author | Jon Tibble <meths@btinternet.com> |
Thu, 09 Dec 2010 22:32:39 +0100 | |
changeset 13255 | 4afa820d78b9 |
parent 6812 | febeba71273d |
permissions | -rw-r--r-- |
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/* |
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* CDDL HEADER START |
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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 (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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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 at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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/* |
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
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* Use is subject to license terms. |
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*/ |
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||
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#pragma ident "%Z%%M% %I% %E% SMI" |
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||
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/* |
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* fdopendir, dirfd -- C library extension routines |
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* |
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* We use lmalloc()/lfree() rather than malloc()/free() in |
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* order to allow opendir()/readdir()/closedir() to be called |
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* while holding internal libc locks. |
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*/ |
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#pragma weak _fdopendir = fdopendir |
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#include "lint.h" |
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#include <mtlib.h> |
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#include <dirent.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <errno.h> |
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#include "libc.h" |
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DIR * |
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fdopendir(int fd) |
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{ |
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private_DIR *pdirp = lmalloc(sizeof (*pdirp)); |
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DIR *dirp = (DIR *)pdirp; |
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void *buf = lmalloc(DIRBUF); |
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int error = 0; |
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struct stat64 sbuf; |
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if (pdirp == NULL || buf == NULL) |
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goto fail; |
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/* |
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* POSIX mandated behavior |
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* close on exec if using file descriptor |
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*/ |
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if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) |
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goto fail; |
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if (fstat64(fd, &sbuf) < 0) |
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goto fail; |
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if ((sbuf.st_mode & S_IFMT) != S_IFDIR) { |
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error = ENOTDIR; |
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goto fail; |
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} |
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dirp->dd_buf = buf; |
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dirp->dd_fd = fd; |
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dirp->dd_loc = 0; |
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dirp->dd_size = 0; |
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(void) mutex_init(&pdirp->dd_lock, USYNC_THREAD, NULL); |
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return (dirp); |
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fail: |
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if (pdirp != NULL) |
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lfree(pdirp, sizeof (*pdirp)); |
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if (buf != NULL) |
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lfree(buf, DIRBUF); |
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if (error) |
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errno = error; |
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return (NULL); |
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} |
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int |
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dirfd(DIR *dirp) |
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{ |
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return (dirp->dd_fd); |
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} |