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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/security/keys/compat.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/security/keys/compat.c')
-rw-r--r--kernel/security/keys/compat.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/kernel/security/keys/compat.c b/kernel/security/keys/compat.c
new file mode 100644
index 000000000..25430a3aa
--- /dev/null
+++ b/kernel/security/keys/compat.c
@@ -0,0 +1,138 @@
+/* 32-bit compatibility syscall for 64-bit systems
+ *
+ * Copyright (C) 2004-5 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/syscalls.h>
+#include <linux/keyctl.h>
+#include <linux/compat.h>
+#include <linux/slab.h>
+#include "internal.h"
+
+/*
+ * Instantiate a key with the specified compatibility multipart payload and
+ * link the key into the destination keyring if one is given.
+ *
+ * The caller must have the appropriate instantiation permit set for this to
+ * work (see keyctl_assume_authority). No other permissions are required.
+ *
+ * If successful, 0 will be returned.
+ */
+static long compat_keyctl_instantiate_key_iov(
+ key_serial_t id,
+ const struct compat_iovec __user *_payload_iov,
+ unsigned ioc,
+ key_serial_t ringid)
+{
+ struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
+ struct iov_iter from;
+ long ret;
+
+ if (!_payload_iov)
+ ioc = 0;
+
+ ret = compat_import_iovec(WRITE, _payload_iov, ioc,
+ ARRAY_SIZE(iovstack), &iov,
+ &from);
+ if (ret < 0)
+ return ret;
+
+ ret = keyctl_instantiate_key_common(id, &from, ringid);
+ kfree(iov);
+ return ret;
+}
+
+/*
+ * The key control system call, 32-bit compatibility version for 64-bit archs
+ *
+ * This should only be called if the 64-bit arch uses weird pointers in 32-bit
+ * mode or doesn't guarantee that the top 32-bits of the argument registers on
+ * taking a 32-bit syscall are zero. If you can, you should call sys_keyctl()
+ * directly.
+ */
+COMPAT_SYSCALL_DEFINE5(keyctl, u32, option,
+ u32, arg2, u32, arg3, u32, arg4, u32, arg5)
+{
+ switch (option) {
+ case KEYCTL_GET_KEYRING_ID:
+ return keyctl_get_keyring_ID(arg2, arg3);
+
+ case KEYCTL_JOIN_SESSION_KEYRING:
+ return keyctl_join_session_keyring(compat_ptr(arg2));
+
+ case KEYCTL_UPDATE:
+ return keyctl_update_key(arg2, compat_ptr(arg3), arg4);
+
+ case KEYCTL_REVOKE:
+ return keyctl_revoke_key(arg2);
+
+ case KEYCTL_DESCRIBE:
+ return keyctl_describe_key(arg2, compat_ptr(arg3), arg4);
+
+ case KEYCTL_CLEAR:
+ return keyctl_keyring_clear(arg2);
+
+ case KEYCTL_LINK:
+ return keyctl_keyring_link(arg2, arg3);
+
+ case KEYCTL_UNLINK:
+ return keyctl_keyring_unlink(arg2, arg3);
+
+ case KEYCTL_SEARCH:
+ return keyctl_keyring_search(arg2, compat_ptr(arg3),
+ compat_ptr(arg4), arg5);
+
+ case KEYCTL_READ:
+ return keyctl_read_key(arg2, compat_ptr(arg3), arg4);
+
+ case KEYCTL_CHOWN:
+ return keyctl_chown_key(arg2, arg3, arg4);
+
+ case KEYCTL_SETPERM:
+ return keyctl_setperm_key(arg2, arg3);
+
+ case KEYCTL_INSTANTIATE:
+ return keyctl_instantiate_key(arg2, compat_ptr(arg3), arg4,
+ arg5);
+
+ case KEYCTL_NEGATE:
+ return keyctl_negate_key(arg2, arg3, arg4);
+
+ case KEYCTL_SET_REQKEY_KEYRING:
+ return keyctl_set_reqkey_keyring(arg2);
+
+ case KEYCTL_SET_TIMEOUT:
+ return keyctl_set_timeout(arg2, arg3);
+
+ case KEYCTL_ASSUME_AUTHORITY:
+ return keyctl_assume_authority(arg2);
+
+ case KEYCTL_GET_SECURITY:
+ return keyctl_get_security(arg2, compat_ptr(arg3), arg4);
+
+ case KEYCTL_SESSION_TO_PARENT:
+ return keyctl_session_to_parent();
+
+ case KEYCTL_REJECT:
+ return keyctl_reject_key(arg2, arg3, arg4, arg5);
+
+ case KEYCTL_INSTANTIATE_IOV:
+ return compat_keyctl_instantiate_key_iov(
+ arg2, compat_ptr(arg3), arg4, arg5);
+
+ case KEYCTL_INVALIDATE:
+ return keyctl_invalidate_key(arg2);
+
+ case KEYCTL_GET_PERSISTENT:
+ return keyctl_get_persistent(arg2, arg3);
+
+ default:
+ return -EOPNOTSUPP;
+ }
+}