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udev: avoid magic constants in kernel-cmdline parsers

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Lets recognize the fact that startswith() returns a pointer to the tail on
success. Use it instead of hard-coding string-lengths as magic constants.
This commit is contained in:
David Herrmann 2014-11-05 12:56:49 +01:00
parent f671774f52
commit cfe2061add
1 changed files with 12 additions and 12 deletions
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24
src/udev/udevd.c
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@ -967,7 +967,7 @@ static void kernel_cmdline_options(struct udev *udev) {
return;
FOREACH_WORD_QUOTED(word, l, line, state) {
char *s, *opt;
char *s, *opt, *value;
s = strndup(word, l);
if (!s)
@ -979,24 +979,24 @@ static void kernel_cmdline_options(struct udev *udev) {
else
opt = s;
if (startswith(opt, "udev.log-priority=")) {
if ((value = startswith(opt, "udev.log-priority="))) {
int prio;
prio = util_log_priority(opt + 18);
prio = util_log_priority(value);
log_set_max_level(prio);
udev_set_log_priority(udev, prio);
} else if (startswith(opt, "udev.children-max=")) {
r = safe_atoi(opt + 18, &arg_children_max);
} else if ((value = startswith(opt, "udev.children-max="))) {
r = safe_atoi(value, &arg_children_max);
if (r < 0)
log_warning("Invalid udev.children-max ignored: %s", opt + 18);
} else if (startswith(opt, "udev.exec-delay=")) {
r = safe_atoi(opt + 16, &arg_exec_delay);
log_warning("Invalid udev.children-max ignored: %s", value);
} else if ((value = startswith(opt, "udev.exec-delay="))) {
r = safe_atoi(value, &arg_exec_delay);
if (r < 0)
log_warning("Invalid udev.exec-delay ignored: %s", opt + 16);
} else if (startswith(opt, "udev.event-timeout=")) {
r = safe_atou64(opt + 19, &arg_event_timeout_usec);
log_warning("Invalid udev.exec-delay ignored: %s", value);
} else if ((value = startswith(opt, "udev.event-timeout="))) {
r = safe_atou64(value, &arg_event_timeout_usec);
if (r < 0) {
log_warning("Invalid udev.event-timeout ignored: %s", opt + 19);
log_warning("Invalid udev.event-timeout ignored: %s", value);
break;
}
arg_event_timeout_usec *= USEC_PER_SEC;