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