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bsd-user: Add host_to_target_msqid_ds for msgctl(2)

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Add host_to_target_msqid_ds() to convert host struct msqid_ds to target
format for msgctl(2) IPC_STAT operations.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Brooks Davis <brooks@one-eyed-alien.net>
Signed-off-by: Sean Bruno <sbruno@FreeBSD.org>
Signed-off-by: Mikael Urankar <mikael.urankar@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
This commit is contained in:
Stacey Son
2026-02-02 14:56:58 -07:00
committed by Warner Losh
parent ee032d237f
commit e2ad4ba061
1 changed files with 27 additions and 0 deletions
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27
bsd-user/bsd-misc.c
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@@ -163,3 +163,30 @@ abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
return 0;
}
abi_long host_to_target_msqid_ds(abi_ulong target_addr,
struct msqid_ds *host_md)
{
struct target_msqid_ds *target_md;
if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) {
return -TARGET_EFAULT;
}
memset(target_md, 0, sizeof(struct target_msqid_ds));
host_to_target_ipc_perm__locked(&target_md->msg_perm,
&host_md->msg_perm);
/* msg_first and msg_last are not used by IPC_SET/IPC_STAT in kernel. */
__put_user(target_md->msg_cbytes, &host_md->msg_cbytes);
__put_user(target_md->msg_qnum, &host_md->msg_qnum);
__put_user(target_md->msg_qbytes, &host_md->msg_qbytes);
__put_user(target_md->msg_lspid, &host_md->msg_lspid);
__put_user(target_md->msg_lrpid, &host_md->msg_lrpid);
__put_user(target_md->msg_stime, &host_md->msg_stime);
__put_user(target_md->msg_rtime, &host_md->msg_rtime);
__put_user(target_md->msg_ctime, &host_md->msg_ctime);
unlock_user_struct(target_md, target_addr, 1);
return 0;
}