mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 18:25:57 +01:00
56738a1c70
Unsquashed version at v2-rc-unsquashed, but that cannot be merged as it breaks bisects at several points. All bugs will not bisect to this humongous change. It all started with a conversion of the Bash scripts to Python, mainly because I couldn't stand not being able to properly use --options for run which has a million options. Then since that required a full testing, I decided to do all the refactorings that I had in mind at once, and so I did and it became v2-rc. This is the largest patch I have ever done! OMG a few weeks of extra time. I'm never writing a Bash script for anything that starts getting big again. Some of the features are: * separate build-qemu and build-gem5 commands * common: convert scripts to python. Add --option for everything * rename build to build-buildroot now that we are splitting all the build commands, Linux kernel to follow * move all git submodules to submodules/ and all buildroot packages to packages/ * refactor the out/ structure. Keep projects on toplevel, because guest projects separate archs and host ones don't, making a toplevel arch wrong * do-release: rename to just release https://stackoverflow.com/questions/16174992/cant-get-argparse-to-read-quoted-string-with-dashes-in-it * run: add --terminal and explain gem5 pdb * just track the lvimrc * store CLI kernel config fragment inside buildlroot to avoid conflicts * gem5: document m5 initparam * readme: make a bunch of things awesomer * readme: fix broken refs * parsec-benchmark: update to 75d55ac446a43c47efb1044844a108c6c330184c Could not fetch otherwise. * gem5: M5_OVERRIDE_PY_SOURCE
42 lines
915 B
C
42 lines
915 B
C
/* https://github.com/cirosantilli/linux-kernel-module-cheat#poll */
|
|
|
|
#define _XOPEN_SOURCE 700
|
|
#include <assert.h>
|
|
#include <fcntl.h> /* creat, O_CREAT */
|
|
#include <poll.h> /* poll */
|
|
#include <stdio.h> /* printf, puts, snprintf */
|
|
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS */
|
|
#include <unistd.h> /* read */
|
|
|
|
int main(int argc, char **argv) {
|
|
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");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
pfd.fd = fd;
|
|
pfd.events = POLLIN;
|
|
while (1) {
|
|
puts("loop");
|
|
i = poll(&pfd, 1, -1);
|
|
if (i == -1) {
|
|
perror("poll");
|
|
assert(0);
|
|
}
|
|
revents = pfd.revents;
|
|
if (revents & POLLIN) {
|
|
n = read(pfd.fd, buf, sizeof(buf));
|
|
printf("POLLIN n=%d buf=%.*s\n", n, n, buf);
|
|
}
|
|
}
|
|
}
|