+/*
+ * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
+ *
+ * Licensed under the GPL v2. For licencing details see COPYING.
+ */
+
+/** \file select.c The select mode of adu. */
+
+#include <dirent.h> /* readdir() */
+#include "adu.h"
+#include "gcc-compat.h"
+#include "cmdline.h"
+#include "fd.h"
+#include "string.h"
+#include "error.h"
+#include "portable_io.h"
+
+/** The decimal representation of an uint64_t never exceeds that size. */
+#define FORMATED_VALUE_SIZE 25
+
+/* these get filled in by the select command. */
+static char count_unit_buf[4] = "( )", size_unit_buf[4] = "( )";
+
+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;
+};
+
+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 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,
+};
+
+static 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,
+};
+
+static const char size_unit_abbrevs[] = " BKMGT";
+static 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;
+}
+
+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 = adu_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 = adu_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;
+}
+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];
+
+ check_signals();
+ 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);
+ free(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 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;
+
+ check_signals();
+ 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);
+ free(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 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 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 void print_id_stats(void)
+{
+ struct user_info *ui;
+
+ printf("User summary "
+ "(pw_name/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%s\t%u\t%s\t%s\t%s\n",
+ ui->pw_name? ui->pw_name : "?",
+ (unsigned)ui->uid,
+ formated_dir_count,
+ formated_file_count,
+ formated_bytes
+ );
+ }
+}
+
+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("%s (uid %u), by size%s:\n",
+ ui->pw_name? ui->pw_name : "?", (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("\n%s (uid %u), by file count%s:\n",
+ ui->pw_name? ui->pw_name : "?", (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 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 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:
+ adu_munmap(map, size);
+ return ret;
+}
+
+int com_select(void)
+{
+ 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';
+
+ ret = open_dir_table();
+ if (ret < 0)
+ return ret;
+ check_signals();
+ ret = read_uid_file();
+ if (ret < 0)
+ return ret;
+ check_signals();
+ ret = print_statistics();
+ close_all_tables();
+ return ret;
+}