* netlink_crypto.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* defs.h (decode_netlink_crypto): New prototype.
* netlink.c (netlink_decoders): Add NETLINK_CRYPTO.
* NEWS: Mention this.
---
Makefile.am | 1 +
NEWS | 1 +
defs.h | 1 +
netlink.c | 3 +++
netlink_crypto.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 86 insertions(+)
create mode 100644 netlink_crypto.c
diff --git a/Makefile.am b/Makefile.am
index 8411f26..5d365e2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -183,6 +183,7 @@ strace_SOURCES = \
net.c \
netlink.c \
netlink.h \
+ netlink_crypto.c \
netlink_sock_diag.h \
netlink_inet_diag.c \
netlink_netlink_diag.c \
diff --git a/NEWS b/NEWS
index 88229fb..9592753 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,7 @@ Noteworthy changes in release ?.?? (????-??-??)
* Implemented NETLINK_SELINUX protocol specific decoding.
* Implemented decoding of netlink message ack flags.
* Implemented decoding of nlmsgerr netlink attributes.
+ * Implemented basic protocol specific decoding of NETLINK_CRYPTO.
* Updated lists of BPF_*, KEY_*, RWF_*, SCM_*, SO_*, and *_MAGIC constants.
* Added decoding of arch_prctl syscall on x86.
diff --git a/defs.h b/defs.h
index 4048915..539afa2 100644
--- a/defs.h
+++ b/defs.h
@@ -711,6 +711,7 @@ typedef bool (*netlink_decoder_t)(struct tcb *, const
struct nlmsghdr *,
extern bool \
decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
kernel_ulong_t addr, unsigned int len)
+DECL_NETLINK(crypto);
DECL_NETLINK(selinux);
DECL_NETLINK(sock_diag);
diff --git a/netlink.c b/netlink.c
index b9ad7d2..947e52d 100644
--- a/netlink.c
+++ b/netlink.c
@@ -380,6 +380,9 @@ decode_nlmsgerr(struct tcb *const tcp,
}
static const netlink_decoder_t netlink_decoders[] = {
+#ifdef HAVE_LINUX_CRYPTOUSER_H
+ [NETLINK_CRYPTO] = decode_netlink_crypto,
+#endif
[NETLINK_SELINUX] = decode_netlink_selinux,
[NETLINK_SOCK_DIAG] = decode_netlink_sock_diag
};
diff --git a/netlink_crypto.c b/netlink_crypto.c
new file mode 100644
index 0000000..cc573ff
--- /dev/null
+++ b/netlink_crypto.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingp...@gmail.com>
+ * Copyright (c) 2017 The strace developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "defs.h"
+
+#ifdef HAVE_LINUX_CRYPTOUSER_H
+
+# include "netlink.h"
+# include "nlattr.h"
+# include "print_fields.h"
+
+# include <linux/cryptouser.h>
+
+static void
+decode_crypto_user_alg(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len)
+{
+ struct crypto_user_alg alg;
+
+ if (len < sizeof(alg))
+ printstrn(tcp, addr, len);
+ else if (!umove_or_printaddr(tcp, addr, &alg)) {
+ PRINT_FIELD_CSTRING("{", alg, cru_name);
+ PRINT_FIELD_CSTRING(", ", alg, cru_driver_name);
+ PRINT_FIELD_CSTRING(", ", alg, cru_module_name);
+ PRINT_FIELD_X(", ", alg, cru_type);
+ PRINT_FIELD_X(", ", alg, cru_mask);
+ PRINT_FIELD_U(", ", alg, cru_refcnt);
+ PRINT_FIELD_X(", ", alg, cru_flags);
+ tprints("}");
+ }
+}
+
+bool
+decode_netlink_crypto(struct tcb *const tcp,
+ const struct nlmsghdr *const nlmsghdr,
+ const kernel_ulong_t addr,
+ const unsigned int len)
+{
+ switch (nlmsghdr->nlmsg_type) {
+ case CRYPTO_MSG_NEWALG:
+ case CRYPTO_MSG_DELALG:
+ case CRYPTO_MSG_UPDATEALG:
+ case CRYPTO_MSG_GETALG:
+ decode_crypto_user_alg(tcp, addr, len);
+ break;
+ default:
+ return false;
+ }
+
+ return true;
+}
+
+#endif /* HAVE_LINUX_CRYPTOUSER_H */
--
2.7.4
------------------------------------------------------------------------------
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