bsd/kern/sysv_msg.c

7  * as defined in and that are subject to the Apple Public Source License
8  * Version 2.0 (the 'License'). You may not use this file except in
37  * Redistribution and use in source forms, with and without modification,
40  * Redistribution in binary form may occur without any restrictions.
47  * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
49  * is included in support of clause 2.2 (b) of the Apple Public License,
114 	int	msgmax,		/* max chars in a message */
116 		msgmnb,		/* max chars in a queue */
117 		msgtql,		/* max messages in system */
121 		MSGMAX,		/* = (MSGSSZ*MSGSEG) : max chars in a message */
123 		MSGMNB,		/* = 2048 : max chars in a queue */
124 		MSGTQL,		/* = 40 : max messages in system */
154 msqid_ds_kerneltouser32(struct user_msqid_ds *in, struct user32_msqid_ds *out)
156 	out->msg_perm	= in->msg_perm;
157 	out->msg_qnum	= in->msg_qnum;
158 	out->msg_cbytes	= in->msg_cbytes;	/* for ipcs */
159 	out->msg_qbytes	= in->msg_qbytes;
160 	out->msg_lspid	= in->msg_lspid;
161 	out->msg_lrpid	= in->msg_lrpid;
162 	out->msg_stime	= in->msg_stime;	/* XXX loss of range */
163 	out->msg_rtime	= in->msg_rtime;	/* XXX loss of range */
164 	out->msg_ctime	= in->msg_ctime;	/* XXX loss of range */
168 msqid_ds_kerneltouser64(struct user_msqid_ds *in, struct user64_msqid_ds *out)
170 	out->msg_perm	= in->msg_perm;
171 	out->msg_qnum	= in->msg_qnum;
172 	out->msg_cbytes	= in->msg_cbytes;	/* for ipcs */
173 	out->msg_qbytes	= in->msg_qbytes;
174 	out->msg_lspid	= in->msg_lspid;
175 	out->msg_lrpid	= in->msg_lrpid;
176 	out->msg_stime	= in->msg_stime;	/* XXX loss of range */
177 	out->msg_rtime	= in->msg_rtime;	/* XXX loss of range */
178 	out->msg_ctime	= in->msg_ctime;	/* XXX loss of range */
183  * this works because we copy fields in order from the end of the struct to
187 msqid_ds_user32tokernel(struct user32_msqid_ds *in, struct user_msqid_ds *out)
189 	out->msg_ctime	= in->msg_ctime;
190 	out->msg_rtime	= in->msg_rtime;
191 	out->msg_stime	= in->msg_stime;
192 	out->msg_lrpid	= in->msg_lrpid;
193 	out->msg_lspid	= in->msg_lspid;
194 	out->msg_qbytes	= in->msg_qbytes;
195 	out->msg_cbytes	= in->msg_cbytes;	/* for ipcs */
196 	out->msg_qnum	= in->msg_qnum;
197 	out->msg_perm	= in->msg_perm;
201 msqid_ds_user64tokernel(struct user64_msqid_ds *in, struct user_msqid_ds *out)
203 	out->msg_ctime	= in->msg_ctime;
204 	out->msg_rtime	= in->msg_rtime;
205 	out->msg_stime	= in->msg_stime;
206 	out->msg_lrpid	= in->msg_lrpid;
207 	out->msg_lspid	= in->msg_lspid;
208 	out->msg_qbytes	= in->msg_qbytes;
209 	out->msg_cbytes	= in->msg_cbytes;	/* for ipcs */
210 	out->msg_qnum	= in->msg_qnum;
211 	out->msg_perm	= in->msg_perm;
335  * Indirect parameters:	uap->which	msg call to invoke (index in array of msg calls)
456 		 * individual msghdrs.  Note: We need to do this in a
649 			 * while they are copying the message in/out.  We
787 	 * If we suffer resource starvation, we will sleep in this loop and
820 		 * If our message plus the messages already in the queue would
834 		 * message headers, since they are allocated and freed in
929 	 * Re-lock the user_msqid_ds in case we page-fault when copying in
972 	 * Copy in the message type.  For a 64 bit process, this is 64 bits,
1016 	 * Copy in the message body
1037 			printf("error %d copying in message segment\n", eval);
1081 	 * suffice in that case.  However, this hook may be required where
1486 	/* Copy in the command structure */
1491 	if (!IS_64BIT_PROCESS(p))	/* convert in place */
1562 			if (!IS_64BIT_PROCESS(p))	/* convert in place */