Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/plugins/quota/quota-fs.c @ 4509:e5e79558ac2d HEAD

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Added support for multiple quota roots, rules and storages. The configuration has changed, userdb now needs to return "quota_rule" settings instead. Much of the code changes were done by Tianyan Liu.
author Timo Sirainen <timo.sirainen@movial.fi>
date Sun, 30 Jul 2006 20:58:38 +0300
parents ce47b2f84cdb
children 511f1f5c76fa
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 #ifdef HAVE_STRUCT_DQBLK_CURSPACE
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24 # define dqb_curblocks dqb_curspace
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25 #endif
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26
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27 #ifndef DEV_BSIZE
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28 # define DEV_BSIZE 512
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29 #endif
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31 struct fs_quota_mountpoint {
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32 char *mount_path;
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33 char *device_path;
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34 char *type;
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35
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36 #ifdef HAVE_Q_QUOTACTL
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37 int fd;
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38 char *path;
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39 #endif
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40 };
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41
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42 struct fs_quota_root {
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43 struct quota_root root;
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45 uid_t uid;
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46 struct fs_quota_mountpoint *mount;
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47 };
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48
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49 extern struct quota_backend quota_backend_fs;
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50
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51 static struct quota_root *fs_quota_alloc(void)
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52 {
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53 struct fs_quota_root *root;
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54
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55 root = i_new(struct fs_quota_root, 1);
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56 root->uid = geteuid();
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57
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58 return &root->root;
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59 }
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60
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61 static void fs_quota_mountpoint_free(struct fs_quota_mountpoint *mount)
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62 {
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63 #ifdef HAVE_Q_QUOTACTL
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64 if (mount->fd != -1) {
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65 if (close(mount->fd) < 0)
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66 i_error("close(%s) failed: %m", mount->path);
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67 }
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68 i_free(mount->path);
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69 #endif
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71 i_free(mount->device_path);
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72 i_free(mount->mount_path);
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73 i_free(mount->type);
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74 i_free(mount);
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75 }
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77 static void fs_quota_deinit(struct quota_root *_root)
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78 {
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79 struct fs_quota_root *root = (struct fs_quota_root *)_root;
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81 if (root->mount != NULL)
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82 fs_quota_mountpoint_free(root->mount);
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83 i_free(root);
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84 }
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86 static struct fs_quota_mountpoint *fs_quota_mountpoint_get(const char *dir)
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87 {
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88 struct fs_quota_mountpoint *mount;
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89 struct mountpoint point;
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90 int ret;
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91
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92 ret = mountpoint_get(dir, default_pool, &point);
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93 if (ret <= 0)
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94 return NULL;
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95
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96 mount = i_new(struct fs_quota_mountpoint, 1);
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97 mount->device_path = point.device_path;
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98 mount->mount_path = point.mount_path;
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99 mount->type = point.type;
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100 return mount;
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101 }
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102
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103 static struct fs_quota_root *
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104 fs_quota_root_find_mountpoint(struct quota *quota,
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105 const struct fs_quota_mountpoint *mount)
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106 {
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107 struct quota_root *const *roots;
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108 struct fs_quota_root *empty = NULL;
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diff changeset
109 unsigned int i, count;
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110
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diff changeset
111 roots = array_get(&quota->roots, &count);
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diff changeset
112 for (i = 0; i < count; i++) {
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diff changeset
113 if (roots[i]->backend == &quota_backend_fs) {
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diff changeset
114 struct fs_quota_root *root =
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diff changeset
115 (struct fs_quota_root *)roots[i];
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diff changeset
116
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diff changeset
117 if (root->mount == NULL)
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118 empty = root;
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diff changeset
119 else if (strcmp(root->mount->mount_path,
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diff changeset
120 mount->mount_path) == 0)
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121 return root;
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122 }
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123 }
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124 return empty;
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125 }
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126
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diff changeset
127 static void fs_quota_storage_added(struct quota *quota,
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128 struct mail_storage *storage)
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129 {
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130 struct fs_quota_mountpoint *mount;
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131 struct quota_root *_root;
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132 struct fs_quota_root *root;
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133 const char *dir;
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134 bool is_file;
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135
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136 dir = mail_storage_get_mailbox_path(storage, "", &is_file);
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137 mount = fs_quota_mountpoint_get(dir);
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138 if (getenv("DEBUG") != NULL) {
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139 i_info("fs quota add storage dir = %s", dir);
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140 i_info("fs quota block device = %s", mount->device_path);
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141 i_info("fs quota mount point = %s", mount->mount_path);
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142 }
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143
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144 root = fs_quota_root_find_mountpoint(quota, mount);
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145 if (root != NULL && root->mount != NULL) {
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146 /* already exists */
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diff changeset
147 fs_quota_mountpoint_free(mount);
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148 return;
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149 }
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150
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151 if (root == NULL) {
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152 /* create a new root for this mountpoint */
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153 _root = quota_root_init(quota, quota_backend_fs.name);
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154 root = (struct fs_quota_root *)_root;
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155 root->root.name =
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diff changeset
156 p_strdup_printf(root->root.pool, "%s%d",
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diff changeset
157 quota_backend_fs.name,
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diff changeset
158 array_count(&quota->roots));
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159 } else {
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160 /* this is the default root. */
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161 }
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diff changeset
162 root->mount = mount;
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diff changeset
163
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164 #ifdef HAVE_Q_QUOTACTL
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165 if (mount->path == NULL) {
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166 mount->path = i_strconcat(mount->mount_path, "/quotas", NULL);
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167 mount->fd = open(mount->path, O_RDONLY);
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diff changeset
168 if (mount->fd == -1 && errno != ENOENT)
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diff changeset
169 i_error("open(%s) failed: %m", mount->path);
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170 }
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171 #endif
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172 }
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173
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diff changeset
174 static const char *const *
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175 fs_quota_root_get_resources(struct quota_root *root __attr_unused__)
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176 {
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177 static const char *resources[] = { QUOTA_NAME_STORAGE, NULL };
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178
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179 return resources;
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180 }
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181
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diff changeset
182 static int
4084
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diff changeset
183 fs_quota_get_resource(struct quota_root *_root, const char *name,
3751
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diff changeset
184 uint64_t *value_r, uint64_t *limit_r)
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diff changeset
185 {
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diff changeset
186 struct fs_quota_root *root = (struct fs_quota_root *)_root;
3751
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diff changeset
187 struct dqblk dqblk;
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f60237ad2edd Support Solaris's ioctl(Q_QUOTACTL).
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diff changeset
188 #ifdef HAVE_Q_QUOTACTL
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189 struct quotctl ctl;
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diff changeset
190 #endif
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191
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diff changeset
192 *value_r = 0;
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193 *limit_r = 0;
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diff changeset
194
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diff changeset
195 if (strcasecmp(name, QUOTA_NAME_STORAGE) != 0 || root->mount == NULL)
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196 return 0;
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197
4387
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diff changeset
198 #if defined (HAVE_QUOTACTL) && defined(HAVE_SYS_QUOTA_H)
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diff changeset
199 /* Linux */
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diff changeset
200 #ifdef HAVE_LINUX_DQBLK_XFS_H
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diff changeset
201 if (strcmp(root->mount->type, "xfs") == 0) {
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
202 /* XFS */
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
203 struct fs_disk_quota xdqblk;
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diff changeset
204
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
205 if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA),
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diff changeset
206 root->mount->device_path,
4448
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diff changeset
207 root->uid, (caddr_t)&xdqblk) < 0) {
4387
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diff changeset
208 i_error("quotactl(Q_XGETQUOTA, %s) failed: %m",
670dd15edbf3 Added support for XFS disk quotas. Patch by Pawel Jarosz
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diff changeset
209 root->mount->device_path);
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diff changeset
210 return -1;
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diff changeset
211 }
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diff changeset
212
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diff changeset
213 /* values always returned in 512 byte blocks */
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diff changeset
214 *value_r = xdqblk.d_bcount >> 1;
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diff changeset
215 *limit_r = xdqblk.d_blk_softlimit >> 1;
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diff changeset
216 } else
4192
26e028337e1e quotactl() parameters were backwards for BSDs and AIX.
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diff changeset
217 #endif
4387
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diff changeset
218 {
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diff changeset
219 /* ext2, ext3 */
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Timo Sirainen <tss@iki.fi>
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diff changeset
220 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA),
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diff changeset
221 root->mount->device_path,
4448
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diff changeset
222 root->uid, (caddr_t)&dqblk) < 0) {
4387
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diff changeset
223 i_error("quotactl(Q_GETQUOTA, %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
224 root->mount->device_path);
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diff changeset
225 return -1;
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diff changeset
226 }
4448
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diff changeset
227
cf334cc732e7 Attempting to fix quota block calculations to be correct.
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parents: 4387
diff changeset
228 *value_r = dqblk.dqb_curblocks / 1024;
cf334cc732e7 Attempting to fix quota block calculations to be correct.
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parents: 4387
diff changeset
229 *limit_r = dqblk.dqb_bsoftlimit;
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230 }
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231 #elif defined(HAVE_QUOTACTL)
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232 /* BSD, AIX */
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233 if (quotactl(root->mount->mount_path, QCMD(Q_GETQUOTA, USRQUOTA),
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234 root->uid, (void *)&dqblk) < 0) {
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235 i_error("quotactl(Q_GETQUOTA, %s) failed: %m",
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236 root->mount->mount_path);
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237 quota_set_error(_root->setup->quota, "Internal quota error");
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238 return -1;
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239 }
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240 *value_r = (uint64_t)dqblk.dqb_curblocks * 1024 / DEV_BSIZE;
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241 *limit_r = (uint64_t)dqblk.dqb_bsoftlimit * 1024 / DEV_BSIZE;
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242 #else
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243 /* Solaris */
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244 if (root->mount->fd == -1)
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245 return 0;
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246
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247 ctl.op = Q_GETQUOTA;
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248 ctl.uid = root->uid;
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249 ctl.addr = (caddr_t)&dqblk;
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250 if (ioctl(root->mount->fd, Q_QUOTACTL, &ctl) < 0) {
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251 i_error("ioctl(%s, Q_QUOTACTL) failed: %m", root->mount->path);
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252 quota_set_error(_root->setup->quota, "Internal quota error");
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253 return -1;
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254 }
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255 *value_r = (uint64_t)dqblk.dqb_curblocks * 1024 / DEV_BSIZE;
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256 *limit_r = (uint64_t)dqblk.dqb_bsoftlimit * 1024 / DEV_BSIZE;
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257 #endif
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258 return 1;
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259 }
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260
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261 static int
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262 fs_quota_update(struct quota_root *root __attr_unused__,
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263 struct quota_transaction_context *ctx __attr_unused__)
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264 {
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265 return 0;
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266 }
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267
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268 struct quota_backend quota_backend_fs = {
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269 "fs",
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270
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271 {
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272 fs_quota_alloc,
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273 NULL,
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274 fs_quota_deinit,
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275
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276 fs_quota_storage_added,
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277
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278 fs_quota_root_get_resources,
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279 fs_quota_get_resource,
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280 fs_quota_update
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281 }
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282 };
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283
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284 #endif