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authorMimi Zohar <zohar@linux.vnet.ibm.com>2016-01-31 06:23:26 +0300
committerMimi Zohar <zohar@linux.vnet.ibm.com>2016-02-21 17:06:09 +0300
commit39eeb4fb97f60dbdfc823c1a673a8844b9226b60 (patch)
tree46e37e2211017237abd363a0dd1b3737da741ed0 /include/linux/lsm_hooks.h
parente40ba6d56b41754b37b995dbc8035b2b3a6afd8a (diff)
downloadlinux-39eeb4fb97f60dbdfc823c1a673a8844b9226b60.tar.xz
security: define kernel_read_file hook
The kernel_read_file security hook is called prior to reading the file into memory. Changelog v4+: - export security_kernel_read_file() Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Luis R. Rodriguez <mcgrof@kernel.org> Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'include/linux/lsm_hooks.h')
-rw-r--r--include/linux/lsm_hooks.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 7d04a1220223..d32b7bd13635 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -552,6 +552,12 @@
* the kernel module to load. If the module is being loaded from a blob,
* this argument will be NULL.
* Return 0 if permission is granted.
+ * @kernel_read_file:
+ * Read a file specified by userspace.
+ * @file contains the file structure pointing to the file being read
+ * by the kernel.
+ * @id kernel read file identifier
+ * Return 0 if permission is granted.
* @kernel_post_read_file:
* Read a file specified by userspace.
* @file contains the file structure pointing to the file being read
@@ -1455,6 +1461,7 @@ union security_list_options {
int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
int (*kernel_module_request)(char *kmod_name);
int (*kernel_module_from_file)(struct file *file);
+ int (*kernel_read_file)(struct file *file, enum kernel_read_file_id id);
int (*kernel_post_read_file)(struct file *file, char *buf, loff_t size,
enum kernel_read_file_id id);
int (*task_fix_setuid)(struct cred *new, const struct cred *old,
@@ -1715,6 +1722,7 @@ struct security_hook_heads {
struct list_head cred_transfer;
struct list_head kernel_act_as;
struct list_head kernel_create_files_as;
+ struct list_head kernel_read_file;
struct list_head kernel_post_read_file;
struct list_head kernel_module_request;
struct list_head kernel_module_from_file;