annotate src/lib-storage/index/dbox-single/sdbox-file.c @ 11764:8ec35eb6d7b3 HEAD

dbox: dbox_file_move() was used by only single-dbox, so moved it there.
author Timo Sirainen <tss@iki.fi>
date Fri, 09 Jul 2010 15:39:03 +0100
parents 1bb98ad1af8b
children 28eaaa23f2c6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /* Copyright (c) 2007-2010 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "eacces-error.h"
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5 #include "fdatasync-path.h"
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6 #include "mkdir-parents.h"
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7 #include "istream.h"
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8 #include "ostream.h"
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9 #include "sdbox-storage.h"
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10 #include "sdbox-file.h"
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11
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12 #include <stdio.h>
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13
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14 static void sdbox_file_init_paths(struct sdbox_file *file, const char *fname)
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15 {
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16 struct mailbox *box = &file->mbox->box;
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17 const char *alt_path;
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18
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19 i_free(file->file.primary_path);
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20 i_free(file->file.alt_path);
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21 file->file.primary_path =
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22 i_strdup_printf("%s/%s", box->path, fname);
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23
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24 alt_path = mailbox_list_get_path(box->list, box->name,
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25 MAILBOX_LIST_PATH_TYPE_ALT_MAILBOX);
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26 if (alt_path != NULL)
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27 file->file.alt_path = i_strdup_printf("%s/%s", alt_path, fname);
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28 }
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29
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30 struct dbox_file *sdbox_file_init(struct sdbox_mailbox *mbox, uint32_t uid)
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31 {
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32 struct sdbox_file *file;
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33 const char *fname;
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34
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35 file = i_new(struct sdbox_file, 1);
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36 file->file.storage = &mbox->storage->storage;
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37 file->mbox = mbox;
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38 T_BEGIN {
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39 if (uid != 0) {
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40 fname = t_strdup_printf(SDBOX_MAIL_FILE_FORMAT, uid);
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41 sdbox_file_init_paths(file, fname);
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42 file->uid = uid;
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43 } else {
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44 file->file.primary_path =
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45 i_strdup_printf("%s/%s",
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46 file->mbox->box.path,
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47 dbox_generate_tmp_filename());
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48 }
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49 } T_END;
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50 dbox_file_init(&file->file);
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51 return &file->file;
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52 }
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53
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54 struct dbox_file *sdbox_file_create(struct sdbox_mailbox *mbox)
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55 {
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56 struct dbox_file *file;
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57
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58 file = sdbox_file_init(mbox, 0);
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59 file->fd = file->storage->v.
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60 file_create_fd(file, file->primary_path, FALSE);
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61 return file;
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62 }
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63
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64 int sdbox_file_assign_uid(struct sdbox_file *file, uint32_t uid)
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65 {
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66 const char *old_path, *new_fname, *new_path;
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67
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68 i_assert(file->uid == 0);
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69 i_assert(uid != 0);
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70
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71 old_path = file->file.cur_path;
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72 new_fname = t_strdup_printf(SDBOX_MAIL_FILE_FORMAT, uid);
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73 new_path = t_strdup_printf("%s/%s", file->mbox->box.path,
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74 new_fname);
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75 if (rename(old_path, new_path) < 0) {
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76 mail_storage_set_critical(&file->file.storage->storage,
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77 "rename(%s, %s) failed: %m",
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78 old_path, new_path);
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79 return -1;
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80 }
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81 sdbox_file_init_paths(file, new_fname);
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82 file->uid = uid;
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83 return 0;
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84 }
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85
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86 int sdbox_file_create_fd(struct dbox_file *file, const char *path, bool parents)
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87 {
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88 struct sdbox_file *sfile = (struct sdbox_file *)file;
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89 struct mailbox *box = &sfile->mbox->box;
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90 const char *p, *dir;
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91 mode_t old_mask;
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92 int fd;
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93
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94 old_mask = umask(0666 & ~box->file_create_mode);
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95 fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
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96 umask(old_mask);
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97 if (fd == -1 && errno == ENOENT && parents &&
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98 (p = strrchr(path, '/')) != NULL) {
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99 dir = t_strdup_until(path, p);
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100 if (mkdir_parents_chgrp(dir, box->dir_create_mode,
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101 box->file_create_gid,
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102 box->file_create_gid_origin) < 0) {
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103 mail_storage_set_critical(box->storage,
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104 "mkdir_parents(%s) failed: %m", dir);
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105 return -1;
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106 }
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107 /* try again */
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108 old_mask = umask(0666 & ~box->file_create_mode);
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109 fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
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110 umask(old_mask);
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111 }
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112 if (fd == -1) {
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113 mail_storage_set_critical(box->storage,
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114 "open(%s, O_CREAT) failed: %m", path);
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115 } else if (box->file_create_gid == (gid_t)-1) {
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116 /* no group change */
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117 } else if (fchown(fd, (uid_t)-1, box->file_create_gid) < 0) {
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118 if (errno == EPERM) {
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119 mail_storage_set_critical(box->storage, "%s",
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120 eperm_error_get_chgrp("fchown", path,
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121 box->file_create_gid,
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122 box->file_create_gid_origin));
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123 } else {
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124 mail_storage_set_critical(box->storage,
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125 "fchown(%s, -1, %ld) failed: %m",
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126 path, (long)box->file_create_gid);
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127 }
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128 /* continue anyway */
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129 }
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130 return fd;
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131 }
11764
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132
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133 int sdbox_file_move(struct dbox_file *file, bool alt_path)
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134 {
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135 struct mail_storage *storage = &file->storage->storage;
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136 struct ostream *output;
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137 const char *dest_dir, *temp_path, *dest_path, *p;
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138 struct stat st;
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139 bool deleted;
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140 int out_fd, ret = 0;
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141
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142 i_assert(file->input != NULL);
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143
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144 if (dbox_file_is_in_alt(file) == alt_path)
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145 return 0;
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146
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147 if (stat(file->cur_path, &st) < 0 && errno == ENOENT) {
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148 /* already expunged/moved by another session */
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149 return 0;
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150 }
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151
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152 dest_path = !alt_path ? file->primary_path : file->alt_path;
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153 p = strrchr(dest_path, '/');
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154 i_assert(p != NULL);
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155 dest_dir = t_strdup_until(dest_path, p);
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156 temp_path = t_strdup_printf("%s/%s", dest_dir,
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157 dbox_generate_tmp_filename());
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158
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159 /* first copy the file. make sure to catch every possible error
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160 since we really don't want to break the file. */
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161 out_fd = file->storage->v.file_create_fd(file, temp_path, TRUE);
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162 if (out_fd == -1)
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163 return -1;
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164
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165 output = o_stream_create_fd_file(out_fd, 0, FALSE);
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166 i_stream_seek(file->input, 0);
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167 while ((ret = o_stream_send_istream(output, file->input)) > 0) ;
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168 if (ret == 0)
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169 ret = o_stream_flush(output);
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170 if (output->stream_errno != 0) {
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171 errno = output->stream_errno;
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172 mail_storage_set_critical(storage, "write(%s) failed: %m",
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173 temp_path);
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174 ret = -1;
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175 } else if (file->input->stream_errno != 0) {
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176 errno = file->input->stream_errno;
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177 dbox_file_set_syscall_error(file, "ftruncate()");
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178 ret = -1;
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179 } else if (ret < 0) {
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180 mail_storage_set_critical(storage,
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181 "o_stream_send_istream(%s, %s) "
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182 "failed with unknown error",
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diff changeset
183 temp_path, file->cur_path);
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184 }
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185 o_stream_unref(&output);
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186
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diff changeset
187 if (storage->set->parsed_fsync_mode != FSYNC_MODE_NEVER && ret == 0) {
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diff changeset
188 if (fsync(out_fd) < 0) {
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189 mail_storage_set_critical(storage,
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190 "fsync(%s) failed: %m", temp_path);
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diff changeset
191 ret = -1;
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192 }
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193 }
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diff changeset
194 if (close(out_fd) < 0) {
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diff changeset
195 mail_storage_set_critical(storage,
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diff changeset
196 "close(%s) failed: %m", temp_path);
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diff changeset
197 ret = -1;
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198 }
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diff changeset
199 if (ret < 0) {
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diff changeset
200 (void)unlink(temp_path);
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diff changeset
201 return -1;
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diff changeset
202 }
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diff changeset
203
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diff changeset
204 /* the temp file was successfully written. rename it now to the
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diff changeset
205 destination file. the destination shouldn't exist, but if it does
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diff changeset
206 its contents should be the same (except for maybe older metadata) */
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diff changeset
207 if (rename(temp_path, dest_path) < 0) {
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diff changeset
208 mail_storage_set_critical(storage,
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diff changeset
209 "rename(%s, %s) failed: %m", temp_path, dest_path);
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diff changeset
210 (void)unlink(temp_path);
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diff changeset
211 return -1;
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diff changeset
212 }
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diff changeset
213 if (storage->set->parsed_fsync_mode != FSYNC_MODE_NEVER) {
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
214 if (fdatasync_path(dest_dir) < 0) {
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diff changeset
215 mail_storage_set_critical(storage,
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diff changeset
216 "fdatasync(%s) failed: %m", dest_dir);
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diff changeset
217 (void)unlink(dest_path);
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diff changeset
218 return -1;
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diff changeset
219 }
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diff changeset
220 }
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
221 if (unlink(file->cur_path) < 0) {
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
222 dbox_file_set_syscall_error(file, "unlink()");
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Timo Sirainen <tss@iki.fi>
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diff changeset
223 if (errno == EACCES) {
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
224 /* configuration problem? revert the write */
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diff changeset
225 (void)unlink(dest_path);
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diff changeset
226 }
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
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diff changeset
227 /* who knows what happened to the file. keep both just to be
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
228 sure both won't get deleted. */
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
229 return -1;
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
230 }
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
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diff changeset
231
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
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diff changeset
232 /* file was successfully moved - reopen it */
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
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diff changeset
233 dbox_file_close(file);
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
234 if (dbox_file_open(file, &deleted) <= 0) {
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
235 mail_storage_set_critical(storage,
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
236 "dbox_file_move(%s): reopening file failed", dest_path);
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
237 return -1;
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
238 }
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
239 return 0;
8ec35eb6d7b3 dbox: dbox_file_move() was used by only single-dbox, so moved it there.
Timo Sirainen <tss@iki.fi>
parents: 10965
diff changeset
240 }