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Similarly to 6822:c045b4926b2c, environment variables introduced with
the "env" directive (and "NGINX_BPF_MAPS" added by QUIC) are now allocated
via ngx_alloc(), and explicitly freed by a cleanup handler if no longer used.
In collaboration with Sergey Kandaurov.
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The quic kernel bpf helper inspects packet payload for DCID, extracts key
and routes the packet into socket matching the key.
Due to reuseport feature, each worker owns a personal socket, which is
identified by the same key, used to create DCID.
BPF objects are locked in RAM and are subject to RLIMIT_MEMLOCK.
The "ulimit -l" command may be used to setup proper limits, if maps
cannot be created with EPERM or updated with ETOOLONG.
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When installing or running from a non-root user it is sometimes required to
override default, compiled in error log path. There was no way to do this
without rebuilding the binary (ticket #147).
This patch introduced "-e" command line option which allows one to override
compiled in error log path.
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When changing binary, sending a SIGTERM to the new binary's master process
should not remove inherited UNIX sockets unless the old binary's master
process has exited.
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On some systems, it's possible that reaper of orphaned processes is
set to something other than "init" process. On such systems, the
changing binary procedure did not work.
The fix is to check if PPID has changed, instead of assuming it's
always 1 for orphaned processes.
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On Windows, a worker process does not call ngx_slab_init() from
ngx_init_zone_pool(), so ngx_slab_max_size, ngx_slab_exact_size,
and ngx_slab_exact_shift were left uninitialized.
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The directive configures a timeout to be used when gracefully shutting down
worker processes. When the timer expires, nginx will try to close all
the connections currently open to facilitate shutdown.
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On exit environment allocated from a pool is no longer available, leading
to a segmentation fault if, for example, a library tries to use it from
an atexit() handler.
Fix is to allocate environment via ngx_alloc() instead, and explicitly
free it using a pool cleanup handler if it's no longer used (e.g., on
configuration reload).
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SSLeay_version() and SSLeay() are no longer available if OPENSSL_API_COMPAT
is set to 0x10100000L. Switched to using OpenSSL_version() instead.
Additionally, we now compare version strings instead of version numbers,
and this correctly works for LibreSSL as well.
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Broken in 5eb4d7541107 (1.9.6), fix somehow missed in 3600bbfb43e3.
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
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The auto/module script is extended to understand ngx_module_link=DYNAMIC.
When set, it links the module as a shared object rather than statically
into nginx binary. The module can later be loaded using the "load_module"
directive.
New auto/module parameter ngx_module_order allows to define module loading
order in complex cases. By default the order is set based on ngx_module_type.
3rd party modules can be compiled dynamically using the --add-dynamic-module
configure option, which will preset ngx_module_link to "DYNAMIC" before
calling the module config script.
Win32 support is rudimentary, and only works when using MinGW gcc (which
is able to handle exports/imports automatically).
In collaboration with Ruslan Ermilov.
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If enabled, workers are bound to available CPUs, each worker to once CPU
in order. If there are more workers than available CPUs, remaining are
bound in a loop, starting again from the first available CPU.
The optional mask parameter defines which CPUs are available for automatic
binding.
In collaboration with Vladimir Homutov.
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The code for displaying version info and configuration info seemed to be
cluttering up the main function. I was finding it hard to read main. This
extracts out all of the logic for displaying version and configuration info
into its own function, thus making main easier to read.
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If the -T option is passed, additionally to configuration test, configuration
files are output to stdout.
In the debug mode, configuration files are kept in memory and can be accessed
using a debugger.
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It was only needed by the just removed rtsig module.
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Casting a "const char *" to "char *" doesn't work on older gcc versions.
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It's mostly dead code and the original idea of worker threads has been rejected.
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If set, its value is output in "nginx -v" and in the error log.
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While ngx_get_full_name() might have a bit more descriptive arguments,
the ngx_conf_full_name() is generally easier to use when parsing
configuration and limits exposure of cycle->prefix / cycle->conf_prefix
details.
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The ngx_get_full_name() function takes more readable arguments list.
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The stderr redirection code is moved to ngx_log_redirect_stderr().
The opening of the default log code is moved to ngx_log_open_default().
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If "stderr" was specified in one of the "error_log" directives,
stderr is not redirected to the first error_log on startup,
configuration reload, and reopening log files.
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On Win32 platforms 0 is used to indicate errors in file operations, so
comparing against -1 is not portable.
This was not much of an issue in patched code, since only ngx_fd_info() test
is actually reachable on Win32 and in worst case it might result in bogus
error log entry.
Patch by Piotr Sikora.
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Found by Coverity (CID 992320).
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Patch by Piotr Sikora.
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The parameter will set the number of worker processes to the
autodetected number of available CPU cores.
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Ensure that the path supplied always ends with a `/' except when empty.
An empty value now corresponds to the current directory instead of `/'.
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After first upgrade it was ignored since r4020 (1.1.1, 1.0.9) as
ngx_daemonized wasn't set.
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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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The bug has been introduced in r3799.
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*) now pools are aligned to 16 bytes
*) forbidden to set non-aligned pool sizes
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