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-rw-r--r--iexec.c36
1 files changed, 21 insertions, 15 deletions
diff --git a/iexec.c b/iexec.c
index 04e8e91..9853eb1 100644
--- a/iexec.c
+++ b/iexec.c
@@ -1,7 +1,7 @@
/*
* iexec.c: run a program and restart on file change
*
- * Copyright (c) 2017, Přemysl Eric Janouch <p@janouch.name>
+ * Copyright (c) 2017 - 2023, Přemysl Eric Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
@@ -29,21 +29,26 @@ static bool g_restarting = false;
static int g_inotify_fd, g_inotify_wd;
static void
+handle_inotify_event (const struct inotify_event *e, const char *base)
+{
+ if (e->wd != g_inotify_wd || strcmp (e->name, base))
+ return;
+
+ print_debug ("file changed, killing child");
+ g_restarting = true;
+ if (g_child >= 0 && kill (g_child, SIGINT))
+ print_error ("kill: %s", strerror (errno));
+}
+
+static void
handle_file_change (const char *base)
{
- char buf[4096]; ssize_t len; const struct inotify_event *e;
+ char buf[4096];
+ ssize_t len = 0;
+ struct inotify_event *e = NULL;
while ((len = read (g_inotify_fd, buf, sizeof buf)) > 0)
- for (char *ptr = buf; ptr < buf + len; ptr += sizeof *e + e->len)
- {
- e = (const struct inotify_event *) buf;
- if (e->wd != g_inotify_wd || strcmp (e->name, base))
- continue;
-
- print_debug ("file changed, killing child");
- g_restarting = true;
- if (kill (g_child, SIGINT))
- print_error ("kill: %s", strerror (errno));
- }
+ for (char *ptr = buf; ptr < buf + len; ptr += sizeof *e + e->len)
+ handle_inotify_event ((e = (struct inotify_event *) buf), base);
}
static void
@@ -148,12 +153,13 @@ main (int argc, char *argv[])
if (sigprocmask (SIG_BLOCK, &chld, &orig))
exit_fatal ("sigprocmask: %s", strerror (errno));
- char *path = xstrdup (argv[0]);
+ char *path = NULL;
+ char *dir = dirname ((path = xstrdup (argv[0])));
if ((g_inotify_fd = inotify_init1 (IN_NONBLOCK)) < 0)
exit_fatal ("inotify_init1: %s", strerror (errno));
if ((g_inotify_wd = inotify_add_watch (g_inotify_fd,
- dirname (path), IN_MOVED_TO | IN_CLOSE_WRITE)) < 0)
+ dir, IN_MOVED_TO | IN_CLOSE_WRITE)) < 0)
exit_fatal ("inotify_add_watch: %s", strerror (errno));
free (path);