diff options
| -rw-r--r-- | Makefile | 6 | ||||
| -rw-r--r-- | busybox.def.h | 8 | ||||
| -rw-r--r-- | busybox.spec | 4 | ||||
| -rw-r--r-- | examples/busybox.spec | 4 | ||||
| -rw-r--r-- | init.c | 98 | ||||
| -rw-r--r-- | init/init.c | 98 | ||||
| -rw-r--r-- | utility.c | 2 |
7 files changed, 118 insertions, 102 deletions
@@ -17,12 +17,12 @@ PROG=busybox -VERSION=0.31 +VERSION=0.32 BUILDTIME=$(shell date "+%Y%m%d-%H%M") # Comment out the following to make a debuggable build # Leave this off for production use. -DODEBUG=true +DODEBUG=false # If you want a static binary, turn this on. I can't think # of many situations where anybody would ever want it static, # but... @@ -34,7 +34,7 @@ ARCH=`uname -m | sed -e 's/i.86/i386/' | sed -e 's/sparc.*/sparc/'` # -D_GNU_SOURCE is needed because environ is used in init.c ifeq ($(DODEBUG),true) - CFLAGS=-Wall -g -D_GNU_SOURCE + CFLAGS=-Wall -g -D_GNU_SOURCE -DDEBUG_INIT STRIP= LDFLAGS= else diff --git a/busybox.def.h b/busybox.def.h index 57f835e..0440b9f 100644 --- a/busybox.def.h +++ b/busybox.def.h @@ -15,12 +15,12 @@ #define BB_DMESG //#define BB_DUTMP //#define BB_FDFLUSH -//#define BB_FIND -//#define BB_FSCK_MINIX -//#define BB_MKFS_MINIX +#define BB_FIND +#define BB_FSCK_MINIX +#define BB_MKFS_MINIX #define BB_CHVT #define BB_DEALLOCVT -//#define BB_GREP +#define BB_GREP //#define BB_HALT #define BB_INIT #define BB_KILL diff --git a/busybox.spec b/busybox.spec index 281a381..4227256 100644 --- a/busybox.spec +++ b/busybox.spec @@ -1,5 +1,5 @@ Name: busybox -Version: 0.29alpha +Version: 0.32 Release: 1 Group: System/Utilities Summary: BusyBox is a tiny suite of Unix utilities in a multi-call binary. @@ -7,7 +7,7 @@ Copyright: GPL Packager : Erik Andersen <andersen@lineo.com> Conflicts: fileutils grep shellutils Buildroot: /tmp/%{Name}-%{Version} -Source: busybox-0.29a1.tar.gz +Source: busybox-0.32.tar.gz %Description BusyBox is a suite of "tiny" Unix utilities in a multi-call binary. It diff --git a/examples/busybox.spec b/examples/busybox.spec index 281a381..4227256 100644 --- a/examples/busybox.spec +++ b/examples/busybox.spec @@ -1,5 +1,5 @@ Name: busybox -Version: 0.29alpha +Version: 0.32 Release: 1 Group: System/Utilities Summary: BusyBox is a tiny suite of Unix utilities in a multi-call binary. @@ -7,7 +7,7 @@ Copyright: GPL Packager : Erik Andersen <andersen@lineo.com> Conflicts: fileutils grep shellutils Buildroot: /tmp/%{Name}-%{Version} -Source: busybox-0.29a1.tar.gz +Source: busybox-0.32.tar.gz %Description BusyBox is a suite of "tiny" Unix utilities in a multi-call binary. It @@ -42,14 +42,15 @@ #include <sys/ioctl.h> /* Turn this on to debug init so it won't reboot when killed */ -#define DEBUG_INIT +//#define DEBUG_INIT #define CONSOLE "/dev/console" /* Logical system console */ #define VT_PRIMARY "/dev/tty0" /* Virtual console master */ #define VT_SECONDARY "/dev/tty1" /* Virtual console master */ #define VT_LOG "/dev/tty2" /* Virtual console master */ #define SHELL "/bin/sh" /* Default shell */ -#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */ +//#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */ +#define INITSCRIPT "/tmp/foo.sh" #define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin" static char *console = CONSOLE; @@ -218,8 +219,9 @@ static int waitfor(int pid) static pid_t run(const char * const* command, char *terminal, int get_enter) { - int i, f; + int fd; pid_t pid; + const char * const* cmd = command; static const char press_enter[] = "\nPlease press Enter to activate this console. "; @@ -230,13 +232,22 @@ static pid_t run(const char * const* command, close(2); setsid(); - f=open(terminal, O_RDWR); - dup(f); - dup(f); + /* Reset signal handlers set for parent process */ + signal(SIGUSR1, SIG_DFL); + signal(SIGUSR2, SIG_DFL); + signal(SIGINT, SIG_DFL); + signal(SIGTERM, SIG_DFL); + + if ((fd = device_open(terminal, O_RDWR)) < 0) { + message(log, "Bummer, can't open %s\r\n", terminal); + exit(-1); + } + dup(fd); + dup(fd); tcsetpgrp(0, getpgrp()); set_term(0); - if (get_enter) { + if (get_enter==TRUE) { /* * Save memory by not exec-ing anything large (like a shell) * before the user wants it. This is critical if swap is not @@ -251,51 +262,45 @@ static pid_t run(const char * const* command, } /* Log the process name and args */ - + message(log, "Executing pid(%d): '", getpid()); + while ( *cmd) message(log, "%s ", *cmd++); + message(log, "'\r\n"); + /* Now run it. The new program will take over this PID, * so nothing further in init.c should be run. */ - message(log, "Executing '%s', pid(%d)\r\n", *command, getpid()); execvp(*command, (char**)command+1); - message(log, "Hmm. Trying as a script.\r\n"); - /* If shell scripts are not executed, force the issue */ - if (errno == ENOEXEC) { - char * args[16]; - args[0] = SHELL; - args[1] = "-c"; - args[2] = "exec"; - for( i=0 ; i<16 && command[i]; i++) - args[3+i] = (char*)command[i]; - args[i] = NULL; - execvp(*args, (char**)args+1); - } - message(log, "Could not execute '%s'\n", command); + message(log, "Bummer, could not execute '%s'\n", command); exit(-1); } return pid; } -#ifndef DEBUG_INIT static void shutdown_system(void) { - const char* const swap_off_cmd[] = { "/bin/swapoff", "-a", 0}; - const char* const umount_cmd[] = { "/bin/umount", "-a", "-n", 0}; + const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0}; + const char* const umount_cmd[] = { "umount", "umount", "-a", "-n", 0}; message(console, "The system is going down NOW !!\r\n"); sync(); +#ifndef DEBUG_INIT /* Allow Ctrl-Alt-Del to reboot system. */ reboot(RB_ENABLE_CAD); - +#endif /* Send signals to every process _except_ pid 1 */ message(console, "Sending SIGHUP to all processes.\r\n"); +#ifndef DEBUG_INIT kill(-1, SIGHUP); +#endif sleep(2); sync(); message(console, "Sending SIGKILL to all processes.\r\n"); +#ifndef DEBUG_INIT kill(-1, SIGKILL); +#endif sleep(1); - waitfor(run( swap_off_cmd, console, 0)); - waitfor(run( umount_cmd, console, 0)); + waitfor(run( swap_off_cmd, log, FALSE)); + waitfor(run( umount_cmd, log, FALSE)); sync(); if (get_kernel_revision() <= 2 * 65536 + 2 * 256 + 11) { /* Removed bdflush call, kupdate in kernels >2.2.11 */ @@ -309,7 +314,9 @@ static void halt_signal(int sig) shutdown_system(); message(console, "The system is halted. Press CTRL-ALT-DEL or turn off power\r\n"); +#ifndef DEBUG_INIT reboot(RB_POWER_OFF); +#endif exit(0); } @@ -317,45 +324,44 @@ static void reboot_signal(int sig) { shutdown_system(); message(console, "Please stand by while rebooting the system.\r\n"); +#ifndef DEBUG_INIT reboot(RB_AUTOBOOT); +#endif exit(0); } -#endif extern int init_main(int argc, char **argv) { int run_rc = TRUE; + int wait_for_enter = FALSE; pid_t pid1 = 0; pid_t pid2 = 0; struct stat statbuf; - const char* const swap_on_cmd[] = { "/bin/swapon", " -a ", 0}; - const char* const init_commands[] = { SHELL, " -c", " exec ", INITSCRIPT, 0}; - const char* const shell_commands[] = { SHELL, " -", 0}; + 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* tty1_commands = shell_commands; -#ifndef DEBUG_INIT +#ifdef DEBUG_INIT char *hello_msg_format = - "init started: BusyBox v%s (%s) multi-call binary\r\n"; + "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n"; #else char *hello_msg_format = - "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n"; + "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"; -#ifndef DEBUG_INIT - /* Set up sig handlers */ + /* Set up sig handlers -- be sure to + * clear all of these in run() */ signal(SIGUSR1, halt_signal); - signal(SIGSEGV, halt_signal); - signal(SIGPWR, halt_signal); - signal(SIGALRM, halt_signal); - signal(SIGHUP, halt_signal); signal(SIGUSR2, reboot_signal); signal(SIGINT, reboot_signal); signal(SIGTERM, reboot_signal); /* Turn off rebooting via CTL-ALT-DEL -- we get a * SIGINT on CAD so we can shut things down gracefully... */ +#ifndef DEBUG_INIT reboot(RB_DISABLE_CAD); #endif /* Figure out where the default console should be */ @@ -383,7 +389,7 @@ extern int init_main(int argc, char **argv) /* Mount /proc */ - if (mount("/proc", "/proc", "proc", 0, 0) == 0) { + if (mount ("proc", "/proc", "proc", 0, 0) == 0) { message(log, "Mounting /proc: done.\n"); message(console, "Mounting /proc: done.\n"); } else { @@ -403,7 +409,7 @@ extern int init_main(int argc, char **argv) } } else { /* Try to turn on swap */ - waitfor(run(swap_on_cmd, console, 0)); + waitfor(run(swap_on_cmd, log, FALSE)); if (mem_total() < 2000) { message(console, "%s", no_memory); while (1) { @@ -417,12 +423,14 @@ extern int init_main(int argc, char **argv) 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; } @@ -435,10 +443,10 @@ extern int init_main(int argc, char **argv) int status; if (pid1 == 0 && tty0_commands) { - pid1 = run(tty0_commands, console, 1); + pid1 = run(tty0_commands, console, wait_for_enter); } if (pid2 == 0 && tty1_commands) { - pid2 = run(tty1_commands, second_terminal, 1); + pid2 = run(tty1_commands, second_terminal, TRUE); } wpid = wait(&status); if (wpid > 0 ) { diff --git a/init/init.c b/init/init.c index bcc8483..0850cf8 100644 --- a/init/init.c +++ b/init/init.c @@ -42,14 +42,15 @@ #include <sys/ioctl.h> /* Turn this on to debug init so it won't reboot when killed */ -#define DEBUG_INIT +//#define DEBUG_INIT #define CONSOLE "/dev/console" /* Logical system console */ #define VT_PRIMARY "/dev/tty0" /* Virtual console master */ #define VT_SECONDARY "/dev/tty1" /* Virtual console master */ #define VT_LOG "/dev/tty2" /* Virtual console master */ #define SHELL "/bin/sh" /* Default shell */ -#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */ +//#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */ +#define INITSCRIPT "/tmp/foo.sh" #define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin" static char *console = CONSOLE; @@ -218,8 +219,9 @@ static int waitfor(int pid) static pid_t run(const char * const* command, char *terminal, int get_enter) { - int i, f; + int fd; pid_t pid; + const char * const* cmd = command; static const char press_enter[] = "\nPlease press Enter to activate this console. "; @@ -230,13 +232,22 @@ static pid_t run(const char * const* command, close(2); setsid(); - f=open(terminal, O_RDWR); - dup(f); - dup(f); + /* Reset signal handlers set for parent process */ + signal(SIGUSR1, SIG_DFL); + signal(SIGUSR2, SIG_DFL); + signal(SIGINT, SIG_DFL); + signal(SIGTERM, SIG_DFL); + + if ((fd = device_open(terminal, O_RDWR)) < 0) { + message(log, "Bummer, can't open %s\r\n", terminal); + exit(-1); + } + dup(fd); + dup(fd); tcsetpgrp(0, getpgrp()); set_term(0); - if (get_enter) { + if (get_enter==TRUE) { /* * Save memory by not exec-ing anything large (like a shell) * before the user wants it. This is critical if swap is not @@ -251,51 +262,45 @@ static pid_t run(const char * const* command, } /* Log the process name and args */ - + message(log, "Executing pid(%d): '", getpid()); + while ( *cmd) message(log, "%s ", *cmd++); + message(log, "'\r\n"); + /* Now run it. The new program will take over this PID, * so nothing further in init.c should be run. */ - message(log, "Executing '%s', pid(%d)\r\n", *command, getpid()); execvp(*command, (char**)command+1); - message(log, "Hmm. Trying as a script.\r\n"); - /* If shell scripts are not executed, force the issue */ - if (errno == ENOEXEC) { - char * args[16]; - args[0] = SHELL; - args[1] = "-c"; - args[2] = "exec"; - for( i=0 ; i<16 && command[i]; i++) - args[3+i] = (char*)command[i]; - args[i] = NULL; - execvp(*args, (char**)args+1); - } - message(log, "Could not execute '%s'\n", command); + message(log, "Bummer, could not execute '%s'\n", command); exit(-1); } return pid; } -#ifndef DEBUG_INIT static void shutdown_system(void) { - const char* const swap_off_cmd[] = { "/bin/swapoff", "-a", 0}; - const char* const umount_cmd[] = { "/bin/umount", "-a", "-n", 0}; + const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0}; + const char* const umount_cmd[] = { "umount", "umount", "-a", "-n", 0}; message(console, "The system is going down NOW !!\r\n"); sync(); +#ifndef DEBUG_INIT /* Allow Ctrl-Alt-Del to reboot system. */ reboot(RB_ENABLE_CAD); - +#endif /* Send signals to every process _except_ pid 1 */ message(console, "Sending SIGHUP to all processes.\r\n"); +#ifndef DEBUG_INIT kill(-1, SIGHUP); +#endif sleep(2); sync(); message(console, "Sending SIGKILL to all processes.\r\n"); +#ifndef DEBUG_INIT kill(-1, SIGKILL); +#endif sleep(1); - waitfor(run( swap_off_cmd, console, 0)); - waitfor(run( umount_cmd, console, 0)); + waitfor(run( swap_off_cmd, log, FALSE)); + waitfor(run( umount_cmd, log, FALSE)); sync(); if (get_kernel_revision() <= 2 * 65536 + 2 * 256 + 11) { /* Removed bdflush call, kupdate in kernels >2.2.11 */ @@ -309,7 +314,9 @@ static void halt_signal(int sig) shutdown_system(); message(console, "The system is halted. Press CTRL-ALT-DEL or turn off power\r\n"); +#ifndef DEBUG_INIT reboot(RB_POWER_OFF); +#endif exit(0); } @@ -317,45 +324,44 @@ static void reboot_signal(int sig) { shutdown_system(); message(console, "Please stand by while rebooting the system.\r\n"); +#ifndef DEBUG_INIT reboot(RB_AUTOBOOT); +#endif exit(0); } -#endif extern int init_main(int argc, char **argv) { int run_rc = TRUE; + int wait_for_enter = FALSE; pid_t pid1 = 0; pid_t pid2 = 0; struct stat statbuf; - const char* const swap_on_cmd[] = { "/bin/swapon", " -a ", 0}; - const char* const init_commands[] = { SHELL, " -c", " exec ", INITSCRIPT, 0}; - const char* const shell_commands[] = { SHELL, " -", 0}; + 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* tty1_commands = shell_commands; -#ifndef DEBUG_INIT +#ifdef DEBUG_INIT char *hello_msg_format = - "init started: BusyBox v%s (%s) multi-call binary\r\n"; + "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n"; #else char *hello_msg_format = - "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n"; + "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"; -#ifndef DEBUG_INIT - /* Set up sig handlers */ + /* Set up sig handlers -- be sure to + * clear all of these in run() */ signal(SIGUSR1, halt_signal); - signal(SIGSEGV, halt_signal); - signal(SIGPWR, halt_signal); - signal(SIGALRM, halt_signal); - signal(SIGHUP, halt_signal); signal(SIGUSR2, reboot_signal); signal(SIGINT, reboot_signal); signal(SIGTERM, reboot_signal); /* Turn off rebooting via CTL-ALT-DEL -- we get a * SIGINT on CAD so we can shut things down gracefully... */ +#ifndef DEBUG_INIT reboot(RB_DISABLE_CAD); #endif /* Figure out where the default console should be */ @@ -383,7 +389,7 @@ extern int init_main(int argc, char **argv) /* Mount /proc */ - if (mount("/proc", "/proc", "proc", 0, 0) == 0) { + if (mount ("proc", "/proc", "proc", 0, 0) == 0) { message(log, "Mounting /proc: done.\n"); message(console, "Mounting /proc: done.\n"); } else { @@ -403,7 +409,7 @@ extern int init_main(int argc, char **argv) } } else { /* Try to turn on swap */ - waitfor(run(swap_on_cmd, console, 0)); + waitfor(run(swap_on_cmd, log, FALSE)); if (mem_total() < 2000) { message(console, "%s", no_memory); while (1) { @@ -417,12 +423,14 @@ extern int init_main(int argc, char **argv) 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; } @@ -435,10 +443,10 @@ extern int init_main(int argc, char **argv) int status; if (pid1 == 0 && tty0_commands) { - pid1 = run(tty0_commands, console, 1); + pid1 = run(tty0_commands, console, wait_for_enter); } if (pid2 == 0 && tty1_commands) { - pid2 = run(tty1_commands, second_terminal, 1); + pid2 = run(tty1_commands, second_terminal, TRUE); } wpid = wait(&status); if (wpid > 0 ) { @@ -60,7 +60,7 @@ get_kernel_revision() file = fopen(filename,"r"); if (file == NULL) { - perror(filename); + /* bummer, /proc must not be mounted... */ return( 0); } fscanf(file,"%d.%d.%d",&major,&minor,&patch); |