Update files to reduce dependance on kernel version...

 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@779 69ca8d6d-28ef-0310-b511-8ec308f3f277

23 files changed, 184 insertions, 87 deletions

diff --git a/chvt.c b/chvt.c
index 45a04397a..c5c86b613 100644
--- a/chvt.c
+++ b/chvt.c
@@ -5,12 +5,16 @@
  * busyboxed by Erik Andersen
  */
 #include "internal.h"
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <linux/vt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+/* From <linux/vt.h> */
+#define VT_ACTIVATE     0x5606  /* make vt active */
+#define VT_WAITACTIVE   0x5607  /* wait for vt active */
+
 
 int chvt_main(int argc, char **argv)
 {
diff --git a/console-tools/chvt.c b/console-tools/chvt.c
index 45a04397a..c5c86b613 100644
--- a/console-tools/chvt.c
+++ b/console-tools/chvt.c
@@ -5,12 +5,16 @@
  * busyboxed by Erik Andersen
  */
 #include "internal.h"
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <linux/vt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+/* From <linux/vt.h> */
+#define VT_ACTIVATE     0x5606  /* make vt active */
+#define VT_WAITACTIVE   0x5607  /* wait for vt active */
+
 
 int chvt_main(int argc, char **argv)
 {
diff --git a/console-tools/deallocvt.c b/console-tools/deallocvt.c
index b65f7b098..0cad7717b 100644
--- a/console-tools/deallocvt.c
+++ b/console-tools/deallocvt.c
@@ -5,11 +5,14 @@
  */
 #include "internal.h"
 #include <stdlib.h>
+#include <stdio.h>
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
-#include <linux/vt.h>
-#include <stdio.h>
+
+/* From <linux/vt.h> */
+#define VT_DISALLOCATE  0x5608  /* free memory associated to vt */
+
 
 char *progname;
 
diff --git a/console-tools/loadkmap.c b/console-tools/loadkmap.c
index 905741467..0e8c090d2 100644
--- a/console-tools/loadkmap.c
+++ b/console-tools/loadkmap.c
@@ -24,10 +24,20 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
-#include <linux/kd.h>
-#include <linux/keyboard.h>
 #include <sys/ioctl.h>
 
+/* From <linux/kd.h> */
+struct kbentry {
+        unsigned char kb_table;
+        unsigned char kb_index;
+        unsigned short kb_value;
+};
+#define KDSKBENT        0x4B47  /* sets one entry in translation table */
+
+/* From <linux/keyboard.h> */
+#define NR_KEYS         128
+#define MAX_NR_KEYMAPS  256
+
 
 static const char loadkmap_usage[] = "loadkmap\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
diff --git a/console-tools/setkeycodes.c b/console-tools/setkeycodes.c
index 9062caf75..1bdb909ea 100644
--- a/console-tools/setkeycodes.c
+++ b/console-tools/setkeycodes.c
@@ -27,7 +27,14 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <linux/kd.h>
+
+
+/* From <linux/kd.h> */
+struct kbkeycode {
+        unsigned int scancode, keycode;
+};
+#define KDSETKEYCODE    0x4B4D  /* write kernel keycode table entry */
+
 
 static const char setkeycodes_usage[] =
         "setkeycodes SCANCODE KEYCODE ...\n"
diff --git a/coreutils/ls.c b/coreutils/ls.c
index 75fa65421..98ccbeddb 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -49,11 +49,11 @@
 /************************************************************************/
 
 #include "internal.h"
-#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
-# include <linux/types.h>
-#else
+//#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+//# include <linux/types.h>
+//#else
 # include <sys/types.h>
-#endif
+//#endif
 #include <sys/stat.h>
 #include <stdio.h>
 #include <unistd.h>
diff --git a/deallocvt.c b/deallocvt.c
index b65f7b098..0cad7717b 100644
--- a/deallocvt.c
+++ b/deallocvt.c
@@ -5,11 +5,14 @@
  */
 #include "internal.h"
 #include <stdlib.h>
+#include <stdio.h>
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
-#include <linux/vt.h>
-#include <stdio.h>
+
+/* From <linux/vt.h> */
+#define VT_DISALLOCATE  0x5608  /* free memory associated to vt */
+
 
 char *progname;
 
diff --git a/dmesg.c b/dmesg.c
index 20846f7c6..e88f549ca 100644
--- a/dmesg.c
+++ b/dmesg.c
@@ -16,7 +16,6 @@
  */
 
 #include "internal.h"
-#include <linux/unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -24,6 +23,7 @@
 
 #ifndef __alpha__
 # define __NR_klogctl __NR_syslog
+#include <linux/unistd.h>
 static inline _syscall3(int, klogctl, int, type, char *, b, int, len);
 #else                                                   /* __alpha__ */
 #define klogctl syslog
diff --git a/fdflush.c b/fdflush.c
index 81f0472c6..d9937355f 100644
--- a/fdflush.c
+++ b/fdflush.c
@@ -24,9 +24,10 @@
 #include "internal.h"
 #include <stdio.h>
 #include <sys/ioctl.h>
-#include <linux/fd.h>
 #include <fcntl.h>
 
+/* From <linux/fd.h> */
+#define FDFLUSH  _IO(2,0x4b)
 
 extern int fdflush_main(int argc, char **argv)
 {
diff --git a/init.c b/init.c
index 35f2255b5..b368c00ed 100644
--- a/init.c
+++ b/init.c
@@ -37,12 +37,6 @@
 #include <string.h>
 #include <termios.h>
 #include <unistd.h>
-#include <asm/types.h>
-#include <linux/serial.h>               /* for serial_struct */
-#include <linux/version.h>
-#include <linux/reboot.h>
-#include <linux/unistd.h>
-#include <linux/vt.h>                           /* for vt_stat */
 #include <sys/fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
@@ -52,6 +46,33 @@
 # include <sys/syslog.h>
 #endif
 
+/* From <linux/vt.h> */
+struct vt_stat {
+        unsigned short v_active;        /* active vt */
+        unsigned short v_signal;        /* signal to send */
+        unsigned short v_state;         /* vt bitmask */
+};
+#define VT_GETSTATE     0x5603  /* get global vt state info */
+
+/* From <linux/serial.h> */
+struct serial_struct {
+        int     type;
+        int     line;
+        int     port;
+        int     irq;
+        int     flags;
+        int     xmit_fifo_size;
+        int     custom_divisor;
+        int     baud_base;
+        unsigned short  close_delay;
+        char    reserved_char[2];
+        int     hub6;
+        unsigned short  closing_wait; /* time to wait before closing */
+        unsigned short  closing_wait2; /* no longer used... */
+        int     reserved[4];
+};
+
+
 
 #ifndef RB_HALT_SYSTEM
 #define RB_HALT_SYSTEM  0xcdef0123
@@ -84,13 +105,12 @@
 #include <sys/time.h>
 #endif
 
-#ifndef KERNEL_VERSION
 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
-#endif
 
 #if defined(__GLIBC__)
 #include <sys/kdaemon.h>
 #else
+#include <linux/unistd.h>               /* for _syscall() macro */
 static _syscall2(int, bdflush, int, func, int, data);
 #endif                                                  /* __GLIBC__ */
 
@@ -568,7 +588,7 @@ static void shutdown_system(void)
         run_lastAction();
 
         sync();
-        if (kernelVersion > 0 && kernelVersion <= 2 * 65536 + 2 * 256 + 11) {
+        if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
                 /* bdflush, kupdate not needed for kernels >2.2.11 */
                 bdflush(1, 0);
                 sync();
@@ -587,11 +607,9 @@ static void halt_signal(int sig)
         /* allow time for last message to reach serial console */
         sleep(2);
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
-        if (sig == SIGUSR2)
+        if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
                 init_reboot(RB_POWER_OFF);
         else
-#endif
                 init_reboot(RB_HALT_SYSTEM);
         exit(0);
 }
diff --git a/init/init.c b/init/init.c
index 35f2255b5..b368c00ed 100644
--- a/init/init.c
+++ b/init/init.c
@@ -37,12 +37,6 @@
 #include <string.h>
 #include <termios.h>
 #include <unistd.h>
-#include <asm/types.h>
-#include <linux/serial.h>               /* for serial_struct */
-#include <linux/version.h>
-#include <linux/reboot.h>
-#include <linux/unistd.h>
-#include <linux/vt.h>                           /* for vt_stat */
 #include <sys/fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
@@ -52,6 +46,33 @@
 # include <sys/syslog.h>
 #endif
 
+/* From <linux/vt.h> */
+struct vt_stat {
+        unsigned short v_active;        /* active vt */
+        unsigned short v_signal;        /* signal to send */
+        unsigned short v_state;         /* vt bitmask */
+};
+#define VT_GETSTATE     0x5603  /* get global vt state info */
+
+/* From <linux/serial.h> */
+struct serial_struct {
+        int     type;
+        int     line;
+        int     port;
+        int     irq;
+        int     flags;
+        int     xmit_fifo_size;
+        int     custom_divisor;
+        int     baud_base;
+        unsigned short  close_delay;
+        char    reserved_char[2];
+        int     hub6;
+        unsigned short  closing_wait; /* time to wait before closing */
+        unsigned short  closing_wait2; /* no longer used... */
+        int     reserved[4];
+};
+
+
 
 #ifndef RB_HALT_SYSTEM
 #define RB_HALT_SYSTEM  0xcdef0123
@@ -84,13 +105,12 @@
 #include <sys/time.h>
 #endif
 
-#ifndef KERNEL_VERSION
 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
-#endif
 
 #if defined(__GLIBC__)
 #include <sys/kdaemon.h>
 #else
+#include <linux/unistd.h>               /* for _syscall() macro */
 static _syscall2(int, bdflush, int, func, int, data);
 #endif                                                  /* __GLIBC__ */
 
@@ -568,7 +588,7 @@ static void shutdown_system(void)
         run_lastAction();
 
         sync();
-        if (kernelVersion > 0 && kernelVersion <= 2 * 65536 + 2 * 256 + 11) {
+        if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
                 /* bdflush, kupdate not needed for kernels >2.2.11 */
                 bdflush(1, 0);
                 sync();
@@ -587,11 +607,9 @@ static void halt_signal(int sig)
         /* allow time for last message to reach serial console */
         sleep(2);
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
-        if (sig == SIGUSR2)
+        if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
                 init_reboot(RB_POWER_OFF);
         else
-#endif
                 init_reboot(RB_HALT_SYSTEM);
         exit(0);
 }
diff --git a/insmod.c b/insmod.c
index 006468877..75058b959 100644
--- a/insmod.c
+++ b/insmod.c
@@ -71,7 +71,7 @@
 #ifndef MODUTILS_MODULE_H
 #define MODUTILS_MODULE_H 1
 
-#ident "$Id: insmod.c,v 1.11 2000/06/26 11:16:22 andersen Exp $"
+#ident "$Id: insmod.c,v 1.12 2000/07/08 18:55:24 andersen Exp $"
 
 /* This file contains the structures used by the 2.0 and 2.1 kernels.
    We do not use the kernel headers directly because we do not wish
@@ -277,7 +277,7 @@ int delete_module(const char *);
 #ifndef MODUTILS_OBJ_H
 #define MODUTILS_OBJ_H 1
 
-#ident "$Id: insmod.c,v 1.11 2000/06/26 11:16:22 andersen Exp $"
+#ident "$Id: insmod.c,v 1.12 2000/07/08 18:55:24 andersen Exp $"
 
 /* The relocatable object is manipulated using elfin types.  */
 
@@ -530,6 +530,9 @@ _syscall2(int, new_sys_init_module, const char *, name,
 _syscall5(int, old_sys_init_module, const char *, name, char *, code,
                   unsigned, codesize, struct old_mod_routines *, routines,
                   struct old_symbol_table *, symtab)
+#ifndef __NR_query_module
+#define __NR_query_module     167
+#endif
 _syscall5(int, query_module, const char *, name, int, which,
                 void *, buf, size_t, bufsize, size_t*, ret);
 #ifndef BB_RMMOD
diff --git a/loadkmap.c b/loadkmap.c
index 905741467..0e8c090d2 100644
--- a/loadkmap.c
+++ b/loadkmap.c
@@ -24,10 +24,20 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
-#include <linux/kd.h>
-#include <linux/keyboard.h>
 #include <sys/ioctl.h>
 
+/* From <linux/kd.h> */
+struct kbentry {
+        unsigned char kb_table;
+        unsigned char kb_index;
+        unsigned short kb_value;
+};
+#define KDSKBENT        0x4B47  /* sets one entry in translation table */
+
+/* From <linux/keyboard.h> */
+#define NR_KEYS         128
+#define MAX_NR_KEYMAPS  256
+
 
 static const char loadkmap_usage[] = "loadkmap\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
diff --git a/ls.c b/ls.c
index 75fa65421..98ccbeddb 100644
--- a/ls.c
+++ b/ls.c
@@ -49,11 +49,11 @@
 /************************************************************************/
 
 #include "internal.h"
-#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
-# include <linux/types.h>
-#else
+//#if !defined(__GLIBC__) && (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+//# include <linux/types.h>
+//#else
 # include <sys/types.h>
-#endif
+//#endif
 #include <sys/stat.h>
 #include <stdio.h>
 #include <unistd.h>
diff --git a/modutils/insmod.c b/modutils/insmod.c
index 006468877..75058b959 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -71,7 +71,7 @@
 #ifndef MODUTILS_MODULE_H
 #define MODUTILS_MODULE_H 1
 
-#ident "$Id: insmod.c,v 1.11 2000/06/26 11:16:22 andersen Exp $"
+#ident "$Id: insmod.c,v 1.12 2000/07/08 18:55:24 andersen Exp $"
 
 /* This file contains the structures used by the 2.0 and 2.1 kernels.
    We do not use the kernel headers directly because we do not wish
@@ -277,7 +277,7 @@ int delete_module(const char *);
 #ifndef MODUTILS_OBJ_H
 #define MODUTILS_OBJ_H 1
 
-#ident "$Id: insmod.c,v 1.11 2000/06/26 11:16:22 andersen Exp $"
+#ident "$Id: insmod.c,v 1.12 2000/07/08 18:55:24 andersen Exp $"
 
 /* The relocatable object is manipulated using elfin types.  */
 
@@ -530,6 +530,9 @@ _syscall2(int, new_sys_init_module, const char *, name,
 _syscall5(int, old_sys_init_module, const char *, name, char *, code,
                   unsigned, codesize, struct old_mod_routines *, routines,
                   struct old_symbol_table *, symtab)
+#ifndef __NR_query_module
+#define __NR_query_module     167
+#endif
 _syscall5(int, query_module, const char *, name, int, which,
                 void *, buf, size_t, bufsize, size_t*, ret);
 #ifndef BB_RMMOD
diff --git a/mount.c b/mount.c
index 76f048b1c..01e9b3d67 100644
--- a/mount.c
+++ b/mount.c
@@ -48,15 +48,17 @@
 #if defined BB_FEATURE_USE_DEVPS_PATCH
 #include <linux/devmtab.h>
 #endif
-#ifndef MS_RDONLY
-#include <linux/fs.h>
+
+/* 2.0.x. kernels don't know about MS_NODIRATIME */
+#ifndef MS_NODIRATIME
+#define MS_NODIRATIME   2048    /* Do not update directory access times */
 #endif
 
 
+
 #if defined BB_FEATURE_MOUNT_LOOP
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <linux/loop.h>
 
 
 static int use_loop = FALSE;
diff --git a/setkeycodes.c b/setkeycodes.c
index 9062caf75..1bdb909ea 100644
--- a/setkeycodes.c
+++ b/setkeycodes.c
@@ -27,7 +27,14 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <linux/kd.h>
+
+
+/* From <linux/kd.h> */
+struct kbkeycode {
+        unsigned int scancode, keycode;
+};
+#define KDSETKEYCODE    0x4B4D  /* write kernel keycode table entry */
+
 
 static const char setkeycodes_usage[] =
         "setkeycodes SCANCODE KEYCODE ...\n"
diff --git a/umount.c b/umount.c
index 61f7f9028..d790d68ff 100644
--- a/umount.c
+++ b/umount.c
@@ -26,20 +26,20 @@
 #include <stdio.h>
 #include <mntent.h>
 #include <errno.h>
+#include <sys/mount.h>
 #include <linux/unistd.h>
 
 
-//#include <sys/mount.h>
-/* Include our own version of sys/mount.h, since libc5 doesn't
- * know about umount2 */
-static _syscall1(int, umount, const char *, special_file);
-static _syscall2(int, umount2, const char *, special_file, int, flags);
-static _syscall5(int, mount, const char *, special_file, const char *, dir,
-                const char *, fstype, unsigned long int, rwflag, const void *, data);
+/* Include our own version of umount2 if we need it... */
+#ifndef __NR_umount2
+#define __NR_umount2           52
 #define MNT_FORCE               1
-#define MS_MGC_VAL              0xc0ed0000              /* Magic flag number to indicate "new" flags */
-#define MS_REMOUNT              32                              /* Alter flags of a mounted FS.  */
-#define MS_RDONLY               1                               /* Mount read-only.  */
+#define MS_MGC_VAL              0xc0ed0000 /* Magic number indicatng "new" flags */
+#define MS_REMOUNT              32      /* Alter flags of a mounted FS.  */
+#define MS_RDONLY               1       /* Mount read-only.  */
+
+#endif
+static _syscall2(int, umount2, const char *, special_file, int, flags);
 
 
 static const char umount_usage[] =
diff --git a/util-linux/dmesg.c b/util-linux/dmesg.c
index 20846f7c6..e88f549ca 100644
--- a/util-linux/dmesg.c
+++ b/util-linux/dmesg.c
@@ -16,7 +16,6 @@
  */
 
 #include "internal.h"
-#include <linux/unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -24,6 +23,7 @@
 
 #ifndef __alpha__
 # define __NR_klogctl __NR_syslog
+#include <linux/unistd.h>
 static inline _syscall3(int, klogctl, int, type, char *, b, int, len);
 #else                                                   /* __alpha__ */
 #define klogctl syslog
diff --git a/util-linux/fdflush.c b/util-linux/fdflush.c
index 81f0472c6..d9937355f 100644
--- a/util-linux/fdflush.c
+++ b/util-linux/fdflush.c
@@ -24,9 +24,10 @@
 #include "internal.h"
 #include <stdio.h>
 #include <sys/ioctl.h>
-#include <linux/fd.h>
 #include <fcntl.h>
 
+/* From <linux/fd.h> */
+#define FDFLUSH  _IO(2,0x4b)
 
 extern int fdflush_main(int argc, char **argv)
 {
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 76f048b1c..01e9b3d67 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -48,15 +48,17 @@
 #if defined BB_FEATURE_USE_DEVPS_PATCH
 #include <linux/devmtab.h>
 #endif
-#ifndef MS_RDONLY
-#include <linux/fs.h>
+
+/* 2.0.x. kernels don't know about MS_NODIRATIME */
+#ifndef MS_NODIRATIME
+#define MS_NODIRATIME   2048    /* Do not update directory access times */
 #endif
 
 
+
 #if defined BB_FEATURE_MOUNT_LOOP
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <linux/loop.h>
 
 
 static int use_loop = FALSE;
diff --git a/util-linux/umount.c b/util-linux/umount.c
index 61f7f9028..d790d68ff 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -26,20 +26,20 @@
 #include <stdio.h>
 #include <mntent.h>
 #include <errno.h>
+#include <sys/mount.h>
 #include <linux/unistd.h>
 
 
-//#include <sys/mount.h>
-/* Include our own version of sys/mount.h, since libc5 doesn't
- * know about umount2 */
-static _syscall1(int, umount, const char *, special_file);
-static _syscall2(int, umount2, const char *, special_file, int, flags);
-static _syscall5(int, mount, const char *, special_file, const char *, dir,
-                const char *, fstype, unsigned long int, rwflag, const void *, data);
+/* Include our own version of umount2 if we need it... */
+#ifndef __NR_umount2
+#define __NR_umount2           52
 #define MNT_FORCE               1
-#define MS_MGC_VAL              0xc0ed0000              /* Magic flag number to indicate "new" flags */
-#define MS_REMOUNT              32                              /* Alter flags of a mounted FS.  */
-#define MS_RDONLY               1                               /* Mount read-only.  */
+#define MS_MGC_VAL              0xc0ed0000 /* Magic number indicatng "new" flags */
+#define MS_REMOUNT              32      /* Alter flags of a mounted FS.  */
+#define MS_RDONLY               1       /* Mount read-only.  */
+
+#endif
+static _syscall2(int, umount2, const char *, special_file, int, flags);
 
 
 static const char umount_usage[] =
diff --git a/utility.c b/utility.c
index e1e0f71a5..271b101ec 100644
--- a/utility.c
+++ b/utility.c
@@ -45,14 +45,14 @@
 #include <dirent.h>
 #include <time.h>
 #include <utime.h>
-#include <sys/stat.h>
 #include <unistd.h>
 #include <ctype.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
 #include <sys/utsname.h>                /* for uname(2) */
 
 #if defined BB_FEATURE_MOUNT_LOOP
 #include <fcntl.h>
-#include <sys/ioctl.h>
 #include <linux/loop.h>
 #endif
 
@@ -904,9 +904,10 @@ unsigned long my_getpwnamegid(char *name)
 
 #if (defined BB_CHVT) || (defined BB_DEALLOCVT) || (defined BB_SETKEYCODES)
 
-
-#include <linux/kd.h>
-#include <sys/ioctl.h>
+/* From <linux/kd.h> */ 
+#define KDGKBTYPE       0x4B33  /* get keyboard type */
+#define         KB_84           0x01
+#define         KB_101          0x02    /* this is what we always answer */
 
 int is_a_console(int fd)
 {