The Tor Browser: nsprpub/pr/include/md/_unixos.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_unixos.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_unixos.h

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #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(__GNU__) && !defined(__GLIBC__) \
     && !defined(DARWIN)
 #ifndef FD_SETSIZE
 #define FD_SETSIZE  4096
 #endif
 #endif
 #include <unistd.h>
 #include <stddef.h>
 #include <sys/stat.h>
 #include <dirent.h>
 #include <errno.h>
 #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 <sys/time.h>.
  * In Version 3, the header file for select() is
  * changed to <sys/select.h>.
  *
  * fd_set is defined in <sys/types.h>.  Usually
  * <sys/time.h> includes <sys/types.h>, but on some
  * older systems <sys/time.h> does not include
  * <sys/types.h>, so we include it explicitly.
  */
 #include <sys/time.h>
 #include <sys/types.h>
 #if defined(AIX) || defined(SYMBIAN)
 #include <sys/select.h>
 #endif
 #ifndef SYMBIAN
 #define HAVE_NETINET_TCP_H
 #endif
 #define _PR_HAVE_O_APPEND
 #define PR_DIRECTORY_SEPARATOR		'/'
 #define PR_DIRECTORY_SEPARATOR_STR	"/"
 #define PR_PATH_SEPARATOR		':'
 #define PR_PATH_SEPARATOR_STR		":"
 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 <sys/mman.h>
 #ifndef PROT_NONE
 #define PROT_NONE 0x0
 #endif
 #if defined(DEBUG) && !defined(DARWIN)
 #if !defined(SOLARIS)
 #include <string.h>  /* 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);
 extern void _PR_UnixCleanup(void);
 #define _MD_EARLY_CLEANUP _PR_UnixCleanup
 /************************************************************************/
 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) */
 /************************************************************************/
 #ifdef _MD_INTERVAL_USE_GTOD
 extern PRIntervalTime   _PR_UNIX_GetInterval(void);
 extern PRIntervalTime   _PR_UNIX_TicksPerSecond(void);
 #define _MD_INTERVAL_INIT()
 #define _MD_GET_INTERVAL		_PR_UNIX_GetInterval
 #define _MD_INTERVAL_PER_SEC		_PR_UNIX_TicksPerSecond
 #endif
 #ifdef HAVE_CLOCK_MONOTONIC
 extern PRIntervalTime   _PR_UNIX_GetInterval2(void);
 extern PRIntervalTime   _PR_UNIX_TicksPerSecond2(void);
 #define _MD_INTERVAL_INIT()
 #define _MD_GET_INTERVAL		_PR_UNIX_GetInterval2
 #define _MD_INTERVAL_PER_SEC		_PR_UNIX_TicksPerSecond2
 #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
 extern PRStatus _MD_SyncMemMap(
     PRFileDesc *fd,
     void *addr,
     PRUint32 len);
 #define _MD_SYNC_MEM_MAP _MD_SyncMemMap
 /*
  * 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, ...);
 typedef PRIntn (*_MD_Stat64)(const char *path, _MDStat64 *buf);
 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___ */

The Tor Browser / annotate

nsprpub/pr/include/md/_unixos.h@7e26c7da4463 (annotated)

nsprpub/pr/include/md/_unixos.h