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 <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>
Stacey Son committed
Feb 2, 2026 at 14:52 UTC
b2ce1b6a8e7088328c27a56fc8e5c3b19f175073
1 file changed
+18
bsd-user/bsd-misc.c
+18
@@ -98,3 +98,21 @@ abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
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unlock_user(array, target_addr, 1);
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return 0;
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}
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+
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+abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
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+ abi_ulong target_addr)
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+{
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+ struct target_semid_ds *target_sd;
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+
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+ if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) {
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+ return -TARGET_EFAULT;
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+ }
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+ target_to_host_ipc_perm__locked(&host_sd->sem_perm, &target_sd->sem_perm);
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+ /* sem_base is not used by kernel for IPC_STAT/IPC_SET */
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+ /* host_sd->sem_base = g2h_untagged(target_sd->sem_base); */
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+ __get_user(host_sd->sem_nsems, &target_sd->sem_nsems);
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+ __get_user(host_sd->sem_otime, &target_sd->sem_otime);
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+ __get_user(host_sd->sem_ctime, &target_sd->sem_ctime);
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+ unlock_user_struct(target_sd, target_addr, 0);
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+ return 0;
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+}