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-rw-r--r--src/systemctl/systemctl-sysv-compat.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-sysv-compat.c b/src/systemctl/systemctl-sysv-compat.c
new file mode 100644
index 0000000..a78fa1e
--- /dev/null
+++ b/src/systemctl/systemctl-sysv-compat.c
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "env-util.h"
+#include "fd-util.h"
+#include "initreq.h"
+#include "install.h"
+#include "io-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "strv.h"
+#include "systemctl-sysv-compat.h"
+#include "systemctl.h"
+
+int talk_initctl(char rl) {
+#if HAVE_SYSV_COMPAT
+ struct init_request request;
+ _cleanup_close_ int fd = -1;
+ const char *p;
+ int r;
+
+ /* Try to switch to the specified SysV runlevel. Returns == 0 if the operation does not apply on this
+ * system, and > 0 on success. */
+
+ if (rl == 0)
+ return 0;
+
+ FOREACH_STRING(p, "/run/initctl", "/dev/initctl") {
+ fd = open(p, O_WRONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY);
+ if (fd >= 0 || errno != ENOENT)
+ break;
+ }
+ if (fd < 0) {
+ if (errno == ENOENT)
+ return 0;
+
+ return log_error_errno(errno, "Failed to open initctl fifo: %m");
+ }
+
+ request = (struct init_request) {
+ .magic = INIT_MAGIC,
+ .sleeptime = 0,
+ .cmd = INIT_CMD_RUNLVL,
+ .runlevel = rl,
+ };
+
+ r = loop_write(fd, &request, sizeof(request), false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to write to %s: %m", p);
+
+ return 1;
+#else
+ return -EOPNOTSUPP;
+#endif
+}
+
+int parse_shutdown_time_spec(const char *t, usec_t *ret) {
+ assert(t);
+ assert(ret);
+
+ if (streq(t, "now"))
+ *ret = 0;
+ else if (!strchr(t, ':')) {
+ uint64_t u;
+
+ if (safe_atou64(t, &u) < 0)
+ return -EINVAL;
+
+ *ret = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
+ } else {
+ char *e = NULL;
+ long hour, minute;
+ struct tm tm = {};
+ time_t s;
+ usec_t n;
+
+ errno = 0;
+ hour = strtol(t, &e, 10);
+ if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
+ return -EINVAL;
+
+ minute = strtol(e+1, &e, 10);
+ if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
+ return -EINVAL;
+
+ n = now(CLOCK_REALTIME);
+ s = (time_t) (n / USEC_PER_SEC);
+
+ assert_se(localtime_r(&s, &tm));
+
+ tm.tm_hour = (int) hour;
+ tm.tm_min = (int) minute;
+ tm.tm_sec = 0;
+
+ s = mktime(&tm);
+ assert(s >= 0);
+
+ *ret = (usec_t) s * USEC_PER_SEC;
+
+ while (*ret <= n)
+ *ret += USEC_PER_DAY;
+ }
+
+ return 0;
+}
+
+int enable_sysv_units(const char *verb, char **args) {
+ int r = 0;
+
+#if HAVE_SYSV_COMPAT
+ _cleanup_(lookup_paths_free) LookupPaths paths = {};
+ unsigned f = 0;
+
+ /* Processes all SysV units, and reshuffles the array so that afterwards only the native units remain */
+
+ if (arg_scope != UNIT_FILE_SYSTEM)
+ return 0;
+
+ if (getenv_bool("SYSTEMCTL_SKIP_SYSV") > 0)
+ return 0;
+
+ if (!STR_IN_SET(verb,
+ "enable",
+ "disable",
+ "is-enabled"))
+ return 0;
+
+ r = lookup_paths_init(&paths, arg_scope, LOOKUP_PATHS_EXCLUDE_GENERATED, arg_root);
+ if (r < 0)
+ return r;
+
+ r = 0;
+ while (args[f]) {
+
+ const char *argv[] = {
+ ROOTLIBEXECDIR "/systemd-sysv-install",
+ NULL, /* --root= */
+ NULL, /* verb */
+ NULL, /* service */
+ NULL,
+ };
+
+ _cleanup_free_ char *p = NULL, *q = NULL, *l = NULL, *v = NULL;
+ bool found_native = false, found_sysv;
+ const char *name;
+ unsigned c = 1;
+ pid_t pid;
+ int j;
+
+ name = args[f++];
+
+ if (!endswith(name, ".service"))
+ continue;
+
+ if (path_is_absolute(name))
+ continue;
+
+ j = unit_file_exists(arg_scope, &paths, name);
+ if (j < 0 && !IN_SET(j, -ELOOP, -ERFKILL, -EADDRNOTAVAIL))
+ return log_error_errno(j, "Failed to look up unit file state: %m");
+ found_native = j != 0;
+
+ /* If we have both a native unit and a SysV script, enable/disable them both (below); for
+ * is-enabled, prefer the native unit */
+ if (found_native && streq(verb, "is-enabled"))
+ continue;
+
+ p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name);
+ if (!p)
+ return log_oom();
+
+ p[strlen(p) - STRLEN(".service")] = 0;
+ found_sysv = access(p, F_OK) >= 0;
+ if (!found_sysv)
+ continue;
+
+ if (!arg_quiet) {
+ if (found_native)
+ log_info("Synchronizing state of %s with SysV service script with %s.", name, argv[0]);
+ else
+ log_info("%s is not a native service, redirecting to systemd-sysv-install.", name);
+ }
+
+ if (!isempty(arg_root)) {
+ q = strjoin("--root=", arg_root);
+ if (!q)
+ return log_oom();
+
+ argv[c++] = q;
+ }
+
+ /* Let's copy the verb, since it's still pointing directly into the original argv[] array we
+ * got passed, but safe_fork() is likely going to rewrite that for the new child */
+ v = strdup(verb);
+ if (!v)
+ return log_oom();
+
+ argv[c++] = v;
+ argv[c++] = basename(p);
+ argv[c] = NULL;
+
+ l = strv_join((char**)argv, " ");
+ if (!l)
+ return log_oom();
+
+ if (!arg_quiet)
+ log_info("Executing: %s", l);
+
+ j = safe_fork("(sysv-install)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_LOG, &pid);
+ if (j < 0)
+ return j;
+ if (j == 0) {
+ /* Child */
+ execv(argv[0], (char**) argv);
+ log_error_errno(errno, "Failed to execute %s: %m", argv[0]);
+ _exit(EXIT_FAILURE);
+ }
+
+ j = wait_for_terminate_and_check("sysv-install", pid, WAIT_LOG_ABNORMAL);
+ if (j < 0)
+ return j;
+ if (streq(verb, "is-enabled")) {
+ if (j == EXIT_SUCCESS) {
+ if (!arg_quiet)
+ puts("enabled");
+ r = 1;
+ } else {
+ if (!arg_quiet)
+ puts("disabled");
+ }
+
+ } else if (j != EXIT_SUCCESS)
+ return -EBADE; /* We don't warn here, under the assumption the script already showed an explanation */
+
+ if (found_native)
+ continue;
+
+ /* Remove this entry, so that we don't try enabling it as native unit */
+ assert(f > 0);
+ f--;
+ assert(args[f] == name);
+ strv_remove(args + f, name);
+ }
+
+#endif
+ return r;
+}
+
+int action_to_runlevel(void) {
+#if HAVE_SYSV_COMPAT
+ static const char table[_ACTION_MAX] = {
+ [ACTION_HALT] = '0',
+ [ACTION_POWEROFF] = '0',
+ [ACTION_REBOOT] = '6',
+ [ACTION_RUNLEVEL2] = '2',
+ [ACTION_RUNLEVEL3] = '3',
+ [ACTION_RUNLEVEL4] = '4',
+ [ACTION_RUNLEVEL5] = '5',
+ [ACTION_RESCUE] = '1'
+ };
+
+ assert(arg_action >= 0 && arg_action < _ACTION_MAX);
+ return table[arg_action];
+#else
+ return -EOPNOTSUPP;
+#endif
+}