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pidfile: Use realpath() to figure out of _PATH_VARRUN is a symlink

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2018-01-13 21:49:18 +01:00
parent 32d9afc7bb
commit f9783b4b41
1 changed files with 15 additions and 2 deletions
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plugins/pidfile.c
+15 -2
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@@ -112,10 +112,23 @@ static void pidfile_reconf(void *arg)
static void pidfile_init(void *arg)
{
char *path;
struct context *ctx = arg;
ctx->wd = inotify_add_watch(ctx->fd, _PATH_VARRUN,
IN_CREATE | IN_ATTRIB | IN_DELETE | IN_MODIFY);
/*
* The bootmisc plugin is responsible for setting up /var/run.
* and/or /run, with proper symlinks etc. We depend on bootmisc
* so it's safe here to query realpath() and set up inotify.
*/
path = realpath(_PATH_VARRUN, NULL);
if (!path) {
_pe("Failed ");
return;
}
ctx->wd = inotify_add_watch(ctx->fd, path, IN_CREATE | IN_ATTRIB | IN_DELETE | IN_MODIFY);
free(path);
if (ctx->wd < 0) {
_pe("inotify_add_watch()");
close(ctx->fd);