#include "log.h"
#include "strv.h"
#include "util.h"
-#include "strv.h"
#include "hashmap.h"
#include "path-util.h"
#include "conf-files.h"
+#include "fileio.h"
+#include "build.h"
static char **arg_prefixes = NULL;
-static const char conf_file_dirs[] =
- "/etc/sysctl.d\0"
- "/run/sysctl.d\0"
- "/usr/local/lib/sysctl.d\0"
- "/usr/lib/sysctl.d\0"
-#ifdef HAVE_SPLIT_USR
- "/lib/sysctl.d\0"
-#endif
- ;
-
-static char *normalize_sysctl(char *s) {
+static const char conf_file_dirs[] = CONF_DIRS_NULSTR("sysctl");
+
+static char* normalize_sysctl(char *s) {
char *n;
- for (n = s; *n; 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;
}
log_debug("Setting '%s' to '%s'", property, value);
- p = new(char, sizeof("/proc/sys/") + strlen(property));
+ p = new(char, strlen("/proc/sys/") + strlen(property) + 1);
if (!p)
return log_oom();
}
}
- k = write_one_line_file(p, value);
+ 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));
assert(path);
- r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f);
+ r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
if (r < 0) {
- if (ignore_enoent && errno == -ENOENT)
+ if (ignore_enoent && r == -ENOENT)
return 0;
- log_error("Failed to open file '%s', ignoring: %s", path, strerror(-r));
- return r;
+ return log_error_errno(r, "Failed to open file '%s', ignoring: %m", path);
}
- log_debug("parse: %s\n", path);
+ log_debug("parse: %s", path);
while (!feof(f)) {
char l[LINE_MAX], *p, *value, *new_value, *property, *existing;
+ void *v;
int k;
if (!fgets(l, sizeof(l), f)) {
if (feof(f))
break;
- log_error("Failed to read file '%s', ignoring: %m", path);
+ log_error_errno(errno, "Failed to read file '%s', ignoring: %m", path);
return -errno;
}
if (!*p)
continue;
- if (strchr(COMMENTS, *p))
+ if (strchr(COMMENTS "\n", *p))
continue;
value = strchr(p, '=');
p = normalize_sysctl(strstrip(p));
value = strstrip(value);
- existing = hashmap_get(sysctl_options, p);
+ existing = hashmap_get2(sysctl_options, p, &v);
if (existing) {
- if (!streq(value, existing))
- log_warning("Two ore more conflicting assignments of %s, ignoring.", property);
+ if (streq(value, existing))
+ continue;
- continue;
+ log_info("Overwriting earlier assignment of %s in file '%s'.", p, path);
+ free(hashmap_remove(sysctl_options, p));
+ free(v);
}
property = strdup(p);
k = hashmap_put(sysctl_options, property, new_value);
if (k < 0) {
- log_error("Failed to add sysctl variable %s to hashmap: %s", property, strerror(-r));
+ log_error_errno(k, "Failed to add sysctl variable %s to hashmap: %m", property);
free(property);
free(new_value);
return k;
return r;
}
-static int help(void) {
-
+static void help(void) {
printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
"Applies kernel sysctl settings.\n\n"
" -h --help Show this help\n"
- " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n",
- program_invocation_short_name);
-
- return 0;
+ " --version Show package version\n"
+ " --prefix=PATH Only apply rules with the specified prefix\n"
+ , program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
enum {
+ ARG_VERSION = 0x100,
ARG_PREFIX
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
{ "prefix", required_argument, NULL, ARG_PREFIX },
- { NULL, 0, NULL, 0 }
+ {}
};
int c;
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
switch (c) {
help();
return 0;
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
case ARG_PREFIX: {
char *p;
- char **l;
- for (p = optarg; *p; p++)
- if (*p == '.')
- *p = '/';
-
- l = strv_append(arg_prefixes, optarg);
- if (!l)
+ /* We used to require people to specify absolute paths
+ * 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);
+ if (startswith(optarg, "/proc/sys"))
+ p = strdup(optarg);
+ else
+ p = strappend("/proc/sys/", optarg);
+
+ if (!p)
+ return log_oom();
+ if (strv_consume(&arg_prefixes, p) < 0)
return log_oom();
-
- strv_free(arg_prefixes);
- arg_prefixes = l;
break;
}
return -EINVAL;
default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
+ assert_not_reached("Unhandled option");
}
- }
return 1;
}
umask(0022);
- sysctl_options = hashmap_new(string_hash_func, string_compare_func);
+ sysctl_options = hashmap_new(&string_hash_ops);
if (!sysctl_options) {
r = log_oom();
goto finish;
r = conf_files_list_nulstr(&files, ".conf", NULL, conf_file_dirs);
if (r < 0) {
- log_error("Failed to enumerate sysctl.d files: %s", strerror(-r));
+ log_error_errno(r, "Failed to enumerate sysctl.d files: %m");
goto finish;
}
- r = parse_file(sysctl_options, "/etc/sysctl.conf", true);
-
STRV_FOREACH(f, files) {
k = parse_file(sysctl_options, *f, true);
if (k < 0 && r == 0)