8ccb12bb5a
. create signals-related struct message type to store sigset_t directly . create notify-specific message types, so the generic NOTIFY_ARG doesn't exist anymore . various related test expansions, improvements, fixes . add a few error-checks to sigismember() calls . rename kernel call specific signals fields to SYS_* Change-Id: I53c18999b5eaf0cfa0cb25f5330bee9e7ad2b478
279 lines
7.9 KiB
C
279 lines
7.9 KiB
C
#ifndef _IPC_H
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#define _IPC_H
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#include <minix/ipcconst.h>
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#include <minix/type.h>
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#include <minix/const.h>
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#include <sys/signal.h>
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/*==========================================================================*
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* Types relating to messages. *
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*==========================================================================*/
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#define M1 1
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#define M3 3
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#define M4 4
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#define M3_STRING 44 /* legacy m3_ca1 size (must not be changed) */
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#define M3_LONG_STRING 44 /* current m3_ca1 size (may be increased) */
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typedef struct {int m1i1, m1i2, m1i3; char *m1p1, *m1p2, *m1p3, *m1p4;} mess_1;
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typedef struct {int m2i1, m2i2, m2i3; long m2l1, m2l2; char *m2p1;
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short m2s1; sigset_t sigset; } mess_2;
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typedef struct {endpoint_t ep; int sig; u32_t flags; sigset_t sigs;
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void *sigctx; int how; } mess_sigcalls;
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typedef struct {int m3i1, m3i2; char *m3p1; char m3ca1[M3_LONG_STRING];} mess_3;
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typedef struct {long m4l1, m4l2, m4l3, m4l4, m4l5;} mess_4;
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typedef struct {short m5s1, m5s2; int m5i1, m5i2; long m5l1, m5l2, m5l3;}mess_5;
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typedef struct {long m6l1, m6l2, m6l3; short m6s1, m6s2, m6s3; char m6c1, m6c2;
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char *m6p1, *m6p2;} mess_6;
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typedef struct {int m7i1, m7i2, m7i3, m7i4, m7i5; char *m7p1, *m7p2;} mess_7;
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typedef struct {int m8i1, m8i2; char *m8p1, *m8p2, *m8p3, *m8p4;} mess_8;
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typedef struct {long m9l1, m9l2, m9l3, m9l4, m9l5;
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short m9s1, m9s2, m9s3, m9s4; } mess_9;
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typedef struct {int m10i1, m10i2, m10i3, m10i4;
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long m10l1, m10l2, m10l3; } mess_10;
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typedef struct {int m11i1; short m11s1, m11s2, m11s3, m11s4;
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char *m11p1, *m11p2, *m11p3, *m11p4; } mess_11;
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typedef struct {
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void *block;
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u32_t dev_offset_pages;
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u32_t ino_offset_pages;
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u32_t ino;
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u32_t *flags_ptr;
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u32_t dev;
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u8_t pages;
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u8_t flags;
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} mess_vmmcp;
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typedef struct {
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u64_t timestamp; /* valid for every notify msg */
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u64_t interrupts; /* raised interrupts; valid if from HARDWARE */
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sigset_t sigset; /* raised signals; valid if from SYSTEM */
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} mess_notify;
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typedef struct {
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endpoint_t who;
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u32_t offset;
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u32_t dev;
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u32_t ino;
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u32_t vaddr;
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u32_t len;
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u16_t fd;
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u16_t clearend_and_flags; /* low 12 bits are clearend, rest flags */
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} mess_vm_vfs_mmap;
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typedef struct { u8_t flags; void *addr; } mess_vmmcp_reply;
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typedef struct {
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endpoint_t m_source; /* who sent the message */
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int m_type; /* what kind of message is it */
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union {
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mess_1 m_m1;
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mess_2 m_m2;
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mess_3 m_m3;
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mess_4 m_m4;
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mess_5 m_m5;
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mess_7 m_m7;
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mess_8 m_m8;
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mess_6 m_m6;
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mess_9 m_m9;
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mess_10 m_m10;
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mess_11 m_m11;
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mess_vmmcp m_vmmcp;
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mess_vmmcp_reply m_vmmcp_reply;
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mess_vm_vfs_mmap m_vm_vfs;
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mess_notify m_notify; /* notify messages */
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mess_sigcalls m_sigcalls; /* SYS_{GETKSIG,ENDKSIG,KILL,SIGSEND,SIGRETURN} */
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u32_t size[14]; /* message payload may have 14 longs at most */
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} m_u;
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} message __aligned(16);
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/* The following defines provide names for useful members. */
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#define m1_i1 m_u.m_m1.m1i1
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#define m1_i2 m_u.m_m1.m1i2
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#define m1_i3 m_u.m_m1.m1i3
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#define m1_p1 m_u.m_m1.m1p1
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#define m1_p2 m_u.m_m1.m1p2
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#define m1_p3 m_u.m_m1.m1p3
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#define m1_p4 m_u.m_m1.m1p4
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#define m2_i1 m_u.m_m2.m2i1
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#define m2_i2 m_u.m_m2.m2i2
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#define m2_i3 m_u.m_m2.m2i3
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#define m2_l1 m_u.m_m2.m2l1
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#define m2_l2 m_u.m_m2.m2l2
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#define m2_p1 m_u.m_m2.m2p1
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#define m2_sigset m_u.m_m2.sigset
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#define m2_s1 m_u.m_m2.m2s1
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#define m3_i1 m_u.m_m3.m3i1
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#define m3_i2 m_u.m_m3.m3i2
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#define m3_p1 m_u.m_m3.m3p1
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#define m3_ca1 m_u.m_m3.m3ca1
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#define m4_l1 m_u.m_m4.m4l1
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#define m4_l2 m_u.m_m4.m4l2
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#define m4_l3 m_u.m_m4.m4l3
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#define m4_l4 m_u.m_m4.m4l4
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#define m4_l5 m_u.m_m4.m4l5
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#define m5_s1 m_u.m_m5.m5s1
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#define m5_s2 m_u.m_m5.m5s2
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#define m5_i1 m_u.m_m5.m5i1
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#define m5_i2 m_u.m_m5.m5i2
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#define m5_l1 m_u.m_m5.m5l1
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#define m5_l2 m_u.m_m5.m5l2
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#define m5_l3 m_u.m_m5.m5l3
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#define m6_l1 m_u.m_m6.m6l1
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#define m6_l2 m_u.m_m6.m6l2
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#define m6_l3 m_u.m_m6.m6l3
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#define m6_s1 m_u.m_m6.m6s1
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#define m6_s2 m_u.m_m6.m6s2
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#define m6_s3 m_u.m_m6.m6s3
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#define m6_c1 m_u.m_m6.m6c1
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#define m6_c2 m_u.m_m6.m6c2
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#define m6_p1 m_u.m_m6.m6p1
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#define m6_p2 m_u.m_m6.m6p2
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#define m7_i1 m_u.m_m7.m7i1
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#define m7_i2 m_u.m_m7.m7i2
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#define m7_i3 m_u.m_m7.m7i3
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#define m7_i4 m_u.m_m7.m7i4
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#define m7_i5 m_u.m_m7.m7i5
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#define m7_p1 m_u.m_m7.m7p1
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#define m7_p2 m_u.m_m7.m7p2
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#define m8_i1 m_u.m_m8.m8i1
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#define m8_i2 m_u.m_m8.m8i2
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#define m8_p1 m_u.m_m8.m8p1
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#define m8_p2 m_u.m_m8.m8p2
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#define m8_p3 m_u.m_m8.m8p3
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#define m8_p4 m_u.m_m8.m8p4
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#define m9_l1 m_u.m_m9.m9l1
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#define m9_l2 m_u.m_m9.m9l2
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#define m9_l3 m_u.m_m9.m9l3
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#define m9_l4 m_u.m_m9.m9l4
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#define m9_l5 m_u.m_m9.m9l5
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#define m9_s1 m_u.m_m9.m9s1
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#define m9_s2 m_u.m_m9.m9s2
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#define m9_s3 m_u.m_m9.m9s3
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#define m9_s4 m_u.m_m9.m9s4
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#define m10_i1 m_u.m_m10.m10i1
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#define m10_i2 m_u.m_m10.m10i2
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#define m10_i3 m_u.m_m10.m10i3
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#define m10_i4 m_u.m_m10.m10i4
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#define m10_l1 m_u.m_m10.m10l1
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#define m10_l2 m_u.m_m10.m10l2
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#define m10_l3 m_u.m_m10.m10l3
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#define m11_i1 m_u.m_m11.m11i1
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#define m11_s1 m_u.m_m11.m11s1
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#define m11_s2 m_u.m_m11.m11s2
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#define m11_s3 m_u.m_m11.m11s3
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#define m11_s4 m_u.m_m11.m11s4
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#define m11_p1 m_u.m_m11.m11p1
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#define m11_p2 m_u.m_m11.m11p2
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#define m11_p3 m_u.m_m11.m11p3
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#define m11_p4 m_u.m_m11.m11p4
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/*==========================================================================*
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* Minix run-time system (IPC). *
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*==========================================================================*/
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/* Datastructure for asynchronous sends */
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typedef struct asynmsg
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{
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unsigned flags;
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endpoint_t dst;
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int result;
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message msg;
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} asynmsg_t;
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/* Defines for flags field */
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#define AMF_EMPTY 000 /* slot is not inuse */
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#define AMF_VALID 001 /* slot contains message */
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#define AMF_DONE 002 /* Kernel has processed the message. The
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* result is stored in 'result'
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*/
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#define AMF_NOTIFY 004 /* Send a notification when AMF_DONE is set */
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#define AMF_NOREPLY 010 /* Not a reply message for a SENDREC */
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#define AMF_NOTIFY_ERR 020 /* Send a notification when AMF_DONE is set and
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* delivery of the message failed */
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int _ipc_send_intr(endpoint_t dest, message *m_ptr);
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int _ipc_receive_intr(endpoint_t src, message *m_ptr, int *status_ptr);
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int _ipc_sendrec_intr(endpoint_t src_dest, message *m_ptr);
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int _ipc_sendnb_intr(endpoint_t dest, message *m_ptr);
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int _ipc_notify_intr(endpoint_t dest);
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int _ipc_senda_intr(asynmsg_t *table, size_t count);
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int _do_kernel_call_intr(message *m_ptr);
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int get_minix_kerninfo(struct minix_kerninfo **);
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/* Hide names to avoid name space pollution. */
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#define ipc_notify _ipc_notify
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#define ipc_sendrec _ipc_sendrec
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#define ipc_receive _ipc_receive
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#define ipc_receivenb _ipc_receivenb
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#define ipc_send _ipc_send
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#define ipc_sendnb _ipc_sendnb
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#define ipc_senda _ipc_senda
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#define do_kernel_call _do_kernel_call
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struct minix_ipcvecs {
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int (*send)(endpoint_t dest, message *m_ptr);
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int (*receive)(endpoint_t src, message *m_ptr, int *st);
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int (*sendrec)(endpoint_t src_dest, message *m_ptr);
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int (*sendnb)(endpoint_t dest, message *m_ptr);
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int (*notify)(endpoint_t dest);
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int (*do_kernel_call)(message *m_ptr);
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int (*senda)(asynmsg_t *table, size_t count);
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};
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/* kernel-set IPC vectors retrieved by a constructor in libc/sys-minix/init.c */
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extern struct minix_ipcvecs _minix_ipcvecs;
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static inline int _ipc_send(endpoint_t dest, message *m_ptr)
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{
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return _minix_ipcvecs.send(dest, m_ptr);
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}
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static inline int _ipc_receive(endpoint_t src, message *m_ptr, int *st)
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{
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return _minix_ipcvecs.receive(src, m_ptr, st);
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}
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static inline int _ipc_sendrec(endpoint_t src_dest, message *m_ptr)
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{
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return _minix_ipcvecs.sendrec(src_dest, m_ptr);
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}
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static inline int _ipc_sendnb(endpoint_t dest, message *m_ptr)
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{
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return _minix_ipcvecs.sendnb(dest, m_ptr);
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}
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static inline int _ipc_notify(endpoint_t dest)
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{
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return _minix_ipcvecs.notify(dest);
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}
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static inline int _do_kernel_call(message *m_ptr)
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{
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return _minix_ipcvecs.do_kernel_call(m_ptr);
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}
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static inline int _ipc_senda(asynmsg_t *table, size_t count)
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{
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return _minix_ipcvecs.senda(table, count);
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}
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#endif /* _IPC_H */
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