On 2/6/26 03:26, Warner Losh wrote:
From: Stacey Son <[email protected]>
Add host_to_target_semid_ds() to convert host struct semid_ds to target
format for semctl(2) IPC_STAT operations.
Signed-off-by: Stacey Son <[email protected]>
Signed-off-by: Warner Losh <[email protected]>
---
bsd-user/bsd-misc.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c
index 581eb50355..f35f682aa4 100644
--- a/bsd-user/bsd-misc.c
+++ b/bsd-user/bsd-misc.c
@@ -134,3 +134,23 @@ abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
unlock_user_struct(target_sd, target_addr, 0);
return 0;
}
+
+abi_long host_to_target_semid_ds(abi_ulong target_addr,
+ struct semid_ds *host_sd)
+{
+ struct target_semid_ds *target_sd;
+
+ if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) {
+ return -TARGET_EFAULT;
+ }
+ host_to_target_ipc_perm__locked(&target_sd->sem_perm,
+ &host_sd->sem_perm);
+ /* sem_base is not used by kernel for IPC_STAT/IPC_SET */
+ /* target_sd->sem_base = h2g((void *)host_sd->sem_base); */
+ target_sd->sem_nsems = tswap16(host_sd->sem_nsems);
+ target_sd->sem_otime = tswapal(host_sd->sem_otime);
+ target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
+ unlock_user_struct(target_sd, target_addr, 1);
+
+ return 0;
+}
Probably should use __put_user instead, but this isn't wrong.
Reviewed-by: Richard Henderson <[email protected]>
r~
