1 files changed, 42 insertions, 0 deletions
diff --git a/usr.sbin/init/main.c b/usr.sbin/init/main.c
index e1ee4d8..12bb98c 100644
--- a/usr.sbin/init/main.c
+++ b/usr.sbin/init/main.c
@@ -29,11 +29,49 @@
 
 #include <sys/spawn.h>
 #include <stddef.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+#define log_trace(fmt, ...) printf("[init]: " fmt, ##__VA_ARGS__)
+#define log_error(fmt, ...) printf("[error]: " fmt, ##__VA_ARGS__)
 
 #define SHELL_PATH   "/usr/bin/osh"
 #define LOGIN_PATH   "/usr/bin/login"
 #define INIT_RC_PATH "/usr/rc/init.rc"
 
+static void
+init_hostname(void)
+{
+    char hostname[128];
+    size_t len;
+    FILE *fp;
+
+    fp = fopen("/etc/hostname", "r");
+    if (fp == NULL) {
+        log_error("[init]: error opening /etc/hostname\n");
+        return;
+    }
+
+    len = fread(hostname, sizeof(char), sizeof(hostname), fp);
+    if (len == 0) {
+        log_error("[init]: error reading /etc/hostname\n");
+        fclose(fp);
+        return;
+    }
+
+    hostname[len - 1] = '\0';
+    if (sethostname(hostname, len) < 0) {
+        log_error("[init]: error setting hostname\n");
+        log_error("[init]: tried to set %s (len=%d)\n", hostname, len);
+        fclose(fp);
+        return;
+    }
+
+    log_trace("hostname -> %s\n", hostname);
+    fclose(fp);
+}
+
 int
 main(int argc, char **argv)
 {
@@ -41,7 +79,11 @@ main(int argc, char **argv)
     char *start_argv[] = { SHELL_PATH, INIT_RC_PATH, NULL };
     char *envp[] = { NULL };
 
+    /* Initialize the system hostname */
+    init_hostname();
+
     /* Start the init.rc */
+    log_trace("init.rc up\n");
     spawn(SHELL_PATH, start_argv, envp, 0);
     start_argv[1] = NULL;