sbin/svc/svc.h

   1 /*
   2  * Copyright (c) 2014 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <sys/procctl.h>
  38 #include <sys/stat.h>
  39 #include <sys/time.h>
  40 #include <sys/socket.h>
  41 #include <sys/wait.h>
  42 #include <sys/un.h>
  43 #include <sys/ttycom.h>
  44 #include <sys/devfs.h>
  45 #include <sys/mount.h>
  46 #include <sys/jail.h>
  47 #include <fcntl.h>
  48 #include <stdio.h>
  49 #include <stdarg.h>
  50 #include <stdlib.h>
  51 #include <stddef.h>
  52 #include <unistd.h>
  53 #include <string.h>
  54 #include <signal.h>
  55 #include <dirent.h>
  56 #include <assert.h>
  57 #include <errno.h>
  58 #include <ctype.h>
  59 #include <pwd.h>
  60 #include <grp.h>
  61 #include <pthread.h>
  62
  63 typedef struct SvcCommand {
  64         int     mountdev : 1;
  65         int     cmdline : 1;
  66         int     foreground : 1;
  67         int     restart_some : 1;
  68         int     restart_all : 1;
  69         int     exit_mode : 1;
  70         int     sync_mode : 1;
  71         int     tail_mode : 3;
  72         int     jail_clean : 1;
  73         int     uid_mode : 1;
  74         int     gid_mode : 1;
  75         int     manual_stop : 1;
  76         int     empty_label : 1;        /* label not specified (vs 'all') */
  77         int     commanded : 1;          /* command by system operator */
  78         int     force_remove_files : 1;
  79         FILE    *fp;                    /* nominal output */
  80         char    *piddir;
  81         char    *rootdir;
  82         char    *jaildir;
  83         char    *logfile;
  84         char    *proctitle;
  85         char    *directive;
  86         char    *label;
  87         char    **ext_av;
  88         int     ext_ac;
  89         char    **orig_av;
  90         int     orig_ac;
  91         int     restart_timo;
  92         int     termkill_timo;
  93         int     debug;
  94         int     restart_per;
  95         int     restart_count;
  96         struct passwd pwent;
  97         struct group grent;
  98         gid_t   groups[NGROUPS];
  99         int     ngroups;
 100
 101         pthread_cond_t logcond;         /* wait for activity */
 102         char    logbuf[8192];           /* must be power of 2 >= 2048 */
 103         int     logwindex;
 104         int     logcount;
 105         int     logfds[2];              /* logfile pipe descriptors */
 106         int     logfd;                  /* logfile file descriptor */
 107 } command_t;
 108
 109 typedef enum {
 110         RS_STOPPED,     /* service died or stopped */
 111         RS_STARTED,     /* service running */
 112         RS_STOPPING1,   /* fresh pid to stop */
 113         RS_STOPPING2,   /* TERM sent */
 114         RS_STOPPING3,   /* KILL sent */
 115 } runstate_t;
 116
 117 #define LOGCHUNK        1024
 118
 119 extern pthread_mutex_t serial_mtx;
 120
 121 int process_cmd(command_t *cmd, FILE *fp, int ac, char **av);
 122 int execute_cmd(command_t *cmd);
 123 void free_cmd(command_t *cmd);
 124
 125 void sfree(char **strp);
 126 void sreplace(char **strp, const char *orig);
 127 void sdup(char **strp);
 128 void afree(char ***aryp);
 129 void adup(char ***aryp);
 130 int setup_pid_and_socket(command_t *cmd, int *lfdp, int *pfdp);
 131 void remove_pid_and_socket(command_t *cmd, const char *label);
 132
 133 void remote_execute(command_t *cmd, const char *label);
 134 void remote_listener(command_t *cmd, int lfd);
 135 int remote_wait(void);
 136
 137 int execute_init(command_t *cmd);
 138 int execute_start(command_t *cmd);
 139 int execute_stop(command_t *cmd);
 140 int execute_restart(command_t *cmd);
 141 int execute_exit(command_t *cmd);
 142 int execute_list(command_t *cmd);
 143 int execute_status(command_t *cmd);
 144 int execute_log(command_t *cmd);
 145 int execute_logfile(command_t *cmd);
 146 int execute_help(command_t *cmd);