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Diffstat (limited to 'sys/modules/vinum/parser.c')
| -rw-r--r-- | sys/modules/vinum/parser.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/sys/modules/vinum/parser.c b/sys/modules/vinum/parser.c new file mode 100644 index 0000000..9e7f791 --- /dev/null +++ b/sys/modules/vinum/parser.c @@ -0,0 +1,206 @@ +/*- + * Copyright (c) 1997, 1998 + * Nan Yang Computer Services Limited. All rights reserved. + * + * This software is distributed under the so-called ``Berkeley + * License'': + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Nan Yang Computer + * Services Limited. + * 4. Neither the name of the Company nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * This software is provided ``as is'', and any express or implied + * warranties, including, but not limited to, the implied warranties of + * merchantability and fitness for a particular purpose are disclaimed. + * In no event shall the company or contributors be liable for any + * direct, indirect, incidental, special, exemplary, or consequential + * damages (including, but not limited to, procurement of substitute + * goods or services; loss of use, data, or profits; or business + * interruption) however caused and on any theory of liability, whether + * in contract, strict liability, or tort (including negligence or + * otherwise) arising in any way out of the use of this software, even if + * advised of the possibility of such damage. + * + * $Id: parser.c,v 1.11 1998/08/10 08:50:42 grog Exp grog $ + */ + +/* This file contains the parser for the configuration routines. It's used + * both in the kernel and in the user interface program, thus the separate file. */ + +/* Go through a text and split up into text tokens. These are either non-blank + * sequences, or any sequence (except \0) enclosed in ' or ". Embedded ' or + * " characters may be escaped by \, which otherwise has no special meaning. + * + * Delimit by following with a \0, and return pointers to the starts at token []. + * Return the number of tokens found as the return value. + * + * This method has the restriction that a closing " or ' must be followed by + * grey space. + * + * Error conditions are end of line before end of quote, or no space after + * a closing quote. In this case, tokenize() returns -1. */ + +#include <sys/param.h> +#ifdef KERNEL +#undef KERNEL /* XXX */ +#define REALLYKERNEL +#else +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#endif +/* All this mess for a single struct definition */ +#include <sys/uio.h> +#include <sys/namei.h> +#include <sys/disklabel.h> +#include <sys/mount.h> +#include <sys/device.h> +#include <sys/disk.h> +#include "sys/buf.h" + +#include <vinumvar.h> +#include "vinumkw.h" +#include "vinumio.h" +#include "vinumext.h" + +#ifdef REALLYKERNEL +#define isspace(c) ((c == ' ') || (c == '\t')) /* check for white space */ +#else /* get it from the headers */ +#include <ctype.h> +#endif + +/* enum keyword is defined in vinumvar.h */ + +#define keypair(x) { #x, kw_##x } /* create pair "foo", kw_foo */ +#define flagkeypair(x) { "-"#x, kw_##x } /* create pair "-foo", kw_foo */ +#define KEYWORDSET(x) {sizeof (x) / sizeof (struct _keywords), x} + +/* Normal keywords. These are all the words that vinum knows. */ +struct _keywords keywords[] = +{keypair(drive), + keypair(sd), + keypair(subdisk), + keypair(plex), + keypair(volume), + keypair(vol), + keypair(setupstate), + keypair(readpol), + keypair(org), + keypair(name), + keypair(writethrough), + keypair(writeback), + keypair(raw), + keypair(device), + keypair(concat), + keypair(raid5), + keypair(striped), + keypair(plexoffset), + keypair(driveoffset), + keypair(length), + keypair(len), + keypair(state), + keypair(round), + keypair(prefer), + keypair(rename), + keypair(detached), +#ifndef KERNEL /* for vinum(8) only */ +#ifdef DEBUG + keypair(debug), +#endif + keypair(attach), + keypair(detach), + keypair(printconfig), + keypair(replace), + keypair(create), + keypair(read), + keypair(modify), + keypair(list), + keypair(l), + keypair(ld), + keypair(ls), + keypair(lp), + keypair(lv), + keypair(info), + keypair(set), + keypair(rm), + keypair(init), + keypair(label), + keypair(resetconfig), + keypair(start), + keypair(stop), + keypair(resetstats) +#endif +}; +struct keywordset keyword_set = KEYWORDSET(keywords); + +#ifndef KERNEL +struct _keywords flag_keywords[] = +{flagkeypair(f), + flagkeypair(d), + flagkeypair(v), + flagkeypair(s), + flagkeypair(r) +}; +struct keywordset flag_set = KEYWORDSET(flag_keywords); + +#endif + +int +tokenize(char *cptr, char *token[]) +{ + char delim; /* delimiter for searching for the partner */ + int tokennr; /* index of this token */ + tokennr = 0; /* none found yet */ + + for (;;) { + while (isspace(*cptr)) + cptr++; /* skip initial white space */ + if ((*cptr == '\0') || (*cptr == '\n') || (*cptr == '#')) /* end of line */ + return tokennr; /* return number of tokens found */ + delim = *cptr; + token[tokennr] = cptr; /* point to it */ + tokennr++; /* one more */ + /* XXX this is broken. It leaves superfluous \\ characters in the text */ + if ((delim == '\'') || (delim == '"')) { /* delimitered */ + for (;;) { + cptr++; + if ((*cptr == delim) && (cptr[-1] != '\\')) { /* found the partner */ + cptr++; /* move on past */ + if (!isspace(*cptr)) /* error, no space after closing quote */ + return -1; + *cptr++ = '\0'; /* delimit */ + } else if ((*cptr == '\0') || (*cptr == '\n')) /* end of line */ + return -1; + } + } else { /* not quoted */ + while ((*cptr != '\0') && (!isspace(*cptr)) && (*cptr != '\n')) + cptr++; + if (*cptr != '\0') /* not end of the line, */ + *cptr++ = '\0'; /* delimit and move to the next */ + } + } +} + +/* Find a keyword and return an index */ +enum keyword +get_keyword(char *name, struct keywordset *keywordset) +{ + int i; + struct _keywords *keywords = keywordset->k; /* point to the keywords */ + for (i = 0; i < keywordset->size; i++) + if (!strcmp(name, keywords[i].name)) + return (enum keyword) keywords[i].keyword; + return kw_invalid_keyword; +} |
