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9fc9e1c916
* libc/include/sys/reent.h: Add _GLOBAL_REENT macro. * libc/stdio: Globally remove/replace all references to fp->_data. Replace with _REENT or _GLOBAL_REENT where appropriate. * libc/stdio/asprintf.c: Ditto. * libc/stdio/fclose.c: Ditto. * libc/stdio/fvwrite.c: Ditto. * libc/stdio/makebuf.c: Ditto. * libc/stdio/refill.c: Ditto. * libc/stdio/local.h: Ditto. * libc/stdio/setvbuf.c: Ditto. * libc/stdio/sscanf.c: Ditto. * libc/stdio/stdio.c: Ditto. * libc/stdio/ungetc.c: Ditto. * libc/stdio/vfscanf.c: Ditto. * libc/stdio/vsscanf.c: Ditto. * libc/stdio/fopen.c: Ditto. Also use _fseek_r in _fopen_r. * libc/stdio/vasprintf.c: Ditto. Also call _vfprintf_r directly. * libc/stdio/vsnprintf.c: Ditto. * libc/stdio/vsprintf.c: Ditto. * libc/stdio/fcloseall.c(fcloseall): Use _GLOBAL_REENT macro instead of _REENT to walk file list. * libc/stdio/fflush.c: Ditto. * libc/stdio/fgetpos.c: Add reentrant version and have regular version call reentrant version with _REENT argument. * libc/stdio/fsetpos.c: Ditto. * libc/stdio/fseek.c: Ditto. * libc/stdio/fseeko.c: Ditto. * libc/stdio/ftell.c: Ditto. * libc/stdio/ftello.c: Ditto. * libc/stdio/freopen.c: Ditto. * libc/stdio/findfp.c: Use _GLOBAL_REENT pointer when adding new files to chain. Also use _GLOBAL_REENT pointer for cleaning up. * libc/stdio/fiprintf.c: Reformatted to minimize duplicate code. * libc/stdio/siprintf.c: Ditto. * libc/stdio/iprintf.c: Ditto. * libc/stdio/fprintf.c: Ditto. * libc/stdio/printf.c: Ditto. * libc/stdio/snprintf.c: Call _vfprintf_r directly. * libc/stdio/sprintf.c: Ditto. * libc/stdio/vprintf.c: Ditto. Also add _REENT_ONLY check. * libc/stdio/rewind.c: Call _fseek_r directly. * libc/stdio/tmpfile.c: Call _fopen_r and _remove_r directly. * libc/stdio/vfprintf.c (_VFPRINTF_R): Change _r routines to use data pointer. (get_arg): Add extra struct _reent pointer argument. * libc/stdio64/fgetpos64.c: Add _r versions, remove any reference to fp->_data. * libc/stdio64/fopen64.c: Ditto. * libc/stdio64/freopen64.c: Ditto. * libc/stdio64/fsetpos64.c: Ditto. * libc/stdio64/ftello64.c: Ditto. * libc/stdio64/local64.h: Ditto. * libc/stdio64/stdio64.c: Ditto. * libc/stdio64/fseeko64.c: Ditto plus use _fstat_r instead of _fstat64_r for the meantime.
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/*
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FUNCTION
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<<fsetpos64>>---restore position of a large stream or file
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INDEX
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fsetpos64
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INDEX
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_fsetpos64_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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int fsetpos64(FILE *<[fp]>, const _fpos64_t *<[pos]>);
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int _fsetpos64_r(struct _reent *<[ptr]>, FILE *<[fp]>,
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const _fpos64_t *<[pos]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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int fsetpos64(<[fp]>, <[pos]>)
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FILE *<[fp]>;
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_fpos64_t *<[pos]>;
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int _fsetpos64_r(<[ptr]>, <[fp]>, <[pos]>)
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struct _reent *<[ptr]>;
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FILE *<[fp]>;
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_fpos64_t *<[pos]>;
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DESCRIPTION
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Objects of type <<FILE>> can have a ``position'' that records how much
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of the file your program has already read. Many of the <<stdio>> functions
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depend on this position, and many change it as a side effect.
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You can use <<fsetpos64>> to return the large file identified by <[fp]> to a
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previous position <<*<[pos]>>> (after first recording it with <<fgetpos64>>).
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See <<fseeko64>> for a similar facility.
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RETURNS
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<<fgetpos64>> returns <<0>> when successful. If <<fgetpos64>> fails, the
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result is <<1>>. The reason for failure is indicated in <<errno>>:
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either <<ESPIPE>> (the stream identified by <[fp]> doesn't support
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64-bit repositioning) or <<EINVAL>> (invalid file position).
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PORTABILITY
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<<fsetpos64>> is a glibc extension.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek64>>, <<read>>, <<sbrk>>, <<write>>.
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*/
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#include <stdio.h>
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#ifdef __LARGE64_FILES
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int
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_DEFUN (_fsetpos64_r, (ptr, iop, pos),
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struct _reent *ptr _AND
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FILE * iop _AND
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_CONST _fpos64_t * pos)
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{
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int x = _fseeko64_r (ptr, iop, (_off64_t)(*pos), SEEK_SET);
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if (x != 0)
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return 1;
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return 0;
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}
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#ifndef _REENT_ONLY
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int
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_DEFUN (fsetpos64, (iop, pos),
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FILE * iop _AND
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_CONST _fpos64_t * pos)
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{
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return _fsetpos64_r (_REENT, iop, pos);
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}
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#endif /* !_REENT_ONLY */
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#endif /* __LARGE64_FILES */
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