367 lines
13 KiB
C
367 lines
13 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#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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#include <string.h>
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#define CHK(fmt, args...) printf("%s(%d): " fmt "\n", __FUNCTION__, __LINE__ , ##args)
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#define PCHK(fmt, args...) {printf("%s(%d): " fmt "\n", __FUNCTION__, __LINE__ , ##args); getchar();}
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#ifndef NULL
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#define NULL 0
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#endif
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/* Avoid unwanted userlandish components */
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#define _KERNEL
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#include <sys/errno.h>
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#undef _KERNEL
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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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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, 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 zipfs_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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/* 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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int (*dv_init)(void); /* early probe call */
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int (*dv_strategy)(void *devdata, int rw, daddr_t blk, size_t size,
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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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void (*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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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 8
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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 isupper(c) ((c) >= 'A' && (c) <= 'Z')
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#define islower(c) ((c) >= 'a' && (c) <= 'z')
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#define isspace(c) ((c) == ' ' || ((c) >= 0x9 && (c) <= 0xd))
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#define isdigit(c) ((c) >= '0' && (c) <= '9')
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#define isxdigit(c) (isdigit(c) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
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#define isascii(c) (((c) & ~0x7F) == 0)
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#define isalpha(c) (isupper(c) || (islower(c)))
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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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/* Matt Dillon's zalloc/zmalloc */
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extern void *malloc(size_t bytes);
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extern void free(void *ptr);
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/*#define free(p) {CHK("free %p", p); free(p);} */ /* use for catching guard violations */
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extern void *calloc(size_t n1, size_t n2);
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extern void *realloc(void *ptr, size_t size);
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extern void *reallocf(void *ptr, size_t size);
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extern void mallocstats(void);
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#ifdef __alpha__
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extern void free_region(void *start, void *end);
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#endif
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/* disklabel support (undocumented, may be junk) */
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struct disklabel;
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extern char *getdisklabel(const char *, struct disklabel *);
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extern int printf(const char *fmt, ...);
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extern void vprintf(const char *fmt, _BSD_VA_LIST_);
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extern int sprintf(char *buf, const char *cfmt, ...);
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extern void vsprintf(char *buf, const char *cfmt, _BSD_VA_LIST_);
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extern void twiddle(void);
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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 /* writing not (yet?) supported */
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#define O_RDWR 0x2
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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, void *, size_t);
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extern struct dirent *readdirfd(int);
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extern void srandom(u_long seed);
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extern u_long random(void);
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/* imports from stdlib, locally modified */
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extern long strtol(const char *, char **, int);
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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, 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(const 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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/* 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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/* 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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/* swaps (undocumented, useful?) */
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#ifdef __i386__
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extern u_int32_t bswap32(u_int32_t x);
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extern u_int64_t bswap64(u_int32_t x);
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#endif
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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, 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 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;
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extern struct fs_ops *file_system[];
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extern struct devsw *devsw[];
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#if 0
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static inline void *
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malloc_debug(size_t size, const char *file, int line)
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{
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void *p;
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printf("%s:%d malloc(%ld)", file, line, size);
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p = malloc(size);
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printf("=%p\n", p);
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return p;
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}
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static inline void
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free_debug(void *p, const char *file, int line)
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{
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printf("%s:%d free(%p)\n", file, line, p);
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free(p);
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}
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#define malloc(x) malloc_debug(x, __FILE__, __LINE__)
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#define free(x) free_debug(x, __FILE__, __LINE__)
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#endif
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