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Diffstat (limited to 'deps/mysqllite/mysys/my_fopen.c')
-rw-r--r--deps/mysqllite/mysys/my_fopen.c358
1 files changed, 0 insertions, 358 deletions
diff --git a/deps/mysqllite/mysys/my_fopen.c b/deps/mysqllite/mysys/my_fopen.c
deleted file mode 100644
index e184c8308f..0000000000
--- a/deps/mysqllite/mysys/my_fopen.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/* Copyright (C) 2000 MySQL AB, 2008-2009 Sun Microsystems, Inc
-
- 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 "my_static.h"
-#include <errno.h>
-#include "mysys_err.h"
-
-#if defined(__FreeBSD__)
-extern int getosreldate(void);
-#endif
-
-static void make_ftype(char * to,int flag);
-
-/*
- Open a file as stream
-
- SYNOPSIS
- my_fopen()
- FileName Path-name of file
- Flags Read | write | append | trunc (like for open())
- MyFlags Flags for handling errors
-
- RETURN
- 0 Error
- # File handler
-*/
-
-FILE *my_fopen(const char *filename, int flags, myf MyFlags)
-{
- FILE *fd;
- char type[5];
- DBUG_ENTER("my_fopen");
- DBUG_PRINT("my",("Name: '%s' flags: %d MyFlags: %d",
- filename, flags, MyFlags));
-
- make_ftype(type,flags);
-
-#ifdef _WIN32
- fd= my_win_fopen(filename, type);
-#else
- fd= fopen(filename, type);
-#endif
- if (fd != 0)
- {
- /*
- The test works if MY_NFILE < 128. The problem is that fileno() is char
- on some OS (SUNOS). Actually the filename save isn't that important
- so we can ignore if this doesn't work.
- */
-
- int filedesc= my_fileno(fd);
- if ((uint)filedesc >= my_file_limit)
- {
- thread_safe_increment(my_stream_opened,&THR_LOCK_open);
- DBUG_RETURN(fd); /* safeguard */
- }
- mysql_mutex_lock(&THR_LOCK_open);
- if ((my_file_info[filedesc].name= (char*)
- my_strdup(filename,MyFlags)))
- {
- my_stream_opened++;
- my_file_total_opened++;
- my_file_info[filedesc].type= STREAM_BY_FOPEN;
- mysql_mutex_unlock(&THR_LOCK_open);
- DBUG_PRINT("exit",("stream: 0x%lx", (long) fd));
- DBUG_RETURN(fd);
- }
- mysql_mutex_unlock(&THR_LOCK_open);
- (void) my_fclose(fd,MyFlags);
- my_errno=ENOMEM;
- }
- else
- my_errno=errno;
- DBUG_PRINT("error",("Got error %d on open",my_errno));
- if (MyFlags & (MY_FFNF | MY_FAE | MY_WME))
- my_error((flags & O_RDONLY) || (flags == O_RDONLY ) ? EE_FILENOTFOUND :
- EE_CANTCREATEFILE,
- MYF(ME_BELL+ME_WAITTANG), filename, my_errno);
- DBUG_RETURN((FILE*) 0);
-} /* my_fopen */
-
-
-#if defined(_WIN32)
-
-static FILE *my_win_freopen(const char *path, const char *mode, FILE *stream)
-{
- int handle_fd, fd= _fileno(stream);
- HANDLE osfh;
-
- DBUG_ASSERT(path && stream);
-
- /* Services don't have stdout/stderr on Windows, so _fileno returns -1. */
- if (fd < 0)
- {
- if (!freopen(path, mode, stream))
- return NULL;
-
- fd= _fileno(stream);
- }
-
- if ((osfh= CreateFile(path, GENERIC_READ | GENERIC_WRITE,
- FILE_SHARE_READ | FILE_SHARE_WRITE |
- FILE_SHARE_DELETE, NULL,
- OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL,
- NULL)) == INVALID_HANDLE_VALUE)
- return NULL;
-
- if ((handle_fd= _open_osfhandle((intptr_t)osfh,
- _O_APPEND | _O_TEXT)) == -1)
- {
- CloseHandle(osfh);
- return NULL;
- }
-
- if (_dup2(handle_fd, fd) < 0)
- {
- CloseHandle(osfh);
- return NULL;
- }
-
- _close(handle_fd);
-
- return stream;
-}
-
-#elif defined(__FreeBSD__)
-
-/* No close operation hook. */
-
-static int no_close(void *cookie __attribute__((unused)))
-{
- return 0;
-}
-
-/*
- A hack around a race condition in the implementation of freopen.
-
- The race condition steams from the fact that the current fd of
- the stream is closed before its number is used to duplicate the
- new file descriptor. This defeats the desired atomicity of the
- close and duplicate of dup2().
-
- See PR number 79887 for reference:
- http://www.freebsd.org/cgi/query-pr.cgi?pr=79887
-*/
-
-static FILE *my_freebsd_freopen(const char *path, const char *mode, FILE *stream)
-{
- int old_fd;
- FILE *result;
-
- flockfile(stream);
-
- old_fd= fileno(stream);
-
- /* Use a no operation close hook to avoid having the fd closed. */
- stream->_close= no_close;
-
- /* Relies on the implicit dup2 to close old_fd. */
- result= freopen(path, mode, stream);
-
- /* If successful, the _close hook was replaced. */
-
- if (result == NULL)
- close(old_fd);
- else
- funlockfile(result);
-
- return result;
-}
-
-#endif
-
-
-/**
- Change the file associated with a file stream.
-
- @param path Path to file.
- @param mode Mode of the stream.
- @param stream File stream.
-
- @note
- This function is used to redirect stdout and stderr to a file and
- subsequently to close and reopen that file for log rotation.
-
- @retval A FILE pointer on success. Otherwise, NULL.
-*/
-
-FILE *my_freopen(const char *path, const char *mode, FILE *stream)
-{
- FILE *result;
-
-#if defined(_WIN32)
- result= my_win_freopen(path, mode, stream);
-#elif defined(__FreeBSD__)
- /*
- XXX: Once the fix is ported to the stable releases, this should
- be dependent upon the specific FreeBSD versions. Check at:
- http://www.freebsd.org/cgi/query-pr.cgi?pr=79887
- */
- if (getosreldate() > 900027)
- result= freopen(path, mode, stream);
- else
- result= my_freebsd_freopen(path, mode, stream);
-#else
- result= freopen(path, mode, stream);
-#endif
-
- return result;
-}
-
-
-/* Close a stream */
-int my_fclose(FILE *fd, myf MyFlags)
-{
- int err,file;
- DBUG_ENTER("my_fclose");
- DBUG_PRINT("my",("stream: 0x%lx MyFlags: %d", (long) fd, MyFlags));
-
- mysql_mutex_lock(&THR_LOCK_open);
- file= my_fileno(fd);
-#ifndef _WIN32
- err= fclose(fd);
-#else
- err= my_win_fclose(fd);
-#endif
- if(err < 0)
- {
- my_errno=errno;
- if (MyFlags & (MY_FAE | MY_WME))
- my_error(EE_BADCLOSE, MYF(ME_BELL+ME_WAITTANG),
- my_filename(file),errno);
- }
- else
- my_stream_opened--;
- if ((uint) file < my_file_limit && my_file_info[file].type != UNOPEN)
- {
- my_file_info[file].type = UNOPEN;
- my_free(my_file_info[file].name);
- }
- mysql_mutex_unlock(&THR_LOCK_open);
- DBUG_RETURN(err);
-} /* my_fclose */
-
-
- /* Make a stream out of a file handle */
- /* Name may be 0 */
-
-FILE *my_fdopen(File Filedes, const char *name, int Flags, myf MyFlags)
-{
- FILE *fd;
- char type[5];
- DBUG_ENTER("my_fdopen");
- DBUG_PRINT("my",("Fd: %d Flags: %d MyFlags: %d",
- Filedes, Flags, MyFlags));
-
- make_ftype(type,Flags);
-#ifdef _WIN32
- fd= my_win_fdopen(Filedes, type);
-#else
- fd= fdopen(Filedes, type);
-#endif
- if (!fd)
- {
- my_errno=errno;
- if (MyFlags & (MY_FAE | MY_WME))
- my_error(EE_CANT_OPEN_STREAM, MYF(ME_BELL+ME_WAITTANG),errno);
- }
- else
- {
- mysql_mutex_lock(&THR_LOCK_open);
- my_stream_opened++;
- if ((uint) Filedes < (uint) my_file_limit)
- {
- if (my_file_info[Filedes].type != UNOPEN)
- {
- my_file_opened--; /* File is opened with my_open ! */
- }
- else
- {
- my_file_info[Filedes].name= my_strdup(name,MyFlags);
- }
- my_file_info[Filedes].type = STREAM_BY_FDOPEN;
- }
- mysql_mutex_unlock(&THR_LOCK_open);
- }
-
- DBUG_PRINT("exit",("stream: 0x%lx", (long) fd));
- DBUG_RETURN(fd);
-} /* my_fdopen */
-
-
-/*
- Make a fopen() typestring from a open() type bitmap
-
- SYNOPSIS
- make_ftype()
- to String for fopen() is stored here
- flag Flag used by open()
-
- IMPLEMENTATION
- This routine attempts to find the best possible match
- between a numeric option and a string option that could be
- fed to fopen. There is not a 1 to 1 mapping between the two.
-
- NOTE
- On Unix, O_RDONLY is usually 0
-
- MAPPING
- r == O_RDONLY
- w == O_WRONLY|O_TRUNC|O_CREAT
- a == O_WRONLY|O_APPEND|O_CREAT
- r+ == O_RDWR
- w+ == O_RDWR|O_TRUNC|O_CREAT
- a+ == O_RDWR|O_APPEND|O_CREAT
-*/
-
-static void make_ftype(register char * to, register int flag)
-{
- /* check some possible invalid combinations */
- DBUG_ASSERT((flag & (O_TRUNC | O_APPEND)) != (O_TRUNC | O_APPEND));
- DBUG_ASSERT((flag & (O_WRONLY | O_RDWR)) != (O_WRONLY | O_RDWR));
-
- if ((flag & (O_RDONLY|O_WRONLY)) == O_WRONLY)
- *to++= (flag & O_APPEND) ? 'a' : 'w';
- else if (flag & O_RDWR)
- {
- /* Add '+' after theese */
- if (flag & (O_TRUNC | O_CREAT))
- *to++= 'w';
- else if (flag & O_APPEND)
- *to++= 'a';
- else
- *to++= 'r';
- *to++= '+';
- }
- else
- *to++= 'r';
-
-#if FILE_BINARY /* If we have binary-files */
- if (flag & FILE_BINARY)
- *to++='b';
-#endif
- *to='\0';
-} /* make_ftype */