From b2ce1b6a8e7088328c27a56fc8e5c3b19f175073 Mon Sep 17 00:00:00 2001 From: Stacey Son Date: Mon, 2 Feb 2026 14:52:08 -0700 Subject: [PATCH] bsd-user: Add target_to_host_semid_ds for semctl(2) 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 Signed-off-by: Mikael Urankar Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- 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 65fd7b72e5..941f30d547 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -98,3 +98,21 @@ 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; +}