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-rw-r--r--lib/libc/gen/getcwd.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/lib/libc/gen/getcwd.c b/lib/libc/gen/getcwd.c
deleted file mode 100644
index c886dde..0000000
--- a/lib/libc/gen/getcwd.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * Copyright (c) 1989, 1991, 1993, 1995
- * 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.
- * 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[] = "@(#)getcwd.c 8.5 (Berkeley) 2/7/95";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/stat.h>
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "un-namespace.h"
-
-#define ISDOT(dp) \
- (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
- (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
-
-extern int __getcwd(char *, size_t);
-
-char *
-getcwd(pt, size)
- char *pt;
- size_t size;
-{
- struct dirent *dp;
- DIR *dir = NULL;
- dev_t dev;
- ino_t ino;
- int first;
- char *bpt;
- struct stat s;
- dev_t root_dev;
- ino_t root_ino;
- size_t ptsize;
- int save_errno;
- char *ept, c;
- int fd;
-
- /*
- * If no buffer specified by the user, allocate one as necessary.
- * If a buffer is specified, the size has to be non-zero. The path
- * is built from the end of the buffer backwards.
- */
- if (pt) {
- ptsize = 0;
- if (!size) {
- errno = EINVAL;
- return (NULL);
- }
- if (size == 1) {
- errno = ERANGE;
- return (NULL);
- }
- ept = pt + size;
- } else {
- if ((pt = malloc(ptsize = PATH_MAX)) == NULL)
- return (NULL);
- ept = pt + ptsize;
- }
- if (__getcwd(pt, ept - pt) == 0) {
- if (*pt != '/') {
- bpt = pt;
- ept = pt + strlen(pt) - 1;
- while (bpt < ept) {
- c = *bpt;
- *bpt++ = *ept;
- *ept-- = c;
- }
- }
- return (pt);
- }
- bpt = ept - 1;
- *bpt = '\0';
-
- /* Save root values, so know when to stop. */
- if (stat("/", &s))
- goto err;
- root_dev = s.st_dev;
- root_ino = s.st_ino;
-
- errno = 0; /* XXX readdir has no error return. */
-
- for (first = 1;; first = 0) {
- /* Stat the current level. */
- if (dir != NULL ? _fstat(dirfd(dir), &s) : lstat(".", &s))
- goto err;
-
- /* Save current node values. */
- ino = s.st_ino;
- dev = s.st_dev;
-
- /* Check for reaching root. */
- if (root_dev == dev && root_ino == ino) {
- *--bpt = '/';
- /*
- * It's unclear that it's a requirement to copy the
- * path to the beginning of the buffer, but it's always
- * been that way and stuff would probably break.
- */
- bcopy(bpt, pt, ept - bpt);
- if (dir)
- (void) closedir(dir);
- return (pt);
- }
-
- /* Open and stat parent directory. */
- fd = _openat(dir != NULL ? dirfd(dir) : AT_FDCWD,
- "..", O_RDONLY);
- if (fd == -1)
- goto err;
- if (dir)
- (void) closedir(dir);
- if (!(dir = fdopendir(fd)) || _fstat(dirfd(dir), &s)) {
- _close(fd);
- goto err;
- }
-
- /*
- * If it's a mount point, have to stat each element because
- * the inode number in the directory is for the entry in the
- * parent directory, not the inode number of the mounted file.
- */
- save_errno = 0;
- if (s.st_dev == dev) {
- for (;;) {
- if (!(dp = readdir(dir)))
- goto notfound;
- if (dp->d_fileno == ino)
- break;
- }
- } else
- for (;;) {
- if (!(dp = readdir(dir)))
- goto notfound;
- if (ISDOT(dp))
- continue;
-
- /* Save the first error for later. */
- if (fstatat(dirfd(dir), dp->d_name, &s,
- AT_SYMLINK_NOFOLLOW)) {
- if (!save_errno)
- save_errno = errno;
- errno = 0;
- continue;
- }
- if (s.st_dev == dev && s.st_ino == ino)
- break;
- }
-
- /*
- * Check for length of the current name, preceding slash,
- * leading slash.
- */
- while (bpt - pt < dp->d_namlen + (first ? 1 : 2)) {
- size_t len, off;
-
- if (!ptsize) {
- errno = ERANGE;
- goto err;
- }
- off = bpt - pt;
- len = ept - bpt;
- if ((pt = reallocf(pt, ptsize *= 2)) == NULL)
- goto err;
- bpt = pt + off;
- ept = pt + ptsize;
- bcopy(bpt, ept - len, len);
- bpt = ept - len;
- }
- if (!first)
- *--bpt = '/';
- bpt -= dp->d_namlen;
- bcopy(dp->d_name, bpt, dp->d_namlen);
- }
-
-notfound:
- /*
- * If readdir set errno, use it, not any saved error; otherwise,
- * didn't find the current directory in its parent directory, set
- * errno to ENOENT.
- */
- if (!errno)
- errno = save_errno ? save_errno : ENOENT;
- /* FALLTHROUGH */
-err:
- save_errno = errno;
-
- if (ptsize)
- free(pt);
- if (dir)
- (void) closedir(dir);
-
- errno = save_errno;
- return (NULL);
-}
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