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storagetm: Check if /sys/kernel/config is a mountpoint

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Otherwise we'll fail with an unclear error later on so let's check
this first before continuing.
This commit is contained in:
Daan De Meyer 2025-02-08 12:44:19 +01:00
parent 1740bbc98b
commit dc90f083d0
1 changed files with 9 additions and 0 deletions
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9
src/storagetm/storagetm.c
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@ -18,6 +18,7 @@
#include "local-addresses.h"
#include "loop-util.h"
#include "main-func.h"
#include "mountpoint-util.h"
#include "os-util.h"
#include "parse-argument.h"
#include "path-util.h"
@ -1128,6 +1129,14 @@ static int run(int argc, char* argv[]) {
if (r <= 0)
return r;
/* If systemd-storagetm is invoked outside of it's unit /sys/kernel/config/ might not be mounted yet,
* so let's check explicitly whether it is mounted or not. */
r = path_is_mount_point("/sys/kernel/config");
if (r < 0)
return log_error_errno(r, "Failed to check if the configfs filesystem is mounted at /sys/kernel/config/: %m");
if (r == 0)
return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "The configfs filesystem must be mounted at /sys/kernel/config/ to be able to use systemd-storagetm");
r = sd_event_new(&event);
if (r < 0)
return log_error_errno(r, "Failed to allocate event loop: %m");