tail head cat sleep
QR code linking to this page
Main index Section 3
Go to:
Options

Manual Pages  — FCLOSE

NAME

fclose, fdclose, fcloseall – close a stream

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <stdio.h>

int
fclose(FILE *stream);

int
fdclose(FILE *stream, int *fdp);

void
fcloseall(void);

DESCRIPTION

The fclose() function dissociates the named stream from its underlying file or set of functions. If the stream was being used for output, any buffered data is written first, using fflush(3).

The fdclose() function is equivalent to fclose() except that it does not close the underlying file descriptor. If fdp is not NULL, the file descriptor will be written to it. If the fdp argument will be different then NULL the file descriptor will be returned in it, If the stream does not have an associated file descriptor, fdp will be set to -1. This type of stream is created with functions such as fmemopen(3), funopen(3), or open_memstream(3).

The fcloseall() function calls fclose() on all open streams.

RETURN VALUES

fcloseall() does not return a value.

Upon successful completion the fclose() and fdclose() functions return 0. Otherwise, EOF is returned and the global variable errno is set to indicate the error.

ERRORS

fdclose() fails if:
[EOPNOTSUPP]
  The stream does not have an associated file descriptor.

The fclose() and fdclose() functions may also fail and set errno for any of the errors specified for fflush(3).

The fclose() function may also fail and set errno for any of the errors specified for close(2).

NOTES

The fclose() and fdclose() functions do not handle NULL arguments in the stream variable; this will result in a segmentation violation. This is intentional. It makes it easier to make sure programs written under FreeBSD are bug free. This behaviour is an implementation detail, and programs should not rely upon it.

SEE ALSO

close(2), fflush(3), fopen(3), setbuf(3)

STANDARDS

The fclose() function conforms to ISO/IEC 9899:1990 ("ISO C90").

HISTORY

The fcloseall() function first appeared in FreeBSD 7.0 .

The fdclose() function first appeared in FreeBSD 11.0 .

FCLOSE (3) July 4, 2015
tail head cat sleep
QR code linking to this page
Main index Section 3
Go to:
Options

Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

“ Our grievance is not just against Unix itself, but against the cult of Unix zealots who defend and nurture it. They take the heat, disease, and pestilence as givens, and, as ancient shamans did, display their wounds, some self-inflicted, as proof of their power and wizardry. We aim, through bluntness and humor, to show them that they pray to a tin god, and that science, not religion, is the path to useful and friendly technology. ”
— The Unix Haters' handbook