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Diffstat (limited to 'usr/src/lib/libdscfg/common/cfg_impl.h')
| -rw-r--r-- | usr/src/lib/libdscfg/common/cfg_impl.h | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/usr/src/lib/libdscfg/common/cfg_impl.h b/usr/src/lib/libdscfg/common/cfg_impl.h deleted file mode 100644 index a972b2525f..0000000000 --- a/usr/src/lib/libdscfg/common/cfg_impl.h +++ /dev/null @@ -1,247 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#ifndef _CFG_IMPL_H -#define _CFG_IMPL_H - -#ifdef __cplusplus -extern "C" { -#endif - -#define MAX_CFG 16 /* Max. number of lines in /etc/dscfg_format */ - -#define CFG_MAX_KEY 256 -#define CFG_MAX_BUF 1024 -#define CFG_BLOCK_SIZE 512 -#define CFG_VTOC_SIZE 16 -#define CFG_VTOC_SKIP CFG_VTOC_SIZE * CFG_BLOCK_SIZE - -/* - * Parser and file handling routines for Configuration parser. - * - * General layout on disk - * - * header cfgheader_t - * parser configuration tag.field1.field2\n - * configuration data copy1 freeform strings - * configuration data copy2 freeform strings - * - * Strings in freeform fields are seperated by whitespace. - * End of entry seperated by null. - */ - -struct lookup { - char l_word[CFG_MAX_KEY]; - int l_value; - struct lookup *l_next; -}; - -struct parser { - struct lookup tag; - struct lookup *fld; - struct parser *next; -}; - - -/* - * cfglist description - * - * ________ - * | | the header has (with other things) an array - * | header | of h_cfg[n].l_size entries. index 4 - * disk layout | | contains cfp->cf_head->h_cfg[4].l_size. - * |________| - * cfgfile-mapped->| | - * CFG_DEFAULT_PARSE_SIZE | parser | cache_hint.device.wrthru.nordcache.cnode - * | | - * |________| - * cfp->cf_head->h_ccopy1>| | - * CFG_DEFAULT_SSIZE | data | null terminated strings grouped together - * | copy 1 | in order of cfglist offset. ie data at - * |________| offset 0 is from h_cfgs[0].l_entry - * cfp->cf_head->h_ccopy2>| | - * CFG_DEFAULT_SSIZE | data | - * | copy 2 | same as above, used for two stage commit - * |________| - * cfp->cf_head->h_sizes1>| | here is where lists of sizes go for each - * CFG_DEFAULT_PSIZE | sizes | cfglist. each array is preceded by the num - * | copy 1 | of entries. |5|120|130|140|103|125|10|25 is - * |________| a list with 5 entries 120,130,140,103,125 - * cfp->cf_head->h_sizes2>| | these numbers are used to rebuild l_nentry - * CFG_DEFAULT_PSIZE | sizes | and l_esiz fields in h_cfg[n] - * | copy 2 | this list is done as a two stage commit - * |________| - * - * - * - * Data is read into cfp->cf_head->h_ccopy1 and cfp->cf_head->h_ccopy2 - * along with thier corresponding size metadata in cfp->cf_head->h_sizes1 - * and cfp->cf_head->h_sizes2. This infomation is used to rebuild the - * cfglist structures seen below. The data in the cfglist structure is then - * the ONLY valid data. Additions and/or deletions to the database is done - * by moving around the cfglists and doing the right things with the size - * arrays, the actual entries, total list sizes, the total of all the sizes of - * all the cfglists and memory allocation. After addition/deletions are done, - * and cfg_close is called, all of the lists are placed back into h_cparse - * (which is really h_ccopy1 or h_ccopy2) the persistent lists are placed - * into h_sizes (which is really h_sizes1 or h_sizes2). - * A copy of each cfglist[n].l_size is kept in the header - * (cfgheader->cfgsizes[n]). - * - * - * - * - * h_cfgs h_cfgs[3] - * head |-[0]- /|-l_name == sndr - * |- /|-[1]- / |-l_entry == host dev bmap host..ip sync '\0' ... - * file |- / |-[2]- / |-l_esiz[0..l_nentry - 1] == [130, 132, 135, 133,..] - * |--|---------|-[3]---- |-l_enabled[0..l_nentry - 1] == [1,0,0,1,1] - * |- \ |-[4]- \ |-l_nentry == 5 - * |- \|-[5]- \ |-l_index == 3 - * |-[n]- \|-l_free == 50537 - * |-l_size == 663 (130 + 132 + 135 + 133 + 133) - * - * - * - * l_name - is set when the parser is read. - * It is the first tag of a line of parser text. - * l_entry - is a pointer to the beginning of the null terminated string - * list that belongs to the cfglist tagged with l_name. - * l_esiz - is a list of sizes of the strings contained in l_entry. - * l_esiz[0] tells the size of the string at l_entry[0]. - * l_esiz[n] is the size of the string that begins - * at l_entry + l_esiz[0] + l_esiz[1]..+ l_esize[n - 1] - * l_enabled - is a list of ones and zeros telling if this entry is alive - * in the kernel. indexing is the same as l_esiz. (not implemented) - * l_index - is the index of the parser tree that corresponds to l_name - * and is set when the parser tree is built - * l_free - is how memory is managed. Memory is allocated on a - * DEFAULT_ENTRY_SIZE boundry. - * the size of the balance of available memory at the end of l_entry - * is kept here. when this number is lower than the string we need to add, - * another block of memory is allocated for l_entry and the balance of - * the size is added to l_free. - * l_size - is size of this list. It is the summation of l_esiz[0..n] - * - */ - -typedef struct cfglist { - char *l_name; /* name of list sndr, ii.. */ - char *l_entry; /* start of list */ - int *l_esiz; /* array of sizes of entries */ - int l_nentry; /* number of entries */ - int l_index; /* index in relation to parser position */ - uint_t l_free; /* num of characters available */ - int l_size; /* size of list */ -} cfglist_t; - -/* note: this does not imply DEFAULT_NENTRIES * DEFAULT_ENTRY_SIZE */ -#define DEFAULT_NENTRIES 100 /* value for l_esiz sizes array */ -#define DEFAULT_ENTRY_SIZE (50 * CFG_MAX_BUF) /* 50K for each l_entry */ - - -typedef struct cfgheader { - int32_t h_magic; - int h_state; /* State flag see below */ - time_t h_stamp; /* time stamp of last update */ - long h_lock; /* lock for update */ - long h_size; /* total file size */ - int h_parseoff; /* parser config offset */ - int h_parsesize; /* parser config size */ - char *h_cparse; /* start of configuration */ - int h_csize; /* size of config section */ - int h_acsize; /* size of alternate config section */ - int *h_sizes; /* sizes of lists */ - int h_psize; /* size of persistent section */ - int h_apsize; /* size of alternate persistent section */ - char *h_ccopy1; /* base of config section 1 */ - char *h_ccopy2; /* base of config section 2 */ - int *h_sizes1; /* sizes of lists on disk 1 */ - int *h_sizes2; /* sizes of lists on disk 2 */ - int h_seq1; /* Sequenece number copy 1 both sections */ - int h_seq2; /* Sequenece number copy 2 both sections */ - char h_ncfgs; /* number of cfgs */ - cfglist_t *h_cfgs; /* start of cfg lists */ - int h_cfgsizes[MAX_CFG]; /* Sizes of configs */ -} cfgheader_t; - -#define CFG_HDR_GOOD 0x1 -#define CFG_HDR_INVALID 0x2 -#define CFG_HDR_RDLOCK 0x4 -#define CFG_HDR_WRLOCK 0x8 - -struct cfg_io_s; /* forward reference */ -typedef struct cfp { - int cf_fd; /* file descriptor */ - int cf_flag; /* flags - see below */ - long cf_size; /* size of file in fbas */ - int cf_lock; /* lock file descriptor */ - char *cf_mapped; /* mapped location via mmap */ - char *cf_name; /* file name */ - cfgheader_t *cf_head; /* header */ - struct cfg_io_s *cf_pp; /* i/o provider */ -} cfp_t; - -typedef struct cfgfile { - void *cf_node; /* node filter */ - cfp_t cf[2]; /* local & optional cluster file */ -} CFGFILE; - -typedef struct cfg_io_s { - struct cfg_io_s *next; /* Link to next module */ - char *name; /* name of provider */ - cfp_t *(*open)(cfp_t *, char *); /* Open device */ - void (*close)(cfp_t *); /* Close device */ - int (*seek)(cfp_t *, int, int); /* Seek */ - int (*read)(cfp_t *, void *, int); /* read */ - int (*write)(cfp_t *, void *, int); /* write */ - char *(*readcf)(cfp_t *, char *, int, int); /* Read mem config */ - int (*addcf)(cfp_t *, char *, int); /* add to mem config */ - int (*remcf)(cfp_t *, int, int); /* remove an entry */ - int (*replacecf)(cfp_t *, char *, int, int); /* replace entry */ -} cfg_io_t; - -#define CFG_FILE 0x1 /* database is in a regular file */ -#define CFG_NOREWIND 0x4 /* don't rewind for each get_string */ -#define CFG_NOWRVTOC 0x8 /* sector starts in vtoc land, skip it */ -#define CFG_RDONLY 0x10 /* database is read only */ - -/* - * constants - */ -#define CFG_RDEV_LOCKFILE "/var/tmp/.dscfg.lck" -#define CFG_NEW_MAGIC 0x4d414749 /* MAGI */ -#define CFG_DEFAULT_PARSE_SIZE (16 * 1024) -#define CFG_DEFAULT_SSIZE (2 * 1024 * 1024) -#define CFG_DEFAULT_PSIZE (512 * 1024) -#define CFG_DEFAULT_OLDSIZE (96 * 1024) -#define CFG_CONFIG_SIZE (CFG_DEFAULT_PARSE_SIZE + \ - (2 * CFG_DEFAULT_SSIZE) + \ - (2 * CFG_DEFAULT_PSIZE)) -#ifdef __cplusplus -} -#endif - -#endif /* _CFG_IMPL_H */ |