Apply last_patch93 from vodz:

    andersen@busybox.net wrote:
    >Message: 4
    >Modified Files:
    >       init.c
    >Log Message:
    >Remove code for unsupported kernel versions

    Hmm. Current init.c have check >= 2.2.0 kernel one time too.
    Ok. Last patch removed this point and move common init code to new file for
    /init dir

7 files changed, 61 insertions, 73 deletions

diff --git a/init/Makefile.in b/init/Makefile.in
index 9e2f4bcf7..1eee3d18a 100644
--- a/init/Makefile.in
+++ b/init/Makefile.in
@@ -33,6 +33,28 @@ INIT-$(CONFIG_POWEROFF)			+= poweroff.o
 INIT-$(CONFIG_REBOOT)                   += reboot.o
 INIT-$(CONFIG_START_STOP_DAEMON)        += start_stop_daemon.o
 
+ifeq ($(CONFIG_HALT), y)
+CONFIG_INIT_SHARED=y
+else
+ifeq ($(CONFIG_INIT), y)
+CONFIG_INIT_SHARED=y
+else
+ifeq ($(CONFIG_POWEROFF), y)
+CONFIG_INIT_SHARED=y
+else
+ifeq ($(CONFIG_REBOOT), y)
+CONFIG_INIT_SHARED=y
+else
+CONFIG_INIT_SHARED=n
+endif
+endif
+endif
+endif
+
+ifeq ($(CONFIG_INIT_SHARED), y)
+INIT-$(CONFIG_INIT_SHARED)        += init_shared.o
+endif
+
 libraries-y+=$(INIT_DIR)$(INIT_AR)
 
 $(INIT_DIR)$(INIT_AR): $(patsubst %,$(INIT_DIR)%, $(INIT-y))
diff --git a/init/halt.c b/init/halt.c
index 7e663227c..b9eeaebdd 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -23,19 +23,10 @@
 
 #include "busybox.h"
 #include <signal.h>
+#include "init_shared.h"
+
 
 extern int halt_main(int argc, char **argv)
 {
-#ifdef CONFIG_FEATURE_INITRD
-        /* don't assume init's pid == 1 */
-        long *pid = find_pid_by_name("init");
-        if (!pid || *pid<=0) {
-                pid = find_pid_by_name("linuxrc");
-                if (!pid || *pid<=0)
-                        bb_error_msg_and_die("no process killed");
-        }
-        return(kill(*pid, SIGUSR1));
-#else
-        return(kill(1, SIGUSR1));
-#endif
+        return kill_init(SIGUSR1);
 }
diff --git a/init/init.c b/init/init.c
index d51d29156..1667d58cf 100644
--- a/init/init.c
+++ b/init/init.c
@@ -43,6 +43,10 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include "busybox.h"
+
+#include "init_shared.h"
+
+
 #ifdef CONFIG_SYSLOGD
 # include <sys/syslog.h>
 #endif
@@ -152,7 +156,6 @@ struct init_action {
 
 /* Static variables */
 static struct init_action *init_action_list = NULL;
-static int kernelVersion;
 static char console[CONSOLE_BUFF_SIZE] = _PATH_CONSOLE;
 
 #ifndef CONFIG_SYSLOGD
@@ -764,7 +767,7 @@ static void halt_signal(int sig)
         /* allow time for last message to reach serial console */
         sleep(2);
 
-        if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2, 2, 0))
+        if (sig == SIGUSR2)
                 init_reboot(RB_POWER_OFF);
         else
                 init_reboot(RB_HALT_SYSTEM);
@@ -1014,15 +1017,7 @@ extern int init_main(int argc, char **argv)
         int status;
 
         if (argc > 1 && !strcmp(argv[1], "-q")) {
-                /* don't assume init's pid == 1 */
-                long *pid = find_pid_by_name("init");
-
-                if (!pid || *pid <= 0) {
-                        pid = find_pid_by_name("linuxrc");
-                        if (!pid || *pid <= 0)
-                                bb_error_msg_and_die("no process killed");
-                }
-                return kill(*pid, SIGHUP);
+                return kill_init(SIGHUP);
         }
 #ifndef DEBUG_INIT
         /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
@@ -1049,9 +1044,6 @@ extern int init_main(int argc, char **argv)
         init_reboot(RB_DISABLE_CAD);
 #endif
 
-        /* Figure out what kernel this is running */
-        kernelVersion = get_kernel_revision();
-
         /* Figure out where the default console should be */
         console_init();
 
diff --git a/init/init_shared.c b/init/init_shared.c
new file mode 100644
index 000000000..842942fe3
--- /dev/null
+++ b/init/init_shared.c
@@ -0,0 +1,21 @@
+#include <signal.h>
+#include "busybox.h"
+
+#include "init_shared.h"
+
+
+extern int kill_init(int sig)
+{
+#ifdef CONFIG_FEATURE_INITRD
+        /* don't assume init's pid == 1 */
+        long *pid = find_pid_by_name("init");
+        if (!pid || *pid<=0) {
+                pid = find_pid_by_name("linuxrc");
+                if (!pid || *pid<=0)
+                        bb_error_msg_and_die("no process killed");
+        }
+        return(kill(*pid, sig));
+#else
+        return(kill(1, sig));
+#endif
+}
diff --git a/init/init_shared.h b/init/init_shared.h
new file mode 100644
index 000000000..d10a1bd3b
--- /dev/null
+++ b/init/init_shared.h
@@ -0,0 +1 @@
+extern int kill_init(int sig);
diff --git a/init/poweroff.c b/init/poweroff.c
index aca6e2f25..d78ff4f98 100644
--- a/init/poweroff.c
+++ b/init/poweroff.c
@@ -26,16 +26,5 @@
 
 extern int poweroff_main(int argc, char **argv)
 {
-#ifdef CONFIG_FEATURE_INITRD
-        /* don't assume init's pid == 1 */
-        long *pid = find_pid_by_name("init");
-        if (!pid || *pid<=0) {
-                pid = find_pid_by_name("linuxrc");
-                if (!pid || *pid<=0)
-                        bb_error_msg_and_die("no process killed");
-        }
-        return(kill(*pid, SIGUSR2));
-#else
-        return(kill(1, SIGUSR2));
-#endif
+        return kill_init(SIGUSR2);
 }
diff --git a/init/reboot.c b/init/reboot.c
index 8c380fa6a..be4b97f95 100644
--- a/init/reboot.c
+++ b/init/reboot.c
@@ -27,6 +27,8 @@
 #include <getopt.h>
 
 #include "busybox.h"
+#include "init_shared.h"
+
 
 #if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__) 
   #include <sys/reboot.h>
@@ -42,24 +44,12 @@ static const int RB_AUTOBOOT = 0x01234567;
 
 extern int reboot_main(int argc, char **argv)
 {
-        int delay = 0; /* delay in seconds before rebooting */
-        int rc;
-
-        while ((rc = getopt(argc, argv, "d:")) > 0) {
-                switch (rc) {
-                case 'd':
-                        delay = atoi(optarg);
-                        break;
+        char *delay; /* delay in seconds before rebooting */
 
-                default:
-                        bb_show_usage();
-                        break;
-                }
+        if(bb_getopt_ulflags(argc, argv, "d:", &delay)) {
+                sleep(atoi(delay));
         }
 
-        if(delay > 0)
-                sleep(delay);
-
 #ifdef CONFIG_USER_INIT
                 /* Don't kill ourself */
         signal(SIGTERM,SIG_IGN);
@@ -83,29 +73,11 @@ extern int reboot_main(int argc, char **argv)
                 sleep(1);
 
                 sync();
-                if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
-                        /* bdflush, kupdate not needed for kernels >2.2.11 */
-                        bdflush(1, 0);
-                        sync();
-                }
 
                 init_reboot(RB_AUTOBOOT);
-                exit(0); /* Shrug */
+                return 0; /* Shrug */
 #else
-#ifdef CONFIG_FEATURE_INITRD
-        {
-                /* don't assume init's pid == 1 */
-                long *pid = find_pid_by_name("init");
-                if (!pid || *pid<=0)
-                        pid = find_pid_by_name("linuxrc");
-                if (!pid || *pid<=0)
-                        bb_error_msg_and_die("no process killed");
-                fflush(stdout);
-                return(kill(*pid, SIGTERM));
-        }
-#else
-        return(kill(1, SIGTERM));
-#endif
+        return kill_init(SIGTERM);
 #endif
 }