Mercurial > hg > nginx

annotate src/os/unix/ngx_channel.c @ 7669:52b34c3f89b4

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Too large st_blocks values are now ignored (ticket #157). With XFS, using "allocsize=64m" mount option results in large preallocation being reported in the st_blocks as returned by fstat() till the file is closed. This in turn results in incorrect cache size calculations and wrong clearing based on max_size. To avoid too aggressive cache clearing on such volumes, st_blocks values which result in sizes larger than st_size and eight blocks (an arbitrary limit) are no longer trusted, and we use st_size instead. The ngx_de_fs_size() counterpart is intentionally not modified, as it is used on closed files and hence not affected by this problem.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 22 Jun 2020 18:02:59 +0300
parents 3377f9459e99
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
diff changeset
6
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #include <ngx_config.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 #include <ngx_core.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10 #include <ngx_channel.h>
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
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>
parents:
diff changeset
16 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
17 ssize_t n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18 ngx_err_t err;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
19 struct iovec iov[1];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20 struct msghdr msg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
21
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 465
diff changeset
22 #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
23
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
24 union {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
25 struct cmsghdr cm;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
26 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
27 } cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
28
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
29 if (ch->fd == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
30 msg.msg_control = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
31 msg.msg_controllen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
32
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
33 } else {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
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:
diff changeset
35 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
36
5252
982678c5c270 Valgrind: another complaint about uninitialized bytes.
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents: 4412
diff changeset
37 ngx_memzero(&cmsg, sizeof(cmsg));
982678c5c270 Valgrind: another complaint about uninitialized bytes.
Tatsuhiko Kubo <cubicdaiya@gmail.com>
parents: 4412
diff changeset
38
1901
d880fa02fb65 use CMSG_LEN(), this fixes an alert "sendmsg() failed (9: Bad file descriptor)"
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
39 cmsg.cm.cmsg_len = CMSG_LEN(sizeof(int));
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
40 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:
diff changeset
41 cmsg.cm.cmsg_type = SCM_RIGHTS;
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
42
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
43 /*
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
44 * 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
diff changeset
45 * *(int *) CMSG_DATA(&cmsg.cm) = ch->fd;
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 * 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
47 * 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
48 *
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
49 * Fortunately, gcc with -O1 compiles this ngx_memcpy()
3682
e76fbd1a49f3 fix typo
Igor Sysoev <igor@sysoev.ru>
parents: 3396
diff changeset
50 * 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
diff changeset
51 */
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
52
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
53 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:
diff changeset
54 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
55
483
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 481
diff changeset
56 msg.msg_flags = 0;
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 481
diff changeset
57
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
60 if (ch->fd == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61 msg.msg_accrights = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
62 msg.msg_accrightslen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
63
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64 } else {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
65 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:
diff changeset
66 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
67 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
68
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
69 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
70
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
71 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
72 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
73
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
74 msg.msg_name = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
75 msg.msg_namelen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
76 msg.msg_iov = iov;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
77 msg.msg_iovlen = 1;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79 n = sendmsg(s, &msg, 0);
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81 if (n == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
82 err = ngx_errno;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
83 if (err == NGX_EAGAIN) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 return NGX_AGAIN;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
85 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
87 ngx_log_error(NGX_LOG_ALERT, log, err, "sendmsg() failed");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91 return NGX_OK;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
92 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
93
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
94
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
95 ngx_int_t
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
96 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
diff changeset
97 {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
98 ssize_t n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99 ngx_err_t err;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100 struct iovec iov[1];
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101 struct msghdr msg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
102
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 465
diff changeset
103 #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
104 union {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
105 struct cmsghdr cm;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106 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
107 } cmsg;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109 int fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 #endif
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112 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
113 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
114
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
115 msg.msg_name = NULL;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
116 msg.msg_namelen = 0;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
117 msg.msg_iov = iov;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
118 msg.msg_iovlen = 1;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
119
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 465
diff changeset
120 #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
121 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
122 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
123 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 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
125 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
126 #endif
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 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
129
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
130 if (n == -1) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
131 err = ngx_errno;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 if (err == NGX_EAGAIN) {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133 return NGX_AGAIN;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
135
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136 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
137 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
138 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
139
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
140 if (n == 0) {
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
141 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
142 return NGX_ERROR;
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
143 }
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
144
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
145 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
146 ngx_log_error(NGX_LOG_ALERT, log, 0,
5327
6b479db5b52b Format specifier fixes in error logging.
Sergey Kandaurov <pluknet@nginx.com>
parents: 5252
diff changeset
147 "recvmsg() returned not enough data: %z", n);
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 465
diff changeset
151 #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
152
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153 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
154
1901
d880fa02fb65 use CMSG_LEN(), this fixes an alert "sendmsg() failed (9: Bad file descriptor)"
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
155 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
156 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
157 "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
158 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
159 }
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 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
162 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
163 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
164 "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
165 "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
166 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
167 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169
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
170 /* 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
171
2c5e269d0608 fix building by gcc 4.x with -O2/3/s in some Linux distributions:
Igor Sysoev <igor@sysoev.ru>
parents: 1901
diff changeset
172 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
173 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
174
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175 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
176 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
177 "recvmsg() truncated data");
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 }
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 #else
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182 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
183 if (msg.msg_accrightslen != sizeof(int)) {
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
184 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
185 "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
186 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
187 }
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 ch->fd = fd;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 }
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 #endif
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 return n;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
198 ngx_int_t
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
199 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
200 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
201 {
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202 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
203 ngx_connection_t *c;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
204
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
205 c = ngx_get_connection(fd, cycle->log);
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
206
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
207 if (c == NULL) {
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
208 return NGX_ERROR;
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
209 }
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
210
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
211 c->pool = cycle->pool;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
212
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
213 rev = c->read;
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
214 wev = c->write;
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
215
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
216 rev->log = cycle->log;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
217 wev->log = cycle->log;
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
218
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
219 rev->channel = 1;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
220 wev->channel = 1;
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
221
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
222 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
223
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 483
diff changeset
224 ev->handler = handler;
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
225
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
226 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
227 if (ngx_add_conn(c) == NGX_ERROR) {
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
228 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
229 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230 }
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
231
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
232 } else {
366
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
233 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
234 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
235 return NGX_ERROR;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
236 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
237 }
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
238
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
239 return NGX_OK;
e411b1482ee3 nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240 }
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
241
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
242
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
243 void
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
244 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
245 {
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
246 if (close(fd[0]) == -1) {
465
5aecc125bc33 nginx-0.1.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
247 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
248 }
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
249
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
250 if (close(fd[1]) == -1) {
465
5aecc125bc33 nginx-0.1.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
251 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
252 }
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 381
diff changeset
253 }