/* 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; }