[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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[3796] | 184 | int roar_vio_shutdown(struct roar_vio_calls * vio, int how) { |
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| 185 | return roar_vio_ctl(vio, ROAR_VIO_CTL_SHUTDOWN, &how); |
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| 186 | } |
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| 187 | |
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[1252] | 188 | // converters: |
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| 189 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
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[1474] | 190 | #ifdef _CAN_OPERATE |
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[1252] | 191 | int fh; |
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| 192 | |
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| 193 | if ( calls == NULL || filename == NULL ) |
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| 194 | return -1; |
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| 195 | |
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[1762] | 196 | #ifdef ROAR_TARGET_WIN32 |
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| 197 | flags |= O_BINARY; |
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| 198 | #endif |
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| 199 | |
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[1252] | 200 | if ( (fh = open(filename, flags, mode)) == -1 ) |
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| 201 | return -1; |
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| 202 | |
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| 203 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
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| 204 | close(fh); |
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| 205 | return -1; |
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| 206 | } |
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| 207 | |
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| 208 | return 0; |
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[1474] | 209 | #else |
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| 210 | return -1; |
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| 211 | #endif |
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[1252] | 212 | } |
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| 213 | |
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| 214 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
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| 215 | if ( calls == NULL ) |
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| 216 | return -1; |
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| 217 | |
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| 218 | if ( roar_vio_init_calls(calls) == -1 ) |
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| 219 | return -1; |
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| 220 | |
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| 221 | return roar_vio_set_fh(calls, fh); |
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| 222 | } |
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| 223 | |
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[1290] | 224 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
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| 225 | if ( calls == NULL ) |
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| 226 | return -1; |
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| 227 | |
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[1666] | 228 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
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| 229 | return -1; |
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| 230 | |
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[1760] | 231 | #ifdef ROAR_TARGET_WIN32 |
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| 232 | calls->read = roar_vio_winsock_read; |
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| 233 | calls->write = roar_vio_winsock_write; |
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| 234 | calls->nonblock = roar_vio_winsock_nonblock; |
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| 235 | calls->sync = roar_vio_winsock_sync; |
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| 236 | calls->ctl = roar_vio_winsock_ctl; |
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| 237 | calls->close = roar_vio_winsock_close; |
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| 238 | #else |
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| 239 | calls->sync = roar_vio_null_sync; |
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| 240 | #endif |
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[1666] | 241 | |
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| 242 | return 0; |
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[1290] | 243 | } |
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| 244 | |
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[1291] | 245 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
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| 246 | int fh; |
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| 247 | |
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| 248 | if ( calls == NULL ) |
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| 249 | return -1; |
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| 250 | |
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| 251 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
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| 252 | return -1; |
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| 253 | |
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| 254 | return roar_vio_open_fh_socket(calls, fh); |
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| 255 | } |
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| 256 | |
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| 257 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
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| 258 | int fh; |
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| 259 | |
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| 260 | if ( calls == NULL ) |
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| 261 | return -1; |
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| 262 | |
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| 263 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
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| 264 | return -1; |
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| 265 | |
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| 266 | return roar_vio_open_fh_socket(calls, fh); |
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| 267 | } |
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| 268 | |
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[1275] | 269 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
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| 270 | char * server, int dir, char * name) { |
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| 271 | int fh; |
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| 272 | |
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| 273 | if ( calls == NULL ) |
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| 274 | return -1; |
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| 275 | |
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| 276 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
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| 277 | return -1; |
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| 278 | |
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[1290] | 279 | return roar_vio_open_fh_socket(calls, fh); |
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[1275] | 280 | } |
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| 281 | |
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[2841] | 282 | int roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls, |
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| 283 | struct roar_connection * con, |
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| 284 | struct roar_stream * s, |
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| 285 | int rate, int channels, int bits, int codec, int dir) { |
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| 286 | int fh; |
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| 287 | |
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| 288 | if ( calls == NULL ) |
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| 289 | return -1; |
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| 290 | |
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| 291 | if ( (fh = roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir)) == -1 ) |
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| 292 | return -1; |
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| 293 | |
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| 294 | return roar_vio_open_fh_socket(calls, fh); |
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| 295 | } |
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| 296 | |
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[886] | 297 | // VIOs: |
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[881] | 298 | |
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[886] | 299 | // basic |
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[881] | 300 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 301 | #ifdef _CAN_OPERATE |
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[881] | 302 | return read(roar_vio_get_fh(vio), buf, count); |
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[1474] | 303 | #else |
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| 304 | return -1; |
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| 305 | #endif |
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[881] | 306 | } |
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| 307 | |
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| 308 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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[1474] | 309 | #ifdef _CAN_OPERATE |
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[881] | 310 | return write(roar_vio_get_fh(vio), buf, count); |
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[1474] | 311 | #else |
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| 312 | return -1; |
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| 313 | #endif |
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[881] | 314 | } |
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| 315 | |
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| 316 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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[1474] | 317 | #ifdef _CAN_OPERATE |
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[881] | 318 | return lseek(roar_vio_get_fh(vio), offset, whence); |
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[1474] | 319 | #else |
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| 320 | return -1; |
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| 321 | #endif |
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[881] | 322 | } |
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| 323 | |
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[1118] | 324 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
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| 325 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
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| 326 | return -1; |
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| 327 | |
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| 328 | if ( state == ROAR_SOCKET_NONBLOCK ) |
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| 329 | return 0; |
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| 330 | |
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[1125] | 331 | roar_vio_sync(vio); |
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| 332 | |
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| 333 | return 0; |
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[1118] | 334 | } |
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| 335 | |
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| 336 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
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[1397] | 337 | #ifdef ROAR_FDATASYNC |
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[1171] | 338 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
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[1397] | 339 | #else |
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| 340 | return 0; |
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| 341 | #endif |
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[1118] | 342 | } |
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| 343 | |
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[1505] | 344 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[3796] | 345 | int tmp; |
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| 346 | int s_r = 0, s_w = 0; |
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[1505] | 347 | |
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| 348 | if ( vio == NULL || cmd == -1 ) |
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| 349 | return -1; |
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| 350 | |
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[1615] | 351 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 352 | |
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[1505] | 353 | switch (cmd) { |
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[3795] | 354 | case ROAR_VIO_CTL_GET_NAME: |
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| 355 | if ( data == NULL ) |
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| 356 | return -1; |
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| 357 | |
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| 358 | *(char**)data = "basic"; |
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| 359 | return 0; |
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| 360 | break; |
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[1505] | 361 | case ROAR_VIO_CTL_GET_FH: |
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| 362 | case ROAR_VIO_CTL_GET_READ_FH: |
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| 363 | case ROAR_VIO_CTL_GET_WRITE_FH: |
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[3436] | 364 | case ROAR_VIO_CTL_GET_SELECT_FH: |
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| 365 | case ROAR_VIO_CTL_GET_SELECT_READ_FH: |
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| 366 | case ROAR_VIO_CTL_GET_SELECT_WRITE_FH: |
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[1615] | 367 | 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] | 368 | *(int*)data = roar_vio_get_fh(vio); |
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| 369 | return 0; |
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| 370 | break; |
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[2054] | 371 | case ROAR_VIO_CTL_SET_NOSYNC: |
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| 372 | vio->sync = NULL; |
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| 373 | return 0; |
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| 374 | break; |
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[3769] | 375 | case ROAR_VIO_CTL_ACCEPT: |
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[3796] | 376 | tmp = accept(roar_vio_get_fh(vio), NULL, 0); |
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| 377 | if ( tmp == -1 ) |
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[3769] | 378 | return -1; |
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| 379 | |
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| 380 | // most proably a socket. |
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[3796] | 381 | if ( roar_vio_open_fh_socket(data, tmp) == -1 ) { |
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[3769] | 382 | #ifdef ROAR_TARGET_WIN32 |
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[3796] | 383 | closesocket(tmp); |
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[3769] | 384 | #else |
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[3796] | 385 | close(tmp); |
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[3769] | 386 | #endif |
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| 387 | return -1; |
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| 388 | } |
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| 389 | |
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| 390 | return 0; |
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| 391 | break; |
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[3796] | 392 | case ROAR_VIO_CTL_SHUTDOWN: |
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| 393 | tmp = *(int*)data; |
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| 394 | |
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| 395 | if ( tmp & ROAR_VIO_SHUTDOWN_READ ) { |
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| 396 | s_r = 1; |
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| 397 | tmp -= ROAR_VIO_SHUTDOWN_READ; |
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| 398 | } |
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| 399 | |
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| 400 | if ( tmp & ROAR_VIO_SHUTDOWN_WRITE ) { |
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| 401 | s_w = 1; |
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| 402 | tmp -= ROAR_VIO_SHUTDOWN_WRITE; |
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| 403 | } |
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| 404 | |
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| 405 | if ( tmp != 0 ) /* we currently only support R and W shutdowns */ |
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| 406 | return -1; |
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| 407 | |
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| 408 | if ( s_r && s_w ) { |
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| 409 | tmp = SHUT_RDWR; |
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| 410 | } else if ( s_r ) { |
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| 411 | tmp = SHUT_RD; |
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| 412 | } else if ( s_w ) { |
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| 413 | tmp = SHUT_WR; |
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| 414 | } else { |
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| 415 | return 0; // nothing to do. |
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| 416 | } |
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| 417 | |
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| 418 | return shutdown(roar_vio_get_fh(vio), tmp); |
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| 419 | break; |
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[1505] | 420 | } |
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| 421 | |
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| 422 | return -1; |
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| 423 | } |
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| 424 | |
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[1241] | 425 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
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[1474] | 426 | #ifdef _CAN_OPERATE |
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[1336] | 427 | if ( roar_vio_get_fh(vio) != -1 ) |
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| 428 | return close(roar_vio_get_fh(vio)); |
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| 429 | |
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| 430 | return 0; |
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[1474] | 431 | #else |
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| 432 | return -1; |
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| 433 | #endif |
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[1241] | 434 | } |
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| 435 | |
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[943] | 436 | // null |
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| 437 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 438 | if ( vio == NULL || buf == NULL ) |
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| 439 | return -1; |
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| 440 | |
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| 441 | return 0; |
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| 442 | } |
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| 443 | |
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[1665] | 444 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
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| 445 | return 0; |
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| 446 | } |
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| 447 | |
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[886] | 448 | // pass |
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[1247] | 449 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 450 | if ( calls == NULL ) |
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| 451 | return -1; |
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| 452 | |
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| 453 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
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| 454 | |
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| 455 | calls->read = roar_vio_pass_read; |
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| 456 | calls->write = roar_vio_pass_write; |
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| 457 | calls->lseek = roar_vio_pass_lseek; |
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| 458 | calls->nonblock = roar_vio_pass_nonblock; |
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| 459 | calls->sync = roar_vio_pass_sync; |
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[1615] | 460 | calls->ctl = roar_vio_pass_ctl; |
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[1247] | 461 | calls->close = roar_vio_pass_close; |
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| 462 | |
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| 463 | calls->inst = dst; |
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| 464 | |
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| 465 | return 0; |
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| 466 | } |
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| 467 | |
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[886] | 468 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 469 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
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| 470 | } |
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| 471 | |
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| 472 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 473 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
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| 474 | } |
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| 475 | |
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| 476 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 477 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 478 | } |
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| 479 | |
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[1241] | 480 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
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| 481 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
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| 482 | } |
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| 483 | |
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| 484 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
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| 485 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
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| 486 | } |
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| 487 | |
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| 488 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
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[1505] | 489 | if (vio == NULL || cmd == -1) |
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| 490 | return -1; |
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| 491 | |
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[1615] | 492 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
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| 493 | |
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[1505] | 494 | switch (cmd) { |
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[3795] | 495 | case ROAR_VIO_CTL_GET_NAME: |
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| 496 | if ( data == NULL ) |
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| 497 | return -1; |
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| 498 | |
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| 499 | *(char**)data = "pass"; |
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| 500 | return 0; |
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| 501 | break; |
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[1505] | 502 | case ROAR_VIO_CTL_GET_NEXT: |
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| 503 | *(struct roar_vio_calls **)data = vio->inst; |
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| 504 | return 0; |
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| 505 | break; |
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| 506 | case ROAR_VIO_CTL_SET_NEXT: |
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| 507 | vio->inst = *(struct roar_vio_calls **)data; |
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| 508 | return 0; |
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| 509 | break; |
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| 510 | } |
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| 511 | |
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[1241] | 512 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
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| 513 | } |
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| 514 | |
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| 515 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
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| 516 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
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| 517 | } |
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| 518 | |
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[886] | 519 | |
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| 520 | // re |
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[1247] | 521 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
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| 522 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
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| 523 | return -1; |
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| 524 | |
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| 525 | calls->read = roar_vio_re_read; |
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| 526 | calls->write = roar_vio_re_write; |
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| 527 | calls->lseek = roar_vio_re_lseek; |
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| 528 | |
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| 529 | return 0; |
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| 530 | } |
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[886] | 531 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 532 | size_t len = 0; |
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| 533 | ssize_t r = -1; |
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| 534 | |
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| 535 | if ( vio == NULL ) |
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| 536 | return -1; |
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| 537 | |
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| 538 | if ( vio->inst == NULL ) |
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| 539 | return -1; |
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| 540 | |
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| 541 | errno = 0; |
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| 542 | |
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| 543 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 544 | len += r; |
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| 545 | buf += r; |
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| 546 | count -= r; |
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| 547 | if ( count == 0 ) |
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| 548 | break; |
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| 549 | } |
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| 550 | |
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| 551 | if ( len == 0 && r == -1 ) |
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| 552 | return -1; |
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| 553 | |
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| 554 | return len; |
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| 555 | } |
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| 556 | |
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| 557 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 558 | size_t len = 0; |
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| 559 | ssize_t r = -1; |
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| 560 | |
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| 561 | if ( vio == NULL ) |
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| 562 | return -1; |
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| 563 | |
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| 564 | if ( vio->inst == NULL ) |
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| 565 | return -1; |
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| 566 | |
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| 567 | errno = 0; |
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| 568 | |
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| 569 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
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| 570 | len += r; |
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| 571 | buf += r; |
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| 572 | count -= r; |
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| 573 | if ( count == 0 ) |
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| 574 | break; |
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| 575 | } |
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| 576 | |
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| 577 | if ( len == 0 && r == -1 ) |
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| 578 | return -1; |
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| 579 | |
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| 580 | return len; |
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| 581 | } |
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| 582 | |
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[1247] | 583 | // TODO: we should do a some more intelgent thing here. |
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[886] | 584 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
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| 585 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
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| 586 | } |
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| 587 | |
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[590] | 588 | //ll |
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