Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_linux_aio_read.c @ 5425:1356a3b96924
SSL: added ability to set keys used for Session Tickets (RFC5077).
In order to support key rollover, ssl_session_ticket_key can be defined
multiple times. The first key will be used to issue and resume Session
Tickets, while the rest will be used only to resume them.
ssl_session_ticket_key session_tickets/current.key;
ssl_session_ticket_key session_tickets/prev-1h.key;
ssl_session_ticket_key session_tickets/prev-2h.key;
Please note that nginx supports Session Tickets even without explicit
configuration of the keys and this feature should be only used in setups
where SSL traffic is distributed across multiple nginx servers.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author | Piotr Sikora <piotr@cloudflare.com> |
---|---|
date | Fri, 11 Oct 2013 16:05:24 -0700 |
parents | d620f497c50f |
children | ccad84a174e0 |
rev | line source |
---|---|
3052 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
3052 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
11 | |
12 | |
13 extern int ngx_eventfd; | |
14 extern aio_context_t ngx_aio_ctx; | |
15 | |
16 | |
17 static void ngx_file_aio_event_handler(ngx_event_t *ev); | |
18 | |
19 | |
4129
6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
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20 static int |
3052 | 21 io_submit(aio_context_t ctx, long n, struct iocb **paiocb) |
22 { | |
23 return syscall(SYS_io_submit, ctx, n, paiocb); | |
24 } | |
25 | |
26 | |
27 ssize_t | |
28 ngx_file_aio_read(ngx_file_t *file, u_char *buf, size_t size, off_t offset, | |
29 ngx_pool_t *pool) | |
30 { | |
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parents:
4076
diff
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31 ngx_err_t err; |
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export aio presence knowledge to prevent using "aio sendfile",
Igor Sysoev <igor@sysoev.ru>
parents:
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32 struct iocb *piocb[1]; |
04cfc09b8b8d
export aio presence knowledge to prevent using "aio sendfile",
Igor Sysoev <igor@sysoev.ru>
parents:
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33 ngx_event_t *ev; |
04cfc09b8b8d
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parents:
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34 ngx_event_aio_t *aio; |
3052 | 35 |
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parents:
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36 if (!ngx_file_aio) { |
3052 | 37 return ngx_read_file(file, buf, size, offset); |
38 } | |
39 | |
40 aio = file->aio; | |
41 | |
42 if (aio == NULL) { | |
43 aio = ngx_pcalloc(pool, sizeof(ngx_event_aio_t)); | |
44 if (aio == NULL) { | |
45 return NGX_ERROR; | |
46 } | |
47 | |
48 aio->file = file; | |
49 aio->fd = file->fd; | |
50 aio->event.data = aio; | |
51 aio->event.ready = 1; | |
52 aio->event.log = file->log; | |
53 file->aio = aio; | |
54 } | |
55 | |
56 ev = &aio->event; | |
57 | |
58 if (!ev->ready) { | |
59 ngx_log_error(NGX_LOG_ALERT, file->log, 0, | |
60 "second aio post for \"%V\"", &file->name); | |
61 return NGX_AGAIN; | |
62 } | |
63 | |
64 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, | |
65 "aio complete:%d @%O:%z %V", | |
66 ev->complete, offset, size, &file->name); | |
67 | |
68 if (ev->complete) { | |
69 ev->active = 0; | |
70 ev->complete = 0; | |
71 | |
72 if (aio->res >= 0) { | |
73 ngx_set_errno(0); | |
74 return aio->res; | |
75 } | |
76 | |
77 ngx_set_errno(-aio->res); | |
4076
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Bugfix: open_file_cache lost is_directio flag.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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78 |
37da005a5808
Bugfix: open_file_cache lost is_directio flag.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
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79 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
37da005a5808
Bugfix: open_file_cache lost is_directio flag.
Maxim Dounin <mdounin@mdounin.ru>
parents:
3777
diff
changeset
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80 "aio read \"%s\" failed", file->name.data); |
37da005a5808
Bugfix: open_file_cache lost is_directio flag.
Maxim Dounin <mdounin@mdounin.ru>
parents:
3777
diff
changeset
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81 |
3052 | 82 return NGX_ERROR; |
83 } | |
84 | |
85 ngx_memzero(&aio->aiocb, sizeof(struct iocb)); | |
86 | |
87 aio->aiocb.aio_data = (uint64_t) (uintptr_t) ev; | |
88 aio->aiocb.aio_lio_opcode = IOCB_CMD_PREAD; | |
89 aio->aiocb.aio_fildes = file->fd; | |
90 aio->aiocb.aio_buf = (uint64_t) (uintptr_t) buf; | |
91 aio->aiocb.aio_nbytes = size; | |
92 aio->aiocb.aio_offset = offset; | |
93 aio->aiocb.aio_flags = IOCB_FLAG_RESFD; | |
94 aio->aiocb.aio_resfd = ngx_eventfd; | |
95 | |
96 ev->handler = ngx_file_aio_event_handler; | |
97 | |
98 piocb[0] = &aio->aiocb; | |
99 | |
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6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
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100 if (io_submit(ngx_aio_ctx, 1, piocb) == 1) { |
3777
cd04f652478c
update event flags after successful io_submit()
Igor Sysoev <igor@sysoev.ru>
parents:
3294
diff
changeset
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101 ev->active = 1; |
cd04f652478c
update event flags after successful io_submit()
Igor Sysoev <igor@sysoev.ru>
parents:
3294
diff
changeset
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102 ev->ready = 0; |
cd04f652478c
update event flags after successful io_submit()
Igor Sysoev <igor@sysoev.ru>
parents:
3294
diff
changeset
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103 ev->complete = 0; |
cd04f652478c
update event flags after successful io_submit()
Igor Sysoev <igor@sysoev.ru>
parents:
3294
diff
changeset
|
104 |
3052 | 105 return NGX_AGAIN; |
106 } | |
107 | |
4129
6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
108 err = ngx_errno; |
3052 | 109 |
4129
6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
110 if (err == NGX_EAGAIN) { |
3052 | 111 return ngx_read_file(file, buf, size, offset); |
112 } | |
113 | |
4129
6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
114 ngx_log_error(NGX_LOG_CRIT, file->log, err, |
3052 | 115 "io_submit(\"%V\") failed", &file->name); |
116 | |
4129
6903dac6ad19
Fixing Linux AIO syscalls return value handling:
Igor Sysoev <igor@sysoev.ru>
parents:
4076
diff
changeset
|
117 if (err == NGX_ENOSYS) { |
3294
04cfc09b8b8d
export aio presence knowledge to prevent using "aio sendfile",
Igor Sysoev <igor@sysoev.ru>
parents:
3052
diff
changeset
|
118 ngx_file_aio = 0; |
3052 | 119 return ngx_read_file(file, buf, size, offset); |
120 } | |
121 | |
122 return NGX_ERROR; | |
123 } | |
124 | |
125 | |
126 static void | |
127 ngx_file_aio_event_handler(ngx_event_t *ev) | |
128 { | |
129 ngx_event_aio_t *aio; | |
130 | |
131 aio = ev->data; | |
132 | |
133 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ev->log, 0, | |
134 "aio event handler fd:%d %V", aio->fd, &aio->file->name); | |
135 | |
136 aio->handler(ev); | |
137 } |