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| author | David du Colombier <0intro@gmail.com> | 2011-11-21 08:40:17 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@swtch.com> | 2011-11-21 08:40:17 -0500 |
| commit | 38bcdc42b52c539273848f734421e13b2bd2a50a (patch) | |
| tree | 6142c7b546c10b1b99091bc0934a97cac0f99d66 /src/cmd/upas | |
| parent | 81c30b5a75cb5ae9a5175321a5f8a6049f0ac4e3 (diff) | |
| download | plan9port-38bcdc42b52c539273848f734421e13b2bd2a50a.tar.gz plan9port-38bcdc42b52c539273848f734421e13b2bd2a50a.tar.bz2 plan9port-38bcdc42b52c539273848f734421e13b2bd2a50a.zip | |
upas: fix segfault when host not found
R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/5370105
Diffstat (limited to 'src/cmd/upas')
| -rw-r--r-- | src/cmd/upas/common/libsys.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/cmd/upas/common/libsys.c b/src/cmd/upas/common/libsys.c index 8e55fc4d..b439cfde 100644 --- a/src/cmd/upas/common/libsys.c +++ b/src/cmd/upas/common/libsys.c @@ -465,6 +465,9 @@ sysnames_read(void) return namev; h = gethostbyname(alt_sysname_read()); + if(h == nil) + return 0; + for(p=h->h_aliases; *p; p++) ; @@ -491,7 +494,7 @@ domainname_read(void) char **namev, *p; Ndbtuple *t; - for(namev = sysnames_read(); *namev; namev++){ + for(namev = sysnames_read(); namev && *namev; namev++){ if(strchr(*namev, '.')){ for(p=*namev-1; p && *++p; p=strchr(p, '.')){ if((t = dnsquery(nil, p, "mx")) != nil){ |