static int maildir_keywords_commit(struct maildir_keywords *mk)
{
const struct mailbox_permissions *perm;
struct dotlock *dotlock;
const char *lock_path;
mode_t old_mask;
int i, fd;
mk->synced = FALSE;
if (!mk->changed || mk->mbox == NULL)
return 0;
lock_path = t_strconcat(mk->path, ".lock", NULL);
i_unlink_if_exists(lock_path);
perm = mailbox_get_permissions(&mk->mbox->box);
for (i = 0;; i++) {
/* we could just create the temp file directly, but doing it
this ways avoids potential problems with overwriting
contents in malicious symlinks */
old_mask = umask(0777 & ~perm->file_create_mode);
fd = file_dotlock_open(&mk->dotlock_settings, mk->path,
DOTLOCK_CREATE_FLAG_NONBLOCK, &dotlock);
umask(old_mask);
if (fd != -1)
break;
if (errno != ENOENT || i == MAILDIR_DELETE_RETRY_COUNT) {
mail_storage_set_critical(mk->storage,
"file_dotlock_open(%s) failed: %m", mk->path);
return -1;
}
/* the control dir doesn't exist. create it unless the whole
mailbox was just deleted. */
if (!maildir_set_deleted(&mk->mbox->box))
return -1;
}
if (maildir_keywords_write_fd(mk, lock_path, fd) < 0) {
file_dotlock_delete(&dotlock);
return -1;
}
if (file_dotlock_replace(&dotlock, 0) < 0) {
mail_storage_set_critical(mk->storage,
"file_dotlock_replace(%s) failed: %m", mk->path);
return -1;
}
mk->changed = FALSE;
return 0;
}
static int
maildir_stat(struct maildir_mailbox *mbox, const char *path, struct stat *st_r)
{
struct mailbox *box = &mbox->box;
int i;
for (i = 0;; i++) {
if (nfs_safe_stat(path, st_r) == 0)
return 0;
if (errno != ENOENT || i == MAILDIR_DELETE_RETRY_COUNT)
break;
if (!maildir_set_deleted(box))
return -1;
/* try again */
}
mail_storage_set_critical(box->storage, "stat(%s) failed: %m", path);
return -1;
}
