| 1 | /* $Id: fs.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - File System.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | *
|
|---|
| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
|---|
| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
|---|
| 28 | * additional information or have any questions.
|
|---|
| 29 | */
|
|---|
| 30 |
|
|---|
| 31 |
|
|---|
| 32 | /*******************************************************************************
|
|---|
| 33 | * Header Files *
|
|---|
| 34 | *******************************************************************************/
|
|---|
| 35 | #ifndef RT_OS_WINDOWS
|
|---|
| 36 | # define RTTIME_INCL_TIMESPEC
|
|---|
| 37 | # include <sys/time.h>
|
|---|
| 38 | #endif
|
|---|
| 39 |
|
|---|
| 40 | #include <iprt/fs.h>
|
|---|
| 41 | #include <iprt/assert.h>
|
|---|
| 42 | #include <iprt/time.h>
|
|---|
| 43 | #include <iprt/string.h>
|
|---|
| 44 | #include <iprt/path.h>
|
|---|
| 45 | #include <iprt/ctype.h>
|
|---|
| 46 | #include "internal/fs.h"
|
|---|
| 47 |
|
|---|
| 48 |
|
|---|
| 49 | /**
|
|---|
| 50 | * Converts dos-style attributes to Unix attributes.
|
|---|
| 51 | *
|
|---|
| 52 | * @returns
|
|---|
| 53 | * @param fMode The mode mask containing dos-style attibutes only.
|
|---|
| 54 | * @param pszName The filename which this applies to (exe check).
|
|---|
| 55 | * @param cbName The length of that filename. (optional, set 0)
|
|---|
| 56 | */
|
|---|
| 57 | RTFMODE rtFsModeFromDos(RTFMODE fMode, const char *pszName, unsigned cbName)
|
|---|
| 58 | {
|
|---|
| 59 | fMode &= ~((1 << RTFS_DOS_SHIFT) - 1);
|
|---|
| 60 |
|
|---|
| 61 | /* everything is readable. */
|
|---|
| 62 | fMode |= RTFS_UNIX_IRUSR | RTFS_UNIX_IRGRP | RTFS_UNIX_IROTH;
|
|---|
| 63 | if (fMode & RTFS_DOS_DIRECTORY)
|
|---|
| 64 | /* directories are executable. */
|
|---|
| 65 | fMode |= RTFS_TYPE_DIRECTORY | RTFS_UNIX_IXUSR | RTFS_UNIX_IXGRP | RTFS_UNIX_IXOTH;
|
|---|
| 66 | else
|
|---|
| 67 | {
|
|---|
| 68 | fMode |= RTFS_TYPE_FILE;
|
|---|
| 69 | if (!cbName && pszName)
|
|---|
| 70 | cbName = strlen(pszName);
|
|---|
| 71 | if (cbName >= 4 && pszName[cbName - 4] == '.')
|
|---|
| 72 | {
|
|---|
| 73 | /* check for executable extension. */
|
|---|
| 74 | const char *pszExt = &pszName[cbName - 3];
|
|---|
| 75 | char szExt[4];
|
|---|
| 76 | szExt[0] = tolower(pszExt[0]);
|
|---|
| 77 | szExt[1] = tolower(pszExt[1]);
|
|---|
| 78 | szExt[2] = tolower(pszExt[2]);
|
|---|
| 79 | szExt[3] = '\0';
|
|---|
| 80 | if ( !memcmp(szExt, "exe", 4)
|
|---|
| 81 | || !memcmp(szExt, "bat", 4)
|
|---|
| 82 | || !memcmp(szExt, "com", 4)
|
|---|
| 83 | || !memcmp(szExt, "cmd", 4)
|
|---|
| 84 | || !memcmp(szExt, "btm", 4)
|
|---|
| 85 | )
|
|---|
| 86 | fMode |= RTFS_UNIX_IXUSR | RTFS_UNIX_IXGRP | RTFS_UNIX_IXOTH;
|
|---|
| 87 | }
|
|---|
| 88 | }
|
|---|
| 89 | /* writable? */
|
|---|
| 90 | if (!(fMode & RTFS_DOS_READONLY))
|
|---|
| 91 | fMode |= RTFS_UNIX_IWUSR | RTFS_UNIX_IWGRP | RTFS_UNIX_IWOTH;
|
|---|
| 92 | return fMode;
|
|---|
| 93 | }
|
|---|
| 94 |
|
|---|
| 95 |
|
|---|
| 96 | /**
|
|---|
| 97 | * Converts Unix attributes to Dos-style attributes.
|
|---|
| 98 | *
|
|---|
| 99 | * @returns File mode mask.
|
|---|
| 100 | * @param fMode The mode mask containing dos-style attibutes only.
|
|---|
| 101 | * @param pszName The filename which this applies to (hidden check).
|
|---|
| 102 | * @param cbName The length of that filename. (optional, set 0)
|
|---|
| 103 | */
|
|---|
| 104 | RTFMODE rtFsModeFromUnix(RTFMODE fMode, const char *pszName, unsigned cbName)
|
|---|
| 105 | {
|
|---|
| 106 | fMode &= RTFS_UNIX_MASK;
|
|---|
| 107 |
|
|---|
| 108 | if (!(fMode & (RTFS_UNIX_IWUSR | RTFS_UNIX_IWGRP | RTFS_UNIX_IWOTH)))
|
|---|
| 109 | fMode |= RTFS_DOS_READONLY;
|
|---|
| 110 | if (RTFS_IS_DIRECTORY(fMode))
|
|---|
| 111 | fMode |= RTFS_DOS_DIRECTORY;
|
|---|
| 112 | if (!(fMode & RTFS_DOS_MASK))
|
|---|
| 113 | fMode |= RTFS_DOS_NT_NORMAL;
|
|---|
| 114 | if (!(fMode & RTFS_DOS_HIDDEN) && pszName)
|
|---|
| 115 | {
|
|---|
| 116 | pszName = RTPathFilename(pszName);
|
|---|
| 117 | if (pszName && *pszName == '.')
|
|---|
| 118 | fMode |= RTFS_DOS_HIDDEN;
|
|---|
| 119 | }
|
|---|
| 120 | return fMode;
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 |
|
|---|
| 124 | /**
|
|---|
| 125 | * Converts dos-style attributes to Unix attributes.
|
|---|
| 126 | *
|
|---|
| 127 | * @returns Normalized file mode.
|
|---|
| 128 | * @param fMode The mode mask containing dos-style attibutes only.
|
|---|
| 129 | * @param pszName The filename which this applies to (exe check).
|
|---|
| 130 | * @param cbName The length of that filename. (optional, set 0)
|
|---|
| 131 | */
|
|---|
| 132 | RTFMODE rtFsModeNormalize(RTFMODE fMode, const char *pszName, unsigned cbName)
|
|---|
| 133 | {
|
|---|
| 134 | if (!(fMode & RTFS_UNIX_MASK))
|
|---|
| 135 | rtFsModeFromDos(fMode, pszName, cbName);
|
|---|
| 136 | else if (!(fMode & RTFS_DOS_MASK))
|
|---|
| 137 | rtFsModeFromUnix(fMode, pszName, cbName);
|
|---|
| 138 | else if (!(fMode & RTFS_TYPE_MASK))
|
|---|
| 139 | fMode |= fMode & RTFS_DOS_DIRECTORY ? RTFS_TYPE_DIRECTORY : RTFS_TYPE_FILE;
|
|---|
| 140 | else if (RTFS_IS_DIRECTORY(fMode))
|
|---|
| 141 | fMode |= RTFS_DOS_DIRECTORY;
|
|---|
| 142 | return fMode;
|
|---|
| 143 | }
|
|---|
| 144 |
|
|---|
| 145 |
|
|---|
| 146 | /**
|
|---|
| 147 | * Checks if the file mode is valid or not.
|
|---|
| 148 | *
|
|---|
| 149 | * @return true if valid.
|
|---|
| 150 | * @return false if invalid, done bitching.
|
|---|
| 151 | * @param fMode The file mode.
|
|---|
| 152 | */
|
|---|
| 153 | bool rtFsModeIsValid(RTFMODE fMode)
|
|---|
| 154 | {
|
|---|
| 155 | AssertMsgReturn( (!RTFS_IS_DIRECTORY(fMode) && !(fMode & RTFS_DOS_DIRECTORY))
|
|---|
| 156 | || (RTFS_IS_DIRECTORY(fMode) && (fMode & RTFS_DOS_DIRECTORY)),
|
|---|
| 157 | ("%RTfmode\n", fMode), false);
|
|---|
| 158 | AssertMsgReturn(RTFS_TYPE_MASK & fMode,
|
|---|
| 159 | ("%RTfmode\n", fMode), false);
|
|---|
| 160 | /** @todo more checks! */
|
|---|
| 161 | return true;
|
|---|
| 162 | }
|
|---|
| 163 |
|
|---|
| 164 |
|
|---|
| 165 | /**
|
|---|
| 166 | * Checks if the file mode is valid as a permission mask or not.
|
|---|
| 167 | *
|
|---|
| 168 | * @return true if valid.
|
|---|
| 169 | * @return false if invalid, done bitching.
|
|---|
| 170 | * @param fMode The file mode.
|
|---|
| 171 | */
|
|---|
| 172 | bool rtFsModeIsValidPermissions(RTFMODE fMode)
|
|---|
| 173 | {
|
|---|
| 174 | AssertMsgReturn( (!RTFS_IS_DIRECTORY(fMode) && !(fMode & RTFS_DOS_DIRECTORY))
|
|---|
| 175 | || (RTFS_IS_DIRECTORY(fMode) && (fMode & RTFS_DOS_DIRECTORY)),
|
|---|
| 176 | ("%RTfmode\n", fMode), false);
|
|---|
| 177 | /** @todo more checks! */
|
|---|
| 178 | return true;
|
|---|
| 179 | }
|
|---|
| 180 |
|
|---|
| 181 |
|
|---|
| 182 | #ifndef RT_OS_WINDOWS
|
|---|
| 183 | /**
|
|---|
| 184 | * Internal worker function which setups RTFSOBJINFO based on a UNIX stat struct.
|
|---|
| 185 | *
|
|---|
| 186 | * @param pObjInfo The file system object info structure to setup.
|
|---|
| 187 | * @param pStat The stat structure to use.
|
|---|
| 188 | * @param pszName The filename which this applies to (exe/hidden check).
|
|---|
| 189 | * @param cbName The length of that filename. (optional, set 0)
|
|---|
| 190 | */
|
|---|
| 191 | void rtFsConvertStatToObjInfo(PRTFSOBJINFO pObjInfo, const struct stat *pStat, const char *pszName, unsigned cbName)
|
|---|
| 192 | {
|
|---|
| 193 | pObjInfo->cbObject = pStat->st_size;
|
|---|
| 194 | pObjInfo->cbAllocated = pStat->st_size;
|
|---|
| 195 |
|
|---|
| 196 | #ifdef HAVE_STAT_NSEC
|
|---|
| 197 | RTTimeSpecAddNano(RTTimeSpecSetSeconds(&pObjInfo->AccessTime, pStat->st_atime), pStat->st_atimensec);
|
|---|
| 198 | RTTimeSpecAddNano(RTTimeSpecSetSeconds(&pObjInfo->ModificationTime, pStat->st_mtime), pStat->st_mtimensec);
|
|---|
| 199 | RTTimeSpecAddNano(RTTimeSpecSetSeconds(&pObjInfo->ChangeTime, pStat->st_ctime), pStat->st_ctimensec);
|
|---|
| 200 | #ifdef HAVE_STAT_BIRTHTIME
|
|---|
| 201 | RTTimeSpecAddNano(RTTimeSpecSetSeconds(&pObjInfo->BirthTime, pStat->st_birthtime), pStat->st_birthtimensec);
|
|---|
| 202 | #endif
|
|---|
| 203 |
|
|---|
| 204 | #elif defined(HAVE_STAT_TIMESPEC_BRIEF)
|
|---|
| 205 | RTTimeSpecSetTimespec(&pObjInfo->AccessTime, &pStat->st_atim);
|
|---|
| 206 | RTTimeSpecSetTimespec(&pObjInfo->ModificationTime, &pStat->st_mtim);
|
|---|
| 207 | RTTimeSpecSetTimespec(&pObjInfo->ChangeTime, &pStat->st_ctim);
|
|---|
| 208 | # ifdef HAVE_STAT_BIRTHTIME
|
|---|
| 209 | RTTimeSpecSetTimespec(&pObjInfo->BirthTime, &pStat->st_birthtim);
|
|---|
| 210 | # endif
|
|---|
| 211 |
|
|---|
| 212 | #elif defined(HAVE_STAT_TIMESPEC)
|
|---|
| 213 | RTTimeSpecSetTimespec(&pObjInfo->AccessTime, pStat->st_atimespec);
|
|---|
| 214 | RTTimeSpecSetTimespec(&pObjInfo->ModificationTime, pStat->st_mtimespec);
|
|---|
| 215 | RTTimeSpecSetTimespec(&pObjInfo->ChangeTime, pStat->st_ctimespec);
|
|---|
| 216 | # ifdef HAVE_STAT_BIRTHTIME
|
|---|
| 217 | RTTimeSpecSetTimespec(&pObjInfo->BirthTime, pStat->st_birthtimespec);
|
|---|
| 218 | # endif
|
|---|
| 219 |
|
|---|
| 220 | #else /* just the normal stuff */
|
|---|
| 221 | RTTimeSpecSetSeconds(&pObjInfo->AccessTime, pStat->st_atime);
|
|---|
| 222 | RTTimeSpecSetSeconds(&pObjInfo->ModificationTime, pStat->st_mtime);
|
|---|
| 223 | RTTimeSpecSetSeconds(&pObjInfo->ChangeTime, pStat->st_ctime);
|
|---|
| 224 | # ifdef HAVE_STAT_BIRTHTIME
|
|---|
| 225 | RTTimeSpecSetSeconds(&pObjInfo->BirthTime, pStat->st_birthtime);
|
|---|
| 226 | # endif
|
|---|
| 227 | #endif
|
|---|
| 228 | #ifndef HAVE_STAT_BIRTHTIME
|
|---|
| 229 | pObjInfo->BirthTime = pObjInfo->ChangeTime;
|
|---|
| 230 | #endif
|
|---|
| 231 |
|
|---|
| 232 |
|
|---|
| 233 | /* the file mode */
|
|---|
| 234 | RTFMODE fMode = pStat->st_mode & RTFS_UNIX_MASK;
|
|---|
| 235 | Assert(RTFS_UNIX_ISUID == S_ISUID);
|
|---|
| 236 | Assert(RTFS_UNIX_ISGID == S_ISGID);
|
|---|
| 237 | #ifdef S_ISTXT
|
|---|
| 238 | Assert(RTFS_UNIX_ISTXT == S_ISTXT);
|
|---|
| 239 | #elif defined(S_ISVTX)
|
|---|
| 240 | Assert(RTFS_UNIX_ISTXT == S_ISVTX);
|
|---|
| 241 | #else
|
|---|
| 242 | #error "S_ISVTX / S_ISTXT isn't defined"
|
|---|
| 243 | #endif
|
|---|
| 244 | Assert(RTFS_UNIX_IRWXU == S_IRWXU);
|
|---|
| 245 | Assert(RTFS_UNIX_IRUSR == S_IRUSR);
|
|---|
| 246 | Assert(RTFS_UNIX_IWUSR == S_IWUSR);
|
|---|
| 247 | Assert(RTFS_UNIX_IXUSR == S_IXUSR);
|
|---|
| 248 | Assert(RTFS_UNIX_IRWXG == S_IRWXG);
|
|---|
| 249 | Assert(RTFS_UNIX_IRGRP == S_IRGRP);
|
|---|
| 250 | Assert(RTFS_UNIX_IWGRP == S_IWGRP);
|
|---|
| 251 | Assert(RTFS_UNIX_IXGRP == S_IXGRP);
|
|---|
| 252 | Assert(RTFS_UNIX_IRWXO == S_IRWXO);
|
|---|
| 253 | Assert(RTFS_UNIX_IROTH == S_IROTH);
|
|---|
| 254 | Assert(RTFS_UNIX_IWOTH == S_IWOTH);
|
|---|
| 255 | Assert(RTFS_UNIX_IXOTH == S_IXOTH);
|
|---|
| 256 | Assert(RTFS_TYPE_FIFO == S_IFIFO);
|
|---|
| 257 | Assert(RTFS_TYPE_DEV_CHAR == S_IFCHR);
|
|---|
| 258 | Assert(RTFS_TYPE_DIRECTORY == S_IFDIR);
|
|---|
| 259 | Assert(RTFS_TYPE_DEV_BLOCK == S_IFBLK);
|
|---|
| 260 | Assert(RTFS_TYPE_FILE == S_IFREG);
|
|---|
| 261 | Assert(RTFS_TYPE_SYMLINK == S_IFLNK);
|
|---|
| 262 | Assert(RTFS_TYPE_SOCKET == S_IFSOCK);
|
|---|
| 263 | #ifdef S_IFWHT
|
|---|
| 264 | Assert(RTFS_TYPE_WHITEOUT == S_IFWHT);
|
|---|
| 265 | #endif
|
|---|
| 266 | Assert(RTFS_TYPE_MASK == S_IFMT);
|
|---|
| 267 |
|
|---|
| 268 | pObjInfo->Attr.fMode = rtFsModeFromUnix(fMode, pszName, cbName);
|
|---|
| 269 |
|
|---|
| 270 | /* additional unix attribs */
|
|---|
| 271 | pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX;
|
|---|
| 272 | pObjInfo->Attr.u.Unix.uid = pStat->st_uid;
|
|---|
| 273 | pObjInfo->Attr.u.Unix.gid = pStat->st_gid;
|
|---|
| 274 | pObjInfo->Attr.u.Unix.cHardlinks = pStat->st_nlink;
|
|---|
| 275 | pObjInfo->Attr.u.Unix.INodeIdDevice = pStat->st_dev;
|
|---|
| 276 | pObjInfo->Attr.u.Unix.INodeId = pStat->st_ino;
|
|---|
| 277 | #ifdef HAVE_STAT_FLAGS
|
|---|
| 278 | pObjInfo->Attr.u.Unix.fFlags = pStat->st_flags;
|
|---|
| 279 | #else
|
|---|
| 280 | pObjInfo->Attr.u.Unix.fFlags = 0;
|
|---|
| 281 | #endif
|
|---|
| 282 | #ifdef HAVE_STAT_GEN
|
|---|
| 283 | pObjInfo->Attr.u.Unix.GenerationId = pStat->st_gen;
|
|---|
| 284 | #else
|
|---|
| 285 | pObjInfo->Attr.u.Unix.GenerationId = 0;
|
|---|
| 286 | #endif
|
|---|
| 287 | pObjInfo->Attr.u.Unix.Device = pStat->st_rdev;
|
|---|
| 288 | }
|
|---|
| 289 |
|
|---|
| 290 | #endif /* !RT_OS_WINDOWS */
|
|---|
