From: Jeremy Kerr <jk@ozlabs.org>
Date: Tue, 20 Aug 2013 02:30:57 +0000 (+0800)
Subject: lib/process: handle EINTR from waitpid
X-Git-Tag: v1.0.0~507
X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=commitdiff_plain;h=fb0fdcc59d7b0f2ed97f1894b25e4424131970f6;ds=sidebyside

lib/process: handle EINTR from waitpid

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
---

diff --git a/lib/process/process.c b/lib/process/process.c
index 6fac649..1a16fb6 100644
--- a/lib/process/process.c
+++ b/lib/process/process.c
@@ -355,8 +355,13 @@ int process_run_sync(struct process *process)
 
 	process_read_stdout(procinfo);
 
-	rc = waitpid(process->pid, &process->exit_status, 0);
-	if (rc == -1) {
+	for (;;) {
+		rc = waitpid(process->pid, &process->exit_status, 0);
+		if (rc >= 0)
+			break;
+		if (errno == EINTR)
+			continue;
+
 		pb_log("%s: waitpid failed: %s\n", __func__, strerror(errno));
 		return rc;
 	}