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/*
* MIT License
*
* Copyright (c) 2020 Alessandro Mauri
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <poll.h>
#include <sys/inotify.h>
#include "util.h"
#include "disk.h"
#define DEV_BLOCK_ROOT "/dev/block/"
// FIXME: this is all very inefficient code, everything gets called multiple
// times and it is not at all minimal
int main (int argc, char *argv[])
{
struct pollfd watchpoll = {0, POLLIN, 0};
const struct inotify_event *event;
char buf[4096], strbuf[256];
char *ptr;
int opt, len, fd;
while ((opt = getopt(argc, argv, "h")) != -1) {
switch (opt) {
case 'h':
usage();
exit(EXIT_SUCCESS);
break;
default:
puts(red("Option not recognized\n"));
usage();
exit(EXIT_FAILURE);
break;
}
}
if ((fd = inotify_init()) < 0)
die("error initializing inotify watch list");
watchpoll.fd = fd;
if (inotify_add_watch(fd, DEV_BLOCK_ROOT, IN_CREATE | IN_DELETE) < 0)
die ("error adding " DEV_BLOCK_ROOT " to the watch list");
for (;poll(&watchpoll, 1, -1);) {
if (watchpoll.revents != POLLIN)
continue;
len = read(watchpoll.fd, buf, sizeof(buf));
if (len < 0) {
printf(red("read error: %s\n"), strerror(errno));
break;
} else if (!len) {
puts("No data to read\n");
break;
}
for (ptr = buf; ptr < buf + len;
ptr += sizeof(struct inotify_event) + event->len) {
event = (const struct inotify_event *) ptr;
if(!event->len)
continue;
strcpy(strbuf, DEV_BLOCK_ROOT);
strcat(strbuf, event->name);
printf(yellow("%s: %s - %s"),
event->mask & IN_CREATE ? "Created" : "Removed",
get_path(strbuf),
path_is_disk(get_path(strbuf)) > 0 ? "disk" : "part");
printf(yellow("\n"));
}
}
die("polling interrupted");
close(watchpoll.fd);
return 0;
}