From: Alyssa Ross <hi@alyssa.is>
To: devel@spectrum-os.org
Subject: [PATCH ucspi-vsock 6/7] exec: add execzp()
Date: Fri, 19 Mar 2021 02:56:53 +0000 [thread overview]
Message-ID: <20210319025648.17925-6-hi@alyssa.is> (raw)
In-Reply-To: <20210319025349.8839-2-hi@alyssa.is>
---
This will be used by the new version of vsockserver, which will use an
argz vector to build up the command line it will exec into.
exec.c | 22 ++++++++++++++++++++++
exec.h | 7 +++++++
2 files changed, 29 insertions(+)
create mode 100644 exec.c
create mode 100644 exec.h
diff --git a/exec.c b/exec.c
new file mode 100644
index 0000000..cc55200
--- /dev/null
+++ b/exec.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-FileCopyrightText: 2021 Alyssa Ross <hi@alyssa.is>
+
+#define _GNU_SOURCE
+
+#include <argz.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "exec.h"
+
+// Like execvp, but takes an argz vector instead of an argv array.
+int execzp(const char *file, const char *argz, size_t len)
+{
+ char **argv = calloc(argz_count(argz, len) + 1, sizeof(char *));
+ if (!argv)
+ return -1;
+
+ argz_extract(argz, len, argv);
+
+ return execvp(file, argv);
+}
diff --git a/exec.h b/exec.h
new file mode 100644
index 0000000..261e113
--- /dev/null
+++ b/exec.h
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-FileCopyrightText: 2021 Alyssa Ross <hi@alyssa.is>
+
+#include <stddef.h>
+
+// Like execvp, but takes an argz vector instead of an argv array.
+int execzp(const char *file, const char *argz, size_t len);
--
2.30.0
next prev parent reply other threads:[~2021-03-19 3:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 3:23 Broken threading fix Alyssa Ross
2021-03-19 2:56 ` [PATCH ucspi-vsock 1/7] vsock: get cid and port instead of just cid Alyssa Ross
2021-03-19 2:53 ` [PATCH ucspi-vsock 0/7] Extract vsockserver-socketbinder and vsockserverd Alyssa Ross
2021-03-19 3:19 ` Alyssa Ross
2021-03-19 2:56 ` [PATCH ucspi-vsock 2/7] vsock: check socket family before reading sockaddr Alyssa Ross
2021-03-19 2:56 ` [PATCH ucspi-vsock 3/7] vsockserver: switch to a non-blocking socket Alyssa Ross
2021-03-19 2:56 ` [PATCH ucspi-vsock 4/7] configure: create, to generate config.h Alyssa Ross
2021-03-19 2:56 ` [PATCH ucspi-vsock 5/7] log: add die function Alyssa Ross
2021-03-19 2:56 ` Alyssa Ross [this message]
2021-03-19 3:17 ` [PATCH ucspi-vsock 7/7] Extract vsockserver-socketbinder and vsockserverd Alyssa Ross
2021-03-19 3:39 ` Cole Helbling
2021-03-20 20:24 ` Alyssa Ross
2021-03-21 2:52 ` Cole Helbling
2021-03-21 14:33 ` Alyssa Ross
2021-03-21 14:38 ` Alyssa Ross
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