-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2014 Zbigniew Jędrzejewski-Szmek
-
- 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 "manager.h"
-#include "bus-util.h"
-#include "log.h"
-#include "strv.h"
-#include "pager.h"
-#include "analyze-verify.h"
-
-static int generate_path(char **var, char **filenames) {
- char **filename;
-
- _cleanup_strv_free_ char **ans = NULL;
- int r;
-
- STRV_FOREACH(filename, filenames) {
- char *t;
-
- t = dirname_malloc(*filename);
- if (!t)
- return -ENOMEM;
-
- r = strv_consume(&ans, t);
- if (r < 0)
- return r;
- }
-
- assert_se(strv_uniq(ans));
-
- r = strv_extend(&ans, "");
- if (r < 0)
- return r;
-
- *var = strv_join(ans, ":");
- if (!*var)
- return -ENOMEM;
-
- return 0;
-}
-
-static int verify_socket(Unit *u) {
- int r;
-
- assert(u);
-
- if (u->type != UNIT_SOCKET)
- return 0;
-
- /* Cannot run this without the service being around */
-
- /* This makes sure instance is created if necessary. */
- r = socket_instantiate_service(SOCKET(u));
- if (r < 0) {
- log_unit_error(u->id, "Socket %s cannot be started, failed to create instance.",
- u->id);
- return r;
- }
-
- /* This checks both type of sockets */
- if (UNIT_ISSET(SOCKET(u)->service)) {
- Service *service;
-
- service = SERVICE(UNIT_DEREF(SOCKET(u)->service));
- log_unit_debug(u->id, "%s uses %s", u->id, UNIT(service)->id);
-
- if (UNIT(service)->load_state != UNIT_LOADED) {
- log_unit_error(u->id, "Service %s not loaded, %s cannot be started.",
- UNIT(service)->id, u->id);
- return -ENOENT;
- }
- }
-
- return 0;
-}
-
-static int verify_executable(Unit *u, ExecCommand *exec) {
- if (exec == NULL)
- return 0;
-
- if (access(exec->path, X_OK) < 0) {
- log_unit_error(u->id, "%s: command %s is not executable: %m",
- u->id, exec->path);
- return -errno;
- }
-
- return 0;
-}
-
-static int verify_executables(Unit *u) {
- ExecCommand *exec;
- int r = 0, k;
- unsigned i;
-
- assert(u);
-
- exec = u->type == UNIT_SOCKET ? SOCKET(u)->control_command :
- u->type == UNIT_MOUNT ? MOUNT(u)->control_command :
- u->type == UNIT_SWAP ? SWAP(u)->control_command : NULL;
- k = verify_executable(u, exec);
- if (k < 0 && r == 0)
- r = k;
-
- if (u->type == UNIT_SERVICE)
- for (i = 0; i < ELEMENTSOF(SERVICE(u)->exec_command); i++) {
- k = verify_executable(u, SERVICE(u)->exec_command[i]);
- if (k < 0 && r == 0)
- r = k;
- }
-
- if (u->type == UNIT_SOCKET)
- for (i = 0; i < ELEMENTSOF(SOCKET(u)->exec_command); i++) {
- k = verify_executable(u, SOCKET(u)->exec_command[i]);
- if (k < 0 && r == 0)
- r = k;
- }
-
- return r;
-}
-
-static int verify_documentation(Unit *u, bool check_man) {
- char **p;
- int r = 0, k;
-
- STRV_FOREACH(p, u->documentation) {
- log_unit_debug(u->id, "%s: found documentation item %s.", u->id, *p);
- if (check_man && startswith(*p, "man:")) {
- k = show_man_page(*p + 4, true);
- if (k != 0) {
- if (k < 0)
- log_unit_error(u->id, "%s: can't show %s: %s",
- u->id, *p, strerror(-r));
- else {
- log_unit_error(u->id, "%s: man %s command failed with code %d",
- u->id, *p + 4, k);
- k = -ENOEXEC;
- }
- if (r == 0)
- r = k;
- }
- }
- }
-
- /* Check remote URLs? */
-
- return r;
-}
-
-static int verify_unit(Unit *u, bool check_man) {
- _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
- Job *j;
- int r, k;
-
- assert(u);
-
- if (log_get_max_level() >= LOG_DEBUG)
- unit_dump(u, stdout, "\t");
-
- log_unit_debug(u->id, "Creating %s/start job", u->id);
- r = manager_add_job(u->manager, JOB_START, u, JOB_REPLACE, false, &err, &j);
- if (sd_bus_error_is_set(&err))
- log_unit_error(u->id, "Error: %s: %s",
- err.name, err.message);
- if (r < 0)
- log_unit_error(u->id, "Failed to create %s/start: %s",
- u->id, strerror(-r));
-
- k = verify_socket(u);
- if (k < 0 && r == 0)
- r = k;
-
- k = verify_executables(u);
- if (k < 0 && r == 0)
- r = k;
-
- k = verify_documentation(u, check_man);
- if (k < 0 && r == 0)
- r = k;
-
- return r;
-}
-
-int verify_units(char **filenames, SystemdRunningAs running_as, bool check_man) {
- _cleanup_bus_error_free_ sd_bus_error err = SD_BUS_ERROR_NULL;
- Manager *m = NULL;
- FILE *serial = NULL;
- FDSet *fdset = NULL;
-
- _cleanup_free_ char *var = NULL;
-
- char **filename;
- int r = 0, k;
-
- Unit *units[strv_length(filenames)];
- int i, count = 0;
-
- if (strv_isempty(filenames))
- return 0;
-
- /* set the path */
- r = generate_path(&var, filenames);
- if (r < 0)
- return log_error_errno(r, "Failed to generate unit load path: %m");
-
- assert_se(set_unit_path(var) >= 0);
-
- r = manager_new(running_as, true, &m);
- if (r < 0)
- return log_error_errno(r, "Failed to initalize manager: %m");
-
- log_debug("Starting manager...");
-
- r = manager_startup(m, serial, fdset);
- if (r < 0) {
- log_error_errno(r, "Failed to start manager: %m");
- goto finish;
- }
-
- manager_clear_jobs(m);
-
- log_debug("Loading remaining units from the command line...");
-
- STRV_FOREACH(filename, filenames) {
- char fname[UNIT_NAME_MAX + 2 + 1] = "./";
-
- log_debug("Handling %s...", *filename);
-
- /* manager_load_unit does not like pure basenames, so prepend
- * the local directory, but only for valid names. manager_load_unit
- * will print the error for other ones. */
- if (!strchr(*filename, '/') && strlen(*filename) <= UNIT_NAME_MAX) {
- strncat(fname + 2, *filename, UNIT_NAME_MAX);
- k = manager_load_unit(m, NULL, fname, &err, &units[count]);
- } else
- k = manager_load_unit(m, NULL, *filename, &err, &units[count]);
- if (k < 0) {
- log_error_errno(k, "Failed to load %s: %m", *filename);
- if (r == 0)
- r = k;
- } else
- count ++;
- }
-
- for (i = 0; i < count; i++) {
- k = verify_unit(units[i], check_man);
- if (k < 0 && r == 0)
- r = k;
- }
-
-finish:
- manager_free(m);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff