447 lines
15 KiB
C
447 lines
15 KiB
C
/*
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* Copyright (c) 1998 Michael Smith.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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* From $NetBSD: stand.h,v 1.22 1997/06/26 19:17:40 drochner Exp $
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*/
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stand.h 8.1 (Berkeley) 6/11/93
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*/
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#ifndef STAND_H
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#define STAND_H
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#include <sys/types.h>
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#include <sys/cdefs.h>
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#include <sys/stat.h>
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#include <sys/dirent.h>
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/* this header intentionally exports NULL from <string.h> */
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#include <string.h>
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#define strcoll(a, b) strcmp((a), (b))
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#define CHK(fmt, args...) printf("%s(%d): " fmt "\n", __func__, __LINE__ , ##args)
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#define PCHK(fmt, args...) {printf("%s(%d): " fmt "\n", __func__, __LINE__ , ##args); getchar();}
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#include <sys/errno.h>
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/* special stand error codes */
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#define EADAPT (ELAST+1) /* bad adaptor */
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#define ECTLR (ELAST+2) /* bad controller */
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#define EUNIT (ELAST+3) /* bad unit */
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#define ESLICE (ELAST+4) /* bad slice */
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#define EPART (ELAST+5) /* bad partition */
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#define ERDLAB (ELAST+6) /* can't read disk label */
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#define EUNLAB (ELAST+7) /* unlabeled disk */
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#define EOFFSET (ELAST+8) /* relative seek not supported */
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#define ESALAST (ELAST+8) /* */
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/* Partial signal emulation for sig_atomic_t */
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#include <machine/signal.h>
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struct open_file;
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/*
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* This structure is used to define file system operations in a file system
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* independent way.
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*
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* XXX note that filesystem providers should export a pointer to their fs_ops
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* struct, so that consumers can reference this and thus include the
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* filesystems that they require.
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*/
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struct fs_ops {
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const char *fs_name;
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int (*fo_open)(const char *path, struct open_file *f);
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int (*fo_close)(struct open_file *f);
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int (*fo_read)(struct open_file *f, void *buf,
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size_t size, size_t *resid);
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int (*fo_write)(struct open_file *f, const void *buf,
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size_t size, size_t *resid);
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off_t (*fo_seek)(struct open_file *f, off_t offset, int where);
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int (*fo_stat)(struct open_file *f, struct stat *sb);
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int (*fo_readdir)(struct open_file *f, struct dirent *d);
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};
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/*
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* libstand-supplied filesystems
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*/
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extern struct fs_ops ufs_fsops;
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extern struct fs_ops tftp_fsops;
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extern struct fs_ops nfs_fsops;
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extern struct fs_ops cd9660_fsops;
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extern struct fs_ops nandfs_fsops;
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extern struct fs_ops gzipfs_fsops;
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extern struct fs_ops bzipfs_fsops;
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extern struct fs_ops dosfs_fsops;
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extern struct fs_ops ext2fs_fsops;
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extern struct fs_ops splitfs_fsops;
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extern struct fs_ops pkgfs_fsops;
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/* where values for lseek(2) */
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#define SEEK_SET 0 /* set file offset to offset */
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#define SEEK_CUR 1 /* set file offset to current plus offset */
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#define SEEK_END 2 /* set file offset to EOF plus offset */
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/*
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* Device switch
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*/
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struct devsw {
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const char dv_name[8];
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int dv_type; /* opaque type constant, arch-dependant */
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#define DEVT_NONE 0
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#define DEVT_DISK 1
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#define DEVT_NET 2
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#define DEVT_CD 3
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#define DEVT_ZFS 4
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#define DEVT_FD 5
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int (*dv_init)(void); /* early probe call */
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int (*dv_strategy)(void *devdata, int rw, daddr_t blk,
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size_t size, char *buf, size_t *rsize);
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int (*dv_open)(struct open_file *f, ...);
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int (*dv_close)(struct open_file *f);
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int (*dv_ioctl)(struct open_file *f, u_long cmd, void *data);
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int (*dv_print)(int verbose); /* print device information */
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void (*dv_cleanup)(void);
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};
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/*
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* libstand-supplied device switch
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*/
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extern struct devsw netdev;
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extern int errno;
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/*
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* Generic device specifier; architecture-dependent
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* versions may be larger, but should be allowed to
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* overlap.
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*/
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struct devdesc {
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struct devsw *d_dev;
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int d_unit;
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void *d_opendata;
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};
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struct open_file {
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int f_flags; /* see F_* below */
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struct devsw *f_dev; /* pointer to device operations */
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void *f_devdata; /* device specific data */
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struct fs_ops *f_ops; /* pointer to file system operations */
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void *f_fsdata; /* file system specific data */
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off_t f_offset; /* current file offset */
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char *f_rabuf; /* readahead buffer pointer */
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size_t f_ralen; /* valid data in readahead buffer */
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off_t f_raoffset; /* consumer offset in readahead buffer */
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#define SOPEN_RASIZE 512
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};
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#define SOPEN_MAX 64
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extern struct open_file files[];
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/* f_flags values */
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#define F_READ 0x0001 /* file opened for reading */
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#define F_WRITE 0x0002 /* file opened for writing */
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#define F_RAW 0x0004 /* raw device open - no file system */
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#define F_NODEV 0x0008 /* network open - no device */
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#define F_MASK 0xFFFF
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/* Mode modifier for strategy() */
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#define F_NORA (0x01 << 16) /* Disable Read-Ahead */
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#define isascii(c) (((c) & ~0x7F) == 0)
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static __inline int isupper(int c)
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{
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return c >= 'A' && c <= 'Z';
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}
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static __inline int islower(int c)
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{
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return c >= 'a' && c <= 'z';
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}
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static __inline int isspace(int c)
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{
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return c == ' ' || (c >= 0x9 && c <= 0xd);
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}
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static __inline int isdigit(int c)
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{
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return c >= '0' && c <= '9';
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}
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static __inline int isxdigit(int c)
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{
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return isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
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}
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static __inline int isalpha(int c)
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{
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return isupper(c) || islower(c);
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}
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static __inline int isalnum(int c)
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{
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return isalpha(c) || isdigit(c);
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}
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static __inline int iscntrl(int c)
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{
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return (c >= 0 && c < ' ') || c == 127;
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}
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static __inline int isgraph(int c)
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{
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return c >= '!' && c <= '~';
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}
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static __inline int ispunct(int c)
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{
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return (c >= '!' && c <= '/') || (c >= ':' && c <= '@') ||
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(c >= '[' && c <= '`') || (c >= '{' && c <= '~');
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}
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static __inline int toupper(int c)
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{
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return islower(c) ? c - 'a' + 'A' : c;
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}
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static __inline int tolower(int c)
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{
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return isupper(c) ? c - 'A' + 'a' : c;
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}
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/* sbrk emulation */
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extern void setheap(void *base, void *top);
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extern char *sbrk(int incr);
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extern void *reallocf(void *ptr, size_t size);
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extern void mallocstats(void);
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extern int printf(const char *fmt, ...) __printflike(1, 2);
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extern void vprintf(const char *fmt, __va_list);
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extern int sprintf(char *buf, const char *cfmt, ...) __printflike(2, 3);
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extern int snprintf(char *buf, size_t size, const char *cfmt, ...) __printflike(3, 4);
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extern void vsprintf(char *buf, const char *cfmt, __va_list);
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extern void twiddle(u_int callerdiv);
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extern void twiddle_divisor(u_int globaldiv);
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extern void ngets(char *, int);
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#define gets(x) ngets((x), 0)
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extern int fgetstr(char *buf, int size, int fd);
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extern int open(const char *, int);
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#define O_RDONLY 0x0
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#define O_WRONLY 0x1
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#define O_RDWR 0x2
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/* NOT IMPLEMENTED */
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#define O_CREAT 0x0200 /* create if nonexistent */
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#define O_TRUNC 0x0400 /* truncate to zero length */
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extern int close(int);
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extern void closeall(void);
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extern ssize_t read(int, void *, size_t);
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extern ssize_t write(int, const void *, size_t);
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extern struct dirent *readdirfd(int);
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extern void srandom(unsigned int);
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extern long random(void);
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/* imports from stdlib, locally modified */
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extern char *optarg; /* getopt(3) external variables */
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extern int optind, opterr, optopt, optreset;
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extern int getopt(int, char * const [], const char *);
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/* pager.c */
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extern void pager_open(void);
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extern void pager_close(void);
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extern int pager_output(const char *lines);
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extern int pager_file(const char *fname);
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/* No signal state to preserve */
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#define setjmp _setjmp
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#define longjmp _longjmp
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/* environment.c */
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#define EV_DYNAMIC (1<<0) /* value was dynamically allocated, free if changed/unset */
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#define EV_VOLATILE (1<<1) /* value is volatile, make a copy of it */
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#define EV_NOHOOK (1<<2) /* don't call hook when setting */
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struct env_var;
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typedef char *(ev_format_t)(struct env_var *ev);
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typedef int (ev_sethook_t)(struct env_var *ev, int flags,
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const void *value);
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typedef int (ev_unsethook_t)(struct env_var *ev);
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struct env_var
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{
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char *ev_name;
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int ev_flags;
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void *ev_value;
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ev_sethook_t *ev_sethook;
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ev_unsethook_t *ev_unsethook;
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struct env_var *ev_next, *ev_prev;
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};
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extern struct env_var *environ;
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extern struct env_var *env_getenv(const char *name);
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extern int env_setenv(const char *name, int flags,
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const void *value, ev_sethook_t sethook,
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ev_unsethook_t unsethook);
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extern char *getenv(const char *name);
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extern int setenv(const char *name, const char *value,
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int overwrite);
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extern int putenv(char *string);
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extern int unsetenv(const char *name);
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extern ev_sethook_t env_noset; /* refuse set operation */
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extern ev_unsethook_t env_nounset; /* refuse unset operation */
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/* stdlib.h routines */
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extern int abs(int a);
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extern void abort(void) __dead2;
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extern long strtol(const char * __restrict, char ** __restrict, int);
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extern long long strtoll(const char * __restrict, char ** __restrict, int);
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extern unsigned long strtoul(const char * __restrict, char ** __restrict, int);
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extern unsigned long long strtoull(const char * __restrict, char ** __restrict, int);
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/* BCD conversions (undocumented) */
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extern u_char const bcd2bin_data[];
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extern u_char const bin2bcd_data[];
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extern char const hex2ascii_data[];
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#define bcd2bin(bcd) (bcd2bin_data[bcd])
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#define bin2bcd(bin) (bin2bcd_data[bin])
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#define hex2ascii(hex) (hex2ascii_data[hex])
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#define validbcd(bcd) (bcd == 0 || (bcd > 0 && bcd <= 0x99 && bcd2bin_data[bcd] != 0))
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/* min/max (undocumented) */
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static __inline int imax(int a, int b) { return (a > b ? a : b); }
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static __inline int imin(int a, int b) { return (a < b ? a : b); }
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static __inline long lmax(long a, long b) { return (a > b ? a : b); }
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static __inline long lmin(long a, long b) { return (a < b ? a : b); }
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static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); }
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static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); }
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static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); }
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static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); }
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static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); }
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static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); }
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/* null functions for device/filesystem switches (undocumented) */
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extern int nodev(void);
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extern int noioctl(struct open_file *, u_long, void *);
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extern void nullsys(void);
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extern int null_open(const char *path, struct open_file *f);
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extern int null_close(struct open_file *f);
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extern int null_read(struct open_file *f, void *buf, size_t size, size_t *resid);
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extern int null_write(struct open_file *f, const void *buf, size_t size, size_t *resid);
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extern off_t null_seek(struct open_file *f, off_t offset, int where);
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extern int null_stat(struct open_file *f, struct stat *sb);
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extern int null_readdir(struct open_file *f, struct dirent *d);
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/*
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* Machine dependent functions and data, must be provided or stubbed by
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* the consumer
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*/
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extern void exit(int) __dead2;
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extern int getchar(void);
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extern int ischar(void);
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extern void putchar(int);
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extern int devopen(struct open_file *, const char *, const char **);
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extern int devclose(struct open_file *f);
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extern void panic(const char *, ...) __dead2 __printflike(1, 2);
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extern void panic_action(void) __weak_symbol __dead2;
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extern time_t getsecs(void);
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extern struct fs_ops *file_system[];
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extern struct fs_ops *exclusive_file_system;
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extern struct devsw *devsw[];
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/*
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* Expose byteorder(3) functions.
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*/
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#ifndef _BYTEORDER_PROTOTYPED
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#define _BYTEORDER_PROTOTYPED
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extern uint32_t htonl(uint32_t);
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extern uint16_t htons(uint16_t);
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extern uint32_t ntohl(uint32_t);
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extern uint16_t ntohs(uint16_t);
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#endif
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#ifndef _BYTEORDER_FUNC_DEFINED
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#define _BYTEORDER_FUNC_DEFINED
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#define htonl(x) __htonl(x)
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#define htons(x) __htons(x)
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#define ntohl(x) __ntohl(x)
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#define ntohs(x) __ntohs(x)
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#endif
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void *Malloc(size_t, const char *, int);
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void *Calloc(size_t, size_t, const char *, int);
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void *Realloc(void *, size_t, const char *, int);
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void Free(void *, const char *, int);
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#ifdef DEBUG_MALLOC
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#define malloc(x) Malloc(x, __FILE__, __LINE__)
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#define calloc(x, y) Calloc(x, y, __FILE__, __LINE__)
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#define free(x) Free(x, __FILE__, __LINE__)
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#define realloc(x, y) Realloc(x, y, __FILE__, __LINE__)
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#else
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#define malloc(x) Malloc(x, NULL, 0)
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#define calloc(x, y) Calloc(x, y, NULL, 0)
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#define free(x) Free(x, NULL, 0)
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#define realloc(x, y) Realloc(x, y, NULL, 0)
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#endif
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#endif /* STAND_H */
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