mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 13:02:28 +01:00
4e92af9f43
Bug#24509 - 2048 file descriptor limit on windows needs increasing, also
WL#3049 - improved Windows I/O
The patch replaces the use of the POSIX I/O interfaces in mysys on Windows with
the Win32 API calls (CreateFile, WriteFile, etc). The Windows HANDLE for the open
file is stored in the my_file_info struct, along with a flag for append mode
because the Windows API does not support opening files in append mode in all cases)
The default max open files has been increased to 16384 and can be increased further
by setting --max-open-files=<value> during the server start.
Another major change in this patch that almost all Windows specific file IO code
has been moved to a new file my_winfile.c, greatly reducing the amount of code
in #ifdef blocks within mysys, thus improving readability.
Minor enhancements:
- my_(f)stat() is changed to use __stati64 structure with 64 file size
and timestamps. It will return correct file size now (C runtime implementation
used to report outdated information)
- my_lock on Windows is prepared to handle additional timeout parameter
- after review : changed __WIN__ to _WIN32 in the new and changed code.
123 lines
4.9 KiB
C
123 lines
4.9 KiB
C
/* Copyright (C) 2008 MySQL AB
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
/*
|
|
Convert Windows API error (GetLastError() to Posix equivalent (errno)
|
|
The exported function my_osmaperr() is modelled after and borrows
|
|
heavily from undocumented _dosmaperr()(found of the static Microsoft C runtime).
|
|
*/
|
|
|
|
#include <my_global.h>
|
|
#include <my_sys.h>
|
|
|
|
|
|
struct errentry
|
|
{
|
|
unsigned long oscode; /* OS return value */
|
|
int sysv_errno; /* System V error code */
|
|
};
|
|
|
|
static struct errentry errtable[]= {
|
|
{ ERROR_INVALID_FUNCTION, EINVAL }, /* 1 */
|
|
{ ERROR_FILE_NOT_FOUND, ENOENT }, /* 2 */
|
|
{ ERROR_PATH_NOT_FOUND, ENOENT }, /* 3 */
|
|
{ ERROR_TOO_MANY_OPEN_FILES, EMFILE }, /* 4 */
|
|
{ ERROR_ACCESS_DENIED, EACCES }, /* 5 */
|
|
{ ERROR_INVALID_HANDLE, EBADF }, /* 6 */
|
|
{ ERROR_ARENA_TRASHED, ENOMEM }, /* 7 */
|
|
{ ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, /* 8 */
|
|
{ ERROR_INVALID_BLOCK, ENOMEM }, /* 9 */
|
|
{ ERROR_BAD_ENVIRONMENT, E2BIG }, /* 10 */
|
|
{ ERROR_BAD_FORMAT, ENOEXEC }, /* 11 */
|
|
{ ERROR_INVALID_ACCESS, EINVAL }, /* 12 */
|
|
{ ERROR_INVALID_DATA, EINVAL }, /* 13 */
|
|
{ ERROR_INVALID_DRIVE, ENOENT }, /* 15 */
|
|
{ ERROR_CURRENT_DIRECTORY, EACCES }, /* 16 */
|
|
{ ERROR_NOT_SAME_DEVICE, EXDEV }, /* 17 */
|
|
{ ERROR_NO_MORE_FILES, ENOENT }, /* 18 */
|
|
{ ERROR_LOCK_VIOLATION, EACCES }, /* 33 */
|
|
{ ERROR_BAD_NETPATH, ENOENT }, /* 53 */
|
|
{ ERROR_NETWORK_ACCESS_DENIED, EACCES }, /* 65 */
|
|
{ ERROR_BAD_NET_NAME, ENOENT }, /* 67 */
|
|
{ ERROR_FILE_EXISTS, EEXIST }, /* 80 */
|
|
{ ERROR_CANNOT_MAKE, EACCES }, /* 82 */
|
|
{ ERROR_FAIL_I24, EACCES }, /* 83 */
|
|
{ ERROR_INVALID_PARAMETER, EINVAL }, /* 87 */
|
|
{ ERROR_NO_PROC_SLOTS, EAGAIN }, /* 89 */
|
|
{ ERROR_DRIVE_LOCKED, EACCES }, /* 108 */
|
|
{ ERROR_BROKEN_PIPE, EPIPE }, /* 109 */
|
|
{ ERROR_DISK_FULL, ENOSPC }, /* 112 */
|
|
{ ERROR_INVALID_TARGET_HANDLE, EBADF }, /* 114 */
|
|
{ ERROR_INVALID_HANDLE, EINVAL }, /* 124 */
|
|
{ ERROR_WAIT_NO_CHILDREN, ECHILD }, /* 128 */
|
|
{ ERROR_CHILD_NOT_COMPLETE, ECHILD }, /* 129 */
|
|
{ ERROR_DIRECT_ACCESS_HANDLE, EBADF }, /* 130 */
|
|
{ ERROR_NEGATIVE_SEEK, EINVAL }, /* 131 */
|
|
{ ERROR_SEEK_ON_DEVICE, EACCES }, /* 132 */
|
|
{ ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, /* 145 */
|
|
{ ERROR_NOT_LOCKED, EACCES }, /* 158 */
|
|
{ ERROR_BAD_PATHNAME, ENOENT }, /* 161 */
|
|
{ ERROR_MAX_THRDS_REACHED, EAGAIN }, /* 164 */
|
|
{ ERROR_LOCK_FAILED, EACCES }, /* 167 */
|
|
{ ERROR_ALREADY_EXISTS, EEXIST }, /* 183 */
|
|
{ ERROR_FILENAME_EXCED_RANGE, ENOENT }, /* 206 */
|
|
{ ERROR_NESTING_NOT_ALLOWED, EAGAIN }, /* 215 */
|
|
{ ERROR_NOT_ENOUGH_QUOTA, ENOMEM } /* 1816 */
|
|
};
|
|
|
|
/* size of the table */
|
|
#define ERRTABLESIZE (sizeof(errtable)/sizeof(errtable[0]))
|
|
|
|
/* The following two constants must be the minimum and maximum
|
|
values in the (contiguous) range of Exec Failure errors. */
|
|
#define MIN_EXEC_ERROR ERROR_INVALID_STARTING_CODESEG
|
|
#define MAX_EXEC_ERROR ERROR_INFLOOP_IN_RELOC_CHAIN
|
|
|
|
/* These are the low and high value in the range of errors that are
|
|
access violations */
|
|
#define MIN_EACCES_RANGE ERROR_WRITE_PROTECT
|
|
#define MAX_EACCES_RANGE ERROR_SHARING_BUFFER_EXCEEDED
|
|
|
|
|
|
static int get_errno_from_oserr(unsigned long oserrno)
|
|
{
|
|
int i;
|
|
|
|
/* check the table for the OS error code */
|
|
for (i= 0; i < ERRTABLESIZE; ++i)
|
|
{
|
|
if (oserrno == errtable[i].oscode)
|
|
{
|
|
return errtable[i].sysv_errno;
|
|
}
|
|
}
|
|
|
|
/* The error code wasn't in the table. We check for a range of */
|
|
/* EACCES errors or exec failure errors (ENOEXEC). Otherwise */
|
|
/* EINVAL is returned. */
|
|
|
|
if (oserrno >= MIN_EACCES_RANGE && oserrno <= MAX_EACCES_RANGE)
|
|
return EACCES;
|
|
else if (oserrno >= MIN_EXEC_ERROR && oserrno <= MAX_EXEC_ERROR)
|
|
return ENOEXEC;
|
|
else
|
|
return EINVAL;
|
|
}
|
|
|
|
/* Set errno corresponsing to GetLastError() value */
|
|
void my_osmaperr ( unsigned long oserrno)
|
|
{
|
|
errno= get_errno_from_oserr(oserrno);
|
|
}
|