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sd-device: simplify enumerator hacks

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Boolean arithmetic is great, use it!

    if (a && !b)
      return 1;
    if (!a && b)
      return -1,

is equivalent to

    if (a != b)
      return a - b;

Furthermore:

    r = false;
    if (condition)
        r = true;

is equivalent to:

    r = condition;
This commit is contained in:
David Herrmann
2015-04-17 14:06:31 +02:00
parent 08232a020b
commit 18ae3d98d9
1 changed files with 5 additions and 12 deletions
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17
src/libsystemd/sd-device/device-enumerator.c
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@@ -273,7 +273,7 @@ int device_enumerator_add_match_is_initialized(sd_device_enumerator *enumerator)
static int device_compare(const void *_a, const void *_b) {
sd_device *a = (sd_device *)_a, *b = (sd_device *)_b;
const char *devpath_a, *devpath_b, *sound_a;
bool delay_a = false, delay_b = false;
bool delay_a, delay_b;
assert_se(sd_device_get_devpath(a, &devpath_a) >= 0);
assert_se(sd_device_get_devpath(b, &devpath_b) >= 0);
@@ -312,17 +312,10 @@ static int device_compare(const void *_a, const void *_b) {
}
/* md and dm devices are enumerated after all other devices */
if (strstr(devpath_a, "/block/md") || strstr(devpath_a, "/block/dm-"))
delay_a = true;
if (strstr(devpath_b, "/block/md") || strstr(devpath_b, "/block/dm-"))
delay_b = true;
if (delay_a && !delay_b)
return 1;
if (!delay_a && delay_b)
return -1;
delay_a = strstr(devpath_a, "/block/md") || strstr(devpath_a, "/block/dm-");
delay_b = strstr(devpath_b, "/block/md") || strstr(devpath_b, "/block/dm-");
if (delay_a != delay_b)
return delay_a - delay_b;
return strcmp(devpath_a, devpath_b);
}