From 581f6c7f1d94f287cb8718ad2bbf6153ac71c84d Mon Sep 17 00:00:00 2001
From: Pauli Virtanen <pav@iki.fi>
Date: Sat, 5 Mar 2022 11:57:40 +0200
Subject: [PATCH] pwtest: add pwtest_spawn for running external programs

---
 test/pwtest.c | 28 ++++++++++++++++++++++++++++
 test/pwtest.h |  5 +++++
 2 files changed, 33 insertions(+)

diff --git a/test/pwtest.c b/test/pwtest.c
index c711e2f37..f1604c094 100644
--- a/test/pwtest.c
+++ b/test/pwtest.c
@@ -407,6 +407,34 @@ pwtest_mkstemp(char path[PATH_MAX])
 		pwtest_error_with_msg("Unable to create temporary file: %s", strerror(errno));
 }
 
+int
+pwtest_spawn(const char *file, char *const argv[])
+{
+	int r;
+	int status = -1;
+	pid_t pid;
+	const int fail_code = 121;
+
+	pid = fork();
+	if (pid == 0) {
+		/* child process */
+		setlinebuf(stderr);
+		setlinebuf(stdout);
+		execvp(file, (char **)argv);
+		exit(fail_code);
+	} else if (pid < 0)
+		pwtest_error_with_msg("Unable to fork: %s", strerror(errno));
+
+	r = waitpid(pid, &status, 0);
+	if (r <= 0)
+		pwtest_error_with_msg("waitpid failed: %s", strerror(errno));
+
+	if (WEXITSTATUS(status) == fail_code)
+		pwtest_error_with_msg("exec %s failed", file);
+
+	return status;
+}
+
 void _pwtest_add(struct pwtest_context *ctx, struct pwtest_suite *suite,
 		 const char *funcname, const void *func, ...)
 {
diff --git a/test/pwtest.h b/test/pwtest.h
index 576399ead..9c0737523 100644
--- a/test/pwtest.h
+++ b/test/pwtest.h
@@ -558,6 +558,11 @@ pwtest_spa_plugin_try_load_interface(struct pwtest_spa_plugin *plugin,
  */
 void pwtest_mkstemp(char path[PATH_MAX]);
 
+/**
+ * Run a command and wait for it to return.
+ */
+int pwtest_spawn(const char *file, char *const argv[]);
+
 
 /**
  * \}