[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PULL 3/6] linux-user: Add support for setsockopt() option
From: |
Laurent Vivier |
Subject: |
[Qemu-devel] [PULL 3/6] linux-user: Add support for setsockopt() option SOL_ALG |
Date: |
Wed, 26 Jun 2019 14:11:36 +0200 |
From: Yunqiang Su <address@hidden>
Add support for options SOL_ALG of the syscall setsockopt(). This
option is used in relation to Linux kernel Crypto API, and allows
a user to set additional information for the cipher operation via
syscall setsockopt(). The field "optname" must be one of the
following:
- ALG_SET_KEY – seting the key
- ALG_SET_AEAD_AUTHSIZE – set the authentication tag size
SOL_ALG is relatively newer setsockopt() option. Therefore, the
code that handles SOL_ALG is enclosed in "ifdef" so that the build
does not fail for older kernels that do not contain support for
SOL_ALG. "ifdef" also contains check if ALG_SET_KEY and
ALG_SET_AEAD_AUTHSIZE are defined.
Signed-off-by: Yunqiang Su <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
Reviewed-by: Laurent Vivier <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/syscall.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e942049cb0da..ed1c9b0033be 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -102,6 +102,7 @@
#include <linux/blkpg.h>
#include <netpacket/packet.h>
#include <linux/netlink.h>
+#include <linux/if_alg.h>
#include "linux_loop.h"
#include "uname.h"
@@ -1941,6 +1942,36 @@ static abi_long do_setsockopt(int sockfd, int level, int
optname,
goto unimplemented;
}
break;
+#if defined(SOL_ALG) && defined(ALG_SET_KEY) && defined(ALG_SET_AEAD_AUTHSIZE)
+ case SOL_ALG:
+ switch (optname) {
+ case ALG_SET_KEY:
+ {
+ char *alg_key = g_malloc(optlen);
+
+ if (!alg_key) {
+ return -TARGET_ENOMEM;
+ }
+ if (copy_from_user(alg_key, optval_addr, optlen)) {
+ g_free(alg_key);
+ return -TARGET_EFAULT;
+ }
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ alg_key, optlen));
+ g_free(alg_key);
+ break;
+ }
+ case ALG_SET_AEAD_AUTHSIZE:
+ {
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ NULL, optlen));
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
+#endif
case TARGET_SOL_SOCKET:
switch (optname) {
case TARGET_SO_RCVTIMEO:
--
2.21.0
- [Qemu-devel] [PULL 0/6] Linux user for 4.1 patches, Laurent Vivier, 2019/06/26
- [Qemu-devel] [PULL 5/6] linux-user: update PPC64 HWCAP2 feature list, Laurent Vivier, 2019/06/26
- [Qemu-devel] [PULL 6/6] linux-user: set default PPC64 CPU, Laurent Vivier, 2019/06/26
- [Qemu-devel] [PULL 1/6] util/path: Do not cache all filenames at startup, Laurent Vivier, 2019/06/26
- [Qemu-devel] [PULL 3/6] linux-user: Add support for setsockopt() option SOL_ALG,
Laurent Vivier <=
- [Qemu-devel] [PULL 4/6] linux-user: Add support for setsockopt() options IPV6_<ADD|DROP>_MEMBERSHIP, Laurent Vivier, 2019/06/26
- [Qemu-devel] [PULL 2/6] linux-user: emulate msgsnd(), msgrcv() and semtimedop(), Laurent Vivier, 2019/06/26