Stuf
This commit is contained in:
Eric Andersen
parent
2f6c04f63c
commit
219d6f5e0c
@ -32,8 +32,8 @@ for i in $h ; do
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mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' `
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(cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` );
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done
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rm -f $RPM_BUILD_ROOT/bin/ln
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install -m 755 busybox $RPM_BUILD_ROOT/bin/ln
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rm -f $RPM_BUILD_ROOT/bin/busybox
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install -m 755 busybox $RPM_BUILD_ROOT/bin/busybox
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%Clean
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rm -rf $RPM_BUILD_ROOT
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@ -32,8 +32,8 @@ for i in $h ; do
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mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' `
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(cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` );
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done
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rm -f $RPM_BUILD_ROOT/bin/ln
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install -m 755 busybox $RPM_BUILD_ROOT/bin/ln
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rm -f $RPM_BUILD_ROOT/bin/busybox
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install -m 755 busybox $RPM_BUILD_ROOT/bin/busybox
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%Clean
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rm -rf $RPM_BUILD_ROOT
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186
init.c
186
init.c
@ -45,17 +45,17 @@
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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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#define VT_LOG "/dev/tty2" /* Virtual console master */
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#define VT_PRIMARY "/dev/tty0" /* Primary virtual console */
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#define VT_SECONDARY "/dev/tty1" /* Virtual console */
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#define VT_LOG "/dev/tty2" /* Virtual console */
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#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
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#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
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#define SHELL "/bin/sh" /* Default shell */
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//#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */
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#define INITSCRIPT "/tmp/foo.sh"
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#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */
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#define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin"
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static char *console = CONSOLE;
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//static char *first_terminal = "/dev/tty1";
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static char *second_terminal = "/dev/tty2";
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static char *console = VT_PRIMARY;
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static char *second_terminal = VT_SECONDARY;
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static char *log = "/dev/tty3";
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@ -114,7 +114,7 @@ void set_term( int fd)
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/* input modes */
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tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
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/* use lineo dicipline 0 */
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/* use line dicipline 0 */
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tty.c_line = 0;
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/* output modes */
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@ -129,14 +129,18 @@ void set_term( int fd)
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tcsetattr(fd, TCSANOW, &tty);
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}
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/* How much memory does this machine have? */
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static int mem_total()
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{
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char s[80];
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char *p;
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char *p = "/proc/meminfo";
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FILE *f;
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const char pattern[] = "MemTotal:";
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f = fopen("/proc/meminfo", "r");
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if ((f = fopen(p, "r")) < 0) {
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message(log, "Error opening %s: %s\n", p, strerror( errno));
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return -1;
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}
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while (NULL != fgets(s, 79, f)) {
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p = strstr(s, pattern);
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if (NULL != p) {
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@ -147,60 +151,53 @@ static int mem_total()
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return -1;
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}
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static void set_free_pages()
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{
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char s[80];
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FILE *f;
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f = fopen("/proc/sys/vm/freepages", "r");
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fgets(s, 79, f);
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if (atoi(s) < 32) {
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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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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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static void console_init()
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{
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int fd;
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struct stat statbuf;
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int tried_devcons = 0;
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int tried_vtmaster = 0;
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int tried_vtprimary = 0;
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char *s;
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if ((s = getenv("CONSOLE")) != NULL)
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if ((s = getenv("CONSOLE")) != NULL) {
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console = s;
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else {
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console = CONSOLE;
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tried_devcons++;
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/* Apparently the sparc does wierd things... */
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#if defined (__sparc__)
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if (strncmp( s, "/dev/tty", 8 )==0) {
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switch( s[8]) {
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case 'a':
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s=SERIAL_CON0;
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break;
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case 'b':
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s=SERIAL_CON1;
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}
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}
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#endif
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} else {
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console = VT_PRIMARY;
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tried_vtprimary++;
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}
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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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/* Can't open selected console -- try vt1 */
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if (!tried_vtprimary) {
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tried_vtprimary++;
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console = VT_PRIMARY;
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continue;
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}
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/* Can't open selected console -- try /dev/console */
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if (!tried_devcons) {
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tried_devcons++;
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console = CONSOLE;
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continue;
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}
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if (!tried_vtmaster) {
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tried_vtmaster++;
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console = VT_PRIMARY;
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continue;
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}
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break;
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}
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if (fd < 0)
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/* Perhaps we should panic here? */
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console = "/dev/null";
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else
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close(fd);
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message(log, "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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@ -221,7 +218,7 @@ static pid_t run(const char * const* command,
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{
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int fd;
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pid_t pid;
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const char * const* cmd = command;
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const char * const* cmd = command+1;
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static const char press_enter[] =
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"\nPlease press Enter to activate this console. ";
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@ -262,7 +259,7 @@ static pid_t run(const char * const* command,
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}
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/* Log the process name and args */
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message(log, "Executing pid(%d): '", getpid());
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message(log, "Starting pid(%d): '", getpid());
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while ( *cmd) message(log, "%s ", *cmd++);
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message(log, "'\r\n");
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@ -270,12 +267,39 @@ static pid_t run(const char * const* command,
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* so nothing further in init.c should be run. */
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execvp(*command, (char**)command+1);
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message(log, "Bummer, could not execute '%s'\n", command);
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message(log, "Bummer, could not run '%s'\n", command);
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exit(-1);
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}
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return pid;
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}
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/* Make sure there is enough memory to do something useful. *
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* Calls swapon if needed so be sure /proc is mounted. */
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static void check_memory()
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{
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struct stat statbuf;
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const char* const swap_on_cmd[] =
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{ "/bin/swapon", "swapon", "-a", 0};
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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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if (mem_total() > 3500)
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return;
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if (stat("/etc/fstab", &statbuf) == 0) {
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/* Try to turn on swap */
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waitfor(run(swap_on_cmd, log, FALSE));
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if (mem_total() < 3500)
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goto goodnight;
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} else
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goto goodnight;
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return;
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goodnight:
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message(console, "%s", no_memory);
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while (1) sleep(1);
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}
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static void shutdown_system(void)
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{
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const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0};
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@ -333,14 +357,13 @@ static void reboot_signal(int sig)
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extern int init_main(int argc, char **argv)
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{
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int run_rc = TRUE;
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int wait_for_enter = FALSE;
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int wait_for_enter = TRUE;
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pid_t pid1 = 0;
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pid_t pid2 = 0;
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struct stat statbuf;
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const char* const swap_on_cmd[] = { "/bin/swapon", "swapon", "-a", 0};
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const char* const init_commands[] = { INITSCRIPT, INITSCRIPT, 0};
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const char* const shell_commands[] = { SHELL, "-" SHELL, 0};
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const char* const* tty0_commands = init_commands;
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const char* const* tty0_commands = shell_commands;
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const char* const* tty1_commands = shell_commands;
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#ifdef DEBUG_INIT
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char *hello_msg_format =
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@ -349,9 +372,15 @@ extern int init_main(int argc, char **argv)
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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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/* Check if we are supposed to be in single user mode */
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if ( argc > 1 && (!strcmp(argv[1], "single") ||
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!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
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run_rc = FALSE;
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}
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/* Set up sig handlers -- be sure to
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* clear all of these in run() */
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signal(SIGUSR1, halt_signal);
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@ -364,6 +393,7 @@ extern int init_main(int argc, char **argv)
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#ifndef DEBUG_INIT
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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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@ -375,9 +405,9 @@ extern int init_main(int argc, char **argv)
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setsid();
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/* Make sure PATH is set to something sane */
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if (getenv("PATH") == NULL)
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putenv(PATH_DEFAULT);
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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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@ -397,44 +427,17 @@ extern int init_main(int argc, char **argv)
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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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set_free_pages();
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if (mem_total() < 3500) {
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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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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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} else {
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/* Try to turn on swap */
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waitfor(run(swap_on_cmd, log, FALSE));
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if (mem_total() < 2000) {
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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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}
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}
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}
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/* Make sure there is enough memory to do something useful. */
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check_memory();
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/* Check if we are supposed to be in single user mode */
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if ( argc > 1 && (!strcmp(argv[1], "single") ||
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!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
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run_rc = FALSE;
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wait_for_enter = TRUE;
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tty0_commands = shell_commands;
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tty1_commands = shell_commands;
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}
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/* Make sure an init script exists before trying to run it */
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if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)) {
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wait_for_enter = TRUE;
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tty0_commands = shell_commands;
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tty1_commands = shell_commands;
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if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) {
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wait_for_enter = FALSE;
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tty0_commands = init_commands;
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}
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/* Ok, now launch the rc script and/or prepare to
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* start up some VTs if somebody hits enter...
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*/
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@ -452,9 +455,14 @@ extern int init_main(int argc, char **argv)
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if (wpid > 0 ) {
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message(log, "pid %d exited, status=%x.\n", wpid, status);
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}
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/* Don't respawn an init script if it exits */
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if (run_rc == FALSE && wpid == pid1) {
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if (wpid == pid1) {
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pid1 = 0;
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if (run_rc == TRUE) {
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/* Don't respawn init script if it exits. */
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run_rc=FALSE;
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wait_for_enter=TRUE;
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tty0_commands=shell_commands;
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}
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}
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if (wpid == pid2) {
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pid2 = 0;
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186
init/init.c
186
init/init.c
@ -45,17 +45,17 @@
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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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#define VT_LOG "/dev/tty2" /* Virtual console master */
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#define VT_PRIMARY "/dev/tty0" /* Primary virtual console */
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#define VT_SECONDARY "/dev/tty1" /* Virtual console */
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#define VT_LOG "/dev/tty2" /* Virtual console */
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#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
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#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
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#define SHELL "/bin/sh" /* Default shell */
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//#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */
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#define INITSCRIPT "/tmp/foo.sh"
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#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */
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#define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin"
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static char *console = CONSOLE;
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//static char *first_terminal = "/dev/tty1";
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static char *second_terminal = "/dev/tty2";
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static char *console = VT_PRIMARY;
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static char *second_terminal = VT_SECONDARY;
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static char *log = "/dev/tty3";
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@ -114,7 +114,7 @@ void set_term( int fd)
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/* input modes */
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tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
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/* use lineo dicipline 0 */
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/* use line dicipline 0 */
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tty.c_line = 0;
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/* output modes */
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@ -129,14 +129,18 @@ void set_term( int fd)
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tcsetattr(fd, TCSANOW, &tty);
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}
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/* How much memory does this machine have? */
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static int mem_total()
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{
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char s[80];
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char *p;
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char *p = "/proc/meminfo";
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FILE *f;
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const char pattern[] = "MemTotal:";
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f = fopen("/proc/meminfo", "r");
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if ((f = fopen(p, "r")) < 0) {
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message(log, "Error opening %s: %s\n", p, strerror( errno));
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return -1;
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}
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while (NULL != fgets(s, 79, f)) {
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p = strstr(s, pattern);
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if (NULL != p) {
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@ -147,60 +151,53 @@ static int mem_total()
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return -1;
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}
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static void set_free_pages()
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{
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char s[80];
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FILE *f;
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f = fopen("/proc/sys/vm/freepages", "r");
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fgets(s, 79, f);
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if (atoi(s) < 32) {
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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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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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static void console_init()
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{
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int fd;
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struct stat statbuf;
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int tried_devcons = 0;
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int tried_vtmaster = 0;
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int tried_vtprimary = 0;
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char *s;
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if ((s = getenv("CONSOLE")) != NULL)
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if ((s = getenv("CONSOLE")) != NULL) {
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console = s;
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else {
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console = CONSOLE;
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tried_devcons++;
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/* Apparently the sparc does wierd things... */
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#if defined (__sparc__)
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if (strncmp( s, "/dev/tty", 8 )==0) {
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switch( s[8]) {
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case 'a':
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s=SERIAL_CON0;
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break;
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case 'b':
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s=SERIAL_CON1;
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}
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}
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#endif
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} else {
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console = VT_PRIMARY;
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tried_vtprimary++;
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}
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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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||||
}
|
||||
while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
|
||||
/* Can't open selected console -- try vt1 */
|
||||
if (!tried_vtprimary) {
|
||||
tried_vtprimary++;
|
||||
console = VT_PRIMARY;
|
||||
continue;
|
||||
}
|
||||
/* Can't open selected console -- try /dev/console */
|
||||
if (!tried_devcons) {
|
||||
tried_devcons++;
|
||||
console = CONSOLE;
|
||||
continue;
|
||||
}
|
||||
if (!tried_vtmaster) {
|
||||
tried_vtmaster++;
|
||||
console = VT_PRIMARY;
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (fd < 0)
|
||||
/* Perhaps we should panic here? */
|
||||
console = "/dev/null";
|
||||
else
|
||||
close(fd);
|
||||
message(log, "console=%s\n", console);
|
||||
message(log, "console=%s\n", console );
|
||||
}
|
||||
|
||||
static int waitfor(int pid)
|
||||
@ -221,7 +218,7 @@ static pid_t run(const char * const* command,
|
||||
{
|
||||
int fd;
|
||||
pid_t pid;
|
||||
const char * const* cmd = command;
|
||||
const char * const* cmd = command+1;
|
||||
static const char press_enter[] =
|
||||
"\nPlease press Enter to activate this console. ";
|
||||
|
||||
@ -262,7 +259,7 @@ static pid_t run(const char * const* command,
|
||||
}
|
||||
|
||||
/* Log the process name and args */
|
||||
message(log, "Executing pid(%d): '", getpid());
|
||||
message(log, "Starting pid(%d): '", getpid());
|
||||
while ( *cmd) message(log, "%s ", *cmd++);
|
||||
message(log, "'\r\n");
|
||||
|
||||
@ -270,12 +267,39 @@ static pid_t run(const char * const* command,
|
||||
* so nothing further in init.c should be run. */
|
||||
execvp(*command, (char**)command+1);
|
||||
|
||||
message(log, "Bummer, could not execute '%s'\n", command);
|
||||
message(log, "Bummer, could not run '%s'\n", command);
|
||||
exit(-1);
|
||||
}
|
||||
return pid;
|
||||
}
|
||||
|
||||
/* Make sure there is enough memory to do something useful. *
|
||||
* Calls swapon if needed so be sure /proc is mounted. */
|
||||
static void check_memory()
|
||||
{
|
||||
struct stat statbuf;
|
||||
const char* const swap_on_cmd[] =
|
||||
{ "/bin/swapon", "swapon", "-a", 0};
|
||||
const char *no_memory =
|
||||
"Sorry, your computer does not have enough memory.\r\n";
|
||||
|
||||
if (mem_total() > 3500)
|
||||
return;
|
||||
|
||||
if (stat("/etc/fstab", &statbuf) == 0) {
|
||||
/* Try to turn on swap */
|
||||
waitfor(run(swap_on_cmd, log, FALSE));
|
||||
if (mem_total() < 3500)
|
||||
goto goodnight;
|
||||
} else
|
||||
goto goodnight;
|
||||
return;
|
||||
|
||||
goodnight:
|
||||
message(console, "%s", no_memory);
|
||||
while (1) sleep(1);
|
||||
}
|
||||
|
||||
static void shutdown_system(void)
|
||||
{
|
||||
const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0};
|
||||
@ -333,14 +357,13 @@ static void reboot_signal(int sig)
|
||||
extern int init_main(int argc, char **argv)
|
||||
{
|
||||
int run_rc = TRUE;
|
||||
int wait_for_enter = FALSE;
|
||||
int wait_for_enter = TRUE;
|
||||
pid_t pid1 = 0;
|
||||
pid_t pid2 = 0;
|
||||
struct stat statbuf;
|
||||
const char* const swap_on_cmd[] = { "/bin/swapon", "swapon", "-a", 0};
|
||||
const char* const init_commands[] = { INITSCRIPT, INITSCRIPT, 0};
|
||||
const char* const shell_commands[] = { SHELL, "-" SHELL, 0};
|
||||
const char* const* tty0_commands = init_commands;
|
||||
const char* const* tty0_commands = shell_commands;
|
||||
const char* const* tty1_commands = shell_commands;
|
||||
#ifdef DEBUG_INIT
|
||||
char *hello_msg_format =
|
||||
@ -349,9 +372,15 @@ extern int init_main(int argc, char **argv)
|
||||
char *hello_msg_format =
|
||||
"init started: BusyBox v%s (%s) multi-call binary\r\n";
|
||||
#endif
|
||||
const char *no_memory =
|
||||
"Sorry, your computer does not have enough memory.\r\n";
|
||||
|
||||
|
||||
/* Check if we are supposed to be in single user mode */
|
||||
if ( argc > 1 && (!strcmp(argv[1], "single") ||
|
||||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
|
||||
run_rc = FALSE;
|
||||
}
|
||||
|
||||
|
||||
/* Set up sig handlers -- be sure to
|
||||
* clear all of these in run() */
|
||||
signal(SIGUSR1, halt_signal);
|
||||
@ -364,6 +393,7 @@ extern int init_main(int argc, char **argv)
|
||||
#ifndef DEBUG_INIT
|
||||
reboot(RB_DISABLE_CAD);
|
||||
#endif
|
||||
|
||||
/* Figure out where the default console should be */
|
||||
console_init();
|
||||
|
||||
@ -375,9 +405,9 @@ extern int init_main(int argc, char **argv)
|
||||
setsid();
|
||||
|
||||
/* Make sure PATH is set to something sane */
|
||||
if (getenv("PATH") == NULL)
|
||||
putenv(PATH_DEFAULT);
|
||||
putenv(PATH_DEFAULT);
|
||||
|
||||
|
||||
/* Hello world */
|
||||
#ifndef DEBUG_INIT
|
||||
message(log, hello_msg_format, BB_VER, BB_BT);
|
||||
@ -397,44 +427,17 @@ extern int init_main(int argc, char **argv)
|
||||
message(console, "Mounting /proc: failed!\n");
|
||||
}
|
||||
|
||||
/* Make sure there is enough memory to do something useful */
|
||||
set_free_pages();
|
||||
if (mem_total() < 3500) {
|
||||
int retval;
|
||||
retval = stat("/etc/fstab", &statbuf);
|
||||
if (retval) {
|
||||
message(console, "%s", no_memory);
|
||||
while (1) {
|
||||
sleep(1);
|
||||
}
|
||||
} else {
|
||||
/* Try to turn on swap */
|
||||
waitfor(run(swap_on_cmd, log, FALSE));
|
||||
if (mem_total() < 2000) {
|
||||
message(console, "%s", no_memory);
|
||||
while (1) {
|
||||
sleep(1);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Make sure there is enough memory to do something useful. */
|
||||
check_memory();
|
||||
|
||||
/* Check if we are supposed to be in single user mode */
|
||||
if ( argc > 1 && (!strcmp(argv[1], "single") ||
|
||||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
|
||||
run_rc = FALSE;
|
||||
wait_for_enter = TRUE;
|
||||
tty0_commands = shell_commands;
|
||||
tty1_commands = shell_commands;
|
||||
}
|
||||
|
||||
/* Make sure an init script exists before trying to run it */
|
||||
if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)) {
|
||||
wait_for_enter = TRUE;
|
||||
tty0_commands = shell_commands;
|
||||
tty1_commands = shell_commands;
|
||||
if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) {
|
||||
wait_for_enter = FALSE;
|
||||
tty0_commands = init_commands;
|
||||
}
|
||||
|
||||
|
||||
/* Ok, now launch the rc script and/or prepare to
|
||||
* start up some VTs if somebody hits enter...
|
||||
*/
|
||||
@ -452,9 +455,14 @@ extern int init_main(int argc, char **argv)
|
||||
if (wpid > 0 ) {
|
||||
message(log, "pid %d exited, status=%x.\n", wpid, status);
|
||||
}
|
||||
/* Don't respawn an init script if it exits */
|
||||
if (run_rc == FALSE && wpid == pid1) {
|
||||
if (wpid == pid1) {
|
||||
pid1 = 0;
|
||||
if (run_rc == TRUE) {
|
||||
/* Don't respawn init script if it exits. */
|
||||
run_rc=FALSE;
|
||||
wait_for_enter=TRUE;
|
||||
tty0_commands=shell_commands;
|
||||
}
|
||||
}
|
||||
if (wpid == pid2) {
|
||||
pid2 = 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user