73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/device.h>
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#include <sys/hotplug.h>
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#include <err.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char *argv[])
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{
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#if 0
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struct kevent ev;
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#endif
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struct hotplug_event he;
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char *device;
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int fd, kq, kev;
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if (argc == 2)
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device = argv[1];
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else
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device = "/dev/hotplug";
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fd = open(device, O_RDONLY);
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if (fd == -1)
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err(2, "open %s", device);
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#if 0
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if ((kq = kqueue()) <= 0)
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err(2, "kqueue");
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EV_SET(&ev, fd, EVFILT_DEVICE, EV_ADD | EV_ENABLE | EV_CLEAR,
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NOTE_CHG_DATA, 0, NULL);
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if (kevent(kq, &ev, 1, NULL, 0, NULL) < 0)
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err(2, "kevent init");
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#endif
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while (1) {
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#if 0
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struct pollfd fds;
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int result;
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fds.fd = kq;
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fds.events = POLLIN;
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result = poll(&fds, 1, INFTIM);
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printf("poll result %d\n", result);
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#endif
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int n;
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n = read(fd, &he, sizeof(he));
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if (n == -1)
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err(2, "read");
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printf("hotplug event %d %d %s\n",
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he.he_devclass, he.he_type, he.he_devname);
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if (he.he_devclass != DV_TTY)
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continue;
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switch (he.he_type) {
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case HOTPLUG_DEVAT:
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printf("wscons attach %s\n", he.he_devname);
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break;
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case HOTPLUG_DEVDT:
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printf("wscons detach %s\n", he.he_devname);
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break;
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default:
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break;
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}
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}
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return 0;
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}
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