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authorJohannes Sixt <j6t@kdbg.org>2010-01-10 14:11:22 +0100
committerJunio C Hamano <gitster@pobox.com>2010-01-10 10:15:03 -0800
commit2b541bf8be2bbd6cc8daf8e3d5d4a8ee30b2ce4e (patch)
treea96beedf645609deb877c8b6180bae4df1fa658e /test-run-command.c
parentab0b41daf62ec3076e980fcad492b1997b35f22b (diff)
downloadgit-2b541bf8be2bbd6cc8daf8e3d5d4a8ee30b2ce4e.tar.gz
start_command: detect execvp failures early
Previously, failures during execvp could be detected only by finish_command. However, in some situations it is beneficial for the parent process to know earlier that the child process will not run. The idea to use a pipe to signal failures to the parent process and the test case were lifted from patches by Ilari Liusvaara. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'test-run-command.c')
-rw-r--r--test-run-command.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/test-run-command.c b/test-run-command.c
new file mode 100644
index 0000000000..0612bfa7cd
--- /dev/null
+++ b/test-run-command.c
@@ -0,0 +1,35 @@
+/*
+ * test-run-command.c: test run command API.
+ *
+ * (C) 2009 Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
+ *
+ * This code is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "git-compat-util.h"
+#include "run-command.h"
+#include <string.h>
+#include <errno.h>
+
+int main(int argc, char **argv)
+{
+ struct child_process proc;
+
+ memset(&proc, 0, sizeof(proc));
+
+ if (argc < 3)
+ return 1;
+ proc.argv = (const char **)argv+2;
+
+ if (!strcmp(argv[1], "start-command-ENOENT")) {
+ if (start_command(&proc) < 0 && errno == ENOENT)
+ return 0;
+ fprintf(stderr, "FAIL %s\n", argv[1]);
+ return 1;
+ }
+
+ fprintf(stderr, "check usage\n");
+ return 1;
+}