diff options
Diffstat (limited to 'fsck.c')
| -rw-r--r-- | fsck.c | 255 |
1 files changed, 218 insertions, 37 deletions
@@ -1,4 +1,6 @@ #include "cache.h" +#include "object-store.h" +#include "repository.h" #include "object.h" #include "blob.h" #include "tree.h" @@ -10,6 +12,14 @@ #include "utf8.h" #include "sha1-array.h" #include "decorate.h" +#include "oidset.h" +#include "packfile.h" +#include "submodule-config.h" +#include "config.h" +#include "help.h" + +static struct oidset gitmodules_found = OIDSET_INIT; +static struct oidset gitmodules_done = OIDSET_INIT; #define FSCK_FATAL -1 #define FSCK_INFO -2 @@ -44,6 +54,7 @@ FUNC(MISSING_TAG_ENTRY, ERROR) \ FUNC(MISSING_TAG_OBJECT, ERROR) \ FUNC(MISSING_TREE, ERROR) \ + FUNC(MISSING_TREE_OBJECT, ERROR) \ FUNC(MISSING_TYPE, ERROR) \ FUNC(MISSING_TYPE_ENTRY, ERROR) \ FUNC(MULTIPLE_AUTHORS, ERROR) \ @@ -51,6 +62,11 @@ FUNC(TREE_NOT_SORTED, ERROR) \ FUNC(UNKNOWN_TYPE, ERROR) \ FUNC(ZERO_PADDED_DATE, ERROR) \ + FUNC(GITMODULES_MISSING, ERROR) \ + FUNC(GITMODULES_BLOB, ERROR) \ + FUNC(GITMODULES_LARGE, ERROR) \ + FUNC(GITMODULES_NAME, ERROR) \ + FUNC(GITMODULES_SYMLINK, ERROR) \ /* warnings */ \ FUNC(BAD_FILEMODE, WARN) \ FUNC(EMPTY_NAME, WARN) \ @@ -62,6 +78,7 @@ FUNC(ZERO_PADDED_FILEMODE, WARN) \ FUNC(NUL_IN_COMMIT, WARN) \ /* infos (reported as warnings, but ignored by default) */ \ + FUNC(GITMODULES_PARSE, INFO) \ FUNC(BAD_TAG_NAME, INFO) \ FUNC(MISSING_TAGGER_ENTRY, INFO) @@ -73,37 +90,60 @@ enum fsck_msg_id { #undef MSG_ID #define STR(x) #x -#define MSG_ID(id, msg_type) { STR(id), NULL, FSCK_##msg_type }, +#define MSG_ID(id, msg_type) { STR(id), NULL, NULL, FSCK_##msg_type }, static struct { const char *id_string; const char *downcased; + const char *camelcased; int msg_type; } msg_id_info[FSCK_MSG_MAX + 1] = { FOREACH_MSG_ID(MSG_ID) - { NULL, NULL, -1 } + { NULL, NULL, NULL, -1 } }; #undef MSG_ID -static int parse_msg_id(const char *text) +static void prepare_msg_ids(void) { int i; - if (!msg_id_info[0].downcased) { - /* convert id_string to lower case, without underscores. */ - for (i = 0; i < FSCK_MSG_MAX; i++) { - const char *p = msg_id_info[i].id_string; - int len = strlen(p); - char *q = xmalloc(len); - - msg_id_info[i].downcased = q; - while (*p) - if (*p == '_') - p++; - else - *(q)++ = tolower(*(p)++); - *q = '\0'; + if (msg_id_info[0].downcased) + return; + + /* convert id_string to lower case, without underscores. */ + for (i = 0; i < FSCK_MSG_MAX; i++) { + const char *p = msg_id_info[i].id_string; + int len = strlen(p); + char *q = xmalloc(len); + + msg_id_info[i].downcased = q; + while (*p) + if (*p == '_') + p++; + else + *(q)++ = tolower(*(p)++); + *q = '\0'; + + p = msg_id_info[i].id_string; + q = xmalloc(len); + msg_id_info[i].camelcased = q; + while (*p) { + if (*p == '_') { + p++; + if (*p) + *q++ = *p++; + } else { + *q++ = tolower(*p++); + } } + *q = '\0'; } +} + +static int parse_msg_id(const char *text) +{ + int i; + + prepare_msg_ids(); for (i = 0; i < FSCK_MSG_MAX; i++) if (!strcmp(text, msg_id_info[i].downcased)) @@ -112,6 +152,16 @@ static int parse_msg_id(const char *text) return -1; } +void list_config_fsck_msg_ids(struct string_list *list, const char *prefix) +{ + int i; + + prepare_msg_ids(); + + for (i = 0; i < FSCK_MSG_MAX; i++) + list_config_item(list, prefix, msg_id_info[i].camelcased); +} + static int fsck_msg_type(enum fsck_msg_id msg_id, struct fsck_options *options) { @@ -268,6 +318,13 @@ static void append_msg_id(struct strbuf *sb, const char *msg_id) strbuf_addstr(sb, ": "); } +static int object_on_skiplist(struct fsck_options *opts, struct object *obj) +{ + if (opts && opts->skiplist && obj) + return oid_array_lookup(opts->skiplist, &obj->oid) >= 0; + return 0; +} + __attribute__((format (printf, 4, 5))) static int report(struct fsck_options *options, struct object *object, enum fsck_msg_id id, const char *fmt, ...) @@ -279,8 +336,7 @@ static int report(struct fsck_options *options, struct object *object, if (msg_type == FSCK_IGNORE) return 0; - if (options->skiplist && object && - oid_array_lookup(options->skiplist, &object->oid) >= 0) + if (object_on_skiplist(options, object)) return 0; if (msg_type == FSCK_FATAL) @@ -358,14 +414,14 @@ static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *op continue; if (S_ISDIR(entry.mode)) { - obj = (struct object *)lookup_tree(entry.oid); + obj = (struct object *)lookup_tree(the_repository, entry.oid); if (name && obj) put_object_name(options, obj, "%s%s/", name, entry.path); result = options->walk(obj, OBJ_TREE, data, options); } else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) { - obj = (struct object *)lookup_blob(entry.oid); + obj = (struct object *)lookup_blob(the_repository, entry.oid); if (name && obj) put_object_name(options, obj, "%s%s", name, entry.path); @@ -463,7 +519,7 @@ int fsck_walk(struct object *obj, void *data, struct fsck_options *options) return -1; if (obj->type == OBJ_NONE) - parse_object(&obj->oid); + parse_object(the_repository, &obj->oid); switch (obj->type) { case OBJ_BLOB: @@ -563,10 +619,18 @@ static int fsck_tree(struct tree *item, struct fsck_options *options) has_empty_name |= !*name; has_dot |= !strcmp(name, "."); has_dotdot |= !strcmp(name, ".."); - has_dotgit |= (!strcmp(name, ".git") || - is_hfs_dotgit(name) || - is_ntfs_dotgit(name)); + has_dotgit |= is_hfs_dotgit(name) || is_ntfs_dotgit(name); has_zero_pad |= *(char *)desc.buffer == '0'; + + if (is_hfs_dotgitmodules(name) || is_ntfs_dotgitmodules(name)) { + if (!S_ISLNK(mode)) + oidset_insert(&gitmodules_found, oid); + else + retval += report(options, &item->object, + FSCK_MSG_GITMODULES_SYMLINK, + ".gitmodules is a symbolic link"); + } + if (update_tree_entry_gently(&desc)) { retval += report(options, &item->object, FSCK_MSG_BAD_TREE, "cannot be parsed as a tree"); break; @@ -713,33 +777,34 @@ static int fsck_ident(const char **ident, struct object *obj, struct fsck_option static int fsck_commit_buffer(struct commit *commit, const char *buffer, unsigned long size, struct fsck_options *options) { - unsigned char tree_sha1[20], sha1[20]; + struct object_id tree_oid, oid; struct commit_graft *graft; unsigned parent_count, parent_line_count = 0, author_count; int err; const char *buffer_begin = buffer; + const char *p; if (verify_headers(buffer, size, &commit->object, options)) return -1; if (!skip_prefix(buffer, "tree ", &buffer)) return report(options, &commit->object, FSCK_MSG_MISSING_TREE, "invalid format - expected 'tree' line"); - if (get_sha1_hex(buffer, tree_sha1) || buffer[40] != '\n') { + if (parse_oid_hex(buffer, &tree_oid, &p) || *p != '\n') { err = report(options, &commit->object, FSCK_MSG_BAD_TREE_SHA1, "invalid 'tree' line format - bad sha1"); if (err) return err; } - buffer += 41; + buffer = p + 1; while (skip_prefix(buffer, "parent ", &buffer)) { - if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { + if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') { err = report(options, &commit->object, FSCK_MSG_BAD_PARENT_SHA1, "invalid 'parent' line format - bad sha1"); if (err) return err; } - buffer += 41; + buffer = p + 1; parent_line_count++; } - graft = lookup_commit_graft(&commit->object.oid); + graft = lookup_commit_graft(the_repository, &commit->object.oid); parent_count = commit_list_count(commit->parents); if (graft) { if (graft->nr_parent == -1 && !parent_count) @@ -775,7 +840,7 @@ static int fsck_commit_buffer(struct commit *commit, const char *buffer, if (err) return err; if (!get_commit_tree(commit)) { - err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", sha1_to_hex(tree_sha1)); + err = report(options, &commit->object, FSCK_MSG_BAD_TREE, "could not load commit's tree %s", oid_to_hex(&tree_oid)); if (err) return err; } @@ -801,11 +866,12 @@ static int fsck_commit(struct commit *commit, const char *data, static int fsck_tag_buffer(struct tag *tag, const char *data, unsigned long size, struct fsck_options *options) { - unsigned char sha1[20]; + struct object_id oid; int ret = 0; const char *buffer; char *to_free = NULL, *eol; struct strbuf sb = STRBUF_INIT; + const char *p; if (data) buffer = data; @@ -813,7 +879,7 @@ static int fsck_tag_buffer(struct tag *tag, const char *data, enum object_type type; buffer = to_free = - read_sha1_file(tag->object.oid.hash, &type, &size); + read_object_file(&tag->object.oid, &type, &size); if (!buffer) return report(options, &tag->object, FSCK_MSG_MISSING_TAG_OBJECT, @@ -836,12 +902,12 @@ static int fsck_tag_buffer(struct tag *tag, const char *data, ret = report(options, &tag->object, FSCK_MSG_MISSING_OBJECT, "invalid format - expected 'object' line"); goto done; } - if (get_sha1_hex(buffer, sha1) || buffer[40] != '\n') { + if (parse_oid_hex(buffer, &oid, &p) || *p != '\n') { ret = report(options, &tag->object, FSCK_MSG_BAD_OBJECT_SHA1, "invalid 'object' line format - bad sha1"); if (ret) goto done; } - buffer += 41; + buffer = p + 1; if (!skip_prefix(buffer, "type ", &buffer)) { ret = report(options, &tag->object, FSCK_MSG_MISSING_TYPE_ENTRY, "invalid format - expected 'type' line"); @@ -903,6 +969,71 @@ static int fsck_tag(struct tag *tag, const char *data, return fsck_tag_buffer(tag, data, size, options); } +struct fsck_gitmodules_data { + struct object *obj; + struct fsck_options *options; + int ret; +}; + +static int fsck_gitmodules_fn(const char *var, const char *value, void *vdata) +{ + struct fsck_gitmodules_data *data = vdata; + const char *subsection, *key; + int subsection_len; + char *name; + + if (parse_config_key(var, "submodule", &subsection, &subsection_len, &key) < 0 || + !subsection) + return 0; + + name = xmemdupz(subsection, subsection_len); + if (check_submodule_name(name) < 0) + data->ret |= report(data->options, data->obj, + FSCK_MSG_GITMODULES_NAME, + "disallowed submodule name: %s", + name); + free(name); + + return 0; +} + +static int fsck_blob(struct blob *blob, const char *buf, + unsigned long size, struct fsck_options *options) +{ + struct fsck_gitmodules_data data; + struct config_options config_opts = { 0 }; + + if (!oidset_contains(&gitmodules_found, &blob->object.oid)) + return 0; + oidset_insert(&gitmodules_done, &blob->object.oid); + + if (object_on_skiplist(options, &blob->object)) + return 0; + + if (!buf) { + /* + * A missing buffer here is a sign that the caller found the + * blob too gigantic to load into memory. Let's just consider + * that an error. + */ + return report(options, &blob->object, + FSCK_MSG_GITMODULES_LARGE, + ".gitmodules too large to parse"); + } + + data.obj = &blob->object; + data.options = options; + data.ret = 0; + config_opts.error_action = CONFIG_ERROR_SILENT; + if (git_config_from_mem(fsck_gitmodules_fn, CONFIG_ORIGIN_BLOB, + ".gitmodules", buf, size, &data, &config_opts)) + data.ret |= report(options, &blob->object, + FSCK_MSG_GITMODULES_PARSE, + "could not parse gitmodules blob"); + + return data.ret; +} + int fsck_object(struct object *obj, void *data, unsigned long size, struct fsck_options *options) { @@ -910,7 +1041,7 @@ int fsck_object(struct object *obj, void *data, unsigned long size, return report(options, obj, FSCK_MSG_BAD_OBJECT_SHA1, "no valid object to fsck"); if (obj->type == OBJ_BLOB) - return 0; + return fsck_blob((struct blob *)obj, data, size, options); if (obj->type == OBJ_TREE) return fsck_tree((struct tree *) obj, options); if (obj->type == OBJ_COMMIT) @@ -934,3 +1065,53 @@ int fsck_error_function(struct fsck_options *o, error("object %s: %s", describe_object(o, obj), message); return 1; } + +int fsck_finish(struct fsck_options *options) +{ + int ret = 0; + struct oidset_iter iter; + const struct object_id *oid; + + oidset_iter_init(&gitmodules_found, &iter); + while ((oid = oidset_iter_next(&iter))) { + struct blob *blob; + enum object_type type; + unsigned long size; + char *buf; + + if (oidset_contains(&gitmodules_done, oid)) + continue; + + blob = lookup_blob(the_repository, oid); + if (!blob) { + struct object *obj = lookup_unknown_object(oid->hash); + ret |= report(options, obj, + FSCK_MSG_GITMODULES_BLOB, + "non-blob found at .gitmodules"); + continue; + } + + buf = read_object_file(oid, &type, &size); + if (!buf) { + if (is_promisor_object(&blob->object.oid)) + continue; + ret |= report(options, &blob->object, + FSCK_MSG_GITMODULES_MISSING, + "unable to read .gitmodules blob"); + continue; + } + + if (type == OBJ_BLOB) + ret |= fsck_blob(blob, buf, size, options); + else + ret |= report(options, &blob->object, + FSCK_MSG_GITMODULES_BLOB, + "non-blob found at .gitmodules"); + free(buf); + } + + + oidset_clear(&gitmodules_found); + oidset_clear(&gitmodules_done); + return ret; +} |