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Systemd/src/install.c

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/*-*- 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_MAYBE;
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_MAYBE;
} 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;
}
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