192 lines
7.6 KiB
C
192 lines
7.6 KiB
C
#ifndef _MINIX_CONST_H
|
|
#define _MINIX_CONST_H
|
|
|
|
#ifndef _MINIX_CHIP
|
|
#error _MINIX_CHIP is not defined
|
|
#endif
|
|
|
|
/* The UNUSED annotation tells the compiler or lint not to complain
|
|
* about an unused variable or function parameter.
|
|
*
|
|
* A number of different annotations are used, depending on the
|
|
* compiler or checker that is looking at the code.
|
|
*
|
|
* Note that some variants rename the parameter, so if you use
|
|
* the parameter after all, you'll get a complaint about a missing
|
|
* variable.
|
|
*
|
|
* You use it like this:
|
|
*
|
|
* void foo(int UNUSED(x)){}
|
|
*/
|
|
|
|
#ifndef UNUSED
|
|
#if defined _lint
|
|
# define UNUSED(v) /*lint -e(715,818)*/ v
|
|
#elif defined(__GNUC__)
|
|
# define UNUSED(v) UNUSED_ ## v __attribute((unused))
|
|
#elif defined __LCLINT__
|
|
# define UNUSED(v) /*@unused@*/ v
|
|
#else
|
|
# define UNUSED(v) _UNUSED_ ## v
|
|
#endif
|
|
#endif
|
|
|
|
#define EXTERN extern /* used in *.h files */
|
|
#define PRIVATE static /* PRIVATE x limits the scope of x */
|
|
#define PUBLIC /* PUBLIC is the opposite of PRIVATE */
|
|
#define FORWARD static /* some compilers require this to be 'static'*/
|
|
|
|
#define TRUE 1 /* used for turning integers into Booleans */
|
|
#define FALSE 0 /* used for turning integers into Booleans */
|
|
|
|
#define DEFAULT_HZ 60 /* clock freq (software settable on IBM-PC) */
|
|
|
|
#define SUPER_USER ((uid_t) 0) /* uid_t of superuser */
|
|
|
|
#include <sys/null.h> /* NULL Pointer */
|
|
|
|
#define SCPVEC_NR 64 /* max # of entries in a SYS_VSAFECOPY* request */
|
|
#define NR_IOREQS 64
|
|
/* maximum number of entries in an iorequest */
|
|
|
|
/* Message passing constants. */
|
|
#define MESS_SIZE (sizeof(message)) /* might need usizeof from FS here */
|
|
|
|
/* Memory related constants. */
|
|
#define SEGMENT_TYPE 0xFF00 /* bit mask to get segment type */
|
|
#define SEGMENT_INDEX 0x00FF /* bit mask to get segment index */
|
|
|
|
#define LOCAL_SEG 0x0000 /* flags indicating local memory segment */
|
|
#define NR_LOCAL_SEGS 3 /* # local segments per process (fixed) */
|
|
#define T 0 /* proc[i].mem_map[T] is for text */
|
|
#define D 1 /* proc[i].mem_map[D] is for data */
|
|
#define S 2 /* proc[i].mem_map[S] is for stack */
|
|
|
|
#define BIOS_SEG 0x0200 /* flags indicating BIOS memory segment */
|
|
|
|
#define PHYS_SEG 0x0400 /* flag indicating entire physical memory */
|
|
|
|
#define LOCAL_VM_SEG 0x1000 /* same as LOCAL_SEG, but with vm lookup */
|
|
#define VM_D (LOCAL_VM_SEG | D)
|
|
#define VM_T (LOCAL_VM_SEG | T)
|
|
#define MEM_GRANT 3
|
|
#define VM_GRANT (LOCAL_VM_SEG | MEM_GRANT)
|
|
|
|
/* Labels used to disable code sections for different reasons. */
|
|
#define DEAD_CODE 0 /* unused code in normal configuration */
|
|
#define FUTURE_CODE 0 /* new code to be activated + tested later */
|
|
#define TEMP_CODE 1 /* active code to be removed later */
|
|
|
|
/* Process name length in the PM process table, including '\0'. */
|
|
#define PROC_NAME_LEN 16
|
|
|
|
/* Miscellaneous */
|
|
#define BYTE 0377 /* mask for 8 bits */
|
|
#define READING 0 /* copy data to user */
|
|
#define WRITING 1 /* copy data from user */
|
|
#define HAVE_SCATTERED_IO 1 /* scattered I/O is now standard */
|
|
|
|
/* Memory is allocated in clicks. */
|
|
#if (_MINIX_CHIP == _CHIP_INTEL)
|
|
#define CLICK_SIZE 4096 /* unit in which memory is allocated */
|
|
#define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
|
|
#else
|
|
#error No reasonable CHIP setting.
|
|
#endif
|
|
|
|
/* Click alignment macros. */
|
|
#define CLICK_FLOOR(n) (((vir_bytes)(n) / CLICK_SIZE) * CLICK_SIZE)
|
|
#define CLICK_CEIL(n) CLICK_FLOOR((vir_bytes)(n) + CLICK_SIZE-1)
|
|
|
|
/* Sizes of memory tables. The boot monitor distinguishes three memory areas,
|
|
* namely low mem below 1M, 1M-16M, and mem after 16M. More chunks are needed
|
|
* for DOS MINIX.
|
|
*/
|
|
#define NR_MEMS 8
|
|
|
|
|
|
/* Click to byte conversions (and vice versa). */
|
|
#define HCLICK_SHIFT 4 /* log2 of HCLICK_SIZE */
|
|
#define HCLICK_SIZE 16 /* hardware segment conversion magic */
|
|
#if CLICK_SIZE >= HCLICK_SIZE
|
|
#define click_to_hclick(n) ((n) << (CLICK_SHIFT - HCLICK_SHIFT))
|
|
#else
|
|
#define click_to_hclick(n) ((n) >> (HCLICK_SHIFT - CLICK_SHIFT))
|
|
#endif
|
|
#define hclick_to_physb(n) ((phys_bytes) (n) << HCLICK_SHIFT)
|
|
#define physb_to_hclick(n) ((n) >> HCLICK_SHIFT)
|
|
|
|
#define CLICK2ABS(v) ((v) << CLICK_SHIFT)
|
|
#define ABS2CLICK(a) ((a) >> CLICK_SHIFT)
|
|
|
|
#define ABS -999 /* this process means absolute memory */
|
|
|
|
/* Flag bits for i_mode in the inode. */
|
|
#define I_TYPE 0170000 /* this field gives inode type */
|
|
#define I_UNIX_SOCKET 0140000 /* unix domain socket */
|
|
#define I_SYMBOLIC_LINK 0120000 /* file is a symbolic link */
|
|
#define I_REGULAR 0100000 /* regular file, not dir or special */
|
|
#define I_BLOCK_SPECIAL 0060000 /* block special file */
|
|
#define I_DIRECTORY 0040000 /* file is a directory */
|
|
#define I_CHAR_SPECIAL 0020000 /* character special file */
|
|
#define I_NAMED_PIPE 0010000 /* named pipe (FIFO) */
|
|
#define I_SET_UID_BIT 0004000 /* set effective uid_t on exec */
|
|
#define I_SET_GID_BIT 0002000 /* set effective gid_t on exec */
|
|
#define I_SET_STCKY_BIT 0001000 /* sticky bit */
|
|
#define ALL_MODES 0007777 /* all bits for user, group and others */
|
|
#define RWX_MODES 0000777 /* mode bits for RWX only */
|
|
#define R_BIT 0000004 /* Rwx protection bit */
|
|
#define W_BIT 0000002 /* rWx protection bit */
|
|
#define X_BIT 0000001 /* rwX protection bit */
|
|
#define I_NOT_ALLOC 0000000 /* this inode is free */
|
|
|
|
/* Some limits. */
|
|
#define MAX_INODE_NR ((ino_t) 037777777777) /* largest inode number */
|
|
#define MAX_FILE_POS ((off_t) 0x7FFFFFFF) /* largest legal file offset */
|
|
#define UMAX_FILE_POS ((unsigned) 0x7FFFFFFF) /* largest legal file offset */
|
|
|
|
#define MAX_SYM_LOOPS 8 /* how many symbolic links are recursed */
|
|
|
|
#define NO_BLOCK ((block_t) 0) /* absence of a block number */
|
|
#define NO_ENTRY ((ino_t) 0) /* absence of a dir entry */
|
|
#define NO_ZONE ((zone_t) 0) /* absence of a zone number */
|
|
#define NO_DEV ((dev_t) 0) /* absence of a device numb */
|
|
#define NO_LINK ((nlink_t) 0) /* absence of incoming links */
|
|
#define INVAL_UID ((uid_t) -1) /* invalid uid value */
|
|
#define INVAL_GID ((gid_t) -1) /* invalid gid value */
|
|
|
|
#define SERVARNAME "cttyline"
|
|
#define SERBAUDVARNAME "cttybaud"
|
|
|
|
/* Bits for the system property flags in boot image processes. */
|
|
#define PROC_FULLVM 0x100 /* VM sets and manages full pagetable */
|
|
|
|
/* Bits for s_flags in the privilege structure. */
|
|
#define PREEMPTIBLE 0x002 /* kernel tasks are not preemptible */
|
|
#define BILLABLE 0x004 /* some processes are not billable */
|
|
#define DYN_PRIV_ID 0x008 /* privilege id assigned dynamically */
|
|
|
|
#define SYS_PROC 0x010 /* system processes have own priv structure */
|
|
#define CHECK_IO_PORT 0x020 /* check if I/O request is allowed */
|
|
#define CHECK_IRQ 0x040 /* check if IRQ can be used */
|
|
#define CHECK_MEM 0x080 /* check if (VM) mem map request is allowed */
|
|
#define ROOT_SYS_PROC 0x100 /* this is a root system process instance */
|
|
#define VM_SYS_PROC 0x200 /* this is a vm system process instance */
|
|
#define LU_SYS_PROC 0x400 /* this is a live updated sys proc instance */
|
|
#define RST_SYS_PROC 0x800 /* this is a restarted sys proc instance */
|
|
|
|
/* Bits for device driver flags managed by RS and VFS. */
|
|
#define DRV_FORCED 0x01 /* driver is mapped even if not alive yet */
|
|
|
|
/* Values for the "verbose" boot monitor variable */
|
|
#define VERBOSEBOOT_QUIET 0
|
|
#define VERBOSEBOOT_BASIC 1
|
|
#define VERBOSEBOOT_EXTRA 2
|
|
#define VERBOSEBOOT_MAX 3
|
|
#define VERBOSEBOOTVARNAME "verbose"
|
|
|
|
/* magic value to put in struct proc entries for sanity checks. */
|
|
#define PMAGIC 0xC0FFEE1
|
|
|
|
#endif /* _MINIX_CONST_H */
|