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authorMimi Zohar <zohar@linux.vnet.ibm.com>2009-10-22 17:30:13 -0400
committerJames Morris <jmorris@namei.org>2009-10-25 12:22:48 +0800
commit6c21a7fb492bf7e2c4985937082ce58ddeca84bd (patch)
tree6cfe11ba4b8eee26ee8b02d2b4a5fcc6ea07e4bd
parent6e8e16c7bc298d7887584c3d027e05db3e86eed9 (diff)
downloadop-kernel-dev-6c21a7fb492bf7e2c4985937082ce58ddeca84bd.zip
op-kernel-dev-6c21a7fb492bf7e2c4985937082ce58ddeca84bd.tar.gz
LSM: imbed ima calls in the security hooks
Based on discussions on LKML and LSM, where there are consecutive security_ and ima_ calls in the vfs layer, move the ima_ calls to the existing security_ hooks. Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
-rw-r--r--fs/exec.c4
-rw-r--r--fs/file_table.c2
-rw-r--r--fs/inode.c10
-rw-r--r--mm/mmap.c4
-rw-r--r--security/integrity/ima/Kconfig1
-rw-r--r--security/security.c28
6 files changed, 26 insertions, 23 deletions
diff --git a/fs/exec.c b/fs/exec.c
index d49be6b..d164342 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -46,7 +46,6 @@
#include <linux/proc_fs.h>
#include <linux/mount.h>
#include <linux/security.h>
-#include <linux/ima.h>
#include <linux/syscalls.h>
#include <linux/tsacct_kern.h>
#include <linux/cn_proc.h>
@@ -1211,9 +1210,6 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
retval = security_bprm_check(bprm);
if (retval)
return retval;
- retval = ima_bprm_check(bprm);
- if (retval)
- return retval;
/* kernel module loader fixup */
/* so we don't try to load run modprobe in kernel space. */
diff --git a/fs/file_table.c b/fs/file_table.c
index 8eb4404..4bef4c0 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -13,7 +13,6 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/security.h>
-#include <linux/ima.h>
#include <linux/eventpoll.h>
#include <linux/rcupdate.h>
#include <linux/mount.h>
@@ -280,7 +279,6 @@ void __fput(struct file *file)
if (file->f_op && file->f_op->release)
file->f_op->release(inode, file);
security_file_free(file);
- ima_file_free(file);
if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL))
cdev_put(inode->i_cdev);
fops_put(file->f_op);
diff --git a/fs/inode.c b/fs/inode.c
index 4d8e3be..06c1f02 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -18,7 +18,6 @@
#include <linux/hash.h>
#include <linux/swap.h>
#include <linux/security.h>
-#include <linux/ima.h>
#include <linux/pagemap.h>
#include <linux/cdev.h>
#include <linux/bootmem.h>
@@ -157,11 +156,6 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
if (security_inode_alloc(inode))
goto out;
-
- /* allocate and initialize an i_integrity */
- if (ima_inode_alloc(inode))
- goto out_free_security;
-
spin_lock_init(&inode->i_lock);
lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key);
@@ -201,9 +195,6 @@ int inode_init_always(struct super_block *sb, struct inode *inode)
#endif
return 0;
-
-out_free_security:
- security_inode_free(inode);
out:
return -ENOMEM;
}
@@ -235,7 +226,6 @@ static struct inode *alloc_inode(struct super_block *sb)
void __destroy_inode(struct inode *inode)
{
BUG_ON(inode_has_buffers(inode));
- ima_inode_free(inode);
security_inode_free(inode);
fsnotify_inode_delete(inode);
#ifdef CONFIG_FS_POSIX_ACL
diff --git a/mm/mmap.c b/mm/mmap.c
index 73f5e4b..292ddc3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -20,7 +20,6 @@
#include <linux/fs.h>
#include <linux/personality.h>
#include <linux/security.h>
-#include <linux/ima.h>
#include <linux/hugetlb.h>
#include <linux/profile.h>
#include <linux/module.h>
@@ -1061,9 +1060,6 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
error = security_file_mmap(file, reqprot, prot, flags, addr, 0);
if (error)
return error;
- error = ima_file_mmap(file, prot);
- if (error)
- return error;
return mmap_region(file, addr, len, flags, vm_flags, pgoff);
}
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 53d9764..3d7846d 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -3,6 +3,7 @@
config IMA
bool "Integrity Measurement Architecture(IMA)"
depends on ACPI
+ depends on SECURITY
select SECURITYFS
select CRYPTO
select CRYPTO_HMAC
diff --git a/security/security.c b/security/security.c
index 2797573..684d5ee 100644
--- a/security/security.c
+++ b/security/security.c
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/security.h>
+#include <linux/ima.h>
/* Boot-time LSM user choice */
static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1];
@@ -235,7 +236,12 @@ int security_bprm_set_creds(struct linux_binprm *bprm)
int security_bprm_check(struct linux_binprm *bprm)
{
- return security_ops->bprm_check_security(bprm);
+ int ret;
+
+ ret = security_ops->bprm_check_security(bprm);
+ if (ret)
+ return ret;
+ return ima_bprm_check(bprm);
}
void security_bprm_committing_creds(struct linux_binprm *bprm)
@@ -352,12 +358,21 @@ EXPORT_SYMBOL(security_sb_parse_opts_str);
int security_inode_alloc(struct inode *inode)
{
+ int ret;
+
inode->i_security = NULL;
- return security_ops->inode_alloc_security(inode);
+ ret = security_ops->inode_alloc_security(inode);
+ if (ret)
+ return ret;
+ ret = ima_inode_alloc(inode);
+ if (ret)
+ security_inode_free(inode);
+ return ret;
}
void security_inode_free(struct inode *inode)
{
+ ima_inode_free(inode);
security_ops->inode_free_security(inode);
}
@@ -648,6 +663,8 @@ int security_file_alloc(struct file *file)
void security_file_free(struct file *file)
{
security_ops->file_free_security(file);
+ if (file->f_dentry)
+ ima_file_free(file);
}
int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
@@ -659,7 +676,12 @@ int security_file_mmap(struct file *file, unsigned long reqprot,
unsigned long prot, unsigned long flags,
unsigned long addr, unsigned long addr_only)
{
- return security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
+ int ret;
+
+ ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
+ if (ret)
+ return ret;
+ return ima_file_mmap(file, prot);
}
int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
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