diff options
Diffstat (limited to 'osdep/mmap-os2.c')
| -rw-r--r-- | osdep/mmap-os2.c | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/osdep/mmap-os2.c b/osdep/mmap-os2.c deleted file mode 100644 index 61fcc4f5db..0000000000 --- a/osdep/mmap-os2.c +++ /dev/null @@ -1,211 +0,0 @@ -/* - * very simple implementation of mmap() for OS/2 - * - * Copyright (c) 2008 KO Myung-Hun (komh@chollian.net) - * - * This file is part of MPlayer. - * - * MPlayer 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; either version 2 of the License, or - * (at your option) any later version. - * - * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#define INCL_DOS -#include <os2.h> - -#include <stdio.h> -#include <stdlib.h> -#include <io.h> -#include <unistd.h> -#include <sys/types.h> - -#include "config.h" -#include "mmap.h" -#include "mmap_anon.h" - -typedef struct os2_mmap_s -{ - void *addr; - size_t len; - int flags; - struct os2_mmap_s *prev; - struct os2_mmap_s *next; -} os2_mmap; -static os2_mmap *m_mmap = NULL; - -void *mmap( void *addr, size_t len, int prot, int flags, int fildes, off_t off ) -{ - os2_mmap *new_mmap; - - ULONG fl; - ULONG rc; - - void *ret; - - if( prot & PROT_WRITE ) - { - if( flags & MAP_SHARED ) - return MAP_FAILED; - - if( !( flags & MAP_PRIVATE )) - return MAP_FAILED; - } - - if( flags & MAP_FIXED ) - { - ULONG cb; - - cb = len; - rc = DosQueryMem( addr, &cb, &fl ); - if( rc || ( cb < len )) - return MAP_FAILED; - - rc = DosSetMem( addr, len, fPERM ); - if( rc ) - return MAP_FAILED; - - ret = addr; - } - else - { - // Allocate tiled memory compatible with 16-bit selectors - // 'fs_seg' in 'ldt_keeper.c' need this attribute - rc = DosAllocMem( &ret, len, fALLOC ); - if( rc ) - return MAP_FAILED; - } - - new_mmap = malloc( sizeof( os2_mmap )); - new_mmap->addr = ret; - new_mmap->len = len; - new_mmap->flags = flags; - new_mmap->prev = m_mmap; - new_mmap->next = NULL; - - if( m_mmap ) - m_mmap->next = new_mmap; - m_mmap = new_mmap; - - if( !( flags & MAP_ANON )) - { - int pos; - - /* Now read in the file */ - if(( pos = lseek( fildes, off, SEEK_SET )) == -1) - { - munmap( ret, len ); - - return MAP_FAILED; - } - - read( fildes, ret, len ); - lseek( fildes, pos, SEEK_SET ); /* Restore the file pointer */ - } - - fl = 0; - - if( prot & PROT_READ ) - fl |= PAG_READ; - - if( prot & PROT_WRITE ) - fl |= PAG_WRITE; - - if( prot & PROT_EXEC ) - fl |= PAG_EXECUTE; - - if( prot & PROT_NONE ) - fl |= PAG_GUARD; - - rc = DosSetMem( ret, len, fl ); - if( rc ) - { - munmap( ret, len ); - - return MAP_FAILED; - } - - return ret; -} - -int munmap( void *addr, size_t len ) -{ - os2_mmap *mm; - - for( mm = m_mmap; mm; mm = mm->prev ) - { - if( mm->addr == addr ) - break; - } - - if( mm ) - { - - if( !( mm->flags & MAP_FIXED )) - DosFreeMem( addr ); - - if( mm->next ) - mm->next->prev = mm->prev; - - if( mm->prev ) - mm->prev->next = mm->next; - - if( m_mmap == mm ) - m_mmap = mm->prev; - - free( mm ); - - return 0; - } - - return -1; -} - -int mprotect( void *addr, size_t len, int prot ) -{ - os2_mmap *mm; - - for( mm = m_mmap; mm; mm = mm->prev ) - { - if( mm->addr == addr ) - break; - } - - if( mm ) - { - ULONG fl; - - fl = 0; - - if( prot & PROT_READ ) - fl |= PAG_READ; - - if( prot & PROT_WRITE ) - fl |= PAG_WRITE; - - if( prot & PROT_EXEC ) - fl |= PAG_EXECUTE; - - if( prot & PROT_NONE ) - fl |= PAG_GUARD; - - if( DosSetMem( addr, len, fl ) == 0 ) - return 0; - } - - return -1; -} - -void *mmap_anon( void *addr, size_t len, int prot, int flags, off_t off ) -{ - return mmap( addr, len, prot, flags | MAP_ANON, -1, off ); -} |