INTERPOSE (close, int, int fd)
{
CHECK_INTERPOSE (close);
unregister_fd (fd);
return orig_close (fd);
}
int close(int fd) {
if (!orig_close) preload_init();
TRACE("close %d\n", fd);
if (fd == tty0fd) {
tty0fd = -1;
} else if (fd == tty7fd) {
tty7fd = -1;
}
return orig_close(fd);
}
/*
int creat(const char *pathname, mode_t mode)
{
orig_creat_type orig_creat;
orig_creat = (orig_creat_type)dlsym(RTLD_NEXT,"creat");
clock_t start = clock();
int fd = orig_creat(pathname,mode);
clock_t end = clock();
double start_diff = ((double)(start-program_start))/(double)CLOCKS_PER_SEC;
double end_diff = ((double)(end-program_start))/(double)CLOCKS_PER_SEC;
return fd;
}
int open(const char *pathname, int flags)
{
orig_open_type orig_open;
orig_open = (orig_open_type)dlsym(RTLD_NEXT,"open");
clock_t start = clock();
int fd = orig_open(pathname,flags);
clock_t end = clock();
double start_diff = ((double)(start-program_start))/(double)CLOCKS_PER_SEC;
double end_diff = ((double)(end-program_start))/(double)CLOCKS_PER_SEC;
return fd;
}
int open(const char *pathname, int flags, mode_t mode)
{
orig_open2_type orig_open2;
orig_open2 = (orig_open2_type)dlsym(RTLD_NEXT,"open");
clock_t start = clock();
int fd = orig_open2(pathname,flags,mode);
clock_t end = clock();
double start_diff = ((double)(start-program_start))/(double)CLOCKS_PER_SEC;
double end_diff = ((double)(end-program_start))/(double)CLOCKS_PER_SEC;
return fd;
}
*/
int close(int fd)
{
orig_close_type orig_close;
orig_close = (orig_close_type)dlsym(RTLD_NEXT,"close");
clock_t start = clock();
int temp = orig_close(fd);
clock_t end = clock();
double start_diff = ((double)(start-program_start))/(double)CLOCKS_PER_SEC;
double end_diff = ((double)(end-program_start))/(double)CLOCKS_PER_SEC;
printf("%lf %lf Close Called \n", start_diff, end_diff);
return temp;
}
/* Grabs the system-wide lockfile that arbitrates which chroot is using the GPU.
*
* pid should be either the pid of the process that owns the GPU (eg. getpid()),
* or 0 to indicate that Chromium OS now owns the GPU.
*
* Returns 0 on success, or -1 on error.
*/
static int set_display_lock(unsigned int pid) {
if (lockfd == -1) {
if (pid == 0) {
ERROR("No display lock to release.\n");
return 0;
}
(void) mkdir(LOCK_FILE_DIR, 0777);
lockfd = orig_open(DISPLAY_LOCK_FILE, O_CREAT | O_WRONLY, 0666);
if (lockfd == -1) {
ERROR("Unable to open display lock file.\n");
return -1;
}
if (flock(lockfd, LOCK_EX) == -1) {
ERROR("Unable to lock display lock file.\n");
return -1;
}
}
if (ftruncate(lockfd, 0) == -1) {
ERROR("Unable to truncate display lock file.\n");
return -1;
}
char buf[11];
int len;
if ((len = snprintf(buf, sizeof(buf), "%d\n", pid)) < 0) {
ERROR("pid sprintf failed.\n");
return -1;
}
if (write(lockfd, buf, len) == -1) {
ERROR("Unable to write to display lock file.\n");
return -1;
}
if (pid == 0) {
int ret = orig_close(lockfd);
lockfd = -1;
if (ret == -1) {
ERROR("Failure when closing display lock file.\n");
}
return ret;
}
return 0;
}
/* Prevents some glitch if Chromium OS keeps cursor enabled (#2878). */
static void drm_disable_cursor()
{
int i, fd;
drmModeRes* resources;
if (!orig_open) preload_init();
fd = orig_open("/dev/dri/card0", O_RDWR, 0);
TRACE("%s %d\n", __func__, fd);
if (fd < 0)
return;
resources = drmModeGetResources(fd);
if (!resources)
goto closefd;
TRACE("%s res=%p\n", __func__, resources);
for (i = 0; i < resources->count_crtcs; i++) {
drmModeCrtc* crtc;
crtc = drmModeGetCrtc(fd, resources->crtcs[i]);
TRACE("%s crtc %d %p\n", __func__, i, crtc);
if (crtc) {
drmModeSetCursor(fd, crtc->crtc_id,
0, 0, 0);
drmModeFreeCrtc(crtc);
}
}
drmModeFreeResources(resources);
closefd:
orig_close(fd);
}
asmlinkage ssize_t our_close(int fd)
{
printk(KERN_INFO "SYS_CLOSE %s\n",current->comm);
return orig_close(fd);
}
