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fix if_nametoindex return value when socket open fails

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The return value of if_nametoindex is unsigned; it should return 0
on error.
This commit is contained in:
Ron Yorston 2016-01-15 09:39:44 +00:00 committed by Rich Felker
parent 2f853dd6b9
commit 3cdbfb99c3
1 changed files with 1 additions and 1 deletions
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2
src/network/if_nametoindex.c
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@ -10,7 +10,7 @@ unsigned if_nametoindex(const char *name)
struct ifreq ifr;
int fd, r;
if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return -1;
if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return 0;
strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
r = ioctl(fd, SIOCGIFINDEX, &ifr);
__syscall(SYS_close, fd);