[590] | 1 | //vio.c: |
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| 2 | |
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[690] | 3 | /* |
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[1284] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009 |
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[690] | 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar 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 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 General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[690] | 23 | * |
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| 24 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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[590] | 36 | #include "libroar.h" |
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| 37 | |
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[1474] | 38 | #ifdef ROAR_HAVE_IO_POSIX |
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| 39 | #define _CAN_OPERATE |
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| 40 | #endif |
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| 41 | |
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[591] | 42 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
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[1474] | 43 | #ifdef _CAN_OPERATE |
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[1118] | 44 | if ( calls == NULL ) |
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[591] | 45 | return -1; |
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| 46 | |
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| 47 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 48 | |
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[881] | 49 | /* |
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[597] | 50 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
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| 51 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
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| 52 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
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[881] | 53 | */ |
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| 54 | |
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[1118] | 55 | calls->read = roar_vio_basic_read; |
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| 56 | calls->write = roar_vio_basic_write; |
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| 57 | calls->lseek = roar_vio_basic_lseek; |
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| 58 | calls->nonblock = roar_vio_basic_nonblock; |
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| 59 | calls->sync = roar_vio_basic_sync; |
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[1505] | 60 | calls->ctl = roar_vio_basic_ctl; |
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[1241] | 61 | calls->close = roar_vio_basic_close; |
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[881] | 62 | |
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| 63 | return 0; |
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[1474] | 64 | #else |
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| 65 | return -1; |
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| 66 | #endif |
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[881] | 67 | } |
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| 68 | |
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| 69 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
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| 70 | if ( vio == NULL ) |
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| 71 | return -1; |
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| 72 | |
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| 73 | vio->inst = inst; |
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[591] | 74 | |
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| 75 | return 0; |
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| 76 | } |
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| 77 | |
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[881] | 78 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
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[989] | 79 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
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[881] | 80 | } |
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| 81 | |
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| 82 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
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| 83 | if ( vio == NULL ) |
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| 84 | return -1; |
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| 85 | |
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[989] | 86 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
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[881] | 87 | } |
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| 88 | |
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| 89 | |
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| 90 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1319] | 91 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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| 92 | |
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[881] | 93 | if ( vio == NULL ) |
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| 94 | return -1; |
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| 95 | |
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| 96 | if ( vio->read == NULL ) |
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| 97 | return -1; |
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| 98 | |
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| 99 | return vio->read(vio, buf, count); |
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| 100 | } |
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| 101 | |
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| 102 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[3276] | 103 | ROAR_DBG("roar_vio_write(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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| 104 | |
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[881] | 105 | if ( vio == NULL ) |
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| 106 | return -1; |
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| 107 | |
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| 108 | if ( vio->write == NULL ) |
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| 109 | return -1; |
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| 110 | |
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| 111 | return vio->write(vio, buf, count); |
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| 112 | } |
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| 113 | |
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| 114 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[3276] | 115 | ROAR_DBG("roar_vio_lseek(vio=%p, offset=%u, whence=%i) = ?", vio, (unsigned int)offset, whence); |
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| 116 | |
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[881] | 117 | if ( vio == NULL ) |
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| 118 | return -1; |
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| 119 | |
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| 120 | if ( vio->lseek == NULL ) |
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| 121 | return -1; |
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| 122 | |
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| 123 | return vio->lseek(vio, offset, whence); |
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| 124 | } |
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| 125 | |
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[1118] | 126 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
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[3276] | 127 | ROAR_DBG("roar_vio_nonblock(vio=%p, state=%i) = ?", vio, state); |
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| 128 | |
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[1118] | 129 | if ( vio == NULL ) |
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| 130 | return -1; |
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| 131 | |
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| 132 | if ( vio->nonblock == NULL ) |
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| 133 | return -1; |
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| 134 | |
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| 135 | return vio->nonblock(vio, state); |
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| 136 | } |
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| 137 | |
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| 138 | int roar_vio_sync (struct roar_vio_calls * vio) { |
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[3276] | 139 | ROAR_DBG("roar_vio_sync(vio=%p) = ?", vio); |
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| 140 | |
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[1118] | 141 | if ( vio == NULL ) |
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| 142 | return -1; |
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| 143 | |
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| 144 | if ( vio->sync == NULL ) |
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| 145 | return -1; |
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| 146 | |
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| 147 | return vio->sync(vio); |
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| 148 | } |
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| 149 | |
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[1140] | 150 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[3276] | 151 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=%i, data=%p) = ?", vio, cmd, data); |
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| 152 | |
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[1140] | 153 | if ( vio == NULL ) |
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| 154 | return -1; |
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| 155 | |
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[1615] | 156 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=0x%.8x, data=%p): vio->ctl=%p", vio, cmd, data, vio->ctl); |
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| 157 | |
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[1140] | 158 | if ( vio->ctl == NULL ) |
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| 159 | return -1; |
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| 160 | |
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| 161 | return vio->ctl(vio, cmd, data); |
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| 162 | } |
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| 163 | |
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[1241] | 164 | int roar_vio_close (struct roar_vio_calls * vio) { |
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[3276] | 165 | ROAR_DBG("roar_vio_close(vio=%p) = ?", vio); |
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| 166 | |
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[1241] | 167 | if ( vio == NULL ) |
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| 168 | return -1; |
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| 169 | |
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[1258] | 170 | if ( vio->close == NULL ) |
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[1241] | 171 | return -1; |
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| 172 | |
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| 173 | return vio->close(vio); |
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| 174 | } |
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| 175 | |
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[3769] | 176 | // specal commands: |
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| 177 | int roar_vio_accept (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 178 | if (dst == NULL || calls == NULL) |
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| 179 | return -1; |
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| 180 | |
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| 181 | return roar_vio_ctl(dst, ROAR_VIO_CTL_ACCEPT, calls); |
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| 182 | } |
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| 183 | |
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[1252] | 184 | // converters: |
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| 185 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
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[1474] | 186 | #ifdef _CAN_OPERATE |
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[1252] | 187 | int fh; |
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| 188 | |
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| 189 | if ( calls == NULL || filename == NULL ) |
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| 190 | return -1; |
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| 191 | |
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[1762] | 192 | #ifdef ROAR_TARGET_WIN32 |
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| 193 | flags |= O_BINARY; |
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| 194 | #endif |
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| 195 | |
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[1252] | 196 | if ( (fh = open(filename, flags, mode)) == -1 ) |
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| 197 | return -1; |
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| 198 | |
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| 199 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
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| 200 | close(fh); |
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| 201 | return -1; |
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| 202 | } |
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| 203 | |
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| 204 | return 0; |
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[1474] | 205 | #else |
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| 206 | return -1; |
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| 207 | #endif |
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[1252] | 208 | } |
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| 209 | |
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| 210 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
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| 211 | if ( calls == NULL ) |
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| 212 | return -1; |
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| 213 | |
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| 214 | if ( roar_vio_init_calls(calls) == -1 ) |
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| 215 | return -1; |
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| 216 | |
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| 217 | return roar_vio_set_fh(calls, fh); |
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| 218 | } |
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| 219 | |
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[1290] | 220 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
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| 221 | if ( calls == NULL ) |
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| 222 | return -1; |
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| 223 | |
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[1666] | 224 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
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| 225 | return -1; |
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| 226 | |
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[1760] | 227 | #ifdef ROAR_TARGET_WIN32 |
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| 228 | calls->read = roar_vio_winsock_read; |
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| 229 | calls->write = roar_vio_winsock_write; |
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| 230 | calls->nonblock = roar_vio_winsock_nonblock; |
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| 231 | calls->sync = roar_vio_winsock_sync; |
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| 232 | calls->ctl = roar_vio_winsock_ctl; |
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| 233 | calls->close = roar_vio_winsock_close; |
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| 234 | #else |
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| 235 | calls->sync = roar_vio_null_sync; |
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| 236 | #endif |
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[1666] | 237 | |
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| 238 | return 0; |
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[1290] | 239 | } |
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| 240 | |
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[1291] | 241 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
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| 242 | int fh; |
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| 243 | |
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| 244 | if ( calls == NULL ) |
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| 245 | return -1; |
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| 246 | |
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| 247 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
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| 248 | return -1; |
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| 249 | |
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| 250 | return roar_vio_open_fh_socket(calls, fh); |
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| 251 | } |
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| 252 | |
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| 253 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
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| 254 | int fh; |
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| 255 | |
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| 256 | if ( calls == NULL ) |
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| 257 | return -1; |
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| 258 | |
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| 259 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
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| 260 | return -1; |
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| 261 | |
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| 262 | return roar_vio_open_fh_socket(calls, fh); |
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| 263 | } |
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| 264 | |
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[1275] | 265 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
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| 266 | char * server, int dir, char * name) { |
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| 267 | int fh; |
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| 268 | |
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| 269 | if ( calls == NULL ) |
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| 270 | return -1; |
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| 271 | |
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| 272 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
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| 273 | return -1; |
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| 274 | |
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[1290] | 275 | return roar_vio_open_fh_socket(calls, fh); |
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[1275] | 276 | } |
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| 277 | |
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[2841] | 278 | int roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls, |
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| 279 | struct roar_connection * con, |
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| 280 | struct roar_stream * s, |
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| 281 | int rate, int channels, int bits, int codec, int dir) { |
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| 282 | int fh; |
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| 283 | |
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| 284 | if ( calls == NULL ) |
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| 285 | return -1; |
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| 286 | |
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| 287 | if ( (fh = roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir)) == -1 ) |
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| 288 | return -1; |
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| 289 | |
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| 290 | return roar_vio_open_fh_socket(calls, fh); |
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| 291 | } |
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| 292 | |
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[886] | 293 | // VIOs: |
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[881] | 294 | |
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[886] | 295 | // basic |
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[881] | 296 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 297 | #ifdef _CAN_OPERATE |
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[881] | 298 | return read(roar_vio_get_fh(vio), buf, count); |
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[1474] | 299 | #else |
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| 300 | return -1; |
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| 301 | #endif |
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[881] | 302 | } |
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| 303 | |
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| 304 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 305 | #ifdef _CAN_OPERATE |
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[881] | 306 | return write(roar_vio_get_fh(vio), buf, count); |
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[1474] | 307 | #else |
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| 308 | return -1; |
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| 309 | #endif |
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[881] | 310 | } |
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| 311 | |
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| 312 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[1474] | 313 | #ifdef _CAN_OPERATE |
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[881] | 314 | return lseek(roar_vio_get_fh(vio), offset, whence); |
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[1474] | 315 | #else |
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| 316 | return -1; |
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| 317 | #endif |
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[881] | 318 | } |
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| 319 | |
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[1118] | 320 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
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| 321 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
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| 322 | return -1; |
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| 323 | |
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| 324 | if ( state == ROAR_SOCKET_NONBLOCK ) |
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| 325 | return 0; |
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| 326 | |
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[1125] | 327 | roar_vio_sync(vio); |
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| 328 | |
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| 329 | return 0; |
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[1118] | 330 | } |
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| 331 | |
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| 332 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
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[1397] | 333 | #ifdef ROAR_FDATASYNC |
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[1171] | 334 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
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[1397] | 335 | #else |
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| 336 | return 0; |
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| 337 | #endif |
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[1118] | 338 | } |
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| 339 | |
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[1505] | 340 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[3769] | 341 | int fh; |
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[1505] | 342 | |
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| 343 | if ( vio == NULL || cmd == -1 ) |
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| 344 | return -1; |
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| 345 | |
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[1615] | 346 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 347 | |
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[1505] | 348 | switch (cmd) { |
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| 349 | case ROAR_VIO_CTL_GET_FH: |
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| 350 | case ROAR_VIO_CTL_GET_READ_FH: |
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| 351 | case ROAR_VIO_CTL_GET_WRITE_FH: |
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[3436] | 352 | case ROAR_VIO_CTL_GET_SELECT_FH: |
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| 353 | case ROAR_VIO_CTL_GET_SELECT_READ_FH: |
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| 354 | case ROAR_VIO_CTL_GET_SELECT_WRITE_FH: |
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[1615] | 355 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=ROAR_VIO_CTL_GET_*FH(0x%.8x), data=%p) = 0 // fh=%i", vio, cmd, data, roar_vio_get_fh(vio)); |
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[1505] | 356 | *(int*)data = roar_vio_get_fh(vio); |
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| 357 | return 0; |
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| 358 | break; |
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[2054] | 359 | case ROAR_VIO_CTL_SET_NOSYNC: |
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| 360 | vio->sync = NULL; |
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| 361 | return 0; |
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| 362 | break; |
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[3769] | 363 | case ROAR_VIO_CTL_ACCEPT: |
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| 364 | fh = accept(roar_vio_get_fh(vio), NULL, 0); |
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| 365 | if ( fh == -1 ) |
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| 366 | return -1; |
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| 367 | |
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| 368 | // most proably a socket. |
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| 369 | if ( roar_vio_open_fh_socket(data, fh) == -1 ) { |
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| 370 | #ifdef ROAR_TARGET_WIN32 |
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| 371 | closesocket(fh); |
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| 372 | #else |
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| 373 | close(fh); |
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| 374 | #endif |
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| 375 | return -1; |
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| 376 | } |
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| 377 | |
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| 378 | return 0; |
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| 379 | break; |
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[1505] | 380 | } |
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| 381 | |
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| 382 | return -1; |
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| 383 | } |
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| 384 | |
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[1241] | 385 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
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[1474] | 386 | #ifdef _CAN_OPERATE |
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[1336] | 387 | if ( roar_vio_get_fh(vio) != -1 ) |
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| 388 | return close(roar_vio_get_fh(vio)); |
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| 389 | |
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| 390 | return 0; |
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[1474] | 391 | #else |
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| 392 | return -1; |
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| 393 | #endif |
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[1241] | 394 | } |
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| 395 | |
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[943] | 396 | // null |
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| 397 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 398 | if ( vio == NULL || buf == NULL ) |
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| 399 | return -1; |
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| 400 | |
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| 401 | return 0; |
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| 402 | } |
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| 403 | |
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[1665] | 404 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
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| 405 | return 0; |
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| 406 | } |
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| 407 | |
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[886] | 408 | // pass |
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[1247] | 409 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 410 | if ( calls == NULL ) |
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| 411 | return -1; |
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| 412 | |
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| 413 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 414 | |
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| 415 | calls->read = roar_vio_pass_read; |
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| 416 | calls->write = roar_vio_pass_write; |
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| 417 | calls->lseek = roar_vio_pass_lseek; |
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| 418 | calls->nonblock = roar_vio_pass_nonblock; |
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| 419 | calls->sync = roar_vio_pass_sync; |
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[1615] | 420 | calls->ctl = roar_vio_pass_ctl; |
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[1247] | 421 | calls->close = roar_vio_pass_close; |
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| 422 | |
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| 423 | calls->inst = dst; |
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| 424 | |
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| 425 | return 0; |
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| 426 | } |
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| 427 | |
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[886] | 428 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 429 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
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| 430 | } |
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| 431 | |
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| 432 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 433 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
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| 434 | } |
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| 435 | |
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| 436 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 437 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 438 | } |
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| 439 | |
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[1241] | 440 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
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| 441 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
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| 442 | } |
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| 443 | |
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| 444 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
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| 445 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
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| 446 | } |
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| 447 | |
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| 448 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[1505] | 449 | if (vio == NULL || cmd == -1) |
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| 450 | return -1; |
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| 451 | |
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[1615] | 452 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 453 | |
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[1505] | 454 | switch (cmd) { |
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| 455 | case ROAR_VIO_CTL_GET_NEXT: |
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| 456 | *(struct roar_vio_calls **)data = vio->inst; |
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| 457 | return 0; |
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| 458 | break; |
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| 459 | case ROAR_VIO_CTL_SET_NEXT: |
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| 460 | vio->inst = *(struct roar_vio_calls **)data; |
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| 461 | return 0; |
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| 462 | break; |
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| 463 | } |
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| 464 | |
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[1241] | 465 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
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| 466 | } |
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| 467 | |
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| 468 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
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| 469 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
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| 470 | } |
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| 471 | |
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[886] | 472 | |
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| 473 | // re |
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[1247] | 474 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 475 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
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| 476 | return -1; |
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| 477 | |
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| 478 | calls->read = roar_vio_re_read; |
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| 479 | calls->write = roar_vio_re_write; |
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| 480 | calls->lseek = roar_vio_re_lseek; |
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| 481 | |
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| 482 | return 0; |
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| 483 | } |
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[886] | 484 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 485 | size_t len = 0; |
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| 486 | ssize_t r = -1; |
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| 487 | |
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| 488 | if ( vio == NULL ) |
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| 489 | return -1; |
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| 490 | |
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| 491 | if ( vio->inst == NULL ) |
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| 492 | return -1; |
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| 493 | |
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| 494 | errno = 0; |
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| 495 | |
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| 496 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 497 | len += r; |
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| 498 | buf += r; |
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| 499 | count -= r; |
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| 500 | if ( count == 0 ) |
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| 501 | break; |
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| 502 | } |
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| 503 | |
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| 504 | if ( len == 0 && r == -1 ) |
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| 505 | return -1; |
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| 506 | |
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| 507 | return len; |
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| 508 | } |
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| 509 | |
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| 510 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 511 | size_t len = 0; |
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| 512 | ssize_t r = -1; |
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| 513 | |
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| 514 | if ( vio == NULL ) |
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| 515 | return -1; |
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| 516 | |
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| 517 | if ( vio->inst == NULL ) |
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| 518 | return -1; |
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| 519 | |
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| 520 | errno = 0; |
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| 521 | |
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| 522 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 523 | len += r; |
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| 524 | buf += r; |
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| 525 | count -= r; |
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| 526 | if ( count == 0 ) |
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| 527 | break; |
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| 528 | } |
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| 529 | |
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| 530 | if ( len == 0 && r == -1 ) |
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| 531 | return -1; |
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| 532 | |
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| 533 | return len; |
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| 534 | } |
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| 535 | |
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[1247] | 536 | // TODO: we should do a some more intelgent thing here. |
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[886] | 537 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 538 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 539 | } |
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| 540 | |
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[590] | 541 | //ll |
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