@node _fwalk, stdio
@subheading Syntax

@example
#include <libc/file.h>

void _fwalk(void (*function)(FILE *file));
@end example

@subheading Description

For each open file in the system, the given @var{function} is called,
passing the file pointer as its only argument.

@subheading Return Value

None.

@subheading Portability

@portability !ansi, !posix

@subheading Example

@example
void pfile(FILE *x)
@{ printf("FILE at %p\n", x); @}

_fwalk(pfile);
@end example