1 files changed, 33 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libcruft/getusershell.c b/mdk-stage1/dietlibc/libcruft/getusershell.c
new file mode 100644
index 000000000..4c99aa4d4
--- /dev/null
+++ b/mdk-stage1/dietlibc/libcruft/getusershell.c
@@ -0,0 +1,33 @@
+#define _BSD_SOURCE
+#include <unistd.h>
+#include <paths.h>
+#include <string.h>
+#include "parselib.h"
+
+static struct state __ps;
+
+void setusershell(void) {
+  __prepare_parse(_PATH_SHELLS,&__ps);
+}
+
+void endusershell(void) {
+  __end_parse(&__ps);
+}
+
+#define MAXSHELL 128
+
+char *getusershell(void) {
+  static char line[MAXSHELL+1];
+  size_t i;
+  if (!__ps.buffirst) setusershell();
+  if (!__ps.buffirst) goto error;
+  if (__ps.cur>=__ps.buflen) goto error;
+  i=__parse_1(&__ps,'\n');
+  if (i>=MAXSHELL) i=MAXSHELL-1;
+  memcpy(line,__ps.buffirst+__ps.cur,i);
+  line[i]=0;
+  __ps.cur+=i+1;
+  return line;
+error:
+  return 0;
+}