#ifndef _MINIX_CONST_H #define _MINIX_CONST_H #ifndef CHIP #error 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 /* 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 REMOTE_SEG 0x0100 /* flags indicating remote memory segment */ #define NR_REMOTE_SEGS 3 /* # remote memory regions (variable) */ #define BIOS_SEG 0x0200 /* flags indicating BIOS memory segment */ #define NR_BIOS_SEGS 3 /* # BIOS memory regions (variable) */ #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 (CHIP == INTEL) #define CLICK_SIZE 4096 /* unit in which memory is allocated */ #define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */ #endif #if (CHIP == SPARC) || (CHIP == M68000) #define CLICK_SIZE 4096 /* unit in which memory is allocated */ #define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */ #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 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" /* 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 */