create.c

   1 /*
   2  * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file create.c The create mode of adu. */
   8
   9 #include <dirent.h> /* readdir() */
  10 #include "format.h"
  11 #include "adu.h"
  12 #include "gcc-compat.h"
  13 #include "cmdline.h"
  14 #include "fd.h"
  15 #include "string.h"
  16 #include "error.h"
  17 #include "user.h"
  18
  19 /* Id of the device containing the base dir. */
  20 static dev_t device_id;
  21
  22 static int add_directory(char *dirname, uint64_t *dir_num, uint64_t *parent_dir_num,
  23                 uint64_t *dir_size, uint64_t *dir_files)
  24 {
  25         struct osl_object dir_objects[NUM_DT_COLUMNS];
  26
  27         INFO_LOG("adding #%llu: %s\n", (long long unsigned)*dir_num, dirname);
  28         dir_objects[DT_NAME].data = dirname;
  29         dir_objects[DT_NAME].size = strlen(dirname) + 1;
  30         dir_objects[DT_NUM].data = dir_num;
  31         dir_objects[DT_NUM].size = sizeof(*dir_num);
  32         dir_objects[DT_PARENT_NUM].data = parent_dir_num;
  33         dir_objects[DT_PARENT_NUM].size = sizeof(*parent_dir_num);
  34         dir_objects[DT_BYTES].data = dir_size;
  35         dir_objects[DT_BYTES].size = sizeof(*dir_size);
  36         dir_objects[DT_FILES].data = dir_files;
  37         dir_objects[DT_FILES].size = sizeof(*dir_files);
  38         return osl(osl_add_row(dir_table, dir_objects));
  39 }
  40
  41 static int update_user_row(struct osl_table *t, uint64_t dir_num,
  42                 uint64_t *add)
  43 {
  44         struct osl_row *row;
  45         struct osl_object obj = {.data = &dir_num, .size = sizeof(dir_num)};
  46
  47         int ret = osl(osl_get_row(t, UT_DIR_NUM, &obj, &row));
  48
  49         if (ret == -E_OSL && osl_errno != E_OSL_RB_KEY_NOT_FOUND)
  50                 return ret;
  51         if (ret < 0) { /* this is the first file we add */
  52                 struct osl_object objects[NUM_UT_COLUMNS];
  53                 uint64_t num_files = 1;
  54
  55                 objects[UT_DIR_NUM].data = &dir_num;
  56                 objects[UT_DIR_NUM].size = sizeof(dir_num);
  57                 objects[UT_BYTES].data = add;
  58                 objects[UT_BYTES].size = sizeof(*add);
  59                 objects[UT_FILES].data = &num_files;
  60                 objects[UT_FILES].size = sizeof(num_files);
  61                 INFO_LOG("######################### ret: %d\n", ret);
  62                 ret = osl(osl_add_row(t, objects));
  63                 INFO_LOG("######################### ret: %d\n", ret);
  64                 return ret;
  65         } else { /* add size and increment file count */
  66                 uint64_t num;
  67                 struct osl_object obj1, obj2 = {.data = &num, .size = sizeof(num)};
  68
  69                 ret = osl(osl_get_object(t, row, UT_BYTES, &obj1));
  70                 if (ret < 0)
  71                         return ret;
  72                 num = *(uint64_t *)obj1.data + *add;
  73                 ret = osl(osl_update_object(t, row, UT_BYTES, &obj2));
  74                 if (ret < 0)
  75                         return ret;
  76                 ret = osl(osl_get_object(t, row, UT_FILES, &obj1));
  77                 if (ret < 0)
  78                         return ret;
  79                 num = *(uint64_t *)obj1.data + 1;
  80                 return osl(osl_update_object(t, row, UT_FILES, &obj2));
  81         }
  82 }
  83
  84 static int scan_dir(char *dirname, uint64_t *parent_dir_num)
  85 {
  86         DIR *dir;
  87         struct dirent *entry;
  88         int ret, cwd_fd, ret2;
  89         uint64_t dir_size = 0, dir_files = 0;
  90         /* dir count. */
  91         static uint64_t current_dir_num;
  92
  93         uint64_t this_dir_num = ++current_dir_num;
  94
  95         check_signals();
  96         DEBUG_LOG("----------------- %llu: %s\n", (long long unsigned)current_dir_num, dirname);
  97         ret = adu_opendir(dirname, &dir, &cwd_fd);
  98         if (ret < 0) {
  99                 if (ret != -ERRNO_TO_ERROR(EACCES))
 100                         return ret;
 101                 WARNING_LOG("permission denied for %s\n", dirname);
 102                 return 1;
 103         }
 104         while ((entry = readdir(dir))) {
 105                 mode_t m;
 106                 struct stat64 s;
 107                 uint32_t uid;
 108                 uint64_t size;
 109                 struct user_info *ui;
 110
 111                 if (!strcmp(entry->d_name, "."))
 112                         continue;
 113                 if (!strcmp(entry->d_name, ".."))
 114                         continue;
 115                 if (lstat64(entry->d_name, &s) == -1) {
 116                         WARNING_LOG("lstat64 error for %s/%s (%s)\n",
 117                                 dirname, entry->d_name, strerror(errno));
 118                         continue;
 119                 }
 120                 m = s.st_mode;
 121                 if (!S_ISREG(m) && !S_ISDIR(m))
 122                         continue;
 123                 if (S_ISDIR(m)) {
 124                         if (conf.one_file_system_given && s.st_dev != device_id)
 125                                 continue;
 126                         ret = scan_dir(entry->d_name, &this_dir_num);
 127                         if (ret < 0)
 128                                 goto out;
 129                         continue;
 130                 }
 131                 /* regular file */
 132                 size = s.st_size;
 133                 dir_size += size;
 134                 dir_files++;
 135                 uid = s.st_uid;
 136                 ret = search_uid(uid, NULL, CREATE_USER_TABLE | OPEN_USER_TABLE, &ui);
 137                 if (ret < 0)
 138                         goto out;
 139                 ui->bytes += size;
 140                 ui->files++;
 141                 ret = update_user_row(ui->table, this_dir_num, &size);
 142                 if (ret < 0)
 143                         goto out;
 144         }
 145         ret = add_directory(dirname, &this_dir_num, parent_dir_num,
 146                         &dir_size, &dir_files);
 147 out:
 148         closedir(dir);
 149         ret2 = adu_fchdir(cwd_fd);
 150         if (ret2 < 0 && ret >= 0)
 151                 ret = ret2;
 152         close(cwd_fd);
 153         return ret;
 154 }
 155
 156 int com_create(void)
 157 {
 158         uint64_t zero = 0ULL;
 159         int ret;
 160         struct stat statbuf;
 161
 162         if (lstat(conf.base_dir_arg, &statbuf) == -1)
 163                 return -ERRNO_TO_ERROR(errno);
 164         if (!S_ISDIR(statbuf.st_mode))
 165                 return -ERRNO_TO_ERROR(ENOTDIR);
 166         device_id = statbuf.st_dev;
 167         create_hash_table(conf.hash_table_bits_arg);
 168         ret = open_dir_table(1);
 169         if (ret < 0)
 170                 return ret;
 171         check_signals();
 172         ret = scan_dir(conf.base_dir_arg, &zero);
 173         if (ret < 0)
 174                 goto out;
 175         ret = write_uid_file();
 176 out:
 177         close_all_tables();
 178         return ret;
 179 }