77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
#include <stdio.h>
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#include <syscall.h>
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#include <errno.h>
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#include <wait.h>
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#include <string.h>
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#include <unistd.h>
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void set_console(void) {
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int _stdin = syscall_open("/dev/null", 0, 0);
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int _stdout = syscall_open("/dev/ttyS0", 1, 0);
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int _stderr = syscall_open("/dev/ttyS0", 1, 0);
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if (_stdout < 0) {
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_stdout = syscall_open("/dev/null", 1, 0);
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_stderr = syscall_open("/dev/null", 1, 0);
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}
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(void)_stderr;
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(void)_stdin;
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}
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void set_hostname(void) {
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FILE * f = fopen("/etc/hostname", "r");
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if (!f) {
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/* set fallback hostname */
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sethostname("localhost", 4);
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} else {
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char tmp[128];
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fgets(tmp, 128, f);
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char * nl = strchr(tmp, '\n');
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if (nl) *nl = '\0';
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sethostname(tmp, strlen(tmp));
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}
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}
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int start_options(char * args[]) {
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int pid = syscall_fork();
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if (!pid) {
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char * _envp[] = {
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"LD_LIBRARY_PATH=/lib:/usr/lib",
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"PATH=/bin:/usr/bin",
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"USER=root",
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"HOME=/home/root",
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NULL,
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};
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syscall_execve(args[0], args, _envp);
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syscall_exit(0);
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} else {
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int pid = 0;
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do {
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pid = wait(NULL);
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} while ((pid > 0) || (pid == -1 && errno == EINTR));
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}
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return 0;
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}
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int main(int argc, char * argv[]) {
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set_console();
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set_hostname();
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if (argc > 1) {
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if (!strcmp(argv[1], "--vga")) {
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return start_options((char *[]){"/bin/terminal-vga","-l",NULL});
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} else if (!strcmp(argv[1], "--migrate")) {
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return start_options((char *[]){"/bin/migrate",NULL});
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} else if (!strcmp(argv[1], "--headless")) {
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return start_options((char *[]){"/bin/getty",NULL});
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} else {
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/* Pass it to the compositor... */
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return start_options((char *[]){"/bin/compositor","--",argv[1],NULL});
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}
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}
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return start_options((char *[]){"/bin/compositor",NULL});
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}
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