Clean up deleted files.
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37ed7877b2
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bin/sh/dirent.c
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bin/sh/dirent.c
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/*static char sccsid[] = "from: @(#)dirent.c 5.1 (Berkeley) 3/7/91";*/
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static char rcsid[] = "$Id: dirent.c,v 1.4 1993/08/01 18:58:21 mycroft Exp $";
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#endif /* not lint */
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#include "shell.h" /* definitions for pointer, NULL, DIRENT, and BSD */
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#if ! DIRENT
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <dirent.h>
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#ifndef S_ISDIR /* macro to test for directory file */
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#endif
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#ifdef BSD
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#ifdef __STDC__
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int stat(char *, struct stat *);
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#else
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int stat();
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#endif
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/*
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* The BSD opendir routine doesn't check that what is being opened is a
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* directory, so we have to include the check in a wrapper routine.
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*/
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#undef opendir
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DIR *
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myopendir(dirname)
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char *dirname; /* name of directory */
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{
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struct stat statb;
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if (stat(dirname, &statb) != 0 || ! S_ISDIR(statb.st_mode)) {
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errno = ENOTDIR;
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return NULL; /* not a directory */
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}
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return opendir(dirname);
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}
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#else /* not BSD */
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/*
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* Dirent routines for old style file systems.
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*/
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#ifdef __STDC__
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pointer malloc(unsigned);
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void free(pointer);
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int open(char *, int, ...);
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int close(int);
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int fstat(int, struct stat *);
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#else
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pointer malloc();
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void free();
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int open();
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int close();
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int fstat();
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#endif
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DIR *
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opendir(dirname)
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char *dirname; /* name of directory */
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{
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register DIR *dirp; /* -> malloc'ed storage */
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register int fd; /* file descriptor for read */
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struct stat statb; /* result of fstat() */
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#ifdef O_NDELAY
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fd = open(dirname, O_RDONLY|O_NDELAY);
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#else
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fd = open(dirname, O_RDONLY);
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#endif
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if (fd < 0)
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return NULL; /* errno set by open() */
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if (fstat(fd, &statb) != 0 || !S_ISDIR(statb.st_mode)) {
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(void)close(fd);
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errno = ENOTDIR;
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return NULL; /* not a directory */
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}
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if ((dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
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(void)close(fd);
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errno = ENOMEM;
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return NULL; /* not enough memory */
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}
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dirp->dd_fd = fd;
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dirp->dd_nleft = 0; /* refill needed */
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return dirp;
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}
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int
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closedir(dirp)
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register DIR *dirp; /* stream from opendir() */
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{
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register int fd;
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if (dirp == NULL) {
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errno = EFAULT;
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return -1; /* invalid pointer */
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}
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fd = dirp->dd_fd;
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free((pointer)dirp);
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return close(fd);
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}
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struct dirent *
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readdir(dirp)
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register DIR *dirp; /* stream from opendir() */
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{
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register struct direct *dp;
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register char *p, *q;
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register int i;
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do {
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if ((dirp->dd_nleft -= sizeof (struct direct)) < 0) {
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if ((i = read(dirp->dd_fd,
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(char *)dirp->dd_buf,
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DIRBUFENT*sizeof(struct direct))) <= 0) {
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if (i == 0)
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errno = 0; /* unnecessary */
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return NULL; /* EOF or error */
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}
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dirp->dd_loc = dirp->dd_buf;
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dirp->dd_nleft = i - sizeof (struct direct);
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}
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dp = dirp->dd_loc++;
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} while (dp->d_ino == 0);
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dirp->dd_entry.d_ino = dp->d_ino;
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/* now copy the name, nul terminating it */
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p = dp->d_name;
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q = dirp->dd_entry.d_name;
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i = DIRSIZ;
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while (--i >= 0 && *p != '\0')
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*q++ = *p++;
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*q = '\0';
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return &dirp->dd_entry;
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}
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#endif /* BSD */
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#endif /* DIRENT */
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