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authorMimi Zohar <zohar@linux.vnet.ibm.com>2018-07-13 20:05:56 +0200
committerJames Morris <james.morris@microsoft.com>2018-07-16 21:31:57 +0200
commit377179cd28cd417dcfb4396edb824533431e607e (patch)
tree65c6670521648ce4a307cae400786f442952c532 /security
parentMerge tag 'v4.18-rc2' into next-general (diff)
downloadlinux-377179cd28cd417dcfb4396edb824533431e607e.tar.xz
linux-377179cd28cd417dcfb4396edb824533431e607e.zip
security: define new LSM hook named security_kernel_load_data
Differentiate between the kernel reading a file specified by userspace from the kernel loading a buffer containing data provided by userspace. This patch defines a new LSM hook named security_kernel_load_data(). Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Luis R. Rodriguez <mcgrof@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Casey Schaufler <casey@schaufler-ca.com> Acked-by: Serge Hallyn <serge@hallyn.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'security')
-rw-r--r--security/security.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c
index 68f46d849abe..c2de2f134854 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1056,6 +1056,11 @@ int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
}
EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
+int security_kernel_load_data(enum kernel_load_data_id id)
+{
+ return call_int_hook(kernel_load_data, 0, id);
+}
+
int security_task_fix_setuid(struct cred *new, const struct cred *old,
int flags)
{