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hostname: don't override the hostname with localhost if it is already set and /etc/hostname unset

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This commit is contained in:
Lennart Poettering 2011-03-14 18:05:52 +01:00
parent 391ade8606
commit 9bec0b1e8d
1 changed files with 21 additions and 1 deletions
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22
src/hostname-setup.c
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@ -174,16 +174,36 @@ int hostname_setup(void) {
else else
log_warning("Failed to read configured hostname: %s", strerror(-r)); log_warning("Failed to read configured hostname: %s", strerror(-r));
hn = "localhost"; hn = NULL;
} else } else
hn = b; hn = b;
if (!hn) {
/* Don't override the hostname if it is unset and not
* explicitly configured */
char *old_hostname = NULL;
if ((old_hostname = gethostname_malloc())) {
bool already_set;
already_set = old_hostname[0] != 0;
free(old_hostname);
if (already_set)
goto finish;
}
hn = "localhost";
}
if (sethostname(hn, strlen(hn)) < 0) { if (sethostname(hn, strlen(hn)) < 0) {
log_warning("Failed to set hostname to <%s>: %m", hn); log_warning("Failed to set hostname to <%s>: %m", hn);
r = -errno; r = -errno;
} else } else
log_info("Set hostname to <%s>.", hn); log_info("Set hostname to <%s>.", hn);
finish:
free(b); free(b);
return r; return r;