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use lstat() for WebDAV DELETE, COPY, and MOVE to handle symlinks
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opening files fixes:
*) use non-blocking open() not to hang on FIFO files, etc.
*) do not log misleading errno in "not a regular file" error
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signal processing stability:
*) use sys_errlist[] in signal handler instead
of non Async-Signal-Safe strerror_r()
*) do not update time in the timer signal handler,
since localtime_r() is not Async-Signal-Safe function
*) use previously cached GMT offset value to update time from a signal handler
*) change ngx_time_update() interface since there are no notification methods
those return time
*) introduce ngx_time_sigsafe_update() to update the error log time only
*) change ngx_time_update() interface
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Fix a bug introduced in r2032: After a child process has read a terminate
message from a channel, the process tries to read the channel again.
The kernel (at least FreeBSD) may preempt the process and sends a SIGIO
signal to a master process. The master process sends a new terminate message,
the kernel switches again to the the child process, and the child process
reads the messages instead of an EAGAIN error. And this may repeat over
and over. Being that the child process can not exit the cycle and test
the termination flag set by the message handler.
The fix disallow the master process to send a new terminate message on
SIGIO signal reception. It may send the message only on SIGALARM signal.
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use setproctitle("%s", title)
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fix "if (!-x ...)"
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r3202, r3203, r3383, r3388, r3417, r3418:
Win32 (mostly) and some Unix file related fixes:
*) preserve errno while ngx_free()
*) win32 ngx_file_info() utf8 support
*) delete Win95 code
*) log file name for read/write errors
*) test incomplete WriteFile()
*) handle short pwrite() to log an error cause: ENOSPC, EDQUOT, or EFBIG
*) uniform ngx_directio_on/off() interface with other file functions
*) do not create Win32 drive letter in ngx_create_full_path()
*) ignore EACCES errors for top level directories in ngx_create_full_path()
*) fix Win32 error messages when an temporary file replaces an existent file:
*) do not rename an already renamed file
*) now ngx_win32_rename_file() returns error code
*) do not log failure inside ngx_win32_rename_file()
*) fix Win32 error message when an temporary file replaces an existent file:
return at once if ngx_win32_rename_file() was not failed
and do not try to delete already the renamed temporary file
*) skip URI trailing spaces under Win32
*) disable Win32 short file names
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ngx_http_autoindex_module fixes:
*) reset cached dirent.d_type after stat()
this fixes slash after link to a directory in ngx_http_autoindex_module;
*) use cached dirent.d_type as hint on all systems
the issues has been introduced in r2235
*) fix ngx_utf8_cpystrn(): it did not fully copy utf-8 string
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fix posix_memalign() error handling
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allow cross device temporary files atomic copying
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cache management fixes:
*) separate cache loader process
*) use real file cache length, this fixes cache size counting for responses
without "Content-Length" header and 304 responses.
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style fixes
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twice termination delay only after SIGALRM, otherwise many separate SIGCHLD
and SIGIO signals quickly increase delay to the level when SIGKILL is sent
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without any other flags. On the other hand, Unix requires at least the write
flag to be set together with O_APPEND.
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therefore fallback to stat() if dirent.d_type is not set,
this fixes slash after directory name in ngx_http_autoindex_module;
the issue has been introduced in r2235
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*) move src/os/.../ngx_types.h's content into src/os/.../ngx_files.h and
delete src/os/.../ngx_types.h
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