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*) Made sure to initialize the entire ngx_file_t structure.
Found by Coverity.
*) Correct plural form for "path" in the whole source base.
*) Removed conditional compilation from waitpid() error test.
There are reports that call to a signal handler for an exited process
despite waitpid() already called for the process may happen on Linux
as well.
*) Style, parentheses instead of braces in misc/GNUMakefile.
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This fixes unwanted/incorrect cpu_affinity use on dead worker processes
respawn. While this is not ideal, it's expected to be better when previous
situation where multiple processes were spawn with identical CPU affinity
set.
Reported by Charles Chen.
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*) Resolver: fixed possible memory leak in ngx_resolver_create().
*) Explicitly ignore returned value from unlink() in ngx_open_tempfile().
*) Explicitly ignore returned value from close() in ngx_event_core_init_conf().
*) Added three missing checks for NULL after ngx_array_push() calls.
*) Crypt: fixed handling of corrupted SSHA entries in password file.
*) Mark logically dead code with corresponding comment.
Found by / prodded by Coverity.
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Fixed compilation with -Wmissing-prototypes. Added a commented
out -Wmissing-prototypes to CFLAGS. It is commented out to not break
builds with 3rd party modules.
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Made sure to initialize the entire "struct flock" allocated on stack.
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HP-UX needs _HPUX_ALT_XOPEN_SOCKET_API to be defined to be able to
use various POSIX versions of networking functions. Notably sendmsg()
resulted in "sendmsg() failed (9: Bad file number)" alerts without it.
See xopen_networking(7) for more details.
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*) Fixed spelling of "endianness", and called it "byte ordering" in the
user visible part.
*) Fixed return type of ngx_strerror_init().
*) Fixed a harmless error in spelling of "Connection: close" when computing
the response header length.
*) Style.
*) Added code to look up Google perftools in /opt/local/, for MacPorts.
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*) Resolver: fixed format specification.
Patch by Yichun Zhang (agentzh).
*) Support for IPv6 literals and an optional port in resolver.
*) Fixed crash in ngx_resolver_cleanup_tree().
If sending a DNS request fails with an error (e.g., when mistakenly
trying to send it to a local IP broadcast), such a request is not
deleted if there are clients waiting on it. However, it was still
erroneously removed from the queue. Later ngx_resolver_cleanup_tree()
attempted to remove it from the queue again that resulted in a NULL
pointer dereference.
*) When "resolver" is configured with a domain name, only the first
resolved address was used. Now all addresses will be used.
*) Fixed segfault with poll and resolver used.
Poll event method needs ngx_cycle->files to work, and use of
ngx_exit_cycle without files set caused null pointer dereference in
resolver's cleanup on udp socket close.
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Fixed compilation with -DNGX_DEBUG_MALLOC on FreeBSD 10.
After jemalloc 3.0.0 import there is no _malloc_options symbol, it has
been replaced with the malloc_conf one with a different syntax.
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In case of EMFILE/ENFILE returned from accept() we disable accept events,
and (in case of no accept mutex used) arm timer to re-enable them later.
With accept mutex we just drop it, and rely on normal accept mutex handling
to re-enable accept events once it's acquired again.
As we now handle errors in question, logging level was changed to "crit"
(instead of "alert" used for unknown errors).
Note: the code might call ngx_enable_accept_events() multiple times if
there are many listen sockets. The ngx_enable_accept_events() function was
modified to check if connection is already active (via c->read->active) and
skip it then, thus making multiple calls safe.
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Not using full chain passed is ok as consumers are expected to check
event's ready flag to determine if another call is needed, not the
returned size.
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We now stop on IOV_MAX iovec entries only if we are going to add new one,
i.e. next buffer can't be coalesced into last iovec.
This also fixes incorrect checks for trailer creation on FreeBSD and
Mac OS X, header.nelts was checked instead of trailer.nelts.
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The "complete" flag wasn't cleared on loop iteration start, resulting in
broken behaviour if there were more than IOV_MAX buffers and first
iteration was fully completed (and hence the "complete" flag was set
to 1).
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preceding the function. No functional changes.
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POSIX doesn't require it to be defined, and Debian GNU/Hurd doesn't define
it. Note that if there is no MAX_PATH defined we have to use realpath()
with NULL argument and free() the result.
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Most of the systems have it included due to namespace pollution, but
relying on this is a bad idea. Explicit include is required for at least
Debian GNU/Hurd.
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This is expected to ensure smoother operation on reload (and with less
chance of listen queue overflows).
Prodded by Igor Sysoev.
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ZFS reports incorrect st_blocks until file settles on disk, and this
may take a while (i.e. just after creation of a file the st_blocks value
is incorrect). As a workaround we now use st_blocks only if
st_blocks * 512 > st_size, this should fix ZFS problems while still
preserving accuracy for other filesystems.
The problem had appeared in r3900 (1.0.1).
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Solaris has AT_FDCWD defined to unsigned value, and comparison of a file
descriptor with it causes warnings in modern versions of gcc. Explicitly
cast AT_FDCWD to ngx_fd_t to resolve these warnings.
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This inaccurate detection by using sysconf(_SC_NPROCESSORS_ONLN) can improve
usage of the mutex lock optimization on multicore systems.
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The aio_return() must be called regardless of the error returned by
aio_error(). Not calling it resulted in various problems up to segmentation
faults (as AIO events are level-triggered and were reported again and again).
Additionally, in "aio sendfile" case r->blocked was incremented in case of
error returned from ngx_file_aio_read(), thus causing request hangs.
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Second argument (cpusetsize) is size in bytes, not in bits. Previously
used constant 32 resulted in reading of uninitialized memory and caused
EINVAL to be returned on some Linux kernels.
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FreeBSD kernel checks headers/trailers pointer against NULL, not
corresponding count. Passing NULL if there are no headers/trailers
helps to avoid unneeded work in kernel, as well as unexpected 0 bytes
GIO in traces.
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Requested by Igor Sysoev.
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If process exited abnormally while holding lock on some shared memory zone -
unlock it. It may be not safe thing to do (as crash with lock held may
result in corrupted shared memory structure, and other processes will
subsequently crash while trying to access shared data), therefore complain
loudly if unlock succeeds.
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It is currently used from master process on abnormal worker termination to
unlock accept mutex (unlocking of accept mutex was broken in 1.0.2). It is
expected to be used in the future to unlock other mutexes as well.
Shared mutex code was rewritten to make this possible in a safe way, i.e.
with a check if lock was actually held by the exited process. We again use
pid to lock mutex, and use separate atomic variable for a count of processes
waiting in sem_wait().
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A fix for the broken build applied.
Patch from Igor Sysoev.
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for output of ./configure options, etc., since ngx_log_stderr() output
length is limited by 2048 characters defined as NGX_MAX_ERROR_STR.
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Previous patch missed special case for one iovec, it needs total bytes
written to be returned as well.
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Previously result of last iteration's writev() was returned. This was
unnoticed as return value was only used if chain contained only one or
two buffers.
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Fixed nearby grammar errors.
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syscall(2) uses usual libc convention, it returns -1 on error and
sets errno. Obsolete _syscall(2) returns negative value of error.
Thanks to Hagai Avrahami.
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in favour of their CommonCrypto library. This change adds a work-around
that allows nginx to still be built on Lion with OpenSSL.
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On file retest open_file_cache lost is_directio if file wasn't changed.
This caused unaligned operations under Linux to fail with EINVAL.
It wasn't noticeable with AIO though, as errors wasn't properly logged.
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Non-daemon mode is currently used by supervisord, daemontools and so on
or during debugging. The NOACCEPT signal is only used for online upgrade
which is not supported when nginx is run under supervisord, etc.,
so this change should not break existant setups.
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NetBSD 5.0+ has SO_ACCEPTFILTER support merged from FreeBSD, and having
accept filter check in FreeBSD-specific ngx_freebsd_config.h prevents it
from being used on NetBSD. Therefore move the check into configure (and
do the same for Linux-specific TCP_DEFER_ACCEPT, just to be in line).
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patch by Maxim Dounin
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number of spinlock spins are increased twice
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instead of file length rounded to a file system block size.
There is no similar way on Windows, so rounding to a cache->bsize is kept.
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