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bsd-user: Add target_to_host_semid_ds for semctl(2)

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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>
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 14:52:08 -07:00
committed by Warner Losh
parent 685c763348
commit b2ce1b6a8e
1 changed files with 18 additions and 0 deletions
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18
bsd-user/bsd-misc.c
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@@ -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;
}