| 1 | /* $Id: ntstat.c 2993 2016-11-01 22:41:26Z bird $ */
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| 2 | /** @file
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| 3 | * MSC + NT stat, lstat and fstat.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2005-2013 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 10 | * copy of this software and associated documentation files (the "Software"),
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| 11 | * to deal in the Software without restriction, including without limitation
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the
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| 14 | * Software is furnished to do so, subject to the following conditions:
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| 15 | *
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| 16 | * The above copyright notice and this permission notice shall be included
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| 17 | * in all copies or substantial portions of the Software.
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| 18 | *
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 24 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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| 25 | * IN THE SOFTWARE.
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| 26 | *
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| 27 | * Alternatively, the content of this file may be used under the terms of the
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| 28 | * GPL version 2 or later, or LGPL version 2.1 or later.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <stdio.h>
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| 36 | #include <errno.h>
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| 37 | #include <malloc.h>
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| 38 |
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| 39 | #include "ntstuff.h"
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| 40 | #include "nthlp.h"
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| 41 | #include "ntstat.h"
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| 42 |
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| 43 |
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| 44 | #undef stat
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| 45 |
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| 46 | static int birdIsExecutableExtension(const char *pszExt)
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| 47 | {
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| 48 | switch (pszExt[0])
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| 49 | {
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| 50 | default:
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| 51 | return 0;
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| 52 |
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| 53 | case 'e': /* exe */
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| 54 | return pszExt[1] == 'x' && pszExt[2] == 'e' && pszExt[3] == '\0';
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| 55 |
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| 56 | case 'b': /* bat */
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| 57 | return pszExt[1] == 'a' && pszExt[2] == 't' && pszExt[3] == '\0';
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| 58 |
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| 59 | case 'v': /* vbs */
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| 60 | return pszExt[1] == 'v' && pszExt[2] == 's' && pszExt[3] == '\0';
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| 61 |
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| 62 | case 'c': /* com and cmd */
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| 63 | return (pszExt[1] == 'o' && pszExt[2] == 'm' && pszExt[3] == '\0')
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| 64 | || (pszExt[1] == 'm' && pszExt[2] == 'd' && pszExt[3] == '\0');
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| 65 | }
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| 66 | }
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| 67 |
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| 68 |
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| 69 | static int birdIsFileExecutable(const char *pszName)
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| 70 | {
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| 71 | const char *pszExt = NULL;
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| 72 | char szExt[8];
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| 73 | size_t cchExt;
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| 74 | unsigned i;
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| 75 | char ch;
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| 76 |
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| 77 | /* Look for a 3 char extension. */
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| 78 | ch = *pszName++;
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| 79 | if (!ch)
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| 80 | return 0;
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| 81 |
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| 82 | while ((ch = *pszName++) != '\0')
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| 83 | if (ch == '.')
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| 84 | pszExt = pszName;
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| 85 |
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| 86 | if (!pszExt)
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| 87 | return 0;
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| 88 | pszExt++;
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| 89 | cchExt = pszName - pszExt;
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| 90 | if (cchExt != 3)
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| 91 | return 0;
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| 92 |
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| 93 | /* Copy the extension out and lower case it. Fail immediately on non-alpha chars. */
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| 94 | for (i = 0; i < cchExt; i++, pszExt++)
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| 95 | {
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| 96 | ch = *pszExt;
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| 97 | if (ch >= 'a' && ch <= 'z')
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| 98 | { /* likely */ }
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| 99 | else if (ch >= 'A' && ch <= 'Z')
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| 100 | ch += 'a' - 'A';
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| 101 | else
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| 102 | return 0;
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| 103 | szExt[i] = ch;
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| 104 | }
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| 105 | szExt[i] = '\0';
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| 106 |
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| 107 | return birdIsExecutableExtension(szExt);
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| 108 | }
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| 109 |
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| 110 |
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| 111 | /**
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| 112 | * @a pwcName could be the full path.
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| 113 | */
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| 114 | static int birdIsFileExecutableW(WCHAR const *pwcName, size_t cwcName)
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| 115 | {
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| 116 | char szExt[8];
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| 117 | unsigned cchExt;
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| 118 | unsigned i;
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| 119 | WCHAR const *pwc;
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| 120 |
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| 121 | /* Look for a 3 char extension. */
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| 122 | if (cwcName > 2 && pwcName[cwcName - 2] == '.')
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| 123 | return 0;
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| 124 | else if (cwcName > 3 && pwcName[cwcName - 3] == '.')
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| 125 | return 0;
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| 126 | else if (cwcName > 4 && pwcName[cwcName - 4] == '.')
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| 127 | cchExt = 3;
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| 128 | else
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| 129 | return 0;
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| 130 |
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| 131 | /* Copy the extension out and lower case it. Fail immediately on non-alpha chars. */
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| 132 | pwc = &pwcName[cwcName - cchExt];
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| 133 | for (i = 0; i < cchExt; i++, pwc++)
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| 134 | {
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| 135 | WCHAR wc = *pwc;
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| 136 | if (wc >= 'a' && wc <= 'z')
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| 137 | { /* likely */ }
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| 138 | else if (wc >= 'A' && wc <= 'Z')
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| 139 | wc += 'a' - 'A';
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| 140 | else
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| 141 | return 0;
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| 142 | szExt[i] = (char)wc;
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| 143 | }
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| 144 | szExt[i] = '\0';
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| 145 |
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| 146 | return birdIsExecutableExtension(szExt);
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| 147 | }
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| 148 |
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| 149 |
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| 150 | static unsigned short birdFileInfoToMode(HANDLE hFile, ULONG fAttribs, const char *pszName,
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| 151 | const wchar_t *pwszName, size_t cbNameW, __int16 *pfIsDirSymlink)
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| 152 | {
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| 153 | unsigned short fMode;
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| 154 |
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| 155 | /* File type. */
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| 156 | if ( (fAttribs & FILE_ATTRIBUTE_REPARSE_POINT)
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| 157 | && hFile != INVALID_HANDLE_VALUE)
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| 158 | {
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| 159 | MY_FILE_ATTRIBUTE_TAG_INFORMATION TagInfo;
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| 160 | MY_IO_STATUS_BLOCK Ios;
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| 161 | MY_NTSTATUS rcNt;
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| 162 | Ios.Information = 0;
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| 163 | Ios.u.Status = -1;
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| 164 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &TagInfo, sizeof(TagInfo), MyFileAttributeTagInformation);
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| 165 | if ( !MY_NT_SUCCESS(rcNt)
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| 166 | || !MY_NT_SUCCESS(Ios.u.Status)
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| 167 | || TagInfo.ReparseTag != IO_REPARSE_TAG_SYMLINK)
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| 168 | fAttribs &= ~FILE_ATTRIBUTE_REPARSE_POINT;
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| 169 | }
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| 170 |
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| 171 | if (fAttribs & FILE_ATTRIBUTE_REPARSE_POINT)
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| 172 | {
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| 173 | *pfIsDirSymlink = !!(fAttribs & FILE_ATTRIBUTE_DIRECTORY);
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| 174 | fMode = S_IFLNK;
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| 175 | }
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| 176 | else
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| 177 | {
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| 178 | *pfIsDirSymlink = 0;
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| 179 | if (fAttribs & FILE_ATTRIBUTE_DIRECTORY)
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| 180 | fMode = S_IFDIR;
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| 181 | else
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| 182 | fMode = S_IFREG;
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| 183 | }
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| 184 |
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| 185 | /* Access mask. */
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| 186 | fMode |= S_IROTH | S_IRGRP | S_IRUSR;
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| 187 | if (!(fAttribs & FILE_ATTRIBUTE_READONLY))
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| 188 | fMode |= S_IWOTH | S_IWGRP | S_IWUSR;
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| 189 | if ( (fAttribs & FILE_ATTRIBUTE_DIRECTORY)
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| 190 | || (pwszName
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| 191 | ? birdIsFileExecutableW(pwszName, cbNameW)
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| 192 | : birdIsFileExecutable(pszName)) )
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| 193 | fMode |= S_IXOTH | S_IXGRP | S_IXUSR;
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| 194 |
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| 195 | return fMode;
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| 196 | }
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| 197 |
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| 198 |
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| 199 | /**
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| 200 | * Fills in a stat structure from an MY_FILE_ID_FULL_DIR_INFORMATION entry.
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| 201 | *
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| 202 | * @param pStat The stat structure.
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| 203 | * @param pBuf The MY_FILE_ID_FULL_DIR_INFORMATION entry.
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| 204 | * @param pszPath Optionally, the path for X bit checks.
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| 205 | * @remarks Caller sets st_dev.
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| 206 | */
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| 207 | void birdStatFillFromFileIdFullDirInfo(BirdStat_T *pStat, MY_FILE_ID_FULL_DIR_INFORMATION const *pBuf, const char *pszPath)
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| 208 | {
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| 209 | pStat->st_mode = birdFileInfoToMode(INVALID_HANDLE_VALUE, pBuf->FileAttributes,
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| 210 | pszPath, pBuf->FileName, pBuf->FileNameLength, &pStat->st_dirsymlink);
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| 211 | pStat->st_padding0[0] = 0;
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| 212 | pStat->st_padding0[1] = 0;
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| 213 | pStat->st_size = pBuf->EndOfFile.QuadPart;
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| 214 | birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart, &pStat->st_birthtim);
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| 215 | birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart, &pStat->st_ctim);
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| 216 | birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart, &pStat->st_mtim);
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| 217 | birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
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| 218 | pStat->st_ino = pBuf->FileId.QuadPart;
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| 219 | pStat->st_nlink = 1;
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| 220 | pStat->st_rdev = 0;
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| 221 | pStat->st_uid = 0;
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| 222 | pStat->st_gid = 0;
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| 223 | pStat->st_padding1 = 0;
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| 224 | pStat->st_attribs = pBuf->FileAttributes;
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| 225 | pStat->st_blksize = 65536;
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| 226 | pStat->st_blocks = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
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| 227 | / BIRD_STAT_BLOCK_SIZE;
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| 228 | }
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| 229 |
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| 230 |
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| 231 | /**
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| 232 | * Fills in a stat structure from an MY_FILE_ID_BOTH_DIR_INFORMATION entry.
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| 233 | *
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| 234 | * @param pStat The stat structure.
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| 235 | * @param pBuf The MY_FILE_ID_BOTH_DIR_INFORMATION entry.
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| 236 | * @param pszPath Optionally, the path for X bit checks.
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| 237 | * @remarks Caller sets st_dev.
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| 238 | */
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| 239 | void birdStatFillFromFileIdBothDirInfo(BirdStat_T *pStat, MY_FILE_ID_BOTH_DIR_INFORMATION const *pBuf, const char *pszPath)
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| 240 | {
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| 241 | pStat->st_mode = birdFileInfoToMode(INVALID_HANDLE_VALUE, pBuf->FileAttributes,
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| 242 | pszPath, pBuf->FileName, pBuf->FileNameLength, &pStat->st_dirsymlink);
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| 243 | pStat->st_padding0[0] = 0;
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| 244 | pStat->st_padding0[1] = 0;
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| 245 | pStat->st_size = pBuf->EndOfFile.QuadPart;
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| 246 | birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart, &pStat->st_birthtim);
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| 247 | birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart, &pStat->st_ctim);
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| 248 | birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart, &pStat->st_mtim);
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| 249 | birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
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| 250 | pStat->st_ino = pBuf->FileId.QuadPart;
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| 251 | pStat->st_nlink = 1;
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| 252 | pStat->st_rdev = 0;
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| 253 | pStat->st_uid = 0;
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| 254 | pStat->st_gid = 0;
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| 255 | pStat->st_padding1 = 0;
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| 256 | pStat->st_attribs = pBuf->FileAttributes;
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| 257 | pStat->st_blksize = 65536;
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| 258 | pStat->st_blocks = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
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| 259 | / BIRD_STAT_BLOCK_SIZE;
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| 260 | }
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| 261 |
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| 262 |
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| 263 | /**
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| 264 | * Fills in a stat structure from an MY_FILE_BOTH_DIR_INFORMATION entry.
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| 265 | *
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| 266 | * @param pStat The stat structure.
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| 267 | * @param pBuf The MY_FILE_BOTH_DIR_INFORMATION entry.
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| 268 | * @param pszPath Optionally, the path for X bit checks.
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| 269 | * @remarks Caller sets st_dev.
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| 270 | */
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| 271 | void birdStatFillFromFileBothDirInfo(BirdStat_T *pStat, MY_FILE_BOTH_DIR_INFORMATION const *pBuf, const char *pszPath)
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| 272 | {
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| 273 | pStat->st_mode = birdFileInfoToMode(INVALID_HANDLE_VALUE, pBuf->FileAttributes,
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| 274 | pszPath, pBuf->FileName, pBuf->FileNameLength, &pStat->st_dirsymlink);
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| 275 | pStat->st_padding0[0] = 0;
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| 276 | pStat->st_padding0[1] = 0;
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| 277 | pStat->st_size = pBuf->EndOfFile.QuadPart;
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| 278 | birdNtTimeToTimeSpec(pBuf->CreationTime.QuadPart, &pStat->st_birthtim);
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| 279 | birdNtTimeToTimeSpec(pBuf->ChangeTime.QuadPart, &pStat->st_ctim);
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| 280 | birdNtTimeToTimeSpec(pBuf->LastWriteTime.QuadPart, &pStat->st_mtim);
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| 281 | birdNtTimeToTimeSpec(pBuf->LastAccessTime.QuadPart, &pStat->st_atim);
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| 282 | pStat->st_ino = 0;
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| 283 | pStat->st_nlink = 1;
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| 284 | pStat->st_rdev = 0;
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| 285 | pStat->st_uid = 0;
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| 286 | pStat->st_gid = 0;
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| 287 | pStat->st_padding1 = 0;
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| 288 | pStat->st_attribs = pBuf->FileAttributes;
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| 289 | pStat->st_blksize = 65536;
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| 290 | pStat->st_blocks = (pBuf->AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
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| 291 | / BIRD_STAT_BLOCK_SIZE;
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| 292 | }
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| 293 |
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| 294 |
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| 295 | int birdStatHandle2(HANDLE hFile, BirdStat_T *pStat, const char *pszPath, const wchar_t *pwszPath)
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| 296 | {
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| 297 | int rc;
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| 298 | MY_NTSTATUS rcNt;
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| 299 | #if 0
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| 300 | ULONG cbAll = sizeof(MY_FILE_ALL_INFORMATION) + 0x10000;
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| 301 | MY_FILE_ALL_INFORMATION *pAll = (MY_FILE_ALL_INFORMATION *)birdTmpAlloc(cbAll);
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| 302 | if (pAll)
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| 303 | {
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| 304 | MY_IO_STATUS_BLOCK Ios;
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| 305 | Ios.Information = 0;
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| 306 | Ios.u.Status = -1;
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| 307 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pAll, cbAll, MyFileAllInformation);
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| 308 | if (MY_NT_SUCCESS(rcNt))
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| 309 | rcNt = Ios.u.Status;
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| 310 | if (MY_NT_SUCCESS(rcNt))
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| 311 | {
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| 312 | pStat->st_mode = birdFileInfoToMode(hFile, pAll->BasicInformation.FileAttributes, pszPath,
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| 313 | pAll->NameInformation.FileNamepAll->NameInformation.FileNameLength,
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| 314 | &pStat->st_dirsymlink);
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| 315 | pStat->st_padding0[0] = 0;
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| 316 | pStat->st_padding0[1] = 0;
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| 317 | pStat->st_size = pAll->StandardInformation.EndOfFile.QuadPart;
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| 318 | birdNtTimeToTimeSpec(pAll->BasicInformation.CreationTime.QuadPart, &pStat->st_birthtim);
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| 319 | birdNtTimeToTimeSpec(pAll->BasicInformation.ChangeTime.QuadPart, &pStat->st_ctim);
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| 320 | birdNtTimeToTimeSpec(pAll->BasicInformation.LastWriteTime.QuadPart, &pStat->st_mtim);
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| 321 | birdNtTimeToTimeSpec(pAll->BasicInformation.LastAccessTime.QuadPart, &pStat->st_atim);
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| 322 | pStat->st_ino = pAll->InternalInformation.IndexNumber.QuadPart;
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| 323 | pStat->st_nlink = pAll->StandardInformation.NumberOfLinks;
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| 324 | pStat->st_rdev = 0;
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| 325 | pStat->st_uid = 0;
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| 326 | pStat->st_gid = 0;
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| 327 | pStat->st_padding1 = 0;
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| 328 | pStat->st_attribs = pAll->StandardInformation.FileAttributes;
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| 329 | pStat->st_blksize = 65536;
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| 330 | pStat->st_blocks = (pAll->StandardInformation.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
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| 331 | / BIRD_STAT_BLOCK_SIZE;
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| 332 |
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| 333 | /* Get the serial number, reusing the buffer from above. */
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| 334 | rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pAll, cbAll, MyFileFsVolumeInformation);
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| 335 | if (MY_NT_SUCCESS(rcNt))
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| 336 | rcNt = Ios.u.Status;
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| 337 | if (MY_NT_SUCCESS(rcNt))
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| 338 | {
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| 339 | MY_FILE_FS_VOLUME_INFORMATION const *pVolInfo = (MY_FILE_FS_VOLUME_INFORMATION const *)pAll;
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| 340 | pStat->st_dev = pVolInfo->VolumeSerialNumber
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| 341 | | (pVolInfo->VolumeCreationTime.QuadPart << 32);
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| 342 | rc = 0;
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| 343 | }
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| 344 | else
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| 345 | {
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| 346 | pStat->st_dev = 0;
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| 347 | rc = birdSetErrnoFromNt(rcNt);
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| 348 | }
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| 349 | }
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| 350 | else
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| 351 | rc = birdSetErrnoFromNt(rcNt);
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| 352 | }
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| 353 | else
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| 354 | rc = birdSetErrnoToNoMem();
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| 355 | #else
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| 356 | ULONG cbNameInfo = 0;
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| 357 | MY_FILE_NAME_INFORMATION *pNameInfo = NULL;
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| 358 | MY_FILE_STANDARD_INFORMATION StdInfo;
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| 359 | MY_FILE_BASIC_INFORMATION BasicInfo;
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| 360 | MY_FILE_INTERNAL_INFORMATION InternalInfo;
|
|---|
| 361 | MY_IO_STATUS_BLOCK Ios;
|
|---|
| 362 |
|
|---|
| 363 | Ios.Information = 0;
|
|---|
| 364 | Ios.u.Status = -1;
|
|---|
| 365 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &StdInfo, sizeof(StdInfo), MyFileStandardInformation);
|
|---|
| 366 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 367 | rcNt = Ios.u.Status;
|
|---|
| 368 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 369 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &BasicInfo, sizeof(BasicInfo), MyFileBasicInformation);
|
|---|
| 370 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 371 | rcNt = Ios.u.Status;
|
|---|
| 372 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 373 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, &InternalInfo, sizeof(InternalInfo), MyFileInternalInformation);
|
|---|
| 374 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 375 | rcNt = Ios.u.Status;
|
|---|
| 376 | if (MY_NT_SUCCESS(rcNt) && !pszPath && !pwszPath)
|
|---|
| 377 | {
|
|---|
| 378 | cbNameInfo = 0x10020;
|
|---|
| 379 | pNameInfo = (MY_FILE_NAME_INFORMATION *)alloca(cbNameInfo);
|
|---|
| 380 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pNameInfo, cbNameInfo, MyFileNameInformation);
|
|---|
| 381 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 382 | rcNt = Ios.u.Status;
|
|---|
| 383 | }
|
|---|
| 384 |
|
|---|
| 385 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 386 | {
|
|---|
| 387 | pStat->st_mode = birdFileInfoToMode(hFile, BasicInfo.FileAttributes, pszPath,
|
|---|
| 388 | pNameInfo ? pNameInfo->FileName : pwszPath,
|
|---|
| 389 | pNameInfo ? pNameInfo->FileNameLength
|
|---|
| 390 | : pwszPath ? wcslen(pwszPath) * sizeof(wchar_t) : 0,
|
|---|
| 391 | &pStat->st_dirsymlink);
|
|---|
| 392 | pStat->st_padding0[0] = 0;
|
|---|
| 393 | pStat->st_padding0[1] = 0;
|
|---|
| 394 | pStat->st_size = StdInfo.EndOfFile.QuadPart;
|
|---|
| 395 | birdNtTimeToTimeSpec(BasicInfo.CreationTime.QuadPart, &pStat->st_birthtim);
|
|---|
| 396 | birdNtTimeToTimeSpec(BasicInfo.ChangeTime.QuadPart, &pStat->st_ctim);
|
|---|
| 397 | birdNtTimeToTimeSpec(BasicInfo.LastWriteTime.QuadPart, &pStat->st_mtim);
|
|---|
| 398 | birdNtTimeToTimeSpec(BasicInfo.LastAccessTime.QuadPart, &pStat->st_atim);
|
|---|
| 399 | pStat->st_ino = InternalInfo.IndexNumber.QuadPart;
|
|---|
| 400 | pStat->st_nlink = StdInfo.NumberOfLinks;
|
|---|
| 401 | pStat->st_rdev = 0;
|
|---|
| 402 | pStat->st_uid = 0;
|
|---|
| 403 | pStat->st_gid = 0;
|
|---|
| 404 | pStat->st_padding1 = 0;
|
|---|
| 405 | pStat->st_attribs = BasicInfo.FileAttributes;
|
|---|
| 406 | pStat->st_blksize = 65536;
|
|---|
| 407 | pStat->st_blocks = (StdInfo.AllocationSize.QuadPart + BIRD_STAT_BLOCK_SIZE - 1)
|
|---|
| 408 | / BIRD_STAT_BLOCK_SIZE;
|
|---|
| 409 |
|
|---|
| 410 | /* Get the serial number, reusing the buffer from above. */
|
|---|
| 411 | if (!cbNameInfo)
|
|---|
| 412 | {
|
|---|
| 413 | cbNameInfo = sizeof(MY_FILE_FS_VOLUME_INFORMATION) + 1024;
|
|---|
| 414 | pNameInfo = (MY_FILE_NAME_INFORMATION *)alloca(cbNameInfo);
|
|---|
| 415 | }
|
|---|
| 416 | rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pNameInfo, cbNameInfo, MyFileFsVolumeInformation);
|
|---|
| 417 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 418 | rcNt = Ios.u.Status;
|
|---|
| 419 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 420 | {
|
|---|
| 421 | MY_FILE_FS_VOLUME_INFORMATION const *pVolInfo = (MY_FILE_FS_VOLUME_INFORMATION const *)pNameInfo;
|
|---|
| 422 | pStat->st_dev = pVolInfo->VolumeSerialNumber
|
|---|
| 423 | | (pVolInfo->VolumeCreationTime.QuadPart << 32);
|
|---|
| 424 | rc = 0;
|
|---|
| 425 | }
|
|---|
| 426 | else
|
|---|
| 427 | {
|
|---|
| 428 | pStat->st_dev = 0;
|
|---|
| 429 | rc = birdSetErrnoFromNt(rcNt);
|
|---|
| 430 | }
|
|---|
| 431 | }
|
|---|
| 432 | else
|
|---|
| 433 | rc = birdSetErrnoFromNt(rcNt);
|
|---|
| 434 |
|
|---|
| 435 | #endif
|
|---|
| 436 | return rc;
|
|---|
| 437 | }
|
|---|
| 438 |
|
|---|
| 439 |
|
|---|
| 440 | int birdStatHandle(HANDLE hFile, BirdStat_T *pStat, const char *pszPath)
|
|---|
| 441 | {
|
|---|
| 442 | return birdStatHandle2(hFile, pStat, pszPath, NULL);
|
|---|
| 443 | }
|
|---|
| 444 |
|
|---|
| 445 |
|
|---|
| 446 | /**
|
|---|
| 447 | * Generates a device number from the volume information.
|
|---|
| 448 | *
|
|---|
| 449 | * @returns Device number.
|
|---|
| 450 | * @param pVolInfo Volume information.
|
|---|
| 451 | */
|
|---|
| 452 | unsigned __int64 birdVolumeInfoToDeviceNumber(const MY_FILE_FS_VOLUME_INFORMATION *pVolInfo)
|
|---|
| 453 | {
|
|---|
| 454 | return pVolInfo->VolumeSerialNumber
|
|---|
| 455 | | (pVolInfo->VolumeCreationTime.QuadPart << 32);
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 |
|
|---|
| 459 | /**
|
|---|
| 460 | * Quries the volume information and generates a device number from it.
|
|---|
| 461 | *
|
|---|
| 462 | * @returns NT status code.
|
|---|
| 463 | * @param hFile The file/dir/whatever to query the volume info
|
|---|
| 464 | * and device number for.
|
|---|
| 465 | * @param pVolInfo User provided buffer for volume information.
|
|---|
| 466 | * @param cbVolInfo The size of the buffer.
|
|---|
| 467 | * @param puDevNo Where to return the device number. This is set
|
|---|
| 468 | * to zero on failure.
|
|---|
| 469 | */
|
|---|
| 470 | MY_NTSTATUS birdQueryVolumeDeviceNumber(HANDLE hFile, MY_FILE_FS_VOLUME_INFORMATION *pVolInfo, size_t cbVolInfo,
|
|---|
| 471 | unsigned __int64 *puDevNo)
|
|---|
| 472 | {
|
|---|
| 473 | MY_IO_STATUS_BLOCK Ios;
|
|---|
| 474 | MY_NTSTATUS rcNt;
|
|---|
| 475 |
|
|---|
| 476 | Ios.u.Status = -1;
|
|---|
| 477 | Ios.Information = -1;
|
|---|
| 478 |
|
|---|
| 479 | pVolInfo->VolumeSerialNumber = 0;
|
|---|
| 480 | pVolInfo->VolumeCreationTime.QuadPart = 0;
|
|---|
| 481 |
|
|---|
| 482 | rcNt = g_pfnNtQueryVolumeInformationFile(hFile, &Ios, pVolInfo, (LONG)cbVolInfo, MyFileFsVolumeInformation);
|
|---|
| 483 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 484 | {
|
|---|
| 485 | *puDevNo = birdVolumeInfoToDeviceNumber(pVolInfo);
|
|---|
| 486 | return Ios.u.Status;
|
|---|
| 487 | }
|
|---|
| 488 | *puDevNo = 0;
|
|---|
| 489 | return rcNt;
|
|---|
| 490 | }
|
|---|
| 491 |
|
|---|
| 492 |
|
|---|
| 493 | static int birdStatInternal(HANDLE hRoot, const char *pszPath, BirdStat_T *pStat, int fFollow)
|
|---|
| 494 | {
|
|---|
| 495 | int rc;
|
|---|
| 496 | HANDLE hFile = birdOpenFileEx(hRoot, pszPath,
|
|---|
| 497 | FILE_READ_ATTRIBUTES,
|
|---|
| 498 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 499 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|---|
| 500 | FILE_OPEN,
|
|---|
| 501 | FILE_OPEN_FOR_BACKUP_INTENT | (fFollow ? 0 : FILE_OPEN_REPARSE_POINT),
|
|---|
| 502 | OBJ_CASE_INSENSITIVE);
|
|---|
| 503 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 504 | {
|
|---|
| 505 | rc = birdStatHandle2(hFile, pStat, pszPath, NULL);
|
|---|
| 506 | birdCloseFile(hFile);
|
|---|
| 507 |
|
|---|
| 508 | #if 0
|
|---|
| 509 | {
|
|---|
| 510 | static char s_szPrev[256];
|
|---|
| 511 | size_t cchPath = strlen(pszPath);
|
|---|
| 512 | if (memcmp(s_szPrev, pszPath, cchPath >= 255 ? 255 : cchPath + 1) == 0)
|
|---|
| 513 | fprintf(stderr, "stat: %s -> rc/errno=%d/%u\n", pszPath, rc, errno);
|
|---|
| 514 | else
|
|---|
| 515 | memcpy(s_szPrev, pszPath, cchPath + 1);
|
|---|
| 516 | }
|
|---|
| 517 | #endif
|
|---|
| 518 | //fprintf(stderr, "stat: %s -> rc/errno=%d/%u\n", pszPath, rc, errno);
|
|---|
| 519 | }
|
|---|
| 520 | else
|
|---|
| 521 | {
|
|---|
| 522 | //fprintf(stderr, "stat: %s -> %u\n", pszPath, GetLastError());
|
|---|
| 523 |
|
|---|
| 524 | /*
|
|---|
| 525 | * On things like pagefile.sys we may get sharing violation. We fall
|
|---|
| 526 | * back on directory enumeration for dealing with that.
|
|---|
| 527 | */
|
|---|
| 528 | if ( errno == ETXTBSY
|
|---|
| 529 | && strchr(pszPath, '*') == NULL /* Serious paranoia... */
|
|---|
| 530 | && strchr(pszPath, '?') == NULL)
|
|---|
| 531 | {
|
|---|
| 532 | MY_UNICODE_STRING NameUniStr;
|
|---|
| 533 | hFile = birdOpenParentDir(hRoot, pszPath,
|
|---|
| 534 | FILE_READ_DATA | SYNCHRONIZE,
|
|---|
| 535 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 536 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|---|
| 537 | FILE_OPEN,
|
|---|
| 538 | FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
|
|---|
| 539 | OBJ_CASE_INSENSITIVE,
|
|---|
| 540 | &NameUniStr);
|
|---|
| 541 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 542 | {
|
|---|
| 543 | MY_FILE_ID_FULL_DIR_INFORMATION *pBuf;
|
|---|
| 544 | ULONG cbBuf = sizeof(*pBuf) + NameUniStr.MaximumLength + 1024;
|
|---|
| 545 | MY_IO_STATUS_BLOCK Ios;
|
|---|
| 546 | MY_NTSTATUS rcNt;
|
|---|
| 547 |
|
|---|
| 548 | pBuf = (MY_FILE_ID_FULL_DIR_INFORMATION *)alloca(cbBuf);
|
|---|
| 549 | Ios.u.Status = -1;
|
|---|
| 550 | Ios.Information = -1;
|
|---|
| 551 | rcNt = g_pfnNtQueryDirectoryFile(hFile, NULL, NULL, NULL, &Ios, pBuf, cbBuf,
|
|---|
| 552 | MyFileIdFullDirectoryInformation, FALSE, &NameUniStr, TRUE);
|
|---|
| 553 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 554 | rcNt = Ios.u.Status;
|
|---|
| 555 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 556 | {
|
|---|
| 557 | /*
|
|---|
| 558 | * Convert the data.
|
|---|
| 559 | */
|
|---|
| 560 | birdStatFillFromFileIdFullDirInfo(pStat, pBuf, pszPath);
|
|---|
| 561 |
|
|---|
| 562 | /* Get the serial number, reusing the buffer from above. */
|
|---|
| 563 | rcNt = birdQueryVolumeDeviceNumber(hFile, (MY_FILE_FS_VOLUME_INFORMATION *)pBuf, cbBuf, &pStat->st_dev);
|
|---|
| 564 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 565 | rc = 0;
|
|---|
| 566 | else
|
|---|
| 567 | rc = birdSetErrnoFromNt(rcNt);
|
|---|
| 568 | }
|
|---|
| 569 |
|
|---|
| 570 | birdFreeNtPath(&NameUniStr);
|
|---|
| 571 | birdCloseFile(hFile);
|
|---|
| 572 |
|
|---|
| 573 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 574 | return 0;
|
|---|
| 575 | birdSetErrnoFromNt(rcNt);
|
|---|
| 576 | }
|
|---|
| 577 | }
|
|---|
| 578 | rc = -1;
|
|---|
| 579 | }
|
|---|
| 580 |
|
|---|
| 581 | return rc;
|
|---|
| 582 | }
|
|---|
| 583 |
|
|---|
| 584 |
|
|---|
| 585 | static int birdStatInternalW(HANDLE hRoot, const wchar_t *pwszPath, BirdStat_T *pStat, int fFollow)
|
|---|
| 586 | {
|
|---|
| 587 | int rc;
|
|---|
| 588 | HANDLE hFile = birdOpenFileExW(hRoot, pwszPath,
|
|---|
| 589 | FILE_READ_ATTRIBUTES,
|
|---|
| 590 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 591 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|---|
| 592 | FILE_OPEN,
|
|---|
| 593 | FILE_OPEN_FOR_BACKUP_INTENT | (fFollow ? 0 : FILE_OPEN_REPARSE_POINT),
|
|---|
| 594 | OBJ_CASE_INSENSITIVE);
|
|---|
| 595 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 596 | {
|
|---|
| 597 | rc = birdStatHandle2(hFile, pStat, NULL, pwszPath);
|
|---|
| 598 | birdCloseFile(hFile);
|
|---|
| 599 | }
|
|---|
| 600 | else
|
|---|
| 601 | {
|
|---|
| 602 | /*
|
|---|
| 603 | * On things like pagefile.sys we may get sharing violation. We fall
|
|---|
| 604 | * back on directory enumeration for dealing with that.
|
|---|
| 605 | */
|
|---|
| 606 | if ( errno == ETXTBSY
|
|---|
| 607 | && wcschr(pwszPath, '*') == NULL /* Serious paranoia... */
|
|---|
| 608 | && wcschr(pwszPath, '?') == NULL)
|
|---|
| 609 | {
|
|---|
| 610 | MY_UNICODE_STRING NameUniStr;
|
|---|
| 611 | hFile = birdOpenParentDirW(hRoot, pwszPath,
|
|---|
| 612 | FILE_READ_DATA | SYNCHRONIZE,
|
|---|
| 613 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 614 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|---|
| 615 | FILE_OPEN,
|
|---|
| 616 | FILE_DIRECTORY_FILE | FILE_OPEN_FOR_BACKUP_INTENT | FILE_SYNCHRONOUS_IO_NONALERT,
|
|---|
| 617 | OBJ_CASE_INSENSITIVE,
|
|---|
| 618 | &NameUniStr);
|
|---|
| 619 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 620 | {
|
|---|
| 621 | MY_FILE_ID_FULL_DIR_INFORMATION *pBuf;
|
|---|
| 622 | ULONG cbBuf = sizeof(*pBuf) + NameUniStr.MaximumLength + 1024;
|
|---|
| 623 | MY_IO_STATUS_BLOCK Ios;
|
|---|
| 624 | MY_NTSTATUS rcNt;
|
|---|
| 625 |
|
|---|
| 626 | pBuf = (MY_FILE_ID_FULL_DIR_INFORMATION *)alloca(cbBuf);
|
|---|
| 627 | Ios.u.Status = -1;
|
|---|
| 628 | Ios.Information = -1;
|
|---|
| 629 | rcNt = g_pfnNtQueryDirectoryFile(hFile, NULL, NULL, NULL, &Ios, pBuf, cbBuf,
|
|---|
| 630 | MyFileIdFullDirectoryInformation, FALSE, &NameUniStr, TRUE);
|
|---|
| 631 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 632 | rcNt = Ios.u.Status;
|
|---|
| 633 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 634 | {
|
|---|
| 635 | /*
|
|---|
| 636 | * Convert the data.
|
|---|
| 637 | */
|
|---|
| 638 | birdStatFillFromFileIdFullDirInfo(pStat, pBuf, NULL);
|
|---|
| 639 |
|
|---|
| 640 | /* Get the serial number, reusing the buffer from above. */
|
|---|
| 641 | rcNt = birdQueryVolumeDeviceNumber(hFile, (MY_FILE_FS_VOLUME_INFORMATION *)pBuf, cbBuf, &pStat->st_dev);
|
|---|
| 642 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 643 | rc = 0;
|
|---|
| 644 | else
|
|---|
| 645 | rc = birdSetErrnoFromNt(rcNt);
|
|---|
| 646 | }
|
|---|
| 647 |
|
|---|
| 648 | birdFreeNtPath(&NameUniStr);
|
|---|
| 649 | birdCloseFile(hFile);
|
|---|
| 650 |
|
|---|
| 651 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 652 | return 0;
|
|---|
| 653 | birdSetErrnoFromNt(rcNt);
|
|---|
| 654 | }
|
|---|
| 655 | }
|
|---|
| 656 | rc = -1;
|
|---|
| 657 | }
|
|---|
| 658 |
|
|---|
| 659 | return rc;
|
|---|
| 660 | }
|
|---|
| 661 |
|
|---|
| 662 |
|
|---|
| 663 | /**
|
|---|
| 664 | * Implements UNIX fstat().
|
|---|
| 665 | */
|
|---|
| 666 | int birdStatOnFd(int fd, BirdStat_T *pStat)
|
|---|
| 667 | {
|
|---|
| 668 | int rc;
|
|---|
| 669 | HANDLE hFile = (HANDLE)_get_osfhandle(fd);
|
|---|
| 670 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 671 | {
|
|---|
| 672 | DWORD fFileType;
|
|---|
| 673 |
|
|---|
| 674 | birdResolveImports();
|
|---|
| 675 |
|
|---|
| 676 | SetLastError(NO_ERROR);
|
|---|
| 677 | fFileType = GetFileType(hFile) & ~FILE_TYPE_REMOTE;
|
|---|
| 678 | switch (fFileType)
|
|---|
| 679 | {
|
|---|
| 680 | case FILE_TYPE_DISK:
|
|---|
| 681 | rc = birdStatHandle2(hFile, pStat, NULL, NULL);
|
|---|
| 682 | break;
|
|---|
| 683 |
|
|---|
| 684 | case FILE_TYPE_CHAR:
|
|---|
| 685 | case FILE_TYPE_PIPE:
|
|---|
| 686 | if (fFileType == FILE_TYPE_PIPE)
|
|---|
| 687 | pStat->st_mode = S_IFIFO | 0666;
|
|---|
| 688 | else
|
|---|
| 689 | pStat->st_mode = S_IFCHR | 0666;
|
|---|
| 690 | pStat->st_padding0[0] = 0;
|
|---|
| 691 | pStat->st_padding0[1] = 0;
|
|---|
| 692 | pStat->st_size = 0;
|
|---|
| 693 | pStat->st_atim.tv_sec = 0;
|
|---|
| 694 | pStat->st_atim.tv_nsec = 0;
|
|---|
| 695 | pStat->st_mtim.tv_sec = 0;
|
|---|
| 696 | pStat->st_mtim.tv_nsec = 0;
|
|---|
| 697 | pStat->st_ctim.tv_sec = 0;
|
|---|
| 698 | pStat->st_ctim.tv_nsec = 0;
|
|---|
| 699 | pStat->st_birthtim.tv_sec = 0;
|
|---|
| 700 | pStat->st_birthtim.tv_nsec = 0;
|
|---|
| 701 | pStat->st_ino = 0;
|
|---|
| 702 | pStat->st_dev = 0;
|
|---|
| 703 | pStat->st_rdev = 0;
|
|---|
| 704 | pStat->st_uid = 0;
|
|---|
| 705 | pStat->st_gid = 0;
|
|---|
| 706 | pStat->st_padding1 = 0;
|
|---|
| 707 | pStat->st_attribs = fFileType == FILE_TYPE_PIPE ? FILE_ATTRIBUTE_NORMAL : FILE_ATTRIBUTE_DEVICE;
|
|---|
| 708 | pStat->st_blksize = 512;
|
|---|
| 709 | pStat->st_blocks = 0;
|
|---|
| 710 | if (fFileType == FILE_TYPE_PIPE)
|
|---|
| 711 | {
|
|---|
| 712 | DWORD cbAvail;
|
|---|
| 713 | if (PeekNamedPipe(hFile, NULL, 0, NULL, &cbAvail, NULL))
|
|---|
| 714 | pStat->st_size = cbAvail;
|
|---|
| 715 | }
|
|---|
| 716 | rc = 0;
|
|---|
| 717 | break;
|
|---|
| 718 |
|
|---|
| 719 | case FILE_TYPE_UNKNOWN:
|
|---|
| 720 | default:
|
|---|
| 721 | if (GetLastError() == NO_ERROR)
|
|---|
| 722 | rc = birdSetErrnoToBadFileNo();
|
|---|
| 723 | else
|
|---|
| 724 | rc = birdSetErrnoFromWin32(GetLastError());
|
|---|
| 725 | break;
|
|---|
| 726 | }
|
|---|
| 727 | }
|
|---|
| 728 | else
|
|---|
| 729 | rc = -1;
|
|---|
| 730 | return rc;
|
|---|
| 731 | }
|
|---|
| 732 |
|
|---|
| 733 |
|
|---|
| 734 | /**
|
|---|
| 735 | * Special case that only gets the file size and nothing else.
|
|---|
| 736 | */
|
|---|
| 737 | int birdStatOnFdJustSize(int fd, __int64 *pcbFile)
|
|---|
| 738 | {
|
|---|
| 739 | int rc;
|
|---|
| 740 | HANDLE hFile = (HANDLE)_get_osfhandle(fd);
|
|---|
| 741 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 742 | {
|
|---|
| 743 | LARGE_INTEGER cbLocal;
|
|---|
| 744 | if (GetFileSizeEx(hFile, &cbLocal))
|
|---|
| 745 | {
|
|---|
| 746 | *pcbFile = cbLocal.QuadPart;
|
|---|
| 747 | rc = 0;
|
|---|
| 748 | }
|
|---|
| 749 | else
|
|---|
| 750 | {
|
|---|
| 751 | BirdStat_T Stat;
|
|---|
| 752 | rc = birdStatOnFd(fd, &Stat);
|
|---|
| 753 | if (rc == 0)
|
|---|
| 754 | *pcbFile = Stat.st_size;
|
|---|
| 755 | }
|
|---|
| 756 | }
|
|---|
| 757 | else
|
|---|
| 758 | rc = -1;
|
|---|
| 759 | return rc;
|
|---|
| 760 | }
|
|---|
| 761 |
|
|---|
| 762 |
|
|---|
| 763 | /**
|
|---|
| 764 | * Implements UNIX stat().
|
|---|
| 765 | */
|
|---|
| 766 | int birdStatFollowLink(const char *pszPath, BirdStat_T *pStat)
|
|---|
| 767 | {
|
|---|
| 768 | return birdStatInternal(NULL, pszPath, pStat, 1 /*fFollow*/);
|
|---|
| 769 | }
|
|---|
| 770 |
|
|---|
| 771 |
|
|---|
| 772 | /**
|
|---|
| 773 | * Implements UNIX stat().
|
|---|
| 774 | */
|
|---|
| 775 | int birdStatFollowLinkW(const wchar_t *pwszPath, BirdStat_T *pStat)
|
|---|
| 776 | {
|
|---|
| 777 | return birdStatInternalW(NULL, pwszPath, pStat, 1 /*fFollow*/);
|
|---|
| 778 | }
|
|---|
| 779 |
|
|---|
| 780 |
|
|---|
| 781 | /**
|
|---|
| 782 | * Implements UNIX lstat().
|
|---|
| 783 | */
|
|---|
| 784 | int birdStatOnLink(const char *pszPath, BirdStat_T *pStat)
|
|---|
| 785 | {
|
|---|
| 786 | return birdStatInternal(NULL, pszPath, pStat, 0 /*fFollow*/);
|
|---|
| 787 | }
|
|---|
| 788 |
|
|---|
| 789 |
|
|---|
| 790 | /**
|
|---|
| 791 | * Implements UNIX lstat().
|
|---|
| 792 | */
|
|---|
| 793 | int birdStatOnLinkW(const wchar_t *pwszPath, BirdStat_T *pStat)
|
|---|
| 794 | {
|
|---|
| 795 | return birdStatInternalW(NULL, pwszPath, pStat, 0 /*fFollow*/);
|
|---|
| 796 | }
|
|---|
| 797 |
|
|---|
| 798 |
|
|---|
| 799 | /**
|
|---|
| 800 | * Implements an API like UNIX fstatat().
|
|---|
| 801 | *
|
|---|
| 802 | * @returns 0 on success, -1 and errno on failure.
|
|---|
| 803 | * @param hRoot NT handle pwszPath is relative to.
|
|---|
| 804 | * @param pszPath The path.
|
|---|
| 805 | * @param pStat Where to return stats.
|
|---|
| 806 | * @param fFollowLink Whether to follow links.
|
|---|
| 807 | */
|
|---|
| 808 | int birdStatAt(HANDLE hRoot, const char *pszPath, BirdStat_T *pStat, int fFollowLink)
|
|---|
| 809 | {
|
|---|
| 810 | return birdStatInternal(hRoot, pszPath, pStat, fFollowLink != 0);
|
|---|
| 811 | }
|
|---|
| 812 |
|
|---|
| 813 |
|
|---|
| 814 | /**
|
|---|
| 815 | * Implements an API like UNIX fstatat().
|
|---|
| 816 | *
|
|---|
| 817 | * @returns 0 on success, -1 and errno on failure.
|
|---|
| 818 | * @param hRoot NT handle pwszPath is relative to.
|
|---|
| 819 | * @param pwszPath The path.
|
|---|
| 820 | * @param pStat Where to return stats.
|
|---|
| 821 | * @param fFollowLink Whether to follow links.
|
|---|
| 822 | */
|
|---|
| 823 | int birdStatAtW(HANDLE hRoot, const wchar_t *pwszPath, BirdStat_T *pStat, int fFollowLink)
|
|---|
| 824 | {
|
|---|
| 825 | return birdStatInternalW(hRoot, pwszPath, pStat, fFollowLink != 0);
|
|---|
| 826 | }
|
|---|
| 827 |
|
|---|
| 828 |
|
|---|
| 829 | /**
|
|---|
| 830 | * Internal worker for birdStatModTimeOnly.
|
|---|
| 831 | */
|
|---|
| 832 | static int birdStatOnlyInternal(const char *pszPath, int fFollowLink, MY_FILE_BASIC_INFORMATION *pBasicInfo)
|
|---|
| 833 | {
|
|---|
| 834 | int rc;
|
|---|
| 835 | HANDLE hFile = birdOpenFile(pszPath,
|
|---|
| 836 | FILE_READ_ATTRIBUTES,
|
|---|
| 837 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 838 | FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
|
|---|
| 839 | FILE_OPEN,
|
|---|
| 840 | FILE_OPEN_FOR_BACKUP_INTENT | (fFollowLink ? 0 : FILE_OPEN_REPARSE_POINT),
|
|---|
| 841 | OBJ_CASE_INSENSITIVE);
|
|---|
| 842 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 843 | {
|
|---|
| 844 | MY_NTSTATUS rcNt = 0;
|
|---|
| 845 | MY_IO_STATUS_BLOCK Ios;
|
|---|
| 846 | Ios.Information = 0;
|
|---|
| 847 | Ios.u.Status = -1;
|
|---|
| 848 |
|
|---|
| 849 | if (pBasicInfo)
|
|---|
| 850 | {
|
|---|
| 851 | rcNt = g_pfnNtQueryInformationFile(hFile, &Ios, pBasicInfo, sizeof(*pBasicInfo), MyFileBasicInformation);
|
|---|
| 852 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 853 | rcNt = Ios.u.Status;
|
|---|
| 854 | }
|
|---|
| 855 | birdCloseFile(hFile);
|
|---|
| 856 |
|
|---|
| 857 | if (MY_NT_SUCCESS(rcNt))
|
|---|
| 858 | rc = 0;
|
|---|
| 859 | else
|
|---|
| 860 | {
|
|---|
| 861 | birdSetErrnoFromNt(rcNt);
|
|---|
| 862 | rc = -1;
|
|---|
| 863 | }
|
|---|
| 864 | }
|
|---|
| 865 | else
|
|---|
| 866 | {
|
|---|
| 867 | //fprintf(stderr, "stat: %s -> %u\n", pszPath, GetLastError());
|
|---|
| 868 |
|
|---|
| 869 | /* On things like pagefile.sys we may get sharing violation. */
|
|---|
| 870 | if (GetLastError() == ERROR_SHARING_VIOLATION)
|
|---|
| 871 | {
|
|---|
| 872 | /** @todo Fall back on the parent directory enum if we run into a sharing
|
|---|
| 873 | * violation. */
|
|---|
| 874 | }
|
|---|
| 875 | rc = -1;
|
|---|
| 876 | }
|
|---|
| 877 | return rc;
|
|---|
| 878 | }
|
|---|
| 879 |
|
|---|
| 880 |
|
|---|
| 881 | /**
|
|---|
| 882 | * Special function for getting the modification time.
|
|---|
| 883 | */
|
|---|
| 884 | int birdStatModTimeOnly(const char *pszPath, BirdTimeSpec_T *pTimeSpec, int fFollowLink)
|
|---|
| 885 | {
|
|---|
| 886 | MY_FILE_BASIC_INFORMATION BasicInfo;
|
|---|
| 887 | int rc = birdStatOnlyInternal(pszPath, fFollowLink, &BasicInfo);
|
|---|
| 888 | if (!rc)
|
|---|
| 889 | birdNtTimeToTimeSpec(BasicInfo.LastWriteTime.QuadPart, pTimeSpec);
|
|---|
| 890 | return rc;
|
|---|
| 891 | }
|
|---|
| 892 |
|
|---|
| 893 |
|
|---|
| 894 |
|
|---|