diff options
Diffstat (limited to 'deps/mysqllite/mysys/my_sync.c')
| -rw-r--r-- | deps/mysqllite/mysys/my_sync.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/deps/mysqllite/mysys/my_sync.c b/deps/mysqllite/mysys/my_sync.c deleted file mode 100644 index e33a9342af..0000000000 --- a/deps/mysqllite/mysys/my_sync.c +++ /dev/null @@ -1,175 +0,0 @@ -/* Copyright (C) 2003 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 */ - -#include "mysys_priv.h" -#include "mysys_err.h" -#include <errno.h> - -/* - Sync data in file to disk - - SYNOPSIS - my_sync() - fd File descritor to sync - my_flags Flags (now only MY_WME is supported) - - NOTE - If file system supports its, only file data is synced, not inode data. - - MY_IGNORE_BADFD is useful when fd is "volatile" - not protected by a - mutex. In this case by the time of fsync(), fd may be already closed by - another thread, or even reassigned to a different file. With this flag - - MY_IGNORE_BADFD - such a situation will not be considered an error. - (which is correct behaviour, if we know that the other thread synced the - file before closing) - - RETURN - 0 ok - -1 error -*/ - -int my_sync(File fd, myf my_flags) -{ - int res; - DBUG_ENTER("my_sync"); - DBUG_PRINT("my",("Fd: %d my_flags: %d", fd, my_flags)); - - do - { -#if defined(F_FULLFSYNC) - /* - In Mac OS X >= 10.3 this call is safer than fsync() (it forces the - disk's cache and guarantees ordered writes). - */ - if (!(res= fcntl(fd, F_FULLFSYNC, 0))) - break; /* ok */ - /* Some file systems don't support F_FULLFSYNC and fail above: */ - DBUG_PRINT("info",("fcntl(F_FULLFSYNC) failed, falling back")); -#endif -#if defined(HAVE_FDATASYNC) && HAVE_DECL_FDATASYNC - res= fdatasync(fd); -#elif defined(HAVE_FSYNC) - res= fsync(fd); -#elif defined(_WIN32) - res= my_win_fsync(fd); -#else -#error Cannot find a way to sync a file, durability in danger - res= 0; /* No sync (strange OS) */ -#endif - } while (res == -1 && errno == EINTR); - - if (res) - { - int er= errno; - if (!(my_errno= er)) - my_errno= -1; /* Unknown error */ - if ((my_flags & MY_IGNORE_BADFD) && - (er == EBADF || er == EINVAL || er == EROFS)) - { - DBUG_PRINT("info", ("ignoring errno %d", er)); - res= 0; - } - else if (my_flags & MY_WME) - my_error(EE_SYNC, MYF(ME_BELL+ME_WAITTANG), my_filename(fd), my_errno); - } - DBUG_RETURN(res); -} /* my_sync */ - - -static const char cur_dir_name[]= {FN_CURLIB, 0}; - - -/* - Force directory information to disk. - - SYNOPSIS - my_sync_dir() - dir_name the name of the directory - my_flags flags (MY_WME etc) - - RETURN - 0 if ok, !=0 if error -*/ - -#ifdef NEED_EXPLICIT_SYNC_DIR - -int my_sync_dir(const char *dir_name, myf my_flags) -{ - File dir_fd; - int res= 0; - const char *correct_dir_name; - DBUG_ENTER("my_sync_dir"); - DBUG_PRINT("my",("Dir: '%s' my_flags: %d", dir_name, my_flags)); - /* Sometimes the path does not contain an explicit directory */ - correct_dir_name= (dir_name[0] == 0) ? cur_dir_name : dir_name; - /* - Syncing a dir may give EINVAL on tmpfs on Linux, which is ok. - EIO on the other hand is very important. Hence MY_IGNORE_BADFD. - */ - if ((dir_fd= my_open(correct_dir_name, O_RDONLY, MYF(my_flags))) >= 0) - { - if (my_sync(dir_fd, MYF(my_flags | MY_IGNORE_BADFD))) - res= 2; - if (my_close(dir_fd, MYF(my_flags))) - res= 3; - } - else - res= 1; - DBUG_RETURN(res); -} - -#else /* NEED_EXPLICIT_SYNC_DIR */ - -int my_sync_dir(const char *dir_name __attribute__((unused)), - myf my_flags __attribute__((unused))) -{ - return 0; -} - -#endif /* NEED_EXPLICIT_SYNC_DIR */ - - -/* - Force directory information to disk. - - SYNOPSIS - my_sync_dir_by_file() - file_name the name of a file in the directory - my_flags flags (MY_WME etc) - - RETURN - 0 if ok, !=0 if error -*/ - -#ifdef NEED_EXPLICIT_SYNC_DIR - -int my_sync_dir_by_file(const char *file_name, myf my_flags) -{ - char dir_name[FN_REFLEN]; - size_t dir_name_length; - dirname_part(dir_name, file_name, &dir_name_length); - return my_sync_dir(dir_name, my_flags); -} - -#else /* NEED_EXPLICIT_SYNC_DIR */ - -int my_sync_dir_by_file(const char *file_name __attribute__((unused)), - myf my_flags __attribute__((unused))) -{ - return 0; -} - -#endif /* NEED_EXPLICIT_SYNC_DIR */ - |