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linux-user: Implement SOL_ALG encryption support 

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 <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20221212173416.90590-1-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Helge Deller 2022-12-12 18:34:15 +01:00 committed by Laurent Vivier
parent 93cf7e6c4a
commit 27404b6c15
1 changed files with 8 additions and 0 deletions
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8
linux-user/syscall.c
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@ -1829,6 +1829,14 @@ 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);