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Better error messages when using -L, -R or -U on platforms that do not support it.

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This commit is contained in:
Guus Sliepen 2013-01-14 13:01:47 +01:00
parent cad86108f3
commit 50e1790101
1 changed files with 15 additions and 10 deletions
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23
src/tincd.c
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@ -127,13 +127,18 @@ static void usage(bool status) {
" -D, --no-detach Don't fork and detach.\n"
" -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n"
" -n, --net=NETNAME Connect to net NETNAME.\n"
#ifdef HAVE_MLOCKALL
" -L, --mlock Lock tinc into main memory.\n"
#endif
" --logfile[=FILENAME] Write log entries to a logfile.\n"
" --pidfile=FILENAME Write PID and control socket cookie to FILENAME.\n"
" --bypass-security Disables meta protocol security, for debugging.\n"
" -o, --option[HOST.]KEY=VALUE Set global/host configuration value.\n"
#ifndef HAVE_MINGW
" -R, --chroot chroot to NET dir at startup.\n"
" -U, --user=USER setuid to given USER at startup.\n" " --help Display this help and exit.\n"
" -U, --user=USER setuid to given USER at startup.\n"
#endif
" --help Display this help and exit.\n"
" --version Output version information and exit.\n\n");
printf("Report bugs to tinc@tinc-vpn.org.\n");
}
@ -162,7 +167,7 @@ static bool parse_options(int argc, char **argv) {
case 'L': /* no detach */
#ifndef HAVE_MLOCKALL
logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "mlockall()");
logger(DEBUG_ALWAYS, LOG_ERR, "The %s option is not supported on this platform.", argv[optind - 1]);
return false;
#else
do_mlock = true;
@ -187,6 +192,12 @@ static bool parse_options(int argc, char **argv) {
list_insert_tail(cmdline_conf, cfg);
break;
#ifdef HAVE_MINGW
case 'R':
case 'U':
logger(DEBUG_ALWAYS, LOG_ERR, "The %s option is not supported on this platform.", argv[optind - 1]);
return false;
#else
case 'R': /* chroot to NETNAME dir */
do_chroot = true;
break;
@ -194,6 +205,7 @@ static bool parse_options(int argc, char **argv) {
case 'U': /* setuid to USER */
switchuser = optarg;
break;
#endif
case 1: /* show help */
show_help = true;
@ -306,14 +318,7 @@ static void free_names(void) {
static bool drop_privs(void) {
#ifdef HAVE_MINGW
if (switchuser) {
logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-U");
return false;
}
if (do_chroot) {
logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-R");
return false;
}
#else
uid_t uid = 0;
if (switchuser) {