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plugins: sys: watch uevent to prevent feedback loop

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Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg
2021-05-13 21:20:08 +02:00
parent c27f3603e6
commit 2018c82ea1
1 changed files with 12 additions and 3 deletions
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plugins/sys.c
+12 -3
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@@ -50,10 +50,19 @@ static void sys_cond(int set)
cond_clear(cond);
}
static int check_online(char *path)
static int check_online(char *ac)
{
char path[strlen(ac) + 1];
char *ptr;
int val;
strlcpy(path, ac, sizeof(path));
ptr = strrchr(path, '/');
if (!ptr)
return 0;
ptr[1] = 0;
strlcat(path, "online", sizeof(path));
if (fngetint(path, &val))
return 0;
@@ -172,11 +181,11 @@ static void sys_init(void *arg)
if (is_ac(path, sizeof(path))) {
num_ac++;
snprintf(path, sizeof(path), "%s/%s/online", _PATH_SYSFS_PWR, nm);
snprintf(path, sizeof(path), "%s/%s/uevent", _PATH_SYSFS_PWR, nm);
if (check_online(path))
num_ac_online++;
if (iwatch_add(&iw_sys, path, 0))
if (iwatch_add(&iw_sys, path, IN_CLOSE_NOWRITE))
_pe("Failed setting up pwr monitor for %s", path);
}
free(d[i]);