| 1 | /*************************************************************************** |
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| 2 | * ioFileRegular.cc |
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| 3 | * |
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| 4 | * Wed Oct 8 2005 |
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| 5 | * Copyright 2005 Dmytro Milinevskyy |
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| 6 | * milinevskyy@gmail.com |
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| 7 | ****************************************************************************/ |
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| 8 | |
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| 9 | /* |
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| 10 | * This program is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU Lesser General Public License version 2.1 as published by |
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| 12 | * the Free Software Foundation; |
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| 13 | * |
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| 14 | * This program is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU Library General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU Lesser General Public License |
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| 20 | * along with this program; if not, write to the Free Software |
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| 21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 22 | */ |
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| 23 | |
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| 24 | /** |
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| 25 | * vim indentation settings |
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| 26 | * set tabstop=4 |
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| 27 | * set shiftwidth=4 |
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| 28 | */ |
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| 29 | |
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| 30 | #include <libdodo/directives.h> |
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| 31 | |
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| 32 | #include <unistd.h> |
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| 33 | #include <sys/types.h> |
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| 34 | #include <sys/stat.h> |
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| 35 | #include <errno.h> |
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| 36 | #include <string.h> |
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| 37 | |
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| 38 | #include "ioFile.inline" |
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| 39 | |
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| 40 | #include <libdodo/ioFileRegular.h> |
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| 41 | #include <libdodo/toolsFilesystem.h> |
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| 42 | #include <libdodo/ioFileRegularEx.h> |
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| 43 | #include <libdodo/types.h> |
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| 44 | #include <libdodo/pcSyncStack.h> |
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| 45 | #include <libdodo/ioChannel.h> |
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| 46 | #include <libdodo/ioBlockChannel.h> |
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| 47 | |
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| 48 | using namespace dodo::io::file; |
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| 49 | |
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| 50 | regular::regular(short protection) : block::channel(protection), |
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| 51 | handle(new io::__file__) |
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| 52 | { |
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| 53 | #ifndef IO_WO_XEXEC |
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| 54 | collectedData.setExecObject(xexec::OBJECT_IOFILEREGULAR); |
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| 55 | #endif |
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| 56 | } |
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| 57 | |
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| 58 | //------------------------------------------------------------------- |
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| 59 | |
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| 60 | regular::regular(const dodo::string &a_path, |
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| 61 | short a_mode, |
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| 62 | short protection) : block::channel(protection), |
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| 63 | path(a_path), |
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| 64 | mode(a_mode), |
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| 65 | handle(new io::__file__) |
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| 66 | { |
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| 67 | #ifndef IO_WO_XEXEC |
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| 68 | collectedData.setExecObject(xexec::OBJECT_IOFILEREGULAR); |
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| 69 | #endif |
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| 70 | |
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| 71 | bool exists(false); |
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| 72 | |
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| 73 | if (path.size() == 0) { |
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| 74 | delete handle; |
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| 75 | |
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| 76 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_LIBDODO, REGULAREX_WRONGFILENAME, IOFILEREGULAREX_WRONGFILENAME_STR, __LINE__, __FILE__, path); |
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| 77 | } else { |
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| 78 | struct stat st; |
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| 79 | |
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| 80 | if (::lstat(path.data(), &st) == -1) { |
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| 81 | if (errno != ENOENT) { |
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| 82 | delete handle; |
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| 83 | |
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| 84 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 85 | } |
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| 86 | } else { |
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| 87 | exists = true; |
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| 88 | } |
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| 89 | |
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| 90 | if (exists && !S_ISREG(st.st_mode) && !S_ISBLK(st.st_mode)) { |
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| 91 | delete handle; |
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| 92 | |
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| 93 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_LIBDODO, REGULAREX_WRONGFILENAME, IOFILEREGULAREX_WRONGFILENAME_STR, __LINE__, __FILE__, path); |
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| 94 | } |
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| 95 | |
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| 96 | switch (mode) { |
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| 97 | case OPEN_MODE_READ_WRITE: |
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| 98 | |
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| 99 | handle->file = fopen(path.data(), "r+"); |
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| 100 | if (handle->file == NULL) |
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| 101 | handle->file = fopen(path.data(), "w+"); |
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| 102 | |
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| 103 | break; |
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| 104 | |
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| 105 | case OPEN_MODE_READ_WRITE_TRUNCATE: |
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| 106 | |
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| 107 | handle->file = fopen(path.data(), "w+"); |
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| 108 | |
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| 109 | break; |
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| 110 | |
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| 111 | case OPEN_MODE_READ_ONLY: |
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| 112 | default: |
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| 113 | |
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| 114 | handle->file = fopen(path.data(), "r"); |
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| 115 | } |
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| 116 | } |
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| 117 | |
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| 118 | if (handle->file == NULL) { |
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| 119 | delete handle; |
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| 120 | |
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| 121 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 122 | } |
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| 123 | |
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| 124 | if (!exists) { |
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| 125 | dodo_try { |
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| 126 | tools::filesystem::chmod(path, DEFAULT_FILE_PERM); |
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| 127 | } dodo_catch (exception::basic *e UNUSED) { |
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| 128 | delete handle; |
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| 129 | |
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| 130 | dodo_rethrow; |
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| 131 | } |
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| 132 | } |
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| 133 | } |
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| 134 | |
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| 135 | //------------------------------------------------------------------- |
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| 136 | |
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| 137 | regular::regular(const regular &fd) : block::channel(fd.protection), |
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| 138 | path(fd.path), |
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| 139 | mode(fd.mode), |
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| 140 | handle(new io::__file__) |
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| 141 | |
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| 142 | { |
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| 143 | #ifndef IO_WO_XEXEC |
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| 144 | collectedData.setExecObject(xexec::OBJECT_IOFILEREGULAR); |
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| 145 | #endif |
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| 146 | |
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| 147 | append = fd.append; |
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| 148 | pos = fd.pos; |
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| 149 | bs = fd.bs; |
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| 150 | |
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| 151 | if (fd.handle->file != NULL) { |
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| 152 | int oldDesc, newDesc; |
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| 153 | |
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| 154 | oldDesc = fileno(fd.handle->file); |
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| 155 | if (oldDesc == -1) { |
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| 156 | delete handle; |
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| 157 | |
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| 158 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 159 | } |
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| 160 | |
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| 161 | newDesc = dup(oldDesc); |
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| 162 | if (newDesc == -1) { |
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| 163 | delete handle; |
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| 164 | |
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| 165 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 166 | } |
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| 167 | |
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| 168 | switch (mode) { |
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| 169 | case OPEN_MODE_READ_WRITE: |
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| 170 | case OPEN_MODE_READ_WRITE_TRUNCATE: |
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| 171 | |
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| 172 | handle->file = fdopen(newDesc, "r+"); |
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| 173 | |
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| 174 | break; |
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| 175 | |
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| 176 | case OPEN_MODE_READ_ONLY: |
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| 177 | default: |
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| 178 | |
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| 179 | handle->file = fdopen(newDesc, "r"); |
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| 180 | } |
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| 181 | |
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| 182 | if (handle->file == NULL) { |
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| 183 | delete handle; |
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| 184 | |
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| 185 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_REGULAR, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 186 | } |
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| 187 | } |
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| 188 | } |
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| 189 | |
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| 190 | //------------------------------------------------------------------- |
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| 191 | |
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| 192 | regular::~regular() |
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| 193 | { |
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| 194 | if (handle->file != NULL) |
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| 195 | fclose(handle->file); |
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| 196 | |
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| 197 | delete handle; |
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| 198 | } |
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| 199 | |
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| 200 | //------------------------------------------------------------------- |
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| 201 | |
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| 202 | int |
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| 203 | regular::inDescriptor() const |
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| 204 | { |
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| 205 | pc::sync::stack pg(keeper); |
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| 206 | |
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| 207 | if (handle->file == NULL) |
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| 208 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_INDESCRIPTOR, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 209 | |
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| 210 | return fileno(handle->file); |
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| 211 | } |
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| 212 | |
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| 213 | //------------------------------------------------------------------- |
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| 214 | |
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| 215 | int |
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| 216 | regular::outDescriptor() const |
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| 217 | { |
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| 218 | pc::sync::stack pg(keeper); |
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| 219 | |
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| 220 | if (handle->file == NULL) |
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| 221 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OUTDESCRIPTOR, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 222 | |
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| 223 | return fileno(handle->file); |
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| 224 | } |
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| 225 | |
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| 226 | //------------------------------------------------------------------- |
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| 227 | |
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| 228 | void |
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| 229 | regular::clone(const regular &fd) |
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| 230 | { |
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| 231 | pc::sync::stack pg(keeper); |
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| 232 | |
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| 233 | if (handle->file != NULL) { |
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| 234 | if (fclose(handle->file) != 0) |
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| 235 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_CLONE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 236 | |
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| 237 | handle->file = NULL; |
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| 238 | } |
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| 239 | |
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| 240 | path = fd.path; |
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| 241 | mode = fd.mode; |
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| 242 | pos = fd.pos; |
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| 243 | append = fd.append; |
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| 244 | bs = fd.bs; |
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| 245 | |
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| 246 | if (fd.handle->file != NULL) { |
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| 247 | int oldDesc, newDesc; |
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| 248 | |
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| 249 | oldDesc = fileno(fd.handle->file); |
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| 250 | if (oldDesc == -1) |
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| 251 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_CLONE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 252 | |
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| 253 | newDesc = dup(oldDesc); |
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| 254 | if (newDesc == -1) |
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| 255 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_CLONE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 256 | |
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| 257 | switch (mode) { |
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| 258 | case OPEN_MODE_READ_WRITE: |
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| 259 | case OPEN_MODE_READ_WRITE_TRUNCATE: |
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| 260 | |
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| 261 | handle->file = fdopen(newDesc, "r+"); |
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| 262 | |
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| 263 | break; |
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| 264 | |
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| 265 | case OPEN_MODE_READ_ONLY: |
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| 266 | default: |
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| 267 | |
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| 268 | handle->file = fdopen(newDesc, "r"); |
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| 269 | } |
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| 270 | |
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| 271 | if (handle->file == NULL) |
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| 272 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_CLONE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 273 | } |
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| 274 | } |
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| 275 | |
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| 276 | //------------------------------------------------------------------- |
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| 277 | |
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| 278 | void |
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| 279 | regular::close() |
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| 280 | { |
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| 281 | pc::sync::stack pg(keeper); |
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| 282 | |
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| 283 | #ifndef IO_WO_XEXEC |
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| 284 | performPreExec(OPERATION_CLOSE); |
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| 285 | #endif |
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| 286 | |
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| 287 | if (handle->file != NULL) { |
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| 288 | if (fclose(handle->file) != 0) |
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| 289 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_CLOSE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 290 | |
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| 291 | handle->file = NULL; |
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| 292 | } |
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| 293 | |
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| 294 | #ifndef IO_WO_XEXEC |
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| 295 | performPostExec(OPERATION_CLOSE); |
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| 296 | #endif |
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| 297 | } |
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| 298 | |
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| 299 | //------------------------------------------------------------------- |
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| 300 | |
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| 301 | void |
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| 302 | regular::open(const dodo::string &a_path, |
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| 303 | short a_mode) |
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| 304 | { |
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| 305 | pc::sync::stack pg(keeper); |
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| 306 | |
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| 307 | #ifndef IO_WO_XEXEC |
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| 308 | performPreExec(OPERATION_OPEN); |
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| 309 | #endif |
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| 310 | |
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| 311 | path = a_path; |
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| 312 | mode = a_mode; |
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| 313 | |
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| 314 | if (handle->file != NULL) { |
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| 315 | if (fclose(handle->file) != 0) |
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| 316 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OPEN, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 317 | |
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| 318 | handle->file = NULL; |
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| 319 | } |
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| 320 | |
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| 321 | bool exists(false); |
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| 322 | |
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| 323 | if (path.size() == 0) |
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| 324 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OPEN, exception::ERRNO_LIBDODO, REGULAREX_WRONGFILENAME, IOFILEREGULAREX_WRONGFILENAME_STR, __LINE__, __FILE__, path); |
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| 325 | else { |
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| 326 | struct stat st; |
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| 327 | |
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| 328 | if (::lstat(path.data(), &st) == -1) { |
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| 329 | if (errno != ENOENT) |
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| 330 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OPEN, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 331 | } else |
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| 332 | exists = true; |
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| 333 | |
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| 334 | if (exists && !S_ISREG(st.st_mode) && !S_ISBLK(st.st_mode)) |
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| 335 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OPEN, exception::ERRNO_LIBDODO, REGULAREX_WRONGFILENAME, IOFILEREGULAREX_WRONGFILENAME_STR, __LINE__, __FILE__, path); |
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| 336 | |
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| 337 | switch (mode) { |
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| 338 | case OPEN_MODE_READ_WRITE: |
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| 339 | |
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| 340 | handle->file = fopen(path.data(), "r+"); |
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| 341 | if (handle->file == NULL) |
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| 342 | handle->file = fopen(path.data(), "w+"); |
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| 343 | |
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| 344 | break; |
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| 345 | |
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| 346 | case OPEN_MODE_READ_WRITE_TRUNCATE: |
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| 347 | |
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| 348 | handle->file = fopen(path.data(), "w+"); |
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| 349 | |
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| 350 | break; |
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| 351 | |
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| 352 | case OPEN_MODE_READ_ONLY: |
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| 353 | default: |
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| 354 | |
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| 355 | handle->file = fopen(path.data(), "r"); |
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| 356 | } |
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| 357 | } |
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| 358 | |
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| 359 | if (handle->file == NULL) |
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| 360 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_OPEN, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 361 | |
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| 362 | if (!exists) |
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| 363 | tools::filesystem::chmod(path, DEFAULT_FILE_PERM); |
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| 364 | |
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| 365 | #ifndef IO_WO_XEXEC |
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| 366 | performPostExec(OPERATION_OPEN); |
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| 367 | #endif |
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| 368 | } |
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| 369 | |
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| 370 | //------------------------------------------------------------------- |
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| 371 | |
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| 372 | unsigned long |
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| 373 | regular::_read(char * const data) const |
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| 374 | { |
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| 375 | if (handle->file == NULL) |
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| 376 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READ, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 377 | |
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| 378 | if (fseek(handle->file, pos, SEEK_SET) == -1) |
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| 379 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READ, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 380 | |
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| 381 | char *s = data; |
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| 382 | |
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| 383 | unsigned long batch = bs, n; |
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| 384 | |
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| 385 | while (batch != 0) { |
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| 386 | while (true) { |
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| 387 | if ((n = fread(s, 1, batch, handle->file)) == 0) { |
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| 388 | if (feof(handle->file) != 0 || errno == EAGAIN) |
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| 389 | return bs - batch; |
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| 390 | |
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| 391 | if (errno == EINTR) |
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| 392 | continue; |
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| 393 | |
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| 394 | if (ferror(handle->file) != 0) |
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| 395 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READ, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 396 | } |
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| 397 | |
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| 398 | break; |
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| 399 | } |
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| 400 | |
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| 401 | batch -= n; |
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| 402 | s += n; |
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| 403 | } |
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| 404 | |
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| 405 | return bs - batch; |
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| 406 | } |
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| 407 | |
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| 408 | //------------------------------------------------------------------- |
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| 409 | |
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| 410 | unsigned long |
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| 411 | regular::_write(const char *const data) const |
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| 412 | { |
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| 413 | if (handle->file == NULL) |
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| 414 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITE, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 415 | |
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| 416 | if (append) { |
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| 417 | if (fseek(handle->file, 0, SEEK_END) == -1) |
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| 418 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 419 | } else { |
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| 420 | if (fseek(handle->file, pos, SEEK_SET) == -1) |
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| 421 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 422 | } |
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| 423 | |
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| 424 | const char *s = data; |
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| 425 | |
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| 426 | unsigned long batch = bs, n; |
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| 427 | |
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| 428 | while (batch != 0) { |
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| 429 | while (true) { |
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| 430 | if ((n = fwrite(s, 1, batch, handle->file)) == 0) { |
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| 431 | if (errno == EINTR) |
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| 432 | continue; |
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| 433 | |
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| 434 | if (errno == EAGAIN) |
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| 435 | break; |
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| 436 | |
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| 437 | if (ferror(handle->file) != 0) |
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| 438 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITE, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 439 | } |
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| 440 | |
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| 441 | break; |
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| 442 | } |
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| 443 | |
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| 444 | batch -= n; |
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| 445 | s += n; |
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| 446 | } |
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| 447 | |
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| 448 | return bs; |
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| 449 | } |
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| 450 | |
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| 451 | //------------------------------------------------------------------- |
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| 452 | |
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| 453 | void |
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| 454 | regular::erase() |
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| 455 | { |
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| 456 | pc::sync::stack pg(keeper); |
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| 457 | |
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| 458 | char *empty = new char[bs]; |
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| 459 | |
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| 460 | memset(empty, 0, bs); |
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| 461 | dodo_try { |
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| 462 | _write(empty); |
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| 463 | } dodo_catch (exception::basic *e UNUSED) { |
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| 464 | delete [] empty; |
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| 465 | |
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| 466 | dodo_rethrow; |
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| 467 | } |
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| 468 | |
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| 469 | delete [] empty; |
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| 470 | } |
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| 471 | |
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| 472 | //------------------------------------------------------------------- |
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| 473 | |
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| 474 | void |
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| 475 | regular::flush() const |
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| 476 | { |
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| 477 | pc::sync::stack pg(keeper); |
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| 478 | |
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| 479 | if (handle->file == NULL) |
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| 480 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_FLUSH, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 481 | |
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| 482 | if (fflush(handle->file) != 0) |
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| 483 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX_FLUSH, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 484 | } |
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| 485 | |
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| 486 | //------------------------------------------------------------------- |
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| 487 | |
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| 488 | unsigned long |
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| 489 | regular::_readString(char * const data) const |
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| 490 | { |
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| 491 | if (handle->file == NULL) |
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| 492 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READSTRING, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 493 | |
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| 494 | unsigned long readSize = bs + 1; |
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| 495 | |
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| 496 | if (fseek(handle->file, pos, SEEK_SET) == -1) |
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| 497 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READSTRING, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 498 | |
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| 499 | while (true) { |
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| 500 | if (fgets(data, readSize, handle->file) == NULL) { |
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| 501 | if (errno == EINTR) |
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| 502 | continue; |
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| 503 | |
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| 504 | if (errno == EAGAIN) |
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| 505 | break; |
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| 506 | |
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| 507 | if (ferror(handle->file) != 0) |
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| 508 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__READSTRING, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__); |
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| 509 | } |
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| 510 | |
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| 511 | break; |
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| 512 | } |
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| 513 | |
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| 514 | return strlen(data); |
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| 515 | } |
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| 516 | |
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| 517 | //------------------------------------------------------------------- |
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| 518 | |
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| 519 | unsigned long |
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| 520 | regular::_writeString(const char *const data) const |
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| 521 | { |
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| 522 | if (handle->file == NULL) |
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| 523 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITESTRING, exception::ERRNO_LIBDODO, REGULAREX_NOTOPENED, IOFILEREGULAREX_NOTOPENED_STR, __LINE__, __FILE__, path); |
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| 524 | |
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| 525 | if (fseek(handle->file, 0, SEEK_END) == -1) |
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| 526 | dodo_throw exception::basic(exception::MODULE_IOFILEREGULAR, REGULAREX__WRITESTRING, exception::ERRNO_ERRNO, errno, strerror(errno), __LINE__, __FILE__, path); |
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| 527 | |
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| 528 | unsigned long _bs = bs; |
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| 529 | unsigned long written; |
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| 530 | |
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| 531 | dodo_try { |
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| 532 | bs = strnlen(data, bs); |
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| 533 | |
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| 534 | written = _write(data); |
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| 535 | |
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| 536 | bs = _bs; |
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| 537 | } dodo_catch (exception::basic *e UNUSED) { |
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| 538 | bs = _bs; |
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| 539 | |
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| 540 | dodo_rethrow; |
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| 541 | } |
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| 542 | |
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| 543 | return written; |
|---|
| 544 | } |
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| 545 | |
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| 546 | //------------------------------------------------------------------- |
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| 547 | |
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