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audit: allow interfield comparison between gid and ogid

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Allow audit rules to compare the gid of the running task to the gid of the
inode in question.

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2012-01-03 14:23:08 -05:00 • committed by Al Viro
parent b34b039324
commit c9fe685f7a
2 changed files with 8 additions and 1 deletions
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6
kernel/auditsc.c
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@ -474,6 +474,8 @@ static int audit_compare_id(uid_t uid1,
uid_t uid2;
int rc;
BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
if (name) {
addr = (unsigned long)name;
addr += name_offset;
@ -510,6 +512,10 @@ static int audit_field_compare(struct task_struct *tsk,
return audit_compare_id(cred->uid,
name, offsetof(struct audit_names, uid),
f, ctx);
case AUDIT_COMPARE_GID_TO_OBJ_GID:
return audit_compare_id(cred->gid,
name, offsetof(struct audit_names, gid),
f, ctx);
default:
WARN(1, "Missing AUDIT_COMPARE define. Report as a bug\n");
return 0;