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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 15:32:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 15:32:38 -0800
commit1873499e13648a2dd01a394ed3217c9290921b3d (patch)
tree3a662aadb3c02bbce2e9231a90da6e98b54d33d4 /security/selinux/hooks.c
parent3460b01b12aaf0011cb30f6f502edd05752f70eb (diff)
parentba94c3ff20c9c179f2a80f0e4c71e1571ebbf5c7 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem update from James Morris: "This is mostly maintenance updates across the subsystem, with a notable update for TPM 2.0, and addition of Jarkko Sakkinen as a maintainer of that" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (40 commits) apparmor: clarify CRYPTO dependency selinux: Use a kmem_cache for allocation struct file_security_struct selinux: ioctl_has_perm should be static selinux: use sprintf return value selinux: use kstrdup() in security_get_bools() selinux: use kmemdup in security_sid_to_context_core() selinux: remove pointless cast in selinux_inode_setsecurity() selinux: introduce security_context_str_to_sid selinux: do not check open perm on ftruncate call selinux: change CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE default KEYS: Merge the type-specific data with the payload data KEYS: Provide a script to extract a module signature KEYS: Provide a script to extract the sys cert list from a vmlinux file keys: Be more consistent in selection of union members used certs: add .gitignore to stop git nagging about x509_certificate_list KEYS: use kvfree() in add_key Smack: limited capability for changing process label TPM: remove unnecessary little endian conversion vTPM: support little endian guests char: Drop owner assignment from i2c_driver ...
Diffstat (limited to 'security/selinux/hooks.c')
-rw-r--r--security/selinux/hooks.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 26f4039d54b8..9e591e5989be 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -126,6 +126,7 @@ int selinux_enabled = 1;
#endif
static struct kmem_cache *sel_inode_cache;
+static struct kmem_cache *file_security_cache;
/**
* selinux_secmark_enabled - Check to see if SECMARK is currently enabled
@@ -287,7 +288,7 @@ static int file_alloc_security(struct file *file)
struct file_security_struct *fsec;
u32 sid = current_sid();
- fsec = kzalloc(sizeof(struct file_security_struct), GFP_KERNEL);
+ fsec = kmem_cache_zalloc(file_security_cache, GFP_KERNEL);
if (!fsec)
return -ENOMEM;
@@ -302,7 +303,7 @@ static void file_free_security(struct file *file)
{
struct file_security_struct *fsec = file->f_security;
file->f_security = NULL;
- kfree(fsec);
+ kmem_cache_free(file_security_cache, fsec);
}
static int superblock_alloc_security(struct super_block *sb)
@@ -674,10 +675,9 @@ static int selinux_set_mnt_opts(struct super_block *sb,
if (flags[i] == SBLABEL_MNT)
continue;
- rc = security_context_to_sid(mount_options[i],
- strlen(mount_options[i]), &sid, GFP_KERNEL);
+ rc = security_context_str_to_sid(mount_options[i], &sid, GFP_KERNEL);
if (rc) {
- printk(KERN_WARNING "SELinux: security_context_to_sid"
+ printk(KERN_WARNING "SELinux: security_context_str_to_sid"
"(%s) failed for (dev %s, type %s) errno=%d\n",
mount_options[i], sb->s_id, name, rc);
goto out;
@@ -2617,15 +2617,12 @@ static int selinux_sb_remount(struct super_block *sb, void *data)
for (i = 0; i < opts.num_mnt_opts; i++) {
u32 sid;
- size_t len;
if (flags[i] == SBLABEL_MNT)
continue;
- len = strlen(mount_options[i]);
- rc = security_context_to_sid(mount_options[i], len, &sid,
- GFP_KERNEL);
+ rc = security_context_str_to_sid(mount_options[i], &sid, GFP_KERNEL);
if (rc) {
- printk(KERN_WARNING "SELinux: security_context_to_sid"
+ printk(KERN_WARNING "SELinux: security_context_str_to_sid"
"(%s) failed for (dev %s, type %s) errno=%d\n",
mount_options[i], sb->s_id, sb->s_type->name, rc);
goto out_free_opts;
@@ -2946,7 +2943,8 @@ static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET))
return dentry_has_perm(cred, dentry, FILE__SETATTR);
- if (selinux_policycap_openperm && (ia_valid & ATTR_SIZE))
+ if (selinux_policycap_openperm && (ia_valid & ATTR_SIZE)
+ && !(ia_valid & ATTR_FILE))
av |= FILE__OPEN;
return dentry_has_perm(cred, dentry, av);
@@ -3166,7 +3164,7 @@ static int selinux_inode_setsecurity(struct inode *inode, const char *name,
if (!value || !size)
return -EACCES;
- rc = security_context_to_sid((void *)value, size, &newsid, GFP_KERNEL);
+ rc = security_context_to_sid(value, size, &newsid, GFP_KERNEL);
if (rc)
return rc;
@@ -3238,7 +3236,7 @@ static void selinux_file_free_security(struct file *file)
* Check whether a task has the ioctl permission and cmd
* operation to an inode.
*/
-int ioctl_has_perm(const struct cred *cred, struct file *file,
+static int ioctl_has_perm(const struct cred *cred, struct file *file,
u32 requested, u16 cmd)
{
struct common_audit_data ad;
@@ -6093,6 +6091,9 @@ static __init int selinux_init(void)
sel_inode_cache = kmem_cache_create("selinux_inode_security",
sizeof(struct inode_security_struct),
0, SLAB_PANIC, NULL);
+ file_security_cache = kmem_cache_create("selinux_file_security",
+ sizeof(struct file_security_struct),
+ 0, SLAB_PANIC, NULL);
avc_init();
security_add_hooks(selinux_hooks, ARRAY_SIZE(selinux_hooks));