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commit 3fc721d074811416f4024976c472ddc396c4f00d
parent e96f0b9671d12a6977225ea22f7edf455331aa6e
Author: Jan Klemkow <j.klemkow@wemelug.de>
Date:   Thu, 16 Apr 2020 22:34:15 +0200

ptty: wait for corrent child pid

Diffstat:
M
ptty.c
 | 
9
++++++---

1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/ptty.c b/ptty.c
@@ -79,8 +79,8 @@ main(int argc, char *argv[])
 		usage();
 
 	int mfd;
-	pid_t pid = forkpty(&mfd, NULL, NULL, &ws);
-	switch (pid) {
+	pid_t child = forkpty(&mfd, NULL, NULL, &ws);
+	switch (child) {
 	case -1:
 		die("forkpty");
 	case  0: /* child */
@@ -138,8 +138,11 @@ main(int argc, char *argv[])
 			break;
 	}
 
+	pid_t pid;
 	int status;
-	waitpid(pid, &status, 0);
+	while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
+		if (pid != child)
+			continue;
 
 	return WEXITSTATUS(status);
 }