waitdbg

commit 5e086cdcf8e030c7db7712e90b632cc55a4f25e2
parent 2b921f50ae0cb12589cdbb01589b662bf38999f1
Author: Louis Burda <quent.burda@gmail.com>
Date:   Thu,  9 Nov 2023 00:17:45 +0100

Remove err.h dependency and use execvp()

Diffstat:
M
waitdbg.c
 | 
13
+++++++------

1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/waitdbg.c b/waitdbg.c
@@ -1,16 +1,15 @@
 #include <unistd.h>
 #include <signal.h>
-#include <err.h>
+#include <errno.h>
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 int
 main(int argc, const char **argv)
 {
-	int ret;
-
 	if (argc < 2) {
-		printf("Usage: waitdbg CMD [ARG]..\n");
+		fprintf(stderr, "Usage: waitdbg CMD [ARG]..\n");
 		return 0;
 	}
 
@@ -18,6 +17,8 @@ main(int argc, const char **argv)
 
 	raise(SIGSTOP);
 
-	ret = execv(argv[1], (void *) &argv[1]);
-	if (!ret) err(1, "execv %s", argv[1]);
+	execvp(argv[1], (void *) &argv[1]);
+
+	fprintf(stderr, "waitdbg: execv %s: %s",
+		argv[1], strerror(errno));
 }