diff options
Diffstat (limited to 'externals/mysql/mysys/my_fopen.c')
| -rw-r--r-- | externals/mysql/mysys/my_fopen.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/externals/mysql/mysys/my_fopen.c b/externals/mysql/mysys/my_fopen.c deleted file mode 100644 index ef8a385dcfe..00000000000 --- a/externals/mysql/mysys/my_fopen.c +++ /dev/null @@ -1,226 +0,0 @@ -/* Copyright (C) 2000 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 "my_static.h" -#include <errno.h> -#include "mysys_err.h" - -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 */ - } - pthread_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; - pthread_mutex_unlock(&THR_LOCK_open); - DBUG_PRINT("exit",("stream: %p", fd)); - DBUG_RETURN(fd); - } - pthread_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 */ - - - /* Close a stream */ - -/* Close a stream */ -int my_fclose(FILE *fd, myf MyFlags) -{ - int err,file; - DBUG_ENTER("my_fclose"); - DBUG_PRINT("my",("stream: %p MyFlags: %d", fd, MyFlags)); - - pthread_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, MYF(MY_ALLOW_ZERO_PTR)); - } - pthread_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 - { - pthread_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; - } - pthread_mutex_unlock(&THR_LOCK_open); - } - - DBUG_PRINT("exit",("stream: %p", 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 */ |