From a353a7cf3983cd9465f59f1f92d35c564f2fd4fa Mon Sep 17 00:00:00 2001
From: =?utf8?q?Janosch=20Gr=C3=A4f?= <janosch@majestix.majestix>
Date: Sat, 6 Dec 2008 19:11:32 +0100
Subject: [PATCH] stdlibc/stdio: check stream in fgets; set EOF flag in fgetc

---
 apps/lib/stdlibc/stdio.c | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/apps/lib/stdlibc/stdio.c b/apps/lib/stdlibc/stdio.c
index e1b7f04..8f2269b 100644
--- a/apps/lib/stdlibc/stdio.c
+++ b/apps/lib/stdlibc/stdio.c
@@ -263,18 +263,24 @@ size_t _fwrite(const void *ptr,size_t size,FILE *stream) {
  */
 char *fgets(char *s,int n,FILE *stream) {
   int i,chr;
-  for (i=0;i<n-1;i++) {
-    chr = fgetc(stream);
-    if (chr==EOF) break;
-    else s[i] = chr;
-    if (errno>0) {
-      stream->error = errno;
-      return NULL;
+  if (check_stream(stream)) {
+    for (i=0;i<n-1;i++) {
+      chr = fgetc(stream);
+      if (chr==EOF) break;
+      else s[i] = chr;
+      if (errno>0) {
+        stream->error = errno;
+        return NULL;
+      }
+      if (s[i]==0 || s[i]=='\n') break;
     }
-    if (s[i]==0 || s[i]=='\n') break;
+    s[i] = 0;
+    return s;
+  }
+  else {
+    errno = EBADF;
+    return NULL;
   }
-  s[i] = 0;
-  return s;
 }
 
 /**
-- 
2.11.4.GIT