4 * $DragonFly: src/sys/sys/sysmsg.h,v 1.9 2006/05/21 03:43:47 dillon Exp $
10 #ifndef _SYS_MSGPORT_H_
11 #include <sys/msgport.h>
16 #ifndef _SYS_CALLOUT_H_
17 #include <sys/callout.h> /* for struct callout */
20 #include <sys/time.h> /* for struct timespec */
24 * The sysmsg holds the kernelland version of a system call.
25 * It typically preceeds the usrmsg and syscall arguments in sysunion
26 * (see sys/sysunion.h). Note that msgq field is used by the governing
27 * process to record a system call that returns EASYNC in order to be able
28 * to properly abort and/or wait on it in exit1(). This is different from
29 * any localized queueing of the LWKT message that the syscall itself might
36 void (*copyout)(union sysunion *sysun);
37 TAILQ_ENTRY(sysmsg) msgq;
51 struct sysmsg *sysmsg_wait(struct lwp *lp, struct sysmsg *sysmsg, int nonblock);
52 void sysmsg_rundown(struct lwp *lp, int doabort);
57 * The usrmsg holds the userland version of the system call message which
58 * typically preceeds the original user arguments. This message structure
59 * is typically loaded by the copyin() and adjusted prior to copyout(), but
60 * not used in the nominal running of the system call.
67 typedef struct sysmsg *sysmsg_t;
68 #define sysmsg_copyout sysmsg.copyout
69 #define sysmsg_lmsg sysmsg.lmsg
70 #define sysmsg_result sysmsg.lmsg.u.ms_result
71 #define sysmsg_lresult sysmsg.lmsg.u.ms_lresult
72 #define sysmsg_resultp sysmsg.lmsg.u.ms_resultp
73 #define sysmsg_fds sysmsg.lmsg.u.ms_fds
74 #define sysmsg_offset sysmsg.lmsg.u.ms_offset
75 #define sysmsg_result32 sysmsg.lmsg.u.ms_result32
76 #define sysmsg_result64 sysmsg.lmsg.u.ms_result64
79 typedef union usrmsg *usrmsg_t;
80 #define usrmsg_result usrmsg.umsg.u.ms_result
81 #define usrmsg_lresult usrmsg.umsg.u.ms_lresult
82 #define usrmsg_resultp usrmsg.umsg.u.ms_resultp
83 #define usrmsg_fds usrmsg.umsg.u.ms_fds
84 #define usrmsg_offset usrmsg.umsg.u.ms_offset
85 #define usrmsg_result32 usrmsg.umsg.u.ms_result32
86 #define usrmsg_result64 usrmsg.umsg.u.ms_result64