X-Git-Url: http://git.tuebingen.mpg.de/?p=adu.git;a=blobdiff_plain;f=adu.c;h=b8c7b68f905b2448aa069eb2d6820e029ca42baf;hp=9b800eaf1cb2e75b6b990ba7976049d7d0e82c15;hb=66f28f8d1a9562cdba6f1611a06f23f13ee15469;hpb=1e011e70ba87fe6999a372b5c79c706e982b0316;ds=sidebyside diff --git a/adu.c b/adu.c index 9b800ea..b8c7b68 100644 --- a/adu.c +++ b/adu.c @@ -1,216 +1,57 @@ +/* + * Copyright (C) 2008 Andre Noll + * + * Licensed under the GPL v2. For licencing details see COPYING. + */ + +/** \file adu.c \brief The main functions used by all modes of operation. */ + +/** + * \mainpage adu API reference + * + * - Modes of operation: \ref select.c, \ref create.c, \ref interactive.c + * - User handling: \ref user.c + * - Error handling: \ref error.h + * - Library-type functions: \ref fd.c, \ref format.c, \ref string.c, \ref portable_io.h + * - Generated files: \ref cmdline.h, \ref select.cmdline.h + */ + #include "adu.h" #include /* readdir() */ - -#include "gcc-compat.h" +#include +#include "format.h" +#include "user.h" +#include "select.cmdline.h" +#include "select.h" #include "cmdline.h" #include "fd.h" #include "string.h" #include "error.h" -#include "portable_io.h" +/** Define the array of error descriptions. */ DEFINE_ERRLIST; -int osl_errno; - -/** Command line and config file options. */ -static struct gengetopt_args_info conf; - -enum uid_info_flags { - /** whether this slot of the hash table is used. */ - UI_FL_SLOT_USED = 1, - /** whether this uid should be taken into account. */ - UI_FL_ADMISSIBLE = 2, -}; - -struct user_info { - uint32_t uid; - uint32_t flags; - struct osl_table *table; - uint64_t files; - uint64_t bytes; - uint64_t dirs; - struct osl_table_description *desc; -}; - -/** The decimal representation of an uint64_t never exceeds that size. */ -#define FORMATED_VALUE_SIZE 25 - /** - * Contains info for each user that owns at least one regular file. + * The error code of the last osl library function. * - * Even users that are not taken into account because of the --uid - * option occupy a slot in this hash table. This allows to find out - * quicky whether a uid is admissible. And yes, this has to be fast. + * \sa osl(). */ -static struct user_info *uid_hash_table; - -/* these get filled in by the select command. */ -static char count_unit_buf[4] = "( )", size_unit_buf[4] = "( )"; - -static inline int ui_used(struct user_info *ui) -{ - return ui->flags & UI_FL_SLOT_USED; -} - -static inline int ui_admissible(struct user_info *ui) -{ - return ui->flags & UI_FL_ADMISSIBLE; -} - -struct uid_range { - uint32_t low; - uint32_t high; -}; - -static struct uid_range *admissible_uids; - -static inline int check_uid_arg(const char *arg, uint32_t *uid) -{ - const uint32_t max = ~0U; - /* - * we need an 64-bit int for string -> uid conversion because strtoll() - * returns a signed value. - */ - int64_t val; - int ret = para_atoi64(arg, &val); - - if (ret < 0) - return ret; - if (val < 0 || val > max) - return -ERRNO_TO_ERROR(EINVAL); - *uid = val; - return 1; -} - -static int parse_uid_range(const char *orig_arg, struct uid_range *ur) -{ - int ret; - char *arg = para_strdup(orig_arg), *p = strchr(arg, '-'); - - if (!p || p == arg) { /* -42 or 42 */ - ret = check_uid_arg(p? p + 1 : arg, &ur->high); - if (ret < 0) - goto out; - ur->low = p? 0 : ur->high; - ret = 1; - goto out; - } - /* 42- or 42-4711 */ - *p = '\0'; - p++; - ret = check_uid_arg(arg, &ur->low); - if (ret < 0) - goto out; - ur->high = ~0U; - if (*p) { /* 42-4711 */ - ret = check_uid_arg(p, &ur->high); - if (ret < 0) - goto out; - } - if (ur->low > ur->high) - ret = -ERRNO_TO_ERROR(EINVAL); -out: - if (ret < 0) - ERROR_LOG("bad uid option: %s\n", orig_arg); - else - INFO_LOG("admissible uid range: %u - %u\n", ur->low, - ur->high); - free(arg); - return ret; -} - - -/** evaluates to 1 if x < y, to -1 if x > y and to 0 if x == y */ -#define NUM_COMPARE(x, y) ((int)((x) < (y)) - (int)((x) > (y))) +int osl_errno; -/** - * The log function. - * - * \param ll Loglevel. - * \param fml Usual format string. - * - * All XXX_LOG() macros use this function. - */ -__printf_2_3 void __log(int ll, const char* fmt,...) -{ - va_list argp; - FILE *outfd; - struct tm *tm; - time_t t1; - char str[255] = ""; +/** In case a signal is received, its number is stored here. */ +static int signum; - if (ll < conf.loglevel_arg) - return; - outfd = stderr; - time(&t1); - tm = localtime(&t1); - strftime(str, sizeof(str), "%b %d %H:%M:%S", tm); - fprintf(outfd, "%s ", str); - va_start(argp, fmt); - vfprintf(outfd, fmt, argp); - va_end(argp); -} +/** Command line and config file options. */ +struct gengetopt_args_info conf; -/** - * Compare the size of two directories - * - * \param obj1 Pointer to the first object. - * \param obj2 Pointer to the second object. - * - * This function first compares the size values as usual integers. If they compare as - * equal, the address of \a obj1 and \a obj2 are compared. So this compare function - * returns zero if and only if \a obj1 and \a obj2 point to the same memory area. - */ -static int size_compare(const struct osl_object *obj1, const struct osl_object *obj2) -{ - uint64_t d1 = *(uint64_t *)obj1->data; - uint64_t d2 = *(uint64_t *)obj2->data; - int ret = NUM_COMPARE(d2, d1); +/** Options passed to --select-options. */ +struct select_args_info select_conf; - if (ret) - return ret; - //INFO_LOG("addresses: %p, %p\n", obj1->data, obj2->data); - return NUM_COMPARE(obj2->data, obj1->data); -} /** - * Compare two osl objects pointing to unsigned integers of 64 bit size. - * - * \param obj1 Pointer to the first integer. - * \param obj2 Pointer to the second integer. - * - * \return The values required for an osl compare function. - * - * \sa osl_compare_func, osl_hash_compare(). + * The table containing the directory names and statistics. */ -static int uint64_compare(const struct osl_object *obj1, - const struct osl_object *obj2) -{ - uint64_t d1 = read_u64((const char *)obj1->data); - uint64_t d2 = read_u64((const char *)obj2->data); - - if (d1 < d2) - return 1; - if (d1 > d2) - return -1; - return 0; -} - -/** The columns of the directory table. */ -enum dir_table_columns { - /** The name of the directory. */ - DT_NAME, - /** The dir count number. */ - DT_NUM, - /** The number of the parent directory. */ - DT_PARENT_NUM, - /** The number of bytes of all regular files. */ - DT_BYTES, - /** The number of all regular files. */ - DT_FILES, - /** Number of columns in this table. */ - NUM_DT_COLUMNS -}; +struct osl_table *dir_table = NULL; static struct osl_column_description dir_table_cols[] = { [DT_NAME] = { @@ -255,783 +96,32 @@ static struct osl_table_description dir_table_desc = { .column_descriptions = dir_table_cols, }; -/** The columns of the id table. */ -enum user_table_columns { - /** The numer of the directory. */ - UT_DIR_NUM, - /** The number of bytes of all regular files in this dir owned by this id. */ - UT_BYTES, - /** The number of files in this dir owned by this id. */ - UT_FILES, - /** Number of columns in this table. */ - NUM_UT_COLUMNS -}; - -static struct osl_column_description user_table_cols[] = { - [UT_DIR_NUM] = { - .storage_type = OSL_MAPPED_STORAGE, - .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE, - .name = "dir_num", - .compare_function = uint64_compare, - .data_size = sizeof(uint64_t) - }, - [UT_BYTES] = { - .storage_type = OSL_MAPPED_STORAGE, - .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE, - .compare_function = size_compare, - .name = "num_bytes", - .data_size = sizeof(uint64_t) - }, - [UT_FILES] = { - .storage_type = OSL_MAPPED_STORAGE, - .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE, - .compare_function = size_compare, - .name = "num_files", - .data_size = sizeof(uint64_t) - }, -}; - -static struct osl_table *dir_table; - -static int add_directory(char *dirname, uint64_t *dir_num, uint64_t *parent_dir_num, - uint64_t *dir_size, uint64_t *dir_files) -{ - struct osl_object dir_objects[NUM_DT_COLUMNS]; - - INFO_LOG("adding #%llu: %s\n", (long long unsigned)*dir_num, dirname); - dir_objects[DT_NAME].data = dirname; - dir_objects[DT_NAME].size = strlen(dirname) + 1; - dir_objects[DT_NUM].data = dir_num; - dir_objects[DT_NUM].size = sizeof(*dir_num); - dir_objects[DT_PARENT_NUM].data = parent_dir_num; - dir_objects[DT_PARENT_NUM].size = sizeof(*parent_dir_num); - dir_objects[DT_BYTES].data = dir_size; - dir_objects[DT_BYTES].size = sizeof(*dir_size); - dir_objects[DT_FILES].data = dir_files; - dir_objects[DT_FILES].size = sizeof(*dir_files); - return osl(osl_add_row(dir_table, dir_objects)); -} - -static uint32_t num_uids; - -static int open_user_table(struct user_info *ui, int create) -{ - int ret; - - ui->desc = para_malloc(sizeof(*ui->desc)); - ui->desc->num_columns = NUM_UT_COLUMNS; - ui->desc->flags = 0; - ui->desc->column_descriptions = user_table_cols; - ui->desc->dir = para_strdup(conf.database_dir_arg); - ui->desc->name = make_message("%u", (unsigned)ui->uid); - INFO_LOG(".............................uid #%u: %u\n", - (unsigned)num_uids, (unsigned)ui->uid); - if (create) { - ret = osl(osl_create_table(ui->desc)); - if (ret < 0) - goto err; - num_uids++; - } - ret = osl(osl_open_table(ui->desc, &ui->table)); - if (ret < 0) - goto err; - return 1; -err: - free((char *)ui->desc->name); - free((char *)ui->desc->dir); - free(ui->desc); - ui->desc->name = NULL; - ui->desc->dir = NULL; - ui->desc = NULL; - ui->table = NULL; - ui->flags = 0; - return ret; -} - -#define uid_hash_bits 8 -static uint32_t uid_hash_table_size = 1 << uid_hash_bits; -#define PRIME1 0x811c9dc5 -#define PRIME2 0x01000193 - -static void create_hash_table(void) -{ - uid_hash_table = para_calloc(uid_hash_table_size - * sizeof(struct user_info)); -} - -static void free_hash_table(void) -{ - free(uid_hash_table); - uid_hash_table = NULL; -} - -static int create_tables(void) -{ - int ret; - - dir_table_desc.dir = para_strdup(conf.database_dir_arg); - ret = osl(osl_create_table(&dir_table_desc)); - if (ret < 0) - return ret; - create_hash_table(); - return 1; -} - -/* - * We use a hash table of size s=2^uid_hash_bits to map the uids into the - * interval [0..s]. Hash collisions are treated by open addressing, i.e. - * unused slots in the table are used to store different uids that hash to the - * same slot. +/** + * The log function. * - * If a hash collision occurs, different slots are successively probed in order - * to find an unused slot for the new uid. Probing is implemented via a second - * hash function that maps the uid to h=(uid * PRIME2) | 1, which is always an - * odd number. + * \param ll Loglevel. + * \param fmt Usual format string. * - * An odd number is sufficient to make sure each entry of the hash table gets - * probed for probe_num between 0 and s-1 because s is a power of two, hence - * the second hash value has never a common divisor with the hash table size. - * IOW: h is invertible in the ring [0..s]. + * All XXX_LOG() macros use this function. */ -static uint32_t double_hash(uint32_t uid, uint32_t probe_num) -{ - return (uid * PRIME1 + ((uid * PRIME2) | 1) * probe_num) - % uid_hash_table_size; -} - -#define FOR_EACH_USER(ui) for (ui = uid_hash_table; ui && ui < uid_hash_table \ - + uid_hash_table_size; ui++) - -enum search_uid_flags { - OPEN_USER_TABLE = 1, - CREATE_USER_TABLE = 2, -}; - -static int uid_is_admissible(uint32_t uid) -{ - int i; - - for (i = 0; i < conf.uid_given; i++) { - struct uid_range *ur = admissible_uids + i; - - if (ur->low <= uid && ur->high >= uid) - break; - } - i = !conf.uid_given || i < conf.uid_given; - DEBUG_LOG("uid %u is %sadmissible\n", (unsigned)uid, - i? "" : "not "); - return i; -} - -static int search_uid(uint32_t uid, enum search_uid_flags flags, - struct user_info **ui_ptr) -{ - uint32_t p; - - for (p = 0; p < uid_hash_table_size; p++) { - struct user_info *ui = uid_hash_table + double_hash(uid, p); - - if (!ui_used(ui)) { - int ret; - if (!flags) - return -E_BAD_UID; - ui->uid = uid; - ui->flags |= UI_FL_SLOT_USED; - if (!uid_is_admissible(uid)) - return 0; - ui->flags |= UI_FL_ADMISSIBLE; - ret = open_user_table(ui, flags & CREATE_USER_TABLE); - if (ret < 0) - return ret; - - if (ui_ptr) - *ui_ptr = ui; - return 1; - } - if (ui->uid != uid) - continue; - if (ui_ptr) - *ui_ptr = ui; - return 0; - } - return flags? -E_HASH_TABLE_OVERFLOW : -E_BAD_UID; -} - -static int update_user_row(struct osl_table *t, uint64_t dir_num, - uint64_t *add) -{ - struct osl_row *row; - struct osl_object obj = {.data = &dir_num, .size = sizeof(dir_num)}; - - int ret = osl(osl_get_row(t, UT_DIR_NUM, &obj, &row)); - - if (ret == -E_OSL && osl_errno != E_OSL_RB_KEY_NOT_FOUND) - return ret; - if (ret < 0) { /* this is the first file we add */ - struct osl_object objects[NUM_UT_COLUMNS]; - uint64_t num_files = 1; - - objects[UT_DIR_NUM].data = &dir_num; - objects[UT_DIR_NUM].size = sizeof(dir_num); - objects[UT_BYTES].data = add; - objects[UT_BYTES].size = sizeof(*add); - objects[UT_FILES].data = &num_files; - objects[UT_FILES].size = sizeof(num_files); - INFO_LOG("######################### ret: %d\n", ret); - ret = osl(osl_add_row(t, objects)); - INFO_LOG("######################### ret: %d\n", ret); - return ret; - } else { /* add size and increment file count */ - uint64_t num; - struct osl_object obj1, obj2 = {.data = &num, .size = sizeof(num)}; - - ret = osl(osl_get_object(t, row, UT_BYTES, &obj1)); - if (ret < 0) - return ret; - num = *(uint64_t *)obj1.data + *add; - ret = osl(osl_update_object(t, row, UT_BYTES, &obj2)); - if (ret < 0) - return ret; - ret = osl(osl_get_object(t, row, UT_FILES, &obj1)); - if (ret < 0) - return ret; - num = *(uint64_t *)obj1.data + 1; - return osl(osl_update_object(t, row, UT_FILES, &obj2)); - } -} - -static uint64_t num_dirs; -static uint64_t num_files; -static uint64_t num_bytes; - -int scan_dir(char *dirname, uint64_t *parent_dir_num) -{ - DIR *dir; - struct dirent *entry; - int ret, cwd_fd, ret2; - uint64_t dir_size = 0, dir_files = 0; - uint64_t this_dir_num = ++num_dirs; - - DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)num_dirs, dirname); - ret = para_opendir(dirname, &dir, &cwd_fd); - if (ret < 0) { - if (ret != -ERRNO_TO_ERROR(EACCES)) - return ret; - WARNING_LOG("permission denied for %s\n", dirname); - return 1; - } - while ((entry = readdir(dir))) { - mode_t m; - struct stat s; - uint32_t uid; - uint64_t size; - struct user_info *ui; - - if (!strcmp(entry->d_name, ".")) - continue; - if (!strcmp(entry->d_name, "..")) - continue; - if (lstat(entry->d_name, &s) == -1) { - WARNING_LOG("lstat error for %s/%s\n", dirname, - entry->d_name); - continue; - } - m = s.st_mode; - if (!S_ISREG(m) && !S_ISDIR(m)) - continue; - if (S_ISDIR(m)) { - ret = scan_dir(entry->d_name, &this_dir_num); - if (ret < 0) - goto out; - continue; - } - /* regular file */ - size = s.st_size; - dir_size += size; - num_bytes += size; - dir_files++; - num_files++; - uid = s.st_uid; - ret = search_uid(uid, CREATE_USER_TABLE | OPEN_USER_TABLE, &ui); - if (ret < 0) - goto out; - ui->bytes += size; - ui->files++; - ret = update_user_row(ui->table, this_dir_num, &size); - if (ret < 0) - goto out; - } - ret = add_directory(dirname, &this_dir_num, parent_dir_num, - &dir_size, &dir_files); -out: - closedir(dir); - ret2 = para_fchdir(cwd_fd); - if (ret2 < 0 && ret >= 0) - ret = ret2; - close(cwd_fd); - return ret; -} - -static int get_dir_name_by_number(uint64_t *dirnum, char **name) -{ - char *result = NULL, *tmp; - struct osl_row *row; - uint64_t val = *dirnum; - struct osl_object obj = {.data = &val, .size = sizeof(val)}; - int ret; - -again: - ret = osl(osl_get_row(dir_table, DT_NUM, &obj, &row)); - if (ret < 0) - goto out; - ret = osl(osl_get_object(dir_table, row, DT_NAME, &obj)); - if (ret < 0) - goto out; - if (result) { - tmp = make_message("%s/%s", (char *)obj.data, result); - free(result); - result = tmp; - } else - result = para_strdup((char *)obj.data); - ret = osl(osl_get_object(dir_table, row, DT_PARENT_NUM, &obj)); - if (ret < 0) - goto out; - val = *(uint64_t *)obj.data; - if (val) - goto again; -out: - if (ret < 0) { - free(result); - *name = NULL; - } else - *name = result; - return ret; -} - -static int get_dir_name_of_row(struct osl_row *dir_table_row, char **name) -{ - struct osl_object obj; - int ret; - char *this_dir, *prefix = NULL; - - *name = NULL; - ret = osl(osl_get_object(dir_table, dir_table_row, DT_NAME, &obj)); - if (ret < 0) - return ret; - this_dir = para_strdup((char *)obj.data); - ret = osl(osl_get_object(dir_table, dir_table_row, DT_PARENT_NUM, &obj)); - if (ret < 0) - goto out; - if (!*(uint64_t *)obj.data) { - *name = this_dir; - return 1; - } - ret = get_dir_name_by_number((uint64_t *)obj.data, &prefix); - if (ret < 0) - goto out; - *name = make_message("%s/%s", prefix, this_dir); - free(prefix); - ret = 1; -out: - free(this_dir); - return ret; -} - -const uint64_t size_unit_divisors[] = { - [size_unit_arg_b] = 1ULL, - [size_unit_arg_k] = 1024ULL, - [size_unit_arg_m] = 1024ULL * 1024ULL, - [size_unit_arg_g] = 1024ULL * 1024ULL * 1024ULL, - [size_unit_arg_t] = 1024ULL * 1024ULL * 1024ULL * 1024ULL, -}; - -const uint64_t count_unit_divisors[] = { - - [count_unit_arg_n] = 1ULL, - [count_unit_arg_k] = 1000ULL, - [count_unit_arg_m] = 1000ULL * 1000ULL, - [count_unit_arg_g] = 1000ULL * 1000ULL * 1000ULL, - [count_unit_arg_t] = 1000ULL * 1000ULL * 1000ULL * 1000ULL, -}; - -const char size_unit_abbrevs[] = " BKMGT"; -const char count_unit_abbrevs[] = " kmgt"; - -static enum enum_size_unit format_size_value(enum enum_size_unit unit, - uint64_t value, int print_unit, char *result) -{ - enum enum_size_unit u = unit; - char unit_buf[2] = "\0\0"; - - if (unit == size_unit_arg_h) /* human readable */ - for (u = size_unit_arg_b; u < size_unit_arg_t && - value > size_unit_divisors[u + 1]; u++) - ; /* nothing */ - if (print_unit) - unit_buf[0] = size_unit_abbrevs[u]; - sprintf(result, "%llu%s", - (long long unsigned)value / size_unit_divisors[u], unit_buf); - return u; -} - -static enum enum_count_unit format_count_value(enum enum_count_unit unit, - uint64_t value, int print_unit, char *result) -{ - enum enum_count_unit u = unit; - char unit_buf[2] = "\0\0"; - - if (unit == count_unit_arg_h) /* human readable */ - for (u = count_unit_arg_n; u < count_unit_arg_t && - value > count_unit_divisors[u + 1]; u++) - ; /* nothing */ - if (print_unit) - unit_buf[0] = count_unit_abbrevs[u]; - sprintf(result, "%llu%s", - (long long unsigned)value / count_unit_divisors[u], unit_buf); - return u; -} - -enum global_stats_flags { - GSF_PRINT_DIRNAME = 1, - GSF_PRINT_BYTES = 2, - GSF_PRINT_FILES = 4, - GSF_COMPUTE_SUMMARY = 8, -}; - -struct global_stats_info { - uint32_t count; - int ret; - int osl_errno; - enum global_stats_flags flags; -}; - -static int global_stats_loop_function(struct osl_row *row, void *data) -{ - struct global_stats_info *gsi = data; - struct osl_object obj; - char *dirname, formated_value[FORMATED_VALUE_SIZE]; - int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY; - - if (!gsi->count && !summary) { - ret = -E_LOOP_COMPLETE; - goto err; - } - if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) { - uint64_t files; - ret = osl(osl_get_object(dir_table, row, DT_FILES, &obj)); - if (ret < 0) - goto err; - files = *(uint64_t *)obj.data; - if (gsi->count && (gsi->flags & GSF_PRINT_FILES)) { - format_count_value(conf.count_unit_arg, files, - conf.count_unit_arg == count_unit_arg_h, - formated_value); - printf("\t%s%s", formated_value, - (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_DIRNAME))? - "\t" : "\n"); - } - if (summary) - num_files += files; - } - if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) { - uint64_t bytes; - ret = osl(osl_get_object(dir_table, row, DT_BYTES, &obj)); - if (ret < 0) - goto err; - bytes = *(uint64_t *)obj.data; - if (gsi->count && (gsi->flags & GSF_PRINT_BYTES)) { - format_size_value(conf.size_unit_arg, bytes, - conf.size_unit_arg == size_unit_arg_h, - formated_value); - printf("%s%s%s", - (gsi->flags & GSF_PRINT_FILES)? "" : "\t", - formated_value, - (gsi->flags & GSF_PRINT_DIRNAME)? "\t" : "\n" - ); - } - if (summary) { - num_bytes += bytes; - num_dirs++; - } - } - if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) { - ret = get_dir_name_of_row(row, &dirname); - if (ret < 0) - goto err; - printf("%s%s\n", - (gsi->flags & (GSF_PRINT_BYTES | GSF_PRINT_FILES))? "" : "\t", - dirname); - } - if (gsi->count > 0) - gsi->count--; - return 1; -err: - gsi->ret = ret; - gsi->osl_errno = (ret == -E_OSL)? osl_errno : 0; - return -1; -} - -static void print_id_stats(void) -{ - struct user_info *ui; - - printf("User summary " - "(uid/dirs%s/files%s/size%s):\n", - count_unit_buf, count_unit_buf, size_unit_buf); - FOR_EACH_USER(ui) { - char formated_dir_count[FORMATED_VALUE_SIZE], - formated_file_count[FORMATED_VALUE_SIZE], - formated_bytes[FORMATED_VALUE_SIZE ]; - if (!ui_used(ui) || !ui_admissible(ui)) - continue; - format_count_value(conf.count_unit_arg, ui->dirs, - conf.count_unit_arg == count_unit_arg_h, - formated_dir_count); - format_count_value(conf.count_unit_arg, ui->files, - conf.count_unit_arg == count_unit_arg_h, - formated_file_count); - format_size_value(conf.size_unit_arg, ui->bytes, - conf.size_unit_arg == size_unit_arg_h, - formated_bytes); - printf("\t%u\t%s\t%s\t%s\n", (unsigned)ui->uid, - formated_dir_count, - formated_file_count, - formated_bytes - ); - } -} - -enum user_stats_flags { - USF_PRINT_DIRNAME = 1, - USF_PRINT_BYTES = 2, - USF_PRINT_FILES = 4, - USF_COMPUTE_SUMMARY = 8, -}; - -struct user_stats_info { - uint32_t count; - enum user_stats_flags flags; - int ret; - int osl_errno; - struct user_info *ui; -}; - -static int user_stats_loop_function(struct osl_row *row, void *data) -{ - struct user_stats_info *usi = data; - struct osl_object obj; - int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY; - char formated_value[FORMATED_VALUE_SIZE]; - - if (!usi->count && !summary) { - ret = -E_LOOP_COMPLETE; - goto err; - } - if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) { - uint64_t files; - ret = osl(osl_get_object(usi->ui->table, row, UT_FILES, &obj)); - if (ret < 0) - goto err; - files = *(uint64_t *)obj.data; - if (usi->count && (usi->flags & USF_PRINT_FILES)) { - format_count_value(conf.count_unit_arg, files, - conf.count_unit_arg == count_unit_arg_h, - formated_value); - printf("\t%s%s", formated_value, - (usi->flags & (USF_PRINT_BYTES | USF_PRINT_DIRNAME))? - "\t" : "\n" - ); - } - if (summary) - usi->ui->files += files; - } - if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) { - uint64_t bytes; - ret = osl(osl_get_object(usi->ui->table, row, UT_BYTES, &obj)); - if (ret < 0) - goto err; - bytes = *(uint64_t *)obj.data; - if (usi->count && (usi->flags & USF_PRINT_BYTES)) { - format_size_value(conf.size_unit_arg, bytes, - conf.size_unit_arg == size_unit_arg_h, - formated_value); - printf("%s%s%s", - (usi->flags & USF_PRINT_FILES)? "" : "\t", - formated_value, - usi->flags & USF_PRINT_DIRNAME? "\t" : "\n" - ); - } - if (summary) { - usi->ui->bytes += bytes; - usi->ui->dirs++; - } - - } - if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) { - char *dirname; - ret = osl(osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj)); - if (ret < 0) - goto err; - ret = get_dir_name_by_number((uint64_t *)obj.data, &dirname); - if (ret < 0) - goto err; - printf("%s%s\n", - (usi->flags & (USF_PRINT_BYTES | USF_PRINT_FILES))? "" : "\t", - dirname); - } - if (usi->count > 0) - usi->count--; - return 1; -err: - usi->ret = ret; - usi->osl_errno = (ret == -E_OSL)? osl_errno : 0; - return -1; -} - -static int check_loop_return(int ret, int loop_ret, int loop_osl_errno) -{ - if (ret >= 0) - return ret; - assert(ret == -E_OSL); - if (osl_errno != E_OSL_LOOP) - /* error not caused by loop function returning negative. */ - return ret; - assert(loop_ret < 0); - if (loop_ret == -E_LOOP_COMPLETE) /* no error */ - return 1; - if (loop_ret == -E_OSL) { /* osl error in loop function */ - assert(loop_osl_errno); - osl_errno = loop_osl_errno; - } - return loop_ret; -} - -static int adu_loop_reverse(struct osl_table *t, unsigned col_num, void *private_data, - osl_rbtree_loop_func *func, int *loop_ret, int *loop_osl_errno) -{ - int ret = osl(osl_rbtree_loop_reverse(t, col_num, private_data, func)); - return check_loop_return(ret, *loop_ret, *loop_osl_errno); -} - -static int print_user_stats(void) -{ - struct user_info *ui; - int ret; - - FOR_EACH_USER(ui) { - struct user_stats_info usi = { - .count = conf.limit_arg, - .ui = ui - }; - if (!ui_used(ui) || !ui_admissible(ui)) - continue; - usi.flags = USF_PRINT_DIRNAME | USF_PRINT_BYTES | USF_COMPUTE_SUMMARY; - printf("uid %u, by size%s:\n", - (unsigned) ui->uid, size_unit_buf); - ret = adu_loop_reverse(ui->table, UT_BYTES, &usi, user_stats_loop_function, - &usi.ret, &usi.osl_errno); - if (ret < 0) - return ret; - printf("\nuid %u, by file count%s:\n", - (unsigned) ui->uid, count_unit_buf); - usi.count = conf.limit_arg, - usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES; - ret = adu_loop_reverse(ui->table, UT_FILES, &usi, user_stats_loop_function, - &usi.ret, &usi.osl_errno); - if (ret < 0) - return ret; - printf("\n"); - } - return 1; -} - -static void print_global_summary(void) -{ - char d[FORMATED_VALUE_SIZE], f[FORMATED_VALUE_SIZE], - s[FORMATED_VALUE_SIZE]; - enum enum_count_unit ud, uf; - enum enum_size_unit us; - - ud = format_count_value(conf.count_unit_arg, num_dirs, 0, d); - uf = format_count_value(conf.count_unit_arg, num_files, 0, f); - us = format_size_value(conf.size_unit_arg, num_bytes, 0, s); - - printf("Global summary " - "(dirs(%c)/files(%c)/size(%c))\n" - "\t%s\t%s\t%s\n\n", - count_unit_abbrevs[ud], - count_unit_abbrevs[uf], - size_unit_abbrevs[us], - d, f, s - ); - -} - -static int print_statistics(void) -{ - int ret; - struct global_stats_info gsi = { - .count = conf.limit_arg, - .flags = GSF_PRINT_DIRNAME | GSF_PRINT_BYTES | GSF_COMPUTE_SUMMARY - }; - - printf("By size%s:\n", - size_unit_buf); - ret = adu_loop_reverse(dir_table, DT_BYTES, &gsi, - global_stats_loop_function, &gsi.ret, &gsi.osl_errno); - if (ret < 0) - return ret; - printf("\n"); - - gsi.count = conf.limit_arg; - gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES; - printf("By file count%s:\n", - count_unit_buf); - ret = adu_loop_reverse(dir_table, DT_FILES, &gsi, - global_stats_loop_function, &gsi.ret, &gsi.osl_errno); - if (ret < 0) - return ret; - printf("\n"); - print_global_summary(); - print_user_stats(); - print_id_stats(); - return 1; -} - -static char *get_uid_list_name(void) -{ - return make_message("%s/uid_list", conf.database_dir_arg); -} - -static int write_uid_list(void) +__printf_2_3 void __log(int ll, const char* fmt,...) { - char *buf, *filename; - uint32_t count = 0; - struct user_info *ui; - size_t size = num_uids * sizeof(uint32_t); - int ret; - - if (!num_uids) - return 0; - buf = para_malloc(size); - FOR_EACH_USER(ui) { - if (!ui_used(ui) || !ui_admissible(ui)) - continue; - DEBUG_LOG("saving uid %u\n", (unsigned) ui->uid); - write_u32(buf + count++ * sizeof(uint32_t), ui->uid); - } - filename = get_uid_list_name(); - ret = para_write_file(filename, buf, size); - free(filename); - free(buf); - return ret; -} + va_list argp; + FILE *outfd; + struct tm *tm; + time_t t1; + char str[255] = ""; -static int open_dir_table(void) -{ - if (!dir_table_desc.dir) /* we did not create the table */ - dir_table_desc.dir = para_strdup(conf.database_dir_arg); - return osl(osl_open_table(&dir_table_desc, &dir_table)); + if (ll < conf.loglevel_arg) + return; + outfd = stderr; + time(&t1); + tm = localtime(&t1); + strftime(str, sizeof(str), "%b %d %H:%M:%S", tm); + fprintf(outfd, "%s ", str); + va_start(argp, fmt); + vfprintf(outfd, fmt, argp); + va_end(argp); } static void close_dir_table(void) @@ -1040,6 +130,7 @@ static void close_dir_table(void) if (!dir_table) return; + NOTICE_LOG("closing dir table\n"); ret = osl(osl_close_table(dir_table, OSL_MARK_CLEAN)); if (ret < 0) ERROR_LOG("failed to close dir table: %s\n", adu_strerror(-ret)); @@ -1047,118 +138,73 @@ static void close_dir_table(void) dir_table = NULL; } -static void close_user_table(struct user_info *ui) -{ - int ret; - - if (!ui || !ui_used(ui) || !ui_admissible(ui)) - return; - ret = osl(osl_close_table(ui->table, OSL_MARK_CLEAN)); - if (ret < 0) - ERROR_LOG("failed to close user table %u: %s\n", - (unsigned) ui->uid, adu_strerror(-ret)); - free((char *)ui->desc->name); - ui->desc->name = NULL; - free((char *)ui->desc->dir); - ui->desc->dir = NULL; - free(ui->desc); - ui->desc = NULL; - ui->table = NULL; - ui->flags = 0; -} - -static void close_user_tables(void) -{ - struct user_info *ui; - - FOR_EACH_USER(ui) - close_user_table(ui); -} - static void close_all_tables(void) { close_dir_table(); close_user_tables(); - free_hash_table(); } -static int com_create() +static void signal_handler(int s) { - uint64_t zero = 0ULL; - int ret = create_tables(); + signum = s; +} - if (ret < 0) - return ret; - ret = open_dir_table(); - if (ret < 0) - return ret; - ret = scan_dir(conf.base_dir_arg, &zero); - if (ret < 0) - goto out; - ret = write_uid_list(); -out: +/** + * Check whether to terminate adu. + * + * Check whether a signal was caught that should terminate the + * adu process. If yes, close all osl tables and exit gracefully. + */ +void check_signals(void) +{ + if (likely(!signum)) + return; + EMERG_LOG("caught signal %d\n", signum); close_all_tables(); - return ret; + exit(EXIT_FAILURE); } -static int read_uid_file(void) +static int init_signals(void) { - size_t size; - uint32_t n; - char *filename = get_uid_list_name(), *map; - int ret = mmap_full_file(filename, O_RDONLY, (void **)&map, &size, NULL); - - if (ret < 0) { - INFO_LOG("failed to map %s\n", filename); - free(filename); - return ret; - } - num_uids = size / 4; - INFO_LOG("found %u uids in %s\n", (unsigned)num_uids, filename); - free(filename); - /* hash table size should be a power of two and larger than the number of uids */ - uid_hash_table_size = 4; - while (uid_hash_table_size < num_uids) - uid_hash_table_size *= 2; - create_hash_table(); - for (n = 0; n < num_uids; n++) { - uint32_t uid = read_u32(map + n * sizeof(uid)); - ret = search_uid(uid, OPEN_USER_TABLE, NULL); - if (ret < 0) - goto out; - } -out: - para_munmap(map, size); - return ret; + if (signal(SIGINT, &signal_handler) == SIG_ERR) + return -E_SIGNAL_SIG_ERR; + if (signal(SIGTERM, &signal_handler) == SIG_ERR) + return -E_SIGNAL_SIG_ERR; + if (signal(SIGPIPE, &signal_handler) == SIG_ERR) + return -E_SIGNAL_SIG_ERR; + return 1; } -static int com_select(void) +/** + * Open the directory table. + * + * \param create If non-zero, create the table first. + * + * \return Standard. + */ +int open_dir_table(int create) { - int ret; - if (conf.count_unit_arg != count_unit_arg_h) - count_unit_buf[1] = count_unit_abbrevs[conf.count_unit_arg]; - else - count_unit_buf[0] = '\0'; - if (conf.size_unit_arg != size_unit_arg_h) - size_unit_buf[1] = size_unit_abbrevs[conf.size_unit_arg]; - else - size_unit_buf[0] = '\0'; + if (dir_table) + return 1; + dir_table_desc.dir = adu_strdup(conf.database_dir_arg); - ret = open_dir_table(); - if (ret < 0) - return ret; - ret = read_uid_file(); - if (ret < 0) - return ret; - ret = print_statistics(); - close_all_tables(); - return ret; + if (create) { + NOTICE_LOG("creating dir table\n"); + int ret = osl(osl_create_table(&dir_table_desc)); + if (ret < 0) { + free((char *)dir_table_desc.dir); + return ret; + } + } + INFO_LOG("opening dir table\n"); + return osl(osl_open_table(&dir_table_desc, &dir_table)); } static int check_args(void) { - int i, ret; + if (conf.create_given && !conf.base_dir_given) + return -E_SYNTAX; /* remove trailing slashes from base-dir arg */ if (conf.base_dir_given) { @@ -1173,48 +219,96 @@ static int check_args(void) conf.base_dir_arg[len] = '\0'; } } - if (!conf.uid_given) - return 0; - admissible_uids = para_malloc(conf.uid_given * sizeof(*admissible_uids)); - for (i = 0; i < conf.uid_given; i++) { - ret = parse_uid_range(conf.uid_arg[i], admissible_uids + i); - if (ret < 0) - goto err; - } return 1; -err: - free(admissible_uids); - admissible_uids = NULL; - return ret; } +static int print_complete_help_and_die(void) +{ + const char **line; + + printf("%s-%s\n", CMDLINE_PARSER_PACKAGE, CMDLINE_PARSER_VERSION); + printf("%s\n\n", gengetopt_args_info_purpose); + printf("%s\n\n", gengetopt_args_info_usage); + + if (conf.help_given) + line = gengetopt_args_info_help; + else + line = gengetopt_args_info_detailed_help; + for (; *line; line++) + printf("%s\n", *line); + + if (conf.help_given) + line = select_args_info_help; + else + line = select_args_info_detailed_help; + printf("Select options:\n"); + for (; *line; line++) + printf("%s\n", *line); + + printf("Interactive commands:\n"); + print_interactive_help(); + cmdline_parser_free(&conf); + select_cmdline_parser_free(&select_conf); + exit(EXIT_FAILURE); +} + +/** + * The main function of adu. + * + * \param argc Usual argument count. + * \param argv Usual argument vector. + * + * Check command line options, init the signal handlers and + * call the main function of the selected mode. + * + * \return \p EXIT_SUCCESS on success, \p EXIT_FAILURE otherwise. + */ int main(int argc, char **argv) { int ret; struct cmdline_parser_params params = { - .override = 0, + .override = 1, .initialize = 1, .check_required = 0, .check_ambiguity = 0, - .print_errors = 1 + .print_errors = 0 }; + select_cmdline_parser_init(&select_conf); + cmdline_parser_init(&conf); + /* ignore errors and print complete help if --help was given */ + cmdline_parser_ext(argc, argv, &conf, ¶ms); + if (conf.help_given || conf.detailed_help_given) + print_complete_help_and_die(); + cmdline_parser_free(&conf); + params.check_required = 1; + params.check_ambiguity = 1; + params.print_errors = 1; + ret = cmdline_parser_ext(argc, argv, &conf, ¶ms); + if (ret) + exit(EXIT_FAILURE); - cmdline_parser_ext(argc, argv, &conf, ¶ms); /* aborts on errors */ ret = check_args(); + if (ret < 0) + goto out; + ret = init_signals(); if (ret < 0) goto out; ret = -E_SYNTAX; if (conf.select_given) ret = com_select(); - else + else if (conf.create_given) ret = com_create(); + else + ret = com_interactive(); if (ret < 0) goto out; out: - free(admissible_uids); + close_all_tables(); if (ret < 0) { ERROR_LOG("%s\n", adu_strerror(-ret)); return -EXIT_FAILURE; } + cmdline_parser_free(&conf); + select_cmdline_parser_free(&select_conf); return EXIT_SUCCESS; }