#define DEBUG_INIT
*/
-#include "internal.h"
+#include "busybox.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
+#include <limits.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
unsigned short v_signal; /* signal to send */
unsigned short v_state; /* vt bitmask */
};
-#define VT_GETSTATE 0x5603 /* get global vt state info */
+static const int VT_GETSTATE = 0x5603; /* get global vt state info */
/* From <linux/serial.h> */
struct serial_struct {
#ifndef RB_HALT_SYSTEM
-#define RB_HALT_SYSTEM 0xcdef0123
-#define RB_ENABLE_CAD 0x89abcdef
-#define RB_DISABLE_CAD 0
+static const int RB_HALT_SYSTEM = 0xcdef0123;
+static const int RB_ENABLE_CAD = 0x89abcdef;
+static const int RB_DISABLE_CAD = 0;
#define RB_POWER_OFF 0x4321fedc
-#define RB_AUTOBOOT 0x01234567
-#if defined(__GLIBC__)
+static const int RB_AUTOBOOT = 0x01234567;
+#if defined(__GLIBC__) || defined (__UCLIBC__)
#include <sys/reboot.h>
#define init_reboot(magic) reboot(magic)
#else
#if defined(__GLIBC__)
#include <sys/kdaemon.h>
#else
+#include <sys/syscall.h>
+#include <linux/unistd.h>
static _syscall2(int, bdflush, int, func, int, data);
#endif /* __GLIBC__ */
#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
#endif
-#define LOG 0x1
-#define CONSOLE 0x2
+static const int LOG = 0x1;
+static const int CONSOLE = 0x2;
/* Allowed init action types */
typedef enum {
tcsetattr(fd, TCSANOW, &tty);
}
-/* How much memory does this machine have? */
+/* How much memory does this machine have?
+ Units are kBytes to avoid overflow on 4GB machines */
static int check_free_memory()
{
struct sysinfo info;
+ unsigned int result, u, s=10;
- /* Pre initialize mem_unit in case this kernel is something prior to
- * the linux 2.4 kernel (which will actually fill in mem_unit... */
- sysinfo(&info);
if (sysinfo(&info) != 0) {
- printf("Error checking free memory: %s\n", strerror(errno));
+ perror_msg("Error checking free memory: ");
return -1;
}
- /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
- if (info.mem_unit==0) {
- info.mem_unit=1;
- }
- info.mem_unit*=1024;
-
- /* Note: These values can in theory overflow a 32 bit unsigned long (i.e.
- * mem >= Gib), but who puts more then 4GiB ram+swap on an embedded
- * system? */
- info.totalram/=info.mem_unit;
- info.totalswap/=info.mem_unit;
- return(info.totalram+info.totalswap);
+
+ /* Kernels 2.0.x and 2.2.x return info.mem_unit==0 with values in bytes.
+ * Kernels 2.4.0 return info.mem_unit in bytes. */
+ u = info.mem_unit;
+ if (u==0) u=1;
+ while ( (u&1) == 0 && s > 0 ) { u>>=1; s--; }
+ result = (info.totalram>>s) + (info.totalswap>>s);
+ result = result*u;
+ if (result < 0) result = INT_MAX;
+ return result;
}
static void console_init()
char buf[255];
static const char press_enter[] =
+#ifdef CUSTOMIZED_BANNER
+#include CUSTOMIZED_BANNER
+#endif
+
"\nPlease press Enter to activate this console. ";
char *environment[] = {
"HOME=/",
* be allowed to start a shell or whatever an init script
* specifies.
*/
- char c;
#ifdef DEBUG_INIT
pid_t shell_pgid = getpid();
message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
command, shell_pgid, terminal);
#endif
write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
- read(fileno(stdin), &c, 1);
+ getc(stdin);
}
#ifdef DEBUG_INIT
#if defined BB_FEATURE_INIT_CHROOT
+#warning BB_FEATURE_INIT_CHROOT is out of date and should be rewritten to us
+#warning pivot root instead. Do not even bother till this work is done...
+#warning You have been warned.
+
#if ! defined BB_FEATURE_USE_PROCFS
#error Sorry, I depend on the /proc filesystem right now.
#endif
/* No inittab file -- set up some default behavior */
#endif
/* Swapoff on halt/reboot */
- new_initAction(CTRLALTDEL, "/sbin/swapoff -a > /dev/null 2>&1", console);
+ new_initAction(CTRLALTDEL, "/sbin/swapoff -a", console);
/* Umount all filesystems on halt/reboot */
- new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console);
+ new_initAction(CTRLALTDEL, "/bin/umount -a -r", console);
/* Askfirst shell on tty1 */
new_initAction(ASKFIRST, SHELL, console);
/* Askfirst shell on tty2 */
}
/* Fix up argv[0] to be certain we claim to be init */
- strncpy(argv[0], "init", strlen(argv[0])+1);
+ argv[0]="init";
+
if (argc > 1)
strncpy(argv[1], "\0", strlen(argv[1])+1);