+/*
+ * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
+ *
+ * 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
+ */
+
#include "adu.h"
#include <dirent.h> /* readdir() */
-
-#include "gcc-compat.h"
+#include <pwd.h>
+#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;
-/** 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;
-};
-
/**
- * Contains info for each user that owns at least one regular file.
+ * The error code of the last called 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;
-
-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;
-}
+int osl_errno;
-static int parse_uid_range(const char *orig_arg, struct uid_range *ur)
-{
- int ret;
- char *arg = para_strdup(orig_arg), *p = strchr(arg, '-');
+/** In case a signal is received, its number is stored here. */
+static int signum;
- if (!p || p == arg) {
- if (p == arg) /* -42 */
- p++;
- ret = check_uid_arg(p, &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)))
-
-/**
- * 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] = "";
-
- 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] = {
.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_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_create_table(ui->desc);
- if (ret < 0)
- goto err;
- num_uids++;
- }
- ret = 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_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_get_row(t, UT_DIR_NUM, &obj, &row);
-
- if (ret < 0 && ret != -E_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_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_get_object(t, row, UT_BYTES, &obj1);
- if (ret < 0)
- return ret;
- num = *(uint64_t *)obj1.data + *add;
- ret = osl_update_object(t, row, UT_BYTES, &obj2);
- if (ret < 0)
- return ret;
- ret = osl_get_object(t, row, UT_FILES, &obj1);
- if (ret < 0)
- return ret;
- num = *(uint64_t *)obj1.data + 1;
- return 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)
+__printf_2_3 void __log(int ll, const char* fmt,...)
{
- 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;
+ va_list argp;
+ FILE *outfd;
+ struct tm *tm;
+ time_t t1;
+ char str[255] = "";
- 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;
+ 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 int get_dir_name_by_number(uint64_t *dirnum, char **name)
+static void close_dir_table(void)
{
- 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_get_row(dir_table, DT_NUM, &obj, &row);
- if (ret < 0)
- goto out;
- ret = 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_get_object(dir_table, row, DT_PARENT_NUM, &obj);
+ if (!dir_table)
+ return;
+ NOTICE_LOG("closing dir table\n");
+ ret = osl(osl_close_table(dir_table, OSL_MARK_CLEAN));
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;
+ ERROR_LOG("failed to close dir table: %s\n", adu_strerror(-ret));
+ free((char *)dir_table_desc.dir);
+ dir_table = NULL;
}
-static int get_dir_name_of_row(struct osl_row *dir_table_row, char **name)
+static void close_all_tables(void)
{
- struct osl_object obj;
- int ret;
- char *this_dir, *prefix = NULL;
-
- *name = NULL;
- ret = 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_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;
+ close_dir_table();
+ close_user_tables();
}
-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 void format_size_value(enum enum_size_unit unit, uint64_t value, char *result)
+static void signal_handler(int s)
{
- if (unit == size_unit_arg_h) /* human readable */
- for (unit = size_unit_arg_b; unit < size_unit_arg_t && value > size_unit_divisors[unit + 1]; unit++)
- ; /* nothing */
- sprintf(result, "%llu%c", (long long unsigned)value / size_unit_divisors[unit], size_unit_abbrevs[unit]);
+ signum = s;
}
-static void format_count_value(enum enum_count_unit unit, uint64_t value, char *result)
+/**
+ * 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 (unit == count_unit_arg_h) /* human readable */
- for (unit = count_unit_arg_n; unit < count_unit_arg_t && value > count_unit_divisors[unit + 1]; unit++)
- ; /* nothing */
- sprintf(result, "%llu%c", (long long unsigned)value / count_unit_divisors[unit], count_unit_abbrevs[unit]);
+ if (likely(!signum))
+ return;
+ EMERG_LOG("caught signal %d\n", signum);
+ close_all_tables();
+ exit(EXIT_FAILURE);
}
-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;
- enum global_stats_flags flags;
-};
-
-static int global_stats_loop_function(struct osl_row *row, void *data)
+static int init_signals(void)
{
- struct global_stats_info *gsi = data;
- struct osl_object obj;
- char *dirname, formated_value[25];
- int ret, summary = gsi->flags & GSF_COMPUTE_SUMMARY;
-
- if (!gsi->count && !summary)
- return -E_LOOP_COMPLETE;
- if (gsi->count && (gsi->flags & GSF_PRINT_DIRNAME)) {
- ret = get_dir_name_of_row(row, &dirname);
- if (ret < 0)
- return ret;
- printf("%s%s", dirname,
- (gsi->flags & (GSF_PRINT_FILES | GSF_PRINT_BYTES))?
- "\t" : "\n"
- );
- }
- if (summary || (gsi->count && (gsi->flags & GSF_PRINT_FILES))) {
- uint64_t files;
- ret = osl_get_object(dir_table, row, DT_FILES, &obj);
- if (ret < 0)
- return ret;
- files = *(uint64_t *)obj.data;
- if (gsi->count && (gsi->flags & GSF_PRINT_FILES)) {
- format_size_value(conf.size_unit_arg, files,
- formated_value);
- printf("%s%s", formated_value,
- (gsi->flags & GSF_PRINT_BYTES)? "\t" : "\n");
- }
- if (summary)
- num_files += files;
- }
- if (summary || (gsi->count && (gsi->flags & GSF_PRINT_BYTES))) {
- uint64_t bytes;
- ret = osl_get_object(dir_table, row, DT_BYTES, &obj);
- if (ret < 0)
- return ret;
- bytes = *(uint64_t *)obj.data;
- if (gsi->count && (gsi->flags & GSF_PRINT_BYTES)) {
- format_size_value(conf.size_unit_arg, bytes,
- formated_value);
- printf("%s\n", formated_value);
- }
- if (summary) {
- num_bytes += bytes;
- num_dirs++;
- }
- }
- if (gsi->count > 0)
- gsi->count--;
+ 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 void print_id_stats(void)
+/**
+ * Open the directory table.
+ *
+ * \param create If non-zero, create the table first.
+ *
+ * \return Standard.
+ */
+int open_dir_table(int create)
{
- struct user_info *ui;
-
- printf("--------------------- user summary (uid/dirs/files/bytes):\n");
- FOR_EACH_USER(ui) {
- char formated_dir_count[25], formated_file_count[25],
- formated_bytes[25];
- if (!ui_used(ui))
- continue;
- format_count_value(conf.count_unit_arg, ui->dirs,
- formated_dir_count);
- format_count_value(conf.count_unit_arg, ui->files,
- formated_file_count);
- format_size_value(conf.size_unit_arg, ui->bytes,
- formated_bytes);
- printf("%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;
- struct user_info *ui;
-};
-
-static int user_stats_loop_function(struct osl_row *row, void *data)
-{
- struct user_stats_info *usi = data;
- struct osl_row *dir_row;
- struct osl_object obj;
- int ret, summary = usi->flags & GSF_COMPUTE_SUMMARY;
- char formated_value[25];
+ if (dir_table)
+ return 1;
+ dir_table_desc.dir = adu_strdup(conf.database_dir_arg);
- if (!usi->count && !summary)
- return -E_LOOP_COMPLETE;
- if (usi->count && (usi->flags & USF_PRINT_DIRNAME)) {
- char *dirname;
- ret = osl_get_object(usi->ui->table, row, UT_DIR_NUM, &obj);
- if (ret < 0)
- return ret;
- ret = get_dir_name_by_number((uint64_t *)obj.data, &dirname);
- if (ret < 0)
- return ret;
- printf("%s%s",
- dirname,
- (usi->flags & (USF_PRINT_FILES | USF_PRINT_BYTES))?
- "\t" : "\n"
- );
- }
- if (summary || (usi->count && (usi->flags & USF_PRINT_FILES))) {
- uint64_t files;
- ret = osl_get_object(usi->ui->table, row, UT_FILES, &obj);
- if (ret < 0)
- return ret;
- files = *(uint64_t *)obj.data;
- if (usi->count && (usi->flags & USF_PRINT_FILES)) {
- format_size_value(conf.size_unit_arg, files,
- formated_value);
- printf("%s%s", formated_value,
- (usi->flags & USF_PRINT_BYTES)? "\t" : "\n"
- );
- }
- if (summary)
- usi->ui->files += files;
- }
- if (summary || (usi->count && (usi->flags & USF_PRINT_BYTES))) {
- uint64_t bytes;
- ret = osl_get_object(usi->ui->table, row, UT_BYTES, &obj);
- if (ret < 0)
+ 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;
- bytes = *(uint64_t *)obj.data;
- if (usi->count && (usi->flags & USF_PRINT_BYTES)) {
- format_size_value(conf.size_unit_arg, bytes,
- formated_value);
- printf("%s\n", formated_value);
- }
- if (summary) {
- usi->ui->bytes += bytes;
- usi->ui->dirs++;
}
-
}
- if (usi->count > 0)
- usi->count--;
- return 1;
+ INFO_LOG("opening dir table\n");
+ return osl(osl_open_table(&dir_table_desc, &dir_table));
}
-static void print_user_stats(void)
+static int check_args(void)
{
- struct user_info *ui;
-
- 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\n",
- (unsigned) ui->uid);
- printf("----------------- Largest dirs -------------------\n");
- osl_rbtree_loop_reverse(ui->table, UT_BYTES, &usi,
- user_stats_loop_function);
- printf("---------- dirs containing most files ------------\n");
- usi.count = conf.limit_arg,
- usi.flags = USF_PRINT_DIRNAME | USF_PRINT_FILES;
- osl_rbtree_loop_reverse(ui->table, UT_FILES, &usi,
- user_stats_loop_function);
+ if (conf.create_given && !conf.base_dir_given)
+ return -E_SYNTAX;
+
+ /* remove trailing slashes from base-dir arg */
+ if (conf.base_dir_given) {
+ size_t len = strlen(conf.base_dir_arg);
+ for (;;) {
+ if (!len) /* empty string */
+ return -ERRNO_TO_ERROR(EINVAL);
+ if (!--len) /* length 1 is always OK */
+ break;
+ if (conf.base_dir_arg[len] != '/')
+ break; /* no trailing slash, also OK */
+ conf.base_dir_arg[len] = '\0';
+ }
}
-}
-
-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("----------------- Largest dirs -------------------\n");
- ret = osl_rbtree_loop_reverse(dir_table, DT_BYTES, &gsi,
- global_stats_loop_function);
- if (ret < 0 && ret != -E_LOOP_COMPLETE)
- return ret;
- gsi.count = conf.limit_arg;
-
- gsi.flags = GSF_PRINT_DIRNAME | GSF_PRINT_FILES;
- printf("---------- dirs containing most files ------------\n");
- ret = osl_rbtree_loop_reverse(dir_table, DT_FILES, &gsi,
- global_stats_loop_function);
- if (ret < 0 && ret != -E_LOOP_COMPLETE)
- return ret;
-
- printf("------------------ Global summary (dirs/files/bytes)\n"
- "%llu\t%llu\t%llu\n",
- (long long unsigned)num_dirs, (long long unsigned)num_files,
- (long long unsigned)num_bytes);
- 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)
-{
- 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;
-}
-
-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_open_table(&dir_table_desc, &dir_table);
-}
-
-static void close_dir_table(void)
-{
- int ret;
-
- if (!dir_table)
- return;
- ret = osl_close_table(dir_table, OSL_MARK_CLEAN);
- if (ret < 0)
- ERROR_LOG("failed to close dir table: %s\n", error_txt(-ret));
- free((char *)dir_table_desc.dir);
- dir_table = NULL;
-}
-
-static void close_user_table(struct user_info *ui)
+static void print_complete_help_and_die(void)
{
- int ret;
+ const char **line;
- if (!ui || !ui_used(ui) || !ui_admissible(ui))
- return;
- ret = osl_close_table(ui->table, OSL_MARK_CLEAN);
- if (ret < 0)
- ERROR_LOG("failed to close user table %u: %s\n",
- (unsigned) ui->uid, error_txt(-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);
-}
+ 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);
-static void close_all_tables(void)
-{
- close_dir_table();
- close_user_tables();
- free_hash_table();
-}
-
-static int com_create()
-{
- uint64_t zero = 0ULL;
- int ret = create_tables();
-
- 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:
- close_all_tables();
- return ret;
-}
-
-static int read_uid_file(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;
-}
-
-static int com_select(void)
-{
- int ret;
-
- 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;
-}
-
-static int check_args(void)
-{
- int i, ret;
-
- if (!conf.uid_given)
- return 0;
+ if (conf.help_given)
+ line = gengetopt_args_info_help;
+ else
+ line = gengetopt_args_info_detailed_help;
+ for (; *line; line++)
+ printf("%s\n", *line);
- admissible_uids = para_malloc(conf.uid_given * sizeof(*admissible_uids));
+ 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);
- 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;
+ 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", error_txt(-ret));
+ ERROR_LOG("%s\n", adu_strerror(-ret));
return -EXIT_FAILURE;
}
+ cmdline_parser_free(&conf);
+ select_cmdline_parser_free(&select_conf);
return EXIT_SUCCESS;
}
projects / adu.git / blobdiff