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-rw-r--r--io/Makefile49
-rw-r--r--io/creat.c30
-rw-r--r--io/fcntl.h86
-rw-r--r--io/fts.c981
-rw-r--r--io/fts.h125
-rw-r--r--io/ftw.c216
-rw-r--r--io/ftw.h44
-rw-r--r--io/getdirname.c45
-rw-r--r--io/getwd.c47
-rw-r--r--io/lockf.c68
-rw-r--r--io/poll.h1
-rw-r--r--io/pwd.c38
-rw-r--r--io/sys/fcntl.h1
-rw-r--r--io/sys/poll.h65
-rw-r--r--io/sys/stat.h168
-rw-r--r--io/test-utime.c78
-rw-r--r--io/utime.h49
17 files changed, 2091 insertions, 0 deletions
diff --git a/io/Makefile b/io/Makefile
new file mode 100644
index 0000000000..639f6b75bb
--- /dev/null
+++ b/io/Makefile
@@ -0,0 +1,49 @@
+# Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library 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
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB. If
+# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+#
+# Sub-makefile for I/O portion of the library.
+#
+subdir := io
+
+headers := sys/stat.h statbuf.h \
+ fcntl.h sys/fcntl.h fcntlbits.h \
+ poll.h sys/poll.h \
+ utime.h ftw.h fts.h
+
+routines := \
+ utime \
+ mkfifo \
+ stat fstat lstat \
+ umask chmod fchmod mkdir \
+ open close read write lseek access \
+ fcntl flock lockf \
+ dup dup2 pipe \
+ creat \
+ chdir fchdir \
+ getcwd getwd getdirname \
+ chown fchown \
+ ttyname isatty \
+ link symlink readlink \
+ unlink rmdir \
+ ftw fts poll
+
+others := pwd
+tests := test-utime
+
+include ../Rules
diff --git a/io/creat.c b/io/creat.c
new file mode 100644
index 0000000000..ee935c87a4
--- /dev/null
+++ b/io/creat.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <fcntl.h>
+#include <sys/types.h>
+
+#undef creat
+
+/* Create FILE with protections MODE. */
+int
+DEFUN(creat, (file, mode), CONST char *file AND mode_t mode)
+{
+ return __open(file, O_WRONLY|O_CREAT|O_TRUNC, mode);
+}
diff --git a/io/fcntl.h b/io/fcntl.h
new file mode 100644
index 0000000000..952b2b51da
--- /dev/null
+++ b/io/fcntl.h
@@ -0,0 +1,86 @@
+/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/*
+ * POSIX Standard: 6.5 File Control Operations <fcntl.h>
+ */
+
+#ifndef _FCNTL_H
+
+#define _FCNTL_H 1
+#include <features.h>
+
+/* This must be early so <fcntlbits.h> can define types winningly. */
+__BEGIN_DECLS
+
+/* Get the definitions of O_*, F_*, FD_*: all the
+ numbers and flag bits for `open', `fcntl', et al. */
+#include <fcntlbits.h>
+
+#ifdef __USE_MISC
+#ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */
+/* Values for the second argument to access.
+ These may be OR'd together. */
+#define R_OK 4 /* Test for read permission. */
+#define W_OK 2 /* Test for write permission. */
+#define X_OK 1 /* Test for execute permission. */
+#define F_OK 0 /* Test for existence. */
+#endif
+#endif /* Use misc. */
+
+
+/* Do the file control operation described by CMD on FD.
+ The remaining arguments are interpreted depending on CMD. */
+extern int __fcntl __P ((int __fd, int __cmd, ...));
+extern int fcntl __P ((int __fd, int __cmd, ...));
+
+/* Open FILE and return a new file descriptor for it, or -1 on error.
+ OFLAG determines the type of access used. If O_CREAT is on OFLAG,
+ the third argument is taken as a `mode_t', the mode of the created file. */
+extern int __open __P ((__const char *__file, int __oflag,...));
+extern int open __P ((__const char *__file, int __oflag,...));
+
+/* Create and open FILE, with mode MODE.
+ This takes an `int' MODE argument because that is
+ what `mode_t' will be widened to. */
+extern int creat __P ((__const char *__file, __mode_t __mode));
+
+#ifdef __OPTIMIZE__
+#define creat(file, m) __open((file), O_WRONLY|O_CREAT|O_TRUNC, (m))
+#endif /* Optimizing. */
+
+#if defined (__USE_MISC) && !defined (F_LOCK)
+/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
+ files consistent. Some systems have them there and some here, and some
+ software depends on the macros being defined without including both. */
+
+/* `lockf' is a simpler interface to the locking facilities of `fcntl'.
+ LEN is always relative to the current file position.
+ The CMD argument is one of the following. */
+
+#define F_ULOCK 0 /* Unlock a previously locked region. */
+#define F_LOCK 1 /* Lock a region for exclusive use. */
+#define F_TLOCK 2 /* Test and lock a region for exclusive use. */
+#define F_TEST 3 /* Test a region for other processes locks. */
+
+extern int lockf __P ((int __fd, int __cmd, __off_t __len));
+#endif
+
+__END_DECLS
+
+#endif /* fcntl.h */
diff --git a/io/fts.c b/io/fts.c
new file mode 100644
index 0000000000..044779d595
--- /dev/null
+++ b/io/fts.c
@@ -0,0 +1,981 @@
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)fts.c 8.2 (Berkeley) 1/2/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fts.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+/* Largest alignment size needed, minus one.
+ Usually long double is the worst case. */
+#ifndef ALIGNBYTES
+#define ALIGNBYTES (__alignof__ (long double) - 1)
+#endif
+/* Align P to that size. */
+#ifndef ALIGN
+#define ALIGN(p) (((unsigned long int) (p) + ALIGNBYTES) & ~ALIGNBYTES)
+#endif
+
+
+static FTSENT *fts_alloc __P((FTS *, char *, int));
+static FTSENT *fts_build __P((FTS *, int));
+static void fts_lfree __P((FTSENT *));
+static void fts_load __P((FTS *, FTSENT *));
+static size_t fts_maxarglen __P((char * const *));
+static void fts_padjust __P((FTS *, void *));
+static int fts_palloc __P((FTS *, size_t));
+static FTSENT *fts_sort __P((FTS *, FTSENT *, int));
+static u_short fts_stat __P((FTS *, FTSENT *, int));
+
+#define ISDOT(a) (a[0] == '.' && (!a[1] || a[1] == '.' && !a[2]))
+
+#define ISSET(opt) (sp->fts_options & opt)
+#define SET(opt) (sp->fts_options |= opt)
+
+#define CHDIR(sp, path) (!ISSET(FTS_NOCHDIR) && chdir(path))
+#define FCHDIR(sp, fd) (!ISSET(FTS_NOCHDIR) && fchdir(fd))
+
+/* fts_build flags */
+#define BCHILD 1 /* fts_children */
+#define BNAMES 2 /* fts_children, names only */
+#define BREAD 3 /* fts_read */
+
+FTS *
+fts_open(argv, options, compar)
+ char * const *argv;
+ register int options;
+ int (*compar)();
+{
+ register FTS *sp;
+ register FTSENT *p, *root;
+ register int nitems;
+ FTSENT *parent, *tmp;
+ int len;
+
+ /* Options check. */
+ if (options & ~FTS_OPTIONMASK) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ /* Allocate/initialize the stream */
+ if ((sp = malloc((u_int)sizeof(FTS))) == NULL)
+ return (NULL);
+ bzero(sp, sizeof(FTS));
+ sp->fts_compar = compar;
+ sp->fts_options = options;
+
+ /* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+ if (ISSET(FTS_LOGICAL))
+ SET(FTS_NOCHDIR);
+
+ /*
+ * Start out with 1K of path space, and enough, in any case,
+ * to hold the user's paths.
+ */
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 1024
+#endif
+ if (fts_palloc(sp, MAX(fts_maxarglen(argv), MAXPATHLEN)))
+ goto mem1;
+
+ /* Allocate/initialize root's parent. */
+ if ((parent = fts_alloc(sp, "", 0)) == NULL)
+ goto mem2;
+ parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+ /* Allocate/initialize root(s). */
+ for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) {
+ /* Don't allow zero-length paths. */
+ if ((len = strlen(*argv)) == 0) {
+ errno = ENOENT;
+ goto mem3;
+ }
+
+ p = fts_alloc(sp, *argv, len);
+ p->fts_level = FTS_ROOTLEVEL;
+ p->fts_parent = parent;
+ p->fts_accpath = p->fts_name;
+ p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW));
+
+ /* Command-line "." and ".." are real directories. */
+ if (p->fts_info == FTS_DOT)
+ p->fts_info = FTS_D;
+
+ /*
+ * If comparison routine supplied, traverse in sorted
+ * order; otherwise traverse in the order specified.
+ */
+ if (compar) {
+ p->fts_link = root;
+ root = p;
+ } else {
+ p->fts_link = NULL;
+ if (root == NULL)
+ tmp = root = p;
+ else {
+ tmp->fts_link = p;
+ tmp = p;
+ }
+ }
+ }
+ if (compar && nitems > 1)
+ root = fts_sort(sp, root, nitems);
+
+ /*
+ * Allocate a dummy pointer and make fts_read think that we've just
+ * finished the node before the root(s); set p->fts_info to FTS_INIT
+ * so that everything about the "current" node is ignored.
+ */
+ if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
+ goto mem3;
+ sp->fts_cur->fts_link = root;
+ sp->fts_cur->fts_info = FTS_INIT;
+
+ /*
+ * If using chdir(2), grab a file descriptor pointing to dot to insure
+ * that we can get back here; this could be avoided for some paths,
+ * but almost certainly not worth the effort. Slashes, symbolic links,
+ * and ".." are all fairly nasty problems. Note, if we can't get the
+ * descriptor we run anyway, just more slowly.
+ */
+ if (!ISSET(FTS_NOCHDIR) && (sp->fts_rfd = open(".", O_RDONLY, 0)) < 0)
+ SET(FTS_NOCHDIR);
+
+ return (sp);
+
+mem3: fts_lfree(root);
+ free(parent);
+mem2: free(sp->fts_path);
+mem1: free(sp);
+ return (NULL);
+}
+
+static void
+fts_load(sp, p)
+ FTS *sp;
+ register FTSENT *p;
+{
+ register int len;
+ register char *cp;
+
+ /*
+ * Load the stream structure for the next traversal. Since we don't
+ * actually enter the directory until after the preorder visit, set
+ * the fts_accpath field specially so the chdir gets done to the right
+ * place and the user can access the first node. From fts_open it's
+ * known that the path will fit.
+ */
+ len = p->fts_pathlen = p->fts_namelen;
+ bcopy(p->fts_name, sp->fts_path, len + 1);
+ if ((cp = rindex(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+ len = strlen(++cp);
+ bcopy(cp, p->fts_name, len + 1);
+ p->fts_namelen = len;
+ }
+ p->fts_accpath = p->fts_path = sp->fts_path;
+ sp->fts_dev = p->fts_dev;
+}
+
+int
+fts_close(sp)
+ FTS *sp;
+{
+ register FTSENT *freep, *p;
+ int saved_errno;
+
+ /*
+ * This still works if we haven't read anything -- the dummy structure
+ * points to the root list, so we step through to the end of the root
+ * list which has a valid parent pointer.
+ */
+ if (sp->fts_cur) {
+ for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+ freep = p;
+ p = p->fts_link ? p->fts_link : p->fts_parent;
+ free(freep);
+ }
+ free(p);
+ }
+
+ /* Free up child linked list, sort array, path buffer. */
+ if (sp->fts_child)
+ fts_lfree(sp->fts_child);
+ if (sp->fts_array)
+ free(sp->fts_array);
+ free(sp->fts_path);
+
+ /* Return to original directory, save errno if necessary. */
+ if (!ISSET(FTS_NOCHDIR)) {
+ saved_errno = fchdir(sp->fts_rfd) ? errno : 0;
+ (void)close(sp->fts_rfd);
+ }
+
+ /* Free up the stream pointer. */
+ free(sp);
+
+ /* Set errno and return. */
+ if (!ISSET(FTS_NOCHDIR) && saved_errno) {
+ errno = saved_errno;
+ return (-1);
+ }
+ return (0);
+}
+
+/*
+ * Special case a root of "/" so that slashes aren't appended which would
+ * cause paths to be written as "//foo".
+ */
+#define NAPPEND(p) \
+ (p->fts_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 && \
+ p->fts_path[0] == '/' ? 0 : p->fts_pathlen)
+
+FTSENT *
+fts_read(sp)
+ register FTS *sp;
+{
+ register FTSENT *p, *tmp;
+ register int instr;
+ register char *t;
+ int saved_errno;
+
+ /* If finished or unrecoverable error, return NULL. */
+ if (sp->fts_cur == NULL || ISSET(FTS_STOP))
+ return (NULL);
+
+ /* Set current node pointer. */
+ p = sp->fts_cur;
+
+ /* Save and zero out user instructions. */
+ instr = p->fts_instr;
+ p->fts_instr = FTS_NOINSTR;
+
+ /* Any type of file may be re-visited; re-stat and re-turn. */
+ if (instr == FTS_AGAIN) {
+ p->fts_info = fts_stat(sp, p, 0);
+ return (p);
+ }
+
+ /*
+ * Following a symlink -- SLNONE test allows application to see
+ * SLNONE and recover. If indirecting through a symlink, have
+ * keep a pointer to current location. If unable to get that
+ * pointer, follow fails.
+ */
+ if (instr == FTS_FOLLOW &&
+ (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+ p->fts_info = fts_stat(sp, p, 1);
+ if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+ if ((p->fts_symfd = open(".", O_RDONLY, 0)) < 0) {
+ p->fts_errno = errno;
+ p->fts_info = FTS_ERR;
+ } else
+ p->fts_flags |= FTS_SYMFOLLOW;
+ return (p);
+ }
+
+ /* Directory in pre-order. */
+ if (p->fts_info == FTS_D) {
+ /* If skipped or crossed mount point, do post-order visit. */
+ if (instr == FTS_SKIP ||
+ ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev) {
+ if (p->fts_flags & FTS_SYMFOLLOW)
+ (void)close(p->fts_symfd);
+ if (sp->fts_child) {
+ fts_lfree(sp->fts_child);
+ sp->fts_child = NULL;
+ }
+ p->fts_info = FTS_DP;
+ return (p);
+ }
+
+ /* Rebuild if only read the names and now traversing. */
+ if (sp->fts_child && sp->fts_options & FTS_NAMEONLY) {
+ sp->fts_options &= ~FTS_NAMEONLY;
+ fts_lfree(sp->fts_child);
+ sp->fts_child = NULL;
+ }
+
+ /*
+ * Cd to the subdirectory.
+ *
+ * If have already read and now fail to chdir, whack the list
+ * to make the names come out right, and set the parent errno
+ * so the application will eventually get an error condition.
+ * Set the FTS_DONTCHDIR flag so that when we logically change
+ * directories back to the parent we don't do a chdir.
+ *
+ * If haven't read do so. If the read fails, fts_build sets
+ * FTS_STOP or the fts_info field of the node.
+ */
+ if (sp->fts_child) {
+ if (CHDIR(sp, p->fts_accpath)) {
+ p->fts_errno = errno;
+ p->fts_flags |= FTS_DONTCHDIR;
+ for (p = sp->fts_child; p; p = p->fts_link)
+ p->fts_accpath =
+ p->fts_parent->fts_accpath;
+ }
+ } else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
+ if (ISSET(FTS_STOP))
+ return (NULL);
+ return (p);
+ }
+ p = sp->fts_child;
+ sp->fts_child = NULL;
+ goto name;
+ }
+
+ /* Move to the next node on this level. */
+next: tmp = p;
+ if (p = p->fts_link) {
+ free(tmp);
+
+ /*
+ * If reached the top, return to the original directory, and
+ * load the paths for the next root.
+ */
+ if (p->fts_level == FTS_ROOTLEVEL) {
+ if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+ SET(FTS_STOP);
+ return (NULL);
+ }
+ fts_load(sp, p);
+ return (sp->fts_cur = p);
+ }
+
+ /*
+ * User may have called fts_set on the node. If skipped,
+ * ignore. If followed, get a file descriptor so we can
+ * get back if necessary.
+ */
+ if (p->fts_instr == FTS_SKIP)
+ goto next;
+ if (p->fts_instr == FTS_FOLLOW) {
+ p->fts_info = fts_stat(sp, p, 1);
+ if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR))
+ if ((p->fts_symfd =
+ open(".", O_RDONLY, 0)) < 0) {
+ p->fts_errno = errno;
+ p->fts_info = FTS_ERR;
+ } else
+ p->fts_flags |= FTS_SYMFOLLOW;
+ p->fts_instr = FTS_NOINSTR;
+ }
+
+name: t = sp->fts_path + NAPPEND(p->fts_parent);
+ *t++ = '/';
+ bcopy(p->fts_name, t, p->fts_namelen + 1);
+ return (sp->fts_cur = p);
+ }
+
+ /* Move up to the parent node. */
+ p = tmp->fts_parent;
+ free(tmp);
+
+ if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+ /*
+ * Done; free everything up and set errno to 0 so the user
+ * can distinguish between error and EOF.
+ */
+ free(p);
+ errno = 0;
+ return (sp->fts_cur = NULL);
+ }
+
+ /* Nul terminate the pathname. */
+ sp->fts_path[p->fts_pathlen] = '\0';
+
+ /*
+ * Return to the parent directory. If at a root node or came through
+ * a symlink, go back through the file descriptor. Otherwise, cd up
+ * one directory.
+ */
+ if (p->fts_level == FTS_ROOTLEVEL) {
+ if (!ISSET(FTS_NOCHDIR) && FCHDIR(sp, sp->fts_rfd)) {
+ SET(FTS_STOP);
+ return (NULL);
+ }
+ } else if (p->fts_flags & FTS_SYMFOLLOW) {
+ if (FCHDIR(sp, p->fts_symfd)) {
+ saved_errno = errno;
+ (void)close(p->fts_symfd);
+ errno = saved_errno;
+ SET(FTS_STOP);
+ return (NULL);
+ }
+ (void)close(p->fts_symfd);
+ } else if (!(p->fts_flags & FTS_DONTCHDIR)) {
+ if (CHDIR(sp, "..")) {
+ SET(FTS_STOP);
+ return (NULL);
+ }
+ }
+ p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+ return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set. An error return is allowed for similar
+ * reasons.
+ */
+/* ARGSUSED */
+int
+fts_set(sp, p, instr)
+ FTS *sp;
+ FTSENT *p;
+ int instr;
+{
+ if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+ instr != FTS_NOINSTR && instr != FTS_SKIP) {
+ errno = EINVAL;
+ return (1);
+ }
+ p->fts_instr = instr;
+ return (0);
+}
+
+FTSENT *
+fts_children(sp, instr)
+ register FTS *sp;
+ int instr;
+{
+ register FTSENT *p;
+ int fd;
+
+ if (instr && instr != FTS_NAMEONLY) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ /* Set current node pointer. */
+ p = sp->fts_cur;
+
+ /*
+ * Errno set to 0 so user can distinguish empty directory from
+ * an error.
+ */
+ errno = 0;
+
+ /* Fatal errors stop here. */
+ if (ISSET(FTS_STOP))
+ return (NULL);
+
+ /* Return logical hierarchy of user's arguments. */
+ if (p->fts_info == FTS_INIT)
+ return (p->fts_link);
+
+ /*
+ * If not a directory being visited in pre-order, stop here. Could
+ * allow FTS_DNR, assuming the user has fixed the problem, but the
+ * same effect is available with FTS_AGAIN.
+ */
+ if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+ return (NULL);
+
+ /* Free up any previous child list. */
+ if (sp->fts_child)
+ fts_lfree(sp->fts_child);
+
+ if (instr == FTS_NAMEONLY) {
+ sp->fts_options |= FTS_NAMEONLY;
+ instr = BNAMES;
+ } else
+ instr = BCHILD;
+
+ /*
+ * If using chdir on a relative path and called BEFORE fts_read does
+ * its chdir to the root of a traversal, we can lose -- we need to
+ * chdir into the subdirectory, and we don't know where the current
+ * directory is, so we can't get back so that the upcoming chdir by
+ * fts_read will work.
+ */
+ if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+ ISSET(FTS_NOCHDIR))
+ return (sp->fts_child = fts_build(sp, instr));
+
+ if ((fd = open(".", O_RDONLY, 0)) < 0)
+ return (NULL);
+ sp->fts_child = fts_build(sp, instr);
+ if (fchdir(fd))
+ return (NULL);
+ (void)close(fd);
+ return (sp->fts_child);
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here. The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read. There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls. If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly. First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry. Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls. The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+fts_build(sp, type)
+ register FTS *sp;
+ int type;
+{
+ register struct dirent *dp;
+ register FTSENT *p, *head;
+ register int nitems;
+ FTSENT *cur, *tail;
+ DIR *dirp;
+ void *adjaddr;
+ int cderrno, descend, len, level, maxlen, nlinks, saved_errno;
+ char *cp;
+
+ /* Set current node pointer. */
+ cur = sp->fts_cur;
+
+ /*
+ * Open the directory for reading. If this fails, we're done.
+ * If being called from fts_read, set the fts_info field.
+ */
+ if ((dirp = opendir(cur->fts_accpath)) == NULL) {
+ if (type == BREAD) {
+ cur->fts_info = FTS_DNR;
+ cur->fts_errno = errno;
+ }
+ return (NULL);
+ }
+
+ /*
+ * Nlinks is the number of possible entries of type directory in the
+ * directory if we're cheating on stat calls, 0 if we're not doing
+ * any stat calls at all, -1 if we're doing stats on everything.
+ */
+ if (type == BNAMES)
+ nlinks = 0;
+ else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL))
+ nlinks = cur->fts_nlink - (ISSET(FTS_SEEDOT) ? 0 : 2);
+ else
+ nlinks = -1;
+
+#ifdef notdef
+ (void)printf("nlinks == %d (cur: %d)\n", nlinks, cur->fts_nlink);
+ (void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+ ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
+#endif
+ /*
+ * If we're going to need to stat anything or we want to descend
+ * and stay in the directory, chdir. If this fails we keep going,
+ * but set a flag so we don't chdir after the post-order visit.
+ * We won't be able to stat anything, but we can still return the
+ * names themselves. Note, that since fts_read won't be able to
+ * chdir into the directory, it will have to return different path
+ * names than before, i.e. "a/b" instead of "b". Since the node
+ * has already been visited in pre-order, have to wait until the
+ * post-order visit to return the error. There is a special case
+ * here, if there was nothing to stat then it's not an error to
+ * not be able to stat. This is all fairly nasty. If a program
+ * needed sorted entries or stat information, they had better be
+ * checking FTS_NS on the returned nodes.
+ */
+ cderrno = 0;
+ if (nlinks || type == BREAD)
+ if (FCHDIR(sp, dirfd(dirp))) {
+ if (nlinks && type == BREAD)
+ cur->fts_errno = errno;
+ cur->fts_flags |= FTS_DONTCHDIR;
+ descend = 0;
+ cderrno = errno;
+ } else
+ descend = 1;
+ else
+ descend = 0;
+
+ /*
+ * Figure out the max file name length that can be stored in the
+ * current path -- the inner loop allocates more path as necessary.
+ * We really wouldn't have to do the maxlen calculations here, we
+ * could do them in fts_read before returning the path, but it's a
+ * lot easier here since the length is part of the dirent structure.
+ *
+ * If not changing directories set a pointer so that can just append
+ * each new name into the path.
+ */
+ maxlen = sp->fts_pathlen - cur->fts_pathlen - 1;
+ len = NAPPEND(cur);
+ if (ISSET(FTS_NOCHDIR)) {
+ cp = sp->fts_path + len;
+ *cp++ = '/';
+ }
+
+ level = cur->fts_level + 1;
+
+ /* Read the directory, attaching each entry to the `link' pointer. */
+ adjaddr = NULL;
+ for (head = tail = NULL, nitems = 0; dp = readdir(dirp);) {
+ if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
+ continue;
+
+ if ((p = fts_alloc(sp, dp->d_name, (int)dp->d_namlen)) == NULL)
+ goto mem1;
+ if (dp->d_namlen > maxlen) {
+ if (fts_palloc(sp, (size_t)dp->d_namlen)) {
+ /*
+ * No more memory for path or structures. Save
+ * errno, free up the current structure and the
+ * structures already allocated.
+ */
+mem1: saved_errno = errno;
+ if (p)
+ free(p);
+ fts_lfree(head);
+ (void)closedir(dirp);
+ errno = saved_errno;
+ cur->fts_info = FTS_ERR;
+ SET(FTS_STOP);
+ return (NULL);
+ }
+ adjaddr = sp->fts_path;
+ maxlen = sp->fts_pathlen - sp->fts_cur->fts_pathlen - 1;
+ }
+
+ p->fts_pathlen = len + dp->d_namlen + 1;
+ p->fts_parent = sp->fts_cur;
+ p->fts_level = level;
+
+ if (cderrno) {
+ if (nlinks) {
+ p->fts_info = FTS_NS;
+ p->fts_errno = cderrno;
+ } else
+ p->fts_info = FTS_NSOK;
+ p->fts_accpath = cur->fts_accpath;
+ } else if (nlinks == 0
+#ifdef DT_DIR
+ || nlinks > 0 &&
+ dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN
+#endif
+ ) {
+ p->fts_accpath =
+ ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+ p->fts_info = FTS_NSOK;
+ } else {
+ /* Build a file name for fts_stat to stat. */
+ if (ISSET(FTS_NOCHDIR)) {
+ p->fts_accpath = p->fts_path;
+ bcopy(p->fts_name, cp, p->fts_namelen + 1);
+ } else
+ p->fts_accpath = p->fts_name;
+ /* Stat it. */
+ p->fts_info = fts_stat(sp, p, 0);
+
+ /* Decrement link count if applicable. */
+ if (nlinks > 0 && (p->fts_info == FTS_D ||
+ p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+ --nlinks;
+ }
+
+ /* We walk in directory order so "ls -f" doesn't get upset. */
+ p->fts_link = NULL;
+ if (head == NULL)
+ head = tail = p;
+ else {
+ tail->fts_link = p;
+ tail = p;
+ }
+ ++nitems;
+ }
+ (void)closedir(dirp);
+
+ /*
+ * If had to realloc the path, adjust the addresses for the rest
+ * of the tree.
+ */
+ if (adjaddr)
+ fts_padjust(sp, adjaddr);
+
+ /*
+ * If not changing directories, reset the path back to original
+ * state.
+ */
+ if (ISSET(FTS_NOCHDIR)) {
+ if (cp - 1 > sp->fts_path)
+ --cp;
+ *cp = '\0';
+ }
+
+ /*
+ * If descended after called from fts_children or called from
+ * fts_read and didn't find anything, get back. If can't get
+ * back, done.
+ */
+ if (descend && (!nitems || type == BCHILD) && CHDIR(sp, "..")) {
+ cur->fts_info = FTS_ERR;
+ SET(FTS_STOP);
+ return (NULL);
+ }
+
+ /* If didn't find anything, return NULL. */
+ if (!nitems) {
+ if (type == BREAD)
+ cur->fts_info = FTS_DP;
+ return (NULL);
+ }
+
+ /* Sort the entries. */
+ if (sp->fts_compar && nitems > 1)
+ head = fts_sort(sp, head, nitems);
+ return (head);
+}
+
+static u_short
+fts_stat(sp, p, follow)
+ FTS *sp;
+ register FTSENT *p;
+ int follow;
+{
+ register FTSENT *t;
+ register dev_t dev;
+ register ino_t ino;
+ struct stat *sbp, sb;
+ int saved_errno;
+
+ /* If user needs stat info, stat buffer already allocated. */
+ sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+ /*
+ * If doing a logical walk, or application requested FTS_FOLLOW, do
+ * a stat(2). If that fails, check for a non-existent symlink. If
+ * fail, set the errno from the stat call.
+ */
+ if (ISSET(FTS_LOGICAL) || follow) {
+ if (stat(p->fts_accpath, sbp)) {
+ saved_errno = errno;
+ if (!lstat(p->fts_accpath, sbp)) {
+ errno = 0;
+ return (FTS_SLNONE);
+ }
+ p->fts_errno = saved_errno;
+ goto err;
+ }
+ } else if (lstat(p->fts_accpath, sbp)) {
+ p->fts_errno = errno;
+err: bzero(sbp, sizeof(struct stat));
+ return (FTS_NS);
+ }
+
+ if (S_ISDIR(sbp->st_mode)) {
+ /*
+ * Set the device/inode. Used to find cycles and check for
+ * crossing mount points. Also remember the link count, used
+ * in fts_build to limit the number of stat calls. It is
+ * understood that these fields are only referenced if fts_info
+ * is set to FTS_D.
+ */
+ dev = p->fts_dev = sbp->st_dev;
+ ino = p->fts_ino = sbp->st_ino;
+ p->fts_nlink = sbp->st_nlink;
+
+ if (ISDOT(p->fts_name))
+ return (FTS_DOT);
+
+ /*
+ * Cycle detection is done by brute force when the directory
+ * is first encountered. If the tree gets deep enough or the
+ * number of symbolic links to directories is high enough,
+ * something faster might be worthwhile.
+ */
+ for (t = p->fts_parent;
+ t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+ if (ino == t->fts_ino && dev == t->fts_dev) {
+ p->fts_cycle = t;
+ return (FTS_DC);
+ }
+ return (FTS_D);
+ }
+ if (S_ISLNK(sbp->st_mode))
+ return (FTS_SL);
+ if (S_ISREG(sbp->st_mode))
+ return (FTS_F);
+ return (FTS_DEFAULT);
+}
+
+static FTSENT *
+fts_sort(sp, head, nitems)
+ FTS *sp;
+ FTSENT *head;
+ register int nitems;
+{
+ register FTSENT **ap, *p;
+
+ /*
+ * Construct an array of pointers to the structures and call qsort(3).
+ * Reassemble the array in the order returned by qsort. If unable to
+ * sort for memory reasons, return the directory entries in their
+ * current order. Allocate enough space for the current needs plus
+ * 40 so don't realloc one entry at a time.
+ */
+ if (nitems > sp->fts_nitems) {
+ sp->fts_nitems = nitems + 40;
+ if ((sp->fts_array = realloc(sp->fts_array,
+ (size_t)(sp->fts_nitems * sizeof(FTSENT *)))) == NULL) {
+ sp->fts_nitems = 0;
+ return (head);
+ }
+ }
+ for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+ *ap++ = p;
+ qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), sp->fts_compar);
+ for (head = *(ap = sp->fts_array); --nitems; ++ap)
+ ap[0]->fts_link = ap[1];
+ ap[0]->fts_link = NULL;
+ return (head);
+}
+
+static FTSENT *
+fts_alloc(sp, name, namelen)
+ FTS *sp;
+ char *name;
+ register int namelen;
+{
+ register FTSENT *p;
+ size_t len;
+
+ /*
+ * The file name is a variable length array and no stat structure is
+ * necessary if the user has set the nostat bit. Allocate the FTSENT
+ * structure, the file name and the stat structure in one chunk, but
+ * be careful that the stat structure is reasonably aligned. Since the
+ * fts_name field is declared to be of size 1, the fts_name pointer is
+ * namelen + 2 before the first possible address of the stat structure.
+ */
+ len = sizeof(FTSENT) + namelen;
+ if (!ISSET(FTS_NOSTAT))
+ len += sizeof(struct stat) + ALIGNBYTES;
+ if ((p = malloc(len)) == NULL)
+ return (NULL);
+
+ /* Copy the name plus the trailing NULL. */
+ bcopy(name, p->fts_name, namelen + 1);
+
+ if (!ISSET(FTS_NOSTAT))
+ p->fts_statp = (struct stat *)ALIGN(p->fts_name + namelen + 2);
+ p->fts_namelen = namelen;
+ p->fts_path = sp->fts_path;
+ p->fts_errno = 0;
+ p->fts_flags = 0;
+ p->fts_instr = FTS_NOINSTR;
+ p->fts_number = 0;
+ p->fts_pointer = NULL;
+ return (p);
+}
+
+static void
+fts_lfree(head)
+ register FTSENT *head;
+{
+ register FTSENT *p;
+
+ /* Free a linked list of structures. */
+ while (p = head) {
+ head = head->fts_link;
+ free(p);
+ }
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than MAXPATHLEN, even
+ * though the kernel won't resolve them. Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(sp, more)
+ FTS *sp;
+ size_t more;
+{
+ sp->fts_pathlen += more + 256;
+ sp->fts_path = realloc(sp->fts_path, (size_t)sp->fts_pathlen);
+ return (sp->fts_path == NULL);
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(sp, addr)
+ FTS *sp;
+ void *addr;
+{
+ FTSENT *p;
+
+#define ADJUST(p) { \
+ (p)->fts_accpath = \
+ (char *)addr + ((p)->fts_accpath - (p)->fts_path); \
+ (p)->fts_path = addr; \
+}
+ /* Adjust the current set of children. */
+ for (p = sp->fts_child; p; p = p->fts_link)
+ ADJUST(p);
+
+ /* Adjust the rest of the tree. */
+ for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+ ADJUST(p);
+ p = p->fts_link ? p->fts_link : p->fts_parent;
+ }
+}
+
+static size_t
+fts_maxarglen(argv)
+ char * const *argv;
+{
+ size_t len, max;
+
+ for (max = 0; *argv; ++argv)
+ if ((len = strlen(*argv)) > max)
+ max = len;
+ return (max);
+}
diff --git a/io/fts.h b/io/fts.h
new file mode 100644
index 0000000000..84dbe14bc7
--- /dev/null
+++ b/io/fts.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ *
+ * @(#)fts.h 8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _FTS_H_
+#define _FTS_H_
+
+typedef struct {
+ struct _ftsent *fts_cur; /* current node */
+ struct _ftsent *fts_child; /* linked list of children */
+ struct _ftsent **fts_array; /* sort array */
+ dev_t fts_dev; /* starting device # */
+ char *fts_path; /* path for this descent */
+ int fts_rfd; /* fd for root */
+ int fts_pathlen; /* sizeof(path) */
+ int fts_nitems; /* elements in the sort array */
+ int (*fts_compar)(); /* compare function */
+
+#define FTS_COMFOLLOW 0x001 /* follow command line symlinks */
+#define FTS_LOGICAL 0x002 /* logical walk */
+#define FTS_NOCHDIR 0x004 /* don't change directories */
+#define FTS_NOSTAT 0x008 /* don't get stat info */
+#define FTS_PHYSICAL 0x010 /* physical walk */
+#define FTS_SEEDOT 0x020 /* return dot and dot-dot */
+#define FTS_XDEV 0x040 /* don't cross devices */
+#define FTS_OPTIONMASK 0x07f /* valid user option mask */
+
+#define FTS_NAMEONLY 0x080 /* (private) child names only */
+#define FTS_STOP 0x100 /* (private) unrecoverable error */
+ int fts_options; /* fts_open options, global flags */
+} FTS;
+
+typedef struct _ftsent {
+ struct _ftsent *fts_cycle; /* cycle node */
+ struct _ftsent *fts_parent; /* parent directory */
+ struct _ftsent *fts_link; /* next file in directory */
+ long fts_number; /* local numeric value */
+ void *fts_pointer; /* local address value */
+ char *fts_accpath; /* access path */
+ char *fts_path; /* root path */
+ int fts_errno; /* errno for this node */
+ int fts_symfd; /* fd for symlink */
+ u_short fts_pathlen; /* strlen(fts_path) */
+ u_short fts_namelen; /* strlen(fts_name) */
+
+ ino_t fts_ino; /* inode */
+ dev_t fts_dev; /* device */
+ nlink_t fts_nlink; /* link count */
+
+#define FTS_ROOTPARENTLEVEL -1
+#define FTS_ROOTLEVEL 0
+ short fts_level; /* depth (-1 to N) */
+
+#define FTS_D 1 /* preorder directory */
+#define FTS_DC 2 /* directory that causes cycles */
+#define FTS_DEFAULT 3 /* none of the above */
+#define FTS_DNR 4 /* unreadable directory */
+#define FTS_DOT 5 /* dot or dot-dot */
+#define FTS_DP 6 /* postorder directory */
+#define FTS_ERR 7 /* error; errno is set */
+#define FTS_F 8 /* regular file */
+#define FTS_INIT 9 /* initialized only */
+#define FTS_NS 10 /* stat(2) failed */
+#define FTS_NSOK 11 /* no stat(2) requested */
+#define FTS_SL 12 /* symbolic link */
+#define FTS_SLNONE 13 /* symbolic link without target */
+ u_short fts_info; /* user flags for FTSENT structure */
+
+#define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */
+#define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */
+ u_short fts_flags; /* private flags for FTSENT structure */
+
+#define FTS_AGAIN 1 /* read node again */
+#define FTS_FOLLOW 2 /* follow symbolic link */
+#define FTS_NOINSTR 3 /* no instructions */
+#define FTS_SKIP 4 /* discard node */
+ u_short fts_instr; /* fts_set() instructions */
+
+ struct stat *fts_statp; /* stat(2) information */
+ char fts_name[1]; /* file name */
+} FTSENT;
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+FTSENT *fts_children __P((FTS *, int));
+int fts_close __P((FTS *));
+FTS *fts_open __P((char * const *, int,
+ int (*)(const FTSENT **, const FTSENT **)));
+FTSENT *fts_read __P((FTS *));
+int fts_set __P((FTS *, FTSENT *, int));
+__END_DECLS
+
+#endif /* !_FTS_H_ */
diff --git a/io/ftw.c b/io/ftw.c
new file mode 100644
index 0000000000..7b264e032e
--- /dev/null
+++ b/io/ftw.c
@@ -0,0 +1,216 @@
+/* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ian Lance Taylor (ian@airs.com).
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ftw.h>
+
+
+#ifndef PATH_MAX
+#define PATH_MAX 1024 /* XXX */
+#endif
+
+
+/* Traverse one level of a directory tree. */
+
+static int
+DEFUN (ftw_dir, (dirs, level, descriptors, dir, len, func),
+ DIR **dirs AND int level AND int descriptors AND
+ char *dir AND size_t len AND
+ int EXFUN((*func), (CONST char *file, struct stat *status,
+ int flag)))
+{
+ int got;
+ struct dirent *entry;
+
+ got = 0;
+
+ errno = 0;
+
+ while ((entry = readdir (dirs[level])) != NULL)
+ {
+ struct stat s;
+ int flag, retval, newlev;
+
+ ++got;
+
+ if (entry->d_name[0] == '.'
+ && (entry->d_namlen == 1 ||
+ (entry->d_namlen == 2 && entry->d_name[1] == '.')))
+ {
+ errno = 0;
+ continue;
+ }
+
+ if (entry->d_namlen + len + 1 > PATH_MAX)
+ {
+#ifdef ENAMETOOLONG
+ errno = ENAMETOOLONG;
+#else
+ errno = ENOMEM;
+#endif
+ return -1;
+ }
+
+ dir[len] = '/';
+ memcpy ((PTR) (dir + len + 1), (PTR) entry->d_name,
+ entry->d_namlen + 1);
+
+ if (stat (dir, &s) < 0)
+ {
+ if (errno != EACCES && errno != ENOENT)
+ return -1;
+ flag = FTW_NS;
+ }
+ else if (S_ISDIR (s.st_mode))
+ {
+ newlev = (level + 1) % descriptors;
+
+ if (dirs[newlev] != NULL)
+ closedir (dirs[newlev]);
+
+ dirs[newlev] = opendir (dir);
+ if (dirs[newlev] != NULL)
+ flag = FTW_D;
+ else
+ {
+ if (errno != EACCES)
+ return -1;
+ flag = FTW_DNR;
+ }
+ }
+ else
+ flag = FTW_F;
+
+ retval = (*func) (dir, &s, flag);
+
+ if (flag == FTW_D)
+ {
+ if (retval == 0)
+ retval = ftw_dir (dirs, newlev, descriptors, dir,
+ entry->d_namlen + len + 1, func);
+ if (dirs[newlev] != NULL)
+ {
+ int save;
+
+ save = errno;
+ closedir (dirs[newlev]);
+ errno = save;
+ dirs[newlev] = NULL;
+ }
+ }
+
+ if (retval != 0)
+ return retval;
+
+ if (dirs[level] == NULL)
+ {
+ int skip;
+
+ dir[len] = '\0';
+ dirs[level] = opendir (dir);
+ if (dirs[level] == NULL)
+ return -1;
+ skip = got;
+ while (skip-- != 0)
+ {
+ errno = 0;
+ if (readdir (dirs[level]) == NULL)
+ return errno == 0 ? 0 : -1;
+ }
+ }
+
+ errno = 0;
+ }
+
+ return errno == 0 ? 0 : -1;
+}
+
+/* Call a function on every element in a directory tree. */
+
+int
+DEFUN(ftw, (dir, func, descriptors),
+ CONST char *dir AND
+ int EXFUN((*func), (CONST char *file, struct stat *status,
+ int flag)) AND
+ int descriptors)
+{
+ DIR **dirs;
+ size_t len;
+ char buf[PATH_MAX + 1];
+ struct stat s;
+ int flag, retval;
+ int i;
+
+ if (descriptors <= 0)
+ descriptors = 1;
+
+ dirs = (DIR **) __alloca (descriptors * sizeof (DIR *));
+ i = descriptors;
+ while (i-- > 0)
+ dirs[i] = NULL;
+
+ if (stat (dir, &s) < 0)
+ {
+ if (errno != EACCES && errno != ENOENT)
+ return -1;
+ flag = FTW_NS;
+ }
+ else if (S_ISDIR (s.st_mode))
+ {
+ dirs[0] = opendir (dir);
+ if (dirs[0] != NULL)
+ flag = FTW_D;
+ else
+ {
+ if (errno != EACCES)
+ return -1;
+ flag = FTW_DNR;
+ }
+ }
+ else
+ flag = FTW_F;
+
+ len = strlen (dir);
+ memcpy ((PTR) buf, (PTR) dir, len + 1);
+
+ retval = (*func) (buf, &s, flag);
+
+ if (flag == FTW_D)
+ {
+ if (retval == 0)
+ retval = ftw_dir (dirs, 0, descriptors, buf, len, func);
+ if (dirs[0] != NULL)
+ {
+ int save;
+
+ save = errno;
+ closedir (dirs[0]);
+ errno = save;
+ }
+ }
+
+ return retval;
+}
diff --git a/io/ftw.h b/io/ftw.h
new file mode 100644
index 0000000000..c7c3a88305
--- /dev/null
+++ b/io/ftw.h
@@ -0,0 +1,44 @@
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ian Lance Taylor (ian@airs.com).
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/*
+ * SVID ftw.h
+ */
+
+#ifndef _FTW_H
+
+#define _FTW_H 1
+#include <features.h>
+
+#include <statbuf.h>
+
+/* The FLAG argument to the user function passed to ftw. */
+#define FTW_F 0 /* Regular file. */
+#define FTW_D 1 /* Directory. */
+#define FTW_DNR 2 /* Unreadable directory. */
+#define FTW_NS 3 /* Unstatable file. */
+
+/* Call a function on every element in a directory tree. */
+extern int ftw __P ((__const char *__dir,
+ int (*__func) (__const char *__file,
+ struct stat *__status,
+ int __flag),
+ int __descriptors));
+
+#endif /* ftw.h */
diff --git a/io/getdirname.c b/io/getdirname.c
new file mode 100644
index 0000000000..733745b584
--- /dev/null
+++ b/io/getdirname.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Return a malloc'd string containing the current directory name.
+ If the environment variable `PWD' is set, and its value is correct,
+ that value is used. */
+
+char *
+DEFUN_VOID(get_current_dir_name)
+{
+ char *pwd;
+ struct stat dotstat, pwdstat;
+
+ pwd = getenv ("PWD");
+ if (pwd != NULL &&
+ stat (".", &dotstat) == 0 &&
+ stat (pwd, &pwdstat) == 0 &&
+ pwdstat.st_dev == dotstat.st_dev &&
+ pwdstat.st_ino == dotstat.st_ino)
+ /* The PWD value is correct. Use it. */
+ return strdup (pwd);
+
+ return getcwd ((char *) NULL, 0);
+}
diff --git a/io/getwd.c b/io/getwd.c
new file mode 100644
index 0000000000..fdda1cac22
--- /dev/null
+++ b/io/getwd.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Put the absolute pathname of the current working direction in BUF.
+ If successful, return BUF. If not, put an error message in
+ BUF and return NULL. BUF should be at least PATH_MAX bytes long. */
+char *
+DEFUN(getwd, (buf), char *buf)
+{
+ if (buf == NULL)
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+
+#ifndef PATH_MAX
+#define PATH_MAX 1024 /* Arbitrary; this function is unreliable. */
+#endif
+ if (getcwd (buf, PATH_MAX) == NULL)
+ {
+ (void) strncpy (buf, strerror (errno), PATH_MAX);
+ return NULL;
+ }
+
+ return buf;
+}
diff --git a/io/lockf.c b/io/lockf.c
new file mode 100644
index 0000000000..91664197ae
--- /dev/null
+++ b/io/lockf.c
@@ -0,0 +1,68 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+/* lockf is a simplified interface to fcntl's locking facilities. */
+
+int
+lockf (int fd, int cmd, off_t len)
+{
+ struct flock fl;
+
+ switch (cmd)
+ {
+ case F_TEST:
+ /* Test the lock: return 0 if FD is unlocked or locked by this process;
+ return -1, set errno to EACCES, if another process holds the lock. */
+ if (fcntl (fd, F_GETLK, &fl) < 0)
+ return -1;
+ if (fl.l_type == F_UNLCK || fl.l_pid == getpid ())
+ return 0;
+ errno = EACCES;
+ return -1;
+
+ case F_ULOCK:
+ fl.l_type = F_UNLCK;
+ cmd = F_SETLK;
+ break;
+ case F_LOCK:
+ fl.l_type = F_WRLCK;
+ cmd = F_SETLKW;
+ break;
+ case F_TLOCK:
+ fl.l_type = F_WRLCK;
+ cmd = F_SETLK;
+ break;
+
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* lockf is always relative to the current file position. */
+ fl.l_whence = SEEK_CUR;
+ fl.l_start = 0;
+
+ fl.l_len = len;
+
+ return fcntl (fd, cmd, &fl);
+}
diff --git a/io/poll.h b/io/poll.h
new file mode 100644
index 0000000000..06fb41ab89
--- /dev/null
+++ b/io/poll.h
@@ -0,0 +1 @@
+#include <sys/poll.h>
diff --git a/io/pwd.c b/io/pwd.c
new file mode 100644
index 0000000000..7ff1948c1d
--- /dev/null
+++ b/io/pwd.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+DEFUN_VOID(main)
+{
+ char *dir = getcwd((char *) NULL, 0);
+
+ if (dir == NULL)
+ perror("getcwd");
+ else
+ {
+ puts(dir);
+ free(dir);
+ }
+
+ exit(dir == NULL ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/io/sys/fcntl.h b/io/sys/fcntl.h
new file mode 100644
index 0000000000..cd304557e7
--- /dev/null
+++ b/io/sys/fcntl.h
@@ -0,0 +1 @@
+#include <fcntl.h>
diff --git a/io/sys/poll.h b/io/sys/poll.h
new file mode 100644
index 0000000000..48b9afac9e
--- /dev/null
+++ b/io/sys/poll.h
@@ -0,0 +1,65 @@
+/* Compatibility definitions for System V `poll' interface.
+Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#ifndef _SYS_POLL_H
+#define _SYS_POLL_H
+
+#include <sys/cdefs.h>
+
+/* Data structure describing a polling request. */
+struct pollfd
+ {
+ int fd; /* File descriptor to poll. */
+ short int events; /* Types of events poller cares about. */
+ short int revents; /* Types of events that actually occurred. */
+ };
+
+/* Event types that can be polled for. These bits may be set in `events'
+ to indicate the interesting event types; they will appear in `revents'
+ to indicate the status of the file descriptor. */
+#define POLLIN 01 /* There is data to read. */
+#define POLLPRI 02 /* There is urgent data to read. */
+#define POLLOUT 04 /* Writing now will not block. */
+
+/* Event types always implicitly polled for. These bits need not be set in
+ `events', but they will appear in `revents' to indicate the status of
+ the file descriptor. */
+#define POLLERR 010 /* Error condition. */
+#define POLLHUP 020 /* Hung up. */
+#define POLLNVAL 040 /* Invalid polling request. */
+
+/* Canonical number of polling requests to read in at a time in poll. */
+#define NPOLLFILE 30
+
+
+__BEGIN_DECLS
+
+/* Poll the file descriptors described by the NFDS structures starting at
+ FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+ an event to occur; if TIMEOUT is -1, block until an event occurs.
+ Returns the number of file descriptors with events, zero if timed out,
+ or -1 for errors. */
+
+extern int poll __P ((struct pollfd *__fds, unsigned long int __nfds,
+ int __timeout));
+
+__END_DECLS
+
+#endif /* sys/poll.h */
+
diff --git a/io/sys/stat.h b/io/sys/stat.h
new file mode 100644
index 0000000000..b5b9e363d7
--- /dev/null
+++ b/io/sys/stat.h
@@ -0,0 +1,168 @@
+/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/*
+ * POSIX Standard: 5.6 File Characteristics <sys/stat.h>
+ */
+
+#ifndef _SYS_STAT_H
+
+#define _SYS_STAT_H 1
+#include <features.h>
+
+#include <gnu/types.h> /* For __mode_t and __dev_t. */
+
+__BEGIN_DECLS
+
+#include <statbuf.h>
+
+#if defined(__USE_BSD) || defined(__USE_MISC)
+#define S_IFMT __S_IFMT
+#define S_IFDIR __S_IFDIR
+#define S_IFCHR __S_IFCHR
+#define S_IFBLK __S_IFBLK
+#define S_IFREG __S_IFREG
+#ifdef __S_IFLNK
+#define S_IFLNK __S_IFLNK
+#endif
+#ifdef __S_IFSOCK
+#define S_IFSOCK __S_IFSOCK
+#endif
+#ifdef __S_IFIFO
+#define S_IFIFO __S_IFIFO
+#endif
+#endif
+
+/* Test macros for file types. */
+
+#define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask))
+
+#define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR)
+#define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR)
+#define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK)
+#define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG)
+#ifdef __S_IFIFO
+#define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO)
+#endif
+
+#ifdef __USE_GNU
+#ifdef __S_IFLNK
+#define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK)
+#endif
+#ifdef __S_IFSOCK
+#define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
+#endif
+#endif
+
+
+/* Protection bits. */
+
+#define S_ISUID __S_ISUID /* Set user ID on execution. */
+#define S_ISGID __S_ISGID /* Set group ID on execution. */
+
+#if defined(__USE_BSD) || defined(__USE_MISC)
+/* Save swapped text after use (sticky bit). This is pretty well obsolete. */
+#define S_ISVTX __S_ISVTX
+#endif
+
+#define S_IRUSR __S_IREAD /* Read by owner. */
+#define S_IWUSR __S_IWRITE /* Write by owner. */
+#define S_IXUSR __S_IEXEC /* Execute by owner. */
+/* Read, write, and execute by owner. */
+#define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC)
+
+#if defined(__USE_MISC) && defined(__USE_BSD)
+#define S_IREAD S_IRUSR
+#define S_IWRITE S_IWUSR
+#define S_IEXEC S_IXUSR
+#endif
+
+#define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
+#define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
+#define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
+/* Read, write, and execute by group. */
+#define S_IRWXG (S_IRWXU >> 3)
+
+#define S_IROTH (S_IRGRP >> 3) /* Read by others. */
+#define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
+#define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
+/* Read, write, and execute by others. */
+#define S_IRWXO (S_IRWXG >> 3)
+
+
+/* Get file attributes for FILE and put them in BUF. */
+extern int __stat __P ((__const char *__file, struct stat *__buf));
+extern int stat __P ((__const char *__file, struct stat *__buf));
+
+/* Get file attributes for the file, device, pipe, or socket
+ that file descriptor FD is open on and put them in BUF. */
+extern int __fstat __P ((int __fd, struct stat *__buf));
+extern int fstat __P ((int __fd, struct stat *__buf));
+
+/* Get file attributes about FILE and put them in BUF.
+ If FILE is a symbolic link, do not follow it. */
+extern int __lstat __P ((__const char *__file, struct stat *__buf));
+#ifdef __USE_BSD
+extern int lstat __P ((__const char *__file, struct stat *__buf));
+#endif
+
+/* Set file access permissions for FILE to MODE.
+ This takes an `int' MODE argument because that
+ is what `mode_t's get widened to. */
+extern int __chmod __P ((__const char *__file, __mode_t __mode));
+extern int chmod __P ((__const char *__file, __mode_t __mode));
+
+/* Set file access permissions of the file FD is open on to MODE. */
+extern int __fchmod __P ((int __fd, __mode_t __mode));
+#ifdef __USE_BSD
+extern int fchmod __P ((int __fd, __mode_t __mode));
+#endif
+
+
+/* Set the file creation mask of the current process to MASK,
+ and return the old creation mask. */
+extern __mode_t __umask __P ((__mode_t __mask));
+extern __mode_t umask __P ((__mode_t __mask));
+
+#ifdef __USE_GNU
+/* Get the current `umask' value without changing it.
+ This function is only available under the GNU Hurd. */
+extern __mode_t getumask __P ((void));
+#endif
+
+/* Create a new directory named PATH, with permission bits MODE. */
+extern int __mkdir __P ((__const char *__path, __mode_t __mode));
+extern int mkdir __P ((__const char *__path, __mode_t __mode));
+
+/* Create a device file named PATH, with permission and special bits MODE
+ and device number DEV (which can be constructed from major and minor
+ device numbers with the `makedev' macro above). */
+extern int __mknod __P ((__const char *__path,
+ __mode_t __mode, __dev_t __dev));
+#if defined(__USE_MISC) || defined(__USE_BSD)
+extern int mknod __P ((__const char *__path,
+ __mode_t __mode, __dev_t __dev));
+#endif
+
+
+/* Create a new FIFO named PATH, with permission bits MODE. */
+extern int mkfifo __P ((__const char *__path, __mode_t __mode));
+
+__END_DECLS
+
+#endif /* sys/stat.h */
diff --git a/io/test-utime.c b/io/test-utime.c
new file mode 100644
index 0000000000..565e010815
--- /dev/null
+++ b/io/test-utime.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <utime.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int
+main ()
+{
+ char file[L_tmpnam];
+ struct utimbuf ut;
+ struct stat st;
+ int fd;
+
+ if (tmpnam (file) == 0)
+ {
+ perror ("tmpnam");
+ exit (1);
+ }
+
+ fd = creat (file, 0666);
+ if (fd < 0)
+ {
+ perror ("creat");
+ exit (1);
+ }
+ close (fd);
+
+ ut.actime = 500000000;
+ ut.modtime = 500000001;
+ if (utime (file, &ut))
+ {
+ perror ("utime");
+ remove (file);
+ exit (1);
+ }
+
+ if (stat (file, &st))
+ {
+ perror ("stat");
+ remove (file);
+ exit (1);
+ }
+
+ remove (file);
+
+ if (st.st_mtime != ut.modtime)
+ {
+ printf ("modtime %ld != %ld\n", st.st_mtime, ut.modtime);
+ exit (1);
+ }
+
+ if (st.st_atime != ut.actime)
+ {
+ printf ("actime %ld != %ld\n", st.st_atime, ut.actime);
+ exit (1);
+ }
+
+ puts ("Test succeeded.");
+ exit (0);
+}
diff --git a/io/utime.h b/io/utime.h
new file mode 100644
index 0000000000..6985a58859
--- /dev/null
+++ b/io/utime.h
@@ -0,0 +1,49 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/*
+ * POSIX Standard: 5.6.6 Set File Access and Modification Times <utime.h>
+ */
+
+#ifndef _UTIME_H
+
+#define _UTIME_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+#define __need_NULL
+#include <stddef.h>
+
+#include <gnu/types.h>
+
+/* Structure describing file times. */
+struct utimbuf
+ {
+ __time_t actime; /* Access time. */
+ __time_t modtime; /* Modification time. */
+ };
+
+/* Set the access and modification times of FILE to those given in TIMES.
+ If TIMES is NULL, set them to the current time. */
+extern int utime __P ((__const char *__file,
+ __const struct utimbuf *__times));
+
+__END_DECLS
+
+#endif /* utime.h */