diff options
| -rw-r--r-- | block/vvfat.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/block/vvfat.c b/block/vvfat.c index e4df255..1de5de1 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -100,30 +100,26 @@ static inline void array_free(array_t* array) /* does not automatically grow */ static inline void* array_get(array_t* array,unsigned int index) { assert(index < array->next); + assert(array->pointer); return array->pointer + index * array->item_size; } -static inline int array_ensure_allocated(array_t* array, int index) +static inline void array_ensure_allocated(array_t *array, int index) { if((index + 1) * array->item_size > array->size) { int new_size = (index + 32) * array->item_size; array->pointer = g_realloc(array->pointer, new_size); - if (!array->pointer) - return -1; + assert(array->pointer); memset(array->pointer + array->size, 0, new_size - array->size); array->size = new_size; array->next = index + 1; } - - return 0; } static inline void* array_get_next(array_t* array) { unsigned int next = array->next; - if (array_ensure_allocated(array, next) < 0) - return NULL; - + array_ensure_allocated(array, next); array->next = next + 1; return array_get(array, next); } @@ -2422,16 +2418,13 @@ static int commit_direntries(BDRVVVFATState* s, direntry_t* direntry = array_get(&(s->directory), dir_index); uint32_t first_cluster = dir_index == 0 ? 0 : begin_of_direntry(direntry); mapping_t* mapping = find_mapping_for_cluster(s, first_cluster); - int factor = 0x10 * s->sectors_per_cluster; int old_cluster_count, new_cluster_count; - int current_dir_index = mapping->info.dir.first_dir_index; - int first_dir_index = current_dir_index; + int current_dir_index; + int first_dir_index; int ret, i; uint32_t c; -DLOG(fprintf(stderr, "commit_direntries for %s, parent_mapping_index %d\n", mapping->path, parent_mapping_index)); - assert(direntry); assert(mapping); assert(mapping->begin == first_cluster); @@ -2439,6 +2432,11 @@ DLOG(fprintf(stderr, "commit_direntries for %s, parent_mapping_index %d\n", mapp assert(mapping->mode & MODE_DIRECTORY); assert(dir_index == 0 || is_directory(direntry)); + DLOG(fprintf(stderr, "commit_direntries for %s, parent_mapping_index %d\n", + mapping->path, parent_mapping_index)); + + current_dir_index = mapping->info.dir.first_dir_index; + first_dir_index = current_dir_index; mapping->info.dir.parent_mapping_index = parent_mapping_index; if (first_cluster == 0) { @@ -2488,6 +2486,9 @@ DLOG(fprintf(stderr, "commit_direntries for %s, parent_mapping_index %d\n", mapp direntry = array_get(&(s->directory), first_dir_index + i); if (is_directory(direntry) && !is_dot(direntry)) { mapping = find_mapping_for_cluster(s, first_cluster); + if (mapping == NULL) { + return -1; + } assert(mapping->mode & MODE_DIRECTORY); ret = commit_direntries(s, first_dir_index + i, array_index(&(s->mapping), mapping)); @@ -2516,6 +2517,10 @@ static int commit_one_file(BDRVVVFATState* s, assert(offset < size); assert((offset % s->cluster_size) == 0); + if (mapping == NULL) { + return -1; + } + for (i = s->cluster_size; i < offset; i += s->cluster_size) c = modified_fat_get(s, c); @@ -2662,8 +2667,12 @@ static int handle_renames_and_mkdirs(BDRVVVFATState* s) if (commit->action == ACTION_RENAME) { mapping_t* mapping = find_mapping_for_cluster(s, commit->param.rename.cluster); - char* old_path = mapping->path; + char *old_path; + if (mapping == NULL) { + return -1; + } + old_path = mapping->path; assert(commit->path); mapping->path = commit->path; if (rename(old_path, mapping->path)) @@ -2684,10 +2693,15 @@ static int handle_renames_and_mkdirs(BDRVVVFATState* s) direntry_t* d = direntry + i; if (is_file(d) || (is_directory(d) && !is_dot(d))) { + int l; + char *new_path; mapping_t* m = find_mapping_for_cluster(s, begin_of_direntry(d)); - int l = strlen(m->path); - char* new_path = g_malloc(l + diff + 1); + if (m == NULL) { + return -1; + } + l = strlen(m->path); + new_path = g_malloc(l + diff + 1); assert(!strncmp(m->path, mapping->path, l2)); |