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- Correct logic in if statement - we want to allocate temporary buffer

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when someone is passing new rules, not when he only want to read them.
  Because of this bug, even if the given rules were incorrect, they
  ended up in rule_string.
- Add missing protection for rule_string when coping it.

Reviewed by:	rwatson
MFC after:	1 week
This commit is contained in:
Pawel Jakub Dawidek 2009-03-14 20:40:06 +00:00
parent b3c11b5b91
commit a3ce3b6d35
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=189830
1 changed files with 3 additions and 1 deletions
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4
sys/security/mac_portacl/mac_portacl.c
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@ -341,10 +341,12 @@ sysctl_rules(SYSCTL_HANDLER_ARGS)
int error;
new_string = NULL;
if (req->newptr == NULL) {
if (req->newptr != NULL) {
new_string = malloc(MAC_RULE_STRING_LEN, M_PORTACL,
M_WAITOK | M_ZERO);
mtx_lock(&rule_mtx);
strcpy(new_string, rule_string);
mtx_unlock(&rule_mtx);
string = new_string;
} else
string = rule_string;