Re: [PATCH 10/22] Implement shmid_ds conversion between host and target.

[Warner Losh]

On Sat, Aug 19, 2023 at 3:48 AM Karim Taha <kariem.taha2.7@gmail.com> wrote:

From: Stacey Son <sson@FreeBSD.org>

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
---
 bsd-user/bsd-mem.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

Reviewed-by: Warner Losh <imp@bsdimp.com>

diff --git a/bsd-user/bsd-mem.c b/bsd-user/bsd-mem.c
index e69250cc0d..4446c94725 100644
--- a/bsd-user/bsd-mem.c
+++ b/bsd-user/bsd-mem.c
@@ -77,3 +77,49 @@ abi_long host_to_target_ipc_perm(abi_ulong target_addr,
     return 0;
 }

+abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd,
+        abi_ulong target_addr)
+{
+    struct target_shmid_ds *target_sd;
+
+    if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) {
+        return -TARGET_EFAULT;
+    }
+    if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) {
+        return -TARGET_EFAULT;
+    }
+    __get_user(host_sd->shm_segsz, &target_sd->shm_segsz);
+    __get_user(host_sd->shm_lpid, &target_sd->shm_lpid);
+    __get_user(host_sd->shm_cpid, &target_sd->shm_cpid);
+    __get_user(host_sd->shm_nattch, &target_sd->shm_nattch);
+    __get_user(host_sd->shm_atime, &target_sd->shm_atime);
+    __get_user(host_sd->shm_dtime, &target_sd->shm_dtime);
+    __get_user(host_sd->shm_ctime, &target_sd->shm_ctime);
+    unlock_user_struct(target_sd, target_addr, 0);
+
+    return 0;
+}
+
+abi_long host_to_target_shmid_ds(abi_ulong target_addr,
+        struct shmid_ds *host_sd)
+{
+    struct target_shmid_ds *target_sd;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) {
+        return -TARGET_EFAULT;
+    }
+    __put_user(host_sd->shm_segsz, &target_sd->shm_segsz);
+    __put_user(host_sd->shm_lpid, &target_sd->shm_lpid);
+    __put_user(host_sd->shm_cpid, &target_sd->shm_cpid);
+    __put_user(host_sd->shm_nattch, &target_sd->shm_nattch);
+    __put_user(host_sd->shm_atime, &target_sd->shm_atime);
+    __put_user(host_sd->shm_dtime, &target_sd->shm_dtime);
+    __put_user(host_sd->shm_ctime, &target_sd->shm_ctime);
+    unlock_user_struct(target_sd, target_addr, 1);
+
+    return 0;
+}
+
--
2.40.0