slirp/src/stream.c

   1 /*
   2  * libslirp io streams
   3  *
   4  * Copyright (c) 2018 Red Hat, Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "stream.h"
  25 #include <glib.h>
  26
  27 bool slirp_istream_read(SlirpIStream *f, void *buf, size_t size)
  28 {
  29     return f->read_cb(buf, size, f->opaque) == size;
  30 }
  31
  32 bool slirp_ostream_write(SlirpOStream *f, const void *buf, size_t size)
  33 {
  34     return f->write_cb(buf, size, f->opaque) == size;
  35 }
  36
  37 uint8_t slirp_istream_read_u8(SlirpIStream *f)
  38 {
  39     uint8_t b;
  40
  41     if (slirp_istream_read(f, &b, sizeof(b))) {
  42         return b;
  43     }
  44
  45     return 0;
  46 }
  47
  48 bool slirp_ostream_write_u8(SlirpOStream *f, uint8_t b)
  49 {
  50     return slirp_ostream_write(f, &b, sizeof(b));
  51 }
  52
  53 uint16_t slirp_istream_read_u16(SlirpIStream *f)
  54 {
  55     uint16_t b;
  56
  57     if (slirp_istream_read(f, &b, sizeof(b))) {
  58         return GUINT16_FROM_BE(b);
  59     }
  60
  61     return 0;
  62 }
  63
  64 bool slirp_ostream_write_u16(SlirpOStream *f, uint16_t b)
  65 {
  66     b =  GUINT16_TO_BE(b);
  67     return slirp_ostream_write(f, &b, sizeof(b));
  68 }
  69
  70 uint32_t slirp_istream_read_u32(SlirpIStream *f)
  71 {
  72     uint32_t b;
  73
  74     if (slirp_istream_read(f, &b, sizeof(b))) {
  75         return GUINT32_FROM_BE(b);
  76     }
  77
  78     return 0;
  79 }
  80
  81 bool slirp_ostream_write_u32(SlirpOStream *f, uint32_t b)
  82 {
  83     b = GUINT32_TO_BE(b);
  84     return slirp_ostream_write(f, &b, sizeof(b));
  85 }
  86
  87 int16_t slirp_istream_read_i16(SlirpIStream *f)
  88 {
  89     int16_t b;
  90
  91     if (slirp_istream_read(f, &b, sizeof(b))) {
  92         return GINT16_FROM_BE(b);
  93     }
  94
  95     return 0;
  96 }
  97
  98 bool slirp_ostream_write_i16(SlirpOStream *f, int16_t b)
  99 {
 100     b = GINT16_TO_BE(b);
 101     return slirp_ostream_write(f, &b, sizeof(b));
 102 }
 103
 104 int32_t slirp_istream_read_i32(SlirpIStream *f)
 105 {
 106     int32_t b;
 107
 108     if (slirp_istream_read(f, &b, sizeof(b))) {
 109         return GINT32_FROM_BE(b);
 110     }
 111
 112     return 0;
 113 }
 114
 115 bool slirp_ostream_write_i32(SlirpOStream *f, int32_t b)
 116 {
 117     b = GINT32_TO_BE(b);
 118     return slirp_ostream_write(f, &b, sizeof(b));
 119 }