Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/lib/fdpass.c @ 1332:f2f3fe0916c1 HEAD
Compile fix for tru64
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Fri, 04 Apr 2003 15:09:27 +0300 |
| parents | 00dd1db9e312 |
| children | 04ed7a2536cc |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 28 | 2 fdpass.c - FD passing |
| 0 | 3 |
| 4 Copyright (c) 2002 Timo Sirainen | |
| 5 | |
| 6 Permission is hereby granted, free of charge, to any person obtaining | |
| 7 a copy of this software and associated documentation files (the | |
| 8 "Software"), to deal in the Software without restriction, including | |
| 9 without limitation the rights to use, copy, modify, merge, publish, | |
| 10 distribute, sublicense, and/or sell copies of the Software, and to | |
| 11 permit persons to whom the Software is furnished to do so, subject to | |
| 12 the following conditions: | |
| 13 | |
| 14 The above copyright notice and this permission notice shall be | |
| 15 included in all copies or substantial portions of the Software. | |
| 16 | |
| 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
| 18 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
| 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| 20 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | |
| 21 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
| 22 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
| 23 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 24 */ | |
| 25 | |
| 350 | 26 #define _XPG4_2 |
| 1332 | 27 #define _XOPEN_SOURCE_EXTENDED /* for Tru64 */ |
| 0 | 28 |
| 29 #include "lib.h" | |
| 30 #include "fdpass.h" | |
| 31 | |
|
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include sys/socket.h, not network.h. Required with solaris+ipv6 where
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32 #include <sys/socket.h> |
| 0 | 33 #include <sys/un.h> |
| 34 #include <sys/uio.h> | |
| 35 | |
|
345
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Define CMSG_SPACE always if it's undefined, not only if __sun__ is defined.
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36 #ifndef CMSG_SPACE |
| 0 | 37 # define CMSG_ALIGN(len) \ |
| 38 (((len) + sizeof(size_t) - 1) & ~(sizeof(size_t) - 1)) | |
| 39 # define CMSG_SPACE(len) \ | |
| 40 (CMSG_ALIGN(len) + CMSG_ALIGN(sizeof(struct cmsghdr))) | |
| 41 # define CMSG_LEN(len) \ | |
| 42 (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len)) | |
| 43 #endif | |
| 44 | |
|
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45 ssize_t fd_send(int handle, int send_fd, const void *data, size_t size) |
| 0 | 46 { |
| 47 struct msghdr msg; | |
| 48 struct iovec iov; | |
| 49 struct cmsghdr *cmsg; | |
|
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50 char buf[CMSG_SPACE(sizeof(int))]; |
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51 |
| 871 | 52 /* at least one byte is required to be sent with fd passing */ |
|
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Fixed to work with 64bit BSD systems.
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53 i_assert(size > 0 && size < SSIZE_T_MAX); |
| 0 | 54 |
| 55 memset(&msg, 0, sizeof (struct msghdr)); | |
| 56 | |
| 57 iov.iov_base = (void *) data; | |
| 58 iov.iov_len = size; | |
|
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59 |
| 0 | 60 msg.msg_iov = &iov; |
| 61 msg.msg_iovlen = 1; | |
| 62 | |
|
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63 if (send_fd != -1) { |
| 871 | 64 /* set the control and controllen before CMSG_FIRSTHDR() */ |
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65 msg.msg_control = buf; |
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66 msg.msg_controllen = sizeof(buf); |
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67 |
|
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68 cmsg = CMSG_FIRSTHDR(&msg); |
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69 cmsg->cmsg_level = SOL_SOCKET; |
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70 cmsg->cmsg_type = SCM_RIGHTS; |
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71 cmsg->cmsg_len = CMSG_LEN(sizeof(int)); |
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72 *((int *) CMSG_DATA(cmsg)) = send_fd; |
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73 |
| 871 | 74 /* set the real length we want to use. it's different than |
| 75 sizeof(buf) in 64bit systems. */ | |
|
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76 msg.msg_controllen = cmsg->cmsg_len; |
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77 } |
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78 |
| 0 | 79 return sendmsg(handle, &msg, 0); |
| 80 } | |
| 81 | |
|
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82 ssize_t fd_read(int handle, void *data, size_t size, int *fd) |
| 0 | 83 { |
| 84 struct msghdr msg; | |
| 85 struct iovec iov; | |
| 86 struct cmsghdr *cmsg; | |
|
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87 ssize_t ret; |
| 0 | 88 char buf[CMSG_SPACE(sizeof(int))]; |
| 89 | |
|
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90 i_assert(size > 0 && size < SSIZE_T_MAX); |
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183
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91 |
| 0 | 92 memset(&msg, 0, sizeof (struct msghdr)); |
| 93 | |
| 871 | 94 iov.iov_base = data; |
| 95 iov.iov_len = size; | |
| 96 | |
| 0 | 97 msg.msg_iov = &iov; |
| 98 msg.msg_iovlen = 1; | |
| 871 | 99 |
|
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100 memset(buf, 0, sizeof(buf)); |
| 871 | 101 msg.msg_control = buf; |
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102 msg.msg_controllen = sizeof(buf); |
| 0 | 103 |
| 104 ret = recvmsg(handle, &msg, 0); | |
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Still some fixes, I broke Solaris 8.
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105 if (ret <= 0) { |
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Still some fixes, I broke Solaris 8.
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106 *fd = -1; |
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107 return ret; |
|
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108 } |
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109 |
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110 /* at least one byte transferred - we should have the fd now */ |
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111 cmsg = CMSG_FIRSTHDR(&msg); |
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112 if (msg.msg_controllen < CMSG_SPACE(sizeof(int)) || |
|
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fd_read(): make sure it's SCM_RIGHTS that was transferred so that login
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113 cmsg == NULL || cmsg->cmsg_len < CMSG_LEN(sizeof(int)) || |
| 1174 | 114 cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) |
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115 *fd = -1; |
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116 else |
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117 *fd = *((int *) CMSG_DATA(cmsg)); |
| 0 | 118 return ret; |
| 119 } |