3rd-party/linux-kernel-module-cheat
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Host insane unsafe usage

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This commit is contained in:
Ciro Santilli
2017-08-03 04:32:06 +01:00
parent dfc4981e46
commit 0bb3e8519a
13 changed files with 85 additions and 54 deletions
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9
kernel_module/user/poll.c
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@@ -1,4 +1,5 @@
#define _XOPEN_SOURCE 700
#include <assert.h>
#include <fcntl.h> /* creat, O_CREAT */
#include <poll.h> /* poll */
#include <stdio.h> /* printf, puts, snprintf */
@@ -6,11 +7,15 @@
#include <unistd.h> /* read */
int main(int argc, char **argv) {
char buf[1024], path[1024];
char buf[1024];
int fd, i, n;
short revents;
struct pollfd pfd;
if (argc < 2) {
fprintf(stderr, "usage: %s <poll-device>\n", argv[0]);
exit(EXIT_FAILURE);
}
fd = open(argv[1], O_RDONLY | O_NONBLOCK);
if (fd == -1) {
perror("open");
@@ -23,7 +28,7 @@ int main(int argc, char **argv) {
i = poll(&pfd, 1, -1);
if (i == -1) {
perror("poll");
exit(EXIT_FAILURE);
assert(0);
}
revents = pfd.revents;
if (revents & POLLIN) {