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| author | rik <rik@FreeBSD.org> | 2008-09-20 15:54:22 +0000 |
|---|---|---|
| committer | rik <rik@FreeBSD.org> | 2008-09-20 15:54:22 +0000 |
| commit | a32f707733c85820ecb4ee9dec2f248c602b2e34 (patch) | |
| tree | e5d4e0e0369984e4b2876c070143ddf0f1a21411 /sbin | |
| parent | 01d93d1030cce6c841e0878939c15f8dfd897e0e (diff) | |
| download | FreeBSD-src-a32f707733c85820ecb4ee9dec2f248c602b2e34.zip FreeBSD-src-a32f707733c85820ecb4ee9dec2f248c602b2e34.tar.gz | |
Do not do the useless job for an empty table.
MFC after: 1 month
Diffstat (limited to 'sbin')
| -rw-r--r-- | sbin/ipfw/ipfw2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sbin/ipfw/ipfw2.c b/sbin/ipfw/ipfw2.c index 78d758f..fb13886 100644 --- a/sbin/ipfw/ipfw2.c +++ b/sbin/ipfw/ipfw2.c @@ -5937,6 +5937,11 @@ table_handler(int ac, char *av[]) l = sizeof(a); if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); + + /* If a is zero we have nothing to do, the table is empty. */ + if (a == 0) + return; + l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); tbl = malloc(l); if (tbl == NULL) |
