More stuf. sed works.
This commit is contained in:
Eric Andersen
80
init/init.c
80
init/init.c
@@ -41,6 +41,9 @@
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#include <sys/vt.h> /* for vt_stat */
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#include <sys/ioctl.h>
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/* Turn this on to debug init so it won't reboot when killed */
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#define DEBUG_INIT
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#define CONSOLE "/dev/console" /* Logical system console */
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#define VT_PRIMARY "/dev/tty0" /* Virtual console master */
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#define VT_SECONDARY "/dev/tty1" /* Virtual console master */
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@@ -61,7 +64,7 @@ int device_open(char *device, int mode)
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{
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int m, f, fd = -1;
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mode = m | O_NONBLOCK;
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m = mode | O_NONBLOCK;
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/* Retry up to 5 times */
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for (f = 0; f < 5; f++)
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@@ -99,25 +102,28 @@ void message(char *device, char *fmt, ...)
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void set_term( int fd)
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{
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struct termios tty;
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static const char control_characters[] = {
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'\003', '\034', '\177', '\025', '\004', '\0',
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'\1', '\0', '\021', '\023', '\032', '\0', '\022',
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'\017', '\027', '\026', '\0'
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};
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tcgetattr(fd, &tty);
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tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
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tty.c_cflag |= HUPCL|CLOCAL;
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tty.c_cc[VINTR] = 3;
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tty.c_cc[VQUIT] = 28;
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tty.c_cc[VERASE] = 127;
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tty.c_cc[VKILL] = 24;
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tty.c_cc[VEOF] = 4;
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tty.c_cc[VTIME] = 0;
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tty.c_cc[VMIN] = 1;
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tty.c_cc[VSTART] = 17;
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tty.c_cc[VSTOP] = 19;
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tty.c_cc[VSUSP] = 26;
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/* input modes */
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tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
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tty.c_iflag = IGNPAR|ICRNL|IXON|IXANY;
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/* use lineo dicipline 0 */
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tty.c_line = 0;
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/* output modes */
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tty.c_oflag = OPOST|ONLCR;
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tty.c_lflag = ISIG|ICANON|ECHO|ECHOCTL|ECHOPRT|ECHOKE;
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/* local modes */
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tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOPRT|ECHOKE|IEXTEN;
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/* control chars */
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memcpy(tty.c_cc, control_characters, sizeof(control_characters));
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tcsetattr(fd, TCSANOW, &tty);
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}
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@@ -151,7 +157,7 @@ static void set_free_pages()
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fclose(f);
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f = fopen("/proc/sys/vm/freepages", "w");
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fprintf(f, "30\t40\t50\n");
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printf("\nIncreased /proc/sys/vm/freepages values to 30/40/50\n");
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message(log, "\nIncreased /proc/sys/vm/freepages values to 30/40/50\n");
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}
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fclose(f);
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}
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@@ -165,7 +171,6 @@ static void console_init()
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int tried_vtmaster = 0;
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char *s;
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fprintf(stderr, "entering console_init()\n");
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if ((s = getenv("CONSOLE")) != NULL)
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console = s;
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else {
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@@ -175,6 +180,7 @@ static void console_init()
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if ( stat(CONSOLE, &statbuf) && S_ISLNK(statbuf.st_mode)) {
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fprintf(stderr, "Yikes! /dev/console does not exist or is a symlink.\n");
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message(log, "Yikes! /dev/console does not exist or is a symlink.\n");
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}
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while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
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if (!tried_devcons) {
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@@ -193,7 +199,7 @@ static void console_init()
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console = "/dev/null";
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else
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close(fd);
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fprintf(stderr, "console=%s\n", console);
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message(log, "console=%s\n", console);
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}
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static int waitfor(int pid)
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@@ -212,7 +218,7 @@ static int waitfor(int pid)
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static pid_t run(const char * const* command,
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char *terminal, int get_enter)
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{
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int i;
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int i, f;
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pid_t pid;
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static const char press_enter[] =
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"\nPlease press Enter to activate this console. ";
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@@ -224,9 +230,9 @@ static pid_t run(const char * const* command,
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close(2);
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setsid();
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open(terminal, O_RDWR);
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dup(0);
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dup(0);
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f=open(terminal, O_RDWR);
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dup(f);
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dup(f);
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tcsetpgrp(0, getpgrp());
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set_term(0);
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@@ -240,7 +246,7 @@ static pid_t run(const char * const* command,
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* specifies.
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*/
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char c;
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write(0, press_enter, sizeof(press_enter) - 1);
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write(1, press_enter, sizeof(press_enter) - 1);
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read(0, &c, 1);
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}
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@@ -269,7 +275,7 @@ static pid_t run(const char * const* command,
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return pid;
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}
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#ifndef DEBUG_INIT
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static void shutdown_system(void)
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{
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const char* const swap_off_cmd[] = { "/bin/swapoff", "-a", 0};
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@@ -314,6 +320,7 @@ static void reboot_signal(int sig)
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reboot(RB_AUTOBOOT);
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exit(0);
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}
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#endif
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extern int init_main(int argc, char **argv)
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{
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@@ -326,11 +333,17 @@ extern int init_main(int argc, char **argv)
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const char* const shell_commands[] = { SHELL, " -", 0};
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const char* const* tty0_commands = init_commands;
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const char* const* tty1_commands = shell_commands;
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#ifndef DEBUG_INIT
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char *hello_msg_format =
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"init(%d) started: BusyBox v%s (%s) multi-call binary\r\n";
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#else
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char *hello_msg_format =
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"init started: BusyBox v%s (%s) multi-call binary\r\n";
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#endif
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const char *no_memory =
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"Sorry, your computer does not have enough memory.\r\n";
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#ifndef DEBUG_INIT
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/* Set up sig handlers */
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signal(SIGUSR1, halt_signal);
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signal(SIGSEGV, halt_signal);
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@@ -344,7 +357,7 @@ extern int init_main(int argc, char **argv)
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/* Turn off rebooting via CTL-ALT-DEL -- we get a
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* SIGINT on CAD so we can shut things down gracefully... */
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reboot(RB_DISABLE_CAD);
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#endif
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/* Figure out where the default console should be */
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console_init();
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@@ -352,7 +365,7 @@ extern int init_main(int argc, char **argv)
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close(0);
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close(1);
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close(2);
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//set_term(0);
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set_term(0);
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setsid();
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/* Make sure PATH is set to something sane */
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@@ -360,17 +373,22 @@ extern int init_main(int argc, char **argv)
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putenv(PATH_DEFAULT);
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/* Hello world */
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#ifndef DEBUG_INIT
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message(log, hello_msg_format, BB_VER, BB_BT);
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fprintf(stderr, hello_msg_format, BB_VER, BB_BT);
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message(console, hello_msg_format, BB_VER, BB_BT);
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#else
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message(log, hello_msg_format, getpid(), BB_VER, BB_BT);
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message(console, hello_msg_format, getpid(), BB_VER, BB_BT);
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#endif
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/* Mount /proc */
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if (mount("/proc", "/proc", "proc", 0, 0) == 0) {
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fprintf(stderr, "Mounting /proc: done.\n");
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message(log, "Mounting /proc: done.\n");
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message(console, "Mounting /proc: done.\n");
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} else {
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fprintf(stderr, "Mounting /proc: failed!\n");
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message(log, "Mounting /proc: failed!\n");
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message(console, "Mounting /proc: failed!\n");
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}
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/* Make sure there is enough memory to do something useful */
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@@ -379,7 +397,7 @@ extern int init_main(int argc, char **argv)
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int retval;
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retval = stat("/etc/fstab", &statbuf);
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if (retval) {
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fprintf(stderr, "%s", no_memory);
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message(console, "%s", no_memory);
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while (1) {
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sleep(1);
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}
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@@ -387,7 +405,7 @@ extern int init_main(int argc, char **argv)
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/* Try to turn on swap */
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waitfor(run(swap_on_cmd, console, 0));
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if (mem_total() < 2000) {
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fprintf(stderr, "%s", no_memory);
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message(console, "%s", no_memory);
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while (1) {
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sleep(1);
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}
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