mirror of
https://github.com/VCMP-SqMod/SqMod.git
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91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02111-1301, USA */
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#include "mysys_priv.h"
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#include "mysys_err.h"
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#include <errno.h>
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/* Write a chunk of bytes to a file */
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uint my_write(int Filedes, const unsigned char *Buffer, uint Count, myf MyFlags)
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{
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uint writenbytes,errors;
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ulong written;
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DBUG_ENTER("my_write");
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DBUG_PRINT("my",("Fd: %d Buffer: %lx Count: %d MyFlags: %d",
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Filedes, Buffer, Count, MyFlags));
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errors=0; written=0L;
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for (;;)
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{
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if ((writenbytes = (uint) write(Filedes, Buffer, Count)) == Count)
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break;
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if ((int) writenbytes != -1)
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{ /* Safeguard */
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written+=writenbytes;
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Buffer+=writenbytes;
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Count-=writenbytes;
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}
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my_errno=errno;
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DBUG_PRINT("error",("Write only %d bytes, error: %d",
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writenbytes,my_errno));
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#ifndef NO_BACKGROUND
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#ifdef THREAD
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if (my_thread_var->abort)
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MyFlags&= ~ MY_WAIT_IF_FULL; /* End if aborted by user */
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#endif
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if (my_errno == ENOSPC && (MyFlags & MY_WAIT_IF_FULL) &&
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(uint) writenbytes != (uint) -1)
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{
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if (!(errors++ % MY_WAIT_GIVE_USER_A_MESSAGE))
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my_error(EE_DISK_FULL,MYF(ME_BELL | ME_NOREFRESH),
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my_filename(Filedes));
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VOID(sleep(MY_WAIT_FOR_USER_TO_FIX_PANIC));
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continue;
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}
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if (!writenbytes)
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{
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/* We may come here on an interrupt or if the file quote is exeeded */
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if (my_errno == EINTR)
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continue;
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if (!errors++) /* Retry once */
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{
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errno=EFBIG; /* Assume this is the error */
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continue;
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}
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}
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else if ((uint) writenbytes != (uint) -1)
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continue; /* Retry */
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#endif
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if (MyFlags & (MY_NABP | MY_FNABP))
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{
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if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))
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{
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my_error(EE_WRITE, MYF(ME_BELL+ME_WAITTANG),
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my_filename(Filedes),my_errno);
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}
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DBUG_RETURN(MY_FILE_ERROR); /* Error on read */
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}
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else
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break; /* Return bytes written */
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}
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if (MyFlags & (MY_NABP | MY_FNABP))
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DBUG_RETURN(0); /* Want only errors */
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DBUG_RETURN(writenbytes+written);
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} /* my_write */
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