/include/minix/const.h
C Header | 180 lines | 113 code | 35 blank | 32 comment | 1 complexity | d4afdcc428f8791541861104b4fe550a MD5 | raw file
Possible License(s): MIT, WTFPL, AGPL-1.0, BSD-3-Clause, GPL-3.0, LGPL-2.0, JSON, 0BSD
- #ifndef _MINIX_CONST_H
- #define _MINIX_CONST_H
- #include <machine/archconst.h>
- /* 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 TRUE 1 /* used for turning integers into Booleans */
- #define FALSE 0 /* used for turning integers into Booleans */
- #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 MAPVEC_NR 64 /* max # of entries in a SYS_VUMAP request */
- #define NR_IOREQS 64 /* maximum number of entries in an iorequest */
- #define VUA_READ 0x01 /* for SYS_VUMAP: read access */
- #define VUA_WRITE 0x02 /* for SYS_VUMAP: write access */
- /* 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 D_OBSOLETE 1 /* proc[i].mem_map[D] is for data */
- #define PHYS_SEG 0x0400 /* flag indicating entire physical memory */
- #define LOCAL_VM_SEG 0x1000 /* same as LOCAL_SEG, but with vm lookup */
- #define MEM_GRANT 3
- #define VIR_ADDR 1
- #define VM_D (LOCAL_VM_SEG | VIR_ADDR)
- #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 */
- /* 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 defined(__i386__) || defined(__arm__)
- #define CLICK_SIZE 4096 /* unit in which memory is allocated */
- #define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
- #else
- #error Unsupported arch
- #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 16
- /* 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 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
- /* MINIX_KERNFLAGS flags */
- #define MKF_I386_INTEL_SYSENTER (1L << 0) /* SYSENTER available and supported */
- #define MKF_I386_AMD_SYSCALL (1L << 1) /* SYSCALL available and supported */
- #endif /* _MINIX_CONST_H */