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This commit is contained in:
Eric Andersen 1999-11-02 19:43:01 +00:00
parent 2f6c04f63c
commit 219d6f5e0c
4 changed files with 198 additions and 182 deletions
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4
busybox.spec
View File

@ -32,8 +32,8 @@ for i in $h ; do
mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' ` mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' `
(cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` ); (cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` );
done done
rm -f $RPM_BUILD_ROOT/bin/ln rm -f $RPM_BUILD_ROOT/bin/busybox
install -m 755 busybox $RPM_BUILD_ROOT/bin/ln install -m 755 busybox $RPM_BUILD_ROOT/bin/busybox
%Clean %Clean
rm -rf $RPM_BUILD_ROOT rm -rf $RPM_BUILD_ROOT

4
examples/busybox.spec
View File

@ -32,8 +32,8 @@ for i in $h ; do
mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' ` mkdir -p $RPM_BUILD_ROOT/`echo $i | sed -e 's/\(^.*\/\)\(.*\)/\1/g' `
(cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` ); (cd $RPM_BUILD_ROOT/bin ; ln -s ln `echo $i | sed -e 's/\(^.*\/\)\(.*\)/\2/g' ` );
done done
rm -f $RPM_BUILD_ROOT/bin/ln rm -f $RPM_BUILD_ROOT/bin/busybox
install -m 755 busybox $RPM_BUILD_ROOT/bin/ln install -m 755 busybox $RPM_BUILD_ROOT/bin/busybox
%Clean %Clean
rm -rf $RPM_BUILD_ROOT rm -rf $RPM_BUILD_ROOT

186
init.c
View File

@ -45,17 +45,17 @@
//#define DEBUG_INIT //#define DEBUG_INIT
#define CONSOLE "/dev/console" /* Logical system console */ #define CONSOLE "/dev/console" /* Logical system console */
#define VT_PRIMARY "/dev/tty0" /* Virtual console master */ #define VT_PRIMARY "/dev/tty0" /* Primary virtual console */
#define VT_SECONDARY "/dev/tty1" /* Virtual console master */ #define VT_SECONDARY "/dev/tty1" /* Virtual console */
#define VT_LOG "/dev/tty2" /* Virtual console master */ #define VT_LOG "/dev/tty2" /* Virtual console */
#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
#define SHELL "/bin/sh" /* Default shell */ #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" #define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin"
static char *console = CONSOLE; static char *console = VT_PRIMARY;
//static char *first_terminal = "/dev/tty1"; static char *second_terminal = VT_SECONDARY;
static char *second_terminal = "/dev/tty2";
static char *log = "/dev/tty3"; static char *log = "/dev/tty3";
@ -114,7 +114,7 @@ void set_term( int fd)
/* input modes */ /* input modes */
tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY; tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
/* use lineo dicipline 0 */ /* use line dicipline 0 */
tty.c_line = 0; tty.c_line = 0;
/* output modes */ /* output modes */
@ -129,14 +129,18 @@ void set_term( int fd)
tcsetattr(fd, TCSANOW, &tty); tcsetattr(fd, TCSANOW, &tty);
} }
/* How much memory does this machine have? */
static int mem_total() static int mem_total()
{ {
char s[80]; char s[80];
char *p; char *p = "/proc/meminfo";
FILE *f; FILE *f;
const char pattern[] = "MemTotal:"; const char pattern[] = "MemTotal:";
f = fopen("/proc/meminfo", "r"); if ((f = fopen(p, "r")) < 0) {
message(log, "Error opening %s: %s\n", p, strerror( errno));
return -1;
}
while (NULL != fgets(s, 79, f)) { while (NULL != fgets(s, 79, f)) {
p = strstr(s, pattern); p = strstr(s, pattern);
if (NULL != p) { if (NULL != p) {
@ -147,60 +151,53 @@ static int mem_total()
return -1; return -1;
} }
static void set_free_pages()
{
char s[80];
FILE *f;
f = fopen("/proc/sys/vm/freepages", "r");
fgets(s, 79, f);
if (atoi(s) < 32) {
fclose(f);
f = fopen("/proc/sys/vm/freepages", "w");
fprintf(f, "30\t40\t50\n");
message(log, "\nIncreased /proc/sys/vm/freepages values to 30/40/50\n");
}
fclose(f);
}
static void console_init() static void console_init()
{ {
int fd; int fd;
struct stat statbuf;
int tried_devcons = 0; int tried_devcons = 0;
int tried_vtmaster = 0; int tried_vtprimary = 0;
char *s; char *s;
if ((s = getenv("CONSOLE")) != NULL) if ((s = getenv("CONSOLE")) != NULL) {
console = s; console = s;
else { /* Apparently the sparc does wierd things... */
console = CONSOLE; #if defined (__sparc__)
tried_devcons++; if (strncmp( s, "/dev/tty", 8 )==0) {
switch( s[8]) {
case 'a':
s=SERIAL_CON0;
break;
case 'b':
s=SERIAL_CON1;
}
}
#endif
} else {
console = VT_PRIMARY;
tried_vtprimary++;
} }
if ( stat(CONSOLE, &statbuf) && S_ISLNK(statbuf.st_mode)) {
fprintf(stderr, "Yikes! /dev/console does not exist or is a symlink.\n");
message(log, "Yikes! /dev/console does not exist or is a symlink.\n");
}
while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) { 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) { if (!tried_devcons) {
tried_devcons++; tried_devcons++;
console = CONSOLE; console = CONSOLE;
continue; continue;
} }
if (!tried_vtmaster) {
tried_vtmaster++;
console = VT_PRIMARY;
continue;
}
break; break;
} }
if (fd < 0) if (fd < 0)
/* Perhaps we should panic here? */
console = "/dev/null"; console = "/dev/null";
else else
close(fd); close(fd);
message(log, "console=%s\n", console); message(log, "console=%s\n", console );
} }
static int waitfor(int pid) static int waitfor(int pid)
@ -221,7 +218,7 @@ static pid_t run(const char * const* command,
{ {
int fd; int fd;
pid_t pid; pid_t pid;
const char * const* cmd = command; const char * const* cmd = command+1;
static const char press_enter[] = static const char press_enter[] =
"\nPlease press Enter to activate this console. "; "\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 */ /* Log the process name and args */
message(log, "Executing pid(%d): '", getpid()); message(log, "Starting pid(%d): '", getpid());
while ( *cmd) message(log, "%s ", *cmd++); while ( *cmd) message(log, "%s ", *cmd++);
message(log, "'\r\n"); 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. */ * so nothing further in init.c should be run. */
execvp(*command, (char**)command+1); 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); exit(-1);
} }
return pid; 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) static void shutdown_system(void)
{ {
const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0}; 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) extern int init_main(int argc, char **argv)
{ {
int run_rc = TRUE; int run_rc = TRUE;
int wait_for_enter = FALSE; int wait_for_enter = TRUE;
pid_t pid1 = 0; pid_t pid1 = 0;
pid_t pid2 = 0; pid_t pid2 = 0;
struct stat statbuf; 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 init_commands[] = { INITSCRIPT, INITSCRIPT, 0};
const char* const shell_commands[] = { SHELL, "-" SHELL, 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; const char* const* tty1_commands = shell_commands;
#ifdef DEBUG_INIT #ifdef DEBUG_INIT
char *hello_msg_format = char *hello_msg_format =
@ -349,8 +372,14 @@ extern int init_main(int argc, char **argv)
char *hello_msg_format = char *hello_msg_format =
"init started: BusyBox v%s (%s) multi-call binary\r\n"; "init started: BusyBox v%s (%s) multi-call binary\r\n";
#endif #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 /* Set up sig handlers -- be sure to
* clear all of these in run() */ * clear all of these in run() */
@ -364,6 +393,7 @@ extern int init_main(int argc, char **argv)
#ifndef DEBUG_INIT #ifndef DEBUG_INIT
reboot(RB_DISABLE_CAD); reboot(RB_DISABLE_CAD);
#endif #endif
/* Figure out where the default console should be */ /* Figure out where the default console should be */
console_init(); console_init();
@ -375,8 +405,8 @@ extern int init_main(int argc, char **argv)
setsid(); setsid();
/* Make sure PATH is set to something sane */ /* Make sure PATH is set to something sane */
if (getenv("PATH") == NULL) putenv(PATH_DEFAULT);
putenv(PATH_DEFAULT);
/* Hello world */ /* Hello world */
#ifndef DEBUG_INIT #ifndef DEBUG_INIT
@ -397,44 +427,17 @@ extern int init_main(int argc, char **argv)
message(console, "Mounting /proc: failed!\n"); message(console, "Mounting /proc: failed!\n");
} }
/* Make sure there is enough memory to do something useful */ /* Make sure there is enough memory to do something useful. */
set_free_pages(); check_memory();
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);
}
}
}
}
/* 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 */ /* Make sure an init script exists before trying to run it */
if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)) { if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) {
wait_for_enter = TRUE; wait_for_enter = FALSE;
tty0_commands = shell_commands; tty0_commands = init_commands;
tty1_commands = shell_commands;
} }
/* Ok, now launch the rc script and/or prepare to /* Ok, now launch the rc script and/or prepare to
* start up some VTs if somebody hits enter... * start up some VTs if somebody hits enter...
*/ */
@ -452,9 +455,14 @@ extern int init_main(int argc, char **argv)
if (wpid > 0 ) { if (wpid > 0 ) {
message(log, "pid %d exited, status=%x.\n", wpid, status); message(log, "pid %d exited, status=%x.\n", wpid, status);
} }
/* Don't respawn an init script if it exits */ if (wpid == pid1) {
if (run_rc == FALSE && wpid == pid1) {
pid1 = 0; 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) { if (wpid == pid2) {
pid2 = 0; pid2 = 0;

186
init/init.c
View File

@ -45,17 +45,17 @@
//#define DEBUG_INIT //#define DEBUG_INIT
#define CONSOLE "/dev/console" /* Logical system console */ #define CONSOLE "/dev/console" /* Logical system console */
#define VT_PRIMARY "/dev/tty0" /* Virtual console master */ #define VT_PRIMARY "/dev/tty0" /* Primary virtual console */
#define VT_SECONDARY "/dev/tty1" /* Virtual console master */ #define VT_SECONDARY "/dev/tty1" /* Virtual console */
#define VT_LOG "/dev/tty2" /* Virtual console master */ #define VT_LOG "/dev/tty2" /* Virtual console */
#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
#define SHELL "/bin/sh" /* Default shell */ #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" #define PATH_DEFAULT "PATH=/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin"
static char *console = CONSOLE; static char *console = VT_PRIMARY;
//static char *first_terminal = "/dev/tty1"; static char *second_terminal = VT_SECONDARY;
static char *second_terminal = "/dev/tty2";
static char *log = "/dev/tty3"; static char *log = "/dev/tty3";
@ -114,7 +114,7 @@ void set_term( int fd)
/* input modes */ /* input modes */
tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY; tty.c_iflag = IGNPAR|ICRNL|IXON|IXOFF|IXANY;
/* use lineo dicipline 0 */ /* use line dicipline 0 */
tty.c_line = 0; tty.c_line = 0;
/* output modes */ /* output modes */
@ -129,14 +129,18 @@ void set_term( int fd)
tcsetattr(fd, TCSANOW, &tty); tcsetattr(fd, TCSANOW, &tty);
} }
/* How much memory does this machine have? */
static int mem_total() static int mem_total()
{ {
char s[80]; char s[80];
char *p; char *p = "/proc/meminfo";
FILE *f; FILE *f;
const char pattern[] = "MemTotal:"; const char pattern[] = "MemTotal:";
f = fopen("/proc/meminfo", "r"); if ((f = fopen(p, "r")) < 0) {
message(log, "Error opening %s: %s\n", p, strerror( errno));
return -1;
}
while (NULL != fgets(s, 79, f)) { while (NULL != fgets(s, 79, f)) {
p = strstr(s, pattern); p = strstr(s, pattern);
if (NULL != p) { if (NULL != p) {
@ -147,60 +151,53 @@ static int mem_total()
return -1; return -1;
} }
static void set_free_pages()
{
char s[80];
FILE *f;
f = fopen("/proc/sys/vm/freepages", "r");
fgets(s, 79, f);
if (atoi(s) < 32) {
fclose(f);
f = fopen("/proc/sys/vm/freepages", "w");
fprintf(f, "30\t40\t50\n");
message(log, "\nIncreased /proc/sys/vm/freepages values to 30/40/50\n");
}
fclose(f);
}
static void console_init() static void console_init()
{ {
int fd; int fd;
struct stat statbuf;
int tried_devcons = 0; int tried_devcons = 0;
int tried_vtmaster = 0; int tried_vtprimary = 0;
char *s; char *s;
if ((s = getenv("CONSOLE")) != NULL) if ((s = getenv("CONSOLE")) != NULL) {
console = s; console = s;
else { /* Apparently the sparc does wierd things... */
console = CONSOLE; #if defined (__sparc__)
tried_devcons++; if (strncmp( s, "/dev/tty", 8 )==0) {
switch( s[8]) {
case 'a':
s=SERIAL_CON0;
break;
case 'b':
s=SERIAL_CON1;
}
}
#endif
} else {
console = VT_PRIMARY;
tried_vtprimary++;
} }
if ( stat(CONSOLE, &statbuf) && S_ISLNK(statbuf.st_mode)) {
fprintf(stderr, "Yikes! /dev/console does not exist or is a symlink.\n");
message(log, "Yikes! /dev/console does not exist or is a symlink.\n");
}
while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) { 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) { if (!tried_devcons) {
tried_devcons++; tried_devcons++;
console = CONSOLE; console = CONSOLE;
continue; continue;
} }
if (!tried_vtmaster) {
tried_vtmaster++;
console = VT_PRIMARY;
continue;
}
break; break;
} }
if (fd < 0) if (fd < 0)
/* Perhaps we should panic here? */
console = "/dev/null"; console = "/dev/null";
else else
close(fd); close(fd);
message(log, "console=%s\n", console); message(log, "console=%s\n", console );
} }
static int waitfor(int pid) static int waitfor(int pid)
@ -221,7 +218,7 @@ static pid_t run(const char * const* command,
{ {
int fd; int fd;
pid_t pid; pid_t pid;
const char * const* cmd = command; const char * const* cmd = command+1;
static const char press_enter[] = static const char press_enter[] =
"\nPlease press Enter to activate this console. "; "\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 */ /* Log the process name and args */
message(log, "Executing pid(%d): '", getpid()); message(log, "Starting pid(%d): '", getpid());
while ( *cmd) message(log, "%s ", *cmd++); while ( *cmd) message(log, "%s ", *cmd++);
message(log, "'\r\n"); 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. */ * so nothing further in init.c should be run. */
execvp(*command, (char**)command+1); 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); exit(-1);
} }
return pid; 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) static void shutdown_system(void)
{ {
const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0}; 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) extern int init_main(int argc, char **argv)
{ {
int run_rc = TRUE; int run_rc = TRUE;
int wait_for_enter = FALSE; int wait_for_enter = TRUE;
pid_t pid1 = 0; pid_t pid1 = 0;
pid_t pid2 = 0; pid_t pid2 = 0;
struct stat statbuf; 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 init_commands[] = { INITSCRIPT, INITSCRIPT, 0};
const char* const shell_commands[] = { SHELL, "-" SHELL, 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; const char* const* tty1_commands = shell_commands;
#ifdef DEBUG_INIT #ifdef DEBUG_INIT
char *hello_msg_format = char *hello_msg_format =
@ -349,8 +372,14 @@ extern int init_main(int argc, char **argv)
char *hello_msg_format = char *hello_msg_format =
"init started: BusyBox v%s (%s) multi-call binary\r\n"; "init started: BusyBox v%s (%s) multi-call binary\r\n";
#endif #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 /* Set up sig handlers -- be sure to
* clear all of these in run() */ * clear all of these in run() */
@ -364,6 +393,7 @@ extern int init_main(int argc, char **argv)
#ifndef DEBUG_INIT #ifndef DEBUG_INIT
reboot(RB_DISABLE_CAD); reboot(RB_DISABLE_CAD);
#endif #endif
/* Figure out where the default console should be */ /* Figure out where the default console should be */
console_init(); console_init();
@ -375,8 +405,8 @@ extern int init_main(int argc, char **argv)
setsid(); setsid();
/* Make sure PATH is set to something sane */ /* Make sure PATH is set to something sane */
if (getenv("PATH") == NULL) putenv(PATH_DEFAULT);
putenv(PATH_DEFAULT);
/* Hello world */ /* Hello world */
#ifndef DEBUG_INIT #ifndef DEBUG_INIT
@ -397,44 +427,17 @@ extern int init_main(int argc, char **argv)
message(console, "Mounting /proc: failed!\n"); message(console, "Mounting /proc: failed!\n");
} }
/* Make sure there is enough memory to do something useful */ /* Make sure there is enough memory to do something useful. */
set_free_pages(); check_memory();
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);
}
}
}
}
/* 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 */ /* Make sure an init script exists before trying to run it */
if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)) { if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) {
wait_for_enter = TRUE; wait_for_enter = FALSE;
tty0_commands = shell_commands; tty0_commands = init_commands;
tty1_commands = shell_commands;
} }
/* Ok, now launch the rc script and/or prepare to /* Ok, now launch the rc script and/or prepare to
* start up some VTs if somebody hits enter... * start up some VTs if somebody hits enter...
*/ */
@ -452,9 +455,14 @@ extern int init_main(int argc, char **argv)
if (wpid > 0 ) { if (wpid > 0 ) {
message(log, "pid %d exited, status=%x.\n", wpid, status); message(log, "pid %d exited, status=%x.\n", wpid, status);
} }
/* Don't respawn an init script if it exits */ if (wpid == pid1) {
if (run_rc == FALSE && wpid == pid1) {
pid1 = 0; 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) { if (wpid == pid2) {
pid2 = 0; pid2 = 0;