1 files changed, 25 insertions, 0 deletions

diff --git a/libbb/get_shell_name.c b/libbb/get_shell_name.c
new file mode 100644
index 000000000..c930afd94
--- /dev/null
+++ b/libbb/get_shell_name.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2011, Denys Vlasenko
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+
+//kbuild:lib-y += get_shell_name.o
+
+#include "libbb.h"
+
+const char *get_shell_name(void)
+{
+        struct passwd *pw;
+        char *shell;
+
+        shell = getenv("SHELL");
+        if (shell && shell[0])
+                return shell;
+
+        pw = getpwuid(getuid());
+        if (pw && pw->pw_shell && pw->pw_shell[0])
+                return pw->pw_shell;
+
+        return DEFAULT_SHELL;
+}