bugfix: Get path to 'mv' using meson (fixes #509)

Author: andy5995

ChangeLog

@@ -1,11 +1,15 @@
 === rmw ChangeLog ===
 
+2025-12-29
+
+  * bugfix: Get path to 'mv' using meson (fixes #509)
+
 2025-11-06
 
   * Release v0.9.4
 
 2025-10-20
-  * (bugfix) Allow rmw to move directories to waste folder on btrfs filesystems
+  * bugfix: Allow rmw to move directories to waste folder on btrfs filesystems
     (#497)
 
 2024-11-07

meson.build

@@ -61,6 +61,9 @@ foreach h : check_headers
   endif
 endforeach
 
+mv_prog = find_program('mv', required: true)
+add_project_arguments('-DMV_PATH="' + mv_prog.full_path() + '"', language: 'c')
+
 localedir = join_paths(get_option('prefix'), get_option('localedir'))
 subdir('po')
 

src/utils.c

@@ -517,13 +517,19 @@ safe_mv_via_exec(const char *src, const char *dst, int *out_errno)
 
   if (pid == 0)
   {
-    /* child: exec /bin/mv directly (argv[0] is "mv") */
-    char *const argv_mv[] = { "mv", (char *) src, (char *) dst, NULL };
-    execv("/bin/mv", argv_mv);
-    /* if execv fails, set errno and exit with a distinct code */
-    _exit(127);
+    /* child: exec mv using path discovered by Meson */
+    char *const argv_mv[] = {
+      MV_PATH,                  /* argv[0] should match the executed path */
+      (char *) src,
+      (char *) dst,
+      NULL
+    };
+
+    execv(MV_PATH, argv_mv);
+    _exit(127);                 /* only reached on execv failure */
   }
 
+
   /* parent: wait for child */
   if (waitpid(pid, &status, 0) < 0)
   {