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#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/inotify.h>
#include <unistd.h>
#include "Clean.h"
char* clstocs(CleanString* cs) {
char* s = calloc(CleanStringLength(cs) + 1, 1);
uint8_t i;
for (i = 0; i < CleanStringLength(cs); i++)
s[i] = CleanStringCharacters(cs)[i];
s[i] = 0;
return s;
}
static struct {int length; char chars[1]; } empty_string = {0,""};
int clean_errno(int ignored) {
return errno;
}
int clean_inotify_init(int ignored) {
int fd;
fd = inotify_init();
if (fd < 0)
return 0;
fcntl(fd, IN_NONBLOCK);
return fd;
}
void clean_inotify_add_watch(int fd, CleanString* fname_, int mask, int *re_watch, int *re_fd) {
char* fname = clstocs(fname_);
*re_watch = inotify_add_watch(fd, fname, mask);
free(fname);
*re_fd = fd;
}
void clean_inotify_rm_watch(int fd, int watch, int *re_code, int *re_fd) {
*re_fd = fd;
*re_code = inotify_rm_watch(fd, watch);
}
void clean_poll(int fd, int *re_nrevents, int *re_fd) {
struct pollfd pfd = {fd, POLLIN, 0};
*re_nrevents = poll(&pfd, 1, -1);
*re_fd = fd;
}
static CleanStringVariable(wds_string, 1024);
static CleanStringVariable(masks_string, 1024);
void clean_inotify_check(int fd,
int *re_ok, CleanString* re_wds, CleanString* re_masks, int *re_fd) {
char buf[4096] __attribute__((aligned(__alignof__(struct inotify_event))));
const struct inotify_event *ev;
ssize_t len;
char *ptr;
struct pollfd pfd = {fd, POLLIN, 0};
int poll_n;
char *wds_ptr = CleanStringCharacters(wds_string);
char *masks_ptr = CleanStringCharacters(masks_string);
CleanStringLength(wds_string) = 0;
CleanStringLength(masks_string) = 0;
*re_ok = 0;
*re_fd = fd;
*re_wds = (CleanString) &empty_string;
*re_masks = (CleanString) &empty_string;
for (;;) {
poll_n = poll(&pfd, 1, 50);
if (poll_n < 0) {
return;
} else if (poll_n == 0) {
break;
}
len = read(fd, buf, sizeof buf);
if (len == -1 && errno != EAGAIN) {
return;
}
if (len <= 0) {
break;
}
for (ptr = buf; ptr < buf + len;
ptr += sizeof(struct inotify_event) + ev->len) {
ev = (const struct inotify_event*) ptr;
memcpy(masks_ptr, &ev->mask, 4);
masks_ptr += 4;
CleanStringLength(masks_string) += 4;
memcpy(wds_ptr, &ev->wd, sizeof(int));
wds_ptr += sizeof(int);
CleanStringLength(wds_string) += sizeof(int);
}
}
*re_wds = (CleanString) wds_string;
*re_masks = (CleanString) masks_string;
*re_ok = 1;
}
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