Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/plugins/quota/quota-fs.c @ 4547:912e6d3053e8 HEAD

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Default _LINUX_QUOTA_VERSION to 1 instead of 2, since older Linux v1 sys/quota.h didn't define it at all.
author Timo Sirainen <tss@iki.fi>
date Mon, 07 Aug 2006 01:22:22 +0300
parents f598896bb40a
children ef71b2fdd433
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Copyright (C) 2005-2006 Timo Sirainen */
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2
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3 /* Only for reporting filesystem quota */
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4
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5 #include "lib.h"
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6 #include "array.h"
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7 #include "str.h"
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8 #include "mountpoint.h"
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9 #include "quota-private.h"
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10 #include "quota-fs.h"
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11
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12 #ifdef HAVE_FS_QUOTA
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13
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14 #include <stdio.h>
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15 #include <stdlib.h>
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16 #include <fcntl.h>
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17 #include <unistd.h>
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18 #include <sys/stat.h>
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19 #ifdef HAVE_LINUX_DQBLK_XFS_H
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20 # include <linux/dqblk_xfs.h>
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21 #endif
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22
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23 #ifndef DEV_BSIZE
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24 # define DEV_BSIZE 512
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25 #endif
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26
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27 /* Older sys/quota.h doesn't define _LINUX_QUOTA_VERSION at all, which means
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28 it supports only v1 quota */
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29 #ifndef _LINUX_QUOTA_VERSION
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30 # define _LINUX_QUOTA_VERSION 1
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31 #endif
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32
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33 struct fs_quota_mountpoint {
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34 char *mount_path;
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35 char *device_path;
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36 char *type;
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37
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38 #ifdef HAVE_Q_QUOTACTL
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39 int fd;
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40 char *path;
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41 #endif
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42 };
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43
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44 struct fs_quota_root {
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45 struct quota_root root;
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47 uid_t uid;
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48 struct fs_quota_mountpoint *mount;
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49 };
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50
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51 extern struct quota_backend quota_backend_fs;
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52
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53 static struct quota_root *fs_quota_alloc(void)
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54 {
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55 struct fs_quota_root *root;
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56
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57 root = i_new(struct fs_quota_root, 1);
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58 root->uid = geteuid();
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59
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60 return &root->root;
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61 }
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62
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63 static void fs_quota_mountpoint_free(struct fs_quota_mountpoint *mount)
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64 {
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65 #ifdef HAVE_Q_QUOTACTL
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66 if (mount->fd != -1) {
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67 if (close(mount->fd) < 0)
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68 i_error("close(%s) failed: %m", mount->path);
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69 }
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70 i_free(mount->path);
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71 #endif
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73 i_free(mount->device_path);
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74 i_free(mount->mount_path);
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75 i_free(mount->type);
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76 i_free(mount);
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77 }
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79 static void fs_quota_deinit(struct quota_root *_root)
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80 {
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81 struct fs_quota_root *root = (struct fs_quota_root *)_root;
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83 if (root->mount != NULL)
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84 fs_quota_mountpoint_free(root->mount);
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85 i_free(root);
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86 }
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88 static struct fs_quota_mountpoint *fs_quota_mountpoint_get(const char *dir)
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89 {
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90 struct fs_quota_mountpoint *mount;
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91 struct mountpoint point;
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92 int ret;
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93
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94 ret = mountpoint_get(dir, default_pool, &point);
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95 if (ret <= 0)
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96 return NULL;
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97
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98 mount = i_new(struct fs_quota_mountpoint, 1);
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99 mount->device_path = point.device_path;
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100 mount->mount_path = point.mount_path;
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101 mount->type = point.type;
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102 return mount;
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103 }
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104
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105 static struct fs_quota_root *
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106 fs_quota_root_find_mountpoint(struct quota *quota,
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107 const struct fs_quota_mountpoint *mount)
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108 {
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109 struct quota_root *const *roots;
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110 struct fs_quota_root *empty = NULL;
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diff changeset
111 unsigned int i, count;
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112
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diff changeset
113 roots = array_get(&quota->roots, &count);
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diff changeset
114 for (i = 0; i < count; i++) {
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diff changeset
115 if (roots[i]->backend.name == quota_backend_fs.name) {
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diff changeset
116 struct fs_quota_root *root =
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117 (struct fs_quota_root *)roots[i];
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118
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diff changeset
119 if (root->mount == NULL)
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diff changeset
120 empty = root;
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diff changeset
121 else if (strcmp(root->mount->mount_path,
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122 mount->mount_path) == 0)
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123 return root;
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124 }
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125 }
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126 return empty;
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127 }
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128
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129 static void fs_quota_storage_added(struct quota *quota,
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130 struct mail_storage *storage)
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131 {
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132 struct fs_quota_mountpoint *mount;
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133 struct quota_root *_root;
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134 struct fs_quota_root *root;
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135 const char *dir;
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diff changeset
136 bool is_file;
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137
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diff changeset
138 dir = mail_storage_get_mailbox_path(storage, "", &is_file);
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139 mount = fs_quota_mountpoint_get(dir);
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140 if (getenv("DEBUG") != NULL) {
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141 i_info("fs quota add storage dir = %s", dir);
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142 i_info("fs quota block device = %s", mount->device_path);
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143 i_info("fs quota mount point = %s", mount->mount_path);
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144 }
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145
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146 root = fs_quota_root_find_mountpoint(quota, mount);
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147 if (root != NULL && root->mount != NULL) {
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148 /* already exists */
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149 fs_quota_mountpoint_free(mount);
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150 return;
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151 }
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152
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diff changeset
153 if (root == NULL) {
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154 /* create a new root for this mountpoint */
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diff changeset
155 _root = quota_root_init(quota, quota_backend_fs.name);
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156 root = (struct fs_quota_root *)_root;
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diff changeset
157 root->root.name =
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diff changeset
158 p_strdup_printf(root->root.pool, "%s%d",
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diff changeset
159 quota_backend_fs.name,
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diff changeset
160 array_count(&quota->roots));
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161 } else {
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diff changeset
162 /* this is the default root. */
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163 }
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diff changeset
164 root->mount = mount;
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165
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diff changeset
166 #ifdef HAVE_Q_QUOTACTL
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167 if (mount->path == NULL) {
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168 mount->path = i_strconcat(mount->mount_path, "/quotas", NULL);
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diff changeset
169 mount->fd = open(mount->path, O_RDONLY);
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diff changeset
170 if (mount->fd == -1 && errno != ENOENT)
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171 i_error("open(%s) failed: %m", mount->path);
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172 }
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173 #endif
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174 }
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175
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diff changeset
176 static const char *const *
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177 fs_quota_root_get_resources(struct quota_root *root __attr_unused__)
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178 {
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179 static const char *resources[] = { QUOTA_NAME_STORAGE, NULL };
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180
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181 return resources;
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182 }
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diff changeset
183
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diff changeset
184 static int
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diff changeset
185 fs_quota_get_resource(struct quota_root *_root, const char *name,
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diff changeset
186 uint64_t *value_r, uint64_t *limit_r)
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diff changeset
187 {
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diff changeset
188 struct fs_quota_root *root = (struct fs_quota_root *)_root;
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diff changeset
189 struct dqblk dqblk;
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diff changeset
190 #ifdef HAVE_Q_QUOTACTL
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191 struct quotctl ctl;
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192 #endif
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193
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194 *value_r = 0;
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195 *limit_r = 0;
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diff changeset
196
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diff changeset
197 if (strcasecmp(name, QUOTA_NAME_STORAGE) != 0 || root->mount == NULL)
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198 return 0;
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199
4387
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diff changeset
200 #if defined (HAVE_QUOTACTL) && defined(HAVE_SYS_QUOTA_H)
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diff changeset
201 /* Linux */
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diff changeset
202 #ifdef HAVE_LINUX_DQBLK_XFS_H
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diff changeset
203 if (strcmp(root->mount->type, "xfs") == 0) {
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diff changeset
204 /* XFS */
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
205 struct fs_disk_quota xdqblk;
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
206
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
207 if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA),
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parents: 4330
diff changeset
208 root->mount->device_path,
4448
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diff changeset
209 root->uid, (caddr_t)&xdqblk) < 0) {
4387
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diff changeset
210 i_error("quotactl(Q_XGETQUOTA, %s) failed: %m",
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
Timo Sirainen <tss@iki.fi>
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diff changeset
211 root->mount->device_path);
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diff changeset
212 return -1;
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213 }
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214
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diff changeset
215 /* values always returned in 512 byte blocks */
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diff changeset
216 *value_r = xdqblk.d_bcount >> 1;
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diff changeset
217 *limit_r = xdqblk.d_blk_softlimit >> 1;
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diff changeset
218 } else
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26e028337e1e quotactl() parameters were backwards for BSDs and AIX.
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diff changeset
219 #endif
4387
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diff changeset
220 {
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diff changeset
221 /* ext2, ext3 */
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Timo Sirainen <tss@iki.fi>
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diff changeset
222 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA),
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
223 root->mount->device_path,
4448
cf334cc732e7 Attempting to fix quota block calculations to be correct.
Timo Sirainen <tss@iki.fi>
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diff changeset
224 root->uid, (caddr_t)&dqblk) < 0) {
4387
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diff changeset
225 i_error("quotactl(Q_GETQUOTA, %s) failed: %m",
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
Timo Sirainen <tss@iki.fi>
parents: 4330
diff changeset
226 root->mount->device_path);
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diff changeset
227 if (errno == EINVAL) {
f598896bb40a Added --with-linux-quota configure option to specify which Linux quota
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parents: 4514
diff changeset
228 i_error("Dovecot was compiled with Linux quota "
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229 "v%d support, try changing it "
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230 "(--with-linux-quota configure option)",
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231 _LINUX_QUOTA_VERSION);
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232 }
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233 return -1;
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234 }
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235
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236 #if _LINUX_QUOTA_VERSION < 2
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237 *value_r = dqblk.dqb_curblocks / 1024;
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238 #else
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239 *value_r = dqblk.dqb_curspace / 1024;
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240 #endif
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241 *limit_r = dqblk.dqb_bsoftlimit;
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242 }
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243 #elif defined(HAVE_QUOTACTL)
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244 /* BSD, AIX */
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245 if (quotactl(root->mount->mount_path, QCMD(Q_GETQUOTA, USRQUOTA),
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246 root->uid, (void *)&dqblk) < 0) {
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247 i_error("quotactl(Q_GETQUOTA, %s) failed: %m",
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248 root->mount->mount_path);
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249 quota_set_error(_root->setup->quota, "Internal quota error");
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250 return -1;
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251 }
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252 *value_r = (uint64_t)dqblk.dqb_curblocks * 1024 / DEV_BSIZE;
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253 *limit_r = (uint64_t)dqblk.dqb_bsoftlimit * 1024 / DEV_BSIZE;
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254 #else
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255 /* Solaris */
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256 if (root->mount->fd == -1)
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257 return 0;
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258
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259 ctl.op = Q_GETQUOTA;
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260 ctl.uid = root->uid;
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261 ctl.addr = (caddr_t)&dqblk;
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262 if (ioctl(root->mount->fd, Q_QUOTACTL, &ctl) < 0) {
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263 i_error("ioctl(%s, Q_QUOTACTL) failed: %m", root->mount->path);
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264 quota_set_error(_root->setup->quota, "Internal quota error");
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265 return -1;
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266 }
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267 *value_r = (uint64_t)dqblk.dqb_curblocks * 1024 / DEV_BSIZE;
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268 *limit_r = (uint64_t)dqblk.dqb_bsoftlimit * 1024 / DEV_BSIZE;
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269 #endif
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270 return 1;
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271 }
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272
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273 static int
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274 fs_quota_update(struct quota_root *root __attr_unused__,
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275 struct quota_transaction_context *ctx __attr_unused__)
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276 {
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277 return 0;
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278 }
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279
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280 struct quota_backend quota_backend_fs = {
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281 "fs",
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282
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283 {
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284 fs_quota_alloc,
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285 NULL,
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286 fs_quota_deinit,
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287
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288 fs_quota_storage_added,
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289
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290 fs_quota_root_get_resources,
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291 fs_quota_get_resource,
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292 fs_quota_update
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293 }
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294 };
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295
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296 #endif