has_system(struct task_struct *tsk,
static int inode_has_perm(const struct cred *cred,
struct inode *inode,
u32 perms,
- struct avc_audit_data *adp)
+ struct common_audit_data *adp)
{
struct inode_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid;
+ validate_creds(cred);
+
if (unlikely(IS_PRIVATE(inode)))
return 0;
@@ -1539,7 +1516,7 @@ static int inode_has_perm(const struct cred *cred,
if (!adp) {
adp = &ad;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.inode = inode;
}
@@ -1555,9 +1532,9 @@ static inline int dentry_has_perm(const struct cred *cred,
u32 av)
{
struct inode *inode = dentry->d_inode;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.mnt = mnt;
ad.u.fs.path.dentry = dentry;
return inode_has_perm(cred, inode, av, &ad);
@@ -1577,11 +1554,11 @@ static int file_has_perm(const struct cred *cred,
{
struct file_security_struct *fsec = file->f_security;
struct inode *inode = file->f_path.dentry->d_inode;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = cred_sid(cred);
int rc;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path = file->f_path;
if (sid != fsec->sid) {
@@ -1612,7 +1589,7 @@ static int may_create(struct inode *dir,
struct inode_security_struct *dsec;
struct superblock_security_struct *sbsec;
u32 sid, newsid;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
int rc;
dsec = dir->i_security;
@@ -1621,7 +1598,7 @@ static int may_create(struct inode *dir,
sid = tsec->sid;
newsid = tsec->create_sid;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = dentry;
rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR,
@@ -1665,7 +1642,7 @@ static int may_link(struct inode *dir,
{
struct inode_security_struct *dsec, *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
u32 av;
int rc;
@@ -1673,7 +1650,7 @@ static int may_link(struct inode *dir,
dsec = dir->i_security;
isec = dentry->d_inode->i_security;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = dentry;
av = DIR__SEARCH;
@@ -1708,7 +1685,7 @@ static inline int may_rename(struct inode *old_dir,
struct dentry *new_dentry)
{
struct inode_security_struct *old_dsec, *new_dsec, *old_isec, *new_isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
u32 av;
int old_is_dir, new_is_dir;
@@ -1719,7 +1696,7 @@ static inline int may_rename(struct inode *old_dir,
old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
new_dsec = new_dir->i_security;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = old_dentry;
rc = avc_has_perm(sid, old_dsec->sid, SECCLASS_DIR,
@@ -1761,7 +1738,7 @@ static inline int may_rename(struct inode *old_dir,
static int superblock_has_perm(const struct cred *cred,
struct super_block *sb,
u32 perms,
- struct avc_audit_data *ad)
+ struct common_audit_data *ad)
{
struct superblock_security_struct *sbsec;
u32 sid = cred_sid(cred);
@@ -1855,12 +1832,12 @@ static inline u32 open_file_to_av(struct file *file)
/* Hook functions begin here. */
-static int selinux_ptrace_may_access(struct task_struct *child,
+static int selinux_ptrace_access_check(struct task_struct *child,
unsigned int mode)
{
int rc;
- rc = cap_ptrace_may_access(child, mode);
+ rc = cap_ptrace_access_check(child, mode);
if (rc)
return rc;
@@ -2044,29 +2021,30 @@ static int selinux_quota_on(struct dentry *dentry)
return dentry_has_perm(cred, NULL, dentry, FILE__QUOTAON);
}
-static int selinux_syslog(int type)
+static int selinux_syslog(int type, bool from_file)
{
int rc;
- rc = cap_syslog(type);
+ rc = cap_syslog(type, from_file);
if (rc)
return rc;
switch (type) {
- case 3: /* Read last kernel messages */
- case 10: /* Return size of the log buffer */
+ case SYSLOG_ACTION_READ_ALL: /* Read last kernel messages */
+ case SYSLOG_ACTION_SIZE_BUFFER: /* Return size of the log buffer */
rc = task_has_system(current, SYSTEM__SYSLOG_READ);
break;
- case 6: /* Disable logging to console */
- case 7: /* Enable logging to console */
- case 8: /* Set level of messages printed to console */
+ case SYSLOG_ACTION_CONSOLE_OFF: /* Disable logging to console */
+ case SYSLOG_ACTION_CONSOLE_ON: /* Enable logging to console */
+ /* Set level of messages printed to console */
+ case SYSLOG_ACTION_CONSOLE_LEVEL:
rc = task_has_system(current, SYSTEM__SYSLOG_CONSOLE);
break;
- case 0: /* Close log */
- case 1: /* Open log */
- case 2: /* Read from log */
- case 4: /* Read/clear last kernel messages */
- case 5: /* Clear ring buffer */
+ case SYSLOG_ACTION_CLOSE: /* Close log */
+ case SYSLOG_ACTION_OPEN: /* Open log */
+ case SYSLOG_ACTION_READ: /* Read from log */
+ case SYSLOG_ACTION_READ_CLEAR: /* Read/clear last kernel messages */
+ case SYSLOG_ACTION_CLEAR: /* Clear ring buffer */
default:
rc = task_has_system(current, SYSTEM__SYSLOG_MOD);
break;
@@ -2101,7 +2079,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
const struct task_security_struct *old_tsec;
struct task_security_struct *new_tsec;
struct inode_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
struct inode *inode = bprm->file->f_path.dentry->d_inode;
int rc;
@@ -2139,7 +2117,7 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
return rc;
}
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path = bprm->file->f_path;
if (bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)
@@ -2232,7 +2210,7 @@ extern struct dentry *selinux_null;
static inline void flush_unauthorized_files(const struct cred *cred,
struct files_struct *files)
{
- struct avc_audit_data ad;
+ struct common_audit_data ad;
struct file *file, *devnull = NULL;
struct tty_struct *tty;
struct fdtable *fdt;
@@ -2266,7 +2244,7 @@ static inline void flush_unauthorized_files(const struct cred *cred,
/* Revalidate access to inherited open files. */
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
spin_lock(&files->file_lock);
for (;;) {
@@ -2360,7 +2338,7 @@ static void selinux_bprm_committing_creds(struct linux_binprm *bprm)
initrlim = init_task.signal->rlim + i;
rlim->rlim_cur = min(rlim->rlim_max, initrlim->rlim_cur);
}
- update_rlimit_cpu(rlim->rlim_cur);
+ update_rlimit_cpu(current->signal->rlim[RLIMIT_CPU].rlim_cur);
}
}
@@ -2405,7 +2383,7 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
/* Wake up the parent if it is waiting so that it can recheck
* wait permission to the new task SID. */
read_lock(&tasklist_lock);
- wake_up_interruptible(&current->real_parent->signal->wait_chldexit);
+ __wake_up_parent(current, current->real_parent);
read_unlock(&tasklist_lock);
}
@@ -2515,7 +2493,7 @@ out:
static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
{
const struct cred *cred = current_cred();
- struct avc_audit_data ad;
+ struct common_audit_data ad;
int rc;
rc = superblock_doinit(sb, data);
@@ -2526,7 +2504,7 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
if (flags & MS_KERNMOUNT)
return 0;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = sb->s_root;
return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
}
@@ -2534,9 +2512,9 @@ static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
static int selinux_sb_statfs(struct dentry *dentry)
{
const struct cred *cred = current_cred();
- struct avc_audit_data ad;
+ struct common_audit_data ad;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = dentry->d_sb->s_root;
return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
}
@@ -2711,12 +2689,18 @@ static int selinux_inode_permission(struct inode *inode, int mask)
static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
{
const struct cred *cred = current_cred();
+ unsigned int ia_valid = iattr->ia_valid;
+
+ /* ATTR_FORCE is just used for ATTR_KILL_S[UG]ID. */
+ if (ia_valid & ATTR_FORCE) {
+ ia_valid &= ~(ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_MODE |
+ ATTR_FORCE);
+ if (!ia_valid)
+ return 0;
+ }
- if (iattr->ia_valid & ATTR_FORCE)
- return 0;
-
- if (iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
- ATTR_ATIME_SET | ATTR_MTIME_SET))
+ if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
+ ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET))
return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR);
return dentry_has_perm(cred, NULL, dentry, FILE__WRITE);
@@ -2756,7 +2740,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
struct inode *inode = dentry->d_inode;
struct inode_security_struct *isec = inode->i_security;
struct superblock_security_struct *sbsec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 newsid, sid = current_sid();
int rc = 0;
@@ -2770,7 +2754,7 @@ static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
if (!is_owner_or_cap(inode))
return -EPERM;
- AVC_AUDIT_DATA_INIT(&ad, FS);
+ COMMON_AUDIT_DATA_INIT(&ad, FS);
ad.u.fs.path.dentry = dentry;
rc = avc_has_perm(sid, isec->sid, isec->sclass,
@@ -2915,6 +2899,7 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
return rc;
isec->sid = newsid;
+ isec->initialized = 1;
return 0;
}
@@ -2939,11 +2924,6 @@ static int selinux_revalidate_file_permission(struct file *file, int mask)
const struct cred *cred = current_cred();
struct inode *inode = file->f_path.dentry->d_inode;
- if (!mask) {
- /* No permission to check. Existence test. */
- return 0;
- }
-
/* file_mask_to_av won't add FILE__WRITE if MAY_APPEND is set */
if ((file->f_flags & O_APPEND) && (mask & MAY_WRITE))
mask |= MAY_APPEND;
@@ -2954,10 +2934,20 @@ static int selinux_revalidate_file_permission(struct file *file, int mask)
static int selinux_file_permission(struct file *file, int mask)
{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct file_security_struct *fsec = file->f_security;
+ struct inode_security_struct *isec = inode->i_security;
+ u32 sid = current_sid();
+
if (!mask)
/* No permission to check. Existence test. */
return 0;
+ if (sid == fsec->sid && fsec->isid == isec->sid &&
+ fsec->pseqno == avc_policy_seqno())
+ /* No change since dentry_open check. */
+ return 0;
+
return selinux_revalidate_file_permission(file, mask);
}
@@ -2987,13 +2977,15 @@ static int selinux_file_ioctl(struct file *file, unsigned int cmd,
return file_has_perm(cred, file, av);
}
+static int default_noexec;
+
static int file_map_prot_check(struct file *file, unsigned long prot, int shared)
{
const struct cred *cred = current_cred();
int rc = 0;
-#ifndef CONFIG_PPC32
- if ((prot & PROT_EXEC) && (!file || (!shared && (prot & PROT_WRITE)))) {
+ if (default_noexec &&
+ (prot & PROT_EXEC) && (!file || (!shared && (prot & PROT_WRITE)))) {
/*
* We are making executable an anonymous mapping or a
* private file mapping that will also be writable.
@@ -3003,7 +2995,6 @@ static int file_map_prot_check(struct file *file, unsigned long prot, int shared
if (rc)
goto error;
}
-#endif
if (file) {
/* read access is always possible with a mapping */
@@ -3064,8 +3055,8 @@ static int selinux_file_mprotect(struct vm_area_struct *vma,
if (selinux_checkreqprot)
prot = reqprot;
-#ifndef CONFIG_PPC32
- if ((prot & PROT_EXEC) && !(vma->vm_flags & VM_EXEC)) {
+ if (default_noexec &&
+ (prot & PROT_EXEC) && !(vma->vm_flags & VM_EXEC)) {
int rc = 0;
if (vma->vm_start >= vma->vm_mm->start_brk &&
vma->vm_end <= vma->vm_mm->brk) {
@@ -3087,7 +3078,6 @@ static int selinux_file_mprotect(struct vm_area_struct *vma,
if (rc)
return rc;
}
-#endif
return file_map_prot_check(vma->vm_file, prot, vma->vm_flags&VM_SHARED);
}
@@ -3220,12 +3210,29 @@ static int selinux_task_create(unsigned long clone_flags)
}
/*
+ * allocate the SELinux part of blank credentials
+ */
+static int selinux_cred_alloc_blank(struct cred *cred, gfp_t gfp)
+{
+ struct task_security_struct *tsec;
+
+ tsec = kzalloc(sizeof(struct task_security_struct), gfp);
+ if (!tsec)
+ return -ENOMEM;
+
+ cred->security = tsec;
+ return 0;
+}
+
+/*
* detach and free the LSM part of a set of credentials
*/
static void selinux_cred_free(struct cred *cred)
{
struct task_security_struct *tsec = cred->security;
- cred->security = NULL;
+
+ BUG_ON((unsigned long) cred->security < PAGE_SIZE);
+ cred->security = (void *) 0x7UL;
kfree(tsec);
}
@@ -3249,6 +3256,17 @@ static int selinux_cred_prepare(struct cred *new, const struct cred *old,
}
/*
+ * transfer the SELinux data to a blank set of creds
+ */
+static void selinux_cred_transfer(struct cred *new, const struct cred *old)
+{
+ const struct task_security_struct *old_tsec = old->security;
+ struct task_security_struct *tsec = new->security;
+
+ *tsec = *old_tsec;
+}
+
+/*
* set the security data for a kernel service
* - all the creation contexts are set to unlabelled
*/
@@ -3289,7 +3307,21 @@ static int selinux_kernel_create_files_as(struct cred *new, struct inode *inode)
if (ret == 0)
tsec->create_sid = isec->sid;
- return 0;
+ return ret;
+}
+
+static int selinux_kernel_module_request(char *kmod_name)
+{
+ u32 sid;
+ struct common_audit_data ad;
+
+ sid = task_sid(current);
+
+ COMMON_AUDIT_DATA_INIT(&ad, KMOD);
+ ad.u.kmod_name = kmod_name;
+
+ return avc_has_perm(sid, SECINITSID_KERNEL, SECCLASS_SYSTEM,
+ SYSTEM__MODULE_REQUEST, &ad);
}
static int selinux_task_setpgid(struct task_struct *p, pid_t pgid)
@@ -3409,7 +3441,7 @@ static void selinux_task_to_inode(struct task_struct *p,
/* Returns error only if unable to parse addresses */
static int selinux_parse_skb_ipv4(struct sk_buff *skb,
- struct avc_audit_data *ad, u8 *proto)
+ struct common_audit_data *ad, u8 *proto)
{
int offset, ihlen, ret = -EINVAL;
struct iphdr _iph, *ih;
@@ -3490,7 +3522,7 @@ out:
/* Returns error only if unable to parse addresses */
static int selinux_parse_skb_ipv6(struct sk_buff *skb,
- struct avc_audit_data *ad, u8 *proto)
+ struct common_audit_data *ad, u8 *proto)
{
u8 nexthdr;
int ret = -EINVAL, offset;
@@ -3561,7 +3593,7 @@ out:
#endif /* IPV6 */
-static int selinux_parse_skb(struct sk_buff *skb, struct avc_audit_data *ad,
+static int selinux_parse_skb(struct sk_buff *skb, struct common_audit_data *ad,
char **_addrp, int src, u8 *proto)
{
char *addrp;
@@ -3643,7 +3675,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
u32 perms)
{
struct inode_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid;
int err = 0;
@@ -3653,7 +3685,7 @@ static int socket_has_perm(struct task_struct *task, struct socket *sock,
goto out;
sid = task_sid(task);
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.sk = sock->sk;
err = avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
@@ -3740,7 +3772,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
if (family == PF_INET || family == PF_INET6) {
char *addrp;
struct inode_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
struct sockaddr_in *addr4 = NULL;
struct sockaddr_in6 *addr6 = NULL;
unsigned short snum;
@@ -3769,7 +3801,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
snum, &sid);
if (err)
goto out;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.sport = htons(snum);
ad.u.net.family = family;
err = avc_has_perm(isec->sid, sid,
@@ -3802,7 +3834,7 @@ static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, in
if (err)
goto out;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.sport = htons(snum);
ad.u.net.family = family;
@@ -3836,7 +3868,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
isec = SOCK_INODE(sock)->i_security;
if (isec->sclass == SECCLASS_TCP_SOCKET ||
isec->sclass == SECCLASS_DCCP_SOCKET) {
- struct avc_audit_data ad;
+ struct common_audit_data ad;
struct sockaddr_in *addr4 = NULL;
struct sockaddr_in6 *addr6 = NULL;
unsigned short snum;
@@ -3861,7 +3893,7 @@ static int selinux_socket_connect(struct socket *sock, struct sockaddr *address,
perm = (isec->sclass == SECCLASS_TCP_SOCKET) ?
TCP_SOCKET__NAME_CONNECT : DCCP_SOCKET__NAME_CONNECT;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.dport = htons(snum);
ad.u.net.family = sk->sk_family;
err = avc_has_perm(isec->sid, sid, isec->sclass, perm, &ad);
@@ -3948,16 +3980,16 @@ static int selinux_socket_unix_stream_connect(struct socket *sock,
struct socket *other,
struct sock *newsk)
{
- struct sk_security_struct *ssec;
+ struct sk_security_struct *sksec;
struct inode_security_struct *isec;
struct inode_security_struct *other_isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
int err;
isec = SOCK_INODE(sock)->i_security;
other_isec = SOCK_INODE(other)->i_security;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.sk = other->sk;
err = avc_has_perm(isec->sid, other_isec->sid,
@@ -3967,13 +3999,13 @@ static int selinux_socket_unix_stream_connect(struct socket *sock,
return err;
/* connecting socket */
- ssec = sock->sk->sk_security;
- ssec->peer_sid = other_isec->sid;
+ sksec = sock->sk->sk_security;
+ sksec->peer_sid = other_isec->sid;
/* server child socket */
- ssec = newsk->sk_security;
- ssec->peer_sid = isec->sid;
- err = security_sid_mls_copy(other_isec->sid, ssec->peer_sid, &ssec->sid);
+ sksec = newsk->sk_security;
+ sksec->peer_sid = isec->sid;
+ err = security_sid_mls_copy(other_isec->sid, sksec->peer_sid, &sksec->sid);
return err;
}
@@ -3983,13 +4015,13 @@ static int selinux_socket_unix_may_send(struct socket *sock,
{
struct inode_security_struct *isec;
struct inode_security_struct *other_isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
int err;
isec = SOCK_INODE(sock)->i_security;
other_isec = SOCK_INODE(other)->i_security;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.sk = other->sk;
err = avc_has_perm(isec->sid, other_isec->sid,
@@ -4002,7 +4034,7 @@ static int selinux_socket_unix_may_send(struct socket *sock,
static int selinux_inet_sys_rcv_skb(int ifindex, char *addrp, u16 family,
u32 peer_sid,
- struct avc_audit_data *ad)
+ struct common_audit_data *ad)
{
int err;
u32 if_sid;
@@ -4030,11 +4062,11 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
struct sk_security_struct *sksec = sk->sk_security;
u32 peer_sid;
u32 sk_sid = sksec->sid;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
char *addrp;
- AVC_AUDIT_DATA_INIT(&ad, NET);
- ad.u.net.netif = skb->iif;
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
+ ad.u.net.netif = skb->skb_iif;
ad.u.net.family = family;
err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
if (err)
@@ -4071,7 +4103,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
struct sk_security_struct *sksec = sk->sk_security;
u16 family = sk->sk_family;
u32 sk_sid = sksec->sid;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
char *addrp;
u8 secmark_active;
u8 peerlbl_active;
@@ -4095,8 +4127,8 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
if (!secmark_active && !peerlbl_active)
return 0;
- AVC_AUDIT_DATA_INIT(&ad, NET);
- ad.u.net.netif = skb->iif;
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
+ ad.u.net.netif = skb->skb_iif;
ad.u.net.family = family;
err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
if (err)
@@ -4108,7 +4140,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
err = selinux_skb_peerlbl_sid(skb, family, &peer_sid);
if (err)
return err;
- err = selinux_inet_sys_rcv_skb(skb->iif, addrp, family,
+ err = selinux_inet_sys_rcv_skb(skb->skb_iif, addrp, family,
peer_sid, &ad);
if (err) {
selinux_netlbl_err(skb, err, 0);
@@ -4136,7 +4168,7 @@ static int selinux_socket_getpeersec_stream(struct socket *sock, char __user *op
int err = 0;
char *scontext;
u32 scontext_len;
- struct sk_security_struct *ssec;
+ struct sk_security_struct *sksec;
struct inode_security_struct *isec;
u32 peer_sid = SECSID_NULL;
@@ -4144,8 +4176,8 @@ static int selinux_socket_getpeersec_stream(struct socket *sock, char __user *op
if (isec->sclass == SECCLASS_UNIX_STREAM_SOCKET ||
isec->sclass == SECCLASS_TCP_SOCKET) {
- ssec = sock->sk->sk_security;
- peer_sid = ssec->peer_sid;
+ sksec = sock->sk->sk_security;
+ peer_sid = sksec->peer_sid;
}
if (peer_sid == SECSID_NULL) {
err = -ENOPROTOOPT;
@@ -4212,14 +4244,14 @@ static void selinux_sk_free_security(struct sock *sk)
static void selinux_sk_clone_security(const struct sock *sk, struct sock *newsk)
{
- struct sk_security_struct *ssec = sk->sk_security;
- struct sk_security_struct *newssec = newsk->sk_security;
+ struct sk_security_struct *sksec = sk->sk_security;
+ struct sk_security_struct *newsksec = newsk->sk_security;
- newssec->sid = ssec->sid;
- newssec->peer_sid = ssec->peer_sid;
- newssec->sclass = ssec->sclass;
+ newsksec->sid = sksec->sid;
+ newsksec->peer_sid = sksec->peer_sid;
+ newsksec->sclass = sksec->sclass;
- selinux_netlbl_sk_security_reset(newssec);
+ selinux_netlbl_sk_security_reset(newsksec);
}
static void selinux_sk_getsecid(struct sock *sk, u32 *secid)
@@ -4309,6 +4341,59 @@ static void selinux_req_classify_flow(const struct request_sock *req,
fl->secid = req->secid;
}
+static int selinux_tun_dev_create(void)
+{
+ u32 sid = current_sid();
+
+ /* we aren't taking into account the "sockcreate" SID since the socket
+ * that is being created here is not a socket in the traditional sense,
+ * instead it is a private sock, accessible only to the kernel, and
+ * representing a wide range of network traffic spanning multiple
+ * connections unlike traditional sockets - check the TUN driver to
+ * get a better understanding of why this socket is special */
+
+ return avc_has_perm(sid, sid, SECCLASS_TUN_SOCKET, TUN_SOCKET__CREATE,
+ NULL);
+}
+
+static void selinux_tun_dev_post_create(struct sock *sk)
+{
+ struct sk_security_struct *sksec = sk->sk_security;
+
+ /* we don't currently perform any NetLabel based labeling here and it
+ * isn't clear that we would want to do so anyway; while we could apply
+ * labeling without the support of the TUN user the resulting labeled
+ * traffic from the other end of the connection would almost certainly
+ * cause confusion to the TUN user that had no idea network labeling
+ * protocols were being used */
+
+ /* see the comments in selinux_tun_dev_create() about why we don't use
+ * the sockcreate SID here */
+
+ sksec->sid = current_sid();
+ sksec->sclass = SECCLASS_TUN_SOCKET;
+}
+
+static int selinux_tun_dev_attach(struct sock *sk)
+{
+ struct sk_security_struct *sksec = sk->sk_security;
+ u32 sid = current_sid();
+ int err;
+
+ err = avc_has_perm(sid, sksec->sid, SECCLASS_TUN_SOCKET,
+ TUN_SOCKET__RELABELFROM, NULL);
+ if (err)
+ return err;
+ err = avc_has_perm(sid, sid, SECCLASS_TUN_SOCKET,
+ TUN_SOCKET__RELABELTO, NULL);
+ if (err)
+ return err;
+
+ sksec->sid = sid;
+
+ return 0;
+}
+
static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
{
int err = 0;
@@ -4353,7 +4438,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
int err;
char *addrp;
u32 peer_sid;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u8 secmark_active;
u8 netlbl_active;
u8 peerlbl_active;
@@ -4370,7 +4455,7 @@ static unsigned int selinux_ip_forward(struct sk_buff *skb, int ifindex,
if (selinux_skb_peerlbl_sid(skb, family, &peer_sid) != 0)
return NF_DROP;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.netif = ifindex;
ad.u.net.family = family;
if (selinux_parse_skb(skb, &ad, &addrp, 1, NULL) != 0)
@@ -4458,7 +4543,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
{
struct sock *sk = skb->sk;
struct sk_security_struct *sksec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
char *addrp;
u8 proto;
@@ -4466,7 +4551,7 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
return NF_ACCEPT;
sksec = sk->sk_security;
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.netif = ifindex;
ad.u.net.family = family;
if (selinux_parse_skb(skb, &ad, &addrp, 0, &proto))
@@ -4490,7 +4575,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
u32 secmark_perm;
u32 peer_sid;
struct sock *sk;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
char *addrp;
u8 secmark_active;
u8 peerlbl_active;
@@ -4549,7 +4634,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
secmark_perm = PACKET__SEND;
}
- AVC_AUDIT_DATA_INIT(&ad, NET);
+ COMMON_AUDIT_DATA_INIT(&ad, NET);
ad.u.net.netif = ifindex;
ad.u.net.family = family;
if (selinux_parse_skb(skb, &ad, &addrp, 0, NULL))
@@ -4610,22 +4695,19 @@ static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb)
if (err)
return err;
- if (policydb_loaded_version >= POLICYDB_VERSION_NLCLASS)
- err = selinux_nlmsg_perm(sk, skb);
-
- return err;
+ return selinux_nlmsg_perm(sk, skb);
}
static int selinux_netlink_recv(struct sk_buff *skb, int capability)
{
int err;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
err = cap_netlink_recv(skb, capability);
if (err)
return err;
- AVC_AUDIT_DATA_INIT(&ad, CAP);
+ COMMON_AUDIT_DATA_INIT(&ad, CAP);
ad.u.cap = capability;
return avc_has_perm(NETLINK_CB(skb).sid, NETLINK_CB(skb).sid,
@@ -4684,12 +4766,12 @@ static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
u32 perms)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
isec = ipc_perms->security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = ipc_perms->key;
return avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
@@ -4709,7 +4791,7 @@ static void selinux_msg_msg_free_security(struct msg_msg *msg)
static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
int rc;
@@ -4719,7 +4801,7 @@ static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
isec = msq->q_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = msq->q_perm.key;
rc = avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
@@ -4739,12 +4821,12 @@ static void selinux_msg_queue_free_security(struct msg_queue *msq)
static int selinux_msg_queue_associate(struct msg_queue *msq, int msqflg)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
isec = msq->q_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = msq->q_perm.key;
return avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
@@ -4783,7 +4865,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
{
struct ipc_security_struct *isec;
struct msg_security_struct *msec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
int rc;
@@ -4804,7 +4886,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
return rc;
}
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = msq->q_perm.key;
/* Can this process write to the queue? */
@@ -4828,14 +4910,14 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
{
struct ipc_security_struct *isec;
struct msg_security_struct *msec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = task_sid(target);
int rc;
isec = msq->q_perm.security;
msec = msg->security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = msq->q_perm.key;
rc = avc_has_perm(sid, isec->sid,
@@ -4850,7 +4932,7 @@ static int selinux_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
static int selinux_shm_alloc_security(struct shmid_kernel *shp)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
int rc;
@@ -4860,7 +4942,7 @@ static int selinux_shm_alloc_security(struct shmid_kernel *shp)
isec = shp->shm_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = shp->shm_perm.key;
rc = avc_has_perm(sid, isec->sid, SECCLASS_SHM,
@@ -4880,12 +4962,12 @@ static void selinux_shm_free_security(struct shmid_kernel *shp)
static int selinux_shm_associate(struct shmid_kernel *shp, int shmflg)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
isec = shp->shm_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = shp->shm_perm.key;
return avc_has_perm(sid, isec->sid, SECCLASS_SHM,
@@ -4942,7 +5024,7 @@ static int selinux_shm_shmat(struct shmid_kernel *shp,
static int selinux_sem_alloc_security(struct sem_array *sma)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
int rc;
@@ -4952,7 +5034,7 @@ static int selinux_sem_alloc_security(struct sem_array *sma)
isec = sma->sem_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = sma->sem_perm.key;
rc = avc_has_perm(sid, isec->sid, SECCLASS_SEM,
@@ -4972,12 +5054,12 @@ static void selinux_sem_free_security(struct sem_array *sma)
static int selinux_sem_associate(struct sem_array *sma, int semflg)
{
struct ipc_security_struct *isec;
- struct avc_audit_data ad;
+ struct common_audit_data ad;
u32 sid = current_sid();
isec = sma->sem_perm.security;
- AVC_AUDIT_DATA_INIT(&ad, IPC);
+ COMMON_AUDIT_DATA_INIT(&ad, IPC);
ad.u.ipc_id = sma->sem_perm.key;
return avc_has_perm(sid, isec->sid, SECCLASS_SEM,
@@ -5195,7 +5277,7 @@ static int selinux_setprocattr(struct task_struct *p,
/* Only allow single threaded processes to change context */
error = -EPERM;
- if (!is_single_threaded(p)) {
+ if (!current_is_single_threaded()) {
error = security_bounded_transition(tsec->sid, sid);
if (error)
goto abort_change;
@@ -5252,6 +5334,32 @@ static void selinux_release_secctx(char *secdata, u32 seclen)
kfree(secdata);
}
+/*
+ * called with inode->i_mutex locked
+ */
+static int selinux_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
+{
+ return selinux_inode_setsecurity(inode, XATTR_SELINUX_SUFFIX, ctx, ctxlen, 0);
+}
+
+/*
+ * called with inode->i_mutex locked
+ */
+static int selinux_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
+{
+ return __vfs_setxattr_noperm(dentry, XATTR_NAME_SELINUX, ctx, ctxlen, 0);
+}
+
+static int selinux_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
+{
+ int len = 0;
+ len = selinux_inode_getsecurity(inode, XATTR_SELINUX_SUFFIX,
+ ctx, true);
+ if (len < 0)
+ return len;
+ *ctxlen = len;
+ return 0;
+}
#ifdef CONFIG_KEYS
static int selinux_key_alloc(struct key *k, const struct cred *cred,
@@ -5323,7 +5431,7 @@ static int selinux_key_getsecurity(struct key *key, char **_buffer)
static struct security_operations selinux_ops = {
.name = "selinux",
- .ptrace_may_access = selinux_ptrace_may_access,
+ .ptrace_access_check = selinux_ptrace_access_check,
.ptrace_traceme = selinux_ptrace_traceme,
.capget = selinux_capget,
.capset = selinux_capset,
@@ -5396,10 +5504,13 @@ static struct security_operations selinux_ops = {
.dentry_open = selinux_dentry_open,
.task_create = selinux_task_create,
+ .cred_alloc_blank = selinux_cred_alloc_blank,
.cred_free = selinux_cred_free,
.cred_prepare = selinux_cred_prepare,
+ .cred_transfer = selinux_cred_transfer,
.kernel_act_as = selinux_kernel_act_as,
.kernel_create_files_as = selinux_kernel_create_files_as,
+ .kernel_module_request = selinux_kernel_module_request,
.task_setpgid = selinux_task_setpgid,
.task_getpgid = selinux_task_getpgid,
.task_getsid = selinux_task_getsid,
@@ -5448,6 +5559,9 @@ static struct security_operations selinux_ops = {
.secid_to_secctx = selinux_secid_to_secctx,
.secctx_to_secid = selinux_secctx_to_secid,
.release_secctx = selinux_release_secctx,
+ .inode_notifysecctx = selinux_inode_notifysecctx,
+ .inode_setsecctx = selinux_inode_setsecctx,
+ .inode_getsecctx = selinux_inode_getsecctx,
.unix_stream_connect = selinux_socket_unix_stream_connect,
.unix_may_send = selinux_socket_unix_may_send,
@@ -5477,6 +5591,9 @@ static struct security_operations selinux_ops = {
.inet_csk_clone = selinux_inet_csk_clone,
.inet_conn_established = selinux_inet_conn_established,
.req_classify_flow = selinux_req_classify_flow,
+ .tun_dev_create = selinux_tun_dev_create,
+ .tun_dev_post_create = selinux_tun_dev_post_create,
+ .tun_dev_attach = selinux_tun_dev_attach,
#ifdef CONFIG_SECURITY_NETWORK_XFRM
.xfrm_policy_alloc_security = selinux_xfrm_policy_alloc,
@@ -5523,14 +5640,13 @@ static __init int selinux_init(void)
/* Set the security state for the initial task. */
cred_init_security();
+ default_noexec = !(VM_DATA_DEFAULT_FLAGS & VM_EXEC);
+
sel_inode_cache = kmem_cache_create("selinux_inode_security",
sizeof(struct inode_security_struct),
0, SLAB_PANIC, NULL);
avc_init();
- secondary_ops = security_ops;
- if (!secondary_ops)
- panic("SELinux: No initial security operations\n");
if (register_security(&selinux_ops))
panic("SELinux: Unable to register with kernel.\n");
@@ -5542,35 +5658,18 @@ static __init int selinux_init(void)
return 0;
}
+static void delayed_superblock_init(struct super_block *sb, void *unused)
+{
+ superblock_doinit(sb, NULL);
+}
+
void selinux_complete_init(void)
{
printk(KERN_DEBUG "SELinux: Completing initialization.\n");
/* Set up any superblocks initialized prior to the policy load. */
printk(KERN_DEBUG "SELinux: Setting up existing superblocks.\n");
- spin_lock(&sb_lock);
- spin_lock(&sb_security_lock);
-next_sb:
- if (!list_empty(&superblock_security_head)) {
- struct superblock_security_struct *sbsec =
- list_entry(superblock_security_head.next,
- struct superblock_security_struct,
- list);
- struct super_block *sb = sbsec->sb;
- sb->s_count++;
- spin_unlock(&sb_security_lock);
- spin_unlock(&sb_lock);
- down_read(&sb->s_umount);
- if (sb->s_root)
- superblock_doinit(sb, NULL);
- drop_super(sb);
- spin_lock(&sb_lock);
- spin_lock(&sb_security_lock);
- list_del_init(&sbsec->list);
- goto next_sb;
- }
- spin_unlock(&sb_security_lock);
- spin_unlock(&sb_lock);
+ iterate_supers(delayed_superblock_init, NULL);
}
/* SELinux requires early initialization in order to label
@@ -5691,8 +5790,10 @@ int selinux_disable(void)
selinux_disabled = 1;
selinux_enabled = 0;
- /* Reset security_ops to the secondary module, dummy or capability. */
- security_ops = secondary_ops;
+ reset_security_ops();
+
+ /* Try to destroy the avc node cache */
+ avc_disable();
/* Unregister netfilter hooks. */
selinux_nf_ip_exit();
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-12 17:32:28 +0000