#include "string.h"
#include "error.h"
#include "portable_io.h"
+#include "select.cmdline.h"
DEFINE_ERRLIST;
int osl_errno;
/** Command line and config file options. */
struct gengetopt_args_info conf;
-/** Global dir count. */
-uint64_t num_dirs = 0;
-/** Global files count. */
-uint64_t num_files = 0;
-/** Global bytes count. */
-uint64_t num_bytes = 0;
+/** Options passed to --select-options. */
+struct select_args_info select_conf;
/** The number of different uids found so far. */
uint32_t num_uids = 0;
+/** This is always a power of two. It is set in create_hash_table(). */
+static uint32_t uid_hash_table_size;
+
/**
* Contains info for each user that owns at least one regular file.
*
* 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.
*/
-struct user_info *uid_hash_table = NULL;
+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;
+}
/**
* The table containing the directory names and statistics.
*/
struct osl_table *dir_table = NULL;
-/**
- * The array of all uid ranges that were given at the command line.
- */
-struct uid_range *admissible_uids;
-
-/** 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)))
-
/**
* Compare the size of two directories
*
},
};
-static 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 = 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 = adu_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;
-}
-
/**
* The log function.
*
va_end(argp);
}
-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 int open_user_table(struct user_info *ui, int create)
{
int ret;
return ret;
}
-#define uid_hash_bits 8
-uint32_t uid_hash_table_size = 1 << uid_hash_bits;
-#define PRIME1 0x811c9dc5
+int for_each_admissible_user(int (*func)(struct user_info *, void *),
+ void *data)
+{
+ struct user_info *ui = uid_hash_table;
+
+ if (!ui)
+ return -ERRNO_TO_ERROR(EFAULT);
+
+ for (; ui < uid_hash_table + uid_hash_table_size; ui++) {
+ int ret;
+
+ if (!ui_used(ui) || !ui_admissible(ui))
+ continue;
+ ret = func(ui, data);
+ if (ret < 0)
+ return ret;
+ }
+ return 1;
+}
+
+#define PRIME1 0xb11924e1
#define PRIME2 0x01000193
-void create_hash_table(void)
+void create_hash_table(unsigned bits)
{
- uid_hash_table = adu_calloc(uid_hash_table_size
- * sizeof(struct user_info));
+ uid_hash_table_size = 1 << bits;
+ uid_hash_table = adu_calloc(uid_hash_table_size *
+ sizeof(struct user_info));
}
static void free_hash_table(void)
uid_hash_table = NULL;
}
-static int create_tables(void)
-{
- int ret;
-
- dir_table_desc.dir = adu_strdup(conf.database_dir_arg);
- ret = osl(osl_create_table(&dir_table_desc));
- if (ret < 0)
- return ret;
- create_hash_table();
- return 1;
-}
-
static void close_dir_table(void)
{
int ret;
dir_table = NULL;
}
-static void close_user_table(struct user_info *ui)
+static int close_user_table(struct user_info *ui, __a_unused void *data)
{
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",
ui->desc = NULL;
ui->table = NULL;
ui->flags = 0;
+ return 1;
}
static void close_user_tables(void)
{
- struct user_info *ui;
-
- FOR_EACH_USER(ui)
- close_user_table(ui);
+ for_each_admissible_user(close_user_table, NULL);
}
void close_all_tables(void)
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;
}
% uid_hash_table_size;
}
-static int uid_is_admissible(uint32_t uid)
+static int uid_is_admissible(uint32_t uid, struct uid_range *urs)
{
- int i;
-
- for (i = 0; i < conf.uid_given; i++) {
- struct uid_range *ur = admissible_uids + i;
+ struct uid_range *ur;
+ int ret = 1;
+ if (!urs) /* empty array means all uids are allowed */
+ return 1;
+ FOR_EACH_UID_RANGE(ur, urs)
if (ur->low <= uid && ur->high >= uid)
- break;
- }
- i = !conf.uid_given || i < conf.uid_given;
+ goto out;
+ ret = 0;
+out:
DEBUG_LOG("uid %u is %sadmissible\n", (unsigned)uid,
- i? "" : "not ");
- return i;
+ ret? "" : "not ");
+ return ret;
}
-int search_uid(uint32_t uid, enum search_uid_flags flags,
- struct user_info **ui_ptr)
+int search_uid(uint32_t uid, struct uid_range *urs,
+ enum search_uid_flags flags, struct user_info **ui_ptr)
{
uint32_t p;
return -E_BAD_UID;
ui->uid = uid;
ui->flags |= UI_FL_SLOT_USED;
- if (!uid_is_admissible(uid))
+ if (!uid_is_admissible(uid, urs))
return 0;
ui->flags |= UI_FL_ADMISSIBLE;
ret = open_user_table(ui, flags & CREATE_USER_TABLE);
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));
- }
-}
-
-/* id of the device containing the base dir. */
-static dev_t device_id;
-
-static 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;
-
- check_signals();
- DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)num_dirs, dirname);
- ret = adu_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)) {
- if (conf.one_file_system_given && s.st_dev != device_id)
- continue;
- 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 = adu_fchdir(cwd_fd);
- if (ret2 < 0 && ret >= 0)
- ret = ret2;
- close(cwd_fd);
- return ret;
-}
-
char *get_uid_list_name(void)
{
return make_message("%s/uid_list", conf.database_dir_arg);
}
-static int write_uid_list(void)
+void sort_hash_table(int (*comp)(const void *, const 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 = adu_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 = adu_write_file(filename, buf, size);
- free(filename);
- free(buf);
- return ret;
+ qsort(uid_hash_table, uid_hash_table_size, sizeof(struct user_info),
+ comp);
}
-int open_dir_table(void)
+int open_dir_table(int create)
{
- if (!dir_table_desc.dir) /* we did not create the table */
- dir_table_desc.dir = adu_strdup(conf.database_dir_arg);
+ dir_table_desc.dir = adu_strdup(conf.database_dir_arg);
+
+ if (create) {
+ int ret = osl(osl_create_table(&dir_table_desc));
+ if (ret < 0) {
+ free((char *)dir_table_desc.dir);
+ return ret;
+ }
+ }
return osl(osl_open_table(&dir_table_desc, &dir_table));
}
-static int com_create()
-{
- uint64_t zero = 0ULL;
- int ret;
- struct stat statbuf;
-
- if (lstat(conf.base_dir_arg, &statbuf) == -1)
- return -ERRNO_TO_ERROR(errno);
- if (!S_ISDIR(statbuf.st_mode))
- return -ERRNO_TO_ERROR(ENOTDIR);
- device_id = statbuf.st_dev;
- ret = create_tables();
- if (ret < 0)
- return ret;
- check_signals();
- ret = open_dir_table();
- if (ret < 0)
- return ret;
- check_signals();
- 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 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) {
conf.base_dir_arg[len] = '\0';
}
}
- if (!conf.uid_given)
- return 0;
- admissible_uids = adu_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;
}
int main(int argc, char **argv)
struct cmdline_parser_params params = {
.override = 0,
.initialize = 1,
- .check_required = 0,
- .check_ambiguity = 0,
+ .check_required = 1,
+ .check_ambiguity = 1,
.print_errors = 1
};
cmdline_parser_ext(argc, argv, &conf, ¶ms); /* aborts on errors */
- ret = init_signals();
+ ret = check_args();
if (ret < 0)
goto out;
- ret = check_args();
+ 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);
if (ret < 0) {
ERROR_LOG("%s\n", adu_strerror(-ret));
return -EXIT_FAILURE;
projects / adu.git / blobdiff