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Commit 456f5fd3 authored Oct 01, 2014 by Dmitry Kasatkin Committed by Mimi Zohar Oct 07, 2014

ima: use path names cache



__getname() uses slab allocation which is faster than kmalloc.
Make use of it.

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>

parent c2baec7f

security/integrity/ima/ima_api.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -325,11 +325,11 @@ const char ima_d_path(struct path path, char **pathbuf)
		{
		char *pathname = NULL;

		*pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
		*pathbuf = __getname();
		if (*pathbuf) {
		pathname = d_absolute_path(path, *pathbuf, PATH_MAX);
		if (IS_ERR(pathname)) {
		kfree(*pathbuf);
		__putname(*pathbuf);
		*pathbuf = NULL;
		pathname = NULL;
		}

security/integrity/ima/ima_main.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -246,7 +246,8 @@ static int process_measurement(struct file *file, int mask, int function,
		rc = -EACCES;
		kfree(xattr_value);
		out_free:
		kfree(pathbuf);
		if (pathbuf)
		__putname(pathbuf);
		out:
		mutex_unlock(&inode->i_mutex);
		if ((rc && must_appraise) && (ima_appraise & IMA_APPRAISE_ENFORCE))