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-rw-r--r--Makefile.am4
-rw-r--r--src/shared/sysctl-util.c88
-rw-r--r--src/shared/sysctl-util.h27
-rw-r--r--src/sysctl/sysctl.c66
4 files changed, 129 insertions, 56 deletions
diff --git a/Makefile.am b/Makefile.am
index 3539e03c5e..89a8019b0f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -908,7 +908,9 @@ libsystemd_shared_la_SOURCES = \
src/shared/sigbus.h \
src/shared/build.h \
src/shared/import-util.c \
- src/shared/import-util.h
+ src/shared/import-util.h \
+ src/shared/sysctl-util.c \
+ src/shared/sysctl-util.h
if HAVE_UTMP
libsystemd_shared_la_SOURCES += \
diff --git a/src/shared/sysctl-util.c b/src/shared/sysctl-util.c
new file mode 100644
index 0000000000..650c9c98b9
--- /dev/null
+++ b/src/shared/sysctl-util.c
@@ -0,0 +1,88 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <limits.h>
+#include <getopt.h>
+
+#include "log.h"
+#include "util.h"
+#include "fileio.h"
+#include "build.h"
+#include "sysctl-util.h"
+
+char *sysctl_normalize(char *s) {
+ char *n;
+
+ n = strpbrk(s, "/.");
+ /* If the first separator is a slash, the path is
+ * assumed to be normalized and slashes remain slashes
+ * and dots remains dots. */
+ if (!n || *n == '/')
+ return s;
+
+ /* Otherwise, dots become slashes and slashes become
+ * dots. Fun. */
+ while (n) {
+ if (*n == '.')
+ *n = '/';
+ else
+ *n = '.';
+
+ n = strpbrk(n + 1, "/.");
+ }
+
+ return s;
+}
+
+int sysctl_write(const char *property, const char *value) {
+ _cleanup_free_ char *p = NULL;
+ char *n;
+
+ log_debug("Setting '%s' to '%s'", property, value);
+
+ p = new(char, strlen("/proc/sys/") + strlen(property) + 1);
+ if (!p)
+ return log_oom();
+
+ n = stpcpy(p, "/proc/sys/");
+ strcpy(n, property);
+
+ return write_string_file(p, value);
+}
+
+int sysctl_read(const char *property, char **content) {
+ _cleanup_free_ char *p = NULL;
+ char *n;
+
+ p = new(char, strlen("/proc/sys/") + strlen(property) + 1);
+ if (!p)
+ return log_oom();
+
+ n = stpcpy(p, "/proc/sys/");
+ strcpy(n, property);
+
+ return read_full_file(p, content, NULL);
+}
diff --git a/src/shared/sysctl-util.h b/src/shared/sysctl-util.h
new file mode 100644
index 0000000000..2ee6454e52
--- /dev/null
+++ b/src/shared/sysctl-util.h
@@ -0,0 +1,27 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+char *sysctl_normalize(char *s);
+int sysctl_read(const char *property, char **value);
+int sysctl_write(const char *property, const char *value);
+
diff --git a/src/sysctl/sysctl.c b/src/sysctl/sysctl.c
index 2415d84526..dd2e118737 100644
--- a/src/sysctl/sysctl.c
+++ b/src/sysctl/sysctl.c
@@ -35,61 +35,12 @@
#include "conf-files.h"
#include "fileio.h"
#include "build.h"
+#include "sysctl-util.h"
static char **arg_prefixes = NULL;
static const char conf_file_dirs[] = CONF_DIRS_NULSTR("sysctl");
-static char* normalize_sysctl(char *s) {
- char *n;
-
- n = strpbrk(s, "/.");
- /* If the first separator is a slash, the path is
- * assumed to be normalized and slashes remain slashes
- * and dots remains dots. */
- if (!n || *n == '/')
- return s;
-
- /* Otherwise, dots become slashes and slashes become
- * dots. Fun. */
- while (n) {
- if (*n == '.')
- *n = '/';
- else
- *n = '.';
-
- n = strpbrk(n + 1, "/.");
- }
-
- return s;
-}
-
-static int apply_sysctl(const char *property, const char *value) {
- _cleanup_free_ char *p = NULL;
- char *n;
- int r = 0, k;
-
- log_debug("Setting '%s' to '%s'", property, value);
-
- p = new(char, strlen("/proc/sys/") + strlen(property) + 1);
- if (!p)
- return log_oom();
-
- n = stpcpy(p, "/proc/sys/");
- strcpy(n, property);
-
- k = write_string_file(p, value);
- if (k < 0) {
- log_full(k == -ENOENT ? LOG_DEBUG : LOG_WARNING,
- "Failed to write '%s' to '%s': %s", value, p, strerror(-k));
-
- if (k != -ENOENT && r == 0)
- r = k;
- }
-
- return r;
-}
-
static int apply_all(Hashmap *sysctl_options) {
int r = 0;
char *property, *value;
@@ -100,9 +51,14 @@ static int apply_all(Hashmap *sysctl_options) {
HASHMAP_FOREACH_KEY(value, property, sysctl_options, i) {
int k;
- k = apply_sysctl(property, value);
- if (k < 0 && r == 0)
- r = k;
+ k = sysctl_write(property, value);
+ if (k < 0) {
+ log_full(k == -ENOENT ? LOG_DEBUG : LOG_WARNING,
+ "Failed to write '%s' to '%s': %s", value, property, strerror(-k));
+
+ if (r == 0)
+ r = k;
+ }
}
return r;
}
@@ -154,7 +110,7 @@ static int parse_file(Hashmap *sysctl_options, const char *path, bool ignore_eno
*value = 0;
value++;
- p = normalize_sysctl(strstrip(p));
+ p = sysctl_normalize(strstrip(p));
value = strstrip(value);
if (!strv_isempty(arg_prefixes)) {
@@ -251,7 +207,7 @@ static int parse_argv(int argc, char *argv[]) {
* in /proc/sys in the past. This is kinda useless, but
* we need to keep compatibility. We now support any
* sysctl name available. */
- normalize_sysctl(optarg);
+ sysctl_normalize(optarg);
if (startswith(optarg, "/proc/sys"))
p = strdup(optarg);
else
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 15:25:53 +0000