From 96369d6f94358ad060eca95b92b0d2b0b80d44c6 Mon Sep 17 00:00:00 2001
From: Harshit-Dhanwalkar <harshitpd1729@gmail.com>
Date: Sun, 21 Jun 2026 19:15:08 +0530
Subject: [PATCH] Add nl_srterror

---
 C/lib/nl_errno.c | 15 +++++++++------
 C/lib/nl_errno.h |  2 ++
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/C/lib/nl_errno.c b/C/lib/nl_errno.c
index 099f2b9..2e12a73 100644
--- a/C/lib/nl_errno.c
+++ b/C/lib/nl_errno.c
@@ -1,5 +1,6 @@
 #include "nl_errno.h"
 #include "nl_syscall.h"
+
 #include <stddef.h>
 
 int errno = 0;
@@ -24,14 +25,16 @@ static const struct {
     {28, "No space left on device"}, {32, "Broken pipe"},
     {110, "Connection timed out"},   {0, (const char *)0}};
 
-void nl_perror(const char *msg) {
-  const char *estr = "Unknown error";
+const char *nl_strerror(int e) {
   for (int i = 0; _errtab[i].msg; i++) {
-    if (_errtab[i].code == errno) {
-      estr = _errtab[i].msg;
-      break;
-    }
+    if (_errtab[i].code == e)
+      return _errtab[i].msg;
   }
+  return "Unknown error";
+}
+
+void nl_perror(const char *msg) {
+  const char *estr = nl_strerror(errno);
   if (msg && msg[0]) {
     _ewrite(msg, _slen(msg));
     _ewrite(": ", 2);
diff --git a/C/lib/nl_errno.h b/C/lib/nl_errno.h
index aa16e7f..7f0068a 100644
--- a/C/lib/nl_errno.h
+++ b/C/lib/nl_errno.h
@@ -5,8 +5,10 @@
 
 extern int errno;
 
+const char *nl_strerror(int err);
 void nl_perror(const char *msg);
 
 #define perror(msg) nl_perror(msg)
+#define strerror(e) nl_strerror(e)
 
 #endif