FreeBSD manual
download PDF document: sysdecode_kevent_filter.3.pdf
sysdecode_kevent(3) FreeBSD Library Functions Manual sysdecode_kevent(3)
NAME
sysdecode_kevent, sysdecode_kevent_fflags, sysdecode_kevent_filter,
sysdecode_kevent_flags - output description of kevent structure fields
LIBRARY
System Argument Decoding Library (libsysdecode, -lsysdecode)
SYNOPSIS
#include <sysdecode.h>
void
sysdecode_kevent_fflags(FILE *fp, short filter, int fflags, int base);
bool
sysdecode_kevent_flags(FILE *fp, int flags, int *rem);
const char *
sysdecode_kevent_filter(int filter);
DESCRIPTION
These functions provide text descriptions of struct kevent fields.
The sysdecode_kevent_fflags() function outputs a text description of the
fflags member of a struct kevent to the stream fp. For the EVFILT_READ,
EVFILT_WRITE, EVFILT_VNODE, EVFILT_PROC, EVFILT_PROCDESC, EVFILT_TIMER,
and EVFILT_USER filters, sysdecode_kevent_fflags() outputs a bitmask of
filter-specific NOTE_* flags as documented in kevent(2). For other
values of filter, the value of fflags is output in the indicated base
(one of 8, 10, or 16).
The sysdecode_kevent_filter() function returns a text description of the
filter member of a struct kevent. NULL is returned if the filter value
is unknown.
The sysdecode_kevent_flags() function outputs a text description of the
flags member of a struct kevent to the stream fp. This function uses the
same calling convention and formatting as the other functions described
in sysdecode_mask(3).
RETURN VALUES
The sysdecode_kevent_filter function returns the name of a filter or NULL
if the filter value is unknown.
The sysdecode_kevent_flags function returns true if any flags in the
flags field were decoded and false if no flags were decoded.
SEE ALSO
sysdecode(3), sysdecode_enum(3), sysdecode_mask(3)
FreeBSD 14.0-RELEASE-p6 November 24, 2017 FreeBSD 14.0-RELEASE-p6