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100 lines
2 KiB
C
100 lines
2 KiB
C
/* $Id: opendir.c,v 1.4 2002/10/29 04:45:28 rex Exp $
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*/
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS POSIX+ Subsystem
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* FILE: subsys/psx/lib/psxdll/dirent/opendir.c
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* PURPOSE: Open a directory
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* PROGRAMMER: KJK::Hyperion <noog@libero.it>
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* UPDATE HISTORY:
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* 27/01/2002: Created
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* 13/02/2002: KJK::Hyperion: modified to use file descriptors
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*/
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#include <sys/types.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <wchar.h>
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#include <errno.h>
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#include <psx/debug.h>
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#include <psx/stdlib.h>
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#include <psx/dirent.h>
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#include <psx/safeobj.h>
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DIR *opendir(const char *dirname)
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{
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ANSI_STRING strDirName;
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UNICODE_STRING wstrDirName;
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DIR *pdData;
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RtlInitAnsiString(&strDirName, (PCSZ)dirname);
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RtlAnsiStringToUnicodeString(&wstrDirName, &strDirName, TRUE);
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pdData = (DIR *)_Wopendir(wstrDirName.Buffer);
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RtlFreeUnicodeString(&wstrDirName);
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return (pdData);
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}
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DIR *_Wopendir(const wchar_t *dirname)
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{
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struct __internal_DIR *pidData;
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int nFileNo;
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/* allocate internal object */
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pidData = __malloc(sizeof(*pidData));
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/* allocation failed */
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if(pidData == 0)
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{
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errno = ENOMEM;
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return (0);
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}
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/* open the directory */
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nFileNo = _Wopen(dirname, O_RDONLY | _O_DIRFILE);
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/* failure */
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if(nFileNo < 0)
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{
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__free(pidData);
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return (0);
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}
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/* directory file descriptors must be closed on exec() */
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if(fcntl(nFileNo, F_SETFD, FD_CLOEXEC) == -1)
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WARN
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(
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"couldn't set FD_CLOEXEC flag on file number %u, errno %u",
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nFileNo,
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errno
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);
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/* associate the internal data to the file descriptor */
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if(fcntl(nFileNo, F_SETXP, pidData) == -1)
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WARN
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(
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"couldn't associate the object at 0x%X to the file number %u, errno %u",
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pidData,
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nFileNo,
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errno
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);
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if(fcntl(nFileNo, F_SETXS, sizeof(*pidData)) == -1)
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WARN
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(
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"couldn't set the extra data size of the file number %u, errno %u",
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nFileNo,
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errno
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);
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pidData->signature = __IDIR_MAGIC;
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/* success */
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return ((DIR *)pidData);
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}
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/* EOF */
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