summaryrefslogtreecommitdiff
path: root/mysql/mysys/my_chsize.c
diff options
context:
space:
mode:
Diffstat (limited to 'mysql/mysys/my_chsize.c')
-rw-r--r--mysql/mysys/my_chsize.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/mysql/mysys/my_chsize.c b/mysql/mysys/my_chsize.c
deleted file mode 100644
index ca388dc..0000000
--- a/mysql/mysys/my_chsize.c
+++ /dev/null
@@ -1,106 +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 "m_string.h"
-#include "my_thread_local.h"
-
-/*
- Change size of file.
-
- SYNOPSIS
- my_chsize()
- fd File descriptor
- new_length New file size
- filler If we don't have truncate, fill up all bytes after
- new_length with this character
- MyFlags Flags
-
- DESCRIPTION
- my_chsize() truncates file if shorter else fill with the filler character.
- The function also changes the file pointer. Usually it points to the end
- of the file after execution.
-
- RETURN VALUE
- 0 Ok
- 1 Error
-*/
-int my_chsize(File fd, my_off_t newlength, int filler, myf MyFlags)
-{
- my_off_t oldsize;
- uchar buff[IO_SIZE];
- DBUG_ENTER("my_chsize");
- DBUG_PRINT("my",("fd: %d length: %lu MyFlags: %d",fd,(ulong) newlength,
- MyFlags));
-
- if ((oldsize= my_seek(fd, 0L, MY_SEEK_END, MYF(MY_WME+MY_FAE))) == newlength)
- DBUG_RETURN(0);
-
- DBUG_PRINT("info",("old_size: %ld", (ulong) oldsize));
-
- if (oldsize > newlength)
- {
-#ifdef _WIN32
- if (my_win_chsize(fd, newlength))
- {
- set_my_errno(errno);
- goto err;
- }
- DBUG_RETURN(0);
-#elif defined(HAVE_FTRUNCATE)
- if (ftruncate(fd, (off_t) newlength))
- {
- set_my_errno(errno);
- goto err;
- }
- DBUG_RETURN(0);
-#else
- /*
- Fill space between requested length and true length with 'filler'
- We should never come here on any modern machine
- */
- if (my_seek(fd, newlength, MY_SEEK_SET, MYF(MY_WME+MY_FAE))
- == MY_FILEPOS_ERROR)
- {
- goto err;
- }
- swap_variables(my_off_t, newlength, oldsize);
-#endif
- }
-
- /* Full file with 'filler' until it's as big as requested */
- memset(buff, filler, IO_SIZE);
- while (newlength-oldsize > IO_SIZE)
- {
- if (my_write(fd, buff, IO_SIZE, MYF(MY_NABP)))
- goto err;
- oldsize+= IO_SIZE;
- }
- if (my_write(fd,buff,(size_t) (newlength-oldsize), MYF(MY_NABP)))
- goto err;
- DBUG_RETURN(0);
-
-err:
- DBUG_PRINT("error", ("errno: %d", errno));
- if (MyFlags & MY_WME)
- {
- char errbuf[MYSYS_STRERROR_SIZE];
- my_error(EE_CANT_CHSIZE, MYF(0),
- my_errno(), my_strerror(errbuf, sizeof(errbuf), my_errno()));
- }
- DBUG_RETURN(1);
-} /* my_chsize */