[590] | 1 | //vio.c: |
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| 2 | |
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[690] | 3 | /* |
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[3812] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2010 |
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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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[3852] | 37 | #include <sys/ioctl.h> |
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[590] | 38 | |
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[1474] | 39 | #ifdef ROAR_HAVE_IO_POSIX |
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| 40 | #define _CAN_OPERATE |
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| 41 | #endif |
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| 42 | |
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[591] | 43 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
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[1474] | 44 | #ifdef _CAN_OPERATE |
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[1118] | 45 | if ( calls == NULL ) |
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[591] | 46 | return -1; |
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| 47 | |
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| 48 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 49 | |
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[881] | 50 | /* |
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[597] | 51 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
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| 52 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
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| 53 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
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[881] | 54 | */ |
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| 55 | |
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[1118] | 56 | calls->read = roar_vio_basic_read; |
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| 57 | calls->write = roar_vio_basic_write; |
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| 58 | calls->lseek = roar_vio_basic_lseek; |
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| 59 | calls->nonblock = roar_vio_basic_nonblock; |
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| 60 | calls->sync = roar_vio_basic_sync; |
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[1505] | 61 | calls->ctl = roar_vio_basic_ctl; |
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[1241] | 62 | calls->close = roar_vio_basic_close; |
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[881] | 63 | |
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| 64 | return 0; |
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[1474] | 65 | #else |
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| 66 | return -1; |
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| 67 | #endif |
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[881] | 68 | } |
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| 69 | |
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| 70 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
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| 71 | if ( vio == NULL ) |
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| 72 | return -1; |
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| 73 | |
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| 74 | vio->inst = inst; |
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[591] | 75 | |
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| 76 | return 0; |
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| 77 | } |
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| 78 | |
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[881] | 79 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
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[989] | 80 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
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[881] | 81 | } |
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| 82 | |
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| 83 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
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| 84 | if ( vio == NULL ) |
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| 85 | return -1; |
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| 86 | |
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[989] | 87 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
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[881] | 88 | } |
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| 89 | |
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| 90 | |
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| 91 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1319] | 92 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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| 93 | |
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[881] | 94 | if ( vio == NULL ) |
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| 95 | return -1; |
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| 96 | |
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| 97 | if ( vio->read == NULL ) |
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| 98 | return -1; |
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| 99 | |
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| 100 | return vio->read(vio, buf, count); |
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| 101 | } |
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| 102 | |
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| 103 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[3276] | 104 | ROAR_DBG("roar_vio_write(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
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| 105 | |
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[881] | 106 | if ( vio == NULL ) |
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| 107 | return -1; |
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| 108 | |
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| 109 | if ( vio->write == NULL ) |
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| 110 | return -1; |
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| 111 | |
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| 112 | return vio->write(vio, buf, count); |
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| 113 | } |
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| 114 | |
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| 115 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[3276] | 116 | ROAR_DBG("roar_vio_lseek(vio=%p, offset=%u, whence=%i) = ?", vio, (unsigned int)offset, whence); |
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| 117 | |
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[881] | 118 | if ( vio == NULL ) |
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| 119 | return -1; |
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| 120 | |
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| 121 | if ( vio->lseek == NULL ) |
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| 122 | return -1; |
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| 123 | |
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| 124 | return vio->lseek(vio, offset, whence); |
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| 125 | } |
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| 126 | |
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[1118] | 127 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
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[3276] | 128 | ROAR_DBG("roar_vio_nonblock(vio=%p, state=%i) = ?", vio, state); |
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| 129 | |
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[1118] | 130 | if ( vio == NULL ) |
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| 131 | return -1; |
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| 132 | |
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| 133 | if ( vio->nonblock == NULL ) |
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| 134 | return -1; |
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| 135 | |
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| 136 | return vio->nonblock(vio, state); |
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| 137 | } |
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| 138 | |
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| 139 | int roar_vio_sync (struct roar_vio_calls * vio) { |
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[3276] | 140 | ROAR_DBG("roar_vio_sync(vio=%p) = ?", vio); |
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| 141 | |
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[1118] | 142 | if ( vio == NULL ) |
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| 143 | return -1; |
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| 144 | |
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| 145 | if ( vio->sync == NULL ) |
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| 146 | return -1; |
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| 147 | |
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| 148 | return vio->sync(vio); |
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| 149 | } |
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| 150 | |
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[1140] | 151 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[3276] | 152 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=%i, data=%p) = ?", vio, cmd, data); |
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| 153 | |
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[1140] | 154 | if ( vio == NULL ) |
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| 155 | return -1; |
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| 156 | |
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[1615] | 157 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=0x%.8x, data=%p): vio->ctl=%p", vio, cmd, data, vio->ctl); |
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| 158 | |
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[1140] | 159 | if ( vio->ctl == NULL ) |
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| 160 | return -1; |
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| 161 | |
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| 162 | return vio->ctl(vio, cmd, data); |
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| 163 | } |
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| 164 | |
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[1241] | 165 | int roar_vio_close (struct roar_vio_calls * vio) { |
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[3276] | 166 | ROAR_DBG("roar_vio_close(vio=%p) = ?", vio); |
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| 167 | |
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[1241] | 168 | if ( vio == NULL ) |
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| 169 | return -1; |
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| 170 | |
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[1258] | 171 | if ( vio->close == NULL ) |
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[1241] | 172 | return -1; |
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| 173 | |
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| 174 | return vio->close(vio); |
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| 175 | } |
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| 176 | |
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[3769] | 177 | // specal commands: |
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| 178 | int roar_vio_accept (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 179 | if (dst == NULL || calls == NULL) |
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| 180 | return -1; |
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| 181 | |
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| 182 | return roar_vio_ctl(dst, ROAR_VIO_CTL_ACCEPT, calls); |
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| 183 | } |
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| 184 | |
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[3796] | 185 | int roar_vio_shutdown(struct roar_vio_calls * vio, int how) { |
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| 186 | return roar_vio_ctl(vio, ROAR_VIO_CTL_SHUTDOWN, &how); |
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| 187 | } |
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| 188 | |
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[1252] | 189 | // converters: |
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| 190 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
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[1474] | 191 | #ifdef _CAN_OPERATE |
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[1252] | 192 | int fh; |
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| 193 | |
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| 194 | if ( calls == NULL || filename == NULL ) |
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| 195 | return -1; |
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| 196 | |
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[1762] | 197 | #ifdef ROAR_TARGET_WIN32 |
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| 198 | flags |= O_BINARY; |
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| 199 | #endif |
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| 200 | |
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[1252] | 201 | if ( (fh = open(filename, flags, mode)) == -1 ) |
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| 202 | return -1; |
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| 203 | |
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| 204 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
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| 205 | close(fh); |
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| 206 | return -1; |
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| 207 | } |
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| 208 | |
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| 209 | return 0; |
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[1474] | 210 | #else |
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| 211 | return -1; |
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| 212 | #endif |
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[1252] | 213 | } |
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| 214 | |
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| 215 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
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| 216 | if ( calls == NULL ) |
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| 217 | return -1; |
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| 218 | |
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| 219 | if ( roar_vio_init_calls(calls) == -1 ) |
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| 220 | return -1; |
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| 221 | |
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| 222 | return roar_vio_set_fh(calls, fh); |
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| 223 | } |
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| 224 | |
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[1290] | 225 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
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| 226 | if ( calls == NULL ) |
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| 227 | return -1; |
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| 228 | |
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[1666] | 229 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
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| 230 | return -1; |
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| 231 | |
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[1760] | 232 | #ifdef ROAR_TARGET_WIN32 |
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| 233 | calls->read = roar_vio_winsock_read; |
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| 234 | calls->write = roar_vio_winsock_write; |
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| 235 | calls->nonblock = roar_vio_winsock_nonblock; |
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| 236 | calls->sync = roar_vio_winsock_sync; |
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| 237 | calls->ctl = roar_vio_winsock_ctl; |
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| 238 | calls->close = roar_vio_winsock_close; |
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| 239 | #else |
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| 240 | calls->sync = roar_vio_null_sync; |
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| 241 | #endif |
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[1666] | 242 | |
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| 243 | return 0; |
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[1290] | 244 | } |
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| 245 | |
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[1291] | 246 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
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| 247 | int fh; |
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| 248 | |
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| 249 | if ( calls == NULL ) |
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| 250 | return -1; |
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| 251 | |
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| 252 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
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| 253 | return -1; |
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| 254 | |
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| 255 | return roar_vio_open_fh_socket(calls, fh); |
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| 256 | } |
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| 257 | |
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| 258 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
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| 259 | int fh; |
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| 260 | |
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| 261 | if ( calls == NULL ) |
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| 262 | return -1; |
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| 263 | |
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| 264 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
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| 265 | return -1; |
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| 266 | |
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| 267 | return roar_vio_open_fh_socket(calls, fh); |
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| 268 | } |
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| 269 | |
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[1275] | 270 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
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| 271 | char * server, int dir, char * name) { |
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| 272 | int fh; |
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| 273 | |
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| 274 | if ( calls == NULL ) |
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| 275 | return -1; |
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| 276 | |
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| 277 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
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| 278 | return -1; |
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| 279 | |
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[1290] | 280 | return roar_vio_open_fh_socket(calls, fh); |
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[1275] | 281 | } |
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| 282 | |
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[2841] | 283 | int roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls, |
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| 284 | struct roar_connection * con, |
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| 285 | struct roar_stream * s, |
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| 286 | int rate, int channels, int bits, int codec, int dir) { |
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| 287 | int fh; |
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| 288 | |
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| 289 | if ( calls == NULL ) |
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| 290 | return -1; |
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| 291 | |
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| 292 | if ( (fh = roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir)) == -1 ) |
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| 293 | return -1; |
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| 294 | |
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| 295 | return roar_vio_open_fh_socket(calls, fh); |
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| 296 | } |
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| 297 | |
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[886] | 298 | // VIOs: |
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[881] | 299 | |
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[886] | 300 | // basic |
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[881] | 301 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 302 | #ifdef _CAN_OPERATE |
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[881] | 303 | return read(roar_vio_get_fh(vio), buf, count); |
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[1474] | 304 | #else |
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| 305 | return -1; |
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| 306 | #endif |
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[881] | 307 | } |
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| 308 | |
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| 309 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 310 | #ifdef _CAN_OPERATE |
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[881] | 311 | return write(roar_vio_get_fh(vio), buf, count); |
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[1474] | 312 | #else |
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| 313 | return -1; |
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| 314 | #endif |
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[881] | 315 | } |
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| 316 | |
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| 317 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[1474] | 318 | #ifdef _CAN_OPERATE |
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[881] | 319 | return lseek(roar_vio_get_fh(vio), offset, whence); |
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[1474] | 320 | #else |
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| 321 | return -1; |
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| 322 | #endif |
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[881] | 323 | } |
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| 324 | |
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[1118] | 325 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
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| 326 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
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| 327 | return -1; |
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| 328 | |
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| 329 | if ( state == ROAR_SOCKET_NONBLOCK ) |
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| 330 | return 0; |
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| 331 | |
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[1125] | 332 | roar_vio_sync(vio); |
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| 333 | |
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| 334 | return 0; |
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[1118] | 335 | } |
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| 336 | |
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| 337 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
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[1397] | 338 | #ifdef ROAR_FDATASYNC |
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[1171] | 339 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
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[1397] | 340 | #else |
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| 341 | return 0; |
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| 342 | #endif |
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[1118] | 343 | } |
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| 344 | |
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[1505] | 345 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[3852] | 346 | struct roar_vio_sysio_ioctl * sysioctl; |
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[3796] | 347 | int tmp; |
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| 348 | int s_r = 0, s_w = 0; |
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[1505] | 349 | |
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| 350 | if ( vio == NULL || cmd == -1 ) |
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| 351 | return -1; |
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| 352 | |
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[1615] | 353 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 354 | |
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[1505] | 355 | switch (cmd) { |
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[3795] | 356 | case ROAR_VIO_CTL_GET_NAME: |
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| 357 | if ( data == NULL ) |
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| 358 | return -1; |
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| 359 | |
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| 360 | *(char**)data = "basic"; |
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| 361 | return 0; |
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| 362 | break; |
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[1505] | 363 | case ROAR_VIO_CTL_GET_FH: |
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| 364 | case ROAR_VIO_CTL_GET_READ_FH: |
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| 365 | case ROAR_VIO_CTL_GET_WRITE_FH: |
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[3436] | 366 | case ROAR_VIO_CTL_GET_SELECT_FH: |
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| 367 | case ROAR_VIO_CTL_GET_SELECT_READ_FH: |
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| 368 | case ROAR_VIO_CTL_GET_SELECT_WRITE_FH: |
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[1615] | 369 | 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] | 370 | *(int*)data = roar_vio_get_fh(vio); |
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| 371 | return 0; |
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| 372 | break; |
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[2054] | 373 | case ROAR_VIO_CTL_SET_NOSYNC: |
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| 374 | vio->sync = NULL; |
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| 375 | return 0; |
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| 376 | break; |
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[3769] | 377 | case ROAR_VIO_CTL_ACCEPT: |
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[3796] | 378 | tmp = accept(roar_vio_get_fh(vio), NULL, 0); |
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| 379 | if ( tmp == -1 ) |
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[3769] | 380 | return -1; |
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| 381 | |
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| 382 | // most proably a socket. |
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[3796] | 383 | if ( roar_vio_open_fh_socket(data, tmp) == -1 ) { |
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[3769] | 384 | #ifdef ROAR_TARGET_WIN32 |
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[3796] | 385 | closesocket(tmp); |
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[3769] | 386 | #else |
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[3796] | 387 | close(tmp); |
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[3769] | 388 | #endif |
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| 389 | return -1; |
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| 390 | } |
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| 391 | |
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| 392 | return 0; |
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| 393 | break; |
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[3796] | 394 | case ROAR_VIO_CTL_SHUTDOWN: |
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| 395 | tmp = *(int*)data; |
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| 396 | |
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| 397 | if ( tmp & ROAR_VIO_SHUTDOWN_READ ) { |
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| 398 | s_r = 1; |
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| 399 | tmp -= ROAR_VIO_SHUTDOWN_READ; |
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| 400 | } |
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| 401 | |
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| 402 | if ( tmp & ROAR_VIO_SHUTDOWN_WRITE ) { |
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| 403 | s_w = 1; |
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| 404 | tmp -= ROAR_VIO_SHUTDOWN_WRITE; |
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| 405 | } |
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| 406 | |
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| 407 | if ( tmp != 0 ) /* we currently only support R and W shutdowns */ |
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| 408 | return -1; |
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| 409 | |
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| 410 | if ( s_r && s_w ) { |
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| 411 | tmp = SHUT_RDWR; |
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| 412 | } else if ( s_r ) { |
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| 413 | tmp = SHUT_RD; |
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| 414 | } else if ( s_w ) { |
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| 415 | tmp = SHUT_WR; |
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| 416 | } else { |
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| 417 | return 0; // nothing to do. |
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| 418 | } |
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| 419 | |
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[3858] | 420 | return ROAR_SHUTDOWN(roar_vio_get_fh(vio), tmp); |
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[3796] | 421 | break; |
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[3852] | 422 | case ROAR_VIO_CTL_SYSIO_IOCTL: |
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| 423 | sysioctl = data; |
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| 424 | return ioctl(roar_vio_get_fh(vio), sysioctl->cmd, sysioctl->argp); |
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| 425 | break; |
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[1505] | 426 | } |
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| 427 | |
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| 428 | return -1; |
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| 429 | } |
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| 430 | |
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[1241] | 431 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
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[1474] | 432 | #ifdef _CAN_OPERATE |
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[1336] | 433 | if ( roar_vio_get_fh(vio) != -1 ) |
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| 434 | return close(roar_vio_get_fh(vio)); |
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| 435 | |
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| 436 | return 0; |
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[1474] | 437 | #else |
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| 438 | return -1; |
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| 439 | #endif |
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[1241] | 440 | } |
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| 441 | |
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[943] | 442 | // null |
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| 443 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 444 | if ( vio == NULL || buf == NULL ) |
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| 445 | return -1; |
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| 446 | |
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| 447 | return 0; |
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| 448 | } |
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| 449 | |
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[1665] | 450 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
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| 451 | return 0; |
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| 452 | } |
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| 453 | |
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[886] | 454 | // pass |
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[1247] | 455 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 456 | if ( calls == NULL ) |
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| 457 | return -1; |
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| 458 | |
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| 459 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 460 | |
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| 461 | calls->read = roar_vio_pass_read; |
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| 462 | calls->write = roar_vio_pass_write; |
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| 463 | calls->lseek = roar_vio_pass_lseek; |
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| 464 | calls->nonblock = roar_vio_pass_nonblock; |
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| 465 | calls->sync = roar_vio_pass_sync; |
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[1615] | 466 | calls->ctl = roar_vio_pass_ctl; |
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[1247] | 467 | calls->close = roar_vio_pass_close; |
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| 468 | |
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| 469 | calls->inst = dst; |
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| 470 | |
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| 471 | return 0; |
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| 472 | } |
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| 473 | |
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[886] | 474 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 475 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
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| 476 | } |
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| 477 | |
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| 478 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 479 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
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| 480 | } |
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| 481 | |
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| 482 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 483 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 484 | } |
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| 485 | |
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[1241] | 486 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
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| 487 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
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| 488 | } |
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| 489 | |
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| 490 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
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| 491 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
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| 492 | } |
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| 493 | |
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| 494 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[1505] | 495 | if (vio == NULL || cmd == -1) |
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| 496 | return -1; |
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| 497 | |
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[1615] | 498 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 499 | |
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[1505] | 500 | switch (cmd) { |
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[3795] | 501 | case ROAR_VIO_CTL_GET_NAME: |
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| 502 | if ( data == NULL ) |
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| 503 | return -1; |
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| 504 | |
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| 505 | *(char**)data = "pass"; |
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| 506 | return 0; |
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| 507 | break; |
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[1505] | 508 | case ROAR_VIO_CTL_GET_NEXT: |
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| 509 | *(struct roar_vio_calls **)data = vio->inst; |
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| 510 | return 0; |
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| 511 | break; |
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| 512 | case ROAR_VIO_CTL_SET_NEXT: |
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| 513 | vio->inst = *(struct roar_vio_calls **)data; |
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| 514 | return 0; |
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| 515 | break; |
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| 516 | } |
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| 517 | |
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[1241] | 518 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
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| 519 | } |
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| 520 | |
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| 521 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
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| 522 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
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| 523 | } |
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| 524 | |
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[886] | 525 | |
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| 526 | // re |
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[1247] | 527 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 528 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
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| 529 | return -1; |
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| 530 | |
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| 531 | calls->read = roar_vio_re_read; |
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| 532 | calls->write = roar_vio_re_write; |
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| 533 | calls->lseek = roar_vio_re_lseek; |
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| 534 | |
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| 535 | return 0; |
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| 536 | } |
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[886] | 537 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 538 | size_t len = 0; |
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| 539 | ssize_t r = -1; |
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| 540 | |
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| 541 | if ( vio == NULL ) |
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| 542 | return -1; |
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| 543 | |
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| 544 | if ( vio->inst == NULL ) |
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| 545 | return -1; |
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| 546 | |
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| 547 | errno = 0; |
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| 548 | |
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| 549 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 550 | len += r; |
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| 551 | buf += r; |
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| 552 | count -= r; |
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| 553 | if ( count == 0 ) |
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| 554 | break; |
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| 555 | } |
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| 556 | |
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| 557 | if ( len == 0 && r == -1 ) |
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| 558 | return -1; |
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| 559 | |
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| 560 | return len; |
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| 561 | } |
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| 562 | |
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| 563 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 564 | size_t len = 0; |
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| 565 | ssize_t r = -1; |
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| 566 | |
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| 567 | if ( vio == NULL ) |
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| 568 | return -1; |
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| 569 | |
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| 570 | if ( vio->inst == NULL ) |
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| 571 | return -1; |
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| 572 | |
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| 573 | errno = 0; |
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| 574 | |
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| 575 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 576 | len += r; |
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| 577 | buf += r; |
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| 578 | count -= r; |
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| 579 | if ( count == 0 ) |
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| 580 | break; |
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| 581 | } |
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| 582 | |
---|
| 583 | if ( len == 0 && r == -1 ) |
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| 584 | return -1; |
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| 585 | |
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| 586 | return len; |
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| 587 | } |
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| 588 | |
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[1247] | 589 | // TODO: we should do a some more intelgent thing here. |
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[886] | 590 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 591 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 592 | } |
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| 593 | |
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[590] | 594 | //ll |
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