fgetpos(3p) — Linux manual page

FGETPOS(3P)             POSIX Programmer's Manual            FGETPOS(3P)

PROLOG

       This manual page is part of the POSIX Programmer's Manual.  The
       Linux implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior),
       or the interface may not be implemented on Linux.

NAME

       fgetpos — get current file position information

SYNOPSIS

       #include <stdio.h>

       int fgetpos(FILE *restrict stream, fpos_t *restrict pos);

DESCRIPTION

       The functionality described on this reference page is aligned
       with the ISO C standard. Any conflict between the requirements
       described here and the ISO C standard is unintentional. This
       volume of POSIX.1‐2017 defers to the ISO C standard.

       The fgetpos() function shall store the current values of the
       parse state (if any) and file position indicator for the stream
       pointed to by stream in the object pointed to by pos.  The value
       stored contains unspecified information usable by fsetpos() for
       repositioning the stream to its position at the time of the call
       to fgetpos().

       The fgetpos() function shall not change the setting of errno if
       successful.

RETURN VALUE

       Upon successful completion, fgetpos() shall return 0; otherwise,
       it shall return a non-zero value and set errno to indicate the
       error.

ERRORS

       The fgetpos() function shall fail if:

       EBADF  The file descriptor underlying stream is not valid.

       EOVERFLOW
              The current value of the file position cannot be
              represented correctly in an object of type fpos_t.

       ESPIPE The file descriptor underlying stream is associated with a
              pipe, FIFO, or socket.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       Section 2.5, Standard I/O Streams, fopen(3p), ftell(3p),
       rewind(3p), ungetc(3p)

       The Base Definitions volume of POSIX.1‐2017, stdio.h(0p)

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  In the event of any
       discrepancy between this version and the original IEEE and The
       Open Group Standard, the original IEEE and The Open Group
       Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .

       Any typographical or formatting errors that appear in this page
       are most likely to have been introduced during the conversion of
       the source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group               2017                       FGETPOS(3P)

Pages that refer to this page: stdio.h(0p), ftell(3p)

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