aboutsummaryrefslogtreecommitdiff
path: root/toys/lsb
diff options
context:
space:
mode:
Diffstat (limited to 'toys/lsb')
-rw-r--r--toys/lsb/hostname.c17
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);
}