javalsai/lidm
1
0
Fork 0
mirror of https://github.com/javalsai/lidm.git synced 2025-07-03 14:25:03 +02:00
Code Issues Packages Projects Releases Wiki Activity

small changes

Browse Source
This commit is contained in:
javalsai 2024-08-07 00:07:44 +02:00
parent e745b27a68
commit 4de2720bed
Signed by: javalsai
SSH Key Fingerprint: SHA256:3G83yKhBUWVABVX/vPWH88xnK4+ptMtHkZGCRXD4Mk8
3 changed files with 22 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
include/chvt.h
View File

@ -2,14 +2,11 @@
#define _CHVTH_
#include <fcntl.h>
#include <stdio.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include <sys/ioctl.h>
#include <unistd.h>
#define KDGKBTYPE 0x4b33
#define VT_ACTIVATE 0x5606
#define VT_WAITACTIVE 0x5607
/**
* @brief change foreground virtual terminal to `n`
*

9
src/chvt.c
View File

@ -1,15 +1,18 @@
#include "chvt.h"
#include <stdio.h>
#include <chvt.h>
static char *vterms[] = {"/dev/tty", "/dev/tty0", "/dev/vc/0", "/dev/systty",
"/dev/console"};
int chvt(int n) {
fprintf(stderr, "activating vt %d\n", n);
char c = 0;
for (int i = 0; i < sizeof(vterms) / sizeof(vterms[0]); i++) {
int fd = open(vterms[i], O_RDWR);
if (fd >= 0 && isatty(fd) && ioctl(fd, KDGKBTYPE, &c) == 0 && c < 3) {
if (ioctl(fd, VT_ACTIVATE, n) < 0 || ioctl(fd, VT_WAITACTIVE, n) < 0) {
printf("Couldn't active vt %d\n", n);
fprintf(stderr, "Couldn't activate vt %d\n", n);
return -1;
}
return 0;
@ -17,6 +20,6 @@ int chvt(int n) {
close(fd);
}
printf("Couldn't get a file descriptor referring to the console.\n");
fprintf(stderr, "Couldn't get a file descriptor referring to the console.\n");
return -1;
}

20
src/main.c
View File

@ -1,3 +1,5 @@
#include <errno.h>
#include <limits.h>
#include <pwd.h>
#include <stdbool.h>
#include <sys/ioctl.h>
@ -10,17 +12,23 @@
#include <ui.h>
#include <users.h>
int chvt_char(char c) {
int i = c - '0';
if (i >= 0 && i <= 9) {
return chvt(i);
}
int chvt_str(char *str) {
char *err;
long i = strtol(str, &err, 10);
if (errno) {
perror("strol");
return -1;
}
// I'm not gonna elaborate on this....
if (i > INT_MAX || i < INT_MIN || *err)
return -1;
return chvt((int)i);
}
int main(int argc, char *argv[]) {
if (argc == 2)
chvt_char(argv[1][0]);
chvt_str(argv[1]);
struct config *config = parse_config("/etc/lidm.ini");
if (config == NULL) {