FSETPOS(3C) Standard C Library Functions FSETPOS(3C)
fsetpos - reposition a file pointer in a stream
#include <stdio.h>
int fsetpos(FILE *stream, const fpos_t *pos);
The fsetpos() function sets the file position indicator for the
stream pointed to by stream according to the value of the object
pointed to by pos, which must be a value obtained from an earlier
call to fgetpos(3C) on the same stream.
A successful call to fsetpos() function clears the end-of-file
indicator for the stream and undoes any effects of ungetc(3C) on the
same stream. After an fsetpos() call, the next operation on an
update stream may be either input or output.
The fsetpos() function returns 0 if it succeeds; otherwise it returns
a non-zero value and sets errno to indicate the error.
The fsetpos() function may fail if:
EBADF
The file descriptor underlying stream is not valid.
ESPIPE
The file descriptor underlying stream is associated with a
pipe, a FIFO, or a socket.
The fsetpos() function has a transitional interface for 64-bit file
offsets. See lf64(7).
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
lseek(2), fgetpos(3C), fopen(3C), fseek(3C), ftell(3C), rewind(3C),
ungetc(3C), attributes(7), lf64(7), standards(7)
July 24, 2002 FSETPOS(3C)
NAME
fsetpos - reposition a file pointer in a stream
SYNOPSIS
#include <stdio.h>
int fsetpos(FILE *stream, const fpos_t *pos);
DESCRIPTION
The fsetpos() function sets the file position indicator for the
stream pointed to by stream according to the value of the object
pointed to by pos, which must be a value obtained from an earlier
call to fgetpos(3C) on the same stream.
A successful call to fsetpos() function clears the end-of-file
indicator for the stream and undoes any effects of ungetc(3C) on the
same stream. After an fsetpos() call, the next operation on an
update stream may be either input or output.
RETURN VALUES
The fsetpos() function returns 0 if it succeeds; otherwise it returns
a non-zero value and sets errno to indicate the error.
ERRORS
The fsetpos() function may fail if:
EBADF
The file descriptor underlying stream is not valid.
ESPIPE
The file descriptor underlying stream is associated with a
pipe, a FIFO, or a socket.
USAGE
The fsetpos() function has a transitional interface for 64-bit file
offsets. See lf64(7).
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+
SEE ALSO
lseek(2), fgetpos(3C), fopen(3C), fseek(3C), ftell(3C), rewind(3C),
ungetc(3C), attributes(7), lf64(7), standards(7)
July 24, 2002 FSETPOS(3C)