Make init execute files from /

sys/amd64/syscall.c

@@ -42,11 +42,8 @@ static void sys_sigret(void);
 
 __attribute__((noreturn)) void amd64_syscall_yield_stopped(void);
 
-uint64_t syscall_last_time = 0;
-uint64_t syscall_count = 0;
-
 intptr_t amd64_syscall(uintptr_t rdi, uintptr_t rsi, uintptr_t rdx, uintptr_t rcx, uintptr_t r10, uintptr_t rax) {
-    ++syscall_count;
+    asm volatile ("cli");
     switch (rax) {
     case SYSCALL_NR_READ:
         return sys_read((int) rdi, (void *) rsi, (size_t) rdx);

usr/init.c

@@ -328,6 +328,32 @@ static int cmd_exec(const char *line) {
         }
     }
 
+    // Try to execute binary from /
+    struct stat st;
+    char path[64] = "/";
+    strcat(path, cmd);
+    if (stat(path, &st) == 0) {
+        const char *argp[] = {
+            e, NULL
+        };
+
+        int pid = fork();
+
+        switch (pid) {
+        case -1:
+            perror("fork()");
+            return -1;
+        case 0:
+            if (execve(path, argp, NULL) != 0) {
+                perror("execve()");
+            }
+            exit(-1);
+        default:
+            // TODO: waitpid
+            return 0;
+        }
+    }
+
     printf("%s: Unknown command\n", cmd);
     return -1;
 }