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/* load-index-cmd.c -- implements the dump-index sub-command.
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#include "svn_ctype.h"
#include "svn_dirent_uri.h"
#include "svn_io.h"
#include "svn_pools.h"
#include "private/svn_fs_fs_private.h"
#include "private/svn_sorts_private.h"
#include "svn_private_config.h"
#include "svnfsfs.h"
/* Map svn_fs_fs__p2l_entry_t.type to C string. */
static const char *item_type_str[]
= {"none", "frep", "drep", "fprop", "dprop", "node", "chgs", "rep"};
/* Reverse lookup in ITEM_TYPE_STR: Set *TYPE to the index that contains STR.
* Return an error for invalid strings. */
static svn_error_t *
str_to_item_type(unsigned *type,
const char *str)
{
unsigned i;
for (i = 0; i < sizeof(item_type_str) / sizeof(item_type_str[0]); ++i)
if (strcmp(item_type_str[i], str) == 0)
{
*type = i;
return SVN_NO_ERROR;
}
return svn_error_createf(SVN_ERR_BAD_TOKEN, NULL,
_("Unknown item type '%s'"), str);
}
/* Parse the string given as const char * at IDX in TOKENS and return its
* value in *VALUE_P. Assume that the string an integer with base RADIX.
* Check for index overflows and non-hex chars.
*/
static svn_error_t *
token_to_i64(apr_int64_t *value_p,
apr_array_header_t *tokens,
int idx,
int radix)
{
const char *hex;
char *end;
apr_int64_t value;
/* Tell the user when there is not enough information. */
SVN_ERR_ASSERT(idx >= 0);
if (tokens->nelts <= idx)
return svn_error_createf(SVN_ERR_INVALID_INPUT, NULL,
_("%i columns needed, %i provided"),
idx + 1, tokens->nelts);
/* hex -> int conversion */
hex = APR_ARRAY_IDX(tokens, idx, const char *);
value = apr_strtoi64(hex, &end, radix);
/* Has the whole token be parsed without error? */
if (errno || *end != '\0')
return svn_error_createf(SVN_ERR_INVALID_INPUT, NULL,
_("%s is not a value HEX string"), hex);
*value_p = value;
return SVN_NO_ERROR;
}
/* Parse the P2L entry given as space separated values in LINE and return it
* in *ENTRY. Ignore extra columns. Allocate the result in RESULT_POOL and
* use SCRATCH_POOL for temporaries.
*/
static svn_error_t *
parse_index_line(svn_fs_fs__p2l_entry_t **entry,
svn_stringbuf_t *line,
apr_pool_t *result_pool,
apr_pool_t *scratch_pool)
{
apr_array_header_t *tokens = svn_cstring_split(line->data, " ", TRUE,
scratch_pool);
svn_fs_fs__p2l_entry_t *result = apr_pcalloc(result_pool, sizeof(*result));
apr_int64_t value;
/* Parse the hex columns. */
SVN_ERR(token_to_i64(&value, tokens, 0, 16));
result->offset = (apr_off_t)value;
SVN_ERR(token_to_i64(&value, tokens, 1, 16));
result->size = (apr_off_t)value;
/* Parse the rightmost colum that we care of. */
SVN_ERR(token_to_i64(&value, tokens, 4, 10));
result->item.number = (apr_uint64_t)value;
/* We now know that there were at least 5 columns.
* Parse the non-hex columns without index check. */
SVN_ERR(str_to_item_type(&result->type,
APR_ARRAY_IDX(tokens, 2, const char *)));
SVN_ERR(svn_revnum_parse(&result->item.revision,
APR_ARRAY_IDX(tokens, 3, const char *), NULL));
*entry = result;
return SVN_NO_ERROR;
}
/* Parse the space separated P2L index table from INPUT, one entry per line.
* Rewrite the respective index files in PATH. Allocate from POOL. */
static svn_error_t *
load_index(const char *path,
svn_stream_t *input,
apr_pool_t *pool)
{
svn_fs_t *fs;
svn_revnum_t revision = SVN_INVALID_REVNUM;
apr_array_header_t *entries = apr_array_make(pool, 16, sizeof(void*));
apr_pool_t *iterpool = svn_pool_create(pool);
svn_fs_fs__ioctl_load_index_input_t ioctl_input = {0};
/* Check repository type and open it. */
SVN_ERR(open_fs(&fs, path, pool));
while (TRUE)
{
svn_stringbuf_t *line;
svn_fs_fs__p2l_entry_t *entry;
svn_boolean_t eol;
/* Get the next line from the input and stop if there is none. */
svn_pool_clear(iterpool);
SVN_ERR(svn_stream_readline(input, &line, "\n", &eol, iterpool));
if (eol)
break;
/* Skip header line(s). They contain the sub-string [Ss]tart. */
if (strstr(line->data, "tart"))
continue;
/* Ignore empty lines (mostly trailing ones but we don't really care).
*/
svn_stringbuf_strip_whitespace(line);
if (line->len == 0)
continue;
/* Parse the entry and append it to ENTRIES. */
SVN_ERR(parse_index_line(&entry, line, pool, iterpool));
APR_ARRAY_PUSH(entries, svn_fs_fs__p2l_entry_t *) = entry;
/* There should be at least one item that is not empty.
* Get a revision from (probably inside) the respective shard. */
if ( revision == SVN_INVALID_REVNUM
&& entry->item.revision != SVN_INVALID_REVNUM)
revision = entry->item.revision;
}
/* Rewrite the indexes. */
ioctl_input.revision = revision;
ioctl_input.entries = entries;
SVN_ERR(svn_fs_ioctl(fs, SVN_FS_FS__IOCTL_LOAD_INDEX, &ioctl_input, NULL,
NULL, NULL, pool, pool));
svn_pool_destroy(iterpool);
return SVN_NO_ERROR;
}
/* This implements `svn_opt_subcommand_t'. */
svn_error_t *
subcommand__load_index(apr_getopt_t *os, void *baton, apr_pool_t *pool)
{
svnfsfs__opt_state *opt_state = baton;
svn_stream_t *input;
SVN_ERR(svn_stream_for_stdin2(&input, TRUE, pool));
SVN_ERR(load_index(opt_state->repository_path, input, pool));
return SVN_NO_ERROR;
}
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