2008-10-31 Jeff Johnston <jjohnstn@redhat.com>

        * libc/include/limits.h: Add ARG_MAX, PATH_MAX, and _POSIX2_RE_DUP_MAX.
        * libc/include/envlock.h: New file.
        * libc/include/fnmatch.h: Ditto.
        * libc/include/glob.h: Ditto.
        * libc/include/regex.h: Ditto.
        * libc/include/wordexp.h: Ditto.
        * libc/posix/Makefile.am: Add new files moved from
        libc/sys/linux/stdlib.
        * libc/posix/Makefile.in: Regenerated.
        * libc/posix/COPYRIGHT: New file moved from libc/sys/linux/stdlib.
        * libc/posix/cclass.h: Ditto.
        * libc/posix/cname.h: Ditto.
        * libc/posix/collate.c: Ditto.
        * libc/posix/collate.h: Ditto.
        * libc/posix/collcmp.c: Ditto.
        * libc/posix/engine.c: Ditto.
        * libc/posix/fnmatch.3: Ditto.
        * libc/posix/glob.3: Ditto.
        * libc/posix/fnmatch.c: Ditto.
        * libc/posix/glob.c: Ditto.
        * libc/posix/namespace.h: Ditto.
        * libc/posix/reallocf.c: Ditto.
        * libc/posix/regcomp.c: Ditto.
        * libc/posix/regerror.c: Ditto.
        * libc/posix/regex.3: Ditto.
        * libc/posix/regex2.h: Ditto.
        * libc/posix/regexec.c: Ditto.
        * libc/posix/regfree.c: Ditto.
        * libc/posix/rune.h: Ditto.
        * libc/posix/runetype.h: Ditto.
        * libc/posix/scandir.c: Remove advertising clause which is not in
        effect.
        * libc/posix/sysexits.h: Ditto.
        * libc/posix/un-namespace.h: Ditto.
        * libc/posix/utils.h: Ditto.
        * libc/posix/wordexp.c: Ditto.
        * libc/posix/wordfree.c: Ditto.
        * libc/posix/execl.c: Add !_NO_EXECVE flag check.
        * libc/posix/execle.c: Ditto.
        * libc/posix/execlp.c: Ditto.
        * libc/posix/execv.c: Ditto.
        * libc/posix/execve.c: Ditto.
        * libc/posix/execvp.c: Ditto.
        * libc/posix/popen.c: Add !_NO_POPEN flag check.
        * libc/sys/linux/configure: Regenerated.
        * libc/sys/linux/configure.in: Remove stdlib.
        * libc/sys/linux/include/limits.h: Add include of linux/limits.h.
        * libc/sys/linux/stdlib/Makefile.am: Removed.
        * libc/sys/linux/stdlib/Makefile.in: Ditto.
        * libc/sys/linux/stdlib/COPYRIGHT: Moved to libc/posix.
        * libc/sys/linux/stdlib/cclass.h: Ditto.
        * libc/sys/linux/stdlib/cname.h: Ditto.
        * libc/sys/linux/stdlib/collate.c: Ditto.
        * libc/sys/linux/stdlib/collate.h: Ditto.
        * libc/sys/linux/stdlib/collcmp.c: Ditto.
        * libc/sys/linux/stdlib/engine.c: Ditto.
        * libc/sys/linux/stdlib/fnmatch.3: Ditto.
        * libc/sys/linux/stdlib/fnmatch.c: Ditto.
        * libc/sys/linux/stdlib/glob.3: Ditto.
        * libc/sys/linux/stdlib/glob.c: Ditto.
        * libc/sys/linux/stdlib/reallocf.c: Ditto.
        * libc/sys/linux/stdlib/regcomp.c: Ditto.
        * libc/sys/linux/stdlib/regerror.c: Ditto.
        * libc/sys/linux/stdlib/regex.3: Ditto.
        * libc/sys/linux/stdlib/regex2.h: Ditto.
        * libc/sys/linux/stdlib/regexec.c: Ditto.
        * libc/sys/linux/stdlib/regfree.c: Ditto.
        * libc/sys/linux/stdlib/utils.h: Ditto.
        * libc/sys/linux/stdlib/wordexp.c: Ditto.
        * libc/sys/linux/stdlib/wordfree.c: Ditto.

1 files changed, 909 insertions, 0 deletions

diff --git a/newlib/libc/posix/glob.c b/newlib/libc/posix/glob.c
new file mode 100644
index 000000000..4dafe71aa
--- /dev/null
+++ b/newlib/libc/posix/glob.c
@@ -0,0 +1,909 @@
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _NO_GLOB
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)glob.c	8.3 (Berkeley) 10/13/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+
+/*
+ * glob(3) -- a superset of the one defined in POSIX 1003.2.
+ *
+ * The [!...] convention to negate a range is supported (SysV, Posix, ksh).
+ *
+ * Optional extra services, controlled by flags not defined by POSIX:
+ *
+ * GLOB_QUOTE:
+ *	Escaping convention: \ inhibits any special meaning the following
+ *	character might have (except \ at end of string is retained).
+ * GLOB_MAGCHAR:
+ *	Set in gl_flags if pattern contained a globbing character.
+ * GLOB_NOMAGIC:
+ *	Same as GLOB_NOCHECK, but it will only append pattern if it did
+ *	not contain any magic characters.  [Used in csh style globbing]
+ * GLOB_ALTDIRFUNC:
+ *	Use alternately specified directory access functions.
+ * GLOB_TILDE:
+ *	expand ~user/foo to the /home/dir/of/user/foo
+ * GLOB_BRACE:
+ *	expand {1,2}{a,b} to 1a 1b 2a 2b
+ * gl_matchc:
+ *	Number of matches in the current invocation of glob.
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <glob.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include "collate.h"
+
+#define	DOLLAR		'$'
+#define	DOT		'.'
+#define	EOS		'\0'
+#define	LBRACKET	'['
+#define	NOT		'!'
+#define	QUESTION	'?'
+#define	QUOTE		'\\'
+#define	RANGE		'-'
+#define	RBRACKET	']'
+#define	SEP		'/'
+#define	STAR		'*'
+#define	TILDE		'~'
+#define	UNDERSCORE	'_'
+#define	LBRACE		'{'
+#define	RBRACE		'}'
+#define	SLASH		'/'
+#define	COMMA		','
+
+#ifndef DEBUG
+
+#define	M_QUOTE		0x8000
+#define	M_PROTECT	0x4000
+#define	M_MASK		0xffff
+#define	M_ASCII		0x00ff
+
+typedef u_short Char;
+
+#else
+
+#define	M_QUOTE		0x80
+#define	M_PROTECT	0x40
+#define	M_MASK		0xff
+#define	M_ASCII		0x7f
+
+typedef char Char;
+
+#endif
+
+
+#define	CHAR(c)		((Char)((c)&M_ASCII))
+#define	META(c)		((Char)((c)|M_QUOTE))
+#define	M_ALL		META('*')
+#define	M_END		META(']')
+#define	M_NOT		META('!')
+#define	M_ONE		META('?')
+#define	M_RNG		META('-')
+#define	M_SET		META('[')
+#define	ismeta(c)	(((c)&M_QUOTE) != 0)
+
+
+static int	 compare(const void *, const void *);
+static int	 g_Ctoc(const Char *, char *, u_int);
+static int	 g_lstat(Char *, struct stat *, glob_t *);
+static DIR	*g_opendir(Char *, glob_t *);
+static Char	*g_strchr(Char *, int);
+#ifdef notdef
+static Char	*g_strcat(Char *, const Char *);
+#endif
+static int	 g_stat(Char *, struct stat *, glob_t *);
+static int	 glob0(const Char *, glob_t *, int *);
+static int	 glob1(Char *, glob_t *, int *);
+static int	 glob2(Char *, Char *, Char *, Char *, glob_t *, int *);
+static int	 glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, int *);
+static int	 globextend(const Char *, glob_t *, int *);
+static const Char *	
+		 globtilde(const Char *, Char *, size_t, glob_t *);
+static int	 globexp1(const Char *, glob_t *, int *);
+static int	 globexp2(const Char *, const Char *, glob_t *, int *, int *);
+static int	 match(Char *, Char *, Char *);
+#ifdef DEBUG
+static void	 qprintf(const char *, Char *);
+#endif
+
+int
+glob(pattern, flags, errfunc, pglob)
+	const char *pattern;
+	int flags, (*errfunc)(const char *, int);
+	glob_t *pglob;
+{
+	const u_char *patnext;
+	int c, limit;
+	Char *bufnext, *bufend, patbuf[MAXPATHLEN];
+
+	patnext = (u_char *) pattern;
+	if (!(flags & GLOB_APPEND)) {
+		pglob->gl_pathc = 0;
+		pglob->gl_pathv = NULL;
+		if (!(flags & GLOB_DOOFFS))
+			pglob->gl_offs = 0;
+	}
+	if (flags & GLOB_LIMIT) {
+		limit = pglob->gl_matchc;
+		if (limit == 0)
+			limit = ARG_MAX;
+	} else
+		limit = 0;
+	pglob->gl_flags = flags & ~GLOB_MAGCHAR;
+	pglob->gl_errfunc = errfunc;
+	pglob->gl_matchc = 0;
+
+	bufnext = patbuf;
+	bufend = bufnext + MAXPATHLEN - 1;
+	if (flags & GLOB_QUOTE) {
+		/* Protect the quoted characters. */
+		while (bufnext < bufend && (c = *patnext++) != EOS)
+			if (c == QUOTE) {
+				if ((c = *patnext++) == EOS) {
+					c = QUOTE;
+					--patnext;
+				}
+				*bufnext++ = c | M_PROTECT;
+			}
+			else
+				*bufnext++ = c;
+	}
+	else
+	    while (bufnext < bufend && (c = *patnext++) != EOS)
+		    *bufnext++ = c;
+	*bufnext = EOS;
+
+	if (flags & GLOB_BRACE)
+	    return globexp1(patbuf, pglob, &limit);
+	else
+	    return glob0(patbuf, pglob, &limit);
+}
+
+/*
+ * Expand recursively a glob {} pattern. When there is no more expansion
+ * invoke the standard globbing routine to glob the rest of the magic
+ * characters
+ */
+static int
+globexp1(pattern, pglob, limit)
+	const Char *pattern;
+	glob_t *pglob;
+	int *limit;
+{
+	const Char* ptr = pattern;
+	int rv;
+
+	/* Protect a single {}, for find(1), like csh */
+	if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS)
+		return glob0(pattern, pglob, limit);
+
+	while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL)
+		if (!globexp2(ptr, pattern, pglob, &rv, limit))
+			return rv;
+
+	return glob0(pattern, pglob, limit);
+}
+
+
+/*
+ * Recursive brace globbing helper. Tries to expand a single brace.
+ * If it succeeds then it invokes globexp1 with the new pattern.
+ * If it fails then it tries to glob the rest of the pattern and returns.
+ */
+static int
+globexp2(ptr, pattern, pglob, rv, limit)
+	const Char *ptr, *pattern;
+	glob_t *pglob;
+	int *rv, *limit;
+{
+	int     i;
+	Char   *lm, *ls;
+	const Char *pe, *pm, *pl;
+	Char    patbuf[MAXPATHLEN];
+
+	/* copy part up to the brace */
+	for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++)
+		continue;
+	*lm = EOS;
+	ls = lm;
+
+	/* Find the balanced brace */
+	for (i = 0, pe = ++ptr; *pe; pe++)
+		if (*pe == LBRACKET) {
+			/* Ignore everything between [] */
+			for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++)
+				continue;
+			if (*pe == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pe = pm;
+			}
+		}
+		else if (*pe == LBRACE)
+			i++;
+		else if (*pe == RBRACE) {
+			if (i == 0)
+				break;
+			i--;
+		}
+
+	/* Non matching braces; just glob the pattern */
+	if (i != 0 || *pe == EOS) {
+		*rv = glob0(patbuf, pglob, limit);
+		return 0;
+	}
+
+	for (i = 0, pl = pm = ptr; pm <= pe; pm++)
+		switch (*pm) {
+		case LBRACKET:
+			/* Ignore everything between [] */
+			for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++)
+				continue;
+			if (*pm == EOS) {
+				/*
+				 * We could not find a matching RBRACKET.
+				 * Ignore and just look for RBRACE
+				 */
+				pm = pl;
+			}
+			break;
+
+		case LBRACE:
+			i++;
+			break;
+
+		case RBRACE:
+			if (i) {
+			    i--;
+			    break;
+			}
+			/* FALLTHROUGH */
+		case COMMA:
+			if (i && *pm == COMMA)
+				break;
+			else {
+				/* Append the current string */
+				for (lm = ls; (pl < pm); *lm++ = *pl++)
+					continue;
+				/*
+				 * Append the rest of the pattern after the
+				 * closing brace
+				 */
+				for (pl = pe + 1; (*lm++ = *pl++) != EOS;)
+					continue;
+
+				/* Expand the current pattern */
+#ifdef DEBUG
+				qprintf("globexp2:", patbuf);
+#endif
+				*rv = globexp1(patbuf, pglob, limit);
+
+				/* move after the comma, to the next string */
+				pl = pm + 1;
+			}
+			break;
+
+		default:
+			break;
+		}
+	*rv = 0;
+	return 0;
+}
+
+
+
+/*
+ * expand tilde from the passwd file.
+ */
+static const Char *
+globtilde(pattern, patbuf, patbuf_len, pglob)
+	const Char *pattern;
+	Char *patbuf;
+	size_t patbuf_len;
+	glob_t *pglob;
+{
+	struct passwd *pwd;
+	char *h;
+	const Char *p;
+	Char *b, *eb;
+
+	if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE))
+		return pattern;
+
+	/* 
+	 * Copy up to the end of the string or / 
+	 */
+	eb = &patbuf[patbuf_len - 1];
+	for (p = pattern + 1, h = (char *) patbuf;
+	    h < (char *)eb && *p && *p != SLASH; *h++ = *p++)
+		continue;
+
+	*h = EOS;
+
+	if (((char *) patbuf)[0] == EOS) {
+		/*
+		 * handle a plain ~ or ~/ by expanding $HOME first (iff
+		 * we're not running setuid or setgid) and then trying
+		 * the password file
+		 */
+		if (
+#ifndef	__NETBSD_SYSCALLS
+		    issetugid() != 0 ||
+#endif
+		    (h = getenv("HOME")) == NULL) {
+/* If we are not EL/IX level 4, we cannot use getpwxxx interfaces */
+#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4
+			if (((h = getlogin()) != NULL &&
+			     (pwd = getpwnam(h)) != NULL) ||
+			    (pwd = getpwuid(getuid())) != NULL)
+				h = pwd->pw_dir;
+			else
+#endif /* !_ELIX_LEVEL || _ELIX_LEVEL >= 4 */
+				return pattern;
+		}
+	}
+	else {
+		/*
+		 * Expand a ~user
+		 */
+
+#if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4
+		if ((pwd = getpwnam((char*) patbuf)) != NULL)
+			h = pwd->pw_dir;
+		else
+#endif /* !_ELIX_LEVEL || _ELIX_LEVEL >= 4 */
+			return pattern;
+	}
+
+	/* Copy the home directory */
+	for (b = patbuf; b < eb && *h; *b++ = *h++)
+		continue;
+
+	/* Append the rest of the pattern */
+	while (b < eb && (*b++ = *p++) != EOS)
+		continue;
+	*b = EOS;
+
+	return patbuf;
+}
+
+
+/*
+ * The main glob() routine: compiles the pattern (optionally processing
+ * quotes), calls glob1() to do the real pattern matching, and finally
+ * sorts the list (unless unsorted operation is requested).  Returns 0
+ * if things went well, nonzero if errors occurred.  It is not an error
+ * to find no matches.
+ */
+static int
+glob0(pattern, pglob, limit)
+	const Char *pattern;
+	glob_t *pglob;
+	int *limit;
+{
+	const Char *qpatnext;
+	int c, err, oldpathc;
+	Char *bufnext, patbuf[MAXPATHLEN];
+
+	qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob);
+	oldpathc = pglob->gl_pathc;
+	bufnext = patbuf;
+
+	/* We don't need to check for buffer overflow any more. */
+	while ((c = *qpatnext++) != EOS) {
+		switch (c) {
+		case LBRACKET:
+			c = *qpatnext;
+			if (c == NOT)
+				++qpatnext;
+			if (*qpatnext == EOS ||
+			    g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) {
+				*bufnext++ = LBRACKET;
+				if (c == NOT)
+					--qpatnext;
+				break;
+			}
+			*bufnext++ = M_SET;
+			if (c == NOT)
+				*bufnext++ = M_NOT;
+			c = *qpatnext++;
+			do {
+				*bufnext++ = CHAR(c);
+				if (*qpatnext == RANGE &&
+				    (c = qpatnext[1]) != RBRACKET) {
+					*bufnext++ = M_RNG;
+					*bufnext++ = CHAR(c);
+					qpatnext += 2;
+				}
+			} while ((c = *qpatnext++) != RBRACKET);
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_END;
+			break;
+		case QUESTION:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			*bufnext++ = M_ONE;
+			break;
+		case STAR:
+			pglob->gl_flags |= GLOB_MAGCHAR;
+			/* collapse adjacent stars to one,
+			 * to avoid exponential behavior
+			 */
+			if (bufnext == patbuf || bufnext[-1] != M_ALL)
+			    *bufnext++ = M_ALL;
+			break;
+		default:
+			*bufnext++ = CHAR(c);
+			break;
+		}
+	}
+	*bufnext = EOS;
+#ifdef DEBUG
+	qprintf("glob0:", patbuf);
+#endif
+
+	if ((err = glob1(patbuf, pglob, limit)) != 0)
+		return(err);
+
+	/*
+	 * If there was no match we are going to append the pattern
+	 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified
+	 * and the pattern did not contain any magic characters
+	 * GLOB_NOMAGIC is there just for compatibility with csh.
+	 */
+	if (pglob->gl_pathc == oldpathc &&
+	    ((pglob->gl_flags & GLOB_NOCHECK) ||
+	      ((pglob->gl_flags & GLOB_NOMAGIC) &&
+	       !(pglob->gl_flags & GLOB_MAGCHAR))))
+		return(globextend(pattern, pglob, limit));
+	else if (!(pglob->gl_flags & GLOB_NOSORT))
+		qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc,
+		    pglob->gl_pathc - oldpathc, sizeof(char *), compare);
+	return(0);
+}
+
+static int
+compare(p, q)
+	const void *p, *q;
+{
+	return(strcmp(*(char **)p, *(char **)q));
+}
+
+static int
+glob1(pattern, pglob, limit)
+	Char *pattern;
+	glob_t *pglob;
+	int *limit;
+{
+	Char pathbuf[MAXPATHLEN];
+
+	/* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */
+	if (*pattern == EOS)
+		return(0);
+	return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1,
+	    pattern, pglob, limit));
+}
+
+/*
+ * The functions glob2 and glob3 are mutually recursive; there is one level
+ * of recursion for each segment in the pattern that contains one or more
+ * meta characters.
+ */
+static int
+glob2(pathbuf, pathend, pathend_last, pattern, pglob, limit)
+	Char *pathbuf, *pathend, *pathend_last, *pattern;
+	glob_t *pglob;
+	int *limit;
+{
+	struct stat sb;
+	Char *p, *q;
+	int anymeta;
+
+	/*
+	 * Loop over pattern segments until end of pattern or until
+	 * segment with meta character found.
+	 */
+	for (anymeta = 0;;) {
+		if (*pattern == EOS) {		/* End of pattern? */
+			*pathend = EOS;
+			if (g_lstat(pathbuf, &sb, pglob))
+				return(0);
+
+			if (((pglob->gl_flags & GLOB_MARK) &&
+			    pathend[-1] != SEP) && (S_ISDIR(sb.st_mode)
+			    || (S_ISLNK(sb.st_mode) &&
+			    (g_stat(pathbuf, &sb, pglob) == 0) &&
+			    S_ISDIR(sb.st_mode)))) {
+				if (pathend + 1 > pathend_last)
+					return (1);
+				*pathend++ = SEP;
+				*pathend = EOS;
+			}
+			++pglob->gl_matchc;
+			return(globextend(pathbuf, pglob, limit));
+		}
+
+		/* Find end of next segment, copy tentatively to pathend. */
+		q = pathend;
+		p = pattern;
+		while (*p != EOS && *p != SEP) {
+			if (ismeta(*p))
+				anymeta = 1;
+			if (q + 1 > pathend_last)
+				return (1);
+			*q++ = *p++;
+		}
+
+		if (!anymeta) {		/* No expansion, do next segment. */
+			pathend = q;
+			pattern = p;
+			while (*pattern == SEP) {
+				if (pathend + 1 > pathend_last)
+					return (1);
+				*pathend++ = *pattern++;
+			}
+		} else			/* Need expansion, recurse. */
+			return(glob3(pathbuf, pathend, pathend_last, pattern, p,
+			    pglob, limit));
+	}
+	/* NOTREACHED */
+}
+
+static int
+glob3(pathbuf, pathend, pathend_last, pattern, restpattern, pglob, limit)
+	Char *pathbuf, *pathend, *pathend_last, *pattern, *restpattern;
+	glob_t *pglob;
+	int *limit;
+{
+	struct dirent *dp;
+	DIR *dirp;
+	int err;
+	char buf[MAXPATHLEN];
+
+	/*
+	 * The readdirfunc declaration can't be prototyped, because it is
+	 * assigned, below, to two functions which are prototyped in glob.h
+	 * and dirent.h as taking pointers to differently typed opaque
+	 * structures.
+	 */
+	struct dirent *(*readdirfunc)();
+
+	if (pathend > pathend_last)
+		return (1);
+	*pathend = EOS;
+	errno = 0;
+
+	if ((dirp = g_opendir(pathbuf, pglob)) == NULL) {
+		/* TODO: don't call for ENOENT or ENOTDIR? */
+		if (pglob->gl_errfunc) {
+			if (g_Ctoc(pathbuf, buf, sizeof(buf)))
+				return (GLOB_ABEND);
+			if (pglob->gl_errfunc(buf, errno) ||
+			    pglob->gl_flags & GLOB_ERR)
+				return (GLOB_ABEND);
+		}
+		return(0);
+	}
+
+	err = 0;
+
+	/* Search directory for matching names. */
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		readdirfunc = pglob->gl_readdir;
+	else
+		readdirfunc = readdir;
+	while ((dp = (*readdirfunc)(dirp))) {
+		u_char *sc;
+		Char *dc;
+
+		/* Initial DOT must be matched literally. */
+		if (dp->d_name[0] == DOT && *pattern != DOT)
+			continue;
+		dc = pathend;
+		sc = (u_char *) dp->d_name;
+		while (dc < pathend_last && (*dc++ = *sc++) != EOS)
+			;
+		if (!match(pathend, pattern, restpattern)) {
+			*pathend = EOS;
+			continue;
+		}
+		err = glob2(pathbuf, --dc, pathend_last, restpattern,
+		    pglob, limit);
+		if (err)
+			break;
+	}
+
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		(*pglob->gl_closedir)(dirp);
+	else
+		closedir(dirp);
+	return(err);
+}
+
+
+/*
+ * Extend the gl_pathv member of a glob_t structure to accomodate a new item,
+ * add the new item, and update gl_pathc.
+ *
+ * This assumes the BSD realloc, which only copies the block when its size
+ * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic
+ * behavior.
+ *
+ * Return 0 if new item added, error code if memory couldn't be allocated.
+ *
+ * Invariant of the glob_t structure:
+ *	Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and
+ *	gl_pathv points to (gl_offs + gl_pathc + 1) items.
+ */
+static int
+globextend(path, pglob, limit)
+	const Char *path;
+	glob_t *pglob;
+	int *limit;
+{
+	char **pathv;
+	int i;
+	u_int newsize, len;
+	char *copy;
+	const Char *p;
+
+	if (*limit && pglob->gl_pathc > *limit) {
+		errno = 0;
+		return (GLOB_NOSPACE);
+	}
+
+	newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs);
+	pathv = pglob->gl_pathv ?
+		    realloc((char *)pglob->gl_pathv, newsize) :
+		    malloc(newsize);
+	if (pathv == NULL) {
+		if (pglob->gl_pathv) {
+			free(pglob->gl_pathv);
+			pglob->gl_pathv = NULL;
+		}
+		return(GLOB_NOSPACE);
+	}
+
+	if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) {
+		/* first time around -- clear initial gl_offs items */
+		pathv += pglob->gl_offs;
+		for (i = pglob->gl_offs; --i >= 0; )
+			*--pathv = NULL;
+	}
+	pglob->gl_pathv = pathv;
+
+	for (p = path; *p++;)
+		continue;
+	len = (size_t)(p - path);
+	if ((copy = malloc(len)) != NULL) {
+		if (g_Ctoc(path, copy, len)) {
+			free(copy);
+			return (GLOB_NOSPACE);
+		}
+		pathv[pglob->gl_offs + pglob->gl_pathc++] = copy;
+	}
+	pathv[pglob->gl_offs + pglob->gl_pathc] = NULL;
+	return(copy == NULL ? GLOB_NOSPACE : 0);
+}
+
+/*
+ * pattern matching function for filenames.  Each occurrence of the *
+ * pattern causes a recursion level.
+ */
+static int
+match(name, pat, patend)
+	Char *name, *pat, *patend;
+{
+	int ok, negate_range;
+	Char c, k;
+
+	while (pat < patend) {
+		c = *pat++;
+		switch (c & M_MASK) {
+		case M_ALL:
+			if (pat == patend)
+				return(1);
+			do
+			    if (match(name, pat, patend))
+				    return(1);
+			while (*name++ != EOS);
+			return(0);
+		case M_ONE:
+			if (*name++ == EOS)
+				return(0);
+			break;
+		case M_SET:
+			ok = 0;
+			if ((k = *name++) == EOS)
+				return(0);
+			if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS)
+				++pat;
+			while (((c = *pat++) & M_MASK) != M_END)
+				if ((*pat & M_MASK) == M_RNG) {
+					if (__collate_load_error ?
+					    CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) :
+					       __collate_range_cmp(CHAR(c), CHAR(k)) <= 0
+					    && __collate_range_cmp(CHAR(k), CHAR(pat[1])) <= 0
+					   )
+						ok = 1;
+					pat += 2;
+				} else if (c == k)
+					ok = 1;
+			if (ok == negate_range)
+				return(0);
+			break;
+		default:
+			if (*name++ != c)
+				return(0);
+			break;
+		}
+	}
+	return(*name == EOS);
+}
+
+/* Free allocated data belonging to a glob_t structure. */
+void
+globfree(pglob)
+	glob_t *pglob;
+{
+	int i;
+	char **pp;
+
+	if (pglob->gl_pathv != NULL) {
+		pp = pglob->gl_pathv + pglob->gl_offs;
+		for (i = pglob->gl_pathc; i--; ++pp)
+			if (*pp)
+				free(*pp);
+		free(pglob->gl_pathv);
+		pglob->gl_pathv = NULL;
+	}
+}
+
+static DIR *
+g_opendir(str, pglob)
+	Char *str;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	if (!*str)
+		strcpy(buf, ".");
+	else {
+		if (g_Ctoc(str, buf, sizeof(buf)))
+			return (NULL);
+	}
+
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_opendir)(buf));
+
+	return(opendir(buf));
+}
+
+static int
+g_lstat(fn, sb, pglob)
+	Char *fn;
+	struct stat *sb;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	if (g_Ctoc(fn, buf, sizeof(buf))) {
+		errno = ENAMETOOLONG;
+		return (-1);
+	}
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_lstat)(buf, sb));
+	return(lstat(buf, sb));
+}
+
+static int
+g_stat(fn, sb, pglob)
+	Char *fn;
+	struct stat *sb;
+	glob_t *pglob;
+{
+	char buf[MAXPATHLEN];
+
+	if (g_Ctoc(fn, buf, sizeof(buf))) {
+		errno = ENAMETOOLONG;
+		return (-1);
+	}
+	if (pglob->gl_flags & GLOB_ALTDIRFUNC)
+		return((*pglob->gl_stat)(buf, sb));
+	return(stat(buf, sb));
+}
+
+static Char *
+g_strchr(str, ch)
+	Char *str;
+	int ch;
+{
+	do {
+		if (*str == ch)
+			return (str);
+	} while (*str++);
+	return (NULL);
+}
+
+static int
+g_Ctoc(str, buf, len)
+	const Char *str;
+	char *buf;
+	u_int len;
+{
+
+	while (len--) {
+		if ((*buf++ = *str++) == '\0')
+			return (0);
+	}
+	return (1);
+}
+
+#ifdef DEBUG
+static void
+qprintf(str, s)
+	const char *str;
+	Char *s;
+{
+	Char *p;
+
+	(void)printf("%s:\n", str);
+	for (p = s; *p; p++)
+		(void)printf("%c", CHAR(*p));
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", *p & M_PROTECT ? '"' : ' ');
+	(void)printf("\n");
+	for (p = s; *p; p++)
+		(void)printf("%c", ismeta(*p) ? '_' : ' ');
+	(void)printf("\n");
+}
+#endif
+#endif /*  !_NO_GLOB */