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/* $Id: fs-posix.cpp $ */
/** @file
* IPRT - File System, Linux.
*/
/*
* 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_FS
#include <sys/statvfs.h>
#include <errno.h>
#include <stdio.h>
#ifdef RT_OS_LINUX
# include <mntent.h>
#endif
#if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
# include <sys/mount.h>
#endif
#include <iprt/fs.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/log.h>
#include <iprt/string.h>
#include "internal/fs.h"
#include "internal/path.h"
RTR3DECL(int) RTFsQuerySizes(const char *pszFsPath, RTFOFF *pcbTotal, RTFOFF *pcbFree,
uint32_t *pcbBlock, uint32_t *pcbSector)
{
/*
* Validate input.
*/
AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
AssertReturn(*pszFsPath != '\0', VERR_INVALID_PARAMETER);
/*
* Convert the path and query the information.
*/
char const *pszNativeFsPath;
int rc = rtPathToNative(&pszNativeFsPath, pszFsPath, NULL);
if (RT_SUCCESS(rc))
{
/** @todo I'm not quite sure if statvfs was properly specified by SuS, I have to check my own
* implementation and FreeBSD before this can eventually be promoted to posix. */
struct statvfs StatVFS;
RT_ZERO(StatVFS);
if (!statvfs(pszNativeFsPath, &StatVFS))
{
/*
* Calc the returned values.
*/
if (pcbTotal)
*pcbTotal = (RTFOFF)StatVFS.f_blocks * StatVFS.f_frsize;
if (pcbFree)
*pcbFree = (RTFOFF)StatVFS.f_bavail * StatVFS.f_frsize;
if (pcbBlock)
*pcbBlock = StatVFS.f_frsize;
/* no idea how to get the sector... */
if (pcbSector)
*pcbSector = 512;
}
else
rc = RTErrConvertFromErrno(errno);
rtPathFreeNative(pszNativeFsPath, pszFsPath);
}
LogFlow(("RTFsQuerySizes(%p:{%s}, %p:{%RTfoff}, %p:{%RTfoff}, %p:{%RX32}, %p:{%RX32}): returns %Rrc\n",
pszFsPath, pszFsPath, pcbTotal, pcbTotal ? *pcbTotal : 0, pcbFree, pcbFree ? *pcbFree : 0,
pcbBlock, pcbBlock ? *pcbBlock : 0, pcbSector, pcbSector ? *pcbSector : 0, rc));
return rc;
}
RTR3DECL(int) RTFsQuerySerial(const char *pszFsPath, uint32_t *pu32Serial)
{
/*
* Validate input.
*/
AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
AssertReturn(*pszFsPath != '\0', VERR_INVALID_PARAMETER);
AssertPtrReturn(pu32Serial, VERR_INVALID_POINTER);
/*
* Convert the path and query the stats.
* We're simply return the device id.
*/
char const *pszNativeFsPath;
int rc = rtPathToNative(&pszNativeFsPath, pszFsPath, NULL);
if (RT_SUCCESS(rc))
{
struct stat Stat;
if (!stat(pszNativeFsPath, &Stat))
{
if (pu32Serial)
*pu32Serial = (uint32_t)Stat.st_dev;
}
else
rc = RTErrConvertFromErrno(errno);
rtPathFreeNative(pszNativeFsPath, pszFsPath);
}
LogFlow(("RTFsQuerySerial(%p:{%s}, %p:{%RX32}: returns %Rrc\n",
pszFsPath, pszFsPath, pu32Serial, pu32Serial ? *pu32Serial : 0, rc));
return rc;
}
RTR3DECL(int) RTFsQueryProperties(const char *pszFsPath, PRTFSPROPERTIES pProperties)
{
/*
* Validate.
*/
AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
AssertReturn(*pszFsPath != '\0', VERR_INVALID_PARAMETER);
AssertPtrReturn(pProperties, VERR_INVALID_POINTER);
/*
* Convert the path and query the information.
*/
char const *pszNativeFsPath;
int rc = rtPathToNative(&pszNativeFsPath, pszFsPath, NULL);
if (RT_SUCCESS(rc))
{
struct statvfs StatVFS;
RT_ZERO(StatVFS);
if (!statvfs(pszNativeFsPath, &StatVFS))
{
/*
* Calc/fake the returned values.
*/
pProperties->cbMaxComponent = StatVFS.f_namemax;
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
pProperties->fCaseSensitive = false;
#else
pProperties->fCaseSensitive = true;
#endif
pProperties->fCompressed = false;
pProperties->fFileCompression = false;
pProperties->fReadOnly = !!(StatVFS.f_flag & ST_RDONLY);
pProperties->fRemote = false;
pProperties->fSupportsUnicode = true;
}
else
rc = RTErrConvertFromErrno(errno);
rtPathFreeNative(pszNativeFsPath, pszFsPath);
}
LogFlow(("RTFsQueryProperties(%p:{%s}, %p:{.cbMaxComponent=%u, .fReadOnly=%RTbool}): returns %Rrc\n",
pszFsPath, pszFsPath, pProperties, pProperties->cbMaxComponent, pProperties->fReadOnly, rc));
return rc;
}
RTR3DECL(bool) RTFsIsCaseSensitive(const char *pszFsPath)
{
RT_NOREF_PV(pszFsPath);
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
return false;
#else
return true;
#endif
}
RTR3DECL(int) RTFsQueryType(const char *pszFsPath, PRTFSTYPE penmType)
{
*penmType = RTFSTYPE_UNKNOWN;
/*
* Validate input.
*/
AssertPtrReturn(pszFsPath, VERR_INVALID_POINTER);
AssertReturn(*pszFsPath, VERR_INVALID_PARAMETER);
/*
* Convert the path and query the stats.
* We're simply return the device id.
*/
char const *pszNativeFsPath;
int rc = rtPathToNative(&pszNativeFsPath, pszFsPath, NULL);
if (RT_SUCCESS(rc))
{
struct stat Stat;
if (!stat(pszNativeFsPath, &Stat))
{
#if defined(RT_OS_LINUX)
FILE *mounted = setmntent("/proc/mounts", "r");
if (!mounted)
mounted = setmntent("/etc/mtab", "r");
if (mounted)
{
char szBuf[1024];
struct stat mntStat;
struct mntent mntEnt;
while (getmntent_r(mounted, &mntEnt, szBuf, sizeof(szBuf)))
{
if (!stat(mntEnt.mnt_dir, &mntStat))
{
if (mntStat.st_dev == Stat.st_dev)
{
if (!strcmp("ext4", mntEnt.mnt_type))
*penmType = RTFSTYPE_EXT4;
else if (!strcmp("ext3", mntEnt.mnt_type))
*penmType = RTFSTYPE_EXT3;
else if (!strcmp("ext2", mntEnt.mnt_type))
*penmType = RTFSTYPE_EXT2;
else if (!strcmp("jfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_JFS;
else if (!strcmp("xfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_XFS;
else if (!strcmp("btrfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_BTRFS;
else if ( !strcmp("vfat", mntEnt.mnt_type)
|| !strcmp("msdos", mntEnt.mnt_type))
*penmType = RTFSTYPE_FAT;
else if (!strcmp("ntfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_NTFS;
else if (!strcmp("hpfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_HPFS;
else if (!strcmp("ufs", mntEnt.mnt_type))
*penmType = RTFSTYPE_UFS;
else if (!strcmp("tmpfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_TMPFS;
else if (!strcmp("hfsplus", mntEnt.mnt_type))
*penmType = RTFSTYPE_HFS;
else if (!strcmp("udf", mntEnt.mnt_type))
*penmType = RTFSTYPE_UDF;
else if (!strcmp("iso9660", mntEnt.mnt_type))
*penmType = RTFSTYPE_ISO9660;
else if (!strcmp("smbfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_SMBFS;
else if (!strcmp("cifs", mntEnt.mnt_type))
*penmType = RTFSTYPE_CIFS;
else if (!strcmp("nfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_NFS;
else if (!strcmp("nfs4", mntEnt.mnt_type))
*penmType = RTFSTYPE_NFS;
else if (!strcmp("ocfs2", mntEnt.mnt_type))
*penmType = RTFSTYPE_OCFS2;
else if (!strcmp("sysfs", mntEnt.mnt_type))
*penmType = RTFSTYPE_SYSFS;
else if (!strcmp("proc", mntEnt.mnt_type))
*penmType = RTFSTYPE_PROC;
else if ( !strcmp("fuse", mntEnt.mnt_type)
|| !strncmp("fuse.", mntEnt.mnt_type, 5)
|| !strcmp("fuseblk", mntEnt.mnt_type))
*penmType = RTFSTYPE_FUSE;
else
{
/* sometimes there are more than one entry for the same partition */
continue;
}
break;
}
}
}
endmntent(mounted);
}
#elif defined(RT_OS_SOLARIS)
/*
* Home directories are normally loopback mounted in Solaris 11 (st_fstype=="lofs")
* so statvfs(2) is needed to get the underlying file system information.
*/
struct statvfs statvfsBuf;
if (!statvfs(pszNativeFsPath, &statvfsBuf))
{
if (!strcmp("zfs", statvfsBuf.f_basetype))
*penmType = RTFSTYPE_ZFS;
else if (!strcmp("ufs", statvfsBuf.f_basetype))
*penmType = RTFSTYPE_UFS;
else if (!strcmp("nfs", statvfsBuf.f_basetype))
*penmType = RTFSTYPE_NFS;
}
#elif defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
struct statfs statfsBuf;
if (!statfs(pszNativeFsPath, &statfsBuf))
{
if (!strcmp("hfs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_HFS;
else if (!strcmp("apfs", statfsBuf.f_fstypename)) /** @todo verify apfs signature. */
*penmType = RTFSTYPE_APFS;
else if ( !strcmp("fat", statfsBuf.f_fstypename)
|| !strcmp("msdos", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_FAT;
else if (!strcmp("ntfs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_NTFS;
else if (!strcmp("autofs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_AUTOFS;
else if (!strcmp("devfs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_DEVFS;
else if (!strcmp("nfs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_NFS;
else if (!strcmp("ufs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_UFS;
else if (!strcmp("zfs", statfsBuf.f_fstypename))
*penmType = RTFSTYPE_ZFS;
}
else
rc = RTErrConvertFromErrno(errno);
#endif
}
else
rc = RTErrConvertFromErrno(errno);
rtPathFreeNative(pszNativeFsPath, pszFsPath);
}
return rc;
}
|
