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systemd/1080-udevd-parse_argv-warn-if-argumens-are-invalid.patch

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Based on 6f5cf8a8b1de763383f7382821147e538b7dbd6d Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Thu, 18 Sep 2014 19:02:03 +0200
Subject: [PATCH] udevd: parse_argv - warn if argumens are invalid
Found by Coverity. Fixes CID #1238780.
---
src/udev/udevd.c | 34 ++++++++++++++++++++++++++--------
1 file changed, 26 insertions(+), 8 deletions(-)
--- src/udev/udevd.c
+++ src/udev/udevd.c 2014-09-19 10:36:25.602735652 +0000
@@ -1002,11 +1002,20 @@ static void kernel_cmdline_options(struc
log_set_max_level(prio);
udev_set_log_priority(udev, prio);
} else if (startswith(opt, "udev.children-max=")) {
- children_max = strtoul(opt + 18, NULL, 0);
+ r = safe_atoi(opt + 18, &children_max);
+ if (r < 0)
+ log_warning("Invalid udev.children-max ignored: %s", opt + 18);
} else if (startswith(opt, "udev.exec-delay=")) {
- exec_delay = strtoul(opt + 16, NULL, 0);
+ r = safe_atoi(opt + 16, &exec_delay);
+ if (r < 0)
+ log_warning("Invalid udev.exec-delay ignored: %s", opt + 16);
} else if (startswith(opt, "udev.event-timeout=")) {
- event_timeout_usec = strtoul(opt + 16, NULL, 0) * USEC_PER_SEC;
+ r = safe_atou64(opt + 16, &event_timeout_usec);
+ if (r < 0) {
+ log_warning("Invalid udev.event-timeout ignored: %s", opt + 16);
+ break;
+ }
+ event_timeout_usec *= USEC_PER_SEC;
event_timeout_warn_usec = (event_timeout_usec / 3) ? : 1;
}
@@ -1052,7 +1061,7 @@ int main(int argc, char *argv[]) {
label_init("/dev");
for (;;) {
- int option;
+ int option, r;
option = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL);
if (option == -1)
@@ -1063,14 +1072,23 @@ int main(int argc, char *argv[]) {
daemonize = true;
break;
case 'c':
- children_max = strtoul(optarg, NULL, 0);
+ r = safe_atoi(optarg, &children_max);
+ if (r < 0)
+ log_warning("Invalid --children-max ignored: %s", optarg);
break;
case 'e':
- exec_delay = strtoul(optarg, NULL, 0);
+ r = safe_atoi(optarg, &exec_delay);
+ if (r < 0)
+ log_warning("Invalid --exec-delay ignored: %s", optarg);
break;
case 't':
- event_timeout_usec = strtoul(optarg, NULL, 0) * USEC_PER_SEC;
- event_timeout_warn_usec = (event_timeout_usec / 3) ? : 1;
+ r = safe_atou64(optarg, &event_timeout_usec);
+ if (r < 0)
+ log_warning("Invalig --event-timeout ignored: %s", optarg);
+ else {
+ event_timeout_usec *= USEC_PER_SEC;
+ event_timeout_warn_usec = (event_timeout_usec / 3) ? : 1;
+ }
break;
case 'D':
debug = true;