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IMA: handle comments in policy 

IMA policy load parser will reject any policies with a comment.  This patch
will allow the parser to just ignore lines which start with a #.  This is not
very robust.  # can ONLY be used at the very beginning of a line.  Inline
comments are not allowed.

Signed-off-by: Eric Paris
Acked-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Eric Paris 2010-04-20 10:21:24 -04:00 committed by James Morris
parent 28ef4002ec
commit 7233e3ee22
1 changed files with 14 additions and 7 deletions
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21
security/integrity/ima/ima_policy.c
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@ -445,19 +445,26 @@ ssize_t ima_parse_add_rule(char *rule)
p = strsep(&rule, "\n");
len = strlen(p) + 1;
if (*p == '#') {
kfree(entry);
return len;
}
result = ima_parse_rule(p, entry);
if (!result) {
result = len;
mutex_lock(&ima_measure_mutex);
list_add_tail(&entry->list, &measure_policy_rules);
mutex_unlock(&ima_measure_mutex);
} else {
if (result) {
kfree(entry);
integrity_audit_msg(AUDIT_INTEGRITY_STATUS, NULL,
NULL, op, "invalid policy", result,
audit_info);
}
return result;
}
mutex_lock(&ima_measure_mutex);
list_add_tail(&entry->list, &measure_policy_rules);
mutex_unlock(&ima_measure_mutex);
return len;
}
/* ima_delete_rules called to cleanup invalid policy */