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| author | Jim Meyering <jim@meyering.net> | 1996-11-21 02:38:40 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 1996-11-21 02:38:40 +0000 |
| commit | fc949b713ed9f5c112ac98eeaf209641051d0987 (patch) | |
| tree | 623bb69a079ea9e0eb78af8bf538e1f369838b3d /lib/xgethostname.c | |
| parent | fbc246ca8f593f504bb65645f4a04926f0be0959 (diff) | |
| download | coreutils-fc949b713ed9f5c112ac98eeaf209641051d0987.tar.xz | |
(xgethostname): Work around bug in SunOS5.5's gethostname.
Diffstat (limited to 'lib/xgethostname.c')
| -rw-r--r-- | lib/xgethostname.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/xgethostname.c b/lib/xgethostname.c index 7038ea42c..79da0ec9c 100644 --- a/lib/xgethostname.c +++ b/lib/xgethostname.c @@ -39,7 +39,7 @@ char *xmalloc (); char *xrealloc (); #ifndef INITIAL_HOSTNAME_LENGTH -# define INITIAL_HOSTNAME_LENGTH 33 +# define INITIAL_HOSTNAME_LENGTH 34 #endif char * @@ -53,10 +53,15 @@ xgethostname () hostname = xmalloc (size); while (1) { + /* Use size - 2 here rather than size - 1 to work around the bug + in SunOS5.5's gethostname whereby it NUL-terminates HOSTNAME + even when the name is longer than the supplied buffer. */ + int k = size - 2; + errno = 0; - hostname[size - 1] = '\0'; + hostname[k] = '\0'; err = gethostname (hostname, size); - if (err == 0 && hostname[size - 1] == '\0') + if (err == 0 && hostname[k] == '\0') break; #ifdef ENAMETOOLONG else if (err != 0 && errno != ENAMETOOLONG && errno != 0) |