Start 1.33.0 development cycle
[oweals/busybox.git] / libbb / get_shell_name.c
1 /*
2  * Copyright 2011, Denys Vlasenko
3  *
4  * Licensed under GPLv2, see file LICENSE in this source tree.
5  */
6
7 //kbuild:lib-y += get_shell_name.o
8
9 #include "libbb.h"
10
11 const char* FAST_FUNC get_shell_name(void)
12 {
13         struct passwd *pw;
14         char *shell;
15
16         shell = getenv("SHELL");
17         if (shell && shell[0])
18                 return shell;
19
20         pw = getpwuid(getuid());
21         if (pw && pw->pw_shell && pw->pw_shell[0])
22                 return pw->pw_shell;
23
24         return DEFAULT_SHELL;
25 }