integrate dietlibc/stdio per default for cdrom and disk only installs

1 files changed, 37 insertions, 0 deletions

diff --git a/mdk-stage1/dietlibc/lib/putenv.c b/mdk-stage1/dietlibc/lib/putenv.c
new file mode 100644
index 000000000..274b16b0e
--- /dev/null
+++ b/mdk-stage1/dietlibc/lib/putenv.c
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include <string.h>
+
+int putenv(const char *string) {
+  int len;
+  int envc;
+  char *tmp;
+  const char **ep;
+  char **newenv;
+  static char **origenv=0;
+  if (!origenv) origenv=environ;
+  if (!(tmp=strchr(string,'=')))
+    len=strlen(string);
+  else
+    len=tmp-string+1;
+  for (envc=0, ep=(const char**)environ; *ep; ++ep) {
+    if (!memcmp(string,*ep,len)) { /* found */
+      if (!tmp) {
+	for (; ep[1]; ++ep) ep[0]=ep[1];
+	ep[0]=0;
+	return 0;
+      }
+      *ep=string;
+      return 0;
+    }
+    ++envc;
+  }
+  if (tmp) {
+    newenv=(char**)malloc((envc+2)*sizeof(char*));
+    if (!newenv) return -1;
+    newenv[0]=(char*)string;
+    memcpy(newenv+1,environ,(envc+1)*sizeof(char*));
+    if (environ!=origenv) free(environ);
+    environ=newenv;
+  }
+  return 0;
+}