4 files changed, 55 insertions, 2 deletions

diff --git a/configs/mingw32_defconfig b/configs/mingw32_defconfig
index a29cc164a..571aa112c 100644
--- a/configs/mingw32_defconfig
+++ b/configs/mingw32_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Busybox version: 1.31.0.git
-# Wed Mar  6 09:32:59 2019
+# Thu Mar  7 14:31:51 2019
 #
 CONFIG_HAVE_DOT_CONFIG=y
 # CONFIG_PLATFORM_POSIX is not set
@@ -550,6 +550,7 @@ CONFIG_FEATURE_DEFAULT_PASSWD_ALGO=""
 # CONFIG_FEATURE_SU_CHECKS_SHELLS is not set
 # CONFIG_FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY is not set
 # CONFIG_SULOGIN is not set
+CONFIG_SUW32=y
 # CONFIG_VLOCK is not set
 
 #
diff --git a/configs/mingw64_defconfig b/configs/mingw64_defconfig
index 3d6102f0a..47bfc994a 100644
--- a/configs/mingw64_defconfig
+++ b/configs/mingw64_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Busybox version: 1.31.0.git
-# Wed Mar  6 09:32:59 2019
+# Thu Mar  7 14:31:51 2019
 #
 CONFIG_HAVE_DOT_CONFIG=y
 # CONFIG_PLATFORM_POSIX is not set
@@ -550,6 +550,7 @@ CONFIG_FEATURE_DEFAULT_PASSWD_ALGO=""
 # CONFIG_FEATURE_SU_CHECKS_SHELLS is not set
 # CONFIG_FEATURE_SU_BLANK_PW_NEEDS_SECURE_TTY is not set
 # CONFIG_SULOGIN is not set
+CONFIG_SUW32=y
 # CONFIG_VLOCK is not set
 
 #
diff --git a/loginutils/su.c b/loginutils/su.c
index 41291ea8f..2e1b309b0 100644
--- a/loginutils/su.c
+++ b/loginutils/su.c
@@ -8,6 +8,7 @@
 //config:       bool "su (19 kb)"
 //config:       default y
 //config:       select FEATURE_SYSLOG
+//config:       depends on PLATFORM_POSIX
 //config:       help
 //config:       su is used to become another user during a login session.
 //config:       Invoked without a username, su defaults to becoming the super user.
diff --git a/loginutils/suw32.c b/loginutils/suw32.c
new file mode 100644
index 000000000..3aa478f33
--- /dev/null
+++ b/loginutils/suw32.c
@@ -0,0 +1,50 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini su implementation for busybox-w32
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config SUW32
+//config:       bool "su for Microsoft Windows"
+//config:       default y
+//config:       depends on PLATFORM_MINGW32 && ASH
+//config:       help
+//config:       su runs a shell with elevated privileges.
+
+//applet:IF_SUW32(APPLET_ODDNAME(su, suw32, BB_DIR_BIN, BB_SUID_DROP, suw32))
+
+//kbuild:lib-$(CONFIG_SUW32) += suw32.o
+
+//usage:#define suw32_trivial_usage
+//usage:       "[-c \"CMD\"]"
+//usage:#define suw32_full_usage "\n\n"
+//usage:       "Run shell with elevated privileges\n"
+//usage:     "\n    -c CMD  Command to pass to 'sh -c'"
+
+#include "libbb.h"
+
+int suw32_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int suw32_main(int argc UNUSED_PARAM, char **argv)
+{
+        char *opt_command = NULL;
+        SHELLEXECUTEINFO info;
+
+        getopt32(argv, "c:", &opt_command);
+        if (argv[optind])
+                bb_show_usage();
+
+        memset(&info, 0, sizeof(SHELLEXECUTEINFO));
+        info.cbSize = sizeof(SHELLEXECUTEINFO);
+        /* info.fMask = SEE_MASK_DEFAULT; */
+        /* info.hwnd = NULL; */
+        info.lpVerb = "runas";
+        info.lpFile = bb_busybox_exec_path;
+        if (opt_command)
+                info.lpParameters = xasprintf("ash -s -c \"%s\"", opt_command);
+        else
+                info.lpParameters = "ash";
+        /* info.lpDirectory = NULL; */
+        info.nShow = SW_SHOWNORMAL;
+
+        return !ShellExecuteEx(&info);
+}