Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Mini init implementation for busybox |
| 3 | * |
| 4 | * |
| 5 | * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>. |
| 6 | * Adjusted by so many folks, it's impossible to keep track. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 24 | #include "internal.h" |
| 25 | #include <stdio.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <stdarg.h> |
| 28 | #include <unistd.h> |
| 29 | #include <errno.h> |
| 30 | #include <signal.h> |
| 31 | #include <termios.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/fcntl.h> |
| 34 | #include <sys/wait.h> |
| 35 | #include <string.h> |
| 36 | #include <sys/mount.h> |
| 37 | #include <sys/reboot.h> |
| 38 | #include <sys/kdaemon.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 39 | #include <sys/sysmacros.h> |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 40 | #include <linux/serial.h> /* for serial_struct */ |
| 41 | #include <sys/vt.h> /* for vt_stat */ |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 42 | #include <sys/ioctl.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 43 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 44 | #define VT_CONSOLE "/dev/console" /* Logical system console */ |
Eric Andersen | be971d6 | 1999-11-03 16:52:50 +0000 | [diff] [blame] | 45 | #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */ |
| 46 | #define VT_SECONDARY "/dev/tty2" /* Virtual console */ |
| 47 | #define VT_LOG "/dev/tty3" /* Virtual console */ |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 48 | #define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */ |
| 49 | #define SERIAL_CON1 "/dev/ttyS1" /* Serial console */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 50 | #define SHELL "/bin/sh" /* Default shell */ |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 51 | #define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */ |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 52 | #define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin" |
| 53 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 54 | #define LOG 0x1 |
| 55 | #define CONSOLE 0x2 |
| 56 | static char *console = VT_CONSOLE; |
Eric Andersen | be971d6 | 1999-11-03 16:52:50 +0000 | [diff] [blame] | 57 | static char *second_console = VT_SECONDARY; |
| 58 | static char *log = VT_LOG; |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 59 | |
| 60 | |
| 61 | |
| 62 | /* try to open up the specified device */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 63 | int device_open(char *device, int mode) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 64 | { |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 65 | int m, f, fd = -1; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 66 | |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 67 | m = mode | O_NONBLOCK; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 68 | |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 69 | /* Retry up to 5 times */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 70 | for (f = 0; f < 5; f++) |
| 71 | if ((fd = open(device, m)) >= 0) |
| 72 | break; |
| 73 | if (fd < 0) |
| 74 | return fd; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 75 | /* Reset original flags. */ |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 76 | if (m != mode) |
| 77 | fcntl(fd, F_SETFL, mode); |
| 78 | return fd; |
| 79 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 80 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 81 | /* print a message to the specified device: |
| 82 | * device may be bitwise-or'd from LOG | CONSOLE */ |
| 83 | void message(int device, char *fmt, ...) |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 84 | { |
| 85 | int fd; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 86 | static int log_fd=-1; |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 87 | va_list arguments; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 88 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 89 | /* Take full control of the log tty, and never close it. |
| 90 | * It's mine, all mine! Muhahahaha! */ |
| 91 | if (log_fd==-1) { |
| 92 | if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) { |
| 93 | log_fd=-1; |
| 94 | fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log); |
| 95 | fflush(stderr); |
| 96 | return; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | if ( (device & LOG) && (log_fd != -1) ) { |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 101 | va_start(arguments, fmt); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 102 | vdprintf(log_fd, fmt, arguments); |
Eric Andersen | a745606 | 1999-10-27 02:31:32 +0000 | [diff] [blame] | 103 | va_end(arguments); |
| 104 | } |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 105 | if (device & CONSOLE) { |
| 106 | if ((fd = device_open(console, O_WRONLY|O_NOCTTY|O_NDELAY)) >= 0) { |
| 107 | va_start(arguments, fmt); |
| 108 | vdprintf(fd, fmt, arguments); |
| 109 | va_end(arguments); |
| 110 | close(fd); |
| 111 | } else { |
| 112 | fprintf(stderr, "Bummer, can't print: "); |
| 113 | va_start(arguments, fmt); |
| 114 | vfprintf(stderr, fmt, arguments); |
| 115 | fflush(stderr); |
| 116 | va_end(arguments); |
| 117 | } |
| 118 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 119 | } |
| 120 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 121 | |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 122 | /* Set terminal settings to reasonable defaults */ |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 123 | void set_term( int fd) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 124 | { |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 125 | struct termios tty; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 126 | #if 0 |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 127 | static const char control_characters[] = { |
| 128 | '\003', '\034', '\177', '\025', '\004', '\0', |
| 129 | '\1', '\0', '\021', '\023', '\032', '\0', '\022', |
| 130 | '\017', '\027', '\026', '\0' |
| 131 | }; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 132 | #endif |
| 133 | static const char control_characters[] = { |
| 134 | '\003', '\034', '\177', '\030', '\004', '\0', |
| 135 | '\1', '\0', '\021', '\023', '\032', '\0', '\022', |
| 136 | '\017', '\027', '\026', '\0' |
| 137 | }; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 138 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 139 | tcgetattr(fd, &tty); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 140 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 141 | /* Make it be sane */ |
| 142 | tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD; |
| 143 | tty.c_cflag |= HUPCL|CLOCAL; |
| 144 | |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 145 | /* input modes */ |
| 146 | tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 147 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 148 | /* use line dicipline 0 */ |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 149 | tty.c_line = 0; |
| 150 | |
| 151 | /* output modes */ |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 152 | tty.c_oflag = OPOST|ONLCR; |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 153 | |
| 154 | /* local modes */ |
| 155 | tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOPRT|ECHOKE|IEXTEN; |
| 156 | |
| 157 | /* control chars */ |
| 158 | memcpy(tty.c_cc, control_characters, sizeof(control_characters)); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 159 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 160 | tcsetattr(fd, TCSANOW, &tty); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 161 | } |
| 162 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 163 | /* Set terminal settings to reasonable defaults */ |
| 164 | void set_term_old( int fd) |
| 165 | { |
| 166 | struct termios tty; |
| 167 | |
| 168 | ioctl(fd, TCGETA, &tty); |
| 169 | |
| 170 | tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD; |
| 171 | tty.c_cflag |= HUPCL|CLOCAL; |
| 172 | |
| 173 | tty.c_cc[VINTR] = 3; |
| 174 | tty.c_cc[VQUIT] = 28; |
| 175 | tty.c_cc[VERASE] = 127; |
| 176 | //tty.c_cc[VKILL] = 21; |
| 177 | tty.c_cc[VKILL] = 24; |
| 178 | tty.c_cc[VEOF] = 4; |
| 179 | tty.c_cc[VTIME] = 0; |
| 180 | tty.c_cc[VMIN] = 1; |
| 181 | tty.c_cc[VSWTC] = 0; |
| 182 | tty.c_cc[VSTART] = 17; |
| 183 | tty.c_cc[VSTOP] = 19; |
| 184 | tty.c_cc[VSUSP] = 26; |
| 185 | tty.c_cc[VEOL] = 0; |
| 186 | tty.c_cc[VREPRINT] = 18; |
| 187 | tty.c_cc[VDISCARD] = 15; |
| 188 | tty.c_cc[VWERASE] = 23; |
| 189 | tty.c_cc[VLNEXT] = 22; |
| 190 | tty.c_cc[VEOL2] = 0; |
| 191 | |
| 192 | |
| 193 | tty.c_line = 0; |
| 194 | tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY; |
| 195 | tty.c_oflag = OPOST|ONLCR; |
| 196 | tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOPRT|ECHOKE|IEXTEN; |
| 197 | |
| 198 | ioctl(fd, TCSETA, &tty); |
| 199 | } |
| 200 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 201 | /* How much memory does this machine have? */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 202 | static int mem_total() |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 203 | { |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 204 | char s[80]; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 205 | char *p = "/proc/meminfo"; |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 206 | FILE *f; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 207 | const char pattern[] = "MemTotal:"; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 208 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 209 | if ((f = fopen(p, "r")) < 0) { |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 210 | message(LOG, "Error opening %s: %s\n", p, strerror( errno)); |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 211 | return -1; |
| 212 | } |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 213 | while (NULL != fgets(s, 79, f)) { |
| 214 | p = strstr(s, pattern); |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 215 | if (NULL != p) { |
| 216 | fclose(f); |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 217 | return (atoi(p + strlen(pattern))); |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 218 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 219 | } |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 220 | return -1; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 223 | static void console_init() |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 224 | { |
| 225 | int fd; |
| 226 | int tried_devcons = 0; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 227 | int tried_vtprimary = 0; |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 228 | char *s; |
| 229 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 230 | if ((s = getenv("CONSOLE")) != NULL) { |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 231 | console = s; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 232 | /* Apparently the sparc does wierd things... */ |
| 233 | #if defined (__sparc__) |
| 234 | if (strncmp( s, "/dev/tty", 8 )==0) { |
| 235 | switch( s[8]) { |
| 236 | case 'a': |
| 237 | s=SERIAL_CON0; |
| 238 | break; |
| 239 | case 'b': |
| 240 | s=SERIAL_CON1; |
| 241 | } |
| 242 | } |
| 243 | #endif |
| 244 | } else { |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 245 | console = VT_CONSOLE; |
Eric Andersen | be971d6 | 1999-11-03 16:52:50 +0000 | [diff] [blame] | 246 | tried_devcons++; |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 247 | } |
Eric Andersen | a745606 | 1999-10-27 02:31:32 +0000 | [diff] [blame] | 248 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 249 | while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) { |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 250 | /* Can't open selected console -- try /dev/console */ |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 251 | if (!tried_devcons) { |
| 252 | tried_devcons++; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 253 | console = VT_CONSOLE; |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 254 | continue; |
| 255 | } |
Eric Andersen | be971d6 | 1999-11-03 16:52:50 +0000 | [diff] [blame] | 256 | /* Can't open selected console -- try vt1 */ |
| 257 | if (!tried_vtprimary) { |
| 258 | tried_vtprimary++; |
| 259 | console = VT_PRIMARY; |
| 260 | continue; |
| 261 | } |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 262 | break; |
| 263 | } |
| 264 | if (fd < 0) |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 265 | /* Perhaps we should panic here? */ |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 266 | console = "/dev/null"; |
| 267 | else |
| 268 | close(fd); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 269 | message(LOG, "console=%s\n", console ); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 272 | static int waitfor(int pid) |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 273 | { |
| 274 | int status, wpid; |
| 275 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 276 | message(LOG, "Waiting for process %d.\n", pid); |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 277 | while ((wpid = wait(&status)) != pid) { |
| 278 | if (wpid > 0) |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 279 | message(LOG, "pid %d exited, status=0x%x.\n", wpid, status); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 280 | } |
| 281 | return wpid; |
| 282 | } |
| 283 | |
Eric Andersen | a745606 | 1999-10-27 02:31:32 +0000 | [diff] [blame] | 284 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 285 | static pid_t run(const char * const* command, |
| 286 | char *terminal, int get_enter) |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 287 | { |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 288 | int fd; |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 289 | pid_t pid; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 290 | const char * const* cmd = command+1; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 291 | static const char press_enter[] = |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 292 | "\nPlease press Enter to activate this console. "; |
| 293 | |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 294 | if ((pid = fork()) == 0) { |
| 295 | /* Clean up */ |
| 296 | close(0); |
| 297 | close(1); |
| 298 | close(2); |
| 299 | setsid(); |
| 300 | |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 301 | /* Reset signal handlers set for parent process */ |
| 302 | signal(SIGUSR1, SIG_DFL); |
| 303 | signal(SIGUSR2, SIG_DFL); |
| 304 | signal(SIGINT, SIG_DFL); |
| 305 | signal(SIGTERM, SIG_DFL); |
| 306 | |
| 307 | if ((fd = device_open(terminal, O_RDWR)) < 0) { |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 308 | message(LOG, "Bummer, can't open %s\r\n", terminal); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 309 | exit(-1); |
| 310 | } |
| 311 | dup(fd); |
| 312 | dup(fd); |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 313 | tcsetpgrp(0, getpgrp()); |
| 314 | set_term(0); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 315 | |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 316 | if (get_enter==TRUE) { |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 317 | /* |
| 318 | * Save memory by not exec-ing anything large (like a shell) |
| 319 | * before the user wants it. This is critical if swap is not |
| 320 | * enabled and the system has low memory. Generally this will |
| 321 | * be run on the second virtual console, and the first will |
| 322 | * be allowed to start a shell or whatever an init script |
| 323 | * specifies. |
| 324 | */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 325 | char c; |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 326 | message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n", |
| 327 | *cmd, getpid(), terminal ); |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 328 | write(1, press_enter, sizeof(press_enter) - 1); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 329 | read(0, &c, 1); |
| 330 | } |
| 331 | |
| 332 | /* Log the process name and args */ |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 333 | message(LOG, "Starting pid %d, console %s: '", getpid(), terminal); |
| 334 | while ( *cmd) message(LOG, "%s ", *cmd++); |
| 335 | message(LOG, "'\r\n"); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 336 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 337 | /* Now run it. The new program will take over this PID, |
Eric Andersen | a745606 | 1999-10-27 02:31:32 +0000 | [diff] [blame] | 338 | * so nothing further in init.c should be run. */ |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 339 | execvp(*command, (char**)command+1); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 340 | |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 341 | message(LOG, "Bummer, could not run '%s'\n", command); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 342 | exit(-1); |
| 343 | } |
| 344 | return pid; |
| 345 | } |
| 346 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 347 | /* Make sure there is enough memory to do something useful. * |
| 348 | * Calls swapon if needed so be sure /proc is mounted. */ |
| 349 | static void check_memory() |
| 350 | { |
| 351 | struct stat statbuf; |
| 352 | const char* const swap_on_cmd[] = |
| 353 | { "/bin/swapon", "swapon", "-a", 0}; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 354 | |
| 355 | if (mem_total() > 3500) |
| 356 | return; |
| 357 | |
| 358 | if (stat("/etc/fstab", &statbuf) == 0) { |
| 359 | /* Try to turn on swap */ |
| 360 | waitfor(run(swap_on_cmd, log, FALSE)); |
| 361 | if (mem_total() < 3500) |
| 362 | goto goodnight; |
| 363 | } else |
| 364 | goto goodnight; |
| 365 | return; |
| 366 | |
| 367 | goodnight: |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 368 | message(CONSOLE, "Sorry, your computer does not have enough memory.\r\n"); |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 369 | while (1) sleep(1); |
| 370 | } |
| 371 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 372 | static void shutdown_system(void) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 373 | { |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 374 | const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0}; |
| 375 | const char* const umount_cmd[] = { "umount", "umount", "-a", "-n", 0}; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 376 | |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 377 | #ifndef DEBUG_INIT |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 378 | /* Allow Ctrl-Alt-Del to reboot system. */ |
| 379 | reboot(RB_ENABLE_CAD); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 380 | #endif |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 381 | message(CONSOLE, "The system is going down NOW !!\r\n"); |
| 382 | sync(); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 383 | /* Send signals to every process _except_ pid 1 */ |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 384 | message(CONSOLE, "Sending SIGHUP to all processes.\r\n"); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 385 | #ifndef DEBUG_INIT |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 386 | kill(-1, SIGHUP); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 387 | #endif |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 388 | sleep(2); |
| 389 | sync(); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 390 | message(CONSOLE, "Sending SIGKILL to all processes.\r\n"); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 391 | #ifndef DEBUG_INIT |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 392 | kill(-1, SIGKILL); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 393 | #endif |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 394 | sleep(1); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 395 | waitfor(run( swap_off_cmd, console, FALSE)); |
| 396 | waitfor(run( umount_cmd, console, FALSE)); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 397 | sync(); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 398 | bdflush(1, 0); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 399 | } |
| 400 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 401 | static void halt_signal(int sig) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 402 | { |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 403 | shutdown_system(); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 404 | message(CONSOLE, |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 405 | "The system is halted. Press CTRL-ALT-DEL or turn off power\r\n"); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 406 | sync(); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 407 | #ifndef DEBUG_INIT |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 408 | reboot(RB_HALT_SYSTEM); |
| 409 | //reboot(RB_POWER_OFF); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 410 | #endif |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 411 | exit(0); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 412 | } |
| 413 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 414 | static void reboot_signal(int sig) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 415 | { |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 416 | shutdown_system(); |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 417 | message(CONSOLE, "Please stand by while rebooting the system.\r\n"); |
| 418 | sync(); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 419 | #ifndef DEBUG_INIT |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 420 | reboot(RB_AUTOBOOT); |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 421 | #endif |
Eric Andersen | abc7d59 | 1999-10-19 00:27:50 +0000 | [diff] [blame] | 422 | exit(0); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 423 | } |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 424 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 425 | extern int init_main(int argc, char **argv) |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 426 | { |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 427 | int run_rc = TRUE; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 428 | int wait_for_enter = TRUE; |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 429 | pid_t pid1 = 0; |
| 430 | pid_t pid2 = 0; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 431 | struct stat statbuf; |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 432 | const char* const init_commands[] = { INITSCRIPT, INITSCRIPT, 0}; |
| 433 | const char* const shell_commands[] = { SHELL, "-" SHELL, 0}; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 434 | const char* const* tty0_commands = shell_commands; |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 435 | const char* const* tty1_commands = shell_commands; |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 436 | #ifdef DEBUG_INIT |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 437 | char *hello_msg_format = |
Eric Andersen | 0457978 | 1999-10-29 23:12:50 +0000 | [diff] [blame] | 438 | "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n"; |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 439 | #else |
| 440 | char *hello_msg_format = |
| 441 | "init started: BusyBox v%s (%s) multi-call binary\r\n"; |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 442 | #endif |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 443 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 444 | |
| 445 | /* Check if we are supposed to be in single user mode */ |
| 446 | if ( argc > 1 && (!strcmp(argv[1], "single") || |
| 447 | !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) { |
| 448 | run_rc = FALSE; |
| 449 | } |
| 450 | |
| 451 | |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 452 | /* Set up sig handlers -- be sure to |
| 453 | * clear all of these in run() */ |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 454 | signal(SIGUSR1, halt_signal); |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 455 | signal(SIGUSR2, reboot_signal); |
| 456 | signal(SIGINT, reboot_signal); |
| 457 | signal(SIGTERM, reboot_signal); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 458 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 459 | /* Turn off rebooting via CTL-ALT-DEL -- we get a |
| 460 | * SIGINT on CAD so we can shut things down gracefully... */ |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 461 | #ifndef DEBUG_INIT |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 462 | reboot(RB_DISABLE_CAD); |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 463 | #endif |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 464 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 465 | /* Figure out where the default console should be */ |
| 466 | console_init(); |
Eric Andersen | 0460ff2 | 1999-10-25 23:32:44 +0000 | [diff] [blame] | 467 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 468 | /* Close whatever files are open, and reset the console. */ |
| 469 | close(0); |
| 470 | close(1); |
| 471 | close(2); |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 472 | set_term(0); |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 473 | setsid(); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 474 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 475 | /* Make sure PATH is set to something sane */ |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 476 | putenv(PATH_DEFAULT); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 477 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 478 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 479 | /* Hello world */ |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 480 | #ifndef DEBUG_INIT |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 481 | message(CONSOLE|LOG, hello_msg_format, BB_VER, BB_BT); |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 482 | #else |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 483 | message(CONSOLE|LOG, hello_msg_format, getpid(), BB_VER, BB_BT); |
Eric Andersen | 7f1acfd | 1999-10-29 23:09:13 +0000 | [diff] [blame] | 484 | #endif |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 485 | |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 486 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 487 | /* Mount /proc */ |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 488 | if (mount ("proc", "/proc", "proc", 0, 0) == 0) |
| 489 | message(CONSOLE|LOG, "Mounting /proc: done.\n"); |
| 490 | else |
| 491 | message(CONSOLE|LOG, "Mounting /proc: failed!\n"); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 492 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 493 | /* Make sure there is enough memory to do something useful. */ |
| 494 | check_memory(); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 495 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 496 | |
| 497 | /* Make sure an init script exists before trying to run it */ |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 498 | if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) { |
| 499 | wait_for_enter = FALSE; |
| 500 | tty0_commands = init_commands; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 501 | } |
| 502 | |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 503 | |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 504 | /* Ok, now launch the rc script and/or prepare to |
| 505 | * start up some VTs if somebody hits enter... |
| 506 | */ |
| 507 | for (;;) { |
Eric Andersen | c7c41d3 | 1999-10-28 00:24:35 +0000 | [diff] [blame] | 508 | pid_t wpid; |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 509 | int status; |
| 510 | |
| 511 | if (pid1 == 0 && tty0_commands) { |
Eric Andersen | 2f6c04f | 1999-11-01 23:59:44 +0000 | [diff] [blame] | 512 | pid1 = run(tty0_commands, console, wait_for_enter); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 513 | } |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 514 | if (pid2 == 0 && tty1_commands) { |
Eric Andersen | be971d6 | 1999-11-03 16:52:50 +0000 | [diff] [blame] | 515 | pid2 = run(tty1_commands, second_console, TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 516 | } |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 517 | wpid = wait(&status); |
Eric Andersen | a745606 | 1999-10-27 02:31:32 +0000 | [diff] [blame] | 518 | if (wpid > 0 ) { |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 519 | message(LOG, "pid %d exited, status=%x.\n", wpid, status); |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 520 | } |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 521 | if (wpid == pid1) { |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 522 | pid1 = 0; |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 523 | if (run_rc == TRUE) { |
Eric Andersen | 3ae0c78 | 1999-11-04 01:13:21 +0000 | [diff] [blame^] | 524 | /* Don't respawn init script if it exits, |
| 525 | * Start a shell instead. */ |
Eric Andersen | 219d6f5 | 1999-11-02 19:43:01 +0000 | [diff] [blame] | 526 | run_rc=FALSE; |
| 527 | wait_for_enter=TRUE; |
| 528 | tty0_commands=shell_commands; |
| 529 | } |
Eric Andersen | 8a8fbb8 | 1999-10-26 00:18:56 +0000 | [diff] [blame] | 530 | } |
| 531 | if (wpid == pid2) { |
| 532 | pid2 = 0; |
| 533 | } |
| 534 | sleep(1); |
| 535 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 536 | } |