systemd/0152-core-command-argument-can-be-longer-than-PATH_MAX.patch
Jan Macku 0daf48d9aa systemd-250-8
Resolves: #2047682,#2068043,#2068131,#2073003,#2073994,#2082131,#2083493,#2087652,#2100340
2022-07-20 08:37:23 +02:00

65 lines
2.4 KiB
Diff

From fdc436432f1ca2dd9df2f24728916ab1201015c1 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 5 Apr 2022 21:47:46 +0900
Subject: [PATCH] core: command argument can be longer than PATH_MAX
Fixes a bug introduced by 065364920281e1cf59cab989e17aff21790505c4.
Fixes #22957.
(cherry picked from commit 58dd4999dcc81a0ed92fbd78bce3592c3e3afe9e)
Resolves: #2073994
---
src/core/load-fragment.c | 2 +-
src/test/test-load-fragment.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index ad5a0912fc..461e073269 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -1000,7 +1000,7 @@ int config_parse_exec(
if (r < 0)
return ignore ? 0 : -ENOEXEC;
- r = unit_path_printf(u, word, &resolved);
+ r = unit_full_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in %s%s: %m",
diff --git a/src/test/test-load-fragment.c b/src/test/test-load-fragment.c
index fbe4744333..c579be4150 100644
--- a/src/test/test-load-fragment.c
+++ b/src/test/test-load-fragment.c
@@ -10,6 +10,7 @@
#include "capability-util.h"
#include "conf-parser.h"
#include "fd-util.h"
+#include "fileio.h"
#include "format-util.h"
#include "fs-util.h"
#include "hashmap.h"
@@ -416,6 +417,21 @@ TEST(config_parse_exec) {
assert_se(r == 0);
assert_se(c1->command_next == NULL);
+ log_info("/* long arg */"); /* See issue #22957. */
+
+ char x[LONG_LINE_MAX-100], *y;
+ y = mempcpy(x, "/bin/echo ", STRLEN("/bin/echo "));
+ memset(y, 'x', sizeof(x) - STRLEN("/bin/echo ") - 1);
+ x[sizeof(x) - 1] = '\0';
+
+ r = config_parse_exec(NULL, "fake", 5, "section", 1,
+ "LValue", 0, x,
+ &c, u);
+ assert_se(r >= 0);
+ c1 = c1->command_next;
+ check_execcommand(c1,
+ "/bin/echo", NULL, y, NULL, false);
+
log_info("/* empty argument, reset */");
r = config_parse_exec(NULL, "fake", 4, "section", 1,
"LValue", 0, "",