add insmod from busybox (i386 only)

1 files changed, 1744 insertions, 0 deletions

diff --git a/mdk-stage1/insmod-busybox/utility.c b/mdk-stage1/insmod-busybox/utility.c
new file mode 100644
index 000000000..35c169538
--- /dev/null
+++ b/mdk-stage1/insmod-busybox/utility.c
@@ -0,0 +1,1744 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell 
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+
+#include "busybox.h"
+#if defined (BB_CHMOD_CHOWN_CHGRP) \
+ || defined (BB_CP_MV)		   \
+ || defined (BB_FIND)		   \
+ || defined (BB_INSMOD)		   \
+ || defined (BB_LS)		   \
+ || defined (BB_RM)		   \
+ || defined (BB_TAR)
+/* same conditions as recursiveAction */
+#define bb_need_name_too_long
+#endif
+#define bb_need_memory_exhausted
+#define bb_need_full_version
+#define BB_DECLARE_EXTERN
+#include "messages.c"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <time.h>
+#include <utime.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <sys/ioctl.h>
+#include <sys/utsname.h>		/* for uname(2) */
+
+/* Busybox mount uses either /proc/filesystems or /dev/mtab to get the 
+ * list of available filesystems used for the -t auto option */ 
+#if defined BB_FEATURE_USE_PROCFS && defined BB_FEATURE_USE_DEVPS_PATCH
+//#error Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again.
+#error "Sorry, but busybox can't use both /proc and /dev/ps at the same time -- Pick one and try again."
+#endif
+
+
+#if defined BB_MOUNT || defined BB_UMOUNT || defined BB_DF
+#  if defined BB_MTAB
+const char mtab_file[] = "/etc/mtab";
+#  else
+#    if defined BB_FEATURE_USE_PROCFS
+const char mtab_file[] = "/proc/mounts";
+#    else
+#      if defined BB_FEATURE_USE_DEVPS_PATCH
+const char mtab_file[] = "/dev/mtab";
+#    else
+#        error With (BB_MOUNT||BB_UMOUNT||BB_DF) defined, you must define either BB_MTAB or ( BB_FEATURE_USE_PROCFS | BB_FEATURE_USE_DEVPS_PATCH)
+#    endif
+#  endif
+#  endif
+#endif
+
+#ifdef _STANDALONE_
+extern void errorMsg(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	fflush(stdout);
+	fprintf(stderr, "busybox: ");
+	vfprintf(stderr, s, p);
+	va_end(p);
+	fflush(stderr);
+}
+
+extern void fatalError(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	fflush(stdout);
+	fprintf(stderr, "busybox: ");
+	vfprintf(stderr, s, p);
+	va_end(p);
+	fflush(stderr);
+	exit(FALSE);
+}
+#else /* _STANDALONE_ */
+#include "../log.h"
+extern void errorMsg(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	vlog_message_nobs(s, p);
+	va_end(p);
+}
+
+extern void fatalError(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	vlog_message_nobs(s, p);
+	va_end(p);
+	while (1);
+}
+#endif /* _STANDALONE_ */
+
+
+#if defined BB_INIT
+/* Returns kernel version encoded as major*65536 + minor*256 + patch,
+ * so, for example,  to check if the kernel is greater than 2.2.11:
+ *     if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
+ */
+extern int get_kernel_revision(void)
+{
+	struct utsname name;
+	int major = 0, minor = 0, patch = 0;
+
+	if (uname(&name) == -1) {
+		perror("cannot get system information");
+		return (0);
+	}
+	sscanf(name.version, "%d.%d.%d", &major, &minor, &patch);
+	return major * 65536 + minor * 256 + patch;
+}
+#endif                                                 /* BB_INIT */
+
+
+
+#if defined BB_FREE || defined BB_INIT || defined BB_UNAME || defined BB_UPTIME
+_syscall1(int, sysinfo, struct sysinfo *, info);
+#endif                                                 /* BB_INIT */
+
+#if defined BB_MOUNT || defined BB_UMOUNT
+
+#ifndef __NR_umount2
+#define __NR_umount2           52
+#endif
+
+/* Include our own version of <sys/mount.h>, since libc5 doesn't
+ * know about umount2 */
+extern _syscall1(int, umount, const char *, special_file);
+extern _syscall2(int, umount2, const char *, special_file, int, flags);
+extern _syscall5(int, mount, const char *, special_file, const char *, dir,
+		const char *, fstype, unsigned long int, rwflag, const void *, data);
+#endif
+
+#if defined BB_INSMOD || defined BB_LSMOD
+#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);
+#endif
+
+
+#if defined (BB_CP_MV) || defined (BB_DU)
+
+#define HASH_SIZE	311		/* Should be prime */
+#define hash_inode(i)	((i) % HASH_SIZE)
+
+static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
+
+/*
+ * Return 1 if statbuf->st_ino && statbuf->st_dev are recorded in
+ * `ino_dev_hashtable', else return 0
+ *
+ * If NAME is a non-NULL pointer to a character pointer, and there is
+ * a match, then set *NAME to the value of the name slot in that
+ * bucket.
+ */
+int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
+{
+	ino_dev_hashtable_bucket_t *bucket;
+
+	bucket = ino_dev_hashtable[hash_inode(statbuf->st_ino)];
+	while (bucket != NULL) {
+	  if ((bucket->ino == statbuf->st_ino) &&
+		  (bucket->dev == statbuf->st_dev))
+	  {
+		if (name) *name = bucket->name;
+		return 1;
+	  }
+	  bucket = bucket->next;
+	}
+	return 0;
+}
+
+/* Add statbuf to statbuf hash table */
+void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
+{
+	int i;
+	size_t s;
+	ino_dev_hashtable_bucket_t *bucket;
+    
+	i = hash_inode(statbuf->st_ino);
+	s = name ? strlen(name) : 0;
+	bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + s);
+	bucket->ino = statbuf->st_ino;
+	bucket->dev = statbuf->st_dev;
+	if (name)
+		strcpy(bucket->name, name);
+	else
+		bucket->name[0] = '\0';
+	bucket->next = ino_dev_hashtable[i];
+	ino_dev_hashtable[i] = bucket;
+}
+
+/* Clear statbuf hash table */
+void reset_ino_dev_hashtable(void)
+{
+	int i;
+	ino_dev_hashtable_bucket_t *bucket;
+
+	for (i = 0; i < HASH_SIZE; i++) {
+		while (ino_dev_hashtable[i] != NULL) {
+			bucket = ino_dev_hashtable[i]->next;
+			free(ino_dev_hashtable[i]);
+			ino_dev_hashtable[i] = bucket;
+		}
+	}
+}
+
+#endif /* BB_CP_MV || BB_DU */
+
+#if defined (BB_CP_MV) || defined (BB_DU) || defined (BB_LN) || defined (BB_AR)
+/*
+ * Return TRUE if a fileName is a directory.
+ * Nonexistant files return FALSE.
+ */
+int isDirectory(const char *fileName, const int followLinks, struct stat *statBuf)
+{
+	int status;
+	int didMalloc = 0;
+
+	if (statBuf == NULL) {
+	    statBuf = (struct stat *)xmalloc(sizeof(struct stat));
+	    ++didMalloc;
+	}
+
+	if (followLinks == TRUE)
+		status = stat(fileName, statBuf);
+	else
+		status = lstat(fileName, statBuf);
+
+	if (status < 0 || !(S_ISDIR(statBuf->st_mode))) {
+	    status = FALSE;
+	}
+	else status = TRUE;
+
+	if (didMalloc) {
+	    free(statBuf);
+	    statBuf = NULL;
+	}
+	return status;
+}
+#endif
+
+#if defined (BB_AR) || defined BB_CP_MV
+/*
+ * Copy readSize bytes between two file descriptors
+ */
+int copySubFile(int srcFd, int dstFd, size_t remaining)
+{
+        size_t size;
+        char buffer[BUFSIZ];
+
+        while (remaining > 0) {
+                if (remaining > BUFSIZ)
+                        size = BUFSIZ;
+                else
+                        size = remaining;
+                if (fullWrite(dstFd, buffer, fullRead(srcFd, buffer, size)) < size)
+                        return(FALSE);
+                remaining -= size;
+        }
+        return (TRUE);
+}
+#endif
+
+
+#if defined (BB_CP_MV)
+/*
+ * Copy one file to another, while possibly preserving its modes, times, and
+ * modes.  Returns TRUE if successful, or FALSE on a failure with an error
+ * message output.  (Failure is not indicated if attributes cannot be set.)
+ * -Erik Andersen
+ */
+int
+copyFile(const char *srcName, const char *destName,
+		 int setModes, int followLinks, int forceFlag)
+{
+	int rfd;
+	int wfd;
+	int status;
+	struct stat srcStatBuf;
+	struct stat dstStatBuf;
+	struct utimbuf times;
+
+	if (followLinks == TRUE)
+		status = stat(srcName, &srcStatBuf);
+	else
+		status = lstat(srcName, &srcStatBuf);
+
+	if (status < 0) {
+		perror(srcName);
+		return FALSE;
+	}
+
+	if (followLinks == TRUE)
+		status = stat(destName, &dstStatBuf);
+	else
+		status = lstat(destName, &dstStatBuf);
+
+	if (status < 0 || forceFlag==TRUE) {
+		unlink(destName);
+		dstStatBuf.st_ino = -1;
+		dstStatBuf.st_dev = -1;
+	}
+
+	if ((srcStatBuf.st_dev == dstStatBuf.st_dev) &&
+		(srcStatBuf.st_ino == dstStatBuf.st_ino)) {
+		errorMsg("Copying file \"%s\" to itself\n", srcName);
+		return FALSE;
+	}
+
+	if (S_ISDIR(srcStatBuf.st_mode)) {
+		//fprintf(stderr, "copying directory %s to %s\n", srcName, destName);
+		/* Make sure the directory is writable */
+		status = mkdir(destName, 0777777 ^ umask(0));
+		if (status < 0 && errno != EEXIST) {
+			perror(destName);
+			return FALSE;
+		}
+	} else if (S_ISLNK(srcStatBuf.st_mode)) {
+		char link_val[BUFSIZ + 1];
+		int link_size;
+
+		//fprintf(stderr, "copying link %s to %s\n", srcName, destName);
+		/* Warning: This could possibly truncate silently, to BUFSIZ chars */
+		link_size = readlink(srcName, &link_val[0], BUFSIZ);
+		if (link_size < 0) {
+			perror(srcName);
+			return FALSE;
+		}
+		link_val[link_size] = '\0';
+		status = symlink(link_val, destName);
+		if (status < 0) {
+			perror(destName);
+			return FALSE;
+		}
+#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+		if (setModes == TRUE) {
+			/* Try to set owner, but fail silently like GNU cp */
+			lchown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid);
+		}
+#endif
+		return TRUE;
+	} else if (S_ISFIFO(srcStatBuf.st_mode)) {
+		//fprintf(stderr, "copying fifo %s to %s\n", srcName, destName);
+		if (mkfifo(destName, 0644) < 0) {
+			perror(destName);
+			return FALSE;
+		}
+	} else if (S_ISBLK(srcStatBuf.st_mode) || S_ISCHR(srcStatBuf.st_mode)
+			   || S_ISSOCK(srcStatBuf.st_mode)) {
+		//fprintf(stderr, "copying soc, blk, or chr %s to %s\n", srcName, destName);
+		if (mknod(destName, srcStatBuf.st_mode, srcStatBuf.st_rdev) < 0) {
+			perror(destName);
+			return FALSE;
+		}
+	} else if (S_ISREG(srcStatBuf.st_mode)) {
+		//fprintf(stderr, "copying regular file %s to %s\n", srcName, destName);
+		rfd = open(srcName, O_RDONLY);
+		if (rfd < 0) {
+			perror(srcName);
+			return FALSE;
+		}
+
+	 	wfd = open(destName, O_WRONLY | O_CREAT | O_TRUNC,
+				 srcStatBuf.st_mode);
+		if (wfd < 0) {
+			perror(destName);
+			close(rfd);
+			return FALSE;
+		}
+
+		if (copySubFile(rfd, wfd, srcStatBuf.st_size)==FALSE)
+			goto error_exit;	
+		
+		close(rfd);
+		if (close(wfd) < 0) {
+			return FALSE;
+		}
+	}
+
+	if (setModes == TRUE) {
+		/* This is fine, since symlinks never get here */
+		if (chown(destName, srcStatBuf.st_uid, srcStatBuf.st_gid) < 0) {
+			perror(destName);
+			exit FALSE;
+		}
+		if (chmod(destName, srcStatBuf.st_mode) < 0) {
+			perror(destName);
+			exit FALSE;
+		}
+		times.actime = srcStatBuf.st_atime;
+		times.modtime = srcStatBuf.st_mtime;
+		if (utime(destName, &times) < 0) {
+			perror(destName);
+			exit FALSE;
+		}
+	}
+
+	return TRUE;
+
+  error_exit:
+	perror(destName);
+	close(rfd);
+	close(wfd);
+
+	return FALSE;
+}
+#endif							/* BB_CP_MV */
+
+
+
+#if defined BB_TAR || defined BB_LS ||defined BB_AR
+
+#define TYPEINDEX(mode) (((mode) >> 12) & 0x0f)
+#define TYPECHAR(mode)  ("0pcCd?bB-?l?s???" [TYPEINDEX(mode)])
+
+/* The special bits. If set, display SMODE0/1 instead of MODE0/1 */
+static const mode_t SBIT[] = {
+	0, 0, S_ISUID,
+	0, 0, S_ISGID,
+	0, 0, S_ISVTX
+};
+
+/* The 9 mode bits to test */
+static const mode_t MBIT[] = {
+	S_IRUSR, S_IWUSR, S_IXUSR,
+	S_IRGRP, S_IWGRP, S_IXGRP,
+	S_IROTH, S_IWOTH, S_IXOTH
+};
+
+#define MODE1  "rwxrwxrwx"
+#define MODE0  "---------"
+#define SMODE1 "..s..s..t"
+#define SMODE0 "..S..S..T"
+
+/*
+ * Return the standard ls-like mode string from a file mode.
+ * This is static and so is overwritten on each call.
+ */
+const char *modeString(int mode)
+{
+	static char buf[12];
+
+	int i;
+
+	buf[0] = TYPECHAR(mode);
+	for (i = 0; i < 9; i++) {
+		if (mode & SBIT[i])
+			buf[i + 1] = (mode & MBIT[i]) ? SMODE1[i] : SMODE0[i];
+		else
+			buf[i + 1] = (mode & MBIT[i]) ? MODE1[i] : MODE0[i];
+	}
+	return buf;
+}
+#endif							/* BB_TAR || BB_LS */
+
+
+#if defined BB_TAR || defined BB_AR
+/*
+ * Return the standard ls-like time string from a time_t
+ * This is static and so is overwritten on each call.
+ */
+const char *timeString(time_t timeVal)
+{
+	time_t now;
+	char *str;
+	static char buf[26];
+
+	time(&now);
+
+	str = ctime(&timeVal);
+
+	strcpy(buf, &str[4]);
+	buf[12] = '\0';
+
+	if ((timeVal > now) || (timeVal < now - 365 * 24 * 60 * 60L)) {
+		strcpy(&buf[7], &str[20]);
+		buf[11] = '\0';
+	}
+
+	return buf;
+}
+#endif /* BB_TAR || BB_AR */
+
+#if defined BB_TAR || defined BB_CP_MV || defined BB_AR
+/*
+ * Write all of the supplied buffer out to a file.
+ * This does multiple writes as necessary.
+ * Returns the amount written, or -1 on an error.
+ */
+int fullWrite(int fd, const char *buf, int len)
+{
+	int cc;
+	int total;
+
+	total = 0;
+
+	while (len > 0) {
+		cc = write(fd, buf, len);
+
+		if (cc < 0)
+			return -1;
+
+		buf += cc;
+		total += cc;
+		len -= cc;
+	}
+
+	return total;
+}
+#endif /* BB_TAR || BB_CP_MV || BB_AR */
+
+
+#if defined BB_TAR || defined BB_TAIL || defined BB_AR || defined BB_SH || defined BB_CP_MV
+/*
+ * Read all of the supplied buffer from a file.
+ * This does multiple reads as necessary.
+ * Returns the amount read, or -1 on an error.
+ * A short read is returned on an end of file.
+ */
+int fullRead(int fd, char *buf, int len)
+{
+	int cc;
+	int total;
+
+	total = 0;
+
+	while (len > 0) {
+		cc = read(fd, buf, len);
+
+		if (cc < 0)
+			return -1;
+
+		if (cc == 0)
+			break;
+
+		buf += cc;
+		total += cc;
+		len -= cc;
+	}
+
+	return total;
+}
+#endif /* BB_TAR || BB_TAIL || BB_AR || BB_SH */
+
+
+#if defined (BB_CHMOD_CHOWN_CHGRP) \
+ || defined (BB_CP_MV)			\
+ || defined (BB_FIND)			\
+ || defined (BB_INSMOD)			\
+ || defined (BB_LS)				\
+ || defined (BB_RM)				\
+ || defined (BB_TAR)
+
+/*
+ * Walk down all the directories under the specified 
+ * location, and do something (something specified
+ * by the fileAction and dirAction function pointers).
+ *
+ * Unfortunatly, while nftw(3) could replace this and reduce 
+ * code size a bit, nftw() wasn't supported before GNU libc 2.1, 
+ * and so isn't sufficiently portable to take over since glibc2.1
+ * is so stinking huge.
+ */
+int recursiveAction(const char *fileName,
+					int recurse, int followLinks, int depthFirst,
+					int (*fileAction) (const char *fileName,
+									   struct stat * statbuf,
+									   void* userData),
+					int (*dirAction) (const char *fileName,
+									  struct stat * statbuf,
+									  void* userData),
+					void* userData)
+{
+	int status;
+	struct stat statbuf;
+	struct dirent *next;
+
+	if (followLinks == TRUE)
+		status = stat(fileName, &statbuf);
+	else
+		status = lstat(fileName, &statbuf);
+
+	if (status < 0) {
+#ifdef BB_DEBUG_PRINT_SCAFFOLD
+		fprintf(stderr,
+				"status=%d followLinks=%d TRUE=%d\n",
+				status, followLinks, TRUE);
+#endif
+		perror(fileName);
+		return FALSE;
+	}
+
+	if ((followLinks == FALSE) && (S_ISLNK(statbuf.st_mode))) {
+		if (fileAction == NULL)
+			return TRUE;
+		else
+			return fileAction(fileName, &statbuf, userData);
+	}
+
+	if (recurse == FALSE) {
+		if (S_ISDIR(statbuf.st_mode)) {
+			if (dirAction != NULL)
+				return (dirAction(fileName, &statbuf, userData));
+			else
+				return TRUE;
+		}
+	}
+
+	if (S_ISDIR(statbuf.st_mode)) {
+		DIR *dir;
+
+		dir = opendir(fileName);
+		if (!dir) {
+			perror(fileName);
+			return FALSE;
+		}
+		if (dirAction != NULL && depthFirst == FALSE) {
+			status = dirAction(fileName, &statbuf, userData);
+			if (status == FALSE) {
+				perror(fileName);
+				return FALSE;
+			}
+		}
+		while ((next = readdir(dir)) != NULL) {
+			char nextFile[BUFSIZ + 1];
+
+			if ((strcmp(next->d_name, "..") == 0)
+				|| (strcmp(next->d_name, ".") == 0)) {
+				continue;
+			}
+			if (strlen(fileName) + strlen(next->d_name) + 1 > BUFSIZ) {
+				errorMsg("name_too_long");
+				return FALSE;
+			}
+			memset(nextFile, 0, sizeof(nextFile));
+			sprintf(nextFile, "%s/%s", fileName, next->d_name);
+			status =
+				recursiveAction(nextFile, TRUE, followLinks, depthFirst,
+								fileAction, dirAction, userData);
+			if (status == FALSE) {
+				closedir(dir);
+				return FALSE;
+			}
+		}
+		status = closedir(dir);
+		if (status < 0) {
+			perror(fileName);
+			return FALSE;
+		}
+		if (dirAction != NULL && depthFirst == TRUE) {
+			status = dirAction(fileName, &statbuf, userData);
+			if (status == FALSE) {
+				perror(fileName);
+				return FALSE;
+			}
+		}
+	} else {
+		if (fileAction == NULL)
+			return TRUE;
+		else
+			return fileAction(fileName, &statbuf, userData);
+	}
+	return TRUE;
+}
+
+#endif							/* BB_CHMOD_CHOWN_CHGRP || BB_CP_MV || BB_FIND || BB_LS || BB_INSMOD */
+
+
+
+#if defined (BB_TAR) || defined (BB_MKDIR) || defined (BB_AR)
+/*
+ * Attempt to create the directories along the specified path, except for
+ * the final component.  The mode is given for the final directory only,
+ * while all previous ones get default protections.  Errors are not reported
+ * here, as failures to restore files can be reported later.
+ */
+extern int createPath(const char *name, int mode)
+{
+	char *cp;
+	char *cpOld;
+	char buf[BUFSIZ + 1];
+	int retVal = 0;
+
+	strcpy(buf, name);
+	for (cp = buf; *cp == '/'; cp++);
+	cp = strchr(cp, '/');
+	while (cp) {
+		cpOld = cp;
+		cp = strchr(cp + 1, '/');
+		*cpOld = '\0';
+		retVal = mkdir(buf, cp ? 0777 : mode);
+		if (retVal != 0 && errno != EEXIST) {
+			perror(buf);
+			return FALSE;
+		}
+		*cpOld = '/';
+	}
+	return TRUE;
+}
+#endif							/* BB_TAR || BB_MKDIR */
+
+
+
+#if defined (BB_CHMOD_CHOWN_CHGRP) || defined (BB_MKDIR) \
+ || defined (BB_MKFIFO) || defined (BB_MKNOD) || defined (BB_AR)
+/* [ugoa]{+|-|=}[rwxst] */
+
+
+
+extern int parse_mode(const char *s, mode_t * theMode)
+{
+	mode_t andMode =
+
+		S_ISVTX | S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
+	mode_t orMode = 0;
+	mode_t mode = 0;
+	mode_t groups = 0;
+	char type;
+	char c;
+
+	if (s==NULL)
+		return (FALSE);
+
+	do {
+		for (;;) {
+			switch (c = *s++) {
+			case '\0':
+				return -1;
+			case 'u':
+				groups |= S_ISUID | S_IRWXU;
+				continue;
+			case 'g':
+				groups |= S_ISGID | S_IRWXG;
+				continue;
+			case 'o':
+				groups |= S_IRWXO;
+				continue;
+			case 'a':
+				groups |= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
+				continue;
+			case '+':
+			case '=':
+			case '-':
+				type = c;
+				if (groups == 0)	/* The default is "all" */
+					groups |=
+						S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
+				break;
+			default:
+				if (isdigit(c) && c >= '0' && c <= '7' &&
+					mode == 0 && groups == 0) {
+					*theMode = strtol(--s, NULL, 8);
+					return (TRUE);
+				} else
+					return (FALSE);
+			}
+			break;
+		}
+
+		while ((c = *s++) != '\0') {
+			switch (c) {
+			case ',':
+				break;
+			case 'r':
+				mode |= S_IRUSR | S_IRGRP | S_IROTH;
+				continue;
+			case 'w':
+				mode |= S_IWUSR | S_IWGRP | S_IWOTH;
+				continue;
+			case 'x':
+				mode |= S_IXUSR | S_IXGRP | S_IXOTH;
+				continue;
+			case 's':
+				mode |= S_IXGRP | S_ISUID | S_ISGID;
+				continue;
+			case 't':
+				mode |= 0;
+				continue;
+			default:
+				*theMode &= andMode;
+				*theMode |= orMode;
+				return (TRUE);
+			}
+			break;
+		}
+		switch (type) {
+		case '=':
+			andMode &= ~(groups);
+			/* fall through */
+		case '+':
+			orMode |= mode & groups;
+			break;
+		case '-':
+			andMode &= ~(mode & groups);
+			orMode &= andMode;
+			break;
+		}
+	} while (c == ',');
+	*theMode &= andMode;
+	*theMode |= orMode;
+	return (TRUE);
+}
+
+
+#endif
+/* BB_CHMOD_CHOWN_CHGRP || BB_MKDIR || BB_MKFIFO || BB_MKNOD */
+
+
+
+
+
+#if defined BB_CHMOD_CHOWN_CHGRP || defined BB_PS || defined BB_LS \
+ || defined BB_TAR || defined BB_ID || defined BB_LOGGER \
+ || defined BB_LOGNAME || defined BB_WHOAMI
+
+/* This parses entries in /etc/passwd and /etc/group.  This is desirable
+ * for BusyBox, since we want to avoid using the glibc NSS stuff, which
+ * increases target size and is often not needed or wanted for embedded
+ * systems.
+ *
+ * /etc/passwd entries look like this: 
+ *		root:x:0:0:root:/root:/bin/bash
+ * and /etc/group entries look like this: 
+ *		root:x:0:
+ *
+ * This uses buf as storage to hold things.
+ * 
+ */
+unsigned long my_getid(const char *filename, char *name, long id, long *gid)
+{
+	FILE *file;
+	char *rname, *start, *end, buf[128];
+	long rid;
+	long rgid = 0;
+
+	file = fopen(filename, "r");
+	if (file == NULL) {
+		/* Do not complain.  It is ok for /etc/passwd and
+		 * friends to be missing... */
+		return (-1);
+	}
+
+	while (fgets(buf, 128, file) != NULL) {
+		if (buf[0] == '#')
+			continue;
+
+		/* username/group name */
+		start = buf;
+		end = strchr(start, ':');
+		if (end == NULL)
+			continue;
+		*end = '\0';
+		rname = start;
+
+		/* password */
+		start = end + 1;
+		end = strchr(start, ':');
+		if (end == NULL)
+			continue;
+
+		/* uid in passwd, gid in group */
+		start = end + 1;
+		rid = (unsigned long) strtol(start, &end, 10);
+		if (end == start)
+			continue;
+
+		/* gid in passwd */
+		start = end + 1;
+		rgid = (unsigned long) strtol(start, &end, 10);
+		
+		if (name) {
+			if (0 == strcmp(rname, name)) {
+			    if (gid) *gid = rgid;
+				fclose(file);
+				return (rid);
+			}
+		}
+		if (id != -1 && id == rid) {
+			strncpy(name, rname, 8);
+			if (gid) *gid = rgid;
+			fclose(file);
+			return (TRUE);
+		}
+	}
+	fclose(file);
+	return (-1);
+}
+
+/* returns a uid given a username */
+long my_getpwnam(char *name)
+{
+	return my_getid("/etc/passwd", name, -1, NULL);
+}
+
+/* returns a gid given a group name */
+long my_getgrnam(char *name)
+{
+	return my_getid("/etc/group", name, -1, NULL);
+}
+
+/* gets a username given a uid */
+void my_getpwuid(char *name, long uid)
+{
+	my_getid("/etc/passwd", name, uid, NULL);
+}
+
+/* gets a groupname given a gid */
+void my_getgrgid(char *group, long gid)
+{
+	my_getid("/etc/group", group, gid, NULL);
+}
+
+/* gets a gid given a user name */
+long my_getpwnamegid(char *name)
+{
+	long gid;
+	my_getid("/etc/passwd", name, -1, &gid);
+	return gid;
+}
+
+#endif
+ /* BB_CHMOD_CHOWN_CHGRP || BB_PS || BB_LS || BB_TAR \
+ || BB_ID || BB_LOGGER || BB_LOGNAME || BB_WHOAMI */
+
+
+#if (defined BB_CHVT) || (defined BB_DEALLOCVT) || (defined BB_SETKEYCODES)
+
+/* 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)
+{
+	char arg;
+
+	arg = 0;
+	return (ioctl(fd, KDGKBTYPE, &arg) == 0
+			&& ((arg == KB_101) || (arg == KB_84)));
+}
+
+static int open_a_console(char *fnam)
+{
+	int fd;
+
+	/* try read-only */
+	fd = open(fnam, O_RDWR);
+
+	/* if failed, try read-only */
+	if (fd < 0 && errno == EACCES)
+		fd = open(fnam, O_RDONLY);
+
+	/* if failed, try write-only */
+	if (fd < 0 && errno == EACCES)
+		fd = open(fnam, O_WRONLY);
+
+	/* if failed, fail */
+	if (fd < 0)
+		return -1;
+
+	/* if not a console, fail */
+	if (!is_a_console(fd)) {
+		close(fd);
+		return -1;
+	}
+
+	/* success */
+	return fd;
+}
+
+/*
+ * Get an fd for use with kbd/console ioctls.
+ * We try several things because opening /dev/console will fail
+ * if someone else used X (which does a chown on /dev/console).
+ *
+ * if tty_name is non-NULL, try this one instead.
+ */
+
+int get_console_fd(char *tty_name)
+{
+	int fd;
+
+	if (tty_name) {
+		if (-1 == (fd = open_a_console(tty_name)))
+			return -1;
+		else
+			return fd;
+	}
+
+	fd = open_a_console("/dev/tty");
+	if (fd >= 0)
+		return fd;
+
+	fd = open_a_console("/dev/tty0");
+	if (fd >= 0)
+		return fd;
+
+	fd = open_a_console("/dev/console");
+	if (fd >= 0)
+		return fd;
+
+	for (fd = 0; fd < 3; fd++)
+		if (is_a_console(fd))
+			return fd;
+
+	errorMsg("Couldnt get a file descriptor referring to the console\n");
+	return -1;					/* total failure */
+}
+
+
+#endif							/* BB_CHVT || BB_DEALLOCVT || BB_SETKEYCODES */
+
+
+#if defined BB_FIND || defined BB_INSMOD
+/*
+ * Routine to see if a text string is matched by a wildcard pattern.
+ * Returns TRUE if the text is matched, or FALSE if it is not matched
+ * or if the pattern is invalid.
+ *  *		matches zero or more characters
+ *  ?		matches a single character
+ *  [abc]	matches 'a', 'b' or 'c'
+ *  \c		quotes character c
+ * Adapted from code written by Ingo Wilken, and
+ * then taken from sash, Copyright (c) 1999 by David I. Bell
+ * Permission is granted to use, distribute, or modify this source,
+ * provided that this copyright notice remains intact.
+ * Permission to distribute this code under the GPL has been granted.
+ */
+extern int check_wildcard_match(const char *text, const char *pattern)
+{
+	const char *retryPat;
+	const char *retryText;
+	int ch;
+	int found;
+	int len;
+
+	retryPat = NULL;
+	retryText = NULL;
+
+	while (*text || *pattern) {
+		ch = *pattern++;
+
+		switch (ch) {
+		case '*':
+			retryPat = pattern;
+			retryText = text;
+			break;
+
+		case '[':
+			found = FALSE;
+
+			while ((ch = *pattern++) != ']') {
+				if (ch == '\\')
+					ch = *pattern++;
+
+				if (ch == '\0')
+					return FALSE;
+
+				if (*text == ch)
+					found = TRUE;
+			}
+			len=strlen(text);
+			if (found == FALSE && len!=0) {
+				return FALSE;
+			}
+			if (found == TRUE) {
+				if (strlen(pattern)==0 && len==1) {
+					return TRUE;
+				}
+				if (len!=0) {
+					text++;
+					continue;
+				}
+			}
+
+			/* fall into next case */
+
+		case '?':
+			if (*text++ == '\0')
+				return FALSE;
+
+			break;
+
+		case '\\':
+			ch = *pattern++;
+
+			if (ch == '\0')
+				return FALSE;
+
+			/* fall into next case */
+
+		default:
+			if (*text == ch) {
+				if (*text)
+					text++;
+				break;
+			}
+
+			if (*text) {
+				pattern = retryPat;
+				text = ++retryText;
+				break;
+			}
+
+			return FALSE;
+		}
+
+		if (pattern == NULL)
+			return FALSE;
+	}
+
+	return TRUE;
+}
+#endif                            /* BB_FIND || BB_INSMOD */
+
+
+
+
+#if defined BB_DF || defined BB_MTAB
+/*
+ * Given a block device, find the mount table entry if that block device
+ * is mounted.
+ *
+ * Given any other file (or directory), find the mount table entry for its
+ * filesystem.
+ */
+extern struct mntent *findMountPoint(const char *name, const char *table)
+{
+	struct stat s;
+	dev_t mountDevice;
+	FILE *mountTable;
+	struct mntent *mountEntry;
+
+	if (stat(name, &s) != 0)
+		return 0;
+
+	if ((s.st_mode & S_IFMT) == S_IFBLK)
+		mountDevice = s.st_rdev;
+	else
+		mountDevice = s.st_dev;
+
+
+	if ((mountTable = setmntent(table, "r")) == 0)
+		return 0;
+
+	while ((mountEntry = getmntent(mountTable)) != 0) {
+		if (strcmp(name, mountEntry->mnt_dir) == 0
+			|| strcmp(name, mountEntry->mnt_fsname) == 0)	/* String match. */
+			break;
+		if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice)	/* Match the device. */
+			break;
+		if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice)	/* Match the directory's mount point. */
+			break;
+	}
+	endmntent(mountTable);
+	return mountEntry;
+}
+#endif							/* BB_DF || BB_MTAB */
+
+
+
+#if defined BB_DD || defined BB_TAIL
+/*
+ * Read a number with a possible multiplier.
+ * Returns -1 if the number format is illegal.
+ */
+extern long getNum(const char *cp)
+{
+	long value;
+
+	if (!isDecimal(*cp))
+		return -1;
+
+	value = 0;
+
+	while (isDecimal(*cp))
+		value = value * 10 + *cp++ - '0';
+
+	switch (*cp++) {
+	case 'M':
+	case 'm':					/* `tail' uses it traditionally */
+		value *= 1048576;
+		break;
+
+	case 'k':
+		value *= 1024;
+		break;
+
+	case 'b':
+		value *= 512;
+		break;
+
+	case 'w':
+		value *= 2;
+		break;
+
+	case '\0':
+		return value;
+
+	default:
+		return -1;
+	}
+
+	if (*cp)
+		return -1;
+
+	return value;
+}
+#endif							/* BB_DD || BB_TAIL */
+
+
+#if defined BB_INIT || defined BB_SYSLOGD 
+/* try to open up the specified device */
+extern int device_open(char *device, int mode)
+{
+	int m, f, fd = -1;
+
+	m = mode | O_NONBLOCK;
+
+	/* Retry up to 5 times */
+	for (f = 0; f < 5; f++)
+		if ((fd = open(device, m, 0600)) >= 0)
+			break;
+	if (fd < 0)
+		return fd;
+	/* Reset original flags. */
+	if (m != mode)
+		fcntl(fd, F_SETFL, mode);
+	return fd;
+}
+#endif							/* BB_INIT BB_SYSLOGD */
+
+
+#if defined BB_KILLALL || ( defined BB_FEATURE_LINUXRC && ( defined BB_HALT || defined BB_REBOOT || defined BB_POWEROFF ))
+#ifdef BB_FEATURE_USE_DEVPS_PATCH
+#include <linux/devps.h> /* For Erik's nifty devps device driver */
+#endif
+
+#if defined BB_FEATURE_USE_DEVPS_PATCH
+/* findPidByName()
+ *  
+ *  This finds the pid of the specified process,
+ *  by using the /dev/ps device driver.
+ *
+ *  Returns a list of all matching PIDs
+ */
+extern pid_t* findPidByName( char* pidName)
+{
+	int fd, i, j;
+	char device[] = "/dev/ps";
+	pid_t num_pids;
+	pid_t* pid_array = NULL;
+	pid_t* pidList=NULL;
+
+	/* open device */ 
+	fd = open(device, O_RDONLY);
+	if (fd < 0)
+		fatalError( "open failed for `%s': %s\n", device, strerror (errno));
+
+	/* Find out how many processes there are */
+	if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0) 
+		fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
+	
+	/* Allocate some memory -- grab a few extras just in case 
+	 * some new processes start up while we wait. The kernel will
+	 * just ignore any extras if we give it too many, and will trunc.
+	 * the list if we give it too few.  */
+	pid_array = (pid_t*) xcalloc( num_pids+10, sizeof(pid_t));
+	pid_array[0] = num_pids+10;
+
+	/* Now grab the pid list */
+	if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0) 
+		fatalError( "\nDEVPS_GET_PID_LIST: %s\n", strerror (errno));
+
+	/* Now search for a match */
+	for (i=1, j=0; i<pid_array[0] ; i++) {
+		char* p;
+		struct pid_info info;
+
+	    info.pid = pid_array[i];
+	    if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
+			fatalError( "\nDEVPS_GET_PID_INFO: %s\n", strerror (errno));
+
+		/* Make sure we only match on the process name */
+		p=info.command_line+1;
+		while ((*p != 0) && !isspace(*(p)) && (*(p-1) != '\\')) { 
+			(p)++;
+		}
+		if (isspace(*(p)))
+				*p='\0';
+
+		if ((strstr(info.command_line, pidName) != NULL)
+				&& (strlen(pidName) == strlen(info.command_line))) {
+			pidList=xrealloc( pidList, sizeof(pid_t) * (j+2));
+			pidList[j++]=info.pid;
+		}
+	}
+	if (pidList)
+		pidList[j]=0;
+
+	/* Free memory */
+	free( pid_array);
+
+	/* close device */
+	if (close (fd) != 0) 
+		fatalError( "close failed for `%s': %s\n",device, strerror (errno));
+
+	return pidList;
+}
+#else		/* BB_FEATURE_USE_DEVPS_PATCH */
+#if ! defined BB_FEATURE_USE_PROCFS
+#error Sorry, I depend on the /proc filesystem right now.
+#endif
+
+/* findPidByName()
+ *  
+ *  This finds the pid of the specified process.
+ *  Currently, it's implemented by rummaging through 
+ *  the proc filesystem.
+ *
+ *  Returns a list of all matching PIDs
+ */
+extern pid_t* findPidByName( char* pidName)
+{
+	DIR *dir;
+	struct dirent *next;
+	pid_t* pidList=NULL;
+	int i=0;
+
+	dir = opendir("/proc");
+	if (!dir)
+		fatalError( "Cannot open /proc: %s\n", strerror (errno));
+	
+	while ((next = readdir(dir)) != NULL) {
+		FILE *status;
+		char filename[256];
+		char buffer[256];
+
+		/* If it isn't a number, we don't want it */
+		if (!isdigit(*next->d_name))
+			continue;
+
+		sprintf(filename, "/proc/%s/cmdline", next->d_name);
+		status = fopen(filename, "r");
+		if (!status) {
+			continue;
+		}
+		fgets(buffer, 256, status);
+		fclose(status);
+
+		if (strstr(get_last_path_component(buffer), pidName) != NULL) {
+			pidList=xrealloc( pidList, sizeof(pid_t) * (i+2));
+			pidList[i++]=strtol(next->d_name, NULL, 0);
+		}
+	}
+
+	if (pidList)
+		pidList[i]=0;
+	return pidList;
+}
+#endif							/* BB_FEATURE_USE_DEVPS_PATCH */
+#endif							/* BB_KILLALL || ( BB_FEATURE_LINUXRC && ( BB_HALT || BB_REBOOT || BB_POWEROFF )) */
+
+#ifndef DMALLOC
+/* this should really be farmed out to libbusybox.a */
+extern void *xmalloc(size_t size)
+{
+	void *ptr = malloc(size);
+
+	if (!ptr)
+		fatalError("memory_exhausted");
+	return ptr;
+}
+
+extern void *xrealloc(void *old, size_t size)
+{
+	void *ptr = realloc(old, size);
+	if (!ptr)
+		fatalError("memory_exhausted");
+	return ptr;
+}
+
+extern void *xcalloc(size_t nmemb, size_t size)
+{
+	void *ptr = calloc(nmemb, size);
+	if (!ptr)
+		fatalError("memory_exhausted");
+	return ptr;
+}
+#endif
+
+#if defined BB_FEATURE_NFSMOUNT || defined BB_SH || defined BB_LS
+# ifndef DMALLOC
+extern char * xstrdup (const char *s) {
+	char *t;
+
+	if (s == NULL)
+		return NULL;
+
+	t = strdup (s);
+
+	if (t == NULL)
+		fatalError("memory_exhausted");
+
+	return t;
+}
+# endif
+#endif
+
+#if defined BB_FEATURE_NFSMOUNT
+extern char * xstrndup (const char *s, int n) {
+	char *t;
+
+	if (s == NULL)
+		fatalError("xstrndup bug");
+
+	t = xmalloc(n+1);
+	strncpy(t,s,n);
+	t[n] = 0;
+
+	return t;
+}
+#endif
+
+
+#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
+extern int vdprintf(int d, const char *format, va_list ap)
+{
+	char buf[BUF_SIZE];
+	int len;
+
+	len = vsprintf(buf, format, ap);
+	return write(d, buf, len);
+}
+#endif							/* BB_SYSLOGD */
+
+
+#if defined BB_FEATURE_MOUNT_LOOP
+#include <fcntl.h>
+#include "loop.h" /* Pull in loop device support */
+
+extern int del_loop(const char *device)
+{
+	int fd;
+
+	if ((fd = open(device, O_RDONLY)) < 0) {
+		perror(device);
+		return (FALSE);
+	}
+	if (ioctl(fd, LOOP_CLR_FD, 0) < 0) {
+		perror("ioctl: LOOP_CLR_FD");
+		return (FALSE);
+	}
+	close(fd);
+	return (TRUE);
+}
+
+extern int set_loop(const char *device, const char *file, int offset,
+					int *loopro)
+{
+	struct loop_info loopinfo;
+	int fd, ffd, mode;
+
+	mode = *loopro ? O_RDONLY : O_RDWR;
+	if ((ffd = open(file, mode)) < 0 && !*loopro
+		&& (errno != EROFS || (ffd = open(file, mode = O_RDONLY)) < 0)) {
+		perror(file);
+		return 1;
+	}
+	if ((fd = open(device, mode)) < 0) {
+		close(ffd);
+		perror(device);
+		return 1;
+	}
+	*loopro = (mode == O_RDONLY);
+
+	memset(&loopinfo, 0, sizeof(loopinfo));
+	strncpy(loopinfo.lo_name, file, LO_NAME_SIZE);
+	loopinfo.lo_name[LO_NAME_SIZE - 1] = 0;
+
+	loopinfo.lo_offset = offset;
+
+	loopinfo.lo_encrypt_key_size = 0;
+	if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
+		perror("ioctl: LOOP_SET_FD");
+		close(fd);
+		close(ffd);
+		return 1;
+	}
+	if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
+		(void) ioctl(fd, LOOP_CLR_FD, 0);
+		perror("ioctl: LOOP_SET_STATUS");
+		close(fd);
+		close(ffd);
+		return 1;
+	}
+	close(fd);
+	close(ffd);
+	return 0;
+}
+
+extern char *find_unused_loop_device(void)
+{
+	char dev[20];
+	int i, fd;
+	struct stat statbuf;
+	struct loop_info loopinfo;
+
+	for (i = 0; i <= 7; i++) {
+		sprintf(dev, "/dev/loop%d", i);
+		if (stat(dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
+			if ((fd = open(dev, O_RDONLY)) >= 0) {
+				if (ioctl(fd, LOOP_GET_STATUS, &loopinfo) == -1) {
+					if (errno == ENXIO) {	/* probably free */
+						close(fd);
+						return strdup(dev);
+					}
+				}
+				close(fd);
+			}
+		}
+	}
+	return NULL;
+}
+#endif							/* BB_FEATURE_MOUNT_LOOP */
+
+#if defined BB_MOUNT || defined BB_DF || ( defined BB_UMOUNT && ! defined BB_MTAB)
+extern int find_real_root_device_name(char* name)
+{
+	DIR *dir;
+	struct dirent *entry;
+	struct stat statBuf, rootStat;
+	char fileName[BUFSIZ];
+
+	if (stat("/", &rootStat) != 0) {
+		errorMsg("could not stat '/'\n");
+		return( FALSE);
+	}
+
+	dir = opendir("/dev");
+	if (!dir) {
+		errorMsg("could not open '/dev'\n");
+		return( FALSE);
+	}
+
+	while((entry = readdir(dir)) != NULL) {
+
+		/* Must skip ".." since that is "/", and so we 
+		 * would get a false positive on ".."  */
+		if (strcmp(entry->d_name, "..") == 0)
+			continue;
+
+		snprintf( fileName, strlen(name)+1, "/dev/%s", entry->d_name);
+
+		if (stat(fileName, &statBuf) != 0)
+			continue;
+		/* Some char devices have the same dev_t as block
+		 * devices, so make sure this is a block device */
+		if (! S_ISBLK(statBuf.st_mode))
+			continue;
+		if (statBuf.st_rdev == rootStat.st_rdev) {
+			strcpy(name, fileName); 
+			return ( TRUE);
+		}
+	}
+
+	return( FALSE);
+}
+#endif
+
+
+/* get_line_from_file() - This function reads an entire line from a text file
+ * up to a newline. It returns a malloc'ed char * which must be stored and
+ * free'ed  by the caller. */
+extern char *get_line_from_file(FILE *file)
+{
+	static const int GROWBY = 80; /* how large we will grow strings by */
+
+	int ch;
+	int idx = 0;
+	char *linebuf = NULL;
+	int linebufsz = 0;
+
+	while (1) {
+		ch = fgetc(file);
+		if (ch == EOF)
+			break;
+		/* grow the line buffer as necessary */
+		while (idx > linebufsz-2)
+			linebuf = xrealloc(linebuf, linebufsz += GROWBY);
+		linebuf[idx++] = (char)ch;
+		if ((char)ch == '\n')
+			break;
+	}
+
+	if (idx == 0)
+		return NULL;
+
+	linebuf[idx] = 0;
+	return linebuf;
+}
+
+#if defined BB_CAT
+extern void print_file(FILE *file)
+{
+	int c;
+
+	while ((c = getc(file)) != EOF)
+		putc(c, stdout);
+	fclose(file);
+	fflush(stdout);
+}
+
+extern int print_file_by_name(char *filename)
+{
+	FILE *file;
+	file = fopen(filename, "r");
+	if (file == NULL) {
+		return FALSE;
+	}
+	print_file(file);
+	return TRUE;
+}
+#endif /* BB_CAT || BB_LSMOD */
+
+#if defined BB_ECHO || defined BB_TR
+char process_escape_sequence(char **ptr)
+{
+	char c;
+
+	switch (c = *(*ptr)++) {
+	case 'a':
+		c = '\a';
+		break;
+	case 'b':
+		c = '\b';
+		break;
+	case 'f':
+		c = '\f';
+		break;
+	case 'n':
+		c = '\n';
+		break;
+	case 't':
+		c = '\t';
+		break;
+	case 'v':
+		c = '\v';
+		break;
+	case '\\':
+		c = '\\';
+		break;
+	case '0': case '1': case '2': case '3':
+	case '4': case '5': case '6': case '7':
+		c -= '0';
+		if ('0' <= **ptr && **ptr <= '7') {
+			c = c * 8 + (*(*ptr)++ - '0');
+			if ('0' <= **ptr && **ptr <= '7')
+				c = c * 8 + (*(*ptr)++ - '0');
+		}
+		break;
+	default:
+		(*ptr)--;
+		c = '\\';
+		break;
+	}
+	return c;
+}
+#endif
+
+#if defined BB_BASENAME || defined BB_LN || defined BB_SH
+char *get_last_path_component(char *path)
+{
+	char *s=path+strlen(path)-1;
+
+	/* strip trailing slashes */
+	while (s && *s == '/') {
+		*s-- = '\0';
+	}
+
+	/* find last component */
+	s = strrchr(path, '/');
+	if (s==NULL) return path;
+	else return s+1;
+}
+#endif
+
+#if defined BB_GREP || defined BB_SED
+void xregcomp(regex_t *preg, const char *regex, int cflags)
+{
+	int ret;
+	if ((ret = regcomp(preg, regex, cflags)) != 0) {
+		int errmsgsz = regerror(ret, preg, NULL, 0);
+		char *errmsg = xmalloc(errmsgsz);
+		regerror(ret, preg, errmsg, errmsgsz);
+		fatalError("bb_regcomp: %s\n", errmsg);
+	}
+}
+#endif
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/