From b506d8fcc09819266facbac85f3c4052aa837641 Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Sat, 24 Apr 2021 13:32:26 +0300
Subject: [PATCH] os: use C.getlogin for os.loginname, instead of C.getlogin_r
 (C.getlogin_r absent on Android)

---
 vlib/os/os_nix.c.v | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/vlib/os/os_nix.c.v b/vlib/os/os_nix.c.v
index 303e3de2f3..9766779b6d 100644
--- a/vlib/os/os_nix.c.v
+++ b/vlib/os/os_nix.c.v
@@ -53,7 +53,8 @@ fn C.symlink(&char, &char) int
 
 fn C.gethostname(&char, int) int
 
-fn C.getlogin_r(&char, int) int
+// NB: not available on Android fn C.getlogin_r(&char, int) int
+fn C.getlogin() &char
 
 pub fn uname() Uname {
 	mut u := Uname{}
@@ -86,13 +87,9 @@ pub fn hostname() string {
 }
 
 pub fn loginname() string {
-	mut lgnname := ''
-	size := 256
-	mut buf := unsafe { &char(malloc(size)) }
-	if C.getlogin_r(buf, size) == 0 {
-		lgnname = unsafe { cstring_to_vstring(buf) }
-		unsafe { free(buf) }
-		return lgnname
+	x := C.getlogin()
+	if !isnil(x) {
+		return unsafe { cstring_to_vstring(x) }
 	}
 	return ''
 }