From: Stacey Son <sson@FreeBSD.org>

Add target_to_host_semid_ds() to convert target struct semid_ds to host
format for semctl(2) IPC_SET operations.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Mikael Urankar <mikael.urankar@gmail.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
 bsd-user/bsd-misc.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c
index 677cb49d27..2a7c0520ca 100644
--- a/bsd-user/bsd-misc.c
+++ b/bsd-user/bsd-misc.c
@@ -112,3 +112,21 @@ abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
     unlock_user(array, target_addr, 1);
     return 0;
 }
+
+abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
+        abi_ulong target_addr)
+{
+    struct target_semid_ds *target_sd;
+
+    if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) {
+        return -TARGET_EFAULT;
+    }
+    target_to_host_ipc_perm__locked(&host_sd->sem_perm, &target_sd->sem_perm);
+    /* sem_base is not used by kernel for IPC_STAT/IPC_SET */
+    /* host_sd->sem_base  = g2h_untagged(target_sd->sem_base); */
+    __get_user(host_sd->sem_nsems, &target_sd->sem_nsems);
+    __get_user(host_sd->sem_otime, &target_sd->sem_otime);
+    __get_user(host_sd->sem_ctime, &target_sd->sem_ctime);
+    unlock_user_struct(target_sd, target_addr, 0);
+    return 0;
+}

-- 
2.52.0

On 2/9/26 05:26, Warner Losh wrote:
> From: Stacey Son<sson@FreeBSD.org>
> 
> Add target_to_host_semid_ds() to convert target struct semid_ds to host
> format for semctl(2) IPC_SET operations.
> 
> Signed-off-by: Stacey Son<sson@FreeBSD.org>
> Signed-off-by: Mikael Urankar<mikael.urankar@gmail.com>
> Signed-off-by: Warner Losh<imp@bsdimp.com>
> ---
>   bsd-user/bsd-misc.c | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~