Add the target ABI definitions for System V semaphore and message queue
data structures, needed for semctl() and msgctl() syscall emulation.

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>
---
 bsd-user/syscall_defs.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/bsd-user/syscall_defs.h b/bsd-user/syscall_defs.h
index cc4b484f3a..92fec12acd 100644
--- a/bsd-user/syscall_defs.h
+++ b/bsd-user/syscall_defs.h
@@ -92,6 +92,39 @@ struct bsd_shm_regions {
     abi_long size;
 };
 
+/*
+ * sys/sem.h
+ */
+struct target_semid_ds {
+    struct target_ipc_perm sem_perm; /* operation permission struct */
+    abi_ptr     sem_base;   /* pointer to first semaphore in set */
+    abi_ushort  sem_nsems;  /* number of sems in set */
+    target_time_t   sem_otime;  /* last operation time */
+    target_time_t   sem_ctime;  /* times measured in secs */
+};
+
+/*
+ * sys/msg.h
+ */
+struct target_msqid_ds {
+    struct  target_ipc_perm msg_perm; /* msg queue permission bits */
+    abi_ptr     msg_first;  /* first message in the queue */
+    abi_ptr     msg_last;   /* last message in the queue */
+    abi_ulong   msg_cbytes; /* # of bytes in use on the queue */
+    abi_ulong   msg_qnum;   /* number of msgs in the queue */
+    abi_ulong   msg_qbytes; /* max # of bytes on the queue */
+    int32_t     msg_lspid;  /* pid of last msgsnd() */
+    int32_t     msg_lrpid;  /* pid of last msgrcv() */
+    target_time_t   msg_stime;  /* time of last msgsnd() */
+    target_time_t   msg_rtime;  /* time of last msgrcv() */
+    target_time_t   msg_ctime;  /* time of last msgctl() */
+};
+
+struct target_msgbuf {
+    abi_long    mtype;      /* message type */
+    char        mtext[1];   /* body of message */
+};
+
 /*
  *  sys/mman.h
  */

-- 
2.52.0

On Tue, Feb 24, 2026 at 5:42 PM Warner Losh <imp@bsdimp.com> wrote:
>
> +
> +/*
> + * sys/msg.h
> + */
> +struct target_msqid_ds {
> +    struct  target_ipc_perm msg_perm; /* msg queue permission bits */
> +    abi_ptr     msg_first;  /* first message in the queue */
> +    abi_ptr     msg_last;   /* last message in the queue */
> +    abi_ulong   msg_cbytes; /* # of bytes in use on the queue */
> +    abi_ulong   msg_qnum;   /* number of msgs in the queue */
> +    abi_ulong   msg_qbytes; /* max # of bytes on the queue */
> +    int32_t     msg_lspid;  /* pid of last msgsnd() */
> +    int32_t     msg_lrpid;  /* pid of last msgrcv() */
> +    target_time_t   msg_stime;  /* time of last msgsnd() */
> +    target_time_t   msg_rtime;  /* time of last msgrcv() */
> +    target_time_t   msg_ctime;  /* time of last msgctl() */
> +};
> +
> +struct target_msgbuf {

You might want to put

/*
 * sys/msgbuf.h
 */

before the struct target_msgbuf definition, just like it is done for
struct target_msqid_ds

On Tue, Feb 24, 2026 at 8:32 AM Gleb Popov <arrowd@freebsd.org> wrote:

> On Tue, Feb 24, 2026 at 5:42 PM Warner Losh <imp@bsdimp.com> wrote:
> >
> > +
> > +/*
> > + * sys/msg.h
> > + */
> > +struct target_msqid_ds {
> > +    struct  target_ipc_perm msg_perm; /* msg queue permission bits */
> > +    abi_ptr     msg_first;  /* first message in the queue */
> > +    abi_ptr     msg_last;   /* last message in the queue */
> > +    abi_ulong   msg_cbytes; /* # of bytes in use on the queue */
> > +    abi_ulong   msg_qnum;   /* number of msgs in the queue */
> > +    abi_ulong   msg_qbytes; /* max # of bytes on the queue */
> > +    int32_t     msg_lspid;  /* pid of last msgsnd() */
> > +    int32_t     msg_lrpid;  /* pid of last msgrcv() */
> > +    target_time_t   msg_stime;  /* time of last msgsnd() */
> > +    target_time_t   msg_rtime;  /* time of last msgrcv() */
> > +    target_time_t   msg_ctime;  /* time of last msgctl() */
> > +};
> > +
> > +struct target_msgbuf {
>
> You might want to put
>
> /*
>  * sys/msgbuf.h
>  */
>
> before the struct target_msgbuf definition, just like it is done for
> struct target_msqid_ds
>

good catch. This was missing in bsd-user's blitz branch, but I'll add it
there too. Since it's trivial, I'm not going to resend unless I need a v5.

Warner