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Changes to support endpoints.

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. rename message field name macros from *PROC* to *ENDPT*,
    both to reflect the new meaning and to use it to hunt down where
    they are used
  . _PM_SEG_FLAG in fd replaces funny segment loading construction by
    PM in FS
  . _MAX_MAGIC_PROC is the highest used proc number, including magic
    constants such as (currently) ANY, NONE and SELF, used by the
    endpoint macros to make sure they are encoded properly and no valid
    endpoint number ever encodes to it.
  . rename proc_nr in address copy struct to proc_nr_e (endpoint)
This commit is contained in:
Ben Gras
2006-03-03 09:43:06 +00:00
parent 7475a433bb
commit 7550304e19
5 changed files with 38 additions and 21 deletions
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44
include/minix/com.h
View File

@@ -5,9 +5,12 @@
* Magic process numbers *
*===========================================================================*/
/* These may not be any valid endpoint (see <minix/endpoint.h>). */
#define ANY 0x7ace /* used to indicate 'any process' */
#define NONE 0x6ace /* used to indicate 'no process at all' */
#define SELF 0x8ace /* used to indicate 'own process' */
#define _MAX_MAGIC_PROC (SELF) /* used by <minix/endpoint.h>
to determine generation size */
/*===========================================================================*
* Process numbers of processes in the system image *
@@ -149,7 +152,7 @@
/* Field names for messages to block and character device drivers. */
#define DEVICE m2_i1 /* major-minor device */
#define PROC_NR m2_i2 /* which (proc) wants I/O? */
#define IO_ENDPT m2_i2 /* which (proc/endpoint) wants I/O? */
#define COUNT m2_i3 /* how many bytes to transfer */
#define REQUEST m2_i3 /* ioctl request code */
#define POSITION m2_l1 /* file offset */
@@ -161,7 +164,7 @@
#define DEV_SEL_WATCH m2_i3 /* request notify if no operations are ready */
/* Field names used in reply messages from tasks. */
#define REP_PROC_NR m2_i1 /* # of proc on whose behalf I/O was done */
#define REP_ENDPT m2_i1 /* # of proc on whose behalf I/O was done */
#define REP_STATUS m2_i2 /* bytes transferred or error number */
# define SUSPEND -998 /* status to suspend caller, reply later */
@@ -209,7 +212,7 @@
/* Field names for data link layer messages. */
#define DL_PORT m2_i1
#define DL_PROC m2_i2
#define DL_PROC m2_i2 /* endpoint */
#define DL_COUNT m2_i3
#define DL_MODE m2_l1
#define DL_CLCK m2_l2
@@ -305,13 +308,13 @@
#define DIO_VALUE m2_l2 /* single I/O value */
#define DIO_VEC_ADDR m2_p1 /* address of buffer or (p,v)-pairs */
#define DIO_VEC_SIZE m2_l2 /* number of elements in vector */
#define DIO_VEC_PROC m2_i2 /* number of process where vector is */
#define DIO_VEC_ENDPT m2_i2 /* number of process where vector is */
/* Field names for SYS_SIGNARLM, SYS_FLAGARLM, SYS_SYNCALRM. */
#define ALRM_EXP_TIME m2_l1 /* expire time for the alarm call */
#define ALRM_ABS_TIME m2_i2 /* set to 1 to use absolute alarm time */
#define ALRM_TIME_LEFT m2_l1 /* how many ticks were remaining */
#define ALRM_PROC_NR m2_i1 /* which process wants the alarm? */
#define ALRM_ENDPT m2_i1 /* which process wants the alarm? */
#define ALRM_FLAG_PTR m2_p1 /* virtual address of timeout flag */
/* Field names for SYS_IRQCTL. */
@@ -326,7 +329,7 @@
# define IRQ_BYTE 0x100 /* byte values */
# define IRQ_WORD 0x200 /* word values */
# define IRQ_LONG 0x400 /* long values */
#define IRQ_PROC_NR m5_i2 /* process number, SELF, NONE */
#define IRQ_ENDPT m5_i2 /* endpoint number, SELF, NONE */
#define IRQ_HOOK_ID m5_l3 /* id of irq hook at kernel */
/* Field names for SYS_SEGCTL. */
@@ -347,16 +350,16 @@
/* Field names for SYS_ABORT. */
#define ABRT_HOW m1_i1 /* RBT_REBOOT, RBT_HALT, etc. */
#define ABRT_MON_PROC m1_i2 /* process where monitor params are */
#define ABRT_MON_ENDPT m1_i2 /* process where monitor params are */
#define ABRT_MON_LEN m1_i3 /* length of monitor params */
#define ABRT_MON_ADDR m1_p1 /* virtual address of monitor params */
/* Field names for _UMAP, _VIRCOPY, _PHYSCOPY. */
#define CP_SRC_SPACE m5_c1 /* T or D space (stack is also D) */
#define CP_SRC_PROC_NR m5_i1 /* process to copy from */
#define CP_SRC_ENDPT m5_i1 /* process to copy from */
#define CP_SRC_ADDR m5_l1 /* address where data come from */
#define CP_DST_SPACE m5_c2 /* T or D space (stack is also D) */
#define CP_DST_PROC_NR m5_i2 /* process to copy to */
#define CP_DST_ENDPT m5_i2 /* process to copy to */
#define CP_DST_ADDR m5_l2 /* address where data go to */
#define CP_NR_BYTES m5_l3 /* number of bytes to copy */
@@ -383,23 +386,30 @@
# define GET_LOCKTIMING 13 /* get lock()/unlock() latency timing */
# define GET_BIOSBUFFER 14 /* get a buffer for BIOS calls */
# define GET_LOADINFO 15 /* get load average information */
#define I_PROC_NR m7_i4 /* calling process */
#define I_ENDPT m7_i4 /* calling process */
#define I_VAL_PTR m7_p1 /* virtual address at caller */
#define I_VAL_LEN m7_i1 /* max length of value */
#define I_VAL_PTR2 m7_p2 /* second virtual address */
#define I_VAL_LEN2 m7_i2 /* second length, or proc nr */
#define I_VAL_LEN2_E m7_i2 /* second length, or proc nr */
# define GET_IRQACTIDS 16 /* get the IRQ masks */
/* Field names for SYS_TIMES. */
#define T_PROC_NR m4_l1 /* process to request time info for */
#define T_ENDPT m4_l1 /* process to request time info for */
#define T_USER_TIME m4_l1 /* user time consumed by process */
#define T_SYSTEM_TIME m4_l2 /* system time consumed by process */
#define T_CHILD_UTIME m4_l3 /* user time consumed by process' children */
#define T_CHILD_STIME m4_l4 /* sys time consumed by process' children */
#define T_BOOT_TICKS m4_l5 /* number of clock ticks since boot time */
/* vm_map */
#define VM_MAP_ENDPT m4_l1
#define VM_MAP_MAPUNMAP m4_l2
#define VM_MAP_BASE m4_l3
#define VM_MAP_SIZE m4_l4
#define VM_MAP_ADDR m4_l5
/* Field names for SYS_TRACE, SYS_PRIVCTL. */
#define CTL_PROC_NR m2_i1 /* process number of the caller */
#define CTL_ENDPT m2_i1 /* process number of the caller */
#define CTL_REQUEST m2_i2 /* server control request */
#define CTL_MM_PRIV m2_i3 /* privilege as seen by PM */
#define CTL_ARG_PTR m2_p1 /* pointer to argument */
@@ -413,16 +423,16 @@
#define S_SENDSIG 2 /* POSIX style signal handling */
#define S_SIGRETURN 3 /* return from POSIX handling */
#define S_KILL 4 /* servers kills process with signal */
#define SIG_PROC m2_i1 /* process number for inform */
#define SIG_ENDPT m2_i1 /* process number for inform */
#define SIG_NUMBER m2_i2 /* signal number to send */
#define SIG_FLAGS m2_i3 /* signal flags field */
#define SIG_MAP m2_l1 /* used by kernel to pass signal bit map */
#define SIG_CTXT_PTR m2_p1 /* pointer to info to restore signal context */
/* Field names for SYS_FORK, _EXEC, _EXIT, _NEWMAP. */
#define PR_PROC_NR m1_i1 /* indicates a (child) process */
#define PR_ENDPT m1_i1 /* indicates a process */
#define PR_PRIORITY m1_i2 /* process priority */
#define PR_PPROC_NR m1_i2 /* indicates a (parent) process */
#define PR_SLOT m1_i2 /* indicates a process slot */
#define PR_PID m1_i3 /* process id at process manager */
#define PR_STACK_PTR m1_p1 /* used for stack ptr in sys_exec, sys_getsp */
#define PR_TRACING m1_i3 /* flag to indicate tracing is on/ off */
@@ -490,7 +500,7 @@
#define DIAGNOSTICS 100 /* output a string without FS in between */
# define DIAG_PRINT_BUF m1_p1
# define DIAG_BUF_COUNT m1_i1
# define DIAG_PROC_NR m1_i2
# define DIAG_ENDPT m1_i2
#define GET_KMESS 101 /* get kmess from TTY */
# define GETKM_PTR m1_p1

10
include/minix/endpoint.h
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@@ -10,9 +10,15 @@
* allow for certain bogus endpoint numbers such as NONE, ANY, etc.
* The 207 doesn't mean anything, it's just to make the actual endpoint
* numbers irregular.
*
* The _MAX_MAGIC_PROC is defined by <minix/com.h>. That include
* file defines some magic process numbers such as ANY and NONE,
* and must never be a valid endpoint number. Therefore we make sure
* the generation size is big enough to start the next generation
* above the highest magic number.
*/
#define _ENDPOINT_MAX_PROC (_NR_PROCS + 207)
#define _ENDPOINT_GENERATION_SIZE (NR_TASKS+_ENDPOINT_MAX_PROC+1)
#define _ENDPOINT_MAX_PROC (_NR_PROCS)
#define _ENDPOINT_GENERATION_SIZE (NR_TASKS+_ENDPOINT_MAX_PROC+_MAX_MAGIC_PROC+207)
#define _ENDPOINT_MAX_GENERATION (INT_MAX/_ENDPOINT_GENERATION_SIZE-1)
/* Generation + Process slot number <-> endpoint. */

2
include/minix/syslib.h
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@@ -29,7 +29,7 @@ _PROTOTYPE( int sys_abort, (int how, ...));
_PROTOTYPE( int sys_enable_iop, (int proc));
_PROTOTYPE( int sys_exec, (int proc, char *ptr,
char *aout, vir_bytes initpc));
_PROTOTYPE( int sys_fork, (int parent, int child));
_PROTOTYPE( int sys_fork, (int parent, int child, int *));
_PROTOTYPE( int sys_newmap, (int proc, struct mem_map *ptr));
_PROTOTYPE( int sys_exit, (int proc));
_PROTOTYPE( int sys_trace, (int req, int proc, long addr, long *data_p));

2
include/minix/type.h
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@@ -42,7 +42,7 @@ struct far_mem {
/* Structure for virtual copying by means of a vector with requests. */
struct vir_addr {
int proc_nr;
int proc_nr_e;
int segment;
vir_bytes offset;
};

1
include/unistd.h
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@@ -33,6 +33,7 @@
#define RBT_PANIC 2 /* a server panics */
#define RBT_MONITOR 3 /* let the monitor do this */
#define RBT_RESET 4 /* hard reset the system */
#define _PM_SEG_FLAG (1L << 30) /* for read() and write() to FS by PM */
#endif
/* What system info to retrieve with sysgetinfo(). */