[The context here is FreeBSD head -r341836 based and ports head -r488859 based.]
/usr/include/sys/msgbuf.h has:
struct msgbuf {
char *msg_ptr; /* pointer to buffer */
#define MSG_MAGIC 0x063062
u_int msg_magic;
u_int msg_size; /* size of buffer area */
u_int msg_wseq; /* write sequence number */
u_int msg_rseq; /* read sequence number */
u_int msg_cksum; /* checksum of contents */
u_int msg_seqmod; /* range for sequence numbers */
int msg_lastpri; /* saved priority value */
u_int msg_flags;
#define MSGBUF_NEEDNL 0x01 /* set when newline needed */
struct mtx msg_lock; /* mutex to protect the buffer */
};
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-4ef7d07/bsd-user/syscall_defs.h
has:
struct target_msgbuf {
abi_long mtype; /* message type */
char mtext[1]; /* body of message */
};
I'm guessing here that target_msgbuf is not meant to be a match to
msgbuf . Either way, there is no point in comparing sizes or field
offsets as things are now.
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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