nginx.git/src/core/ngx_open_file_cache.c, branch release-1.28.3 nginx Fixed logging in close error handling. 2016-03-30T23:33:50+00:00 Sergey Kandaurov pluknet@nginx.com 2016-03-30T23:33:50+00:00 2e25f340b8848561a00993f88bdf1723b77fbabe 






Fixed typo in the error message.
2015-08-11T07:28:00+00:00

Andrei Belov
defan@nginx.com

2015-08-11T07:28:00+00:00

9500e19919b5410b8bc17dbd3d705eef8cf5b1d8












Disable symlinks: removed recursive call of ngx_file_o_path_info().
2013-09-02T16:06:03+00:00

Valentin Bartenev
vbart@nginx.com

2013-09-02T16:06:03+00:00

42910391cd9380ea0632d75f745f0332f9350c5d

It is surplus.





It is surplus.







Disable symlinks: use O_PATH to open path components.
2013-09-02T04:07:59+00:00

Valentin Bartenev
vbart@nginx.com

2013-09-02T04:07:59+00:00

7b373841407b198759276242ab2dc4e5f78adb21

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.





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.







Format specifier fixes in error logging.
2013-08-20T16:47:16+00:00

Sergey Kandaurov
pluknet@nginx.com

2013-08-20T16:47:16+00:00

e09741ba06fd4870d90be6df7c59cd4e6da8a8b0












Fix of rbtree lookup on hash collisions.
2012-02-27T22:15:39+00:00

Maxim Dounin
mdounin@mdounin.ru

2012-02-27T22:15:39+00:00

7ca6c1ff782afbb83b9f17d6552566c823247e29

Previous code incorrectly assumed that nodes with identical keys are linked
together.  This might not be true after tree rebalance.

Patch by Lanshun Zhou.





Previous code incorrectly assumed that nodes with identical keys are linked
together.  This might not be true after tree rebalance.

Patch by Lanshun Zhou.







Disable symlinks: added the "from" parameter support to the open file cache.
2012-02-27T16:46:57+00:00

Valentin Bartenev
vbart@nginx.com

2012-02-27T16:46:57+00:00

346791187f358f852c2434f29a86754e7ab10f5b












Disable symlinks: use O_SEARCH|O_DIRECTORY to open path components.
2012-02-21T15:10:13+00:00

Valentin Bartenev
vbart@nginx.com

2012-02-21T15:10:13+00:00

86c5513ecb34ab90027935c329e74b41fdc3a49e












Disable symlinks: don't allow creating or truncating a file via a symlink in
2012-02-21T15:04:41+00:00

Valentin Bartenev
vbart@nginx.com

2012-02-21T15:04:41+00:00

15b3173c5e5108287f5d74126f29854b14c1db94

the last path component if "if_not_owner" parameter is used.

To prevent race condition we have to open a file before checking its owner and
there's no way to change access flags for already opened file descriptor, so
we disable symlinks for the last path component at all if flags allow creating
or truncating the file.





the last path component if "if_not_owner" parameter is used.

To prevent race condition we have to open a file before checking its owner and
there's no way to change access flags for already opened file descriptor, so
we disable symlinks for the last path component at all if flags allow creating
or truncating the file.







Disable symlinks: cleanups once again.
2012-02-21T15:01:25+00:00

Valentin Bartenev
vbart@nginx.com

2012-02-21T15:01:25+00:00

8c27e6429aa634091ad07e02bfee91084497549f

In collaboration with Ruslan Ermilov.





In collaboration with Ruslan Ermilov.