-/*-*- Mode: C; c-basic-offset: 8 -*-*/
-
-/***
- 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 General Public License as published by
- the Free Software Foundation; either version 2 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
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/stat.h>
-#include <stdio.h>
-#include <getopt.h>
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <dirent.h>
-
-#include "log.h"
-#include "path-lookup.h"
-#include "util.h"
-#include "macro.h"
-#include "strv.h"
-#include "conf-parser.h"
-#include "dbus-common.h"
-#include "sd-daemon.h"
-
-static bool arg_force = false;
-static bool arg_all = false;
-static bool arg_verbose = false;
-
-static enum {
- WHERE_SYSTEM,
- WHERE_SESSION,
- WHERE_GLOBAL,
-} arg_where = WHERE_SYSTEM;
-
-static enum {
- ACTION_INVALID,
- ACTION_ENABLE,
- ACTION_DISABLE,
- ACTION_REALIZE,
- ACTION_TEST
-} arg_action = ACTION_INVALID;
-
-static enum {
- REALIZE_NO, /* Don't reload/start/stop or anything */
- REALIZE_RELOAD, /* Only reload daemon config, don't stop/start */
- REALIZE_MINIMAL, /* Only shutdown/restart if running. */
- REALIZE_MAYBE, /* Start if WantedBy= suggests */
- REALIZE_YES /* Start unconditionally */
-} arg_realize = REALIZE_NO;
-
-typedef struct {
- char *name;
- char *path;
-
- char **aliases;
- char **wanted_by;
-} InstallInfo;
-
-static Hashmap *will_install = NULL, *have_installed = NULL;
-static Set *remove_symlinks_to = NULL;
-
-static int help(void) {
-
- printf("%s [OPTIONS...] {COMMAND} ...\n\n"
- "Install init system units.\n\n"
- " -h --help Show this help\n"
- " --force Override existing links\n"
- " --verbose Show what is being done as it is done\n"
- " --system Install into system\n"
- " --session Install into session\n"
- " --global Install into all sessions\n"
- " --all When disabling, remove all symlinks, not\n"
- " just those listed in the [Install] section\n"
- " --realize[=MODE] Start/stop/restart unit after installation\n"
- " Takes 'no', 'minimal', 'maybe' or 'yes'\n\n"
- "Commands:\n"
- " enable [NAME...] Enable one or more units\n"
- " disable [NAME...] Disable one or more units\n"
- " realize [NAME...] Test whether any of the specified units are enabled\n"
- " and the start/stop/restart units accordingly\n"
- " test [NAME...] Test whether any of the specified units are enabled\n",
- program_invocation_short_name);
-
- return 0;
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_SESSION = 0x100,
- ARG_SYSTEM,
- ARG_GLOBAL,
- ARG_FORCE,
- ARG_REALIZE,
- ARG_ALL
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "session", no_argument, NULL, ARG_SESSION },
- { "system", no_argument, NULL, ARG_SYSTEM },
- { "global", no_argument, NULL, ARG_GLOBAL },
- { "force", no_argument, NULL, ARG_FORCE },
- { "realize", optional_argument, NULL, ARG_REALIZE },
- { "all", no_argument, NULL, ARG_ALL },
- { "verbose", no_argument, NULL, 'v' },
- { NULL, 0, NULL, 0 }
- };
-
- int c;
- bool realize_switch = false;
-
- assert(argc >= 1);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "hv", options, NULL)) >= 0) {
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_SESSION:
- arg_where = WHERE_SESSION;
- break;
-
- case ARG_SYSTEM:
- arg_where = WHERE_SYSTEM;
- break;
-
- case ARG_GLOBAL:
- arg_where = WHERE_GLOBAL;
- break;
-
- case ARG_FORCE:
- arg_force = true;
- break;
-
- case ARG_REALIZE:
-
- realize_switch = true;
-
- if (!optarg)
- arg_realize = REALIZE_MINIMAL;
- else if (streq(optarg, "no"))
- arg_realize = REALIZE_NO;
- else if (streq(optarg, "minimal"))
- arg_realize = REALIZE_MINIMAL;
- else if (streq(optarg, "maybe"))
- arg_realize = REALIZE_MAYBE;
- else if (streq(optarg, "yes"))
- arg_realize = REALIZE_YES;
- else if (streq(optarg, "reload"))
- arg_realize = REALIZE_RELOAD;
- else {
- log_error("Invalid --realize argument %s", optarg);
- return -EINVAL;
- }
-
- break;
-
- case ARG_ALL:
- arg_all = true;
- break;
-
- case 'v':
- arg_verbose = true;
- break;
-
- case '?':
- return -EINVAL;
-
- default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
- }
- }
-
- if (optind >= argc) {
- help();
- return -EINVAL;
- }
-
- if (streq(argv[optind], "enable"))
- arg_action = ACTION_ENABLE;
- else if (streq(argv[optind], "disable"))
- arg_action = ACTION_DISABLE;
- else if (streq(argv[optind], "test"))
- arg_action = ACTION_TEST;
- else if (streq(argv[optind], "realize")) {
- arg_action = ACTION_REALIZE;
-
- if (!realize_switch)
- arg_realize = REALIZE_MINIMAL;
- } else {
- log_error("Unknown verb %s.", argv[optind]);
- return -EINVAL;
- }
-
- optind++;
-
- if (optind >= argc) {
- log_error("Missing unit name.");
- return -EINVAL;
- }
-
-
- return 1;
-}
-
-static void install_info_free(InstallInfo *i) {
- assert(i);
-
- free(i->name);
- free(i->path);
- strv_free(i->aliases);
- strv_free(i->wanted_by);
- free(i);
-}
-
-static void install_info_hashmap_free(Hashmap *m) {
- InstallInfo *i;
-
- while ((i = hashmap_steal_first(m)))
- install_info_free(i);
-
- hashmap_free(m);
-}
-
-static bool unit_name_valid(const char *name) {
-
- /* This is a minimal version of unit_name_valid() from
- * unit-name.c */
-
- if (!*name)
- return false;
-
- if (ignore_file(name))
- return false;
-
- return true;
-}
-
-static int install_info_add(const char *name) {
- InstallInfo *i;
- int r;
-
- if (!unit_name_valid(name))
- return -EINVAL;
-
- if (hashmap_get(have_installed, name) ||
- hashmap_get(will_install, name))
- return 0;
-
- if (!(i = new0(InstallInfo, 1))) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (!(i->name = strdup(name))) {
- r = -ENOMEM;
- goto fail;
- }
-
- if ((r = hashmap_put(will_install, i->name, i)) < 0)
- goto fail;
-
- return 0;
-
-fail:
- if (i)
- install_info_free(i);
-
- return r;
-}
-
-static int daemon_reload(DBusConnection *bus) {
- DBusMessage *m = NULL, *reply = NULL;
- DBusError error;
- int r;
-
- assert(bus);
-
- dbus_error_init(&error);
-
- if (arg_verbose)
- log_info("Reloading daemon configuration.");
-
- if (!(m = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "Reload"))) {
- log_error("Could not allocate message.");
- return -ENOMEM;
- }
-
- if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
- log_error("Failed to reload configuration: %s", error.message);
- r = -EIO;
- goto finish;
- }
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return r;
-}
-
-static int install_info_run(DBusConnection *bus, InstallInfo *i, bool enabled) {
- DBusMessage *m = NULL, *reply = NULL;
- DBusError error;
- int r;
- const char *mode = "replace";
-
- assert(bus);
- assert(i);
-
- dbus_error_init(&error);
-
- if (arg_action == ACTION_ENABLE ||
- (arg_action == ACTION_REALIZE && enabled)) {
-
- if (arg_realize == REALIZE_MAYBE) {
- char **k;
- bool yes_please = false;
-
- STRV_FOREACH(k, i->wanted_by) {
- DBusMessageIter sub, iter;
-
- const char *path, *state;
- const char *interface = "org.freedesktop.systemd1.Unit";
- const char *property = "ActiveState";
-
- if (!(m = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "GetUnit"))) {
- log_error("Could not allocate message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, k,
- DBUS_TYPE_INVALID)) {
- log_error("Could not append arguments to message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
- /* Hmm, this unit doesn't exist, let's try the next one */
- dbus_message_unref(m);
- m = NULL;
- continue;
- }
-
- if (!dbus_message_get_args(reply, &error,
- DBUS_TYPE_OBJECT_PATH, &path,
- DBUS_TYPE_INVALID)) {
- log_error("Failed to parse reply: %s", error.message);
- r = -EIO;
- goto finish;
- }
-
- dbus_message_unref(m);
- if (!(m = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- path,
- "org.freedesktop.DBus.Properties",
- "Get"))) {
- log_error("Could not allocate message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &interface,
- DBUS_TYPE_STRING, &property,
- DBUS_TYPE_INVALID)) {
- log_error("Could not append arguments to message.");
- r = -ENOMEM;
- goto finish;
- }
-
- dbus_message_unref(reply);
- if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
- log_error("Failed to issue method call: %s", error.message);
- r = -EIO;
- goto finish;
- }
-
- if (!dbus_message_iter_init(reply, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
- log_error("Failed to parse reply.");
- r = -EIO;
- goto finish;
- }
-
- dbus_message_iter_recurse(&iter, &sub);
-
- if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
- log_error("Failed to parse reply.");
- r = -EIO;
- goto finish;
- }
-
- dbus_message_iter_get_basic(&sub, &state);
-
- dbus_message_unref(m);
- dbus_message_unref(reply);
- m = reply = NULL;
-
- if (streq(state, "active") ||
- startswith(state, "reloading") ||
- startswith(state, "activating")) {
- yes_please = true;
- break;
- }
- }
-
- if (!yes_please) {
- r = 0;
- goto finish;
- }
- }
-
- if (arg_verbose)
- log_info("Restarting %s.", i->name);
-
- if (!(m = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- arg_realize == REALIZE_MINIMAL ? "TryRestartUnit" : "RestartUnit"))) {
- log_error("Could not allocate message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &i->name,
- DBUS_TYPE_STRING, &mode,
- DBUS_TYPE_INVALID)) {
- log_error("Could not append arguments to message.");
- r = -ENOMEM;
- goto finish;
- }
-
-
- } else if (arg_action == ACTION_DISABLE ||
- (arg_action == ACTION_REALIZE && !enabled)) {
-
- if (arg_verbose)
- log_info("Stopping %s.", i->name);
-
- if (!(m = dbus_message_new_method_call(
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "StopUnit"))) {
- log_error("Could not allocate message.");
- r = -ENOMEM;
- goto finish;
- }
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &i->name,
- DBUS_TYPE_STRING, &mode,
- DBUS_TYPE_INVALID)) {
- log_error("Could not append arguments to message.");
- r = -ENOMEM;
- goto finish;
- }
- } else
- assert_not_reached("install_info_run() called but nothing to do?");
-
- if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
- log_error("Failed to realize unit: %s", error.message);
- r = -EIO;
- goto finish;
- }
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
-
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return r;
-}
-
-static int config_parse_also(
- const char *filename,
- unsigned line,
- const char *section,
- const char *lvalue,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- char *w;
- size_t l;
- char *state;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
-
- FOREACH_WORD_QUOTED(w, l, rvalue, state) {
- char *n;
- int r;
-
- if (!(n = strndup(w, l)))
- return -ENOMEM;
-
- r = install_info_add(n);
- free(n);
-
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int mark_symlink_for_removal(const char *p) {
- char *n;
- int r;
-
- assert(p);
- assert(path_is_absolute(p));
-
- if (!remove_symlinks_to)
- return 0;
-
- if (!(n = canonicalize_file_name(p)))
- if (!(n = strdup(p)))
- return -ENOMEM;
-
- path_kill_slashes(n);
-
- if ((r = set_put(remove_symlinks_to, n)) < 0) {
- free(n);
- return r;
- }
-
- return 0;
-}
-
-static int remove_marked_symlinks_fd(int fd, const char *config_path, const char *root, bool *deleted) {
- int r = 0;
- DIR *d;
- struct dirent *de;
-
- assert(fd >= 0);
- assert(root);
- assert(deleted);
-
- if (!(d = fdopendir(fd)))
- return -errno;
-
- rewinddir(d);
-
- while ((de = readdir(d))) {
- bool is_dir = false, is_link = false;
-
- if (ignore_file(de->d_name))
- continue;
-
- if (de->d_type == DT_LNK)
- is_link = true;
- else if (de->d_type == DT_DIR)
- is_dir = true;
- else if (de->d_type == DT_UNKNOWN) {
- struct stat st;
-
- if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
- log_error("Failed to stat %s/%s: %m", root, de->d_name);
-
- if (r == 0)
- r = -errno;
- continue;
- }
-
- is_link = S_ISLNK(st.st_mode);
- is_dir = S_ISDIR(st.st_mode);
- } else
- continue;
-
- if (is_dir) {
- int nfd, q;
- char *p;
-
- if ((nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0) {
- log_error("Failed to open %s/%s: %m", root, de->d_name);
-
- if (r == 0)
- r = -errno;
- continue;
- }
-
- if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
- log_error("Failed to allocate directory string.");
- close_nointr_nofail(nfd);
- r = -ENOMEM;
- break;
- }
-
- q = remove_marked_symlinks_fd(nfd, config_path, p, deleted);
- free(p);
- close_nointr_nofail(nfd);
-
- if (r == 0)
- q = r;
-
- } else if (is_link) {
- char *p, *dest, *c;
- int q;
-
- if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
- log_error("Failed to allocate symlink string.");
- r = -ENOMEM;
- break;
- }
-
- if ((q = readlink_and_make_absolute(p, &dest)) < 0) {
- log_error("Cannot read symlink %s: %s", p, strerror(-q));
- free(p);
-
- if (r == 0)
- r = q;
- continue;
- }
-
- if ((c = canonicalize_file_name(dest))) {
- /* This might fail if the destination
- * is already removed */
-
- free(dest);
- dest = c;
- }
-
- path_kill_slashes(dest);
- if (set_get(remove_symlinks_to, dest)) {
-
- if (arg_verbose)
- log_info("rm '%s'", p);
-
- if (unlink(p) < 0) {
- log_error("Cannot unlink symlink %s: %m", p);
-
- if (r == 0)
- r = -errno;
- } else {
- rmdir_parents(p, config_path);
- path_kill_slashes(p);
-
- if (!set_get(remove_symlinks_to, p)) {
-
- if ((r = mark_symlink_for_removal(p)) < 0) {
- if (r == 0)
- r = q;
- } else
- *deleted = true;
- }
- }
- }
-
- free(p);
- free(dest);
- }
- }
-
- return r;
-}
-
-static int remove_marked_symlinks(const char *config_path) {
- int fd, r = 0;
- bool deleted;
-
- assert(config_path);
-
- if (set_size(remove_symlinks_to) <= 0)
- return 0;
-
- if ((fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0)
- return -errno;
-
- do {
- int q;
- deleted = false;
-
- if ((q = remove_marked_symlinks_fd(fd, config_path, config_path, &deleted)) < 0) {
- if (r == 0)
- r = q;
- }
- } while (deleted);
-
- close_nointr_nofail(fd);
-
- return r;
-}
-
-static int create_symlink(const char *old_path, const char *new_path) {
- int r;
-
- assert(old_path);
- assert(new_path);
-
- if (arg_action == ACTION_ENABLE) {
- char *dest;
-
- mkdir_parents(new_path, 0755);
-
- if (symlink(old_path, new_path) >= 0)
- return 0;
-
- if (errno != EEXIST) {
- log_error("Cannot link %s to %s: %m", old_path, new_path);
- return -errno;
- }
-
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
-
- if (errno == EINVAL) {
- log_error("Cannot link %s to %s, file exists already and is not a symlink.", old_path, new_path);
- return -EEXIST;
- }
-
- log_error("readlink() failed: %s", strerror(-r));
- return r;
- }
-
- if (streq(dest, old_path)) {
- free(dest);
- return 0;
- }
-
- if (!arg_force) {
- log_error("Cannot link %s to %s, symlink exists already and points to %s.", old_path, new_path, dest);
- free(dest);
- return -EEXIST;
- }
-
- free(dest);
- unlink(new_path);
-
- if (arg_verbose)
- log_info("ln -s '%s' '%s'", old_path, new_path);
-
- if (symlink(old_path, new_path) >= 0)
- return 0;
-
- log_error("Cannot link %s to %s: %m", old_path, new_path);
- return -errno;
-
- } else if (arg_action == ACTION_DISABLE) {
- char *dest;
-
- if ((r = mark_symlink_for_removal(old_path)) < 0)
- return r;
-
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
- if (errno == ENOENT)
- return 0;
-
- if (errno == EINVAL) {
- log_warning("File %s not a symlink, ignoring.", old_path);
- return 0;
- }
-
- log_error("readlink() failed: %s", strerror(-r));
- return r;
- }
-
- if (!streq(dest, old_path)) {
- log_warning("File %s not a symlink to %s but points to %s, ignoring.", new_path, old_path, dest);
- free(dest);
- return 0;
- }
-
-
- free(dest);
-
- if ((r = mark_symlink_for_removal(new_path)) < 0)
- return r;
-
- if (arg_verbose)
- log_info("rm '%s'", new_path);
-
- if (unlink(new_path) >= 0)
- return 0;
-
- log_error("Cannot unlink %s: %m", new_path);
- return -errno;
-
- } else if (arg_action == ACTION_TEST || arg_action == ACTION_REALIZE) {
- char *dest;
-
- if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
-
- if (errno == ENOENT || errno == EINVAL)
- return 0;
-
- log_error("readlink() failed: %s", strerror(-r));
- return r;
- }
-
- if (streq(dest, old_path)) {
- free(dest);
- return 1;
- }
-
- return 0;
- }
-
- assert_not_reached("Unknown action.");
-}
-
-static int install_info_symlink_alias(InstallInfo *i, const char *config_path) {
- char **s;
- char *alias_path = NULL;
- int r;
-
- assert(i);
-
- STRV_FOREACH(s, i->aliases) {
-
- if (!unit_name_valid(*s)) {
- log_error("Invalid name %s.", *s);
- r = -EINVAL;
- goto finish;
- }
-
- free(alias_path);
- if (!(alias_path = path_make_absolute(*s, config_path))) {
- log_error("Out of memory");
- r = -ENOMEM;
- goto finish;
- }
-
- if ((r = create_symlink(i->path, alias_path)) != 0)
- goto finish;
-
- if (arg_action == ACTION_DISABLE)
- rmdir_parents(alias_path, config_path);
- }
-
- r = 0;
-
-finish:
- free(alias_path);
-
- return r;
-}
-
-static int install_info_symlink_wants(InstallInfo *i, const char *config_path) {
- char **s;
- char *alias_path = NULL;
- int r;
-
- assert(i);
-
- STRV_FOREACH(s, i->wanted_by) {
- if (!unit_name_valid(*s)) {
- log_error("Invalid name %s.", *s);
- r = -EINVAL;
- goto finish;
- }
-
- free(alias_path);
- alias_path = NULL;
-
- if (asprintf(&alias_path, "%s/%s.wants/%s", config_path, *s, i->name) < 0) {
- log_error("Out of memory");
- r = -ENOMEM;
- goto finish;
- }
-
- if ((r = create_symlink(i->path, alias_path)) != 0)
- goto finish;
-
- if (arg_action == ACTION_DISABLE)
- rmdir_parents(alias_path, config_path);
- }
-
- r = 0;
-
-finish:
- free(alias_path);
-
- return r;
-}
-
-static int install_info_apply(LookupPaths *paths, InstallInfo *i, const char *config_path) {
-
- const ConfigItem items[] = {
- { "Alias", config_parse_strv, &i->aliases, "Install" },
- { "WantedBy", config_parse_strv, &i->wanted_by, "Install" },
- { "Also", config_parse_also, NULL, "Install" },
-
- { NULL, NULL, NULL, NULL }
- };
-
- char **p;
- char *filename = NULL;
- FILE *f = NULL;
- int r;
-
- assert(paths);
- assert(i);
-
- STRV_FOREACH(p, paths->unit_path) {
- int fd;
-
- if (!(filename = path_make_absolute(i->name, *p))) {
- log_error("Out of memory");
- return -ENOMEM;
- }
-
- /* Ensure that we don't follow symlinks */
- if ((fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NOCTTY)) >= 0)
- if ((f = fdopen(fd, "re")))
- break;
-
- if (errno == ELOOP) {
- log_error("Refusing to operate on symlinks, please pass unit names or absolute paths to unit files.");
- free(filename);
- return -errno;
- }
-
- if (errno != ENOENT) {
- log_error("Failed to open %s: %m", filename);
- free(filename);
- return -errno;
- }
-
- free(filename);
- filename = NULL;
- }
-
- if (!f) {
- log_error("Couldn't find %s.", i->name);
- return -ENOENT;
- }
-
- i->path = filename;
-
- if ((r = config_parse(filename, f, NULL, items, true, i)) < 0) {
- fclose(f);
- return r;
- }
-
- fclose(f);
-
- if ((r = install_info_symlink_alias(i, config_path)) != 0)
- return r;
-
- if ((r = install_info_symlink_wants(i, config_path)) != 0)
- return r;
-
- if ((r = mark_symlink_for_removal(filename)) < 0)
- return r;
-
- if ((r = remove_marked_symlinks(config_path)) < 0)
- return r;
-
- return 0;
-}
-
-static char *get_config_path(void) {
-
- switch (arg_where) {
-
- case WHERE_SYSTEM:
- return strdup(SYSTEM_CONFIG_UNIT_PATH);
-
- case WHERE_GLOBAL:
- return strdup(SESSION_CONFIG_UNIT_PATH);
-
- case WHERE_SESSION: {
- char *p;
-
- if (session_config_home(&p) < 0)
- return NULL;
-
- return p;
- }
-
- default:
- assert_not_reached("Unknown config path.");
- }
-}
-
-static int do_realize(bool enabled) {
- DBusConnection *bus = NULL;
- DBusError error;
- int r, q;
- Iterator i;
- InstallInfo *j;
-
- dbus_error_init(&error);
-
- if (arg_realize == REALIZE_NO)
- return 0;
-
- if (arg_where == WHERE_GLOBAL) {
- log_warning("Warning: --realize has no effect with --global.");
- return 0;
- }
-
- if (arg_action == ACTION_TEST) {
- log_warning("Warning: --realize has no effect with test.");
- return 0;
- }
-
- if (arg_where == WHERE_SYSTEM && sd_booted() <= 0) {
- log_info("systemd is not running, --realize has no effect.");
- return 0;
- }
-
- if (arg_where == WHERE_SYSTEM && running_in_chroot() > 0) {
- log_info("Running in a chroot() environment, --realize has no effect.");
- return 0;
- }
-
- if ((r = bus_connect(arg_where == WHERE_SESSION ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, NULL, &error)) < 0) {
- log_error("Failed to get D-Bus connection: %s", error.message);
- goto finish;
- }
-
- r = 0;
-
- if (arg_action == ACTION_ENABLE || arg_action == ACTION_REALIZE)
- if ((r = daemon_reload(bus)) < 0)
- goto finish;
-
- if (arg_realize != REALIZE_RELOAD) {
- HASHMAP_FOREACH(j, have_installed, i)
- if ((q = install_info_run(bus, j, enabled)) < 0)
- r = q;
- }
-
- if (arg_action == ACTION_DISABLE)
- if ((q = daemon_reload(bus)) < 0)
- r = q;
-
-finish:
- if (bus) {
- dbus_connection_close(bus);
- dbus_connection_unref(bus);
- }
-
- dbus_error_free(&error);
-
- dbus_shutdown();
- return r;
-}
-
-int main(int argc, char *argv[]) {
- int r, retval = 1, j;
- LookupPaths paths;
- InstallInfo *i;
- char *config_path = NULL;
-
- zero(paths);
-
- log_parse_environment();
-
- if ((r = parse_argv(argc, argv)) < 0)
- goto finish;
- else if (r == 0) {
- retval = 0;
- goto finish;
- }
-
- if ((r = lookup_paths_init(&paths, arg_where == WHERE_SYSTEM ? MANAGER_SYSTEM : MANAGER_SESSION)) < 0) {
- log_error("Failed to determine lookup paths: %s", strerror(-r));
- goto finish;
- }
-
- if (!(config_path = get_config_path())) {
- log_error("Failed to determine config path");
- goto finish;
- }
-
- will_install = hashmap_new(string_hash_func, string_compare_func);
- have_installed = hashmap_new(string_hash_func, string_compare_func);
-
- if (!will_install || !have_installed) {
- log_error("Failed to allocate unit sets.");
- goto finish;
- }
-
- if (arg_all)
- if (!(remove_symlinks_to = set_new(string_hash_func, string_compare_func))) {
- log_error("Failed to allocate symlink sets.");
- goto finish;
- }
-
- for (j = optind; j < argc; j++)
- if ((r = install_info_add(argv[j])) < 0)
- goto finish;
-
-
- while ((i = hashmap_first(will_install))) {
- assert_se(hashmap_move_one(have_installed, will_install, i->name) == 0);
-
- if ((r = install_info_apply(&paths, i, config_path)) != 0) {
-
- if (r < 0)
- goto finish;
-
- /* In test mode and found something */
- retval = 0;
- break;
- }
- }
-
- if (do_realize(!retval) < 0)
- goto finish;
-
-finish:
- install_info_hashmap_free(will_install);
- install_info_hashmap_free(have_installed);
-
- set_free_free(remove_symlinks_to);
-
- lookup_paths_free(&paths);
-
- free(config_path);
-
- return retval;
-}
~ianmdlvl / elogind.git / commitdiff