diff options
Diffstat (limited to 'toys/lsb/hostname.c')
| -rw-r--r-- | toys/lsb/hostname.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/toys/lsb/hostname.c b/toys/lsb/hostname.c index c9fafa54..ac7f9163 100644 --- a/toys/lsb/hostname.c +++ b/toys/lsb/hostname.c @@ -10,7 +10,7 @@ config HOSTNAME bool "hostname" default y help - usage: hostname [-bsf] [-F FILENAME] [newname] + usage: hostname [-bdsf] [-F FILENAME] [newname] Get/set the current hostname. @@ -36,13 +36,13 @@ void hostname_main(void) if (TT.F && (hostname = xreadfile(TT.F, 0, 0))) { if (!*chomp(hostname)) { if (CFG_TOYBOX_FREE) free(hostname); - if (!(toys.optflags&FLAG_b)) error_exit("empty '%s'", TT.F); + if (!FLAG(b)) error_exit("empty '%s'", TT.F); hostname = 0; } } // Implement -b. - if (!hostname && (toys.optflags&FLAG_b)) + if (!hostname && FLAG(b)) if (gethostname(toybuf, sizeof(toybuf)-1) || !*toybuf) hostname = "localhost"; @@ -55,9 +55,12 @@ void hostname_main(void) // Get the hostname. if (gethostname(toybuf, sizeof(toybuf)-1)) perror_exit("gethostname"); - if (!(h = gethostbyname(toybuf))) perror_exit("gethostbyname"); - snprintf(toybuf, sizeof(toybuf), "%s", h->h_name); + // We only do the DNS lookup for -d and -f. + if (FLAG(d) || FLAG(f)) { + if (!(h = gethostbyname(toybuf))) perror_exit("gethostbyname"); + snprintf(toybuf, sizeof(toybuf), "%s", h->h_name); + } dot = strchr(toybuf, '.'); - if (toys.optflags&FLAG_s) *dot = '\0'; - xputs(toys.optflags&FLAG_d ? dot+1 : toybuf); + if (FLAG(s) && dot) *dot = '\0'; + xputs(FLAG(d) ? dot+1 : toybuf); } |