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audit: optimize audit_compare_dname_path

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In the cases where we already know the length of the parent, pass it as
a parm so we don't need to recompute it. In the cases where we don't
know the length, pass in AUDIT_NAME_FULL (-1) to indicate that it should
be determined.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jeff Layton 2012-10-10 15:25:25 -04:00 • committed by Al Viro
parent 29e9a3467c
commit e3d6b07b8b
4 changed files with 20 additions and 12 deletions
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8
kernel/auditsc.c
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@ -81,9 +81,6 @@
* a name dynamically and also add those to the list anchored by names_list. */
#define AUDIT_NAMES 5
/* Indicates that audit should log the full pathname. */
#define AUDIT_NAME_FULL -1
/* no execve audit message should be longer than this (userspace limits) */
#define MAX_EXECVE_AUDIT_LEN 7500
@ -2222,7 +2219,7 @@ void __audit_inode_child(const struct inode *parent,
continue;
if (n->ino == parent->i_ino &&
!audit_compare_dname_path(dname, n->name)) {
!audit_compare_dname_path(dname, n->name, n->name_len)) {
found_parent = n->name;
goto add_names;
}
@ -2235,7 +2232,8 @@ void __audit_inode_child(const struct inode *parent,
/* strcmp() is the more likely scenario */
if (!strcmp(dname, n->name) ||
!audit_compare_dname_path(dname, n->name)) {
!audit_compare_dname_path(dname, n->name,
AUDIT_NAME_FULL)) {
if (inode)
audit_copy_inode(n, dentry, inode);
else