diff --git a/lib/format_text/format-text.c b/lib/format_text/format-text.c new file mode 100644 index 000000000..7a4439a9a --- /dev/null +++ b/lib/format_text/format-text.c @@ -0,0 +1,164 @@ +/* + * Copyright (C) 2001 Sistina Software (UK) Limited. + * + * This file is released under the LGPL. + */ + +#include "format-text.h" + +#include "log.h" +#include "pool.h" +#include "config.h" +#include "hash.h" + +/* + * The text format is a human readable metadata + * format that will be used to store the metadata + * backups from the LVM2 system. By being human + * readable it is hoped that people will be able + * to recieve a lot more support when things go + * wrong. + * + * The format instance is given a directory path + * upon creation. Each file in this directory + * whose name is of the form '*.vg' is a config + * file (see lib/config.[hc]), which contains a + * description of a single volume group. + * + * The prefix of the config file gives the volume group + * name. + */ + + +struct text_c { + char *dir; +}; + + + +/* + * Returns a list of config files, one for each + * .vg file in the given directory. + */ +struct config_list { + struct list list; + struct config_file *cf; +}; + +struct list *_get_configs(struct pool *mem, const char *dir) +{ + +} + +void _put_configs(struct pool *mem, struct list *configs) +{ + struct list *cfh; + struct config_list *cl; + + list_iterate(cfh, configs) { + cl = list_item(cfh, struct config_file); + destroy_config_file(cl->cf); + } + + pool_free(mem, configs); +} + + +/* + * Just returns the vg->name fields +struct list *get_vgs(struct format_instance *fi) +{ + struct text_c *tc = (struct text_c *) fi->private; + + +} + +struct list *get_pvs(struct format_instance *fi) +{ + +} + +struct physical_volume *pv_read(struct format_instance *fi, + const char *pv_name) +{ + +} + +int pv_setup(struct format_instance *fi, struct physical_volume *pv, + struct volume_group *vg) +{ + +} + +int pv_write(struct format_instance *fi, struct physical_volume *pv) +{ + +} + +int vg_setup(struct format_instance *fi, struct volume_group *vg) +{ + +} + +struct volume_group *vg_read(struct format_instance *fi, const char *vg_name) +{ + +} + +int vg_write(struct format_instance *fi, struct volume_group *vg) +{ + +} + +void destroy(struct format_instance *fi) +{ + /* + * We don't need to do anything here since + * everything is allocated from the pool. + */ +} + + +static struct format_handler _text_handler = { + get_vgs: _get_vgs, + get_pvs: _get_pvs, + pv_read: _pv_read, + pv_setup: _pv_setup, + pv_write: _pv_write, + vg_setup: _vg_setup, + vg_read: _vg_read, + vg_write: _vg_write, + destroy: _destroy +}; + +struct format_instance *text_format_create(struct cmd_context *cmd, + const char *dir) +{ + struct format_instance *fi; + struct text_c *tc = NULL; + + if (!(tc = pool_zalloc(cmd->mem, sizeof(*tc)))) { + stack; + return NULL; + } + + if (!(tc->dir = pool_strdup(cmd->mem, dir))) { + stack; + goto bad; + } + + if (!(fi = pool_alloc(cmd->mem, sizeof(*fi)))) { + stack; + goto bad; + } + + fi->cmd = cmd; + fi->ops = _text_handler; + fi->private = tc; + + return fi; + + bad: + pool_free(mem, tc); + return NULL; +} diff --git a/lib/format_text/format-text.h b/lib/format_text/format-text.h new file mode 100644 index 000000000..7121ec67b --- /dev/null +++ b/lib/format_text/format-text.h @@ -0,0 +1,13 @@ +/* + * Copyright (C) 2001 Sistina Software (UK) Limited. + * + * This file is released under the LGPL. + */ + +#ifndef _LVM_FORMAT_TEXT_H +#define _LVM_FORMAT_TEXT_H + +struct format_instance *text_format_create(struct cmd_context, + const char *dir); + +#endif diff --git a/lib/format_text/import-export.c b/lib/format_text/import-export.c new file mode 100644 index 000000000..ffeacddbb --- /dev/null +++ b/lib/format_text/import-export.c @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2001 Sistina Software (UK) Limited. + * + * This file is released under the LGPL. + */ + +#include "text-rep.h" + +struct volume_group *text_vg_import(struct pool *mem, struct config_file *cf) +{ + log_err("text_vg_import not implemented yet."); + return NULL; +} + +struct config_file *text_vg_export(struct pool *mem, struct volume_group *vg) +{ + +} + diff --git a/lib/format_text/import-export.h b/lib/format_text/import-export.h new file mode 100644 index 000000000..766ebabbd --- /dev/null +++ b/lib/format_text/import-export.h @@ -0,0 +1,13 @@ +/* + * Copyright (C) 2001 Sistina Software (UK) Limited. + * + * This file is released under the LGPL. + */ + +#ifndef _LVM_TEXT_IMPORT_EXPORT_H +#define _LVM_TEXT_IMPORT_EXPORT_H + +struct volume_group *text_vg_import(struct pool *mem, struct config_file *cf); +struct config_file *text_vg_export(struct pool *mem, struct volume_group *vg); + +#endif diff --git a/lib/format_text/sample.vg b/lib/format_text/sample.vg new file mode 100644 index 000000000..d44b453c3 --- /dev/null +++ b/lib/format_text/sample.vg @@ -0,0 +1,49 @@ +# An example volume group + +vg { + id = "ksjdlfksjldskjlsk" + name = "sample_volume_group" + + status = [???] + + extent_size = 8192 # 4M + extent_count = 1024 + free_count = 430 + + max_lv = 99 + max_pv = 255 + + physical_volumes = ["pv1", "pv2"] + logical_volumes = ["lv1", "lv2"] +} + +pv1 { + id = "lksjdflksdlsk" + + major = 123 + minor = 23 + + status = [???] + size = ?? + + pe_start = 8192 + pe_count = 300 + pe_allocated = 30 +} + +lv1 { + id = "lksdflskj" + name = "music" + + status = [???] + read_ahead = 1024 + stripes = 1 + + size = ?? + le_count = 30 + + map = ["pv1", 0, + "pv2", 1, + ... + ] +} \ No newline at end of file