diff options
Diffstat (limited to 'src/VBox/Runtime/r3/posix/dir-posix.cpp')
| -rw-r--r-- | src/VBox/Runtime/r3/posix/dir-posix.cpp | 733 |
1 files changed, 733 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/posix/dir-posix.cpp b/src/VBox/Runtime/r3/posix/dir-posix.cpp new file mode 100644 index 00000000..558085ab --- /dev/null +++ b/src/VBox/Runtime/r3/posix/dir-posix.cpp @@ -0,0 +1,733 @@ +/* $Id: dir-posix.cpp $ */ +/** @file + * IPRT - Directory manipulation, POSIX. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP RTLOGGROUP_DIR +#include <errno.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <dirent.h> +#include <dlfcn.h> +#include <stdio.h> + +#include <iprt/dir.h> +#include "internal/iprt.h" + +#include <iprt/alloca.h> +#include <iprt/asm.h> +#include <iprt/assert.h> +#include <iprt/err.h> +#include <iprt/log.h> +#include <iprt/mem.h> +#include <iprt/param.h> +#include <iprt/path.h> +#include <iprt/string.h> +#include "internal/dir.h" +#include "internal/fs.h" +#include "internal/path.h" + +#if !defined(RT_OS_SOLARIS) && !defined(RT_OS_HAIKU) +# define HAVE_DIRENT_D_TYPE 1 +#endif + + +RTDECL(bool) RTDirExists(const char *pszPath) +{ + bool fRc = false; + char const *pszNativePath; + int rc = rtPathToNative(&pszNativePath, pszPath, NULL); + if (RT_SUCCESS(rc)) + { + struct stat s; + fRc = !stat(pszNativePath, &s) + && S_ISDIR(s.st_mode); + + rtPathFreeNative(pszNativePath, pszPath); + } + + LogFlow(("RTDirExists(%p={%s}): returns %RTbool\n", pszPath, pszPath, fRc)); + return fRc; +} + + +RTDECL(int) RTDirCreate(const char *pszPath, RTFMODE fMode, uint32_t fCreate) +{ + RT_NOREF_PV(fCreate); + + int rc; + fMode = rtFsModeNormalize(fMode, pszPath, 0, RTFS_TYPE_DIRECTORY); + if (rtFsModeIsValidPermissions(fMode)) + { + char const *pszNativePath; + rc = rtPathToNative(&pszNativePath, pszPath, NULL); + if (RT_SUCCESS(rc)) + { + struct stat st; + if (mkdir(pszNativePath, fMode & RTFS_UNIX_MASK) == 0) + { + /* If requested, we try make use the permission bits are set + correctly when asked. For now, we'll just ignore errors here. */ + if (fCreate & RTDIRCREATE_FLAGS_IGNORE_UMASK) + { + if ( stat(pszNativePath, &st) + || (st.st_mode & 07777) != (fMode & 07777) ) + chmod(pszNativePath, fMode & RTFS_UNIX_MASK); + } + rc = VINF_SUCCESS; + } + else + { + rc = errno; + /* + * Solaris mkdir returns ENOSYS on autofs directories, and also + * did this apparently for NFS mount points in some Nevada + * development builds. It also returned EACCES when it should + * have returned EEXIST, which actually is within the POSIX + * spec (not that I like this interpretation, but it seems + * valid). Check ourselves. + */ + if ( rc == ENOSYS + || rc == EACCES) + { + rc = RTErrConvertFromErrno(rc); + if (!stat(pszNativePath, &st)) + rc = VERR_ALREADY_EXISTS; + } + else + rc = RTErrConvertFromErrno(rc); + } + } + + rtPathFreeNative(pszNativePath, pszPath); + } + else + { + AssertMsgFailed(("Invalid file mode! %RTfmode\n", fMode)); + rc = VERR_INVALID_FMODE; + } + LogFlow(("RTDirCreate(%p={%s}, %RTfmode): returns %Rrc\n", pszPath, pszPath, fMode, rc)); + return rc; +} + + +RTDECL(int) RTDirRemove(const char *pszPath) +{ + char const *pszNativePath; + int rc = rtPathToNative(&pszNativePath, pszPath, NULL); + if (RT_SUCCESS(rc)) + { + if (rmdir(pszNativePath)) + { + rc = errno; + if (rc == EEXIST) /* Solaris returns this, the rest have ENOTEMPTY. */ + rc = VERR_DIR_NOT_EMPTY; + else if (rc != ENOTDIR) + rc = RTErrConvertFromErrno(rc); + else + { + /* + * This may be a valid path-not-found or it may be a non-directory in + * the final component. FsPerf want us to distinguish between the two, + * and trailing slash shouldn't matter because it doesn't on windows... + */ + char *pszFree = NULL; + const char *pszStat = pszNativePath; + size_t cch = strlen(pszNativePath); + if (cch > 2 && RTPATH_IS_SLASH(pszNativePath[cch - 1])) + { + pszFree = (char *)RTMemTmpAlloc(cch); + if (pszFree) + { + memcpy(pszFree, pszNativePath, cch); + do + pszFree[--cch] = '\0'; + while (cch > 2 && RTPATH_IS_SLASH(pszFree[cch - 1])); + pszStat = pszFree; + } + } + + struct stat st; + if (!stat(pszStat, &st) && !S_ISDIR(st.st_mode)) + rc = VERR_NOT_A_DIRECTORY; + else + rc = VERR_PATH_NOT_FOUND; + + if (pszFree) + RTMemTmpFree(pszFree); + } + } + + rtPathFreeNative(pszNativePath, pszPath); + } + + LogFlow(("RTDirRemove(%p={%s}): returns %Rrc\n", pszPath, pszPath, rc)); + return rc; +} + + +RTDECL(int) RTDirFlush(const char *pszPath) +{ + /* + * Linux: The fsync() man page hints at this being required for ensuring + * consistency between directory and file in case of a crash. + * + * Solaris: No mentioned is made of directories on the fsync man page. + * While rename+fsync will do what we want on ZFS, the code needs more + * careful studying wrt whether the directory entry of a new file is + * implicitly synced when the file is synced (it's very likely for ZFS). + * + * FreeBSD: The FFS fsync code seems to flush the directory entry as well + * in some cases. Don't know exactly what's up with rename, but from the + * look of things fsync(dir) should work. + */ + int rc; +#ifdef O_DIRECTORY + int fd = open(pszPath, O_RDONLY | O_DIRECTORY, 0); +#else + int fd = open(pszPath, O_RDONLY, 0); +#endif + if (fd >= 0) + { + if (fsync(fd) == 0) + rc = VINF_SUCCESS; + else + { + /* Linux fsync(2) man page documents both errors as an indication + * that the file descriptor can't be flushed (seen EINVAL for usual + * directories on CIFS). BSD (OS X) fsync(2) documents only the + * latter, and Solaris fsync(3C) pretends there is no problem. */ + if (errno == EROFS || errno == EINVAL) + rc = VERR_NOT_SUPPORTED; + else + rc = RTErrConvertFromErrno(errno); + } + close(fd); + } + else + rc = RTErrConvertFromErrno(errno); + return rc; +} + + +size_t rtDirNativeGetStructSize(const char *pszPath) +{ + long cbNameMax = pathconf(pszPath, _PC_NAME_MAX); +# ifdef NAME_MAX + if (cbNameMax < NAME_MAX) /* This is plain paranoia, but it doesn't hurt. */ + cbNameMax = NAME_MAX; +# endif +# ifdef _XOPEN_NAME_MAX + if (cbNameMax < _XOPEN_NAME_MAX) /* Ditto. */ + cbNameMax = _XOPEN_NAME_MAX; +# endif + size_t cbDir = RT_UOFFSETOF_DYN(RTDIRINTERNAL, Data.d_name[cbNameMax + 1]); + if (cbDir < sizeof(RTDIRINTERNAL)) /* Ditto. */ + cbDir = sizeof(RTDIRINTERNAL); + cbDir = RT_ALIGN_Z(cbDir, 8); + + return cbDir; +} + + +int rtDirNativeOpen(PRTDIRINTERNAL pDir, uintptr_t hRelativeDir, void *pvNativeRelative) +{ + NOREF(hRelativeDir); + NOREF(pvNativeRelative); + + /* + * Convert to a native path and try opendir. + */ + char *pszSlash = NULL; + char const *pszNativePath; + int rc; + if ( !(pDir->fFlags & RTDIR_F_NO_FOLLOW) + || pDir->fDirSlash + || pDir->cchPath <= 1) + rc = rtPathToNative(&pszNativePath, pDir->pszPath, NULL); + else + { + pszSlash = (char *)&pDir->pszPath[pDir->cchPath - 1]; + *pszSlash = '\0'; + rc = rtPathToNative(&pszNativePath, pDir->pszPath, NULL); + } + if (RT_SUCCESS(rc)) + { + if ( !(pDir->fFlags & RTDIR_F_NO_FOLLOW) + || pDir->fDirSlash) + pDir->pDir = opendir(pszNativePath); + else + { + /* + * If we can get fdopendir() and have both O_NOFOLLOW and O_DIRECTORY, + * we will use open() to safely open the directory without following + * symlinks in the final component, and then use fdopendir to get a DIR + * from the file descriptor. + * + * If we cannot get that, we will use lstat() + opendir() as a fallback. + * + * We ASSUME that support for the O_NOFOLLOW and O_DIRECTORY flags is + * older than fdopendir(). + */ +#if defined(O_NOFOLLOW) && defined(O_DIRECTORY) + /* Need to resolve fdopendir dynamically. */ + typedef DIR * (*PFNFDOPENDIR)(int); + static PFNFDOPENDIR s_pfnFdOpenDir = NULL; + static bool volatile s_fInitalized = false; + + PFNFDOPENDIR pfnFdOpenDir = s_pfnFdOpenDir; + ASMCompilerBarrier(); + if (s_fInitalized) + { /* likely */ } + else + { + pfnFdOpenDir = (PFNFDOPENDIR)(uintptr_t)dlsym(RTLD_DEFAULT, "fdopendir"); + s_pfnFdOpenDir = pfnFdOpenDir; + ASMAtomicWriteBool(&s_fInitalized, true); + } + + if (pfnFdOpenDir) + { + int fd = open(pszNativePath, O_RDONLY | O_DIRECTORY | O_NOFOLLOW, 0); + if (fd >= 0) + { + pDir->pDir = pfnFdOpenDir(fd); + if (RT_UNLIKELY(!pDir->pDir)) + { + rc = RTErrConvertFromErrno(errno); + close(fd); + } + } + else + { + /* WSL returns ELOOP here, but we take no chances that O_NOFOLLOW + takes precedence over O_DIRECTORY everywhere. */ + int iErr = errno; + if (iErr == ELOOP || iErr == ENOTDIR) + { + struct stat St; + if ( lstat(pszNativePath, &St) == 0 + && S_ISLNK(St.st_mode)) + rc = VERR_IS_A_SYMLINK; + else + rc = RTErrConvertFromErrno(iErr); + } + } + } + else +#endif + { + /* Fallback. This contains a race condition. */ + struct stat St; + if ( lstat(pszNativePath, &St) != 0 + || !S_ISLNK(St.st_mode)) + pDir->pDir = opendir(pszNativePath); + else + rc = VERR_IS_A_SYMLINK; + } + } + if (pDir->pDir) + { + /* + * Init data (allocated as all zeros). + */ + pDir->fDataUnread = false; /* spelling it out */ + } + else if (RT_SUCCESS_NP(rc)) + rc = RTErrConvertFromErrno(errno); + + rtPathFreeNative(pszNativePath, pDir->pszPath); + } + if (pszSlash) + *pszSlash = RTPATH_SLASH; + return rc; +} + + +RTDECL(int) RTDirClose(RTDIR hDir) +{ + PRTDIRINTERNAL pDir = hDir; + + /* + * Validate input. + */ + if (!pDir) + return VERR_INVALID_PARAMETER; + if (pDir->u32Magic != RTDIR_MAGIC) + { + AssertMsgFailed(("Invalid pDir=%p\n", pDir)); + return VERR_INVALID_PARAMETER; + } + + /* + * Close the handle. + */ + int rc = VINF_SUCCESS; + pDir->u32Magic = RTDIR_MAGIC_DEAD; + if (closedir(pDir->pDir)) + { + rc = RTErrConvertFromErrno(errno); + AssertMsgFailed(("closedir(%p) -> errno=%d (%Rrc)\n", pDir->pDir, errno, rc)); + } + + RTMemFree(pDir); + return rc; +} + + +/** + * Ensure that there is unread data in the buffer + * and that there is a converted filename hanging around. + * + * @returns IPRT status code. + * @param pDir the open directory. Fully validated. + */ +static int rtDirReadMore(PRTDIRINTERNAL pDir) +{ + /** @todo try avoid the rematching on buffer overflow errors. */ + for (;;) + { + /* + * Fetch data? + */ + if (!pDir->fDataUnread) + { + struct dirent *pResult = NULL; +#if RT_GNUC_PREREQ(4, 6) +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + int rc = readdir_r(pDir->pDir, &pDir->Data, &pResult); +#if RT_GNUC_PREREQ(4, 6) +# pragma GCC diagnostic pop +#endif + if (rc) + { + rc = RTErrConvertFromErrno(rc); + /** @todo Consider translating ENOENT (The current + * position of the directory stream is invalid) + * differently. */ + AssertMsg(rc == VERR_FILE_NOT_FOUND, ("%Rrc\n", rc)); + return rc; + } + if (!pResult) + return VERR_NO_MORE_FILES; + } + + /* + * Convert the filename to UTF-8. + */ + if (!pDir->pszName) + { + int rc = rtPathFromNative(&pDir->pszName, pDir->Data.d_name, pDir->pszPath); + if (RT_FAILURE(rc)) + { + pDir->pszName = NULL; + return rc; + } + pDir->cchName = strlen(pDir->pszName); + } + if ( !pDir->pfnFilter + || pDir->pfnFilter(pDir, pDir->pszName)) + break; + rtPathFreeIprt(pDir->pszName, pDir->Data.d_name); + pDir->pszName = NULL; + pDir->fDataUnread = false; + } + + pDir->fDataUnread = true; + return VINF_SUCCESS; +} + + +#ifdef HAVE_DIRENT_D_TYPE +/** + * Converts the d_type field to IPRT directory entry type. + * + * @returns IPRT directory entry type. + * @param Unix + */ +static RTDIRENTRYTYPE rtDirType(int iType) +{ + switch (iType) + { + case DT_UNKNOWN: return RTDIRENTRYTYPE_UNKNOWN; + case DT_FIFO: return RTDIRENTRYTYPE_FIFO; + case DT_CHR: return RTDIRENTRYTYPE_DEV_CHAR; + case DT_DIR: return RTDIRENTRYTYPE_DIRECTORY; + case DT_BLK: return RTDIRENTRYTYPE_DEV_BLOCK; + case DT_REG: return RTDIRENTRYTYPE_FILE; + case DT_LNK: return RTDIRENTRYTYPE_SYMLINK; + case DT_SOCK: return RTDIRENTRYTYPE_SOCKET; + case DT_WHT: return RTDIRENTRYTYPE_WHITEOUT; + default: + AssertMsgFailed(("iType=%d\n", iType)); + return RTDIRENTRYTYPE_UNKNOWN; + } +} +#endif /*HAVE_DIRENT_D_TYPE */ + + +RTDECL(int) RTDirRead(RTDIR hDir, PRTDIRENTRY pDirEntry, size_t *pcbDirEntry) +{ + PRTDIRINTERNAL pDir = hDir; + + /* + * Validate and digest input. + */ + if (!rtDirValidHandle(pDir)) + return VERR_INVALID_PARAMETER; + AssertPtrReturn(pDirEntry, VERR_INVALID_POINTER); + + size_t cbDirEntry = sizeof(*pDirEntry); + if (pcbDirEntry) + { + AssertPtrReturn(pcbDirEntry, VERR_INVALID_POINTER); + cbDirEntry = *pcbDirEntry; + AssertMsgReturn(cbDirEntry >= RT_UOFFSETOF(RTDIRENTRY, szName[2]), + ("Invalid *pcbDirEntry=%d (min %zu)\n", *pcbDirEntry, RT_UOFFSETOF(RTDIRENTRYEX, szName[2])), + VERR_INVALID_PARAMETER); + } + + /* + * Fetch more data if necessary and/or convert the name. + */ + int rc = rtDirReadMore(pDir); + if (RT_SUCCESS(rc)) + { + /* + * Check if we've got enough space to return the data. + */ + const char *pszName = pDir->pszName; + const size_t cchName = pDir->cchName; + const size_t cbRequired = RT_UOFFSETOF(RTDIRENTRY, szName[1]) + cchName; + if (pcbDirEntry) + *pcbDirEntry = cbRequired; + if (cbRequired <= cbDirEntry) + { + /* + * Setup the returned data. + */ + pDirEntry->INodeId = pDir->Data.d_ino; /* may need #ifdefing later */ +#ifdef HAVE_DIRENT_D_TYPE + pDirEntry->enmType = rtDirType(pDir->Data.d_type); +#else + pDirEntry->enmType = RTDIRENTRYTYPE_UNKNOWN; +#endif + pDirEntry->cbName = (uint16_t)cchName; + Assert(pDirEntry->cbName == cchName); + memcpy(pDirEntry->szName, pszName, cchName + 1); + + /* free cached data */ + pDir->fDataUnread = false; + rtPathFreeIprt(pDir->pszName, pDir->Data.d_name); + pDir->pszName = NULL; + } + else + rc = VERR_BUFFER_OVERFLOW; + } + + LogFlow(("RTDirRead(%p:{%s}, %p:{%s}, %p:{%u}): returns %Rrc\n", + pDir, pDir->pszPath, pDirEntry, RT_SUCCESS(rc) ? pDirEntry->szName : "<failed>", + pcbDirEntry, pcbDirEntry ? *pcbDirEntry : 0, rc)); + return rc; +} + + +/** + * Fills dummy info into the info structure. + * This function is called if we cannot stat the file. + * + * @param pInfo The struct in question. + * @param + */ +static void rtDirSetDummyInfo(PRTFSOBJINFO pInfo, RTDIRENTRYTYPE enmType) +{ + pInfo->cbObject = 0; + pInfo->cbAllocated = 0; + RTTimeSpecSetNano(&pInfo->AccessTime, 0); + RTTimeSpecSetNano(&pInfo->ModificationTime, 0); + RTTimeSpecSetNano(&pInfo->ChangeTime, 0); + RTTimeSpecSetNano(&pInfo->BirthTime, 0); + memset(&pInfo->Attr, 0, sizeof(pInfo->Attr)); + pInfo->Attr.enmAdditional = RTFSOBJATTRADD_NOTHING; + switch (enmType) + { + default: + case RTDIRENTRYTYPE_UNKNOWN: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL; break; + case RTDIRENTRYTYPE_FIFO: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_FIFO; break; + case RTDIRENTRYTYPE_DEV_CHAR: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_DEV_CHAR; break; + case RTDIRENTRYTYPE_DIRECTORY: pInfo->Attr.fMode = RTFS_DOS_DIRECTORY | RTFS_TYPE_DIRECTORY; break; + case RTDIRENTRYTYPE_DEV_BLOCK: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_DEV_BLOCK; break; + case RTDIRENTRYTYPE_FILE: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_FILE; break; + case RTDIRENTRYTYPE_SYMLINK: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_SYMLINK; break; + case RTDIRENTRYTYPE_SOCKET: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_SOCKET; break; + case RTDIRENTRYTYPE_WHITEOUT: pInfo->Attr.fMode = RTFS_DOS_NT_NORMAL | RTFS_TYPE_WHITEOUT; break; + } +} + + +RTDECL(int) RTDirReadEx(RTDIR hDir, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry, + RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags) +{ + PRTDIRINTERNAL pDir = hDir; + + /* + * Validate and digest input. + */ + if (!rtDirValidHandle(pDir)) + return VERR_INVALID_PARAMETER; + AssertPtrReturn(pDirEntry, VERR_INVALID_POINTER); + AssertMsgReturn( enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING + && enmAdditionalAttribs <= RTFSOBJATTRADD_LAST, + ("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs), + VERR_INVALID_PARAMETER); + AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER); + size_t cbDirEntry = sizeof(*pDirEntry); + if (pcbDirEntry) + { + AssertPtrReturn(pcbDirEntry, VERR_INVALID_POINTER); + cbDirEntry = *pcbDirEntry; + AssertMsgReturn(cbDirEntry >= RT_UOFFSETOF(RTDIRENTRYEX, szName[2]), + ("Invalid *pcbDirEntry=%zu (min %zu)\n", *pcbDirEntry, RT_UOFFSETOF(RTDIRENTRYEX, szName[2])), + VERR_INVALID_PARAMETER); + } + + /* + * Fetch more data if necessary and/or convert the name. + */ + int rc = rtDirReadMore(pDir); + if (RT_SUCCESS(rc)) + { + /* + * Check if we've got enough space to return the data. + */ + const char *pszName = pDir->pszName; + const size_t cchName = pDir->cchName; + const size_t cbRequired = RT_UOFFSETOF(RTDIRENTRYEX, szName[1]) + cchName; + if (pcbDirEntry) + *pcbDirEntry = cbRequired; + if (cbRequired <= cbDirEntry) + { + /* + * Setup the returned data. + */ + pDirEntry->cwcShortName = 0; + pDirEntry->wszShortName[0] = 0; + pDirEntry->cbName = (uint16_t)cchName; + Assert(pDirEntry->cbName == cchName); + memcpy(pDirEntry->szName, pszName, cchName + 1); + + /* get the info data */ + size_t cch = cchName + pDir->cchPath + 1; + char *pszNamePath = (char *)alloca(cch); + if (pszNamePath) + { + memcpy(pszNamePath, pDir->pszPath, pDir->cchPath); + memcpy(pszNamePath + pDir->cchPath, pszName, cchName + 1); + rc = RTPathQueryInfoEx(pszNamePath, &pDirEntry->Info, enmAdditionalAttribs, fFlags); + } + else + rc = VERR_NO_MEMORY; + if (RT_FAILURE(rc)) + { +#ifdef HAVE_DIRENT_D_TYPE + rtDirSetDummyInfo(&pDirEntry->Info, rtDirType(pDir->Data.d_type)); +#else + rtDirSetDummyInfo(&pDirEntry->Info, RTDIRENTRYTYPE_UNKNOWN); +#endif + rc = VWRN_NO_DIRENT_INFO; + } + + /* free cached data */ + pDir->fDataUnread = false; + rtPathFreeIprt(pDir->pszName, pDir->Data.d_name); + pDir->pszName = NULL; + } + else + rc = VERR_BUFFER_OVERFLOW; + } + + return rc; +} + + +RTDECL(int) RTDirRewind(RTDIR hDir) +{ + PRTDIRINTERNAL pDir = hDir; + + /* + * Validate and digest input. + */ + if (!rtDirValidHandle(pDir)) + return VERR_INVALID_PARAMETER; + + /* + * Do the rewinding. + */ + /** @todo OS/2 does not rescan the directory as it should. */ + rewinddir(pDir->pDir); + pDir->fDataUnread = false; + + return VINF_SUCCESS; +} + + +RTDECL(int) RTDirRename(const char *pszSrc, const char *pszDst, unsigned fRename) +{ + /* + * Validate input. + */ + AssertPtrReturn(pszSrc, VERR_INVALID_POINTER); + AssertPtrReturn(pszDst, VERR_INVALID_POINTER); + AssertMsgReturn(*pszSrc, ("%p\n", pszSrc), VERR_INVALID_PARAMETER); + AssertMsgReturn(*pszDst, ("%p\n", pszDst), VERR_INVALID_PARAMETER); + AssertMsgReturn(!(fRename & ~RTPATHRENAME_FLAGS_REPLACE), ("%#x\n", fRename), VERR_INVALID_PARAMETER); + + /* + * Take common cause with RTPathRename. + */ + int rc = rtPathPosixRename(pszSrc, pszDst, fRename, RTFS_TYPE_DIRECTORY); + + LogFlow(("RTDirRename(%p:{%s}, %p:{%s}): returns %Rrc\n", + pszSrc, pszSrc, pszDst, pszDst, rc)); + return rc; +} + |