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sysctl: add --cat-config

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-04-26 21:08:53 +02:00
parent ec0327d69c
commit 3c51c62616
2 changed files with 27 additions and 7 deletions
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1
man/systemd-sysctl.service.xml
View File

@ -79,6 +79,7 @@
</listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="cat-config" />
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />

33
src/sysctl/sysctl.c
View File

@ -23,11 +23,13 @@
#include "string-util.h"
#include "strv.h"
#include "sysctl-util.h"
#include "terminal-util.h"
#include "util.h"
static char **arg_prefixes = NULL;
static bool arg_cat_config = false;
static const char conf_file_dirs[] = CONF_PATHS_NULSTR("sysctl.d");
static char **config_dirs = CONF_PATHS_STRV("sysctl.d");
static int apply_all(OrderedHashmap *sysctl_options) {
char *property, *value;
@ -83,7 +85,7 @@ static int parse_file(OrderedHashmap *sysctl_options, const char *path, bool ign
assert(path);
r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
r = search_and_fopen(path, "re", NULL, (const char**) config_dirs, &f);
if (r < 0) {
if (ignore_enoent && r == -ENOENT)
return 0;
@ -168,6 +170,7 @@ static void help(void) {
"Applies kernel sysctl settings.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --cat-config Show configuration files\n"
" --prefix=PATH Only apply rules with the specified prefix\n"
, program_invocation_short_name);
}
@ -176,13 +179,15 @@ static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_PREFIX
ARG_CAT_CONFIG,
ARG_PREFIX,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "prefix", required_argument, NULL, ARG_PREFIX },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "cat-config", no_argument, NULL, ARG_CAT_CONFIG },
{ "prefix", required_argument, NULL, ARG_PREFIX },
{}
};
@ -202,6 +207,10 @@ static int parse_argv(int argc, char *argv[]) {
case ARG_VERSION:
return version();
case ARG_CAT_CONFIG:
arg_cat_config = true;
break;
case ARG_PREFIX: {
char *p;
@ -231,6 +240,11 @@ static int parse_argv(int argc, char *argv[]) {
assert_not_reached("Unhandled option");
}
if (arg_cat_config && argc > optind) {
log_error("Positional arguments are not allowed with --cat-config");
return -EINVAL;
}
return 1;
}
@ -268,12 +282,17 @@ int main(int argc, char *argv[]) {
_cleanup_strv_free_ char **files = NULL;
char **f;
r = conf_files_list_nulstr(&files, ".conf", NULL, 0, conf_file_dirs);
r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char**) config_dirs);
if (r < 0) {
log_error_errno(r, "Failed to enumerate sysctl.d files: %m");
goto finish;
}
if (arg_cat_config) {
r = cat_files(NULL, files, 0);
goto finish;
}
STRV_FOREACH(f, files) {
k = parse_file(sysctl_options, *f, true);
if (k < 0 && r == 0)