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annotate toys/pending/init.c @ 1298:c25ee9918e65 draft

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First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
author Rob Landley <rob@landley.net>
date Wed, 21 May 2014 07:09:09 -0500
parents 9e105bab92e5
children c0c91437138b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* init.c - init program.
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2 *
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3 * Copyright 2012 Harvind Singh <harvindsingh1981@gmail.com>
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4 * Copyright 2013 Kyungwan Han <asura321@gmail.com>
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5 *
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6 * No Standard
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7
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8 USE_INIT(NEWTOY(init, "", TOYFLAG_SBIN))
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9
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10 config INIT
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11 bool "init"
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12 default n
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13 help
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14 usage: init
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15
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16 System V style init.
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17
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
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18 First program to run (as PID 1) when the system comes up, reading
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19 /etc/inittab to determine actions.
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20 */
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21
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22 #include "toys.h"
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23 #include <sys/reboot.h>
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24
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25 struct action_list_seed {
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26 struct action_list_seed *next;
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27 pid_t pid;
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28 uint8_t action;
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29 char *terminal_name;
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30 char *command;
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31 } *action_list_pointer = NULL;
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32 int caught_signal;
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33
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34 //INITTAB action defination
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35 #define SYSINIT 0x01
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36 #define WAIT 0x02
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37 #define ONCE 0x04
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38 #define RESPAWN 0x08
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39 #define ASKFIRST 0x10
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40 #define CTRLALTDEL 0x20
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41 #define SHUTDOWN 0x40
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42 #define RESTART 0x80
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43
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44 static void initialize_console(void)
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45 {
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46 int fd;
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47 char *p = getenv("CONSOLE");
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48
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49 if (!p) p = getenv("console");
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50 if (!p) {
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51 fd = open("/dev/null", O_RDWR);
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52 if (fd >= 0) {
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53 while (fd < 2) fd = dup(fd);
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54 while (fd > 2) close(fd--);
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55 }
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56 } else {
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57 fd = open(p, O_RDWR | O_NONBLOCK | O_NOCTTY);
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58 if (fd < 0) printf("Unable to open console %s\n",p);
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59 else {
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60 dup2(fd,0);
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61 dup2(fd,1);
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62 dup2(fd,2);
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63 }
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64 }
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65
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66 if (!getenv("TERM")) putenv("TERM=linux");
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67 }
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68
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69 static void reset_term(int fd)
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70 {
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71 struct termios terminal;
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72
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73 tcgetattr(fd, &terminal);
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74 terminal.c_cc[VINTR] = 3; //ctrl-c
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75 terminal.c_cc[VQUIT] = 28; /*ctrl-\*/
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76 terminal.c_cc[VERASE] = 127; //ctrl-?
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77 terminal.c_cc[VKILL] = 21; //ctrl-u
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78 terminal.c_cc[VEOF] = 4; //ctrl-d
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79 terminal.c_cc[VSTART] = 17; //ctrl-q
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80 terminal.c_cc[VSTOP] = 19; //ctrl-s
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81 terminal.c_cc[VSUSP] = 26; //ctrl-z
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82
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83 terminal.c_line = 0;
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84 terminal.c_cflag &= CRTSCTS|PARODD|PARENB|CSTOPB|CSIZE|CBAUDEX|CBAUD;
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85 terminal.c_cflag |= CLOCAL|HUPCL|CREAD;
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87 //enable start/stop input and output control + map CR to NL on input
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88 terminal.c_iflag = IXON|IXOFF|ICRNL;
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89
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90 //Map NL to CR-NL on output
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91 terminal.c_oflag = ONLCR|OPOST;
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92 terminal.c_lflag = IEXTEN|ECHOKE|ECHOCTL|ECHOK|ECHOE|ECHO|ICANON|ISIG;
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93 tcsetattr(fd, TCSANOW, &terminal);
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94 }
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95
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96 static void add_new_action(uint8_t action,char *command,char *term)
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97 {
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98 struct action_list_seed *x,**y;
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99
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100 y = &action_list_pointer;
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101 x = *y;
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102 while (x) {
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103 if (!(strcmp(x->command, command)) && !(strcmp(x->terminal_name, term))) {
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104 *y = x->next; //remove from the list
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105 while(*y) y = &(*y)->next; //traverse through list till end
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106 x->next = NULL;
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107 break;
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108 }
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109 y = &(x)->next;
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110 x = *y;
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111 }
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112
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113 //create a new node
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114 if (!x) {
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115 x = xzalloc(sizeof(*x));
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116 x->command = xstrdup(command);
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117 x->terminal_name = xstrdup(term);
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118 }
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119 x->action = action;
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120 *y = x;
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121 }
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122
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123 static void inittab_parsing(void)
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124 {
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125 int i, fd, line_number = 0, token_count = 0;
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126 char *p, *q, *extracted_token, *tty_name = NULL, *command = NULL, *tmp;
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127 uint8_t action = 0;
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128 char *act_name = "sysinit\0wait\0once\0respawn\0askfirst\0ctrlaltdel\0"
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parents:
diff changeset
129 "shutdown\0restart\0";
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
130
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
131 fd = open("/etc/inittab", O_RDONLY);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
132 if (fd < 0) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
133 error_msg("Unable to open /etc/inittab. Using Default inittab");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
134 add_new_action(SYSINIT, "/etc/init.d/rcS", "");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
135 add_new_action(RESPAWN, "/sbin/getty -n -l /bin/sh -L 115200 tty1 vt100", "");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
136 } else {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
137 while((q = p = get_line(fd))) { //read single line from /etc/inittab
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
138 char *x;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
139
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
140 if ((x = strchr(p, '#'))) *x = '\0';
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
141 line_number++;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
142 token_count = 0;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
143 action = 0;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
144 while ((extracted_token = strsep(&p,":"))) {
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
145 token_count++;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
146 switch (token_count) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
147 case 1:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
148 if (*extracted_token) {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
149 if (!strncmp(extracted_token, "/dev/", 5))
1183
0752b2d58909 Rename xmsprintf() to just xmprintf().
Rob Landley <rob@landley.net>
parents: 1181
diff changeset
150 tty_name = xmprintf("%s",extracted_token);
0752b2d58909 Rename xmsprintf() to just xmprintf().
Rob Landley <rob@landley.net>
parents: 1181
diff changeset
151 else tty_name = xmprintf("/dev/%s",extracted_token);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
152 } else tty_name = xstrdup("");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
153 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
154 case 2:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
155 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
156 case 3:
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
157 for (tmp = act_name, i = 0; *tmp; i++, tmp += strlen(tmp) +1) {
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
158 if (!strcmp(tmp, extracted_token)) {
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
159 action = 1 << i;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
160 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
161 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
162 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
163 if (!*tmp) error_msg("Invalid action at line number %d ---- ignoring",line_number);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
164 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
165 case 4:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
166 command = xstrdup(extracted_token);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
167 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
168 default:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
169 error_msg("Bad inittab entry at line %d", line_number);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
170 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
171 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
172 } //while token
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
173
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
174 if (q) free(q);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
175 if (token_count != 4) continue;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
176 if (action) add_new_action(action, command, tty_name);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
177 free(tty_name);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
178 free(command);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
179 } //while line
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
180
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
181 close(fd);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
182 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
183 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
184
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
185 static void run_command(char *command)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
186 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
187 char *final_command[128];
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
188 int hyphen = (command[0]=='-');
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
189
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
190 command = command + hyphen;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
191 if (!strpbrk(command, "?<>'\";[]{}\\|=()*&^$!`~")) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
192 char *next_command;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
193 char *extracted_command;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
194 int x = 0;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
195
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
196 next_command = strncpy(toybuf, command - hyphen, sizeof(toybuf));
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
197 next_command[sizeof(toybuf) - 1] = toybuf[sizeof(toybuf) - 1 ] = '\0';
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
198 command = next_command + hyphen;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
199 while ((extracted_command = strsep(&next_command," \t"))) {
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
200 if (*extracted_command) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
201 final_command[x] = extracted_command;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
202 x++;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
203 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
204 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
205 final_command[x] = NULL;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
206 } else {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
207 snprintf(toybuf, sizeof(toybuf), "exec %s", command);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
208 command = "-/bin/sh"+1;
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
209 final_command[0] = ("-/bin/sh"+!hyphen);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
210 final_command[1] = "-c";
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
211 final_command[2] = toybuf;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
212 final_command[3] = NULL;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
213 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
214 if (hyphen) ioctl(0, TIOCSCTTY, 0);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
215 execvp(command, final_command);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
216 error_msg("unable to run %s",command);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
217 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
218
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
219 //runs all same type of actions
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
220 static pid_t final_run(struct action_list_seed *x)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
221 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
222 pid_t pid;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
223 int fd;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
224 sigset_t signal_set;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
225
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
226 sigfillset(&signal_set);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
227 sigprocmask(SIG_BLOCK, &signal_set, NULL);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
228 if (x->action & ASKFIRST) pid = fork();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
229 else pid = vfork();
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
230
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
231 if (pid > 0) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
232 //parent process or error
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
233 //unblock the signals
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
234 sigfillset(&signal_set);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
235 sigprocmask(SIG_UNBLOCK, &signal_set, NULL);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
236
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
237 return pid;
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
238 } else if (pid < 0) {
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
239 perror_msg("fork fail");
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
240 sleep(1);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
241 return 0;
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
242 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
243
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
244 //new born child process
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
245 sigset_t signal_set_c;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
246 sigfillset(&signal_set_c);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
247 sigprocmask(SIG_UNBLOCK, &signal_set_c, NULL);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
248 setsid(); //new session
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
249
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
250 if (x->terminal_name[0]) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
251 close(0);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
252 fd = open(x->terminal_name, (O_RDWR|O_NONBLOCK),0600);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
253 if (fd != 0) {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
254 error_msg("Unable to open %s,%s\n", x->terminal_name, strerror(errno));
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
255 _exit(EXIT_FAILURE);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
256 } else {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
257 dup2(0, 1);
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
258 dup2(0, 2);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
259 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
260 }
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
261 reset_term(0);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
262 run_command(x->command);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
263 _exit(-1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
264 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
265
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
266 static struct action_list_seed* mark_as_terminated_process(pid_t pid)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
267 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
268 struct action_list_seed *x;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
269
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
270 if (pid > 0) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
271 for (x = action_list_pointer; x; x = x->next) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
272 if (x->pid == pid) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
273 x->pid = 0;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
274 return x;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
275 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
276 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
277 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
278
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
279 return NULL;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
280 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
281
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
282 static void waitforpid(pid_t pid)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
283 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
284 if (pid <= 0) return;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
285
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
286 for(;;) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
287 pid_t y = wait(NULL);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
288 mark_as_terminated_process(y);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
289 if (kill(y, 0)) break;
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
290 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
291 }
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
292
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
293 static void run_action_from_list(int action)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
294 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
295 pid_t pid;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
296 struct action_list_seed *x = action_list_pointer;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
297
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
298 for (; x; x = x->next) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
299 if (!(x->action & action)) continue;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
300 if (x->action & (SHUTDOWN|ONCE|SYSINIT|CTRLALTDEL|WAIT)) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
301 pid = final_run(x);
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
302 if (!pid) return;
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
303 if (x->action & (SHUTDOWN|SYSINIT|CTRLALTDEL|WAIT)) waitforpid(pid);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
304 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
305 if (x->action & (ASKFIRST|RESPAWN))
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
306 if (!(x->pid)) x->pid = final_run(x);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
307 }
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
308 }
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
309
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
310 static void set_default(void)
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
311 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
312 sigset_t signal_set_c;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
313
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
314 sigatexit(SIG_DFL);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
315 sigfillset(&signal_set_c);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
316 sigprocmask(SIG_UNBLOCK,&signal_set_c, NULL);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
317
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
318 run_action_from_list(SHUTDOWN);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
319 error_msg("The system is going down NOW!");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
320 kill(-1, SIGTERM);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
321 error_msg("Sent SIGTERM to all processes");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
322 sync();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
323 sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
324 kill(-1,SIGKILL);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
325 sync();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
326 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
327
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
328 static void halt_poweroff_reboot_handler(int sig_no)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
329 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
330 unsigned int reboot_magic_no = 0;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
331 pid_t pid;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
332
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
333 set_default();
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
334
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
335 switch (sig_no) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
336 case SIGUSR1:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
337 error_msg("Requesting system halt");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
338 reboot_magic_no=RB_HALT_SYSTEM;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
339 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
340 case SIGUSR2:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
341 error_msg("Requesting system poweroff");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
342 reboot_magic_no=RB_POWER_OFF;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
343 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
344 case SIGTERM:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
345 error_msg("Requesting system reboot");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
346 reboot_magic_no=RB_AUTOBOOT;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
347 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
348 default:
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
349 break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
350 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
351
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
352 sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
353 pid = vfork();
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
354
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
355 if (pid == 0) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
356 reboot(reboot_magic_no);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
357 _exit(EXIT_SUCCESS);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
358 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
359
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
360 while(1) sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
361 }
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
362
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
363 static void restart_init_handler(int sig_no)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
364 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
365 struct action_list_seed *x;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
366 pid_t pid;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
367 int fd;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
368
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
369 for (x = action_list_pointer; x; x = x->next) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
370 if (!(x->action & RESTART)) continue;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
371
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
372 set_default();
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
373
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
374 if (x->terminal_name[0]) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
375 close(0);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
376 fd = open(x->terminal_name, (O_RDWR|O_NONBLOCK),0600);
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
377
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
378 if (fd != 0) {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
379 error_msg("Unable to open %s,%s\n", x->terminal_name, strerror(errno));
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
380 sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
381 pid = vfork();
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
382
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
383 if (pid == 0) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
384 reboot(RB_HALT_SYSTEM);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
385 _exit(EXIT_SUCCESS);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
386 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
387
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
388 while(1) sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
389 } else {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
390 dup2(0, 1);
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
391 dup2(0, 2);
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
392 reset_term(0);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
393 run_command(x->command);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
394 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
395 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
396 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
397 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
398
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
399 static void catch_signal(int sig_no)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
400 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
401 caught_signal = sig_no;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
402 error_msg("signal seen");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
403 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
404
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
405 static void pause_handler(int sig_no)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
406 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
407 int signal_backup,errno_backup;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
408 pid_t pid;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
409
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
410 errno_backup = errno;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
411 signal_backup = caught_signal;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
412 signal(SIGCONT, catch_signal);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
413
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
414 while(1) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
415 if (caught_signal == SIGCONT) break;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
416 do pid = waitpid(-1,NULL,WNOHANG); while((pid==-1) && (errno=EINTR));
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
417 mark_as_terminated_process(pid);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
418 sleep(1);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
419 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
420
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
421 signal(SIGCONT, SIG_DFL);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
422 errno = errno_backup;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
423 caught_signal = signal_backup;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
424 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
425
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
426 static int check_if_pending_signals(void)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
427 {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
428 int signal_caught = 0;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
429
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
430 while(1) {
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
431 int sig = caught_signal;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
432 if (!sig) return signal_caught;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
433 caught_signal = 0;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
434 signal_caught = 1;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
435 if (sig == SIGINT) run_action_from_list(CTRLALTDEL);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
436 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
437 }
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
438
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
439 void init_main(void)
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
440 {
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
441 struct sigaction sig_act;
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
442
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
443 if (getpid() != 1) error_exit("Already running");
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
444 printf("Started init\n");
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
445 initialize_console();
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
446 reset_term(0);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
447
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
448 if (chdir("/")) perror_exit("Can't cd to /");
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
449 setsid();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
450
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
451 putenv("HOME=/");
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
452 putenv("PATH=/sbin:/usr/sbin:/bin:/usr/bin");
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
453 putenv("SHELL=/bin/sh");
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
454 putenv("USER=root");
1298
c25ee9918e65 First pass init cleanup: use sigatexit() to set multiple signal handlers, rename set_sane_term() to reset_term() and have it take the fd it works on as an argument, some whitespace and help text tweaks.
Rob Landley <rob@landley.net>
parents: 1261
diff changeset
455
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
456 inittab_parsing();
1185
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
457 signal(SIGUSR1, halt_poweroff_reboot_handler);//halt
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
458 signal(SIGUSR2, halt_poweroff_reboot_handler);//poweroff
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
459 signal(SIGTERM, halt_poweroff_reboot_handler);//reboot
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
460 signal(SIGQUIT, restart_init_handler);//restart init
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
461 memset(&sig_act, 0, sizeof(sig_act));
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
462 sigfillset(&sig_act.sa_mask);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
463 sigdelset(&sig_act.sa_mask, SIGCONT);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
464 sig_act.sa_handler = pause_handler;
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
465 sigaction(SIGTSTP, &sig_act, NULL);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
466 memset(&sig_act, 0, sizeof(sig_act));
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
467 sig_act.sa_handler = catch_signal;
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
468 sigaction(SIGINT, &sig_act, NULL);
2a4f1dc494d0 -Eradicate (char*) casts for strings.
Isaac Dunham <ibid.ag@gmail.com>
parents: 1183
diff changeset
469 sigaction(SIGHUP, &sig_act, NULL);
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
470 run_action_from_list(SYSINIT);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
471 check_if_pending_signals();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
472 run_action_from_list(WAIT);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
473 check_if_pending_signals();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
474 run_action_from_list(ONCE);
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
475 while (1) {
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
476 int suspected_WNOHANG = check_if_pending_signals();
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
477
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
478 run_action_from_list(RESPAWN | ASKFIRST);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
479 suspected_WNOHANG = suspected_WNOHANG|check_if_pending_signals();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
480 sleep(1);//let cpu breath
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
481 suspected_WNOHANG = suspected_WNOHANG|check_if_pending_signals();
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
482 if (suspected_WNOHANG) suspected_WNOHANG=WNOHANG;
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
483
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
484 while(1) {
1181
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
485 pid_t pid = waitpid(-1, NULL, suspected_WNOHANG);
a2f80613be36 Whitespace changes, and collate a couple declarations/first assignment.
Rob Landley <rob@landley.net>
parents: 986
diff changeset
486
986
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
487 if (pid <= 0) break;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
488 mark_as_terminated_process(pid);
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
489 suspected_WNOHANG = WNOHANG;
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
490 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
491 }
69adf14d70e1 System V style init, submitted by Kyungwan Han.
Rob Landley <rob@landley.net>
parents:
diff changeset
492 }