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/*
CLI for BD translator
Copyright IBM, Corp. 2012
This file is part of GlusterFS.
Author:
M. Mohan Kumar <mohan@in.ibm.com>
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "cli.h"
#include "cli-cmd.h"
#include <string.h>
extern rpc_clnt_prog_t *cli_rpc_prog;
int
cli_cmd_bd_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
const char **words, int wordcount);
int32_t
cli_cmd_bd_parse (dict_t *dict, const char **words)
{
char *volname = NULL;
char *buff = NULL;
char *buffp = NULL;
int ret = -1;
char *save = NULL;
char *path = NULL;
char *size = NULL;
char *eptr = NULL;
gf_xl_bd_op_t bd_op = GF_BD_OP_INVALID;
char *dest_lv = NULL;
/* volname:/path */
if (!strchr (words[2], ':') || !strchr (words[2], '/')) {
cli_out ("invalid parameter %s, needs <volname:/path>",
words[2]);
return -1;
}
buff = buffp = gf_strdup (words[2]);
volname = strtok_r (buff, ":", &save);
path = strtok_r (NULL, ":", &save);
ret = dict_set_dynstr (dict, "volname", gf_strdup (volname));
if (ret)
goto out;
ret = dict_set_dynstr (dict, "path", gf_strdup (path));
if (ret)
goto out;
if (!strcasecmp (words[1], "create"))
bd_op = GF_BD_OP_NEW_BD;
else if (!strcasecmp (words[1], "delete"))
bd_op = GF_BD_OP_DELETE_BD;
else if (!strcasecmp (words[1], "clone"))
bd_op = GF_BD_OP_CLONE_BD;
else if (!strcasecmp (words[1], "snapshot"))
bd_op = GF_BD_OP_SNAPSHOT_BD;
else
return -1;
ret = dict_set_int32 (dict, "bd-op", bd_op);
if (ret)
goto out;
if (bd_op == GF_BD_OP_NEW_BD) {
/* If no suffix given we will treat it as MB */
strtoull (words[3], &eptr, 0);
/* no suffix */
if (!eptr[0])
gf_asprintf (&size, "%sMB", words[3]);
else
size = gf_strdup (words[3]);
ret = dict_set_dynstr (dict, "size", size);
if (ret)
goto out;
} else if (bd_op == GF_BD_OP_SNAPSHOT_BD ||
bd_op == GF_BD_OP_CLONE_BD) {
/*
* dest_lv should be just dest_lv, we don't support
* cloning/snapshotting to a different volume or vg
*/
if (strchr (words[3], ':') || strchr (words[3], '/')) {
cli_err ("invalid parameter %s, volname/vg not needed",
words[3]);
ret = -1;
goto out;
}
dest_lv = gf_strdup (words[3]);
ret = dict_set_dynstr (dict, "dest_lv", dest_lv);
if (ret)
goto out;
/* clone needs size as parameter */
if (bd_op == GF_BD_OP_SNAPSHOT_BD) {
ret = dict_set_dynstr (dict, "size",
gf_strdup (words[4]));
if (ret)
goto out;
}
}
ret = 0;
out:
GF_FREE (buffp);
return ret;
}
/*
* bd create <volname>:/path <size>
* bd delete <volname>:/path
* bd clone <volname>:/path <newbd>
* bd snapshot <volname>:/<path> <newbd> <size>
*/
int32_t
cli_cmd_bd_validate (const char **words, int wordcount, dict_t **options)
{
dict_t *dict = NULL;
int ret = -1;
char *op[] = { "create", "delete", "clone", "snapshot", NULL };
int index = 0;
for (index = 0; op[index]; index++)
if (!strcasecmp (words[1], op[index]))
break;
if (!op[index])
return -1;
dict = dict_new ();
if (!dict)
goto out;
if (!strcasecmp (words[1], "create")) {
if (wordcount != 4)
goto out;
} else if (!strcasecmp (words[1], "delete")) {
if (wordcount != 3)
goto out;
} else if (!strcasecmp (words[1], "clone")) {
if (wordcount != 4)
goto out;
} else if (!strcasecmp (words[1], "snapshot")) {
if (wordcount != 5)
goto out;
} else {
ret = -1;
goto out;
}
ret = cli_cmd_bd_parse (dict, words);
if (ret < 0)
goto out;
*options = dict;
ret = 0;
out:
if (ret)
dict_unref (dict);
return ret;
}
int
cli_cmd_bd_cbk (struct cli_state *state, struct cli_cmd_word *word,
const char **words, int wordcount)
{
int ret = -1;
rpc_clnt_procedure_t *proc = NULL;
call_frame_t *frame = NULL;
int sent = 0;
int parse_error = 0;
dict_t *options = NULL;
cli_local_t *local = NULL;
proc = &cli_rpc_prog->proctable[GLUSTER_CLI_BD_OP];
frame = create_frame (THIS, THIS->ctx->pool);
if (!frame)
goto out;
ret = cli_cmd_bd_validate (words, wordcount, &options);
if (ret) {
cli_usage_out (word->pattern);
parse_error = 1;
goto out;
}
CLI_LOCAL_INIT (local, words, frame, options);
if (proc->fn) {
ret = proc->fn (frame, THIS, options);
}
out:
if (options)
dict_unref (options);
if (ret) {
cli_cmd_sent_status_get (&sent);
if ((sent == 0) && (parse_error == 0))
cli_out ("BD op failed!");
}
CLI_STACK_DESTROY (frame);
return ret;
}
struct cli_cmd cli_bd_cmds[] = {
{ "bd help",
cli_cmd_bd_help_cbk,
"display help for bd command"},
{ "bd create <volname>:<bd> <size>",
cli_cmd_bd_cbk,
"\n\tcreate a block device where size can be "
"suffixed with KB, MB etc. Default size is in MB"},
{ "bd delete <volname>:<bd>",
cli_cmd_bd_cbk,
"Delete a block device"},
{ "bd clone <volname>:<bd> <newbd>",
cli_cmd_bd_cbk,
"clone device"},
{ "bd snapshot <volname>:<bd> <newbd> <size>",
cli_cmd_bd_cbk,
"\n\tsnapshot device where size can be "
"suffixed with KB, MB etc. Default size is in MB"},
{ NULL, NULL, NULL }
};
int
cli_cmd_bd_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
const char **words, int wordcount)
{
struct cli_cmd *cmd = NULL;
for (cmd = cli_bd_cmds; cmd->pattern; cmd++)
if (_gf_false == cmd->disable)
cli_out ("%s - %s", cmd->pattern, cmd->desc);
return 0;
}
int
cli_cmd_bd_register (struct cli_state *state)
{
int ret = 0;
struct cli_cmd *cmd = NULL;
for (cmd = cli_bd_cmds; cmd->pattern; cmd++) {
ret = cli_cmd_register (&state->tree, cmd);
if (ret)
goto out;
}
out:
return ret;
}
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