aaca17c36d
and DEV_IOCTL_S as replacements for DEV_READ, DEV_WRITE, DEV_SCATTER, DEV_GATHER and DEV_IOCTL. Instead of a direct address, the *_S commands pass 'grant ids' to the drivers which are referenced through a new set of copy calls (sys_safecopyfrom and sys_safecopyto). in order for this copy to succeed, the grant must have previously been created in the address space of the granter. . bitmap manipulation functions moved to <minix/bitmap.h> . HIGHPOS introduced as field containing high 32 bits of position in device I/O message; TTY_FLAGS no longer used . IO_GRANT field introduced for GRANTs, to replace ADDRESS . REP_IO_GRANT field for un-SUSPEND messages introduced to indicate grant for which I/O was done to disambiguate messages . SYS_SAFECOPYFROM and SYS_SAFECOPYTO introduced as new calls . SYS_PRIV_SET_GRANTS code introduced as a code to set the address and size of the grant table in a process' own address space . 'type' and 'direction' field of _ins* and _outs* I/O functions are merged into one by ORing _DIO_INPUT/_DIO_OUTPUT and _DIO_BYTE/_DIO_WORD etc. This allows for an additional parameter, _DIO_SAFE, which indicates the address in another address space isn't actually an address, but a grant id. Also needs an offset, for which fields had to be merged. . SCP_* are field names for SYS_SAFECOPY* functions . DIAGNOSTICS and GET_KMESS moved to their own range above DIAG_BASE, added DIAGNOSTICS_S which is a grant-based variant of DIAGNOSTICS . removed obsolete BINCOMPAT and SRCCOMPAT options . added GRANT_SEG type for use in vircopy - allows copying to a grant id (without offset) . added _MINIX_IOCTL_* macros that decode information encoded by _IO* macros in ioctl codes, used to check which grants are necessary for an ioctl . introduced the type endpoint_t for process endpoints, changed some prototypes and struct field types to match . renamed protected to prot for g++
121 lines
5.2 KiB
C
Executable File
121 lines
5.2 KiB
C
Executable File
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#ifndef CHIP
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#error CHIP is not defined
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#endif
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#define EXTERN extern /* used in *.h files */
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#define PRIVATE static /* PRIVATE x limits the scope of x */
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#define PUBLIC /* PUBLIC is the opposite of PRIVATE */
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#define FORWARD static /* some compilers require this to be 'static'*/
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#define TRUE 1 /* used for turning integers into Booleans */
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#define FALSE 0 /* used for turning integers into Booleans */
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#define HZ 60 /* clock freq (software settable on IBM-PC) */
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#define SUPER_USER (uid_t) 0 /* uid_t of superuser */
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#define NULL ((void *)0) /* null pointer */
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#define CPVEC_NR 16 /* max # of entries in a SYS_VCOPY request */
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#define CPVVEC_NR 64 /* max # of entries in a SYS_VCOPY request */
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#define NR_IOREQS MIN(NR_BUFS, 64)
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/* maximum number of entries in an iorequest */
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/* Message passing constants. */
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#define MESS_SIZE (sizeof(message)) /* might need usizeof from FS here */
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#define NIL_MESS ((message *) 0) /* null pointer */
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/* Memory related constants. */
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#define SEGMENT_TYPE 0xFF00 /* bit mask to get segment type */
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#define SEGMENT_INDEX 0x00FF /* bit mask to get segment index */
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#define LOCAL_SEG 0x0000 /* flags indicating local memory segment */
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#define NR_LOCAL_SEGS 3 /* # local segments per process (fixed) */
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#define T 0 /* proc[i].mem_map[T] is for text */
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#define D 1 /* proc[i].mem_map[D] is for data */
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#define S 2 /* proc[i].mem_map[S] is for stack */
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#define REMOTE_SEG 0x0100 /* flags indicating remote memory segment */
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#define NR_REMOTE_SEGS 3 /* # remote memory regions (variable) */
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#define BIOS_SEG 0x0200 /* flags indicating BIOS memory segment */
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#define NR_BIOS_SEGS 3 /* # BIOS memory regions (variable) */
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#define PHYS_SEG 0x0400 /* flag indicating entire physical memory */
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#define GRANT_SEG 0x0800 /* flag indicating grant for umap */
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/* Labels used to disable code sections for different reasons. */
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#define DEAD_CODE 0 /* unused code in normal configuration */
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#define FUTURE_CODE 0 /* new code to be activated + tested later */
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#define TEMP_CODE 1 /* active code to be removed later */
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/* Process name length in the PM process table, including '\0'. */
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#define PROC_NAME_LEN 16
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/* Miscellaneous */
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#define BYTE 0377 /* mask for 8 bits */
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#define READING 0 /* copy data to user */
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#define WRITING 1 /* copy data from user */
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#define NO_NUM 0x8000 /* used as numerical argument to panic() */
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#define NIL_PTR (char *) 0 /* generally useful expression */
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#define HAVE_SCATTERED_IO 1 /* scattered I/O is now standard */
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/* Macros. */
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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/* Memory is allocated in clicks. */
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#if (CHIP == INTEL)
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#define CLICK_SIZE 4096 /* unit in which memory is allocated */
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#define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
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#endif
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#if (CHIP == SPARC) || (CHIP == M68000)
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#define CLICK_SIZE 4096 /* unit in which memory is allocated */
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#define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
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#endif
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/* Click to byte conversions (and vice versa). */
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#define HCLICK_SHIFT 4 /* log2 of HCLICK_SIZE */
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#define HCLICK_SIZE 16 /* hardware segment conversion magic */
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#if CLICK_SIZE >= HCLICK_SIZE
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#define click_to_hclick(n) ((n) << (CLICK_SHIFT - HCLICK_SHIFT))
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#else
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#define click_to_hclick(n) ((n) >> (HCLICK_SHIFT - CLICK_SHIFT))
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#endif
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#define hclick_to_physb(n) ((phys_bytes) (n) << HCLICK_SHIFT)
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#define physb_to_hclick(n) ((n) >> HCLICK_SHIFT)
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#define ABS -999 /* this process means absolute memory */
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/* Flag bits for i_mode in the inode. */
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#define I_TYPE 0170000 /* this field gives inode type */
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#define I_SYMBOLIC_LINK 0120000 /* file is a symbolic link */
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#define I_REGULAR 0100000 /* regular file, not dir or special */
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#define I_BLOCK_SPECIAL 0060000 /* block special file */
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#define I_DIRECTORY 0040000 /* file is a directory */
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#define I_CHAR_SPECIAL 0020000 /* character special file */
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#define I_NAMED_PIPE 0010000 /* named pipe (FIFO) */
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#define I_SET_UID_BIT 0004000 /* set effective uid_t on exec */
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#define I_SET_GID_BIT 0002000 /* set effective gid_t on exec */
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#define ALL_MODES 0006777 /* all bits for user, group and others */
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#define RWX_MODES 0000777 /* mode bits for RWX only */
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#define R_BIT 0000004 /* Rwx protection bit */
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#define W_BIT 0000002 /* rWx protection bit */
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#define X_BIT 0000001 /* rwX protection bit */
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#define I_NOT_ALLOC 0000000 /* this inode is free */
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/* Some limits. */
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#define MAX_BLOCK_NR ((block_t) 077777777) /* largest block number */
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#define HIGHEST_ZONE ((zone_t) 077777777) /* largest zone number */
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#define MAX_INODE_NR ((ino_t) 037777777777) /* largest inode number */
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#define MAX_FILE_POS ((off_t) 037777777777) /* largest legal file offset */
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#define MAX_SYM_LOOPS 8 /* how many symbolic links are recursed */
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#define NO_BLOCK ((block_t) 0) /* absence of a block number */
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#define NO_ENTRY ((ino_t) 0) /* absence of a dir entry */
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#define NO_ZONE ((zone_t) 0) /* absence of a zone number */
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#define NO_DEV ((dev_t) 0) /* absence of a device numb */
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