+++ /dev/null
-/** @file\r
- Open a directory.\r
-\r
- Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
- Copyright (c) 1983, 1993\r
- The Regents of the University of California. All rights reserved.\r
-\r
- Redistribution and use in source and binary forms, with or without\r
- modification, are permitted provided that the following conditions\r
- are met:\r
- 1. Redistributions of source code must retain the above copyright\r
- notice, this list of conditions and the following disclaimer.\r
- 2. Redistributions in binary form must reproduce the above copyright\r
- notice, this list of conditions and the following disclaimer in the\r
- documentation and/or other materials provided with the distribution.\r
- 3. Neither the name of the University nor the names of its contributors\r
- may be used to endorse or promote products derived from this software\r
- without specific prior written permission.\r
-\r
- THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
- SUCH DAMAGE.\r
-\r
- NetBSD: opendir.c,v 1.33 2008/01/10 09:49:04 elad Exp\r
- opendir.c 8.7 (Berkeley) 12/10/94\r
-**/\r
-#include <sys/cdefs.h>\r
-\r
-#include <namespace.h>\r
-#include <reentrant.h>\r
-#include <extern.h>\r
-#include <sys/param.h>\r
-//#include <sys/mount.h>\r
-#include <sys/stat.h>\r
-\r
-#include <assert.h>\r
-#include <dirent.h>\r
-#include <errno.h>\r
-#include <fcntl.h>\r
-#include <stdlib.h>\r
-#include <string.h>\r
-#include <unistd.h>\r
-\r
-#define MAXITERATIONS 100\r
-\r
-/*\r
- * Open a directory.\r
- */\r
-DIR *\r
-opendir(const char *name)\r
-{\r
- _DIAGASSERT(name != NULL);\r
-\r
- return (__opendir2(name, DTF_HIDEW|DTF_NODUP));\r
-}\r
-\r
-DIR *\r
-__opendir2(const char *name, int flags)\r
-{\r
- DIR *dirp = NULL;\r
- int fd;\r
- int serrno;\r
- struct stat sb;\r
- int incr;\r
-\r
- _DIAGASSERT(name != NULL);\r
-\r
- if ((fd = open(name, O_RDONLY | O_NONBLOCK, 0)) == -1 ||\r
- fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)\r
- goto error;\r
- if (fstat(fd, &sb) || !S_ISDIR(sb.st_mode)) {\r
- errno = ENOTDIR;\r
- goto error;\r
- }\r
- if ((dirp = (DIR *)malloc(sizeof(DIR))) == NULL)\r
- goto error;\r
- dirp->dd_buf = NULL;\r
-\r
- /*\r
- * If the machine's page size is an exact multiple of DIRBLKSIZ,\r
- * use a buffer that is cluster boundary aligned.\r
- * Hopefully this can be a big win someday by allowing page trades\r
- * to user space to be done by getdirentries()\r
- */\r
- incr = DIRBLKSIZ;\r
-\r
- dirp->dd_len = incr;\r
- dirp->dd_buf = malloc((size_t)dirp->dd_len);\r
- if (dirp->dd_buf == NULL)\r
- goto error;\r
- dirp->dd_seek = 0;\r
- flags &= ~DTF_REWIND;\r
-\r
- dirp->dd_loc = 0;\r
- dirp->dd_fd = fd;\r
- dirp->dd_flags = flags;\r
-\r
- /*\r
- * Set up seek point for rewinddir.\r
- */\r
-#ifdef _REENTRANT\r
- if (__isthreaded) {\r
- if ((dirp->dd_lock = malloc(sizeof(mutex_t))) == NULL)\r
- goto error;\r
- mutex_init((mutex_t *)dirp->dd_lock, NULL);\r
- }\r
-#endif\r
- dirp->dd_internal = NULL;\r
- return (dirp);\r
-error:\r
- serrno = errno;\r
- if (dirp && dirp->dd_buf)\r
- free(dirp->dd_buf);\r
- if (dirp)\r
- free(dirp);\r
- if (fd != -1)\r
- (void)close(fd);\r
- errno = serrno;\r
- return NULL;\r
-}\r
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