Implement load_policy.

Note that this is a case where Android's tool isn't the same as the
usual tool. Ours takes an explicit file containing the policy to be
loaded. restorecon is at least command-line compatible, but the
implementation is all in Android's libselinux where there's a
selinux_android_restorecon function.

1 files changed, 41 insertions, 0 deletions

diff --git a/toys/pending/load_policy.c b/toys/pending/load_policy.c
new file mode 100644
index 00000000..ffe113e2
--- /dev/null
+++ b/toys/pending/load_policy.c
@@ -0,0 +1,41 @@
+/* runcon.c - Run command in specified security context
+ *
+ * Copyright 2015 The Android Open Source Project
+
+USE_LOAD_POLICY(NEWTOY(load_policy, "<1>1", TOYFLAG_USR|TOYFLAG_SBIN))
+
+config LOAD_POLICY
+  bool "load_policy"
+  depends on TOYBOX_SELINUX
+  default n
+  help
+    usage: load_policy FILE
+
+    Load the specified policy file.
+*/
+
+#define FOR_load_policy
+#include "toys.h"
+
+void load_policy_main(void)
+{
+  char *path = *toys.optargs;
+  char *policy_data = 0;
+  off_t policy_len;
+  int fd;
+
+  if ((fd = open(path, O_RDONLY)) != -1) {
+    policy_len = fdlength(fd);
+    policy_data = mmap(0, policy_len, PROT_READ, MAP_PRIVATE, fd, 0);
+    close(fd);
+  }
+
+  if (!policy_data) {
+    error_exit("Couldn't read %s: %s", path, strerror(errno));
+  }
+
+  if (security_load_policy(policy_data, policy_len) < 0)
+    error_exit("Couldn't load %s: %s", path, strerror(errno));
+
+  munmap(policy_data, policy_len);
+}