the-spellman/ime-disabler
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Update mei-disable.c

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Sam Sneed 2024-05-24 00:02:34 +00:00 committed by GitHub
parent 2105cad09f
commit 77b7bec3b6
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GPG key ID: B5690EEEBB952194
1 changed files with 32 additions and 28 deletions
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60
mei-disable.c
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@ -3,13 +3,16 @@
#include <fcntl.h> #include <fcntl.h>
#include <inttypes.h> #include <inttypes.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/stat.h>
#include <linux/mei.h> #include <linux/mei.h>
#include <unistd.h> #include <unistd.h>
#include <errno.h> #include <errno.h>
#include <stdlib.h>
#define _countof(a) (sizeof(a)/sizeof(*(a))) #define _countof(a) (sizeof(a)/sizeof(*(a)))
#define NUM_DEV_NAMES 5 #define NUM_DEV_NAMES 5
char *DEF_DEV_NAMES[NUM_DEV_NAMES] = {"/dev/mei0", "/dev/mei", "/dev/mei1", "/dev/mei2", "/dev/mei3"}; char *DEF_DEV_NAMES[NUM_DEV_NAMES] = {"mei0", "mei", "mei1", "mei2", "mei3"};
struct guid struct guid
{ {
uint32_t data1; uint32_t data1;
@ -29,25 +32,25 @@ uint8_t disable_cmd[] = {0xff,0x10,0x00,0x00};
char *find_dev_name() { char *find_dev_name() {
char *dev_name = NULL; char *dev_name = NULL;
struct stat st; struct stat st;
for (int i = 0; i < NUM_DEV_NAMES; i++) { for (int i = 0; i < NUM_DEV_NAMES; i++) {
char path[20]; char path[20];
snprintf(path, sizeof(path), "/dev/%s", DEF_DEV_NAMES[i]); snprintf(path, sizeof(path), "/dev/%s", DEF_DEV_NAMES[i]);
if (stat(path, &st) == 0) { if (stat(path, &st) == 0) {
dev_name = DEF_DEV_NAMES[i]; dev_name = DEF_DEV_NAMES[i];
break; break;
} }
} }
if (dev_name == NULL) { if (dev_name == NULL) {
perror("device not found"); perror("device not found");
exit(1); exit(1);
} }
return dev_name; return dev_name;
} }
int main() { int main() {
@ -61,23 +64,24 @@ int main() {
memcpy(&meidata.in_client_uuid,&mkhi_guid,sizeof(mkhi_guid)); memcpy(&meidata.in_client_uuid,&mkhi_guid,sizeof(mkhi_guid));
printf("Sending IOCTL_MEI_CONNECT_CLIENT .. "); printf("Sending IOCTL_MEI_CONNECT_CLIENT .. ");
// THE BIG BLOCKS OF COMMENTS ARE AN UGLY HACK, BUT I NEEDED THIS FIX LIKE YESERDAY.
int rc = ioctl(fd, IOCTL_MEI_CONNECT_CLIENT, &meidata); int rc = ioctl(fd, IOCTL_MEI_CONNECT_CLIENT, &meidata);
if (rc < 0) { //if (rc < 0) {
printf("error\n"); fflush(stdout); //printf("error\n"); fflush(stdout);
perror("ioctl"); //perror("ioctl");
close(fd); //close(fd);
return 1; //return 1;
} //}
printf("ok\n"); printf("ok\n");
printf("Writing disableme payload .. "); printf("Writing disableme payload .. ");
rc = write(fd, disable_cmd, sizeof(disable_cmd)); rc = write(fd, disable_cmd, sizeof(disable_cmd));
if (rc < 0) { //if (rc < 0) {
printf("error\n"); fflush(stdout); //printf("error\n"); fflush(stdout);
perror("write"); //perror("write");
close(fd); //close(fd);
return 1; //return 1;
} //}
fsync(fd); fsync(fd);
printf("written %d bytes\n",rc); printf("written %d bytes\n",rc);