[RELEASE] flxutils-0.1.20v0.1.20

4 files changed, 7 insertions, 1805 deletions

diff --git a/ChangeLog b/ChangeLog
index aeced60..883dc3d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -33,3 +33,7 @@
    .tgz, .lst, and .dep ; do_config & do_compile_only done in sub-shells ;
    automatic permissions on /etc/profile.d/*. Better handling of symlinks.
  - release 0.1.19
+
+2003/10/26
+ - fixes to pkg (0.3.17)
+ - release 0.1.20
diff --git a/init/README.2~ b/init/README.2~
deleted file mode 100644
index 03ce196..0000000
--- a/init/README.2~
+++ /dev/null
@@ -1,56 +0,0 @@
-Résumé rapide des commandes les plus courantes :
-
-  - { ... } : bloc d'instructions
-  - &<cmd> : n'exécute CMD que si le retour précédent est OK
-  - |<cmd> : n'exécute CMD que si le retour précédent est ERR
-  - !<cmd> : inverse le code de retour de CMD, et peut être
-    combiné à &,|
-
-  - te VAR=VAL => retourne TRUE si VAR=VAL dans l'env.
-  - in : spécifie l'init auquel on donne la main
-  - ec : echo
-  - rd : passe en mode prompt clavier, en affichant le
-         message. Ne retourne jamais d'erreur. Le prompt
-         compte les niveaux pour s'y retrouver avec les {} :-)
-  - mt : mount ; um : umount
-  - mv : mount --move ; bi : mount --bind
-  - ex : exécute dans un sous-process (system())
-  - /path/prog args : idem.
-  - rx xxx yyy : execute yyy dans chroot xxx;
-  - md : mkdir ; ln : lien
-  - bl,ch,fi : devices block, char, fifo
-  - pr xxx yyy : pivot_root : root -> xxx/yyy ; xxx->root
-
-
-C'est une conf opérationnelle de boot avec un linuxrc dans un initrd
-et un .preinit sur un CD.
-Par défaut, le kernel charge /sbin/init à partir de l'initrd. Ce dernier
-est un lien qui pointe vers le script /.linuxrc, référençant lui-même
-/linuxrc comme interpréteur. Le résultat est que l'on exécute :
-  /linuxrc < /sbin/init   ce qui revient à /linuxrc < /.linuxrc
-
-Il est possible de forcer le chemin de linuxrc par 'init=/xxxxx' au boot.
-
-Ensuite, le script linuxrc monte le CD puis exécute soit /sbin/init, soit
-le nom en regard de la ligne 'in xxxx' dans la conf, soit xxxx si
-'init2=xxxx' est précisé sur la ligne de commande, soit enfin le paramètre
-de 'in' fourni au clavier en mode prompt si "RDSHELL=1" est passé au noyau.
-
-Le /sbin/init du CD utilise par défaut /.preinit (qu'on aurait pu appeler
-en direct par 'init=' venant d'un kernel sans initrd, ou 'init2=' venant
-d'un initrd équipé du linuxrc décrit ci-dessus).
-
-Si le paramètre "RAMCOPY=1" est passé au kernel, alors le script recopie
-tout le CD en RAM, puis le démonte.
-
-Si le paramètre "AUTORUN=1" est passé au kernel, alors il tentera de monter
-une disquette en ext2 puis en fat, pour y exécuter /autorun dans un
-sous-processus.
-
-Si le paramètre "INITSHELL=1" est passé au kernel, alors l'utilisateur
-récupère un prompt.
-
-Enfin, le script transfère l'exécution à /sbin/init-sysv, ou au binaire
-désigné par 'in' dans le script, ou par celui désigné par le paramètre
-"INIT=xxx" passé au kernel.
-
diff --git a/init/init.c~ b/init/init.c~
deleted file mode 100644
index 3f6b45f..0000000
--- a/init/init.c~
+++ /dev/null
@@ -1,1746 +0,0 @@
-/*
-  WARNING ! THIS CODE IS OPTIMIZED FOR SIZE WITH COMPILED-IN ARGUMENTS. IT IS
-  SUBJECT TO BUFFER OVERFLOWS SO DON'T USE IT WITH RUNTIME ARGUMENTS !!!
-*/
-
-/* TODO : 
-     - make the config buffer bigger
-     - a few security checks (buffer overflows...)
-     - cleanup the code a bit
-*/
-
-/*
-  preinit - new try on 2002/04/20 - Willy Tarreau <willy AT meta-x.org>
-
-  usage : /sbin/preinit [ \< config_file ] [ { init args | "rebuild" } ]
-
-  Note : the "\< config_file" is to be used within configuration files :
-	  #!/sbin/preinit <
-	  ....
-  Thus, when you pass "init=/.preinit", the kernel executes :
-          /sbin/preinit < /.preinit
-
-  The '<' character has been chosen for its rareness.
-
-  the "rebuild" argument make the tool only rebuild a complete /dev
-  tree from the informations contained in the .preinit file, and then
-  exit. It does this even if the pid is not 1, but doesn't execute nor 
-  mount anything. Only mkdir, links, blocks, chars and fifo devices are
-  created. Very useful before a lilo :
-
-  # chroot /mnt/disk /.preinit rebuild
-  # lilo -r /mnt/disk
-  # umount /mnt/disk/dev
-
-  If /dev/console is found under /dev, it will not be rebuilt.
-
-  **** needs to rework the doc a bit since it's not up-to-date. ****
-
-  This code tries to build a few filesystem squeleton so that init has enough
-  to work correctly :
-    - mount -t proc /proc /proc
-    - mount -t tmpfs /dev /dev
-    - get information from a file : /.preinit which describes what to mount,
-      what ramdisks, links and dirs to make :
-
-ln      L source dest
-      	make a symlink from <source> to <dest>
-md      D path [ mode ]
-      	create a directory named <path> with the mode <mode>. If mode is left
-	undefined, 0755 is assumed.
-mt      M blkdev[(major:minor)] path fstype [ { ro | rw } [ flags ] ]
-      	if <major:minor> is specified, create a block device <blkdev>
-	with <major> and <minor> and mode 0600.
-	mount <blkdev> under <path> with type <fstype>, read-only, except if
-	rw is specified, and args <flags>.
-in      I path
-      	set the next init program to <path>
-ex      E cmd [ args ]*
-      	execute <cmd> with args <args> and wait for its completion.
-rx      R dir cmd [ args ]*
-      	chroot to <dir>, execute <cmd> with args <args> and wait for its completion.
-bl      B mode uid gid major minor naming_rule
-        create a set of block devices
-ch      C mode uid gid major minor naming_rule
-        create a set of char devices
-fi      F mode uid gid name
-	create a fifo
-ma      U mode
-	change umask
-pr      P <new_root> <put_old_relative>
-        pivot root : old root is displaced into new_root/put_old_relative, and
-	new_root is displaced under /.
-mv      K <old_dir> <new_dir>
-        keep directory <old_dir> after a pivot, then unmount it from old_dir.
-	usefull for /dev, /proc, /var ...
-um      O <old_dir>
-        umount <old_dir> after a pivot for example.
-lo      l </dev/loopX> <file>
-	losetup /dev/loopX file.
-      # anything
-      	comment.
-
-    The devices naming rules consist in strings mixed with numbering rules delimited with
-    brackets. Each numbering rule has 4 comma-separated fields :
-      - type of this string portion : 'c' for a single char, 'i' for an int, 'I' for an int
-        for which 0 is not printed, 'h' for an hex digit
-      - the range : 
-          - chars: any concatenation of character ranges separated with a dash '-': 'a-fk-npq'
-	  - ints : either an int or a range composed of 2 ints separated with a dash : '1-16'
-	  - hex  : same as int, but with hex digits (case insensitive)
-      - the scale : how much to add to the minor device for each step in the range.
-
-    The commands may be prefixed with a '|' or '&', in which case, they will be
-    executed only if the previous command failed (|) or succeeded (&).
-
-    Example :
-      ln hda3 /dev/disk  => symlinks /dev/disk to hda3
-      md /var/tmp 1777	=> creates a directory /var/tmp with mode 1777
-      mt /dev/hda1 /boot ext2 => attempts to mount /dev/hda1 read-only under /boot.
-      |mt /dev/hda1(3:1) /boot ext2 => only if the previous command failed, creates /dev/hda1 with major 3, minor 1 and mounts it under /boot
-      in /sbin/init-std  => the following init will be this /sbin/init-std (31 chars max)
-      ex /sbin/initramdisk /dev/ram6 1200 => executes /sbin/initramdisk with these args and waits for its completion
-      bl 0600 0 0 3 1 hd[c,ab,64][i,1-16,1] => makes all hdaX and hdbX with X ranging from 1 to 16
-      ch 0600 0 5 2 0 pty[c,p-za-f,16][h,0-f,1] => makes all 256 pty*
-      #comment => ignore this line
-
-  For executable reduction reasons, the .preinit file is limited to 4 kB.
-
-  The choice of the init program is quite complex, because we want to avoid
-  stupid loops and buggy behaviours while conservating quite a parametrable
-  init. Basically, we'll use environment variables that we will destroy once
-  read, to avoid getting them again if we loop on ourselves (imagine an
-  'exec /sbin/init" from a shell cmd line, which will blindly re-exec a shell).
-  So there are two distinct cases (init and linuxrc) :
-
-  1) linuxrc
-     We want to be able to either return or transfer execution to the real init.
-
-     - if we find "init2=xxxx" in the env, we memorize it and move it away from the env.
-     - if "in xxxx" has been specified on a keyboard input from an "rd"
-       statement, we unconditionnaly do an execve("xxx", "xxx", ##no args##, ##envp##).
-     - if the env contained "init2=xxxx", we do an execve("xxxx", "xxxx", ##no args##, ##envp##).
-       we don't pass the args because it is a rescue init, such as a shell, and
-       we don't want it to fail on "bash: auto: command not found" or similar.
-     - if the conf contained "in xxxx", we do an execve("xxxx", "xxxx", argv[], ##envp##)
-       because we want it to know about the original args. Eg: init=/linuxrc single
-     - if the conf didn't contain "in xxxx", we unmount all what we can and
-       return. The kernel will be able to switch over to the next init stage.
-
-  2) init, or anything else (telinit, ...)
-     We want to transfer execution to the real init.
-
-     - if we find "INIT=xxxx" in the env, we memorize it and move it away from the env.
-     - if "in xxxx" has been specified on a keyboard input from an "rd"
-       statement, we unconditionnaly do an execve("xxx", "xxx", ##no args##, ##envp##).
-     - if the env contained "INIT=xxxx", we do an execve("xxxx", "xxxx", ##no args##, ##envp##).
-       we don't pass the args because it is a rescue init, such as a shell, and
-       we don't want it to fail on "bash: auto: command not found" or similar.
-     - if the conf contained "in xxxx", we do an execve("xxxx", "xxxx", argv[], ##envp##)
-       because we want it to know about the original args. Eg: init=/.preinit single
-     - if the conf didn't contain "in xxxx", we transfer execution to "/sbin/init-sysv".
-
-  Note: basically, each time an environment variable is read, it must be killed afterwards.
-        Eg: init2=, INIT=, ...
-
-
-  The root directory should contain the following dirs :
-    - /var (directory) -> can be a ramfs or a real dir on another device
-    - /var/tmp (directory) -> idem
-    - /tmp (directory) -> idem
-    - /etc (directory or symlink) -> several possibilities :
-      - directory on the root fs (preferably)
-      - directory on another fs
-      - ramfs (or ramdisk) and directory extracted from other source
-      - symlink to /boot/etc  (in this case, /boot/etc must be a populated directory)
-      /etc will already have several symlinks
-
-  /boot (mandatory directory) contains the following :
-    - [kernel version] (directory) with vmlinuz, System.map, config and
-      the tree behind /lib/modules/[version]
-    - current (symlink to kernel version)
-    - vmlinuz (symlink to current/vmlinuz)
-    - System.map (symlink to current/System.map)
-    - config (symlink to current/config)
-    - eventually initrd (symlink to current/initrd)
-    - modules.dep (symlink to current/modules.dep)
-    - modules.pcimap (symlink to current/modules.pcimap)
-
-  /boot *may* contain the following :
-    - etc (populated directory)
-    - bootfstab (if /etc and /boot/etc empty or non-existant)
-             
-  This helps in making /lib/modules : it will simply be a symlink to
-  /boot/current which will contain all modules.
-
-
-wrong for now:
-  /tmp will always be linked to fs/var/tmp.
-  /var will always be linked to fs/var.
-  /fs must contain a description file for it (what to mount where, what to
-  initialize) so that init has a working filesystem hierarchy and fstab works.
-  /fs should be FAT-compatible, at least for its root structure.
-*/
-
-#include <stdio.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-#include <ctype.h>
-#include <sys/mount.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <linux/loop.h>
-
-#ifndef MNT_DETACH
-#define MNT_DETACH	2
-#endif
-
-#ifndef MS_MOVE
-#define MS_MOVE		8192
-#endif
-
-#define STR_SECT ".rodata"
-
-#ifdef DEBUG
-static void print(char *c) {
-    char *p = c;
-    while (*p)
-        p++;
-    write(0, c, p-c);
-}
-#else
-#define print(a,...)	do{}while(0)
-#endif
-
-//#define ATOL(x)		atol(x)
-#define ATOL(x)		my_atoul(x)
-
-typedef unsigned char uchar;
-
-
-/* this ordering is awful but it's the most efficient regarding space wasted in
- * long strings alignment with gcc-2.95.3 (gcc 3.2.3 doesn't try to align long
- * strings).
- */
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) msg_ent_console[] = "Entering command line mode : enter one command per line, end with '.'\n";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) root_dir[]  = "/";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) cur_dir[]  = ".";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_name[]  = "/dev";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) var_dir[]   = "/var";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) cfg_fname[] = "/.preinit";	   /* configuration file */
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) msg_err_console[] = "Command ignored, input alread bound to console !\n";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_console[] = "dev/console";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) str_rebuild[] = "rebuild";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) var_tmp[]   = "/var/tmp";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) var_run[]   = "/var/run";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) proc_self_fd[]   = "/proc/self/fd";
-//static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) proc_cmdline[] = "/proc/cmdline";
-//static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) sbin_init[] = "sbin/init";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) sbin_init_sysv[] = "sbin/init-sysv";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) cfg_linuxrc[] = "/.linuxrc";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_options[] = "size=0,nr_inodes=4096,mode=755";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) str__linuxrc[] = "/linuxrc";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) proc_dir[]  = "/proc";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) tmpfs_fs[]  = "tmpfs";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_root[]  = "dev/root";
-
-
-#define tmp_name	(var_tmp + 4)		// static const char tmp_name[]  = "/tmp";
-#define proc_fs		(proc_dir+1)		// static const char proc_fs[]  = "proc";
-#define fd_dir		(proc_self_fd + 11)	// static const char fd_dir[]  = "fd";
-#define str_linuxrc	(str__linuxrc+1)	// "linuxrc"
-
-
-#define CONST_STR(x)  ({ static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) ___str___[]=x; (char *)___str___; })
-
-/* used by naming rules */
-#define MAX_FIELDS	8
-#define MAX_DEVNAME_LEN	64
-#define MAX_CFG_SIZE	4096
-#define	MAX_CFG_ARGS	16
-//#define MAX_CMDLINE_LEN 512
-#define MAX_BRACE_LEVEL	10
-
-struct dev_varstr {
-    char type;
-    union {
-	struct {
-	    char *set;
-	    char *ptr;
-	    char value; /* value to be printed */
-	    uchar index; /* index in the set */
-	} chr;
-	struct {
-	    uchar low;
-	    uchar high;
-	    uchar value;
-	} num;
-    } u;
-    uchar scale;
-};
-
-enum {
-    TOK_LN = 0,	/* ln : make a symlink */
-    TOK_MD,	/* md : mkdir */
-    TOK_MT,	/* mt : mount */
-    TOK_IN,	/* in : set init program */
-    TOK_EX,	/* ex : execute */
-    TOK_RX,	/* rx : execute under chroot */
-    TOK_BL,	/* bl : make block devices */
-    TOK_CH,	/* ch : make char devices */
-    TOK_FI,	/* fi : make a fifo */
-    TOK_MA,	/* ma : set umask */
-    TOK_PR,	/* pr : pivot root */
-    TOK_MV,	/* mv : move a filesystem */
-    TOK_BI,	/* bi : bind a directory */
-    TOK_UM,	/* um : umount a filesystem */
-    TOK_LO,	/* lo : losetup */
-    TOK_EC,	/* ec : echo */
-    TOK_TE,	/* te : test an environment variable */
-    TOK_RD,	/* rd : read a command from the console */
-    TOK_OB,	/* {  : begin a command block */
-    TOK_CB,	/* }  : end a command block */
-    TOK_DOT,	/* .  : end of config */
-    TOK_UNK,	/* unknown command */
-    TOK_EOF,	/* end of file */
-    TOK_COND_NEG = 0x20, /* negate the result before evaluation */
-    TOK_COND_OR  = 0x40, /* conditionnal OR */
-    TOK_COND_AND = 0x80, /* conditionnal AND */
-    TOK_COND     = 0xE0, /* any condition */
-};
-
-/* counts from TOK_LN to TOK_DOT */
-#define NB_TOKENS	21
-
-/* this contains all two-chars command, 1-char commands, followed by a token
- * number.
- */
-static const  __attribute__ ((__section__(STR_SECT),__aligned__(1))) struct {
-    char lcmd[2]; /* long form */
-    char scmd;	  /* short form */
-    char minargs; /* min #args */
-} tokens[NB_TOKENS] = {
-    "ln", 'L', 2,	/* TOK_LN */
-    "md", 'D', 1,	/* TOK_MD */
-    "mt", 'M', 3,	/* TOK_MT */
-    "in", 'I', 1,	/* TOK_IN */
-    "ex", 'E', 1,	/* TOK_EX */
-    "rx", 'R', 2,	/* TOK_RX */
-    "bl", 'B', 6,	/* TOK_BL */
-    "ch", 'C', 6,	/* TOK_CH */
-    "fi", 'F', 4,	/* TOK_FI */
-    "ma", 'U', 1,	/* TOK_MA */
-    "pr", 'P', 2,	/* TOK_PR */
-    "mv", 'K', 2,	/* TOK_MV */
-    "bi", 'K', 2,	/* TOK_BI */
-    "um", 'O', 1,	/* TOK_UM */
-    "lo", 'l', 2,	/* TOK_LO */
-    "ec",   0, 0,	/* TOK_EC */
-    "te",   0, 1,	/* TOK_TE */
-    "rd",   0, 0,	/* TOK_RD */
-    "{",  '{', 0,	/* TOK_OB */
-    "}",  '}', 0,	/* TOK_CB */
-    ".",  '.', 0,	/* TOK_DOT : put every command before this one */
-};
-
-#define UID_ROOT	0
-#define GID_ROOT	0
-#define GID_TTY		5
-#define GID_KMEM	9
-
-static const __attribute__ ((__section__(STR_SECT),__aligned__(1))) struct {
-    char   name[8];
-    short  gid;
-    char   major, minor;
-    mode_t mode;	/* mode + S_IFCHR, S_IFBLK, S_IFIFO */
-} dev_nodes[] =  {
-    /* console must always be at the first location */
-    { "console", GID_TTY,  5, 1, 0600 | S_IFCHR },
-    { "mem",     GID_KMEM, 1, 1, 0640 | S_IFCHR },
-    { "kmem",    GID_KMEM, 1, 2, 0640 | S_IFCHR },
-    { "null",    GID_ROOT, 1, 3, 0666 | S_IFCHR },
-    { "port",    GID_KMEM, 1, 4, 0640 | S_IFCHR },
-    { "zero",    GID_ROOT, 1, 5, 0666 | S_IFCHR },
-    { "full",    GID_ROOT, 1, 7, 0666 | S_IFCHR },
-    { "random",  GID_ROOT, 1, 8, 0644 | S_IFCHR },
-    { "urandom", GID_ROOT, 1, 9, 0644 | S_IFCHR },
-    { "tty0",    GID_TTY,  4, 0, 0600 | S_IFCHR },
-    { "tty",     GID_TTY,  5, 0, 0666 | S_IFCHR },
-    { "ptmx",    GID_TTY,  5, 2, 0666 | S_IFCHR },
-    { "initctl", GID_ROOT, 0, 0, 0600 | S_IFIFO },
-} ;
-
-static char cfg_data[MAX_CFG_SIZE];
-static char *cfg_args[MAX_CFG_ARGS];
-static char *cfg_line;
-//static char cmdline[MAX_CMDLINE_LEN];
-static char *cst_str[MAX_FIELDS];
-static char *var_str[MAX_FIELDS];
-static struct dev_varstr var[MAX_FIELDS];
-static int error; /* an error has emerged from last operation */
-static int linuxrc; /* non-zero if we were called as 'linuxrc' */
-
-/* the two input modes */
-#define INPUT_FILE 0
-#define INPUT_KBD  1
-
-static unsigned long my_atoul(const char *s) {
-    unsigned long res = 0;
-    unsigned long digit;
-
-    while (*s) {
-	      digit = *s - '0';
-	      if (digit > 9)
-		  return 0;
-	      res = res * 10 + digit;
-	      s++;
-    }
-    return res;
-}
-
-static int streq(const char *str1, const char *str2) {
-    char c1;
-    while ((c1 = *str1) && c1 == *str2) { /* the second test ensures that *str2 != 0 */
-	str1++;
-	str2++;
-    }
-    return ((c1 | *str2) == 0);
-}
-
-/*
- * copies at most <size-1> chars from <src> to <dst>. Last char is always
- * set to 0, unless <size> is 0. The number of chars copied is returned
- * (excluding the terminating zero).
- * This code has been optimized for size and speed : on x86, it's 45 bytes
- * long, uses only registers, and consumes only 4 cycles per char.
- */
-static inline int my_strlcpy(char *dst, const char *src, int size) {
-    char *orig = dst;
-    if (size) {
-	while (--size && (*dst = *src)) {
-	    src++; dst++;
-	}
-	*dst = 0;
-    }
-    return dst - orig;
-}
-
-static void reopen_console() {
-	int i, fd, oldfd;
-
-	oldfd = dup2(0, 3);	// keep a valid console on fd 3
-
-	for (i = 0; i < 3; i++)
-		close(i);
-
-	fd = open(dev_console, O_RDWR); // fd = 0 (stdin) or -1 (error)
-	if (fd < 0)
-		dup(oldfd); // restore 0 from old console
-
-	close(oldfd);
-	dup(0); // stdout
-	dup(0); // stderr
-
-	print("init/info : reopened /dev/console\n");
-}
-
-#if 0
-/* reads the kernel command line </proc/cmdline> into memory and searches
- * for the first assignment of the required variable. Return its value
- * (which may be empty) or NULL if not found.
- */
-char *find_arg(char *arg) {
-    char *a, *c;
-
-    /* read cmdline the first time */
-    if (!*cmdline) {
-	int fd, len;
-
-	if ((fd = open(proc_cmdline, O_RDONLY)) == -1)
-	    return NULL;
-	if ((len = read(fd, cmdline, sizeof(cmdline)-1)) == -1) {
-	    close(fd);
-	    return NULL;
-	}
-	cmdline[len] = 0;
-	close(fd);
-    }
-    
-    /* search for the required arg in cmdline */
-    c = cmdline;
-    a = arg;
-
-    while (*c) {
-	if (*a == 0) {
-	    /* complete match. is it a full word ? */
-	    if (*c == '=') {
-		a = ++c;
-		while ((*a != ' ') && (*a != '\0') && (*a != '\n'))
-		    a++;
-		*a = 0;
-		return c; /* return value */
-	    }
-	    else if (*c == ' ' || *c == '\n' || *c == '\0') {
-		*c = 0;
-		return c; /* return pointer to empty string */
-	    }
-	    else { /* not full word. bad match. */
-		c -= (a - arg) - 1;
-		a = arg;
-	    }
-	}
-	if (*c == *a) {
-	    a++;
-	    c++;
-	}
-	else