Kill several SysV compat functionalities (v258) (#38178)

src/shared/initreq.h

@@ -1,59 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.0-or-later */
-/*
- * Copyright (C) 1995-2004 Miquel van Smoorenburg
- * Version:     @(#)initreq.h  1.28  31-Mar-2004 MvS
- */
-
-#pragma once
-
-#include "forward.h"
-
-#if defined(__FreeBSD_kernel__)
-#  define INIT_FIFO  "/etc/.initctl"
-#else
-#  define INIT_FIFO  "/dev/initctl"
-#endif
-
-#define INIT_MAGIC 0x03091969
-#define INIT_CMD_START		0
-#define INIT_CMD_RUNLVL		1
-#define INIT_CMD_POWERFAIL	2
-#define INIT_CMD_POWERFAILNOW	3
-#define INIT_CMD_POWEROK	4
-#define INIT_CMD_BSD		5
-#define INIT_CMD_SETENV		6
-#define INIT_CMD_UNSETENV	7
-
-#define INIT_CMD_CHANGECONS	12345
-/*
- *	This is what BSD 4.4 uses when talking to init.
- *	Linux doesn't use this right now.
- */
-struct init_request_bsd {
-        char	gen_id[8];		/* Beats me.. telnetd uses "fe" */
-        char	tty_id[16];		/* Tty name minus /dev/tty      */
-        char	host[HOST_NAME_MAX];	/* Hostname                     */
-        char	term_type[16];		/* Terminal type                */
-        int	signal;			/* Signal to send               */
-        int	pid;			/* Process to send to           */
-        char	exec_name[128];	        /* Program to execute           */
-        char	reserved[128];		/* For future expansion.        */
-};
-
-/*
- *	Because of legacy interfaces, "runlevel" and "sleeptime"
- *	aren't in a separate struct in the union.
- *
- *	The weird sizes are because init expects the whole
- *	struct to be 384 bytes.
- */
-struct init_request {
-        int	magic;			/* Magic number                 */
-        int	cmd;			/* What kind of request         */
-        int	runlevel;		/* Runlevel to change to        */
-        int	sleeptime;		/* Time between TERM and KILL   */
-        union {
-                struct init_request_bsd	bsd;
-                char			data[368];
-        } i;
-};

src/shared/utmp-wtmp.c

@@ -11,44 +11,6 @@
 #include "time-util.h"
 #include "utmp-wtmp.h"
 
-int utmp_get_runlevel(int *runlevel, int *previous) {
-        _unused_ _cleanup_(utxent_cleanup) bool utmpx = false;
-        struct utmpx *found, lookup = { .ut_type = RUN_LVL };
-        const char *e;
-
-        assert(runlevel);
-
-        /* If these values are set in the environment this takes
-         * precedence. Presumably, sysvinit does this to work around a
-         * race condition that would otherwise exist where we'd always
-         * go to disk and hence might read runlevel data that might be
-         * very new and not apply to the current script being executed. */
-
-        e = getenv("RUNLEVEL");
-        if (!isempty(e)) {
-                *runlevel = e[0];
-                if (previous)
-                        *previous = 0;
-
-                return 0;
-        }
-
-        if (utmpxname(UTMPX_FILE) < 0)
-                return -errno;
-
-        utmpx = utxent_start();
-
-        found = getutxid(&lookup);
-        if (!found)
-                return -errno;
-
-        *runlevel = found->ut_pid & 0xFF;
-        if (previous)
-                *previous = (found->ut_pid >> 8) & 0xFF;
-
-        return 0;
-}
-
 static void init_timestamp(struct utmpx *store, usec_t t) {
         assert(store);
 
@@ -237,33 +199,3 @@ int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
 
         return write_utmp_wtmp(&store, &store_wtmp);
 }
-
-int utmp_put_runlevel(int runlevel, int previous) {
-        struct utmpx store = {};
-        int r;
-
-        assert(runlevel > 0);
-
-        if (previous <= 0) {
-                /* Find the old runlevel automatically */
-
-                r = utmp_get_runlevel(&previous, NULL);
-                if (r < 0) {
-                        if (r != -ESRCH)
-                                return r;
-
-                        previous = 0;
-                }
-        }
-
-        if (previous == runlevel)
-                return 0;
-
-        init_entry(&store, 0);
-
-        store.ut_type = RUN_LVL;
-        store.ut_pid = (runlevel & 0xFF) | ((previous & 0xFF) << 8);
-        strncpy(store.ut_user, "runlevel", sizeof(store.ut_user));
-
-        return write_entry_both(&store);
-}

src/shared/utmp-wtmp.h

@@ -6,11 +6,8 @@
 #if ENABLE_UTMP
 #include <utmpx.h>
 
-int utmp_get_runlevel(int *runlevel, int *previous);
-
 int utmp_put_shutdown(void);
 int utmp_put_reboot(usec_t timestamp);
-int utmp_put_runlevel(int runlevel, int previous);
 
 int utmp_put_dead_process(const char *id, pid_t pid, int code, int status);
 int utmp_put_init_process(const char *id, pid_t pid, pid_t sid, const char *line, int ut_type, const char *user);
@@ -27,18 +24,12 @@ static inline void utxent_cleanup(bool *initialized) {
 
 #else /* ENABLE_UTMP */
 
-static inline int utmp_get_runlevel(int *runlevel, int *previous) {
-        return -ESRCH;
-}
 static inline int utmp_put_shutdown(void) {
         return 0;
 }
 static inline int utmp_put_reboot(usec_t timestamp) {
         return 0;
 }
-static inline int utmp_put_runlevel(int runlevel, int previous) {
-        return 0;
-}
 static inline int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
         return 0;
 }