diff options
Diffstat (limited to 'mysql/mysys/my_read.c')
-rw-r--r-- | mysql/mysys/my_read.c | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/mysql/mysys/my_read.c b/mysql/mysys/my_read.c deleted file mode 100644 index c80ad1c..0000000 --- a/mysql/mysys/my_read.c +++ /dev/null @@ -1,107 +0,0 @@ -/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. - - 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ - -#include "mysys_priv.h" -#include "my_sys.h" -#include "mysys_err.h" -#include <my_base.h> -#include <errno.h> -#include "my_thread_local.h" - -/* - Read a chunk of bytes from a file with retry's if needed - - The parameters are: - File descriptor - Buffer to hold at least Count bytes - Bytes to read - Flags on what to do on error - - Return: - -1 on error - 0 if flag has bits MY_NABP or MY_FNABP set - N number of bytes read. -*/ - -size_t my_read(File Filedes, uchar *Buffer, size_t Count, myf MyFlags) -{ - size_t readbytes, save_count; - DBUG_ENTER("my_read"); - DBUG_PRINT("my",("fd: %d Buffer: %p Count: %lu MyFlags: %d", - Filedes, Buffer, (ulong) Count, MyFlags)); - save_count= Count; - - for (;;) - { - errno= 0; /* Linux, Windows don't reset this on EOF/success */ -#ifdef _WIN32 - readbytes= my_win_read(Filedes, Buffer, Count); -#else - readbytes= read(Filedes, Buffer, Count); -#endif - DBUG_EXECUTE_IF ("simulate_file_read_error", - { - errno= ENOSPC; - readbytes= (size_t) -1; - DBUG_SET("-d,simulate_file_read_error"); - DBUG_SET("-d,simulate_my_b_fill_error"); - }); - - if (readbytes != Count) - { - set_my_errno(errno); - if (errno == 0 || (readbytes != (size_t) -1 && - (MyFlags & (MY_NABP | MY_FNABP)))) - set_my_errno(HA_ERR_FILE_TOO_SHORT); - DBUG_PRINT("warning",("Read only %d bytes off %lu from %d, errno: %d", - (int) readbytes, (ulong) Count, Filedes, - my_errno())); - - if ((readbytes == 0 || (int) readbytes == -1) && errno == EINTR) - { - DBUG_PRINT("debug", ("my_read() was interrupted and returned %ld", - (long) readbytes)); - continue; /* Interrupted */ - } - - if (MyFlags & (MY_WME | MY_FAE | MY_FNABP)) - { - char errbuf[MYSYS_STRERROR_SIZE]; - if (readbytes == (size_t) -1) - my_error(EE_READ, MYF(0), my_filename(Filedes), - my_errno(), my_strerror(errbuf, sizeof(errbuf), my_errno())); - else if (MyFlags & (MY_NABP | MY_FNABP)) - my_error(EE_EOFERR, MYF(0), my_filename(Filedes), - my_errno(), my_strerror(errbuf, sizeof(errbuf), my_errno())); - } - if (readbytes == (size_t) -1 || - ((MyFlags & (MY_FNABP | MY_NABP)) && !(MyFlags & MY_FULL_IO))) - DBUG_RETURN(MY_FILE_ERROR); /* Return with error */ - if (readbytes != (size_t) -1 && (MyFlags & MY_FULL_IO)) - { - Buffer+= readbytes; - Count-= readbytes; - continue; - } - } - - if (MyFlags & (MY_NABP | MY_FNABP)) - readbytes= 0; /* Ok on read */ - else if (MyFlags & MY_FULL_IO) - readbytes= save_count; - break; - } - DBUG_RETURN(readbytes); -} /* my_read */ |