From 407389d7fedc37de627cbb31fc42431dcd799173 Mon Sep 17 00:00:00 2001
From: achims311 <1224648+achims311@users.noreply.github.com>
Date: Fri, 11 Nov 2022 10:59:58 +0100
Subject: [PATCH] Allow zfs file systems in mount check

zfs works with named pools, which are not visible in the file system.

Fixes #7
---
 fatrace.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fatrace.c b/fatrace.c
index 352aa31..d4f0dda 100644
--- a/fatrace.c
+++ b/fatrace.c
@@ -378,8 +378,11 @@ setup_fanotify (int fan_fd)
          * are virtual and do not actually cause disk access. */
         if (mount->mnt_fsname == NULL || access (mount->mnt_fsname, F_OK) != 0 ||
             mount->mnt_fsname[0] != '/') {
-            debug ("ignore: fsname: %s dir: %s type: %s", mount->mnt_fsname, mount->mnt_dir, mount->mnt_type);
-            continue;
+            /* zfs mount point don't start with a "/" so allow them anyway */
+            if (strcmp(mount->mnt_type, "zfs") != 0) {
+                debug ("ignore: fsname: %s dir: %s type: %s", mount->mnt_fsname, mount->mnt_dir, mount->mnt_type);
+                continue;
+            }
         }
 
         /* root dir already added above */