#include "adu.h"
#include <dirent.h> /* readdir() */
#include <pwd.h>
+#include "format.h"
+#include "select.h"
#include "gcc-compat.h"
#include "cmdline.h"
/** 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
*
.column_descriptions = dir_table_cols,
};
+/*
+ * The columns of the per-user tables.
+ *
+ * Adu tracks disk usage on a per-user basis. For each user, a user table is
+ * being created. The rows of the user table have three columns: The directory
+ * number that may be resolved to the path using the directory table, the
+ * number of bytes and the number of files in that directory owned by the given
+ * user.
+ */
static struct osl_column_description user_table_cols[] = {
[UT_DIR_NUM] = {
.storage_type = OSL_MAPPED_STORAGE,
},
};
-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.
*
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)
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 make_message("%s/uid_list", conf.database_dir_arg);
}
+void sort_hash_table(int (*comp)(const void *, const void *))
+{
+ qsort(uid_hash_table, uid_hash_table_size, sizeof(struct user_info),
+ comp);
+}
+
int open_dir_table(int create)
{
dir_table_desc.dir = adu_strdup(conf.database_dir_arg);
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;
+}
+
+static int print_complete_help_and_die(void)
+{
+ const char **line;
+ select_cmdline_parser_init(&select_conf);
+
+ if (conf.help_given)
+ line = gengetopt_args_info_help;
+ else
+ line = gengetopt_args_info_detailed_help;
+
+ printf("adu command line options:\n");
+ printf("=========================\n");
+ 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");
+ printf("===============\n");
+ for (; *line; line++)
+ printf("%s\n", *line);
+ printf("interactive commands:\n");
+ printf("=====================\n");
+ print_interactive_help();
+ exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
.initialize = 1,
.check_required = 0,
.check_ambiguity = 0,
- .print_errors = 1
+ .print_errors = 0
};
+ /* 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();
+ 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 = -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