package Linux::FANotify::LowLevel;
use 5.014;
use strict;
use warnings;
my $ccode;my @exports;
BEGIN {
my @constants=qw(
FAN_ACCESS
FAN_MODIFY
FAN_CLOSE_WRITE
FAN_CLOSE_NOWRITE
FAN_OPEN
FAN_Q_OVERFLOW
FAN_OPEN_PERM
FAN_ACCESS_PERM
FAN_ONDIR
FAN_EVENT_ON_CHILD
FAN_CLOSE
FAN_CLOEXEC
FAN_NONBLOCK
FAN_CLASS_NOTIF
FAN_CLASS_CONTENT
FAN_CLASS_PRE_CONTENT
FAN_ALL_CLASS_BITS
FAN_UNLIMITED_QUEUE
FAN_UNLIMITED_MARKS
FAN_ALL_INIT_FLAGS
FAN_MARK_ADD
FAN_MARK_REMOVE
FAN_MARK_DONT_FOLLOW
FAN_MARK_ONLYDIR
FAN_MARK_MOUNT
FAN_MARK_IGNORED_MASK
FAN_MARK_IGNORED_SURV_MODIFY
FAN_MARK_FLUSH
FAN_ALL_MARK_FLAGS
FAN_ALL_EVENTS
FAN_ALL_PERM_EVENTS
FAN_ALL_OUTGOING_EVENTS
FANOTIFY_METADATA_VERSION
FAN_ALLOW
FAN_DENY
FAN_NOFD
);
$ccode=<<EOC;
#include <sys/fanotify.h>
#include <stdlib.h>
#include <string.h>
EOC
for my $c (@constants) {
my $sub_name = lc($c =~ s{^.*?_}{}r);
$ccode .= "long CONST_${sub_name}() { return $c; }\n";
push @exports,"CONST_${sub_name}";
}
$ccode.=<<EOC;
int perl_fanotify_init(unsigned int flags, unsigned int event_f_flags) {
return fanotify_init(flags,event_f_flags);
}
int perl_fanotify_mark(int fanotify_fd, unsigned int flags,
unsigned long mask, int dfd, const char *pathname) {
return fanotify_mark(fanotify_fd, flags, mask, dfd, pathname);
}
SV* perl_memalign(size_t alignment, size_t size) {
void* buffer=NULL;
int err;
err = posix_memalign(&buffer, alignment, size);
if (err != 0 || buffer == NULL) {
SV* bang = get_sv("!", 0);
sv_setiv(bang, (IV)err);
sv_setpvf(bang, "%s", strerror(err)); /* let Perl copy the string */
SvIOK_on(bang);
return &PL_sv_undef;
}
return sv_2mortal(newSVpvn(buffer,size));
}
AV* unpack_events(SV* svbuffer) {
STRLEN len;
void * buffer = SvPV(svbuffer,len);
AV* ret = newAV();
HV* event;
struct fanotify_event_metadata *data;
data = (struct fanotify_event_metadata *) buffer;
while(FAN_EVENT_OK(data,len)) {
event = newHV();
av_push(ret,newRV_noinc((SV*)event));
hv_store(event,"mask",4,newSViv(data->mask),0);
hv_store(event,"fd",2,newSViv(data->fd),0);
hv_store(event,"pid",3,newSViv(data->pid),0);
buffer = FAN_EVENT_NEXT(data,len);
}
return ret;
}
EOC
}
use Inline C => $ccode;
use Sub::Exporter -setup => {
exports => [
@exports,
qw(perl_fanotify_init perl_fanotify_mark perl_memalign unpack_events)
],
groups => {
constants => \@exports,
functions => [qw(perl_fanotify_init perl_fanotify_mark unpack_events)],
},
};
1;
