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ip: fix igmp parsing when iface is long

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Entries with long vhost names in /proc/net/igmp have no whitespace
between name and colon, so sscanf() adds it to vhost and
'ip maddr show iface' doesn't include inet result.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
This commit is contained in:
Petr Vorel 2017-01-17 00:25:50 +01:00 committed by Stephen Hemminger
parent a05b9557f4
commit 530903dd90
1 changed files with 5 additions and 1 deletions
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6
ip/ipmaddr.c
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@ -136,13 +136,17 @@ static void read_igmp(struct ma_info **result_p)
while (fgets(buf, sizeof(buf), fp)) {
struct ma_info *ma;
size_t len;
if (buf[0] != '\t') {
sscanf(buf, "%d%s", &m.index, m.name);
len = strlen(m.name);
if (m.name[len - 1] == ':')
len--;
continue;
}
if (filter.dev && strcmp(filter.dev, m.name))
if (filter.dev && strncmp(filter.dev, m.name, len))
continue;
sscanf(buf, "%08x%d", (__u32 *)&m.addr.data, &m.users);