Patch from Jason Schoon to add optional SIGUSR1 support to dd.

[oweals/busybox.git] / init / init.c

diff --git a/init/init.c b/init/init.c
index b7bc7ef9f5752316a576c15fb294c7c13109e9af..22fb33dfd8d3a5b8d07215d072a69f97dfa3079e 100644 (file)
--- a/init/init.c
+++ b/init/init.c
@@ -24,7 +24,7 @@
 #include <termios.h>
 #include <unistd.h>
 #include <limits.h>
-#include <sys/fcntl.h>
+#include <fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -39,6 +39,11 @@
 #endif
 
 
+#ifdef CONFIG_SELINUX
+# include <selinux/selinux.h>
+#endif /* CONFIG_SELINUX */
+
+
 #define INIT_BUFFS_SIZE 256
 
 /* From <linux/vt.h> */
@@ -47,7 +52,7 @@ struct vt_stat {
        unsigned short v_signal;        /* signal to send */
        unsigned short v_state; /* vt bitmask */
 };
-static const int VT_GETSTATE = 0x5603; /* get global vt state info */
+enum { VT_GETSTATE = 0x5603 }; /* get global vt state info */
 
 /* From <linux/serial.h> */
 struct serial_struct {
@@ -145,22 +150,25 @@ static char console[CONSOLE_BUFF_SIZE] = _PATH_CONSOLE;
 static char *log_console = VC_5;
 #endif
 static sig_atomic_t got_cont = 0;
-static const int LOG = 0x1;
-static const int CONSOLE = 0x2;
+
+enum {
+       LOG = 0x1,
+       CONSOLE = 0x2,
 
 #if defined CONFIG_FEATURE_EXTRA_QUIET
-static const int MAYBE_CONSOLE = 0x0;
+       MAYBE_CONSOLE = 0x0,
 #else
-#define MAYBE_CONSOLE  CONSOLE
+       MAYBE_CONSOLE = CONSOLE,
 #endif
-#ifndef RB_HALT_SYSTEM
-static const int RB_HALT_SYSTEM = 0xcdef0123;
-static const int RB_ENABLE_CAD = 0x89abcdef;
-static const int RB_DISABLE_CAD = 0;
 
-#define RB_POWER_OFF    0x4321fedc
-static const int RB_AUTOBOOT = 0x01234567;
+#ifndef RB_HALT_SYSTEM
+       RB_HALT_SYSTEM = 0xcdef0123,
+       RB_ENABLE_CAD = 0x89abcdef,
+       RB_DISABLE_CAD = 0,
+       RB_POWER_OFF = 0x4321fedc,
+       RB_AUTOBOOT = 0x01234567,
 #endif
+};
 
 static const char * const environment[] = {
        "HOME=/",
@@ -617,7 +625,9 @@ static void run_actions(int action)
        for (a = init_action_list; a; a = tmp) {
                tmp = a->next;
                if (a->action == action) {
-                       if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) {
+                       if (access(a->terminal, R_OK | W_OK)) {
+                               delete_init_action(a);
+                       } else if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) {
                                waitfor(a);
                                delete_init_action(a);
                        } else if (a->action & ONCE) {
@@ -812,9 +822,6 @@ static void new_init_action(int action, const char *command, const char *cons)
        if (*cons == '\0')
                cons = console;
 
-       /* do not run entries if console device is not available */
-       if (access(cons, R_OK | W_OK))
-               return;
        if (strcmp(cons, bb_dev_null) == 0 && (action & ASKFIRST))
                return;
 
@@ -1095,6 +1102,22 @@ int init_main(int argc, char **argv)
                parse_inittab();
        }
 
+#ifdef CONFIG_SELINUX
+       if (getenv("SELINUX_INIT") == NULL) {
+               int enforce = 0;
+
+               putenv("SELINUX_INIT=YES");
+               if (selinux_init_load_policy(&enforce) == 0) {
+                       execv(argv[0], argv);
+               } else if (enforce > 0) {
+                       /* SELinux in enforcing mode but load_policy failed */
+                       /* At this point, we probably can't open /dev/console, so log() won't work */
+                       message(CONSOLE,"Unable to load SELinux Policy. Machine is in enforcing mode. Halting now.");
+                       exit(1);
+               }
+       }
+#endif /* CONFIG_SELINUX */
+
        /* Make the command line just say "init"  -- thats all, nothing else */
        fixup_argv(argc, argv, "init");