Merge branch 'MTX-3262-single-instance-guard' into 'master'

Mtx 3262 single instance guard

See merge request !3

1 files changed, 7 insertions, 1 deletions

diff --git a/src/utils.h b/src/utils.h
index 04a71b6..eb9d5bc 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -30,12 +30,18 @@ enum {
 	USER_YESNO_YES = 1,
 };
 
+struct Lock {
+    char *path;
+    int fd;
+};
+
 int user_yesno(int def, const char *fmt, ...);
 int systemf(const char *fmt, ...);
 FILE *popenf(const char *mode, const char *fmt, ...);
 char *shell_path_expand(const char *path);
 
-char *device_lock(const char *path);
+struct Lock *device_lock(const char *path);
+struct Lock *device_unlock(struct Lock *lock);
 
 int indexOfChar(const char *array, int len, char character);