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package/systemd: Backport fix for makefs

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The systemd fstab option "x-systemd.makefs" will fail to work, and throw
an error that it can't find a device named "" (an empty string).
Backport this fix from systemd v245.

Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
Reviewed-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Brandon Maier
2020-09-08 17:12:56 -05:00
committed by Peter Korsgaard
parent eb81345aa9
commit 81b7cfcbd9
1 changed files with 48 additions and 0 deletions
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48
package/systemd/0004-makefs-strdup-arguments-to-mkfs.patch Normal file
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@@ -0,0 +1,48 @@
From c315b79fb43a4d921a533ba0c2cb303324887993 Mon Sep 17 00:00:00 2001
From: Oliver Giles <ohw.giles@gmail.com>
Date: Thu, 13 Feb 2020 08:55:57 +0200
Subject: [PATCH] makefs: strdup arguments to mkfs
Don't pass values from argv[] directly to child process forked using
safe_fork, because it clears argv[]. strdup them first.
[Brandon: backport from https://github.com/systemd/systemd/commit/c315b79fb43a4d921a533ba0c2cb303324887993]
Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
---
src/partition/makefs.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/src/partition/makefs.c b/src/partition/makefs.c
index 951989cbb6..d73d67c4e8 100644
--- a/src/partition/makefs.c
+++ b/src/partition/makefs.c
@@ -41,8 +41,7 @@ static int makefs(const char *type, const char *device) {
}
static int run(int argc, char *argv[]) {
- const char *device, *type;
- _cleanup_free_ char *detected = NULL;
+ _cleanup_free_ char *device = NULL, *type = NULL, *detected = NULL;
struct stat st;
int r;
@@ -52,8 +51,14 @@ static int run(int argc, char *argv[]) {
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"This program expects two arguments.");
- type = argv[1];
- device = argv[2];
+ /* type and device must be copied because makefs calls safe_fork, which clears argv[] */
+ type = strdup(argv[1]);
+ if (!type)
+ return -ENOMEM;
+
+ device = strdup(argv[2]);
+ if (!device)
+ return -ENOMEM;
if (stat(device, &st) < 0)
return log_error_errno(errno, "Failed to stat \"%s\": %m", device);
--
2.23.0