diff options
Diffstat (limited to 'posix/unistd.h')
| -rw-r--r-- | posix/unistd.h | 71 |
1 files changed, 67 insertions, 4 deletions
diff --git a/posix/unistd.h b/posix/unistd.h index 9fcad90cb1..e44dcff84f 100644 --- a/posix/unistd.h +++ b/posix/unistd.h @@ -133,6 +133,11 @@ __BEGIN_DECLS _POSIX_SYNC_IO Synchronous I/O may be performed. _POSIX_ASYNC_IO Asynchronous I/O may be performed. _POSIX_PRIO_IO Prioritized Asynchronous I/O may be performed. + + Support for the Large File Support interface is not generally available. + If it is available the following constants are defined to one. + _LFS64_LARGEFILE Low-level I/O supports large files. + _LFS64_STDIO Standard I/O supports large files. */ #include <bits/posix_opt.h> @@ -171,15 +176,23 @@ typedef __uid_t uid_t; # endif # ifndef off_t +# ifndef __USE_FILE_OFFSET64 typedef __off_t off_t; +# else +typedef __off64_t off_t; +# endif # define off_t off_t # endif +# if defined __USE_LARGEFILE64 && !defined off64_t +typedef __off64_t off64_t; +# define off64_t off64_t +# endif # ifndef pid_t typedef __pid_t pid_t; # define pid_t pid_t # endif -#endif +#endif /* Unix98 */ /* Values for the second argument to access. These may be OR'd together. */ @@ -221,7 +234,15 @@ extern int euidaccess __P ((__const char *__name, int __type)); or the end of the file (if WHENCE is SEEK_END). Return the new file position. */ extern __off_t __lseek __P ((int __fd, __off_t __offset, int __whence)); +#ifndef __USE_FILE_OFFSET64 extern __off_t lseek __P ((int __fd, __off_t __offset, int __whence)); +#else +extern __off_t lseek __P ((int __fd, __off_t __offset, int __whence)) + __asm__ ("lseek64"); +#endif +#ifdef __USE_LARGEFILE64 +extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); +#endif /* Close the file descriptor FD. */ extern int __close __P ((int __fd)); @@ -240,13 +261,31 @@ extern ssize_t write __P ((int __fd, __const __ptr_t __buf, size_t __n)); /* Read NBYTES into BUF from FD at the given position OFFSET without changing the file pointer. Return the number read, -1 for errors or 0 for EOF. */ +# ifndef __USE_FILE_OFFSET64 extern ssize_t pread __P ((int __fd, __ptr_t __buf, size_t __nbytes, __off_t __offset)); +# else +extern ssize_t pread __P ((int __fd, __ptr_t __buf, size_t __nbytes, + __off_t __offset)) __asm__ ("pread64"); +# endif +# ifdef __USE_LARGEFILE64 +extern ssize_t pread64 __P ((int __fd, __ptr_t __buf, size_t __nbytes, + __off64_t __offset)); +# endif /* Write N bytes of BUF to FD at the given position OFFSET without changing the file pointer. Return the number written, or -1. */ +# ifndef __USE_FILE_OFFSET64 extern ssize_t pwrite __P ((int __fd, __const __ptr_t __buf, size_t __n, __off_t __offset)); +# else +extern ssize_t pwrite __P ((int __fd, __const __ptr_t __buf, size_t __n, + __off_t __offset)) __asm__ ("pwrite64"); +# endif +# ifdef __USE_LARGEFILE64 +extern ssize_t pwrite64 __P ((int __fd, __const __ptr_t __buf, size_t __n, + __off64_t __offset)); +# endif #endif @@ -489,18 +528,18 @@ extern __pid_t getpgid __P ((__pid_t __pid)); The default in GNU is to provide the System V function. The BSD function is available under -D_BSD_SOURCE with -lbsd-compat. */ -#ifndef __FAVOR_BSD +# ifndef __FAVOR_BSD /* Set the process group ID of the calling process to its own PID. This is exactly the same as `setpgid (0, 0)'. */ extern int setpgrp __P ((void)); -#else +# else /* Another name for `setpgid' (above). */ extern int setpgrp __P ((__pid_t __pid, __pid_t __pgrp)); -#endif /* Favor BSD. */ +# endif /* Favor BSD. */ #endif /* Use SVID or BSD. */ /* Create a new session with the calling process as its leader. @@ -792,10 +831,26 @@ extern int getpagesize __P ((void)); /* Truncate FILE to LENGTH bytes. */ +#ifndef __USE_FILE_OFFSET64 extern int truncate __P ((__const char *__file, __off_t __length)); +#else +extern int truncate __P ((__const char *__file, __off_t __length)) + __asm__ ("truncate64"); +#endif +#ifdef __USE_LARGEFILE64 +extern int truncate64 __P ((__const char *__file, __off64_t __length)); +#endif /* Truncate the file FD is open on to LENGTH bytes. */ +#ifndef __USE_FILE_OFFSET64 extern int ftruncate __P ((int __fd, __off_t __length)); +#else +extern int ftruncate __P ((int __fd, __off_t __length)) + __asm__ ("ftruncate64"); +#endif +#ifdef __USE_LARGEFILE64 +extern int ftruncate64 __P ((int __fd, __off64_t __length)); +#endif /* Return the maximum number of file descriptors @@ -855,7 +910,15 @@ extern long int syscall __P ((long int __sysno, ...)); # define F_TLOCK 2 /* Test and lock a region for exclusive use. */ # define F_TEST 3 /* Test a region for other processes locks. */ +# ifndef __USE_FILE_OFFSET64 extern int lockf __P ((int __fd, int __cmd, __off_t __len)); +# else +extern int lockf __P ((int __fd, int __cmd, __off_t __len)) + __asm__ ("lockf64"); +# endif +# ifdef __USE_LARGEFILE64 +extern int lockf64 __P ((int __fd, int __cmd, __off64_t __len)); +# endif #endif /* Use misc and F_LOCK not already defined. */ |