Le 12/12/2022 à 18:34, Helge Deller a écrit :
Add suport to handle SOL_ALG packets via sendmsg() and recvmsg().
This allows emulated userspace to use encryption functionality.
Tested with the debian ell package with hppa guest on x86_64 host.
Signed-off-by: Helge Deller <[email protected]>
---
linux-user/syscall.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 71ae867024..a365903a3a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1871,6 +1871,14 @@ static inline abi_long target_to_host_cmsg(struct msghdr
*msgh,
__get_user(cred->pid, &target_cred->pid);
__get_user(cred->uid, &target_cred->uid);
__get_user(cred->gid, &target_cred->gid);
+ } else if (cmsg->cmsg_level == SOL_ALG) {
+ uint32_t *dst = (uint32_t *)data;
+
+ memcpy(dst, target_data, len);
+ /* fix endianess of first 32-bit word */
+ if (len >= sizeof(uint32_t)) {
+ *dst = tswap32(*dst);
+ }
} else {
qemu_log_mask(LOG_UNIMP, "Unsupported ancillary data: %d/%d\n",
cmsg->cmsg_level, cmsg->cmsg_type);
--
2.38.1
Reviewed-by: Laurent Vivier <[email protected]>
