1 | /* $Id: shfile.c 3465 2020-09-15 19:46:48Z bird $ */
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2 | /** @file
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3 | *
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4 | * File management.
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5 | *
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6 | * Copyright (c) 2007-2010 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
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7 | *
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8 | *
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9 | * This file is part of kBuild.
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10 | *
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11 | * kBuild is free software; you can redistribute it and/or modify
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12 | * it under the terms of the GNU General Public License as published by
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13 | * the Free Software Foundation; either version 2 of the License, or
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14 | * (at your option) any later version.
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15 | *
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16 | * kBuild is distributed in the hope that it will be useful,
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | * GNU General Public License for more details.
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20 | *
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21 | * You should have received a copy of the GNU General Public License
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22 | * along with kBuild; if not, write to the Free Software
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23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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24 | *
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25 | */
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26 |
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27 | /*******************************************************************************
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28 | * Header Files *
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29 | *******************************************************************************/
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30 | #include "shfile.h"
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31 | #include "shinstance.h" /* TRACE2 */
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32 | #include <stdlib.h>
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33 | #include <stdio.h>
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34 | #include <string.h>
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35 | #include <assert.h>
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36 |
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37 | #if K_OS == K_OS_WINDOWS
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38 | # include <limits.h>
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39 | # ifndef PIPE_BUF
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40 | # define PIPE_BUF 512
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41 | # endif
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42 | # include <ntstatus.h>
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43 | # define WIN32_NO_STATUS
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44 | # include <Windows.h>
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45 | # if !defined(_WIN32_WINNT)
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46 | # define _WIN32_WINNT 0x0502 /* Windows Server 2003 */
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47 | # endif
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48 | # include <winternl.h> //NTSTATUS
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49 | #else
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50 | # include <unistd.h>
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51 | # include <fcntl.h>
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52 | # include <dirent.h>
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53 | #endif
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54 |
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55 |
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56 | /*******************************************************************************
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57 | * Defined Constants And Macros *
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58 | *******************************************************************************/
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59 | /** @def SHFILE_IN_USE
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60 | * Whether the file descriptor table stuff is actually in use or not.
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61 | */
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62 | #if K_OS == K_OS_WINDOWS \
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63 | || K_OS == K_OS_OPENBSD /* because of ugly pthread library pipe hacks */ \
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64 | || !defined(SH_FORKED_MODE)
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65 | # define SHFILE_IN_USE
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66 | #endif
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67 | /** The max file table size. */
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68 | #define SHFILE_MAX 1024
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69 | /** The file table growth rate. */
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70 | #define SHFILE_GROW 64
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71 | /** The min native unix file descriptor. */
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72 | #define SHFILE_UNIX_MIN_FD 32
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73 | /** The path buffer size we use. */
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74 | #define SHFILE_MAX_PATH 4096
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75 |
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76 | /** Set errno and return. Doing a trace in debug build. */
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77 | #define RETURN_ERROR(rc, err, msg) \
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78 | do { \
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79 | TRACE2((NULL, "%s: " ## msg ## " - returning %d / %d\n", __FUNCTION__, (rc), (err))); \
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80 | errno = (err); \
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81 | return (rc); \
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82 | } while (0)
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83 |
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84 | #if K_OS == K_OS_WINDOWS
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85 | /* See msdos.h for description. */
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86 | # define FOPEN 0x01
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87 | # define FEOFLAG 0x02
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88 | # define FCRLF 0x04
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89 | # define FPIPE 0x08
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90 | # define FNOINHERIT 0x10
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91 | # define FAPPEND 0x20
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92 | # define FDEV 0x40
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93 | # define FTEXT 0x80
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94 |
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95 | # define MY_ObjectBasicInformation 0
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96 | # define MY_FileNamesInformation 12
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97 |
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98 | typedef struct
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99 | {
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100 | ULONG Attributes;
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101 | ACCESS_MASK GrantedAccess;
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102 | ULONG HandleCount;
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103 | ULONG PointerCount;
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104 | ULONG PagedPoolUsage;
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105 | ULONG NonPagedPoolUsage;
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106 | ULONG Reserved[3];
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107 | ULONG NameInformationLength;
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108 | ULONG TypeInformationLength;
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109 | ULONG SecurityDescriptorLength;
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110 | LARGE_INTEGER CreateTime;
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111 | } MY_OBJECT_BASIC_INFORMATION;
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112 |
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113 | #if 0
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114 | typedef struct
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115 | {
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116 | union
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117 | {
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118 | LONG Status;
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119 | PVOID Pointer;
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120 | };
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121 | ULONG_PTR Information;
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122 | } MY_IO_STATUS_BLOCK;
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123 | #else
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124 | typedef IO_STATUS_BLOCK MY_IO_STATUS_BLOCK;
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125 | #endif
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126 | typedef MY_IO_STATUS_BLOCK *PMY_IO_STATUS_BLOCK;
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127 |
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128 | typedef struct
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129 | {
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130 | ULONG NextEntryOffset;
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131 | ULONG FileIndex;
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132 | ULONG FileNameLength;
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133 | WCHAR FileName[1];
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134 | } MY_FILE_NAMES_INFORMATION, *PMY_FILE_NAMES_INFORMATION;
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135 |
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136 | typedef NTSTATUS (NTAPI * PFN_NtQueryObject)(HANDLE, int, void *, size_t, size_t *);
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137 | typedef NTSTATUS (NTAPI * PFN_NtQueryDirectoryFile)(HANDLE, HANDLE, void *, void *, PMY_IO_STATUS_BLOCK, void *,
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138 | ULONG, int, int, PUNICODE_STRING, int);
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139 | typedef NTSTATUS (NTAPI * PFN_RtlUnicodeStringToAnsiString)(PANSI_STRING, PCUNICODE_STRING, int);
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140 |
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141 |
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142 | #endif /* K_OS_WINDOWS */
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143 |
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144 |
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145 | /*******************************************************************************
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146 | * Global Variables *
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147 | *******************************************************************************/
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148 | #if K_OS == K_OS_WINDOWS
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149 | static int g_shfile_globals_initialized = 0;
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150 | static PFN_NtQueryObject g_pfnNtQueryObject = NULL;
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151 | static PFN_NtQueryDirectoryFile g_pfnNtQueryDirectoryFile = NULL;
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152 | static PFN_RtlUnicodeStringToAnsiString g_pfnRtlUnicodeStringToAnsiString = NULL;
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153 | #endif /* K_OS_WINDOWS */
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154 |
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155 |
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156 | #ifdef SHFILE_IN_USE
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157 |
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158 | # ifdef DEBUG
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159 | # if K_OS == K_OS_WINDOWS
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160 | static KU64 shfile_nano_ts(void)
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161 | {
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162 | static KBOOL volatile s_has_factor = K_FALSE;
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163 | static double volatile s_factor;
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164 | double factor;
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165 | LARGE_INTEGER now;
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166 | if (s_has_factor)
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167 | factor = s_factor;
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168 | else
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169 | {
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170 | QueryPerformanceFrequency(&now);
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171 | s_factor = factor = (double)1000000000.0 / now.QuadPart;
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172 | s_has_factor = K_TRUE;
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173 | }
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174 | QueryPerformanceCounter(&now);
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175 | return (KU64)(now.QuadPart * factor);
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176 | }
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177 | # endif /* K_OS_WINDOWS */
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178 | # endif /* DEBUG */
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179 |
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180 | /**
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181 | * Close the specified native handle.
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182 | *
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183 | * @param native The native file handle.
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184 | * @param file The file table entry if available.
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185 | */
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186 | static void shfile_native_close(intptr_t native, shfile *file)
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187 | {
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188 | # if K_OS == K_OS_WINDOWS
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189 | # ifdef DEBUG
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190 | KU64 ns = shfile_nano_ts();
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191 | BOOL fRc2 = FlushFileBuffers((HANDLE)native);
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192 | KU64 ns2 = shfile_nano_ts();
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193 | BOOL fRc = CloseHandle((HANDLE)native);
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194 | assert(fRc); K_NOREF(fRc);
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195 | ns2 -= ns;
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196 | ns = shfile_nano_ts() - ns;
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197 | if (ns > 1000000)
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198 | TRACE2((NULL, "shfile_native_close: %u ns (%u) %p oflags=%#x %s\n",
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199 | ns, ns2, native, file ? file->oflags : 0, file ? file->dbgname : NULL));
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200 | # else
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201 | BOOL fRc = CloseHandle((HANDLE)native);
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202 | assert(fRc); K_NOREF(fRc);
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203 | # endif
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204 | # else
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205 | int s = errno;
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206 | close(native);
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207 | errno = s;
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208 | # endif
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209 | K_NOREF(file);
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210 | }
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211 |
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212 | /**
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213 | * Grows the descriptor table, making sure that it can hold @a fdMin,
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214 | *
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215 | * @returns The max(fdMin, fdFirstNew) on success, -1 on failure.
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216 | * @param pfdtab The table to grow.
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217 | * @param fdMin Grow to include this index.
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218 | */
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219 | static int shfile_grow_tab_locked(shfdtab *pfdtab, int fdMin)
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220 | {
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221 | /*
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222 | * Grow the descriptor table.
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223 | */
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224 | int fdRet = -1;
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225 | shfile *new_tab;
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226 | int new_size = pfdtab->size + SHFILE_GROW;
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227 | while (new_size < fdMin)
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228 | new_size += SHFILE_GROW;
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229 | new_tab = sh_realloc(shthread_get_shell(), pfdtab->tab, new_size * sizeof(shfile));
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230 | if (new_tab)
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231 | {
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232 | int i;
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233 | for (i = pfdtab->size; i < new_size; i++)
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234 | {
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235 | new_tab[i].fd = -1;
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236 | new_tab[i].oflags = 0;
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237 | new_tab[i].shflags = 0;
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238 | new_tab[i].native = -1;
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239 | # ifdef DEBUG
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240 | new_tab[i].dbgname = NULL;
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241 | # endif
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242 | }
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243 |
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244 | fdRet = pfdtab->size;
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245 | if (fdRet < fdMin)
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246 | fdRet = fdMin;
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247 |
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248 | pfdtab->tab = new_tab;
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249 | pfdtab->size = new_size;
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250 | }
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251 |
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252 | return fdRet;
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253 | }
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254 |
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255 | /**
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256 | * Inserts the file into the descriptor table.
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257 | *
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258 | * If we're out of memory and cannot extend the table, we'll close the
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259 | * file, set errno to EMFILE and return -1.
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260 | *
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261 | * @returns The file descriptor number. -1 and errno on failure.
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262 | * @param pfdtab The file descriptor table.
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263 | * @param native The native file handle.
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264 | * @param oflags The flags the it was opened/created with.
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265 | * @param shflags The shell file flags.
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266 | * @param fdMin The minimum file descriptor number, pass -1 if any is ok.
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267 | * @param who Who we're doing this for (for logging purposes).
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268 | * @param dbgname The filename, if applicable/available.
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269 | */
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270 | static int shfile_insert(shfdtab *pfdtab, intptr_t native, unsigned oflags, unsigned shflags, int fdMin,
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271 | const char *who, const char *dbgname)
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272 | {
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273 | shmtxtmp tmp;
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274 | int fd;
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275 | int i;
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276 |
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277 | /*
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278 | * Fend of bad stuff.
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279 | */
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280 | if (fdMin >= SHFILE_MAX)
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281 | {
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282 | TRACE2((NULL, "shfile_insert: fdMin=%d is out of bounds; native=%p %s\n", fdMin, native, dbgname));
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283 | shfile_native_close(native, NULL);
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284 | errno = EMFILE;
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285 | return -1;
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286 | }
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287 | # if K_OS != K_OS_WINDOWS
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288 | if (fcntl((int)native, F_SETFD, fcntl((int)native, F_GETFD, 0) | FD_CLOEXEC) == -1)
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289 | {
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290 | int e = errno;
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291 | TRACE2((NULL, "shfile_insert: F_SETFD failed %d; native=%p %s\n", e, native, dbgname));
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292 | close((int)native);
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293 | errno = e;
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294 | return -1;
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295 | }
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296 | # endif
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297 |
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298 | shmtx_enter(&pfdtab->mtx, &tmp);
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299 |
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300 | /*
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301 | * Search for a fitting unused location.
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302 | */
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303 | fd = -1;
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304 | for (i = fdMin >= 0 ? fdMin : 0; (unsigned)i < pfdtab->size; i++)
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305 | if (pfdtab->tab[i].fd == -1)
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306 | {
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307 | fd = i;
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308 | break;
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309 | }
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310 | if (fd == -1)
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311 | fd = shfile_grow_tab_locked(pfdtab, fdMin);
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312 |
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313 | /*
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314 | * Fill in the entry if we've found one.
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315 | */
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316 | if (fd != -1)
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317 | {
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318 | pfdtab->tab[fd].fd = fd;
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319 | pfdtab->tab[fd].oflags = oflags;
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320 | pfdtab->tab[fd].shflags = shflags;
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321 | pfdtab->tab[fd].native = native;
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322 | #ifdef DEBUG
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323 | pfdtab->tab[fd].dbgname = dbgname ? sh_strdup(NULL, dbgname) : NULL;
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324 | #endif
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325 | TRACE2((NULL, "shfile_insert: #%d: native=%p oflags=%#x shflags=%#x %s\n", fd, native, oflags, shflags, dbgname));
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326 | }
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327 | else
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328 | shfile_native_close(native, NULL);
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329 |
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330 | shmtx_leave(&pfdtab->mtx, &tmp);
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331 |
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332 | if (fd == -1)
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333 | errno = EMFILE;
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334 | (void)who;
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335 | return fd;
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336 | }
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337 |
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338 | # if K_OS != K_OS_WINDOWS
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339 | /**
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340 | * Makes a copy of the native file, closes the original, and inserts the copy
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341 | * into the descriptor table.
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342 | *
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343 | * If we're out of memory and cannot extend the table, we'll close the
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344 | * file, set errno to EMFILE and return -1.
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345 | *
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346 | * @returns The file descriptor number. -1 and errno on failure.
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347 | * @param pfdtab The file descriptor table.
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348 | * @param pnative The native file handle on input, -1 on output.
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349 | * @param oflags The flags the it was opened/created with.
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350 | * @param shflags The shell file flags.
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351 | * @param fdMin The minimum file descriptor number, pass -1 if any is ok.
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352 | * @param who Who we're doing this for (for logging purposes).
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353 | * @param dbgname The filename, if applicable/available.
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354 | */
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355 | static int shfile_copy_insert_and_close(shfdtab *pfdtab, int *pnative, unsigned oflags, unsigned shflags, int fdMin,
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356 | const char *who, const char *dbgname)
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357 | {
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358 | int fd = -1;
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359 | int s = errno;
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360 | int native_copy = fcntl(*pnative, F_DUPFD, SHFILE_UNIX_MIN_FD);
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361 | close(*pnative);
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362 | *pnative = -1;
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363 | errno = s;
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364 |
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365 | if (native_copy != -1)
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366 | fd = shfile_insert(pfdtab, native_copy, oflags, shflags, fdMin, who, dbgname);
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367 | return fd;
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368 | }
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369 | # endif /* !K_OS_WINDOWS */
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370 |
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371 | /**
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372 | * Gets a file descriptor and lock the file descriptor table.
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373 | *
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374 | * @returns Pointer to the file and table ownership on success,
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375 | * NULL and errno set to EBADF on failure.
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376 | * @param pfdtab The file descriptor table.
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377 | * @param fd The file descriptor number.
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378 | * @param ptmp See shmtx_enter.
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379 | */
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380 | static shfile *shfile_get(shfdtab *pfdtab, int fd, shmtxtmp *ptmp)
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381 | {
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382 | shfile *file = NULL;
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383 | if ( fd >= 0
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384 | && (unsigned)fd < pfdtab->size)
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385 | {
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386 | shmtx_enter(&pfdtab->mtx, ptmp);
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387 | if ((unsigned)fd < pfdtab->size
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388 | && pfdtab->tab[fd].fd != -1)
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389 | file = &pfdtab->tab[fd];
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390 | else
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391 | shmtx_leave(&pfdtab->mtx, ptmp);
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392 | }
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393 | if (!file)
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394 | errno = EBADF;
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395 | return file;
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396 | }
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397 |
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398 | /**
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399 | * Puts back a file descriptor and releases the table ownership.
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400 | *
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401 | * @param pfdtab The file descriptor table.
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402 | * @param file The file.
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403 | * @param ptmp See shmtx_leave.
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404 | */
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405 | static void shfile_put(shfdtab *pfdtab, shfile *file, shmtxtmp *ptmp)
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406 | {
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407 | shmtx_leave(&pfdtab->mtx, ptmp);
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408 | assert(file);
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409 | (void)file;
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410 | }
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411 |
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412 | /**
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413 | * Constructs a path from the current directory and the passed in path.
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414 | *
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415 | * @returns 0 on success, -1 and errno set to ENAMETOOLONG or EINVAL on failure.
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416 | *
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417 | * @param pfdtab The file descriptor table
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418 | * @param path The path the caller supplied.
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419 | * @param buf Where to put the path. This is assumed to be SHFILE_MAX_PATH
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420 | * chars in size.
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421 | */
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422 | int shfile_make_path(shfdtab *pfdtab, const char *path, char *buf)
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423 | {
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424 | size_t path_len = strlen(path);
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425 | if (path_len == 0)
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426 | {
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427 | errno = EINVAL;
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428 | return -1;
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429 | }
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430 | if (path_len >= SHFILE_MAX_PATH)
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431 | {
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432 | errno = ENAMETOOLONG;
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433 | return -1;
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434 | }
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435 | if ( *path == '/'
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436 | # if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
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437 | || *path == '\\'
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438 | || ( *path
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439 | && path[1] == ':'
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440 | && ( (*path >= 'A' && *path <= 'Z')
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441 | || (*path >= 'a' && *path <= 'z')))
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442 | # endif
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443 | )
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444 | {
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445 | memcpy(buf, path, path_len + 1);
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446 | }
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447 | else
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448 | {
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449 | size_t cwd_len;
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450 | shmtxtmp tmp;
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451 |
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452 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
453 |
|
---|
454 | cwd_len = strlen(pfdtab->cwd);
|
---|
455 | memcpy(buf, pfdtab->cwd, cwd_len);
|
---|
456 |
|
---|
457 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
458 |
|
---|
459 | if (cwd_len + path_len + 1 >= SHFILE_MAX_PATH)
|
---|
460 | {
|
---|
461 | errno = ENAMETOOLONG;
|
---|
462 | return -1;
|
---|
463 | }
|
---|
464 | if ( !cwd_len
|
---|
465 | || buf[cwd_len - 1] != '/')
|
---|
466 | buf[cwd_len++] = '/';
|
---|
467 | memcpy(buf + cwd_len, path, path_len + 1);
|
---|
468 | }
|
---|
469 |
|
---|
470 | # if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
|
---|
471 | if (!strcmp(buf, "/dev/null"))
|
---|
472 | strcpy(buf, "NUL");
|
---|
473 | # endif
|
---|
474 | return 0;
|
---|
475 | }
|
---|
476 |
|
---|
477 | # if K_OS == K_OS_WINDOWS
|
---|
478 |
|
---|
479 | /**
|
---|
480 | * Adjusts the file name if it ends with a trailing directory slash.
|
---|
481 | *
|
---|
482 | * Windows APIs doesn't like trailing slashes.
|
---|
483 | *
|
---|
484 | * @returns 1 if it has a directory slash, 0 if not.
|
---|
485 | *
|
---|
486 | * @param abspath The path to adjust (SHFILE_MAX_PATH).
|
---|
487 | */
|
---|
488 | static int shfile_trailing_slash_hack(char *abspath)
|
---|
489 | {
|
---|
490 | /*
|
---|
491 | * Anything worth adjust here?
|
---|
492 | */
|
---|
493 | size_t path_len = strlen(abspath);
|
---|
494 | if ( path_len == 0
|
---|
495 | || ( abspath[path_len - 1] != '/'
|
---|
496 | # if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
|
---|
497 | && abspath[path_len - 1] != '\\'
|
---|
498 | # endif
|
---|
499 | )
|
---|
500 | )
|
---|
501 | return 0;
|
---|
502 |
|
---|
503 | /*
|
---|
504 | * Ok, make the adjustment.
|
---|
505 | */
|
---|
506 | if (path_len + 2 <= SHFILE_MAX_PATH)
|
---|
507 | {
|
---|
508 | /* Add a '.' to the end. */
|
---|
509 | abspath[path_len++] = '.';
|
---|
510 | abspath[path_len] = '\0';
|
---|
511 | }
|
---|
512 | else
|
---|
513 | {
|
---|
514 | /* No space for a dot, remove the slash if it's alone or just remove
|
---|
515 | one and add a dot like above. */
|
---|
516 | if ( abspath[path_len - 2] != '/'
|
---|
517 | # if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
|
---|
518 | && abspath[path_len - 2] != '\\'
|
---|
519 | # endif
|
---|
520 | )
|
---|
521 | abspath[--path_len] = '\0';
|
---|
522 | else
|
---|
523 | abspath[path_len - 1] = '.';
|
---|
524 | }
|
---|
525 |
|
---|
526 | return 1;
|
---|
527 | }
|
---|
528 |
|
---|
529 |
|
---|
530 | /**
|
---|
531 | * Converts a DOS(/Windows) error code to errno,
|
---|
532 | * assigning it to errno.
|
---|
533 | *
|
---|
534 | * @returns -1
|
---|
535 | * @param err The DOS error.
|
---|
536 | */
|
---|
537 | static int shfile_dos2errno(int err)
|
---|
538 | {
|
---|
539 | switch (err)
|
---|
540 | {
|
---|
541 | case ERROR_BAD_ENVIRONMENT: errno = E2BIG; break;
|
---|
542 | case ERROR_ACCESS_DENIED: errno = EACCES; break;
|
---|
543 | case ERROR_CURRENT_DIRECTORY: errno = EACCES; break;
|
---|
544 | case ERROR_LOCK_VIOLATION: errno = EACCES; break;
|
---|
545 | case ERROR_NETWORK_ACCESS_DENIED: errno = EACCES; break;
|
---|
546 | case ERROR_CANNOT_MAKE: errno = EACCES; break;
|
---|
547 | case ERROR_FAIL_I24: errno = EACCES; break;
|
---|
548 | case ERROR_DRIVE_LOCKED: errno = EACCES; break;
|
---|
549 | case ERROR_SEEK_ON_DEVICE: errno = EACCES; break;
|
---|
550 | case ERROR_NOT_LOCKED: errno = EACCES; break;
|
---|
551 | case ERROR_LOCK_FAILED: errno = EACCES; break;
|
---|
552 | case ERROR_NO_PROC_SLOTS: errno = EAGAIN; break;
|
---|
553 | case ERROR_MAX_THRDS_REACHED: errno = EAGAIN; break;
|
---|
554 | case ERROR_NESTING_NOT_ALLOWED: errno = EAGAIN; break;
|
---|
555 | case ERROR_INVALID_HANDLE: errno = EBADF; break;
|
---|
556 | case ERROR_INVALID_TARGET_HANDLE: errno = EBADF; break;
|
---|
557 | case ERROR_DIRECT_ACCESS_HANDLE: errno = EBADF; break;
|
---|
558 | case ERROR_WAIT_NO_CHILDREN: errno = ECHILD; break;
|
---|
559 | case ERROR_CHILD_NOT_COMPLETE: errno = ECHILD; break;
|
---|
560 | case ERROR_FILE_EXISTS: errno = EEXIST; break;
|
---|
561 | case ERROR_ALREADY_EXISTS: errno = EEXIST; break;
|
---|
562 | case ERROR_INVALID_FUNCTION: errno = EINVAL; break;
|
---|
563 | case ERROR_INVALID_ACCESS: errno = EINVAL; break;
|
---|
564 | case ERROR_INVALID_DATA: errno = EINVAL; break;
|
---|
565 | case ERROR_INVALID_PARAMETER: errno = EINVAL; break;
|
---|
566 | case ERROR_NEGATIVE_SEEK: errno = EINVAL; break;
|
---|
567 | case ERROR_TOO_MANY_OPEN_FILES: errno = EMFILE; break;
|
---|
568 | case ERROR_FILE_NOT_FOUND: errno = ENOENT; break;
|
---|
569 | case ERROR_PATH_NOT_FOUND: errno = ENOENT; break;
|
---|
570 | case ERROR_INVALID_DRIVE: errno = ENOENT; break;
|
---|
571 | case ERROR_NO_MORE_FILES: errno = ENOENT; break;
|
---|
572 | case ERROR_BAD_NETPATH: errno = ENOENT; break;
|
---|
573 | case ERROR_BAD_NET_NAME: errno = ENOENT; break;
|
---|
574 | case ERROR_BAD_PATHNAME: errno = ENOENT; break;
|
---|
575 | case ERROR_FILENAME_EXCED_RANGE: errno = ENOENT; break;
|
---|
576 | case ERROR_BAD_FORMAT: errno = ENOEXEC; break;
|
---|
577 | case ERROR_ARENA_TRASHED: errno = ENOMEM; break;
|
---|
578 | case ERROR_NOT_ENOUGH_MEMORY: errno = ENOMEM; break;
|
---|
579 | case ERROR_INVALID_BLOCK: errno = ENOMEM; break;
|
---|
580 | case ERROR_NOT_ENOUGH_QUOTA: errno = ENOMEM; break;
|
---|
581 | case ERROR_DISK_FULL: errno = ENOSPC; break;
|
---|
582 | case ERROR_DIR_NOT_EMPTY: errno = ENOTEMPTY; break;
|
---|
583 | case ERROR_BROKEN_PIPE: errno = EPIPE; break;
|
---|
584 | case ERROR_NOT_SAME_DEVICE: errno = EXDEV; break;
|
---|
585 | default: errno = EINVAL; break;
|
---|
586 | }
|
---|
587 | return -1;
|
---|
588 | }
|
---|
589 |
|
---|
590 | /**
|
---|
591 | * Converts an NT status code to errno,
|
---|
592 | * assigning it to errno.
|
---|
593 | *
|
---|
594 | * @returns -1
|
---|
595 | * @param rcNt The NT status code.
|
---|
596 | */
|
---|
597 | static int shfile_nt2errno(NTSTATUS rcNt)
|
---|
598 | {
|
---|
599 | switch (rcNt)
|
---|
600 | {
|
---|
601 | default: errno = EINVAL; break;
|
---|
602 | }
|
---|
603 | return -1;
|
---|
604 | }
|
---|
605 |
|
---|
606 | DWORD shfile_query_handle_access_mask(HANDLE h, PACCESS_MASK pMask)
|
---|
607 | {
|
---|
608 | MY_OBJECT_BASIC_INFORMATION BasicInfo;
|
---|
609 | NTSTATUS rcNt;
|
---|
610 |
|
---|
611 | if (!g_pfnNtQueryObject)
|
---|
612 | return ERROR_NOT_SUPPORTED;
|
---|
613 |
|
---|
614 | rcNt = g_pfnNtQueryObject(h, MY_ObjectBasicInformation, &BasicInfo, sizeof(BasicInfo), NULL);
|
---|
615 | if (rcNt >= 0)
|
---|
616 | {
|
---|
617 | *pMask = BasicInfo.GrantedAccess;
|
---|
618 | return NO_ERROR;
|
---|
619 | }
|
---|
620 | if (rcNt != STATUS_INVALID_HANDLE)
|
---|
621 | return ERROR_GEN_FAILURE;
|
---|
622 | return ERROR_INVALID_HANDLE;
|
---|
623 | }
|
---|
624 |
|
---|
625 | # endif /* K_OS == K_OS_WINDOWS */
|
---|
626 |
|
---|
627 | #endif /* SHFILE_IN_USE */
|
---|
628 |
|
---|
629 | /**
|
---|
630 | * Converts DOS slashes to UNIX slashes if necessary.
|
---|
631 | *
|
---|
632 | * @param pszPath The path to fix.
|
---|
633 | */
|
---|
634 | K_INLINE void shfile_fix_slashes(char *pszPath)
|
---|
635 | {
|
---|
636 | #if K_OS == K_OS_WINDOWS || K_OS == K_OS_OS2
|
---|
637 | while ((pszPath = strchr(pszPath, '\\')))
|
---|
638 | *pszPath++ = '/';
|
---|
639 | #else
|
---|
640 | (void)pszPath;
|
---|
641 | #endif
|
---|
642 | }
|
---|
643 |
|
---|
644 | /**
|
---|
645 | * Initializes the global variables in this file.
|
---|
646 | */
|
---|
647 | static void shfile_init_globals(void)
|
---|
648 | {
|
---|
649 | #if K_OS == K_OS_WINDOWS
|
---|
650 | if (!g_shfile_globals_initialized)
|
---|
651 | {
|
---|
652 | HMODULE hNtDll = GetModuleHandle("NTDLL");
|
---|
653 | g_pfnNtQueryObject = (PFN_NtQueryObject) GetProcAddress(hNtDll, "NtQueryObject");
|
---|
654 | g_pfnNtQueryDirectoryFile = (PFN_NtQueryDirectoryFile)GetProcAddress(hNtDll, "NtQueryDirectoryFile");
|
---|
655 | g_pfnRtlUnicodeStringToAnsiString = (PFN_RtlUnicodeStringToAnsiString)GetProcAddress(hNtDll, "RtlUnicodeStringToAnsiString");
|
---|
656 | if ( !g_pfnRtlUnicodeStringToAnsiString
|
---|
657 | || !g_pfnNtQueryDirectoryFile)
|
---|
658 | {
|
---|
659 | /* fatal error */
|
---|
660 | }
|
---|
661 | g_shfile_globals_initialized = 1;
|
---|
662 | }
|
---|
663 | #endif
|
---|
664 | }
|
---|
665 |
|
---|
666 | /**
|
---|
667 | * Initializes a file descriptor table.
|
---|
668 | *
|
---|
669 | * @returns 0 on success, -1 and errno on failure.
|
---|
670 | * @param pfdtab The table to initialize.
|
---|
671 | * @param inherit File descriptor table to inherit from. If not specified
|
---|
672 | * we will inherit from the current process as it were.
|
---|
673 | */
|
---|
674 | int shfile_init(shfdtab *pfdtab, shfdtab *inherit)
|
---|
675 | {
|
---|
676 | int rc;
|
---|
677 |
|
---|
678 | shfile_init_globals();
|
---|
679 |
|
---|
680 | pfdtab->cwd = NULL;
|
---|
681 | pfdtab->size = 0;
|
---|
682 | pfdtab->tab = NULL;
|
---|
683 | rc = shmtx_init(&pfdtab->mtx);
|
---|
684 | if (!rc)
|
---|
685 | {
|
---|
686 | #ifdef SHFILE_IN_USE
|
---|
687 | /* Get CWD with unix slashes. */
|
---|
688 | if (!inherit)
|
---|
689 | {
|
---|
690 | char buf[SHFILE_MAX_PATH];
|
---|
691 | if (getcwd(buf, sizeof(buf)))
|
---|
692 | {
|
---|
693 | shfile_fix_slashes(buf);
|
---|
694 | pfdtab->cwd = sh_strdup(NULL, buf);
|
---|
695 | }
|
---|
696 | if (pfdtab->cwd)
|
---|
697 | {
|
---|
698 | # if K_OS == K_OS_WINDOWS
|
---|
699 | static const struct
|
---|
700 | {
|
---|
701 | DWORD dwStdHandle;
|
---|
702 | unsigned fFlags;
|
---|
703 | } aStdHandles[3] =
|
---|
704 | {
|
---|
705 | { STD_INPUT_HANDLE, _O_RDONLY },
|
---|
706 | { STD_OUTPUT_HANDLE, _O_WRONLY },
|
---|
707 | { STD_ERROR_HANDLE, _O_WRONLY }
|
---|
708 | };
|
---|
709 | int i;
|
---|
710 | STARTUPINFO Info;
|
---|
711 | ACCESS_MASK Mask;
|
---|
712 | DWORD dwErr;
|
---|
713 |
|
---|
714 | rc = 0;
|
---|
715 |
|
---|
716 | /* Try pick up the Visual C++ CRT file descriptor info. */
|
---|
717 | __try {
|
---|
718 | GetStartupInfo(&Info);
|
---|
719 | } __except (EXCEPTION_EXECUTE_HANDLER) {
|
---|
720 | memset(&Info, 0, sizeof(Info));
|
---|
721 | }
|
---|
722 |
|
---|
723 | if ( Info.cbReserved2 > sizeof(int)
|
---|
724 | && (uintptr_t)Info.lpReserved2 >= 0x1000
|
---|
725 | && (i = *(int *)Info.lpReserved2) >= 1
|
---|
726 | && i <= 2048
|
---|
727 | && ( Info.cbReserved2 == i * 5 + 4
|
---|
728 | //|| Info.cbReserved2 == i * 5 + 1 - check the cygwin sources.
|
---|
729 | || Info.cbReserved2 == i * 9 + 4))
|
---|
730 | {
|
---|
731 | uint8_t *paf = (uint8_t *)Info.lpReserved2 + sizeof(int);
|
---|
732 | int dwPerH = 1 + (Info.cbReserved2 == i * 9 + 4);
|
---|
733 | DWORD *ph = (DWORD *)(paf + i) + dwPerH * i;
|
---|
734 | HANDLE aStdHandles2[3];
|
---|
735 | int j;
|
---|
736 |
|
---|
737 | //if (Info.cbReserved2 == i * 5 + 1) - check the cygwin sources.
|
---|
738 | // i--;
|
---|
739 |
|
---|
740 | for (j = 0; j < 3; j++)
|
---|
741 | aStdHandles2[j] = GetStdHandle(aStdHandles[j].dwStdHandle);
|
---|
742 |
|
---|
743 | while (i-- > 0)
|
---|
744 | {
|
---|
745 | ph -= dwPerH;
|
---|
746 |
|
---|
747 | if ( (paf[i] & (FOPEN | FNOINHERIT)) == FOPEN
|
---|
748 | && *ph != (uint32_t)INVALID_HANDLE_VALUE)
|
---|
749 | {
|
---|
750 | HANDLE h = (HANDLE)(intptr_t)*ph;
|
---|
751 | int fd2;
|
---|
752 | int fFlags;
|
---|
753 | int fFlags2;
|
---|
754 |
|
---|
755 | if ( h == aStdHandles2[j = 0]
|
---|
756 | || h == aStdHandles2[j = 1]
|
---|
757 | || h == aStdHandles2[j = 2])
|
---|
758 | fFlags = aStdHandles[j].fFlags;
|
---|
759 | else
|
---|
760 | {
|
---|
761 | dwErr = shfile_query_handle_access_mask(h, &Mask);
|
---|
762 | if (dwErr == ERROR_INVALID_HANDLE)
|
---|
763 | continue;
|
---|
764 | else if (dwErr == NO_ERROR)
|
---|
765 | {
|
---|
766 | fFlags = 0;
|
---|
767 | if ( (Mask & (GENERIC_READ | FILE_READ_DATA))
|
---|
768 | && (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA)))
|
---|
769 | fFlags |= O_RDWR;
|
---|
770 | else if (Mask & (GENERIC_READ | FILE_READ_DATA))
|
---|
771 | fFlags |= O_RDONLY;
|
---|
772 | else if (Mask & (GENERIC_WRITE | FILE_WRITE_DATA | FILE_APPEND_DATA))
|
---|
773 | fFlags |= O_WRONLY;
|
---|
774 | else
|
---|
775 | fFlags |= O_RDWR;
|
---|
776 | if ((Mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) == FILE_APPEND_DATA)
|
---|
777 | fFlags |= O_APPEND;
|
---|
778 | }
|
---|
779 | else
|
---|
780 | fFlags = O_RDWR;
|
---|
781 | }
|
---|
782 |
|
---|
783 | if (paf[i] & FPIPE)
|
---|
784 | fFlags2 = SHFILE_FLAGS_PIPE;
|
---|
785 | else if (paf[i] & FDEV)
|
---|
786 | fFlags2 = SHFILE_FLAGS_TTY;
|
---|
787 | else
|
---|
788 | fFlags2 = 0;
|
---|
789 |
|
---|
790 | fd2 = shfile_insert(pfdtab, (intptr_t)h, fFlags, fFlags2, i, "shtab_init", NULL);
|
---|
791 | assert(fd2 == i); (void)fd2;
|
---|
792 | if (fd2 != i)
|
---|
793 | rc = -1;
|
---|
794 | }
|
---|
795 | }
|
---|
796 | }
|
---|
797 |
|
---|
798 | /* Check the three standard handles. */
|
---|
799 | for (i = 0; i < 3; i++)
|
---|
800 | if ( (unsigned)i >= pfdtab->size
|
---|
801 | || pfdtab->tab[i].fd == -1)
|
---|
802 | {
|
---|
803 | HANDLE hFile = GetStdHandle(aStdHandles[i].dwStdHandle);
|
---|
804 | if (hFile != INVALID_HANDLE_VALUE)
|
---|
805 | {
|
---|
806 | DWORD dwType = GetFileType(hFile);
|
---|
807 | unsigned fFlags = aStdHandles[i].fFlags;
|
---|
808 | unsigned fFlags2;
|
---|
809 | int fd2;
|
---|
810 | if (dwType == FILE_TYPE_CHAR)
|
---|
811 | fFlags2 = SHFILE_FLAGS_TTY;
|
---|
812 | else if (dwType == FILE_TYPE_PIPE)
|
---|
813 | fFlags2 = SHFILE_FLAGS_PIPE;
|
---|
814 | else
|
---|
815 | fFlags2 = SHFILE_FLAGS_FILE;
|
---|
816 | fd2 = shfile_insert(pfdtab, (intptr_t)hFile, fFlags, fFlags2, i, "shtab_init", NULL);
|
---|
817 | assert(fd2 == i); (void)fd2;
|
---|
818 | if (fd2 != i)
|
---|
819 | rc = -1;
|
---|
820 | }
|
---|
821 | }
|
---|
822 | # else
|
---|
823 | /*
|
---|
824 | * Annoying...
|
---|
825 | */
|
---|
826 | int fd;
|
---|
827 |
|
---|
828 | for (fd = 0; fd < 10; fd++)
|
---|
829 | {
|
---|
830 | int oflags = fcntl(fd, F_GETFL, 0);
|
---|
831 | if (oflags != -1)
|
---|
832 | {
|
---|
833 | int cox = fcntl(fd, F_GETFD, 0);
|
---|
834 | struct stat st;
|
---|
835 | if ( cox != -1
|
---|
836 | && fstat(fd, &st) != -1)
|
---|
837 | {
|
---|
838 | int native;
|
---|
839 | int fd2;
|
---|
840 | int fFlags2 = 0;
|
---|
841 | if (cox & FD_CLOEXEC)
|
---|
842 | fFlags2 |= SHFILE_FLAGS_CLOSE_ON_EXEC;
|
---|
843 | if (S_ISREG(st.st_mode))
|
---|
844 | fFlags2 |= SHFILE_FLAGS_FILE;
|
---|
845 | else if (S_ISDIR(st.st_mode))
|
---|
846 | fFlags2 |= SHFILE_FLAGS_DIR;
|
---|
847 | else if (S_ISCHR(st.st_mode))
|
---|
848 | fFlags2 |= SHFILE_FLAGS_TTY;
|
---|
849 | else if (S_ISFIFO(st.st_mode))
|
---|
850 | fFlags2 |= SHFILE_FLAGS_PIPE;
|
---|
851 | else
|
---|
852 | fFlags2 |= SHFILE_FLAGS_TTY;
|
---|
853 |
|
---|
854 | native = fcntl(fd, F_DUPFD, SHFILE_UNIX_MIN_FD);
|
---|
855 | if (native == -1)
|
---|
856 | native = fd;
|
---|
857 | fd2 = shfile_insert(pfdtab, native, oflags, fFlags2, fd, "shtab_init", NULL);
|
---|
858 | assert(fd2 == fd); (void)fd2;
|
---|
859 | if (fd2 != fd)
|
---|
860 | rc = -1;
|
---|
861 | if (native != fd)
|
---|
862 | close(fd);
|
---|
863 | }
|
---|
864 | }
|
---|
865 | }
|
---|
866 |
|
---|
867 | # endif
|
---|
868 | }
|
---|
869 | else
|
---|
870 | rc = -1;
|
---|
871 | }
|
---|
872 | else
|
---|
873 | {
|
---|
874 | /*
|
---|
875 | * Inherit from parent shell's file table.
|
---|
876 | */
|
---|
877 | shfile const *src;
|
---|
878 | shfile *dst;
|
---|
879 | shmtxtmp tmp;
|
---|
880 | unsigned fdcount;
|
---|
881 | unsigned fd;
|
---|
882 |
|
---|
883 | shmtx_enter(&inherit->mtx, &tmp);
|
---|
884 |
|
---|
885 | /* allocate table and cwd: */
|
---|
886 | fdcount = inherit->size;
|
---|
887 | pfdtab->tab = dst = (shfile *)(fdcount ? sh_calloc(NULL, sizeof(pfdtab->tab[0]), fdcount) : NULL);
|
---|
888 | pfdtab->cwd = sh_strdup(NULL, inherit->cwd);
|
---|
889 | if ( pfdtab->cwd
|
---|
890 | && (pfdtab->tab || fdcount == 0))
|
---|
891 | {
|
---|
892 | /* duplicate table entries: */
|
---|
893 | for (fd = 0, src = inherit->tab; fd < fdcount; fd++, src++, dst++)
|
---|
894 | if (src->fd == -1)
|
---|
895 | dst->native = dst->fd = -1;
|
---|
896 | else
|
---|
897 | {
|
---|
898 | # if K_OS == K_OS_WINDOWS
|
---|
899 | # ifdef SH_FORKED_MODE
|
---|
900 | KBOOL const cox = !!(src->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC);
|
---|
901 | # else
|
---|
902 | KBOOL const cox = K_TRUE;
|
---|
903 | # endif
|
---|
904 | # endif
|
---|
905 | *dst = *src;
|
---|
906 | # ifdef DEBUG
|
---|
907 | if (src->dbgname)
|
---|
908 | dst->dbgname = sh_strdup(NULL, src->dbgname);
|
---|
909 | # endif
|
---|
910 | # if K_OS == K_OS_WINDOWS
|
---|
911 | if (DuplicateHandle(GetCurrentProcess(),
|
---|
912 | (HANDLE)src->native,
|
---|
913 | GetCurrentProcess(),
|
---|
914 | (HANDLE *)&dst->native,
|
---|
915 | 0,
|
---|
916 | FALSE /* bInheritHandle */,
|
---|
917 | DUPLICATE_SAME_ACCESS))
|
---|
918 | TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p (was %p)\n",
|
---|
919 | dst->fd, dst->oflags, dst->shflags, dst->native, src->native));
|
---|
920 | else
|
---|
921 | {
|
---|
922 | dst->native = (intptr_t)INVALID_HANDLE_VALUE;
|
---|
923 | rc = shfile_dos2errno(GetLastError());
|
---|
924 | TRACE2((NULL, "shfile_init: %d (%#x, %#x) %p - failed %d / %u!\n",
|
---|
925 | dst->fd, dst->oflags, dst->shflags, src->native, rc, GetLastError()));
|
---|
926 | break;
|
---|
927 | }
|
---|
928 |
|
---|
929 | # elif K_OS == K_OS_LINUX /* 2.6.27 / glibc 2.9 */ || K_OS == K_OS_FREEBSD /* 10.0 */ || K_OS == K_OS_NETBSD /* 6.0 */
|
---|
930 | dst->native = dup3(src->native, -1, cox ? O_CLOEXEC : 0);
|
---|
931 | # else
|
---|
932 | if (cox)
|
---|
933 | {
|
---|
934 | # ifndef SH_FORKED_MODE
|
---|
935 | shmtxtmp tmp2;
|
---|
936 | shmtx_enter(&global_exec_something, &tmp)
|
---|
937 | # endif
|
---|
938 | dst->native = dup2(src->native, -1);
|
---|
939 | if (dst->native >= 0)
|
---|
940 | rc = fcntl(dst->native, F_SETFD, FD_CLOEXEC);
|
---|
941 | # ifndef SH_FORKED_MODE
|
---|
942 | shmtx_leave(&global_exec_something, &tmp)
|
---|
943 | # endif
|
---|
944 | if (rc != 0)
|
---|
945 | break;
|
---|
946 | }
|
---|
947 | else
|
---|
948 | dst->native = dup2(src->native, -1);
|
---|
949 | if (dst->native < 0)
|
---|
950 | {
|
---|
951 | rc = -1;
|
---|
952 | break;
|
---|
953 | }
|
---|
954 | # endif
|
---|
955 | }
|
---|
956 | }
|
---|
957 | else
|
---|
958 | rc = -1;
|
---|
959 | pfdtab->size = fd;
|
---|
960 | shmtx_leave(&inherit->mtx, &tmp);
|
---|
961 | } /* inherit != NULL */
|
---|
962 | #endif
|
---|
963 | }
|
---|
964 | return rc;
|
---|
965 | }
|
---|
966 |
|
---|
967 | /**
|
---|
968 | * Deletes the file descriptor table.
|
---|
969 | *
|
---|
970 | * Safe to call more than once.
|
---|
971 | */
|
---|
972 | void shfile_uninit(shfdtab *pfdtab, int tracefd)
|
---|
973 | {
|
---|
974 | if (!pfdtab)
|
---|
975 | return;
|
---|
976 |
|
---|
977 | if (pfdtab->tab)
|
---|
978 | {
|
---|
979 | unsigned left = pfdtab->size;
|
---|
980 | struct shfile *pfd = pfdtab->tab;
|
---|
981 | unsigned tracefdfound = 0;
|
---|
982 | while (left-- > 0)
|
---|
983 | {
|
---|
984 | if (pfd->fd != -1)
|
---|
985 | {
|
---|
986 | if (pfd->fd != tracefd)
|
---|
987 | {
|
---|
988 | #if K_OS == K_OS_WINDOWS
|
---|
989 | BOOL rc = CloseHandle((HANDLE)pfd->native);
|
---|
990 | assert(rc == TRUE); K_NOREF(rc);
|
---|
991 | #else
|
---|
992 | int rc = close((int)pfd->native);
|
---|
993 | assert(rc == 0); K_NOREF(rc);
|
---|
994 | #endif
|
---|
995 | pfd->fd = -1;
|
---|
996 | pfd->native = -1;
|
---|
997 | }
|
---|
998 | else
|
---|
999 | tracefdfound++; /* there is only the one */
|
---|
1000 | }
|
---|
1001 | pfd++;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | if (!tracefdfound)
|
---|
1005 | { /* likely */ }
|
---|
1006 | else
|
---|
1007 | return;
|
---|
1008 |
|
---|
1009 | sh_free(NULL, pfdtab->tab);
|
---|
1010 | pfdtab->tab = NULL;
|
---|
1011 | }
|
---|
1012 |
|
---|
1013 | shmtx_delete(&pfdtab->mtx);
|
---|
1014 |
|
---|
1015 | sh_free(NULL, pfdtab->cwd);
|
---|
1016 | pfdtab->cwd = NULL;
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | #if K_OS == K_OS_WINDOWS && defined(SHFILE_IN_USE)
|
---|
1020 |
|
---|
1021 | /**
|
---|
1022 | * Changes the inheritability of a file descriptor, taking console handles into
|
---|
1023 | * account.
|
---|
1024 | *
|
---|
1025 | * @note This MAY change the native handle for the entry.
|
---|
1026 | *
|
---|
1027 | * @returns The native handle.
|
---|
1028 | * @param pfd The file descriptor to change.
|
---|
1029 | * @param set If set, make child processes inherit the handle, if clear
|
---|
1030 | * make them not inherit it.
|
---|
1031 | */
|
---|
1032 | static HANDLE shfile_set_inherit_win(shfile *pfd, int set)
|
---|
1033 | {
|
---|
1034 | HANDLE hFile = (HANDLE)pfd->native;
|
---|
1035 | if (!SetHandleInformation(hFile, HANDLE_FLAG_INHERIT, set ? HANDLE_FLAG_INHERIT : 0))
|
---|
1036 | {
|
---|
1037 | /* SetHandleInformation doesn't work for console handles,
|
---|
1038 | so we have to duplicate the handle to change the
|
---|
1039 | inheritability. */
|
---|
1040 | DWORD err = GetLastError();
|
---|
1041 | if ( err == ERROR_INVALID_PARAMETER
|
---|
1042 | && DuplicateHandle(GetCurrentProcess(),
|
---|
1043 | hFile,
|
---|
1044 | GetCurrentProcess(),
|
---|
1045 | &hFile,
|
---|
1046 | 0,
|
---|
1047 | set ? TRUE : FALSE /* bInheritHandle */,
|
---|
1048 | DUPLICATE_SAME_ACCESS))
|
---|
1049 | {
|
---|
1050 | TRACE2((NULL, "shfile_set_inherit_win: %p -> %p (set=%d)\n", pfd->native, hFile, set));
|
---|
1051 | if (!CloseHandle((HANDLE)pfd->native))
|
---|
1052 | assert(0);
|
---|
1053 | pfd->native = (intptr_t)hFile;
|
---|
1054 | }
|
---|
1055 | else
|
---|
1056 | {
|
---|
1057 | err = GetLastError();
|
---|
1058 | assert(0);
|
---|
1059 | hFile = (HANDLE)pfd->native;
|
---|
1060 | }
|
---|
1061 | }
|
---|
1062 | return hFile;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 | # ifdef SH_FORKED_MODE
|
---|
1066 | /**
|
---|
1067 | * Helper for shfork.
|
---|
1068 | *
|
---|
1069 | * @param pfdtab The file descriptor table.
|
---|
1070 | * @param set Whether to make all handles inheritable (1) or
|
---|
1071 | * to restore them to the rigth state (0).
|
---|
1072 | * @param hndls Where to store the three standard handles.
|
---|
1073 | */
|
---|
1074 | void shfile_fork_win(shfdtab *pfdtab, int set, intptr_t *hndls)
|
---|
1075 | {
|
---|
1076 | shmtxtmp tmp;
|
---|
1077 | unsigned i;
|
---|
1078 |
|
---|
1079 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1080 | TRACE2((NULL, "shfile_fork_win: set=%d\n", set));
|
---|
1081 |
|
---|
1082 | i = pfdtab->size;
|
---|
1083 | while (i-- > 0)
|
---|
1084 | {
|
---|
1085 | if (pfdtab->tab[i].fd == i)
|
---|
1086 | {
|
---|
1087 | shfile_set_inherit_win(&pfdtab->tab[i], set);
|
---|
1088 | if (set)
|
---|
1089 | TRACE2((NULL, " #%d: native=%#x oflags=%#x shflags=%#x\n",
|
---|
1090 | i, pfdtab->tab[i].native, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
|
---|
1091 | }
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | if (hndls)
|
---|
1095 | {
|
---|
1096 | for (i = 0; i < 3; i++)
|
---|
1097 | {
|
---|
1098 | if ( pfdtab->size > i
|
---|
1099 | && pfdtab->tab[i].fd == i)
|
---|
1100 | hndls[i] = pfdtab->tab[i].native;
|
---|
1101 | else
|
---|
1102 | hndls[i] = (intptr_t)INVALID_HANDLE_VALUE;
|
---|
1103 | TRACE2((NULL, "shfile_fork_win: i=%d size=%d fd=%d native=%d hndls[%d]=%p\n",
|
---|
1104 | i, pfdtab->size, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, hndls[i]));
|
---|
1105 | }
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
1109 | }
|
---|
1110 | # endif /* SH_FORKED_MODE */
|
---|
1111 |
|
---|
1112 | /** shfile_exec_win helper that make sure there are no _O_APPEND handles. */
|
---|
1113 | static KBOOL shfile_exec_win_no_append(shfdtab *pfdtab, unsigned count)
|
---|
1114 | {
|
---|
1115 | unsigned i;
|
---|
1116 | for (i = 0; i < count; i++)
|
---|
1117 | if ( (pfdtab->tab[i].oflags & _O_APPEND)
|
---|
1118 | && (pfdtab->tab[i].oflags & (_O_WRONLY | _O_RDWR)))
|
---|
1119 | return K_FALSE;
|
---|
1120 | return K_TRUE;
|
---|
1121 | }
|
---|
1122 |
|
---|
1123 | /**
|
---|
1124 | * Helper for sh_execve.
|
---|
1125 | *
|
---|
1126 | * This is called before and after CreateProcess. On the first call it
|
---|
1127 | * will mark the non-close-on-exec handles as inheritable and produce
|
---|
1128 | * the startup info for the CRT. On the second call, after CreateProcess,
|
---|
1129 | * it will restore the handle inheritability properties.
|
---|
1130 | *
|
---|
1131 | * @returns 0 on success, non-zero on failure.
|
---|
1132 | * @param pfdtab The file descriptor table.
|
---|
1133 | * @param prepare Which call, 1 if before, 0 if after and success, -1 if after on failure.
|
---|
1134 | * @param info The info structure.
|
---|
1135 | */
|
---|
1136 | int shfile_exec_win(shfdtab *pfdtab, int prepare, shfdexecwin *info)
|
---|
1137 | {
|
---|
1138 | STARTUPINFOA *strtinfo = (STARTUPINFOA *)info->strtinfo;
|
---|
1139 | int rc = 0;
|
---|
1140 | shmtxtmp tmp;
|
---|
1141 | unsigned count;
|
---|
1142 | unsigned i;
|
---|
1143 |
|
---|
1144 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1145 | TRACE2((NULL, "shfile_exec_win: prepare=%p\n", prepare));
|
---|
1146 |
|
---|
1147 | count = pfdtab->size < (0x10000-4) / (1 + sizeof(HANDLE))
|
---|
1148 | ? pfdtab->size
|
---|
1149 | : (0x10000-4) / (1 + sizeof(HANDLE));
|
---|
1150 | while ( count > 3
|
---|
1151 | && ( pfdtab->tab[count - 1].fd == -1
|
---|
1152 | || (pfdtab->tab[count - 1].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC)))
|
---|
1153 | count--;
|
---|
1154 |
|
---|
1155 | if (prepare > 0)
|
---|
1156 | {
|
---|
1157 | if (count <= 3 && shfile_exec_win_no_append(pfdtab, count))
|
---|
1158 | {
|
---|
1159 | info->inherithandles = 0;
|
---|
1160 | info->startsuspended = 1;
|
---|
1161 | strtinfo->cbReserved2 = 0;
|
---|
1162 | strtinfo->lpReserved2 = NULL;
|
---|
1163 | }
|
---|
1164 | else
|
---|
1165 | {
|
---|
1166 | size_t cbData = sizeof(int) + count * (1 + sizeof(HANDLE));
|
---|
1167 | uint8_t *pbData = sh_malloc(shthread_get_shell(), cbData);
|
---|
1168 | uint8_t *paf = pbData + sizeof(int);
|
---|
1169 | HANDLE *pah = (HANDLE *)(paf + count);
|
---|
1170 |
|
---|
1171 | info->inherithandles = 1;
|
---|
1172 | info->startsuspended = 0;
|
---|
1173 | strtinfo->cbReserved2 = (unsigned short)cbData;
|
---|
1174 | strtinfo->lpReserved2 = pbData;
|
---|
1175 |
|
---|
1176 | # ifndef SH_FORKED_MODE
|
---|
1177 | shmtx_leave(&pfdtab->mtx, &tmp); /* should be harmless as this isn't really necessary at all. */
|
---|
1178 | shmtx_enter(&g_sh_exec_inherit_mtx, &info->tmp);
|
---|
1179 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1180 | # endif
|
---|
1181 |
|
---|
1182 | *(int *)pbData = count;
|
---|
1183 |
|
---|
1184 | i = count;
|
---|
1185 | while (i-- > 0)
|
---|
1186 | {
|
---|
1187 | if ( pfdtab->tab[i].fd == i
|
---|
1188 | && !(pfdtab->tab[i].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
|
---|
1189 | {
|
---|
1190 | HANDLE hFile = shfile_set_inherit_win(&pfdtab->tab[i], 1);
|
---|
1191 | TRACE2((NULL, " #%d: native=%#x oflags=%#x shflags=%#x\n",
|
---|
1192 | i, hFile, pfdtab->tab[i].oflags, pfdtab->tab[i].shflags));
|
---|
1193 | paf[i] = FOPEN;
|
---|
1194 | if (pfdtab->tab[i].oflags & _O_APPEND)
|
---|
1195 | paf[i] |= FAPPEND;
|
---|
1196 | if (pfdtab->tab[i].oflags & _O_TEXT)
|
---|
1197 | paf[i] |= FTEXT;
|
---|
1198 | switch (pfdtab->tab[i].shflags & SHFILE_FLAGS_TYPE_MASK)
|
---|
1199 | {
|
---|
1200 | case SHFILE_FLAGS_TTY: paf[i] |= FDEV; break;
|
---|
1201 | case SHFILE_FLAGS_PIPE: paf[i] |= FPIPE; break;
|
---|
1202 | }
|
---|
1203 | pah[i] = hFile;
|
---|
1204 | }
|
---|
1205 | else
|
---|
1206 | {
|
---|
1207 | paf[i] = 0;
|
---|
1208 | pah[i] = INVALID_HANDLE_VALUE;
|
---|
1209 | }
|
---|
1210 | }
|
---|
1211 | }
|
---|
1212 |
|
---|
1213 | for (i = 0; i < 3; i++)
|
---|
1214 | {
|
---|
1215 | if ( i < count
|
---|
1216 | && pfdtab->tab[i].fd == i)
|
---|
1217 | {
|
---|
1218 | info->replacehandles[i] = 1;
|
---|
1219 | info->handles[i] = pfdtab->tab[i].native;
|
---|
1220 | }
|
---|
1221 | else
|
---|
1222 | {
|
---|
1223 | info->replacehandles[i] = 0;
|
---|
1224 | info->handles[i] = (intptr_t)INVALID_HANDLE_VALUE;
|
---|
1225 | }
|
---|
1226 | TRACE2((NULL, "shfile_exec_win: i=%d count=%d fd=%d native=%d hndls[%d]=\n",
|
---|
1227 | i, count, pfdtab->tab[i].fd, pfdtab->tab[i].native, i, info->handles[i]));
|
---|
1228 | }
|
---|
1229 | }
|
---|
1230 | else
|
---|
1231 | {
|
---|
1232 | shfile *file = pfdtab->tab;
|
---|
1233 |
|
---|
1234 | sh_free(NULL, strtinfo->lpReserved2);
|
---|
1235 | strtinfo->lpReserved2 = NULL;
|
---|
1236 |
|
---|
1237 | i = count;
|
---|
1238 | if (prepare == 0)
|
---|
1239 | for (i = 0; i < count; i++, file++)
|
---|
1240 | {
|
---|
1241 | if ( file->fd == i
|
---|
1242 | && !(file->shflags & SHFILE_FLAGS_TRACE))
|
---|
1243 | {
|
---|
1244 | shfile_native_close(file->native, file);
|
---|
1245 |
|
---|
1246 | file->fd = -1;
|
---|
1247 | file->oflags = 0;
|
---|
1248 | file->shflags = 0;
|
---|
1249 | file->native = -1;
|
---|
1250 | # ifdef DEBUG
|
---|
1251 | sh_free(NULL, file->dbgname);
|
---|
1252 | file->dbgname = NULL;
|
---|
1253 | # endif
|
---|
1254 | }
|
---|
1255 | }
|
---|
1256 | else if (info->inherithandles)
|
---|
1257 | for (i = 0; i < count; i++, file++)
|
---|
1258 | if ( file->fd == i
|
---|
1259 | && !(file->shflags & SHFILE_FLAGS_CLOSE_ON_EXEC))
|
---|
1260 | shfile_set_inherit_win(file, 0);
|
---|
1261 |
|
---|
1262 | # ifndef SH_FORKED_MODE
|
---|
1263 | if (info->inherithandles)
|
---|
1264 | shmtx_leave(&g_sh_exec_inherit_mtx, &info->tmp);
|
---|
1265 | # endif
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
1269 | return rc;
|
---|
1270 | }
|
---|
1271 |
|
---|
1272 | #endif /* K_OS_WINDOWS */
|
---|
1273 |
|
---|
1274 | #if K_OS != K_OS_WINDOWS
|
---|
1275 | /**
|
---|
1276 | * Prepare file handles for inherting before a execve call.
|
---|
1277 | *
|
---|
1278 | * This is only used in the normal mode, so we've forked and need not worry
|
---|
1279 | * about cleaning anything up after us. Nor do we need think about locking.
|
---|
1280 | *
|
---|
1281 | * @returns 0 on success, -1 on failure.
|
---|
1282 | */
|
---|
1283 | int shfile_exec_unix(shfdtab *pfdtab)
|
---|
1284 | {
|
---|
1285 | int rc = 0;
|
---|
1286 | # ifdef SHFILE_IN_USE
|
---|
1287 | unsigned fd;
|
---|
1288 |
|
---|
1289 | for (fd = 0; fd < pfdtab->size; fd++)
|
---|
1290 | {
|
---|
1291 | if ( pfdtab->tab[fd].fd != -1
|
---|
1292 | && !(pfdtab->tab[fd].shflags & SHFILE_FLAGS_CLOSE_ON_EXEC) )
|
---|
1293 | {
|
---|
1294 | TRACE2((NULL, "shfile_exec_unix: %d => %d\n", pfdtab->tab[fd].native, fd));
|
---|
1295 | if (dup2(pfdtab->tab[fd].native, fd) < 0)
|
---|
1296 | {
|
---|
1297 | /* fatal_error(NULL, "shfile_exec_unix: failed to move %d to %d", pfdtab->tab[fd].fd, fd); */
|
---|
1298 | rc = -1;
|
---|
1299 | }
|
---|
1300 | }
|
---|
1301 | }
|
---|
1302 | # endif
|
---|
1303 | return rc;
|
---|
1304 | }
|
---|
1305 | #endif /* !K_OS_WINDOWS */
|
---|
1306 |
|
---|
1307 | /**
|
---|
1308 | * open().
|
---|
1309 | */
|
---|
1310 | int shfile_open(shfdtab *pfdtab, const char *name, unsigned flags, mode_t mode)
|
---|
1311 | {
|
---|
1312 | int fd;
|
---|
1313 | #ifdef SHFILE_IN_USE
|
---|
1314 | char absname[SHFILE_MAX_PATH];
|
---|
1315 | # if K_OS == K_OS_WINDOWS
|
---|
1316 | HANDLE hFile;
|
---|
1317 | DWORD dwDesiredAccess;
|
---|
1318 | DWORD dwShareMode;
|
---|
1319 | DWORD dwCreationDisposition;
|
---|
1320 | DWORD dwFlagsAndAttributes;
|
---|
1321 | SECURITY_ATTRIBUTES SecurityAttributes;
|
---|
1322 |
|
---|
1323 | # ifndef _O_ACCMODE
|
---|
1324 | # define _O_ACCMODE (_O_RDONLY|_O_WRONLY|_O_RDWR)
|
---|
1325 | # endif
|
---|
1326 | switch (flags & (_O_ACCMODE | _O_APPEND))
|
---|
1327 | {
|
---|
1328 | case _O_RDONLY: dwDesiredAccess = GENERIC_READ; break;
|
---|
1329 | case _O_RDONLY | _O_APPEND: dwDesiredAccess = GENERIC_READ; break;
|
---|
1330 | case _O_WRONLY: dwDesiredAccess = GENERIC_WRITE; break;
|
---|
1331 | case _O_WRONLY | _O_APPEND: dwDesiredAccess = (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
|
---|
1332 | case _O_RDWR: dwDesiredAccess = GENERIC_READ | GENERIC_WRITE; break;
|
---|
1333 | case _O_RDWR | _O_APPEND: dwDesiredAccess = GENERIC_READ | (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA); break;
|
---|
1334 |
|
---|
1335 | default:
|
---|
1336 | RETURN_ERROR(-1, EINVAL, "invalid mode");
|
---|
1337 | }
|
---|
1338 |
|
---|
1339 | dwShareMode = FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE;
|
---|
1340 |
|
---|
1341 | SecurityAttributes.nLength = sizeof(SecurityAttributes);
|
---|
1342 | SecurityAttributes.lpSecurityDescriptor = NULL;
|
---|
1343 | SecurityAttributes.bInheritHandle = FALSE;
|
---|
1344 |
|
---|
1345 | if (flags & _O_CREAT)
|
---|
1346 | {
|
---|
1347 | if ((flags & (_O_EXCL | _O_TRUNC)) == (_O_EXCL | _O_TRUNC))
|
---|
1348 | RETURN_ERROR(-1, EINVAL, "_O_EXCL | _O_TRUNC");
|
---|
1349 |
|
---|
1350 | if (flags & _O_TRUNC)
|
---|
1351 | dwCreationDisposition = CREATE_ALWAYS; /* not 100%, but close enough */
|
---|
1352 | else if (flags & _O_EXCL)
|
---|
1353 | dwCreationDisposition = CREATE_NEW;
|
---|
1354 | else
|
---|
1355 | dwCreationDisposition = OPEN_ALWAYS;
|
---|
1356 | }
|
---|
1357 | else if (flags & _O_TRUNC)
|
---|
1358 | dwCreationDisposition = TRUNCATE_EXISTING;
|
---|
1359 | else
|
---|
1360 | dwCreationDisposition = OPEN_EXISTING;
|
---|
1361 |
|
---|
1362 | if (!(flags & _O_CREAT) || (mode & 0222))
|
---|
1363 | dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
|
---|
1364 | else
|
---|
1365 | dwFlagsAndAttributes = FILE_ATTRIBUTE_READONLY;
|
---|
1366 |
|
---|
1367 | fd = shfile_make_path(pfdtab, name, &absname[0]);
|
---|
1368 | if (!fd)
|
---|
1369 | {
|
---|
1370 | # ifdef DEBUG
|
---|
1371 | KU64 ns = shfile_nano_ts();
|
---|
1372 | # endif
|
---|
1373 | SetLastError(0);
|
---|
1374 | hFile = CreateFileA(absname,
|
---|
1375 | dwDesiredAccess,
|
---|
1376 | dwShareMode,
|
---|
1377 | &SecurityAttributes,
|
---|
1378 | dwCreationDisposition,
|
---|
1379 | dwFlagsAndAttributes,
|
---|
1380 | NULL /* hTemplateFile */);
|
---|
1381 | # ifdef DEBUG
|
---|
1382 | ns = shfile_nano_ts() - ns;
|
---|
1383 | if (ns > 1000000)
|
---|
1384 | TRACE2((NULL, "shfile_open: %s ns hFile=%p (%d) %s\n", ns, hFile, GetLastError(), absname));
|
---|
1385 | # endif
|
---|
1386 | if (hFile != INVALID_HANDLE_VALUE)
|
---|
1387 | fd = shfile_insert(pfdtab, (intptr_t)hFile, flags, 0, -1, "shfile_open", absname);
|
---|
1388 | else
|
---|
1389 | fd = shfile_dos2errno(GetLastError());
|
---|
1390 | }
|
---|
1391 |
|
---|
1392 | # else /* K_OS != K_OS_WINDOWS */
|
---|
1393 | fd = shfile_make_path(pfdtab, name, &absname[0]);
|
---|
1394 | if (!fd)
|
---|
1395 | {
|
---|
1396 | fd = open(absname, flags, mode);
|
---|
1397 | if (fd != -1)
|
---|
1398 | fd = shfile_copy_insert_and_close(pfdtab, &fd, flags, 0, -1, "shfile_open", absname);
|
---|
1399 | }
|
---|
1400 |
|
---|
1401 | # endif /* K_OS != K_OS_WINDOWS */
|
---|
1402 |
|
---|
1403 | #else
|
---|
1404 | fd = open(name, flags, mode);
|
---|
1405 | #endif
|
---|
1406 |
|
---|
1407 | TRACE2((NULL, "shfile_open(%p:{%s}, %#x, 0%o) -> %d [%d]\n", name, name, flags, mode, fd, errno));
|
---|
1408 | return fd;
|
---|
1409 | }
|
---|
1410 |
|
---|
1411 | int shfile_pipe(shfdtab *pfdtab, int fds[2])
|
---|
1412 | {
|
---|
1413 | int rc = -1;
|
---|
1414 | #ifdef SHFILE_IN_USE
|
---|
1415 | # if K_OS == K_OS_WINDOWS
|
---|
1416 | HANDLE hRead = INVALID_HANDLE_VALUE;
|
---|
1417 | HANDLE hWrite = INVALID_HANDLE_VALUE;
|
---|
1418 | SECURITY_ATTRIBUTES SecurityAttributes;
|
---|
1419 |
|
---|
1420 | SecurityAttributes.nLength = sizeof(SecurityAttributes);
|
---|
1421 | SecurityAttributes.lpSecurityDescriptor = NULL;
|
---|
1422 | SecurityAttributes.bInheritHandle = FALSE;
|
---|
1423 |
|
---|
1424 | fds[1] = fds[0] = -1;
|
---|
1425 | if (CreatePipe(&hRead, &hWrite, &SecurityAttributes, 4096))
|
---|
1426 | {
|
---|
1427 | fds[0] = shfile_insert(pfdtab, (intptr_t)hRead, O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-rd");
|
---|
1428 | if (fds[0] != -1)
|
---|
1429 | {
|
---|
1430 | fds[1] = shfile_insert(pfdtab, (intptr_t)hWrite, O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-wr");
|
---|
1431 | if (fds[1] != -1)
|
---|
1432 | rc = 0;
|
---|
1433 | }
|
---|
1434 |
|
---|
1435 | # else
|
---|
1436 | int native_fds[2];
|
---|
1437 |
|
---|
1438 | fds[1] = fds[0] = -1;
|
---|
1439 | if (!pipe(native_fds))
|
---|
1440 | {
|
---|
1441 | fds[0] = shfile_copy_insert_and_close(pfdtab, &native_fds[0], O_RDONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-rd");
|
---|
1442 | if (fds[0] != -1)
|
---|
1443 | {
|
---|
1444 | fds[1] = shfile_copy_insert_and_close(pfdtab, &native_fds[1], O_WRONLY, SHFILE_FLAGS_PIPE, -1, "shfile_pipe", "pipe-wr");
|
---|
1445 | if (fds[1] != -1)
|
---|
1446 | rc = 0;
|
---|
1447 | }
|
---|
1448 | # endif
|
---|
1449 | if (fds[1] == -1)
|
---|
1450 | {
|
---|
1451 | int s = errno;
|
---|
1452 | if (fds[0] != -1)
|
---|
1453 | {
|
---|
1454 | shmtxtmp tmp;
|
---|
1455 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1456 | rc = fds[0];
|
---|
1457 | pfdtab->tab[rc].fd = -1;
|
---|
1458 | pfdtab->tab[rc].oflags = 0;
|
---|
1459 | pfdtab->tab[rc].shflags = 0;
|
---|
1460 | pfdtab->tab[rc].native = -1;
|
---|
1461 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
1462 | }
|
---|
1463 |
|
---|
1464 | # if K_OS == K_OS_WINDOWS
|
---|
1465 | CloseHandle(hRead);
|
---|
1466 | CloseHandle(hWrite);
|
---|
1467 | # else
|
---|
1468 | close(native_fds[0]);
|
---|
1469 | close(native_fds[1]);
|
---|
1470 | # endif
|
---|
1471 | fds[0] = fds[1] = -1;
|
---|
1472 | errno = s;
|
---|
1473 | rc = -1;
|
---|
1474 | }
|
---|
1475 | }
|
---|
1476 | else
|
---|
1477 | {
|
---|
1478 | # if K_OS == K_OS_WINDOWS
|
---|
1479 | errno = shfile_dos2errno(GetLastError());
|
---|
1480 | # endif
|
---|
1481 | rc = -1;
|
---|
1482 | }
|
---|
1483 |
|
---|
1484 | #else
|
---|
1485 | rc = pipe(fds);
|
---|
1486 | #endif
|
---|
1487 |
|
---|
1488 | TRACE2((NULL, "shfile_pipe() -> %d{%d,%d} [%d]\n", rc, fds[0], fds[1], errno));
|
---|
1489 | return rc;
|
---|
1490 | }
|
---|
1491 |
|
---|
1492 | /**
|
---|
1493 | * dup().
|
---|
1494 | */
|
---|
1495 | int shfile_dup(shfdtab *pfdtab, int fd)
|
---|
1496 | {
|
---|
1497 | return shfile_fcntl(pfdtab,fd, F_DUPFD, 0);
|
---|
1498 | }
|
---|
1499 |
|
---|
1500 | /**
|
---|
1501 | * Move the file descriptor, closing any existing descriptor at @a fdto.
|
---|
1502 | *
|
---|
1503 | * @returns fdto on success, -1 and errno on failure.
|
---|
1504 | * @param pfdtab The file descriptor table.
|
---|
1505 | * @param fdfrom The descriptor to move.
|
---|
1506 | * @param fdto Where to move it.
|
---|
1507 | */
|
---|
1508 | int shfile_movefd(shfdtab *pfdtab, int fdfrom, int fdto)
|
---|
1509 | {
|
---|
1510 | #ifdef SHFILE_IN_USE
|
---|
1511 | int rc;
|
---|
1512 | shmtxtmp tmp;
|
---|
1513 | shfile *file = shfile_get(pfdtab, fdfrom, &tmp);
|
---|
1514 | if (file)
|
---|
1515 | {
|
---|
1516 | /* prepare the new entry */
|
---|
1517 | if ((unsigned)fdto >= pfdtab->size)
|
---|
1518 | shfile_grow_tab_locked(pfdtab, fdto);
|
---|
1519 | if ((unsigned)fdto < pfdtab->size)
|
---|
1520 | {
|
---|
1521 | if (pfdtab->tab[fdto].fd != -1)
|
---|
1522 | shfile_native_close(pfdtab->tab[fdto].native, &pfdtab->tab[fdto]);
|
---|
1523 |
|
---|
1524 | /* setup the target. */
|
---|
1525 | pfdtab->tab[fdto].fd = fdto;
|
---|
1526 | pfdtab->tab[fdto].oflags = file->oflags;
|
---|
1527 | pfdtab->tab[fdto].shflags = file->shflags;
|
---|
1528 | pfdtab->tab[fdto].native = file->native;
|
---|
1529 | # ifdef DEBUG
|
---|
1530 | pfdtab->tab[fdto].dbgname = file->dbgname;
|
---|
1531 | # endif
|
---|
1532 |
|
---|
1533 | /* close the source. */
|
---|
1534 | file->fd = -1;
|
---|
1535 | file->oflags = 0;
|
---|
1536 | file->shflags = 0;
|
---|
1537 | file->native = -1;
|
---|
1538 | # ifdef DEBUG
|
---|
1539 | file->dbgname = NULL;
|
---|
1540 | # endif
|
---|
1541 |
|
---|
1542 | rc = fdto;
|
---|
1543 | }
|
---|
1544 | else
|
---|
1545 | {
|
---|
1546 | errno = EMFILE;
|
---|
1547 | rc = -1;
|
---|
1548 | }
|
---|
1549 |
|
---|
1550 | shfile_put(pfdtab, file, &tmp);
|
---|
1551 | }
|
---|
1552 | else
|
---|
1553 | rc = -1;
|
---|
1554 | return rc;
|
---|
1555 |
|
---|
1556 | #else
|
---|
1557 | int fdnew = dup2(fdfrom, fdto);
|
---|
1558 | if (fdnew >= 0)
|
---|
1559 | close(fdfrom);
|
---|
1560 | return fdnew;
|
---|
1561 | #endif
|
---|
1562 | }
|
---|
1563 |
|
---|
1564 | /**
|
---|
1565 | * Move the file descriptor to somewhere at @a fdMin or above.
|
---|
1566 | *
|
---|
1567 | * @returns the new file descriptor success, -1 and errno on failure.
|
---|
1568 | * @param pfdtab The file descriptor table.
|
---|
1569 | * @param fdfrom The descriptor to move.
|
---|
1570 | * @param fdMin The minimum descriptor.
|
---|
1571 | */
|
---|
1572 | int shfile_movefd_above(shfdtab *pfdtab, int fdfrom, int fdMin)
|
---|
1573 | {
|
---|
1574 | #ifdef SHFILE_IN_USE
|
---|
1575 | int fdto;
|
---|
1576 | shmtxtmp tmp;
|
---|
1577 | shfile *file = shfile_get(pfdtab, fdfrom, &tmp);
|
---|
1578 | if (file)
|
---|
1579 | {
|
---|
1580 | /* find a new place */
|
---|
1581 | int i;
|
---|
1582 | fdto = -1;
|
---|
1583 | for (i = fdMin; (unsigned)i < pfdtab->size; i++)
|
---|
1584 | if (pfdtab->tab[i].fd == -1)
|
---|
1585 | {
|
---|
1586 | fdto = i;
|
---|
1587 | break;
|
---|
1588 | }
|
---|
1589 | if (fdto == -1)
|
---|
1590 | fdto = shfile_grow_tab_locked(pfdtab, fdMin);
|
---|
1591 | if (fdto != -1)
|
---|
1592 | {
|
---|
1593 | /* setup the target. */
|
---|
1594 | pfdtab->tab[fdto].fd = fdto;
|
---|
1595 | pfdtab->tab[fdto].oflags = file->oflags;
|
---|
1596 | pfdtab->tab[fdto].shflags = file->shflags;
|
---|
1597 | pfdtab->tab[fdto].native = file->native;
|
---|
1598 | # ifdef DEBUG
|
---|
1599 | pfdtab->tab[fdto].dbgname = file->dbgname;
|
---|
1600 | # endif
|
---|
1601 |
|
---|
1602 | /* close the source. */
|
---|
1603 | file->fd = -1;
|
---|
1604 | file->oflags = 0;
|
---|
1605 | file->shflags = 0;
|
---|
1606 | file->native = -1;
|
---|
1607 | # ifdef DEBUG
|
---|
1608 | file->dbgname = NULL;
|
---|
1609 | # endif
|
---|
1610 | }
|
---|
1611 | else
|
---|
1612 | {
|
---|
1613 | errno = EMFILE;
|
---|
1614 | fdto = -1;
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 | shfile_put(pfdtab, file, &tmp);
|
---|
1618 | }
|
---|
1619 | else
|
---|
1620 | fdto = -1;
|
---|
1621 | return fdto;
|
---|
1622 |
|
---|
1623 | #else
|
---|
1624 | int fdnew = fcntl(fdfrom, F_DUPFD, fdMin);
|
---|
1625 | if (fdnew >= 0)
|
---|
1626 | close(fdfrom);
|
---|
1627 | return fdnew;
|
---|
1628 | #endif
|
---|
1629 | }
|
---|
1630 |
|
---|
1631 | /**
|
---|
1632 | * close().
|
---|
1633 | */
|
---|
1634 | int shfile_close(shfdtab *pfdtab, unsigned fd)
|
---|
1635 | {
|
---|
1636 | int rc;
|
---|
1637 | #ifdef SHFILE_IN_USE
|
---|
1638 | shmtxtmp tmp;
|
---|
1639 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
1640 | if (file)
|
---|
1641 | {
|
---|
1642 | shfile_native_close(file->native, file);
|
---|
1643 |
|
---|
1644 | file->fd = -1;
|
---|
1645 | file->oflags = 0;
|
---|
1646 | file->shflags = 0;
|
---|
1647 | file->native = -1;
|
---|
1648 | # ifdef DEBUG
|
---|
1649 | sh_free(NULL, file->dbgname);
|
---|
1650 | file->dbgname = NULL;
|
---|
1651 | # endif
|
---|
1652 |
|
---|
1653 | shfile_put(pfdtab, file, &tmp);
|
---|
1654 | rc = 0;
|
---|
1655 | }
|
---|
1656 | else
|
---|
1657 | rc = -1;
|
---|
1658 |
|
---|
1659 | #else
|
---|
1660 | rc = close(fd);
|
---|
1661 | #endif
|
---|
1662 |
|
---|
1663 | TRACE2((NULL, "shfile_close(%d) -> %d [%d]\n", fd, rc, errno));
|
---|
1664 | return rc;
|
---|
1665 | }
|
---|
1666 |
|
---|
1667 | /**
|
---|
1668 | * read().
|
---|
1669 | */
|
---|
1670 | long shfile_read(shfdtab *pfdtab, int fd, void *buf, size_t len)
|
---|
1671 | {
|
---|
1672 | long rc;
|
---|
1673 | #ifdef SHFILE_IN_USE
|
---|
1674 | shmtxtmp tmp;
|
---|
1675 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
1676 | if (file)
|
---|
1677 | {
|
---|
1678 | # if K_OS == K_OS_WINDOWS
|
---|
1679 | DWORD dwRead = 0;
|
---|
1680 | if (ReadFile((HANDLE)file->native, buf, (DWORD)len, &dwRead, NULL))
|
---|
1681 | rc = dwRead;
|
---|
1682 | else
|
---|
1683 | rc = shfile_dos2errno(GetLastError());
|
---|
1684 | # else
|
---|
1685 | rc = read(file->native, buf, len);
|
---|
1686 | # endif
|
---|
1687 |
|
---|
1688 | shfile_put(pfdtab, file, &tmp);
|
---|
1689 | }
|
---|
1690 | else
|
---|
1691 | rc = -1;
|
---|
1692 |
|
---|
1693 | #else
|
---|
1694 | rc = read(fd, buf, len);
|
---|
1695 | #endif
|
---|
1696 | return rc;
|
---|
1697 | }
|
---|
1698 |
|
---|
1699 | /**
|
---|
1700 | * write().
|
---|
1701 | */
|
---|
1702 | long shfile_write(shfdtab *pfdtab, int fd, const void *buf, size_t len)
|
---|
1703 | {
|
---|
1704 | long rc;
|
---|
1705 | #ifdef SHFILE_IN_USE
|
---|
1706 | shmtxtmp tmp;
|
---|
1707 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
1708 | if (file)
|
---|
1709 | {
|
---|
1710 | # if K_OS == K_OS_WINDOWS
|
---|
1711 | DWORD dwWritten = 0;
|
---|
1712 | if (WriteFile((HANDLE)file->native, buf, (DWORD)len, &dwWritten, NULL))
|
---|
1713 | rc = dwWritten;
|
---|
1714 | else
|
---|
1715 | rc = shfile_dos2errno(GetLastError());
|
---|
1716 | # else
|
---|
1717 | rc = write(file->native, buf, len);
|
---|
1718 | # endif
|
---|
1719 |
|
---|
1720 | shfile_put(pfdtab, file, &tmp);
|
---|
1721 | }
|
---|
1722 | else
|
---|
1723 | rc = -1;
|
---|
1724 |
|
---|
1725 | # ifdef DEBUG
|
---|
1726 | if (fd != shthread_get_shell()->tracefd)
|
---|
1727 | TRACE2((NULL, "shfile_write(%d,,%d) -> %d [%d]\n", fd, len, rc, errno));
|
---|
1728 | # endif
|
---|
1729 |
|
---|
1730 | #else
|
---|
1731 | if (fd != shthread_get_shell()->tracefd)
|
---|
1732 | {
|
---|
1733 | int iSavedErrno = errno;
|
---|
1734 | struct stat s;
|
---|
1735 | int x;
|
---|
1736 | x = fstat(fd, &s);
|
---|
1737 | TRACE2((NULL, "shfile_write(%d) - %lu bytes (%d) - pos %lu - before; %o\n",
|
---|
1738 | fd, (long)s.st_size, x, (long)lseek(fd, 0, SEEK_CUR), s.st_mode ));
|
---|
1739 | K_NOREF(x);
|
---|
1740 | errno = iSavedErrno;
|
---|
1741 | }
|
---|
1742 |
|
---|
1743 | rc = write(fd, buf, len);
|
---|
1744 | #endif
|
---|
1745 | return rc;
|
---|
1746 | }
|
---|
1747 |
|
---|
1748 | /**
|
---|
1749 | * lseek().
|
---|
1750 | */
|
---|
1751 | long shfile_lseek(shfdtab *pfdtab, int fd, long off, int whench)
|
---|
1752 | {
|
---|
1753 | long rc;
|
---|
1754 | #ifdef SHFILE_IN_USE
|
---|
1755 | shmtxtmp tmp;
|
---|
1756 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
1757 | if (file)
|
---|
1758 | {
|
---|
1759 | # if K_OS == K_OS_WINDOWS
|
---|
1760 | assert(SEEK_SET == FILE_BEGIN);
|
---|
1761 | assert(SEEK_CUR == FILE_CURRENT);
|
---|
1762 | assert(SEEK_END == FILE_END);
|
---|
1763 | rc = SetFilePointer((HANDLE)file->native, off, NULL, whench);
|
---|
1764 | if (rc == INVALID_SET_FILE_POINTER)
|
---|
1765 | rc = shfile_dos2errno(GetLastError());
|
---|
1766 | # else
|
---|
1767 | rc = lseek(file->native, off, whench);
|
---|
1768 | # endif
|
---|
1769 |
|
---|
1770 | shfile_put(pfdtab, file, &tmp);
|
---|
1771 | }
|
---|
1772 | else
|
---|
1773 | rc = -1;
|
---|
1774 |
|
---|
1775 | #else
|
---|
1776 | rc = lseek(fd, off, whench);
|
---|
1777 | #endif
|
---|
1778 |
|
---|
1779 | return rc;
|
---|
1780 | }
|
---|
1781 |
|
---|
1782 | int shfile_fcntl(shfdtab *pfdtab, int fd, int cmd, int arg)
|
---|
1783 | {
|
---|
1784 | int rc;
|
---|
1785 | #ifdef SHFILE_IN_USE
|
---|
1786 | shmtxtmp tmp;
|
---|
1787 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
1788 | if (file)
|
---|
1789 | {
|
---|
1790 | switch (cmd)
|
---|
1791 | {
|
---|
1792 | case F_GETFL:
|
---|
1793 | rc = file->oflags;
|
---|
1794 | break;
|
---|
1795 |
|
---|
1796 | case F_SETFL:
|
---|
1797 | {
|
---|
1798 | unsigned mask = O_NONBLOCK | O_APPEND | O_BINARY | O_TEXT;
|
---|
1799 | # ifdef O_DIRECT
|
---|
1800 | mask |= O_DIRECT;
|
---|
1801 | # endif
|
---|
1802 | # ifdef O_ASYNC
|
---|
1803 | mask |= O_ASYNC;
|
---|
1804 | # endif
|
---|
1805 | # ifdef O_SYNC
|
---|
1806 | mask |= O_SYNC;
|
---|
1807 | # endif
|
---|
1808 | if ((file->oflags & mask) == (arg & mask))
|
---|
1809 | rc = 0;
|
---|
1810 | else
|
---|
1811 | {
|
---|
1812 | # if K_OS == K_OS_WINDOWS
|
---|
1813 | assert(0);
|
---|
1814 | errno = EINVAL;
|
---|
1815 | rc = -1;
|
---|
1816 | # else
|
---|
1817 | rc = fcntl(file->native, F_SETFL, arg);
|
---|
1818 | if (rc != -1)
|
---|
1819 | file->oflags = (file->oflags & ~mask) | (arg & mask);
|
---|
1820 | # endif
|
---|
1821 | }
|
---|
1822 | break;
|
---|
1823 | }
|
---|
1824 |
|
---|
1825 | case F_DUPFD:
|
---|
1826 | {
|
---|
1827 | # if K_OS == K_OS_WINDOWS
|
---|
1828 | HANDLE hNew = INVALID_HANDLE_VALUE;
|
---|
1829 | if (DuplicateHandle(GetCurrentProcess(),
|
---|
1830 | (HANDLE)file->native,
|
---|
1831 | GetCurrentProcess(),
|
---|
1832 | &hNew,
|
---|
1833 | 0,
|
---|
1834 | FALSE /* bInheritHandle */,
|
---|
1835 | DUPLICATE_SAME_ACCESS))
|
---|
1836 | rc = shfile_insert(pfdtab, (intptr_t)hNew, file->oflags, file->shflags, arg,
|
---|
1837 | "shfile_fcntl", SHFILE_DBGNAME(file->dbgname));
|
---|
1838 | else
|
---|
1839 | rc = shfile_dos2errno(GetLastError());
|
---|
1840 | # else
|
---|
1841 | int nativeNew = fcntl(file->native, F_DUPFD, SHFILE_UNIX_MIN_FD);
|
---|
1842 | if (nativeNew != -1)
|
---|
1843 | rc = shfile_insert(pfdtab, nativeNew, file->oflags, file->shflags, arg,
|
---|
1844 | "shfile_fcntl", SHFILE_DBGNAME(file->dbgname));
|
---|
1845 | else
|
---|
1846 | rc = -1;
|
---|
1847 | # endif
|
---|
1848 | break;
|
---|
1849 | }
|
---|
1850 |
|
---|
1851 | default:
|
---|
1852 | errno = -EINVAL;
|
---|
1853 | rc = -1;
|
---|
1854 | break;
|
---|
1855 | }
|
---|
1856 |
|
---|
1857 | shfile_put(pfdtab, file, &tmp);
|
---|
1858 | }
|
---|
1859 | else
|
---|
1860 | rc = -1;
|
---|
1861 |
|
---|
1862 | #else
|
---|
1863 | rc = fcntl(fd, cmd, arg);
|
---|
1864 | #endif
|
---|
1865 |
|
---|
1866 | switch (cmd)
|
---|
1867 | {
|
---|
1868 | case F_GETFL: TRACE2((NULL, "shfile_fcntl(%d,F_GETFL,ignored=%d) -> %d [%d]\n", fd, arg, rc, errno)); break;
|
---|
1869 | case F_SETFL: TRACE2((NULL, "shfile_fcntl(%d,F_SETFL,newflags=%#x) -> %d [%d]\n", fd, arg, rc, errno)); break;
|
---|
1870 | case F_DUPFD: TRACE2((NULL, "shfile_fcntl(%d,F_DUPFD,minfd=%d) -> %d [%d]\n", fd, arg, rc, errno)); break;
|
---|
1871 | default: TRACE2((NULL, "shfile_fcntl(%d,%d,%d) -> %d [%d]\n", fd, cmd, arg, rc, errno)); break;
|
---|
1872 | }
|
---|
1873 | return rc;
|
---|
1874 | }
|
---|
1875 |
|
---|
1876 | int shfile_stat(shfdtab *pfdtab, const char *path, struct stat *pst)
|
---|
1877 | {
|
---|
1878 | #ifdef SHFILE_IN_USE
|
---|
1879 | char abspath[SHFILE_MAX_PATH];
|
---|
1880 | int rc;
|
---|
1881 | rc = shfile_make_path(pfdtab, path, &abspath[0]);
|
---|
1882 | if (!rc)
|
---|
1883 | {
|
---|
1884 | # if K_OS == K_OS_WINDOWS
|
---|
1885 | int dir_slash = shfile_trailing_slash_hack(abspath);
|
---|
1886 | rc = stat(abspath, pst); /** @todo re-implement stat. */
|
---|
1887 | if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
|
---|
1888 | {
|
---|
1889 | rc = -1;
|
---|
1890 | errno = ENOTDIR;
|
---|
1891 | }
|
---|
1892 | # else
|
---|
1893 | rc = stat(abspath, pst);
|
---|
1894 | # endif
|
---|
1895 | }
|
---|
1896 | TRACE2((NULL, "shfile_stat(,%s,) -> %d [%d]\n", path, rc, errno));
|
---|
1897 | return rc;
|
---|
1898 | #else
|
---|
1899 | return stat(path, pst);
|
---|
1900 | #endif
|
---|
1901 | }
|
---|
1902 |
|
---|
1903 | int shfile_lstat(shfdtab *pfdtab, const char *path, struct stat *pst)
|
---|
1904 | {
|
---|
1905 | int rc;
|
---|
1906 | #ifdef SHFILE_IN_USE
|
---|
1907 | char abspath[SHFILE_MAX_PATH];
|
---|
1908 |
|
---|
1909 | rc = shfile_make_path(pfdtab, path, &abspath[0]);
|
---|
1910 | if (!rc)
|
---|
1911 | {
|
---|
1912 | # if K_OS == K_OS_WINDOWS
|
---|
1913 | int dir_slash = shfile_trailing_slash_hack(abspath);
|
---|
1914 | rc = stat(abspath, pst); /** @todo re-implement stat. */
|
---|
1915 | if (!rc && dir_slash && !S_ISDIR(pst->st_mode))
|
---|
1916 | {
|
---|
1917 | rc = -1;
|
---|
1918 | errno = ENOTDIR;
|
---|
1919 | }
|
---|
1920 | # else
|
---|
1921 | rc = lstat(abspath, pst);
|
---|
1922 | # endif
|
---|
1923 | }
|
---|
1924 | #else
|
---|
1925 | rc = stat(path, pst);
|
---|
1926 | #endif
|
---|
1927 | TRACE2((NULL, "shfile_stat(,%s,) -> %d [%d]\n", path, rc, errno));
|
---|
1928 | return rc;
|
---|
1929 | }
|
---|
1930 |
|
---|
1931 | /**
|
---|
1932 | * chdir().
|
---|
1933 | */
|
---|
1934 | int shfile_chdir(shfdtab *pfdtab, const char *path)
|
---|
1935 | {
|
---|
1936 | int rc;
|
---|
1937 | #ifdef SHFILE_IN_USE
|
---|
1938 | shinstance *psh = shthread_get_shell();
|
---|
1939 | char abspath[SHFILE_MAX_PATH];
|
---|
1940 |
|
---|
1941 | rc = shfile_make_path(pfdtab, path, &abspath[0]);
|
---|
1942 | if (!rc)
|
---|
1943 | {
|
---|
1944 | char *abspath_copy = sh_strdup(psh, abspath);
|
---|
1945 | char *free_me = abspath_copy;
|
---|
1946 | rc = chdir(abspath);
|
---|
1947 | if (!rc)
|
---|
1948 | {
|
---|
1949 | shmtxtmp tmp;
|
---|
1950 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1951 |
|
---|
1952 | shfile_fix_slashes(abspath_copy);
|
---|
1953 | free_me = pfdtab->cwd;
|
---|
1954 | pfdtab->cwd = abspath_copy;
|
---|
1955 |
|
---|
1956 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
1957 | }
|
---|
1958 | sh_free(psh, free_me);
|
---|
1959 | }
|
---|
1960 | else
|
---|
1961 | rc = -1;
|
---|
1962 | #else
|
---|
1963 | rc = chdir(path);
|
---|
1964 | #endif
|
---|
1965 |
|
---|
1966 | TRACE2((NULL, "shfile_chdir(,%s) -> %d [%d]\n", path, rc, errno));
|
---|
1967 | return rc;
|
---|
1968 | }
|
---|
1969 |
|
---|
1970 | /**
|
---|
1971 | * getcwd().
|
---|
1972 | */
|
---|
1973 | char *shfile_getcwd(shfdtab *pfdtab, char *buf, int size)
|
---|
1974 | {
|
---|
1975 | char *ret;
|
---|
1976 | #ifdef SHFILE_IN_USE
|
---|
1977 |
|
---|
1978 | ret = NULL;
|
---|
1979 | if (buf && !size)
|
---|
1980 | errno = -EINVAL;
|
---|
1981 | else
|
---|
1982 | {
|
---|
1983 | size_t cwd_size;
|
---|
1984 | shmtxtmp tmp;
|
---|
1985 | shmtx_enter(&pfdtab->mtx, &tmp);
|
---|
1986 |
|
---|
1987 | cwd_size = strlen(pfdtab->cwd) + 1;
|
---|
1988 | if (buf)
|
---|
1989 | {
|
---|
1990 | if (cwd_size <= (size_t)size)
|
---|
1991 | ret = memcpy(buf, pfdtab->cwd, cwd_size);
|
---|
1992 | else
|
---|
1993 | errno = ERANGE;
|
---|
1994 | }
|
---|
1995 | else
|
---|
1996 | {
|
---|
1997 | if ((size_t)size < cwd_size)
|
---|
1998 | size = (int)cwd_size;
|
---|
1999 | ret = sh_malloc(shthread_get_shell(), size);
|
---|
2000 | if (ret)
|
---|
2001 | ret = memcpy(ret, pfdtab->cwd, cwd_size);
|
---|
2002 | else
|
---|
2003 | errno = ENOMEM;
|
---|
2004 | }
|
---|
2005 |
|
---|
2006 | shmtx_leave(&pfdtab->mtx, &tmp);
|
---|
2007 | }
|
---|
2008 | #else
|
---|
2009 | ret = getcwd(buf, size);
|
---|
2010 | #endif
|
---|
2011 |
|
---|
2012 | TRACE2((NULL, "shfile_getcwd(,%p,%d) -> %s [%d]\n", buf, size, ret, errno));
|
---|
2013 | return ret;
|
---|
2014 | }
|
---|
2015 |
|
---|
2016 | /**
|
---|
2017 | * access().
|
---|
2018 | */
|
---|
2019 | int shfile_access(shfdtab *pfdtab, const char *path, int type)
|
---|
2020 | {
|
---|
2021 | int rc;
|
---|
2022 | #ifdef SHFILE_IN_USE
|
---|
2023 | char abspath[SHFILE_MAX_PATH];
|
---|
2024 |
|
---|
2025 | rc = shfile_make_path(pfdtab, path, &abspath[0]);
|
---|
2026 | if (!rc)
|
---|
2027 | {
|
---|
2028 | # ifdef _MSC_VER
|
---|
2029 | if (type & X_OK)
|
---|
2030 | type = (type & ~X_OK) | R_OK;
|
---|
2031 | # endif
|
---|
2032 | rc = access(abspath, type);
|
---|
2033 | }
|
---|
2034 | #else
|
---|
2035 | # ifdef _MSC_VER
|
---|
2036 | if (type & X_OK)
|
---|
2037 | type = (type & ~X_OK) | R_OK;
|
---|
2038 | # endif
|
---|
2039 | rc = access(path, type);
|
---|
2040 | #endif
|
---|
2041 |
|
---|
2042 | TRACE2((NULL, "shfile_access(,%s,%#x) -> %d [%d]\n", path, type, rc, errno));
|
---|
2043 | return rc;
|
---|
2044 | }
|
---|
2045 |
|
---|
2046 | /**
|
---|
2047 | * isatty()
|
---|
2048 | */
|
---|
2049 | int shfile_isatty(shfdtab *pfdtab, int fd)
|
---|
2050 | {
|
---|
2051 | int rc;
|
---|
2052 | #ifdef SHFILE_IN_USE
|
---|
2053 | shmtxtmp tmp;
|
---|
2054 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
2055 | if (file)
|
---|
2056 | {
|
---|
2057 | # if K_OS == K_OS_WINDOWS
|
---|
2058 | rc = (file->shflags & SHFILE_FLAGS_TYPE_MASK) == SHFILE_FLAGS_TTY;
|
---|
2059 | # else
|
---|
2060 | rc = isatty(file->native);
|
---|
2061 | # endif
|
---|
2062 | shfile_put(pfdtab, file, &tmp);
|
---|
2063 | }
|
---|
2064 | else
|
---|
2065 | rc = 0;
|
---|
2066 | #else
|
---|
2067 | rc = isatty(fd);
|
---|
2068 | #endif
|
---|
2069 |
|
---|
2070 | TRACE2((NULL, "isatty(%d) -> %d [%d]\n", fd, rc, errno));
|
---|
2071 | return rc;
|
---|
2072 | }
|
---|
2073 |
|
---|
2074 | /**
|
---|
2075 | * fcntl F_SETFD / FD_CLOEXEC.
|
---|
2076 | */
|
---|
2077 | int shfile_cloexec(shfdtab *pfdtab, int fd, int closeit)
|
---|
2078 | {
|
---|
2079 | int rc;
|
---|
2080 | #ifdef SHFILE_IN_USE
|
---|
2081 | shmtxtmp tmp;
|
---|
2082 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
2083 | if (file)
|
---|
2084 | {
|
---|
2085 | if (closeit)
|
---|
2086 | file->shflags |= SHFILE_FLAGS_CLOSE_ON_EXEC;
|
---|
2087 | else
|
---|
2088 | file->shflags &= ~SHFILE_FLAGS_CLOSE_ON_EXEC;
|
---|
2089 | shfile_put(pfdtab, file, &tmp);
|
---|
2090 | rc = 0;
|
---|
2091 | }
|
---|
2092 | else
|
---|
2093 | rc = -1;
|
---|
2094 | #else
|
---|
2095 | rc = fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0)
|
---|
2096 | | (closeit ? FD_CLOEXEC : 0));
|
---|
2097 | #endif
|
---|
2098 |
|
---|
2099 | TRACE2((NULL, "shfile_cloexec(%d, %d) -> %d [%d]\n", fd, closeit, rc, errno));
|
---|
2100 | return rc;
|
---|
2101 | }
|
---|
2102 |
|
---|
2103 | /**
|
---|
2104 | * Sets the SHFILE_FLAGS_TRACE flag.
|
---|
2105 | */
|
---|
2106 | int shfile_set_trace(shfdtab *pfdtab, int fd)
|
---|
2107 | {
|
---|
2108 | int rc;
|
---|
2109 | #ifdef SHFILE_IN_USE
|
---|
2110 | shmtxtmp tmp;
|
---|
2111 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
2112 | if (file)
|
---|
2113 | {
|
---|
2114 | file->shflags |= SHFILE_FLAGS_TRACE;
|
---|
2115 | shfile_put(pfdtab, file, &tmp);
|
---|
2116 | rc = 0;
|
---|
2117 | }
|
---|
2118 | else
|
---|
2119 | rc = -1;
|
---|
2120 | #else
|
---|
2121 | rc = 0;
|
---|
2122 | #endif
|
---|
2123 |
|
---|
2124 | TRACE2((NULL, "shfile_set_trace(%d) -> %d\n", fd, rc));
|
---|
2125 | return rc;
|
---|
2126 | }
|
---|
2127 |
|
---|
2128 |
|
---|
2129 | int shfile_ioctl(shfdtab *pfdtab, int fd, unsigned long request, void *buf)
|
---|
2130 | {
|
---|
2131 | int rc;
|
---|
2132 | #ifdef SHFILE_IN_USE
|
---|
2133 | shmtxtmp tmp;
|
---|
2134 | shfile *file = shfile_get(pfdtab, fd, &tmp);
|
---|
2135 | if (file)
|
---|
2136 | {
|
---|
2137 | # if K_OS == K_OS_WINDOWS
|
---|
2138 | rc = -1;
|
---|
2139 | errno = ENOSYS;
|
---|
2140 | # else
|
---|
2141 | rc = ioctl(file->native, request, buf);
|
---|
2142 | # endif
|
---|
2143 | shfile_put(pfdtab, file, &tmp);
|
---|
2144 | }
|
---|
2145 | else
|
---|
2146 | rc = -1;
|
---|
2147 | #else
|
---|
2148 | rc = ioctl(fd, request, buf);
|
---|
2149 | #endif
|
---|
2150 |
|
---|
2151 | TRACE2((NULL, "ioctl(%d, %#x, %p) -> %d\n", fd, request, buf, rc));
|
---|
2152 | return rc;
|
---|
2153 | }
|
---|
2154 |
|
---|
2155 |
|
---|
2156 | mode_t shfile_get_umask(shfdtab *pfdtab)
|
---|
2157 | {
|
---|
2158 | /** @todo */
|
---|
2159 | return 022;
|
---|
2160 | }
|
---|
2161 |
|
---|
2162 | void shfile_set_umask(shfdtab *pfdtab, mode_t mask)
|
---|
2163 | {
|
---|
2164 | /** @todo */
|
---|
2165 | (void)mask;
|
---|
2166 | }
|
---|
2167 |
|
---|
2168 |
|
---|
2169 |
|
---|
2170 | shdir *shfile_opendir(shfdtab *pfdtab, const char *dir)
|
---|
2171 | {
|
---|
2172 | #if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
|
---|
2173 | shdir *pdir = NULL;
|
---|
2174 |
|
---|
2175 | TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
|
---|
2176 | shfile_init_globals();
|
---|
2177 | if (g_pfnNtQueryDirectoryFile)
|
---|
2178 | {
|
---|
2179 | char abspath[SHFILE_MAX_PATH];
|
---|
2180 | if (shfile_make_path(pfdtab, dir, &abspath[0]) == 0)
|
---|
2181 | {
|
---|
2182 | HANDLE hFile;
|
---|
2183 | SECURITY_ATTRIBUTES SecurityAttributes;
|
---|
2184 |
|
---|
2185 | SecurityAttributes.nLength = sizeof(SecurityAttributes);
|
---|
2186 | SecurityAttributes.lpSecurityDescriptor = NULL;
|
---|
2187 | SecurityAttributes.bInheritHandle = FALSE;
|
---|
2188 |
|
---|
2189 | hFile = CreateFileA(abspath,
|
---|
2190 | GENERIC_READ,
|
---|
2191 | FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
|
---|
2192 | &SecurityAttributes,
|
---|
2193 | OPEN_EXISTING,
|
---|
2194 | FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS,
|
---|
2195 | NULL /* hTemplateFile */);
|
---|
2196 | if (hFile != INVALID_HANDLE_VALUE)
|
---|
2197 | {
|
---|
2198 | pdir = (shdir *)sh_malloc(shthread_get_shell(), sizeof(*pdir));
|
---|
2199 | if (pdir)
|
---|
2200 | {
|
---|
2201 | pdir->pfdtab = pfdtab;
|
---|
2202 | pdir->native = hFile;
|
---|
2203 | pdir->off = ~(size_t)0;
|
---|
2204 | }
|
---|
2205 | else
|
---|
2206 | CloseHandle(hFile);
|
---|
2207 | }
|
---|
2208 | else
|
---|
2209 | {
|
---|
2210 | errno = shfile_dos2errno(GetLastError());
|
---|
2211 | TRACE2((NULL, "shfile_opendir: CreateFileA(%s) -> %d/%d\n", abspath, GetLastError(), errno));
|
---|
2212 | }
|
---|
2213 | }
|
---|
2214 | }
|
---|
2215 | else
|
---|
2216 | errno = ENOSYS;
|
---|
2217 | return pdir;
|
---|
2218 | #else
|
---|
2219 | TRACE2((NULL, "shfile_opendir: dir='%s'\n", dir));
|
---|
2220 | return (shdir *)opendir(dir);
|
---|
2221 | #endif
|
---|
2222 | }
|
---|
2223 |
|
---|
2224 | shdirent *shfile_readdir(struct shdir *pdir)
|
---|
2225 | {
|
---|
2226 | #if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
|
---|
2227 | if (pdir)
|
---|
2228 | {
|
---|
2229 | NTSTATUS rcNt;
|
---|
2230 |
|
---|
2231 | if ( pdir->off == ~(size_t)0
|
---|
2232 | || pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) >= pdir->cb)
|
---|
2233 | {
|
---|
2234 | MY_IO_STATUS_BLOCK Ios;
|
---|
2235 |
|
---|
2236 | memset(&Ios, 0, sizeof(Ios));
|
---|
2237 | rcNt = g_pfnNtQueryDirectoryFile(pdir->native,
|
---|
2238 | NULL /*Event*/,
|
---|
2239 | NULL /*ApcRoutine*/,
|
---|
2240 | NULL /*ApcContext*/,
|
---|
2241 | &Ios,
|
---|
2242 | &pdir->buf[0],
|
---|
2243 | sizeof(pdir->buf),
|
---|
2244 | MY_FileNamesInformation,
|
---|
2245 | FALSE /*ReturnSingleEntry*/,
|
---|
2246 | NULL /*FileName*/,
|
---|
2247 | pdir->off == ~(size_t)0 /*RestartScan*/);
|
---|
2248 | if (rcNt >= 0 && rcNt != STATUS_PENDING)
|
---|
2249 | {
|
---|
2250 | pdir->cb = Ios.Information;
|
---|
2251 | pdir->off = 0;
|
---|
2252 | }
|
---|
2253 | else if (rcNt == STATUS_NO_MORE_FILES)
|
---|
2254 | errno = 0; /* wrong? */
|
---|
2255 | else
|
---|
2256 | shfile_nt2errno(rcNt);
|
---|
2257 | }
|
---|
2258 |
|
---|
2259 | if ( pdir->off != ~(size_t)0
|
---|
2260 | && pdir->off + sizeof(MY_FILE_NAMES_INFORMATION) <= pdir->cb)
|
---|
2261 | {
|
---|
2262 | PMY_FILE_NAMES_INFORMATION pcur = (PMY_FILE_NAMES_INFORMATION)&pdir->buf[pdir->off];
|
---|
2263 | ANSI_STRING astr;
|
---|
2264 | UNICODE_STRING ustr;
|
---|
2265 |
|
---|
2266 | astr.Length = astr.MaximumLength = sizeof(pdir->ent.name);
|
---|
2267 | astr.Buffer = &pdir->ent.name[0];
|
---|
2268 |
|
---|
2269 | ustr.Length = ustr.MaximumLength = pcur->FileNameLength < ~(USHORT)0 ? (USHORT)pcur->FileNameLength : ~(USHORT)0;
|
---|
2270 | ustr.Buffer = &pcur->FileName[0];
|
---|
2271 |
|
---|
2272 | rcNt = g_pfnRtlUnicodeStringToAnsiString(&astr, &ustr, 0/*AllocateDestinationString*/);
|
---|
2273 | if (rcNt < 0)
|
---|
2274 | sprintf(pdir->ent.name, "conversion-failed-%08x-rcNt=%08x-len=%u",
|
---|
2275 | pcur->FileIndex, rcNt, pcur->FileNameLength);
|
---|
2276 | if (pcur->NextEntryOffset)
|
---|
2277 | pdir->off += pcur->NextEntryOffset;
|
---|
2278 | else
|
---|
2279 | pdir->off = pdir->cb;
|
---|
2280 | return &pdir->ent;
|
---|
2281 | }
|
---|
2282 | }
|
---|
2283 | else
|
---|
2284 | errno = EINVAL;
|
---|
2285 | return NULL;
|
---|
2286 | #else
|
---|
2287 | struct dirent *pde = readdir((DIR *)pdir);
|
---|
2288 | return pde ? (shdirent *)&pde->d_name[0] : NULL;
|
---|
2289 | #endif
|
---|
2290 | }
|
---|
2291 |
|
---|
2292 | void shfile_closedir(struct shdir *pdir)
|
---|
2293 | {
|
---|
2294 | #if defined(SHFILE_IN_USE) && K_OS == K_OS_WINDOWS
|
---|
2295 | if (pdir)
|
---|
2296 | {
|
---|
2297 | CloseHandle(pdir->native);
|
---|
2298 | pdir->pfdtab = NULL;
|
---|
2299 | pdir->native = INVALID_HANDLE_VALUE;
|
---|
2300 | sh_free(shthread_get_shell(), pdir);
|
---|
2301 | }
|
---|
2302 | else
|
---|
2303 | errno = EINVAL;
|
---|
2304 | #else
|
---|
2305 | closedir((DIR *)pdir);
|
---|
2306 | #endif
|
---|
2307 | }
|
---|
2308 |
|
---|