Add in some (theoretical) uClinux support. Some init cleanups
diff --git a/init/init.c b/init/init.c
index b6eaa46..1a5056c 100644
--- a/init/init.c
+++ b/init/init.c
@@ -75,6 +75,12 @@
};
+#if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
+ #include <sys/reboot.h>
+ #define init_reboot(magic) reboot(magic)
+#else
+ #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
+#endif
#ifndef RB_HALT_SYSTEM
static const int RB_HALT_SYSTEM = 0xcdef0123;
@@ -84,13 +90,6 @@
static const int RB_AUTOBOOT = 0x01234567;
#endif
-#if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
- #include <sys/reboot.h>
- #define init_reboot(magic) reboot(magic)
-#else
- #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
-#endif
-
#ifndef _PATH_STDPATH
#define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
#endif
@@ -218,7 +217,7 @@
device = CONSOLE;
} else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
log_fd = -2;
- fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
+ fprintf(stderr, "Bummer, can't write to log on %s!\n", log);
log = NULL;
device = CONSOLE;
}
@@ -382,7 +381,7 @@
if (strcmp( termType, "TERM=linux" ) == 0)
safe_strncpy(termType, "TERM=vt102", sizeof(termType));
message(LOG | CONSOLE,
- "serial console detected. Disabling virtual terminals.\r\n");
+ "serial console detected. Disabling virtual terminals.\n");
}
close(fd);
}
@@ -395,7 +394,7 @@
/* Fix up argv[0] to be certain we claim to be init */
len = strlen(argv[0]);
memset(argv[0], 0, len);
- strncpy(argv[0], new_argv0, len);
+ safe_strncpy(argv[0], new_argv0, len + 1);
/* Wipe argv[1]-argv[N] so they don't clutter the ps listing */
len = 1;
@@ -425,7 +424,7 @@
char *environment[MAXENV+1] = {
termType,
"HOME=/",
- "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
+ "PATH=" _PATH_STDPATH,
"SHELL=" SHELL,
"USER=root",
NULL
@@ -444,7 +443,12 @@
}
}
- if ((pid = fork()) == 0) {
+#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
+ if ((pid = fork()) == 0)
+#else
+ if ((pid = vfork()) == 0)
+#endif
+ {
/* Clean up */
ioctl(0, TIOCNOTTY, 0);
close(0);
@@ -465,7 +469,7 @@
terminal);
exit(1);
}
- message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
+ message(LOG | CONSOLE, "Bummer, can't open %s\n", terminal);
exit(1);
}
dup2(fd, 0);
@@ -480,13 +484,16 @@
cmd[0] = SHELL;
cmd[1] = "-c";
strcpy(buf, "exec ");
- strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
+ safe_strncpy(buf + sizeof("exec "), command,
+ sizeof(buf) - sizeof("exec "));
cmd[2] = buf;
cmd[3] = NULL;
} else {
/* Convert command (char*) into cmd (char**, one word per string) */
- for (tmpCmd = command, i = 0;
- (tmpCmd = strsep(&command, " \t")) != NULL;) {
+ safe_strncpy(buf, command, sizeof(buf));
+ s = buf;
+ for (tmpCmd = buf, i = 0;
+ (tmpCmd = strsep(&s, " \t")) != NULL;) {
if (*tmpCmd != '\0') {
cmd[i] = tmpCmd;
tmpCmd++;
@@ -533,7 +540,7 @@
* specifies.
*/
#ifdef DEBUG_INIT
- message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
+ message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\n",
cmd[0], getpid(), terminal);
#endif
write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
@@ -542,7 +549,7 @@
#ifdef DEBUG_INIT
/* Log the process name and args */
- message(LOG, "Starting pid %d, console %s: '%s'\r\n",
+ message(LOG, "Starting pid %d, console %s: '%s'\n",
getpid(), terminal, command);
#endif
@@ -592,6 +599,7 @@
if (check_free_memory() > 1000)
return;
+#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
if (stat("/etc/fstab", &statBuf) == 0) {
/* swapon -a requires /proc typically */
waitfor("mount proc /proc -t proc", console, FALSE);
@@ -602,10 +610,11 @@
} else
goto goodnight;
return;
+#endif
goodnight:
message(CONSOLE,
- "Sorry, your computer does not have enough memory.\r\n");
+ "Sorry, your computer does not have enough memory.\n");
loop_forever();
}
@@ -627,22 +636,29 @@
static void shutdown_system(void)
{
- /* first disable our SIGHUP signal */
- signal(SIGHUP, SIG_DFL);
+ /* first disable all our signals */
+ sigemptyset(&block_signals);
+ sigaddset(&block_signals, SIGHUP);
+ sigaddset(&block_signals, SIGCHLD);
+ sigaddset(&block_signals, SIGUSR1);
+ sigaddset(&block_signals, SIGUSR2);
+ sigaddset(&block_signals, SIGINT);
+ sigaddset(&block_signals, SIGTERM);
+ sigprocmask(SIG_BLOCK, &block_signals, NULL);
/* Allow Ctrl-Alt-Del to reboot system. */
init_reboot(RB_ENABLE_CAD);
- message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
+ message(CONSOLE|LOG, "\nThe system is going down NOW !!\n");
sync();
/* Send signals to every process _except_ pid 1 */
- message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
+ message(CONSOLE|LOG, "Sending SIGTERM to all processes.\n");
kill(-1, SIGTERM);
sleep(1);
sync();
- message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
+ message(CONSOLE|LOG, "Sending SIGKILL to all processes.\n");
kill(-1, SIGKILL);
sleep(1);
@@ -661,7 +677,7 @@
{
shutdown_system();
message(CONSOLE|LOG,
- "The system is halted. Press %s or turn off power\r\n",
+ "The system is halted. Press %s or turn off power\n",
(secondConsole == NULL) /* serial console */
? "Reset" : "CTRL-ALT-DEL");
sync();
@@ -680,7 +696,7 @@
static void reboot_signal(int sig)
{
shutdown_system();
- message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
+ message(CONSOLE|LOG, "Please stand by while rebooting the system.\n");
sync();
/* allow time for last message to reach serial console */
@@ -701,9 +717,7 @@
static void new_initAction(initActionEnum action, char *process, char *cons)
{
initAction *newAction;
-#ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
initAction *a;
-#endif
if (*cons == '\0')
cons = console;
@@ -723,20 +737,15 @@
message(LOG | CONSOLE, "Memory allocation failure\n");
loop_forever();
}
-#ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
for (a = initActionList; a && a->nextPtr; a = a->nextPtr) ;
if (a) {
a->nextPtr = newAction;
} else {
initActionList = newAction;
}
-#else
- newAction->nextPtr = initActionList;
- initActionList = newAction;
-#endif
- strncpy(newAction->process, process, 255);
+ safe_strncpy(newAction->process, process, 255);
newAction->action = action;
- strncpy(newAction->console, cons, 255);
+ safe_strncpy(newAction->console, cons, 255);
newAction->pid = 0;
// message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
// newAction->process, newAction->action, newAction->console);
@@ -782,16 +791,11 @@
#endif
/* Reboot on Ctrl-Alt-Del */
new_initAction(CTRLALTDEL, "/sbin/reboot", console);
-#ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
/* Umount all filesystems on halt/reboot */
new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
+#if !defined(__UCLIBC__) || defined(__UCLIBC_HAS_MMU__)
/* Swapoff on halt/reboot */
new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
-#else
- /* Swapoff on halt/reboot */
- new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
- /* Umount all filesystems on halt/reboot */
- new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
#endif
/* Askfirst shell on tty1 */
new_initAction(ASKFIRST, LOGIN_SHELL, console);
@@ -916,13 +920,14 @@
/* Figure out what kernel this is running */
kernelVersion = get_kernel_revision();
- /* Figure out where the default console should be */
- console_init();
-
/* Close whatever files are open, and reset the console. */
close(0);
close(1);
close(2);
+
+ /* Figure out where the default console should be */
+ console_init();
+
set_term(0);
chdir("/");
setsid();
@@ -937,14 +942,14 @@
CONSOLE|
#endif
LOG,
- "init started: %s\r\n", full_version);
+ "init started: %s\n", full_version);
#else
message(
#if ! defined CONFIG_FEATURE_EXTRA_QUIET
CONSOLE|
#endif
LOG,
- "init(%d) started: %s\r\n", getpid(), full_version);
+ "init(%d) started: %s\n", getpid(), full_version);
#endif