/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is the Netscape Portable Runtime (NSPR). * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998-2000 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #ifndef prunixos_h___ #define prunixos_h___ /* * If FD_SETSIZE is not defined on the command line, set the default value * before include select.h */ /* * Linux: FD_SETSIZE is defined in /usr/include/sys/select.h and should * not be redefined. */ #if !defined(LINUX) && !defined(DARWIN) && !defined(NEXTSTEP) #ifndef FD_SETSIZE #define FD_SETSIZE 4096 #endif #endif #include #include #include #include #include #include "prio.h" #include "prmem.h" #include "prclist.h" /* * For select(), fd_set, and struct timeval. * * In The Single UNIX(R) Specification, Version 2, * the header file for select() is . * * fd_set is defined in . Usually * includes , but on some * older systems does not include * , so we include it explicitly. */ #include #include #if defined(AIX) /* Only pre-4.2 AIX needs it, but for simplicity... */ #include #endif #define _PR_HAVE_O_APPEND #define PR_DIRECTORY_SEPARATOR '/' #define PR_DIRECTORY_SEPARATOR_STR "/" #define PR_PATH_SEPARATOR ':' #define PR_PATH_SEPARATOR_STR ":" #define GCPTR typedef int (*FARPROC)(); /* * intervals at which GLOBAL threads wakeup to check for pending interrupt */ #define _PR_INTERRUPT_CHECK_INTERVAL_SECS 5 extern PRIntervalTime intr_timeout_ticks; /* * The bit flags for the in_flags and out_flags fields * of _PR_UnixPollDesc */ #ifdef _PR_USE_POLL #define _PR_UNIX_POLL_READ POLLIN #define _PR_UNIX_POLL_WRITE POLLOUT #define _PR_UNIX_POLL_EXCEPT POLLPRI #define _PR_UNIX_POLL_ERR POLLERR #define _PR_UNIX_POLL_NVAL POLLNVAL #define _PR_UNIX_POLL_HUP POLLHUP #else /* _PR_USE_POLL */ #define _PR_UNIX_POLL_READ 0x1 #define _PR_UNIX_POLL_WRITE 0x2 #define _PR_UNIX_POLL_EXCEPT 0x4 #define _PR_UNIX_POLL_ERR 0x8 #define _PR_UNIX_POLL_NVAL 0x10 #define _PR_UNIX_POLL_HUP 0x20 #endif /* _PR_USE_POLL */ typedef struct _PRUnixPollDesc { PRInt32 osfd; PRInt16 in_flags; PRInt16 out_flags; } _PRUnixPollDesc; typedef struct PRPollQueue { PRCList links; /* for linking PRPollQueue's together */ _PRUnixPollDesc *pds; /* array of poll descriptors */ PRUintn npds; /* length of the array */ PRPackedBool on_ioq; /* is this on the async i/o work q? */ PRIntervalTime timeout; /* timeout, in ticks */ struct PRThread *thr; } PRPollQueue; #define _PR_POLLQUEUE_PTR(_qp) \ ((PRPollQueue*) ((char*) (_qp) - offsetof(PRPollQueue,links))) extern PRInt32 _PR_WaitForMultipleFDs( _PRUnixPollDesc *unixpds, PRInt32 pdcnt, PRIntervalTime timeout); extern void _PR_Unblock_IO_Wait(struct PRThread *thr); #if defined(_PR_LOCAL_THREADS_ONLY) || defined(_PR_GLOBAL_THREADS_ONLY) #define _MD_CHECK_FOR_EXIT() #endif extern fd_set _pr_md_read_set, _pr_md_write_set, _pr_md_exception_set; extern PRInt16 _pr_md_read_cnt[], _pr_md_write_cnt[], _pr_md_exception_cnt[]; extern PRInt32 _pr_md_ioq_max_osfd; extern PRUint32 _pr_md_ioq_timeout; struct _MDFileDesc { int osfd; #if defined(LINUX) && defined(_PR_PTHREADS) int tcp_nodelay; /* used by pt_LinuxSendFile */ #endif }; struct _MDDir { DIR *d; }; struct _PRCPU; extern void _MD_unix_init_running_cpu(struct _PRCPU *cpu); /* ** Make a redzone at both ends of the stack segment. Disallow access ** to those pages of memory. It's ok if the mprotect call's don't ** work - it just means that we don't really have a functional ** redzone. */ #include #ifndef PROT_NONE #define PROT_NONE 0x0 #endif #if defined(DEBUG) && !defined(DARWIN) && !defined(NEXTSTEP) #if !defined(SOLARIS) #include /* for memset() */ #define _MD_INIT_STACK(ts,REDZONE) \ PR_BEGIN_MACRO \ (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE); \ (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\ REDZONE, PROT_NONE); \ /* \ ** Fill stack memory with something that turns into an illegal \ ** pointer value. This will sometimes find runtime references to \ ** uninitialized pointers. We don't do this for solaris because we \ ** can use purify instead. \ */ \ if (_pr_debugStacks) { \ memset(ts->allocBase + REDZONE, 0xf7, ts->stackSize); \ } \ PR_END_MACRO #else /* !SOLARIS */ #define _MD_INIT_STACK(ts,REDZONE) \ PR_BEGIN_MACRO \ (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE); \ (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\ REDZONE, PROT_NONE); \ PR_END_MACRO #endif /* !SOLARIS */ /* * _MD_CLEAR_STACK * Allow access to the redzone pages; the access was turned off in * _MD_INIT_STACK. */ #define _MD_CLEAR_STACK(ts) \ PR_BEGIN_MACRO \ (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_READ|PROT_WRITE);\ (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\ REDZONE, PROT_READ|PROT_WRITE); \ PR_END_MACRO #else /* DEBUG */ #define _MD_INIT_STACK(ts,REDZONE) #define _MD_CLEAR_STACK(ts) #endif /* DEBUG */ #if !defined(SOLARIS) #define PR_SET_INTSOFF(newval) #endif /************************************************************************/ extern void _PR_UnixInit(void); /************************************************************************/ struct _MDProcess { pid_t pid; }; struct PRProcess; struct PRProcessAttr; /* Create a new process (fork() + exec()) */ #define _MD_CREATE_PROCESS _MD_CreateUnixProcess extern struct PRProcess * _MD_CreateUnixProcess( const char *path, char *const *argv, char *const *envp, const struct PRProcessAttr *attr ); #define _MD_DETACH_PROCESS _MD_DetachUnixProcess extern PRStatus _MD_DetachUnixProcess(struct PRProcess *process); /* Wait for a child process to terminate */ #define _MD_WAIT_PROCESS _MD_WaitUnixProcess extern PRStatus _MD_WaitUnixProcess(struct PRProcess *process, PRInt32 *exitCode); #define _MD_KILL_PROCESS _MD_KillUnixProcess extern PRStatus _MD_KillUnixProcess(struct PRProcess *process); /************************************************************************/ extern void _MD_EnableClockInterrupts(void); extern void _MD_DisableClockInterrupts(void); #define _MD_START_INTERRUPTS _MD_StartInterrupts #define _MD_STOP_INTERRUPTS _MD_StopInterrupts #define _MD_DISABLE_CLOCK_INTERRUPTS _MD_DisableClockInterrupts #define _MD_ENABLE_CLOCK_INTERRUPTS _MD_EnableClockInterrupts #define _MD_BLOCK_CLOCK_INTERRUPTS _MD_BlockClockInterrupts #define _MD_UNBLOCK_CLOCK_INTERRUPTS _MD_UnblockClockInterrupts /************************************************************************/ extern void _MD_InitCPUS(void); #define _MD_INIT_CPUS _MD_InitCPUS extern void _MD_Wakeup_CPUs(void); #define _MD_WAKEUP_CPUS _MD_Wakeup_CPUs #define _MD_PAUSE_CPU _MD_PauseCPU #if defined(_PR_LOCAL_THREADS_ONLY) || defined(_PR_GLOBAL_THREADS_ONLY) #define _MD_CLEANUP_BEFORE_EXIT() #endif #ifndef IRIX #define _MD_EXIT(status) _exit(status) #endif /************************************************************************/ #define _MD_GET_ENV getenv #define _MD_PUT_ENV putenv /************************************************************************/ #define _MD_INIT_FILEDESC(fd) extern void _MD_MakeNonblock(PRFileDesc *fd); #define _MD_MAKE_NONBLOCK _MD_MakeNonblock /************************************************************************/ #if !defined(_PR_PTHREADS) extern void _MD_InitSegs(void); extern PRStatus _MD_AllocSegment(PRSegment *seg, PRUint32 size, void *vaddr); extern void _MD_FreeSegment(PRSegment *seg); #define _MD_INIT_SEGS _MD_InitSegs #define _MD_ALLOC_SEGMENT _MD_AllocSegment #define _MD_FREE_SEGMENT _MD_FreeSegment #endif /* !defined(_PR_PTHREADS) */ /************************************************************************/ #if !defined(HPUX_LW_TIMER) #define _MD_INTERVAL_INIT() #endif #define _MD_INTERVAL_PER_MILLISEC() (_PR_MD_INTERVAL_PER_SEC() / 1000) #define _MD_INTERVAL_PER_MICROSEC() (_PR_MD_INTERVAL_PER_SEC() / 1000000) /************************************************************************/ #define _MD_ERRNO() (errno) #define _MD_GET_SOCKET_ERROR() (errno) /************************************************************************/ extern PRInt32 _MD_AvailableSocket(PRInt32 osfd); extern void _MD_StartInterrupts(void); extern void _MD_StopInterrupts(void); extern void _MD_DisableClockInterrupts(void); extern void _MD_BlockClockInterrupts(void); extern void _MD_UnblockClockInterrupts(void); extern void _MD_PauseCPU(PRIntervalTime timeout); extern PRStatus _MD_open_dir(struct _MDDir *, const char *); extern PRInt32 _MD_close_dir(struct _MDDir *); extern char * _MD_read_dir(struct _MDDir *, PRIntn); extern PRInt32 _MD_open(const char *name, PRIntn osflags, PRIntn mode); extern PRInt32 _MD_delete(const char *name); extern PRInt32 _MD_getfileinfo(const char *fn, PRFileInfo *info); extern PRInt32 _MD_getfileinfo64(const char *fn, PRFileInfo64 *info); extern PRInt32 _MD_getopenfileinfo(const PRFileDesc *fd, PRFileInfo *info); extern PRInt32 _MD_getopenfileinfo64(const PRFileDesc *fd, PRFileInfo64 *info); extern PRInt32 _MD_rename(const char *from, const char *to); extern PRInt32 _MD_access(const char *name, PRAccessHow how); extern PRInt32 _MD_mkdir(const char *name, PRIntn mode); extern PRInt32 _MD_rmdir(const char *name); extern PRInt32 _MD_accept_read(PRInt32 sock, PRInt32 *newSock, PRNetAddr **raddr, void *buf, PRInt32 amount); extern PRInt32 _PR_UnixSendFile(PRFileDesc *sd, PRSendFileData *sfd, PRTransmitFileFlags flags, PRIntervalTime timeout); extern PRStatus _MD_LockFile(PRInt32 osfd); extern PRStatus _MD_TLockFile(PRInt32 osfd); extern PRStatus _MD_UnlockFile(PRInt32 osfd); #define _MD_OPEN_DIR(dir, name) _MD_open_dir(dir, name) #define _MD_CLOSE_DIR(dir) _MD_close_dir(dir) #define _MD_READ_DIR(dir, flags) _MD_read_dir(dir, flags) #define _MD_OPEN(name, osflags, mode) _MD_open(name, osflags, mode) #define _MD_OPEN_FILE(name, osflags, mode) _MD_open(name, osflags, mode) extern PRInt32 _MD_read(PRFileDesc *fd, void *buf, PRInt32 amount); #define _MD_READ(fd,buf,amount) _MD_read(fd,buf,amount) extern PRInt32 _MD_write(PRFileDesc *fd, const void *buf, PRInt32 amount); #define _MD_WRITE(fd,buf,amount) _MD_write(fd,buf,amount) #define _MD_DELETE(name) _MD_delete(name) #define _MD_GETFILEINFO(fn, info) _MD_getfileinfo(fn, info) #define _MD_GETFILEINFO64(fn, info) _MD_getfileinfo64(fn, info) #define _MD_GETOPENFILEINFO(fd, info) _MD_getopenfileinfo(fd, info) #define _MD_GETOPENFILEINFO64(fd, info) _MD_getopenfileinfo64(fd, info) #define _MD_RENAME(from, to) _MD_rename(from, to) #define _MD_ACCESS(name, how) _MD_access(name, how) #define _MD_MKDIR(name, mode) _MD_mkdir(name, mode) #define _MD_MAKE_DIR(name, mode) _MD_mkdir(name, mode) #define _MD_RMDIR(name) _MD_rmdir(name) #define _MD_ACCEPT_READ(sock, newSock, raddr, buf, amount) _MD_accept_read(sock, newSock, raddr, buf, amount) #define _MD_LOCKFILE _MD_LockFile #define _MD_TLOCKFILE _MD_TLockFile #define _MD_UNLOCKFILE _MD_UnlockFile extern PRInt32 _MD_socket(int af, int type, int flags); #define _MD_SOCKET _MD_socket extern PRInt32 _MD_connect(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout); #define _MD_CONNECT _MD_connect extern PRInt32 _MD_accept(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout); #define _MD_ACCEPT _MD_accept extern PRInt32 _MD_bind(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen); #define _MD_BIND _MD_bind extern PRInt32 _MD_listen(PRFileDesc *fd, PRIntn backlog); #define _MD_LISTEN _MD_listen extern PRInt32 _MD_shutdown(PRFileDesc *fd, PRIntn how); #define _MD_SHUTDOWN _MD_shutdown extern PRInt32 _MD_recv(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, PRIntervalTime timeout); #define _MD_RECV _MD_recv extern PRInt32 _MD_send(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, PRIntervalTime timeout); #define _MD_SEND _MD_send extern PRInt32 _MD_recvfrom(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout); #define _MD_RECVFROM _MD_recvfrom extern PRInt32 _MD_sendto(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout); #define _MD_SENDTO _MD_sendto extern PRInt32 _MD_writev(PRFileDesc *fd, const struct PRIOVec *iov, PRInt32 iov_size, PRIntervalTime timeout); #define _MD_WRITEV _MD_writev extern PRInt32 _MD_socketavailable(PRFileDesc *fd); #define _MD_SOCKETAVAILABLE _MD_socketavailable extern PRInt64 _MD_socketavailable64(PRFileDesc *fd); #define _MD_SOCKETAVAILABLE64 _MD_socketavailable64 #define _MD_PIPEAVAILABLE _MD_socketavailable extern PRInt32 _MD_pr_poll(PRPollDesc *pds, PRIntn npds, PRIntervalTime timeout); #define _MD_PR_POLL _MD_pr_poll extern PRInt32 _MD_close(PRInt32 osfd); #define _MD_CLOSE_FILE _MD_close extern PRInt32 _MD_lseek(PRFileDesc*, PRInt32, PRSeekWhence); #define _MD_LSEEK _MD_lseek extern PRInt64 _MD_lseek64(PRFileDesc*, PRInt64, PRSeekWhence); #define _MD_LSEEK64 _MD_lseek64 extern PRInt32 _MD_fsync(PRFileDesc *fd); #define _MD_FSYNC _MD_fsync extern PRInt32 _MD_socketpair(int af, int type, int flags, PRInt32 *osfd); #define _MD_SOCKETPAIR _MD_socketpair #define _MD_CLOSE_SOCKET _MD_close #ifndef NO_NSPR_10_SUPPORT #define _MD_STAT stat #endif extern PRStatus _MD_getpeername(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen); #define _MD_GETPEERNAME _MD_getpeername extern PRStatus _MD_getsockname(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen); #define _MD_GETSOCKNAME _MD_getsockname extern PRStatus _MD_getsockopt(PRFileDesc *fd, PRInt32 level, PRInt32 optname, char* optval, PRInt32* optlen); #define _MD_GETSOCKOPT _MD_getsockopt extern PRStatus _MD_setsockopt(PRFileDesc *fd, PRInt32 level, PRInt32 optname, const char* optval, PRInt32 optlen); #define _MD_SETSOCKOPT _MD_setsockopt extern PRStatus _MD_set_fd_inheritable(PRFileDesc *fd, PRBool inheritable); #define _MD_SET_FD_INHERITABLE _MD_set_fd_inheritable extern void _MD_init_fd_inheritable(PRFileDesc *fd, PRBool imported); #define _MD_INIT_FD_INHERITABLE _MD_init_fd_inheritable extern void _MD_query_fd_inheritable(PRFileDesc *fd); #define _MD_QUERY_FD_INHERITABLE _MD_query_fd_inheritable extern PRStatus _MD_gethostname(char *name, PRUint32 namelen); #define _MD_GETHOSTNAME _MD_gethostname extern PRStatus _MD_getsysinfo(PRSysInfo cmd, char *name, PRUint32 namelen); #define _MD_GETSYSINFO _MD_getsysinfo extern int _MD_unix_get_nonblocking_connect_error(int osfd); /* Memory-mapped files */ struct _MDFileMap { PRIntn prot; PRIntn flags; PRBool isAnonFM; /* when true, PR_CloseFileMap() must close the related fd */ }; extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size); #define _MD_CREATE_FILE_MAP _MD_CreateFileMap #define _MD_GET_MEM_MAP_ALIGNMENT() PR_GetPageSize() extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset, PRUint32 len); #define _MD_MEM_MAP _MD_MemMap extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size); #define _MD_MEM_UNMAP _MD_MemUnmap extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap); #define _MD_CLOSE_FILE_MAP _MD_CloseFileMap /* * The standard (XPG4) gettimeofday() (from BSD) takes two arguments. * On some SVR4 derivatives, gettimeofday() takes only one argument. * The GETTIMEOFDAY macro is intended to hide this difference. */ #ifdef HAVE_SVID_GETTOD #define GETTIMEOFDAY(tp) gettimeofday(tp) #else #define GETTIMEOFDAY(tp) gettimeofday((tp), NULL) #endif #if defined(_PR_PTHREADS) && !defined(_PR_POLL_AVAILABLE) #define _PR_NEED_FAKE_POLL #endif #if defined(_PR_NEED_FAKE_POLL) /* * Some platforms don't have poll(), but our pthreads code calls poll(). * As a temporary measure, I implemented a fake poll() using select(). * Here are the struct and macro definitions copied from sys/poll.h * on Solaris 2.5. */ struct pollfd { int fd; short events; short revents; }; /* poll events */ #define POLLIN 0x0001 /* fd is readable */ #define POLLPRI 0x0002 /* high priority info at fd */ #define POLLOUT 0x0004 /* fd is writeable (won't block) */ #define POLLRDNORM 0x0040 /* normal data is readable */ #define POLLWRNORM POLLOUT #define POLLRDBAND 0x0080 /* out-of-band data is readable */ #define POLLWRBAND 0x0100 /* out-of-band data is writeable */ #define POLLNORM POLLRDNORM #define POLLERR 0x0008 /* fd has error condition */ #define POLLHUP 0x0010 /* fd has been hung up on */ #define POLLNVAL 0x0020 /* invalid pollfd entry */ extern int poll(struct pollfd *, unsigned long, int); #endif /* _PR_NEED_FAKE_POLL */ /* ** A vector of the UNIX I/O calls we use. These are here to smooth over ** the rough edges needed for large files. All of NSPR's implmentaions ** go through this vector using syntax of the form ** result = _md_iovector.xxx64(args); */ #if defined(SOLARIS2_5) /* ** Special case: Solaris 2.5.1 ** Solaris starts to have 64-bit file I/O in 2.6. We build on Solaris ** 2.5.1 so that we can use the same binaries on both Solaris 2.5.1 and ** 2.6. At run time, we detect whether 64-bit file I/O is available by ** looking up the 64-bit file function symbols in libc. At build time, ** we need to define the 64-bit file I/O datatypes that are compatible ** with their definitions on Solaris 2.6. */ typedef PRInt64 off64_t; typedef PRUint64 ino64_t; typedef PRInt64 blkcnt64_t; struct stat64 { dev_t st_dev; long st_pad1[3]; ino64_t st_ino; mode_t st_mode; nlink_t st_nlink; uid_t st_uid; gid_t st_gid; dev_t st_rdev; long t_pad2[2]; off64_t st_size; timestruc_t st_atim; timestruc_t st_mtim; timestruc_t st_ctim; long st_blksize; blkcnt64_t st_blocks; char st_fstype[_ST_FSTYPSZ]; long st_pad4[8]; }; typedef struct stat64 _MDStat64; typedef off64_t _MDOff64_t; #elif defined(_PR_HAVE_OFF64_T) typedef struct stat64 _MDStat64; typedef off64_t _MDOff64_t; #elif defined(_PR_HAVE_LARGE_OFF_T) typedef struct stat _MDStat64; typedef off_t _MDOff64_t; #elif defined(_PR_NO_LARGE_FILES) typedef struct stat _MDStat64; typedef PRInt64 _MDOff64_t; #else #error "I don't know yet" #endif typedef PRIntn (*_MD_Fstat64)(PRIntn osfd, _MDStat64 *buf); typedef PRIntn (*_MD_Open64)(const char *path, int oflag, ...); #if defined(VMS) typedef PRIntn (*_MD_Stat64)(const char *path, _MDStat64 *buf, ...); #else typedef PRIntn (*_MD_Stat64)(const char *path, _MDStat64 *buf); #endif typedef _MDOff64_t (*_MD_Lseek64)(PRIntn osfd, _MDOff64_t, PRIntn whence); typedef void* (*_MD_Mmap64)( void *addr, PRSize len, PRIntn prot, PRIntn flags, PRIntn fildes, _MDOff64_t offset); struct _MD_IOVector { _MD_Open64 _open64; _MD_Mmap64 _mmap64; _MD_Stat64 _stat64; _MD_Fstat64 _fstat64; _MD_Lseek64 _lseek64; }; extern struct _MD_IOVector _md_iovector; #endif /* prunixos_h___ */