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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [stdio64/] [fsetpos64.c] - Rev 855
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/* FUNCTION <<fsetpos64>>---restore position of a large stream or file INDEX fsetpos64 INDEX _fsetpos64_r ANSI_SYNOPSIS #include <stdio.h> int fsetpos64(FILE *<[fp]>, const _fpos64_t *<[pos]>); int _fsetpos64_r(struct _reent *<[ptr]>, FILE *<[fp]>, const _fpos64_t *<[pos]>); TRAD_SYNOPSIS #include <stdio.h> int fsetpos64(<[fp]>, <[pos]>) FILE *<[fp]>; _fpos64_t *<[pos]>; int _fsetpos64_r(<[ptr]>, <[fp]>, <[pos]>) struct _reent *<[ptr]>; FILE *<[fp]>; _fpos64_t *<[pos]>; DESCRIPTION Objects of type <<FILE>> can have a ``position'' that records how much of the file your program has already read. Many of the <<stdio>> functions depend on this position, and many change it as a side effect. You can use <<fsetpos64>> to return the large file identified by <[fp]> to a previous position <<*<[pos]>>> (after first recording it with <<fgetpos64>>). See <<fseeko64>> for a similar facility. RETURNS <<fgetpos64>> returns <<0>> when successful. If <<fgetpos64>> fails, the result is <<1>>. The reason for failure is indicated in <<errno>>: either <<ESPIPE>> (the stream identified by <[fp]> doesn't support 64-bit repositioning) or <<EINVAL>> (invalid file position). PORTABILITY <<fsetpos64>> is a glibc extension. Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, <<lseek64>>, <<read>>, <<sbrk>>, <<write>>. */ #include <stdio.h> #ifdef __LARGE64_FILES int _DEFUN (_fsetpos64_r, (ptr, iop, pos), struct _reent *ptr _AND FILE * iop _AND _CONST _fpos64_t * pos) { int x = _fseeko64_r (ptr, iop, (_off64_t)(*pos), SEEK_SET); if (x != 0) return 1; return 0; } #ifndef _REENT_ONLY int _DEFUN (fsetpos64, (iop, pos), FILE * iop _AND _CONST _fpos64_t * pos) { return _fsetpos64_r (_REENT, iop, pos); } #endif /* !_REENT_ONLY */ #endif /* __LARGE64_FILES */
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