123 lines
2.0 KiB
C
123 lines
2.0 KiB
C
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/* @(#)fchdir.c 1.2 11/10/21 Copyright 2011 J. Schilling */
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/*
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* Emulate the behavior of fchdir(fd)
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*
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* Copyright (c) 2011 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/unistd.h>
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#include <schily/types.h>
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#include <schily/fcntl.h>
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#include <schily/maxpath.h>
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#include <schily/errno.h>
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#include <schily/string.h>
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#include <schily/standard.h>
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#include <schily/schily.h>
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#include "at-defs.h"
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#ifndef HAVE_FCHDIR
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#define DN_SIZE 256
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LOCAL char *dnames[DN_SIZE];
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EXPORT int
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fchdir(fd)
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int fd;
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{
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if (fd < 0) {
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seterrno(EBADF);
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return (-1);
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}
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if (fd >= DN_SIZE) {
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seterrno(ENOTDIR);
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return (-1);
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}
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if (dnames[fd] == NULL) {
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seterrno(ENOTDIR);
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return (-1);
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}
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return (lxchdir(dnames[fd]));
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}
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EXPORT int
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fdsetname(fd, name)
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int fd;
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const char *name;
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{
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if (fd < 0) {
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seterrno(EBADF);
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return (-1);
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}
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if (fd >= DN_SIZE)
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return (-1);
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{
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char buf[max(8192, PATH_MAX+1)];
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if (abspath(name, buf, sizeof (buf)) == NULL) {
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return (-1);
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}
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if (dnames[fd] != NULL)
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free(dnames[fd]);
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dnames[fd] = strdup(buf);
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if (dnames[fd] == NULL)
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return (-1);
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}
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return (0);
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}
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EXPORT int
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fdclosename(fd)
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int fd;
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{
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if (fd < 0) {
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seterrno(EBADF);
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return (-1);
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}
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if (fd >= DN_SIZE)
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return (-1);
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if (dnames[fd] != NULL)
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free(dnames[fd]);
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dnames[fd] = NULL;
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return (0);
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}
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#else /* HAVE_FCHDIR */
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#undef fdsetname
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#undef fdclosename
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extern int fdsetname __PR((int fd, const char *name));
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extern int fdclosename __PR((int fd));
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/* ARGSUSED */
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EXPORT int
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fdsetname(fd, name)
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int fd;
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const char *name;
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{
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return (0);
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}
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/* ARGSUSED */
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EXPORT int
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fdclosename(fd)
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int fd;
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{
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return (0);
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}
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#endif /* HAVE_FCHDIR */
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