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805e021f CE |
1 | /* |
2 | * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan | |
3 | * (Royal Institute of Technology, Stockholm, Sweden). | |
4 | * All rights reserved. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * | |
17 | * 3. Neither the name of the Institute nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #include <config.h> | |
35 | ||
36 | #include "roken.h" | |
37 | ||
38 | /* | |
39 | * Like write but never return partial data. | |
40 | */ | |
41 | ||
42 | #ifndef _WIN32 | |
43 | ||
44 | ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL | |
45 | net_write (rk_socket_t fd, const void *buf, size_t nbytes) | |
46 | { | |
47 | const char *cbuf = (const char *)buf; | |
48 | ssize_t count; | |
49 | size_t rem = nbytes; | |
50 | ||
51 | while (rem > 0) { | |
52 | count = write (fd, cbuf, rem); | |
53 | if (count < 0) { | |
54 | if (errno == EINTR) | |
55 | continue; | |
56 | else | |
57 | return count; | |
58 | } | |
59 | cbuf += count; | |
60 | rem -= count; | |
61 | } | |
62 | return nbytes; | |
63 | } | |
64 | ||
65 | #else | |
66 | ||
67 | ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL | |
68 | net_write(rk_socket_t sock, const void *buf, size_t nbytes) | |
69 | { | |
70 | const char *cbuf = (const char *)buf; | |
71 | ssize_t count; | |
72 | size_t rem = nbytes; | |
73 | #ifdef SOCKET_IS_NOT_AN_FD | |
74 | int use_write = 0; | |
75 | #endif | |
76 | ||
77 | while (rem > 0) { | |
78 | #ifdef SOCKET_IS_NOT_AN_FD | |
79 | if (use_write) | |
80 | count = _write (sock, cbuf, rem); | |
81 | else | |
82 | count = send (sock, cbuf, rem, 0); | |
83 | ||
84 | if (use_write == 0 && | |
85 | rk_IS_SOCKET_ERROR(count) && | |
86 | (rk_SOCK_ERRNO == WSANOTINITIALISED || | |
87 | rk_SOCK_ERRNO == WSAENOTSOCK)) { | |
88 | use_write = 1; | |
89 | ||
90 | count = _write (sock, cbuf, rem); | |
91 | } | |
92 | #else | |
93 | count = send (sock, cbuf, rem, 0); | |
94 | #endif | |
95 | if (count < 0) { | |
96 | if (errno == EINTR) | |
97 | continue; | |
98 | else | |
99 | return count; | |
100 | } | |
101 | cbuf += count; | |
102 | rem -= count; | |
103 | } | |
104 | return nbytes; | |
105 | } | |
106 | ||
107 | #endif |