Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_darwin.h @ 5356:acd51b0f6fd4
Disable symlinks: use O_PATH to open path components.
It was introduced in Linux 2.6.39, glibc 2.14 and allows to obtain
file descriptors without actually opening files. Thus made it possible
to traverse path with openat() syscalls without the need to have read
permissions for path components. It is effectively emulates O_SEARCH
which is missing on Linux.
O_PATH is used in combination with O_RDONLY. The last one is ignored
if O_PATH is used, but it allows nginx to not fail when it was built on
modern system (i.e. glibc 2.14+) and run with a kernel older than 2.6.39.
Then O_PATH is unknown to the kernel and ignored, while O_RDONLY is used.
Sadly, fstat() is not working with O_PATH descriptors till Linux 3.6.
As a workaround we fallback to fstatat() with the AT_EMPTY_PATH flag
that was introduced at the same time as O_PATH.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Mon, 02 Sep 2013 08:07:59 +0400 |
parents | d620f497c50f |
children |
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:
362
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:
362
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 | 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:
362
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:
362
diff
changeset
|
6 |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
362
diff
changeset
|
7 |
2128
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
8 #ifndef _NGX_DARWIN_H_INCLUDED_ |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
9 #define _NGX_DARWIN_H_INCLUDED_ |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
10 |
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
11 |
4223
1b779cb69dc8
malloc() debugging on MacOSX.
Igor Sysoev <igor@sysoev.ru>
parents:
2128
diff
changeset
|
12 void ngx_debug_init(void); |
2128
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
13 ngx_chain_t *ngx_darwin_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in, |
493 | 14 off_t limit); |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
15 |
2128
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
16 extern int ngx_darwin_kern_osreldate; |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
17 extern int ngx_darwin_hw_ncpu; |
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
18 extern u_long ngx_darwin_net_inet_tcp_sendspace; |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
19 |
4223
1b779cb69dc8
malloc() debugging on MacOSX.
Igor Sysoev <igor@sysoev.ru>
parents:
2128
diff
changeset
|
20 extern ngx_uint_t ngx_debug_malloc; |
1b779cb69dc8
malloc() debugging on MacOSX.
Igor Sysoev <igor@sysoev.ru>
parents:
2128
diff
changeset
|
21 |
183
4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
22 |
2128
345a014436d4
*) move Darwin support to separate files
Igor Sysoev <igor@sysoev.ru>
parents:
1771
diff
changeset
|
23 #endif /* _NGX_DARWIN_H_INCLUDED_ */ |