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annotate src/os/unix/ngx_channel.c @ 4412:d620f497c50f

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Copyright updated.
author Maxim Konovalov <maxim@nginx.com>
date Wed, 18 Jan 2012 15:07:43 +0000
parents e76fbd1a49f3
children 982678c5c270
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 391
diff changeset
1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 391
diff changeset
2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents: 441
diff changeset
3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
parents: 3682
diff changeset
4 * Copyright (C) Nginx, Inc.
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 391
diff changeset
5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 391
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6
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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7
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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8 #include <ngx_config.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
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9 #include <ngx_core.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
diff changeset
10 #include <ngx_channel.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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11
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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12
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
13 ngx_int_t
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
14 ngx_write_channel(ngx_socket_t s, ngx_channel_t *ch, size_t size,
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
15 ngx_log_t *log)
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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16 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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17 ssize_t n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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18 ngx_err_t err;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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19 struct iovec iov[1];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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20 struct msghdr msg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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21
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22 #if (NGX_HAVE_MSGHDR_MSG_CONTROL)
366
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23
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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24 union {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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25 struct cmsghdr cm;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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26 char space[CMSG_SPACE(sizeof(int))];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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27 } cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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28
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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29 if (ch->fd == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
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30 msg.msg_control = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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31 msg.msg_controllen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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32
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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33 } else {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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34 msg.msg_control = (caddr_t) &cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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35 msg.msg_controllen = sizeof(cmsg);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
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36
1901
d880fa02fb65 use CMSG_LEN(), this fixes an alert "sendmsg() failed (9: Bad file descriptor)"
Igor Sysoev <igor@sysoev.ru>
parents: 577
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37 cmsg.cm.cmsg_len = CMSG_LEN(sizeof(int));
577
4d9ea73a627a nginx-0.3.10-RELEASE import
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parents: 563
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38 cmsg.cm.cmsg_level = SOL_SOCKET;
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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39 cmsg.cm.cmsg_type = SCM_RIGHTS;
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2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
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40
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
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41 /*
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
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parents: 1901
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42 * We have to use ngx_memcpy() instead of simple
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
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43 * *(int *) CMSG_DATA(&cmsg.cm) = ch->fd;
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
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parents: 1901
diff changeset
44 * because some gcc 4.4 with -O2/3/s optimization issues the warning:
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
45 * dereferencing type-punned pointer will break strict-aliasing rules
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
46 *
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
47 * Fortunately, gcc with -O1 compiles this ngx_memcpy()
3682
e76fbd1a49f3 fix typo
Igor Sysoev <igor@sysoev.ru>
parents: 3396
diff changeset
48 * in the same simple assignment as in the code above
3396
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
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49 */
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
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parents: 1901
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50
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
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51 ngx_memcpy(CMSG_DATA(&cmsg.cm), &ch->fd, sizeof(int));
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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52 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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53
483
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 481
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54 msg.msg_flags = 0;
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 481
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55
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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56 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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57
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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58 if (ch->fd == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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59 msg.msg_accrights = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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60 msg.msg_accrightslen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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61
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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62 } else {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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63 msg.msg_accrights = (caddr_t) &ch->fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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64 msg.msg_accrightslen = sizeof(int);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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65 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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66
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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67 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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68
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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69 iov[0].iov_base = (char *) ch;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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70 iov[0].iov_len = size;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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71
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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72 msg.msg_name = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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73 msg.msg_namelen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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74 msg.msg_iov = iov;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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75 msg.msg_iovlen = 1;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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76
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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77 n = sendmsg(s, &msg, 0);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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78
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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79 if (n == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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80 err = ngx_errno;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
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81 if (err == NGX_EAGAIN) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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parents:
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82 return NGX_AGAIN;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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83 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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84
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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85 ngx_log_error(NGX_LOG_ALERT, log, err, "sendmsg() failed");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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86 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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87 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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88
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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89 return NGX_OK;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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90 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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91
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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92
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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93 ngx_int_t
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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94 ngx_read_channel(ngx_socket_t s, ngx_channel_t *ch, size_t size, ngx_log_t *log)
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
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95 {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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96 ssize_t n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
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97 ngx_err_t err;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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98 struct iovec iov[1];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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99 struct msghdr msg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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diff changeset
100
469
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101 #if (NGX_HAVE_MSGHDR_MSG_CONTROL)
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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102 union {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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103 struct cmsghdr cm;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
104 char space[CMSG_SPACE(sizeof(int))];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
105 } cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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106 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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107 int fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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108 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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109
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 iov[0].iov_base = (char *) ch;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 iov[0].iov_len = size;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
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113 msg.msg_name = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
114 msg.msg_namelen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 msg.msg_iov = iov;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116 msg.msg_iovlen = 1;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
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diff changeset
117
469
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diff changeset
118 #if (NGX_HAVE_MSGHDR_MSG_CONTROL)
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119 msg.msg_control = (caddr_t) &cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120 msg.msg_controllen = sizeof(cmsg);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
121 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122 msg.msg_accrights = (caddr_t) &fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
123 msg.msg_accrightslen = sizeof(int);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 n = recvmsg(s, &msg, 0);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
127
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128 if (n == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
129 err = ngx_errno;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
130 if (err == NGX_EAGAIN) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
131 return NGX_AGAIN;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134 ngx_log_error(NGX_LOG_ALERT, log, err, "recvmsg() failed");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
137
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
138 if (n == 0) {
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
139 ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "recvmsg() returned zero");
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
140 return NGX_ERROR;
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
141 }
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
142
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143 if ((size_t) n < sizeof(ngx_channel_t)) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 ngx_log_error(NGX_LOG_ALERT, log, 0,
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
145 "recvmsg() returned not enough data: %uz", n);
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 465
diff changeset
149 #if (NGX_HAVE_MSGHDR_MSG_CONTROL)
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 if (ch->command == NGX_CMD_OPEN_CHANNEL) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152
1901
d880fa02fb65 use CMSG_LEN(), this fixes an alert "sendmsg() failed (9: Bad file descriptor)"
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
153 if (cmsg.cm.cmsg_len < (socklen_t) CMSG_LEN(sizeof(int))) {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 ngx_log_error(NGX_LOG_ALERT, log, 0,
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 "recvmsg() returned too small ancillary data");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
158
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 if (cmsg.cm.cmsg_level != SOL_SOCKET || cmsg.cm.cmsg_type != SCM_RIGHTS)
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 ngx_log_error(NGX_LOG_ALERT, log, 0,
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 "recvmsg() returned invalid ancillary data "
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
163 "level %d or type %d",
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
164 cmsg.cm.cmsg_level, cmsg.cm.cmsg_type);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
165 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
167
3396
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
168 /* ch->fd = *(int *) CMSG_DATA(&cmsg.cm); */
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
169
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
170 ngx_memcpy(&ch->fd, CMSG_DATA(&cmsg.cm), sizeof(int));
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174 ngx_log_error(NGX_LOG_ALERT, log, 0,
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175 "recvmsg() truncated data");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180 if (ch->command == NGX_CMD_OPEN_CHANNEL) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181 if (msg.msg_accrightslen != sizeof(int)) {
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
182 ngx_log_error(NGX_LOG_ALERT, log, 0,
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183 "recvmsg() returned no ancillary data");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
184 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
185 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
187 ch->fd = fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
188 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
189
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 return n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
196 ngx_int_t
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
197 ngx_add_channel_event(ngx_cycle_t *cycle, ngx_fd_t fd, ngx_int_t event,
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
198 ngx_event_handler_pt handler)
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200 ngx_event_t *ev, *rev, *wev;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201 ngx_connection_t *c;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
203 c = ngx_get_connection(fd, cycle->log);
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
204
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
205 if (c == NULL) {
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
206 return NGX_ERROR;
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
207 }
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
208
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
209 c->pool = cycle->pool;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
210
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
211 rev = c->read;
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
212 wev = c->write;
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
213
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
214 rev->log = cycle->log;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
215 wev->log = cycle->log;
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
216
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
217 #if (NGX_THREADS)
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
218 rev->lock = &c->lock;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
219 wev->lock = &c->lock;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
220 rev->own_lock = &c->lock;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
221 wev->own_lock = &c->lock;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
222 #endif
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 366
diff changeset
223
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
224 rev->channel = 1;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
225 wev->channel = 1;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
226
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
227 ev = (event == NGX_READ_EVENT) ? rev : wev;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
228
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 483
diff changeset
229 ev->handler = handler;
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
231 if (ngx_add_conn && (ngx_event_flags & NGX_USE_EPOLL_EVENT) == 0) {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
232 if (ngx_add_conn(c) == NGX_ERROR) {
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
233 ngx_free_connection(c);
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
234 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
235 }
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
236
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
237 } else {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
238 if (ngx_add_event(ev, event, 0) == NGX_ERROR) {
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
239 ngx_free_connection(c);
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
241 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
242 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
243
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
244 return NGX_OK;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
245 }
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
246
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
247
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
248 void
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
249 ngx_close_channel(ngx_fd_t *fd, ngx_log_t *log)
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
250 {
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
251 if (close(fd[0]) == -1) {
465
5aecc125bc33 nginx-0.1.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
252 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "close() channel failed");
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
253 }
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
254
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
255 if (close(fd[1]) == -1) {
465
5aecc125bc33 nginx-0.1.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
256 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "close() channel failed");
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
257 }
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
258 }