Init is now _more_ perfect then before.

-Erik
author: Erik Andersen <andersen@codepoet.org> 2000-01-07 02:54:55 +0000
committer: Erik Andersen <andersen@codepoet.org> 2000-01-07 02:54:55 +0000
commit: 0e3782f7c39c3caa2debae7a79495fc0732cc827 (patch)
tree: 8abea7bdede9ca3f46e8a020499d21ba6d72371a /init
parent: 9324b400abe4365e5e50d1d4e5e155d1f708dbc0 (diff)
download: busybox-w32-0e3782f7c39c3caa2debae7a79495fc0732cc827.tar.gz
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1 files changed, 60 insertions, 37 deletions
diff --git a/init/init.c b/init/init.c
index 95c2322f7..0472208c5 100644
--- a/init/init.c
+++ b/init/init.c
@@ -319,22 +319,6 @@ static void console_init()
    message(LOG, "console=%s\n", console );
 }
-static int waitfor(int pid)
-{
-    int status, wpid;
-    while (1) {
-        wpid = wait(&status);
-        if (wpid > 0 ) {
-            message(LOG, "pid %d exited, status=0x%x.\n", wpid, status);
-            break;
-        }
-        if (wpid == pid )
-            break;
-    }
-    return wpid;
-}
 static pid_t run(char* command, 
        char *terminal, int get_enter)
 {
@@ -415,18 +399,37 @@ static pid_t run(char* command,
    return pid;
 }
+static int waitfor(char* command, 
+        char *terminal, int get_enter)
+{
+    int status, wpid;
+    int pid = run( command, terminal, get_enter);
+    while (1) {
+        wpid = wait(&status);
+        if (wpid > 0 ) {
+            message(LOG, "Process '%s' (pid %d) exited.\n", 
+                            command, wpid);
+            break;
+        }
+        if (wpid == pid )
+            break;
+    }
+    return wpid;
+}
 /* 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;
+    struct stat statBuf;
    if (mem_total() > 3500)
        return;
-    if (stat("/etc/fstab", &statbuf) == 0) {
+    if (stat("/etc/fstab", &statBuf) == 0) {
        /* Try to turn on swap */
-        waitfor(run("/bin/swapon swapon -a", log, FALSE));
+        waitfor("/bin/swapon swapon -a", log, FALSE);
        if (mem_total() < 3500)
            goto goodnight;
    } else
@@ -457,13 +460,12 @@ static void shutdown_system(void)
    sleep(1);
    message(CONSOLE, "Disabling swap.\r\n");
-    waitfor(run( "swapoff -a", console, FALSE));
+    waitfor( "swapoff -a", console, FALSE);
    message(CONSOLE, "Unmounting filesystems.\r\n");
-    waitfor(run( "umount -a", console, FALSE));
+    waitfor("umount -a", console, FALSE);
    sync();
    if (kernel_version > 0 && kernel_version <= 2 * 65536 + 2 * 256 + 11) {
        /* bdflush, kupdate not needed for kernels >2.2.11 */
-        message(CONSOLE, "Flushing buffers.\r\n");
        bdflush(1, 0);
        sync();
    }
@@ -503,23 +505,26 @@ void new_initAction (const struct initActionType *a,
    /* If BusyBox detects that a serial console is in use, 
     * then entries containing non-empty id fields will _not_ be run.
     */
-    if (second_console != NULL && *cons != '\0')
+    if (second_console == NULL && *cons != '\0') {
        return;
+    }
    newAction = calloc ((size_t)(1), sizeof(initAction));
    if (!newAction) {
-        fprintf(stderr, "Memory allocation failure\n");
+        message(LOG|CONSOLE,"Memory allocation failure\n");
        while (1) sleep(1);
    }
    newAction->nextPtr = initActionList;
    initActionList = newAction;
    strncpy( newAction->process, process, 255);
    newAction->action = a->action;
-    if (*cons != '\0')
+    if (*cons != '\0') {
        strncpy(newAction->console, cons, 255);
-    else
+    } else
        strncpy(newAction->console, console, 255);
    newAction->pid = 0;
+    message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
+            newAction->process, newAction->action, newAction->console);
 }
 void delete_initAction (initAction *action)
@@ -545,7 +550,7 @@ void parse_inittab(void)
 {
 #ifdef BB_FEATURE_USE_INITTAB
    FILE* file;
-    char buf[256], buf1[256];
+    char buf[256], lineAsRead[256], tmpConsole[256];
    char *p, *q, *r, *s;
    const struct initActionType *a = actions;
    int foundIt;
@@ -578,7 +583,8 @@ void parse_inittab(void)
            *q='\0';
        /* Keep a copy around for posterity's sake (and error msgs) */
-        strcpy(buf1, buf);
+        strcpy(lineAsRead, buf);
+message(LOG|CONSOLE, "read='%s'\n", lineAsRead);
        /* Grab the ID field */
        s=p;
@@ -592,7 +598,7 @@ void parse_inittab(void)
         * of the string */
        q = strrchr( p, ':');
        if ( q == NULL || *(q+1) == '\0' ) {
-            fprintf(stderr, "Bad inittab entry: %s\n", buf1);
+            message(LOG|CONSOLE,"Bad inittab entry: %s\n", lineAsRead);
            continue;
        } else {
            *q='\0';
@@ -602,7 +608,7 @@ void parse_inittab(void)
        /* Now peal off the action field */
        r = strrchr( p, ':');
        if ( r == NULL || *(r+1) == '\0') {
-            fprintf(stderr, "Bad inittab entry: %s\n", buf1);
+            message(LOG|CONSOLE,"Bad inittab entry: %s\n", lineAsRead);
            continue;
        } else {
            ++r;
@@ -612,6 +618,16 @@ void parse_inittab(void)
        a = actions;
        while (a->name != 0) {
            if (strcmp(a->name, r) == 0) {
+                if (*s != '\0') {
+                    struct stat statBuf;
+                    strcpy(tmpConsole, "/dev/");
+                    strncat(tmpConsole, s, 200);
+                    if (stat(tmpConsole, &statBuf) != 0) {
+                        message(LOG|CONSOLE, "device '%s' does not exist.  Did you read the directions?\n", tmpConsole);
+                        break;
+                    }
+                    s = tmpConsole;
+                }
                new_initAction( a, q, s);
                foundIt=TRUE;
            }
@@ -621,7 +637,7 @@ void parse_inittab(void)
            continue;
        else {
            /* Choke on an unknown action */
-            fprintf(stderr, "Bad inittab entry: %s\n", buf1);
+            message(LOG|CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
        }
    }
    return;
@@ -670,11 +686,11 @@ extern int init_main(int argc, char **argv)
   
    /* Hello world */
 #ifndef DEBUG_INIT
-    message(CONSOLE|LOG, 
+    message(LOG|CONSOLE, 
            "init started:  BusyBox v%s (%s) multi-call binary\r\n", 
            BB_VER, BB_BT);
 #else
-    message(CONSOLE|LOG, 
+    message(LOG|CONSOLE, 
            "init(%d) started:  BusyBox v%s (%s) multi-call binary\r\n", 
            getpid(), BB_VER, BB_BT);
 #endif
@@ -682,10 +698,10 @@ extern int init_main(int argc, char **argv)
    
    /* Mount /proc */
    if (mount ("proc", "/proc", "proc", 0, 0) == 0) {
-        message(CONSOLE|LOG, "Mounting /proc: done.\n");
+        message(LOG|CONSOLE, "Mounting /proc: done.\n");
        kernel_version = get_kernel_revision();
    } else
-        message(CONSOLE|LOG, "Mounting /proc: failed!\n");
+        message(LOG|CONSOLE, "Mounting /proc: failed!\n");
    /* Make sure there is enough memory to do something useful. */
    check_memory();
@@ -711,10 +727,11 @@ extern int init_main(int argc, char **argv)
    /* Now run everything that needs to be run */
+    message(LOG|CONSOLE, "Running SYSINIT\n");
    /* First run the sysinit command */
    for( a=initActionList ; a; a=a->nextPtr) {
        if (a->action == SYSINIT) {
-            waitfor(run(a->process, console, FALSE));
+            waitfor(a->process, console, FALSE);
            /* Now remove the "sysinit" entry from the list */
            delete_initAction( a);
        }
@@ -722,7 +739,7 @@ extern int init_main(int argc, char **argv)
    /* Next run anything that wants to block */
    for( a=initActionList ; a; a=a->nextPtr) {
        if (a->action == WAIT) {
-            waitfor(run(a->process, console, FALSE));
+            waitfor(a->process, console, FALSE);
            /* Now remove the "wait" entry from the list */
            delete_initAction( a);
        }
@@ -735,9 +752,15 @@ extern int init_main(int argc, char **argv)
            delete_initAction( a);
        }
    }
+    /* If there is nothing else to do, stop */
+    if (initActionList == NULL) {
+        message(LOG|CONSOLE, "No more tasks for init -- sleeping forever.\n");
+        while (1) sleep(1);
+    }
    /* Now run the looping stuff for the rest of forever */
    while (1) {
+        message(LOG|CONSOLE, "Looping\n");
        for( a=initActionList ; a; a=a->nextPtr) {
            /* Only run stuff with pid==0.  If they have
             * a pid, that means they are still running */
author	Erik Andersen <andersen@codepoet.org>	2000-01-07 02:54:55 +0000
committer	Erik Andersen <andersen@codepoet.org>	2000-01-07 02:54:55 +0000
commit	0e3782f7c39c3caa2debae7a79495fc0732cc827 (patch)
tree	8abea7bdede9ca3f46e8a020499d21ba6d72371a /init
parent	9324b400abe4365e5e50d1d4e5e155d1f708dbc0 (diff)
download	busybox-w32-0e3782f7c39c3caa2debae7a79495fc0732cc827.tar.gz busybox-w32-0e3782f7c39c3caa2debae7a79495fc0732cc827.tar.bz2 busybox-w32-0e3782f7c39c3caa2debae7a79495fc0732cc827.zip