add setdomainname syscall, fix getdomainname (previously a stub)

[musl] / src / misc / getdomainname.c

diff --git a/src/misc/getdomainname.c b/src/misc/getdomainname.c
index 7eb113d..59df566 100644 (file)
--- a/src/misc/getdomainname.c
+++ b/src/misc/getdomainname.c
@@ -1,9 +1,17 @@
+#define _GNU_SOURCE
 #include <unistd.h>
 #include <sys/utsname.h>
 #include <string.h>
+#include <errno.h>
 
 int getdomainname(char *name, size_t len)
 {
-       *name = 0;
+       struct utsname temp;
+       uname(&temp);
+       if (!len || strlen(temp.domainname) >= len) {
+               errno = EINVAL;
+               return -1;
+       }
+       strcpy(name, temp.domainname);
        return 0;
 }