From: Yunqiang Su <y...@wavecomp.com> 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 <y...@wavecomp.com> Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com> Reviewed-by: Laurent Vivier <laur...@vivier.eu> --- linux-user/syscall.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f267ad0..d116287 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" @@ -1989,6 +1990,36 @@ 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: -- 2.7.4