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   fgetpos.3p    ( 3 )

получить информацию о текущей позиции файла (get current file position information)

Пролог (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.

Имя (Name)

fgetpos — get current file position information

Синопсис (Synopsis)

#include <stdio.h>

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


Описание (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.


Возвращаемое значение (Return value)

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

Ошибки (Error)

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.


Примеры (Examples)

None.

Использование в приложениях (Application usage)

None.

Обоснование (Rationale)

None.

Будущие направления (Future directions)

None.

Смотри также (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)