int mdbox_file_create_fd(struct dbox_file *file, const char *path, bool parents)
{
struct mdbox_file *mfile = (struct mdbox_file *)file;
struct mdbox_map *map = mfile->storage->map;
struct mailbox_permissions perm;
mode_t old_mask;
const char *p, *dir;
int fd;
mailbox_list_get_root_permissions(map->root_list, &perm);
old_mask = umask(0666 & ~perm.file_create_mode);
fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
umask(old_mask);
if (fd == -1 && errno == ENOENT && parents &&
(p = strrchr(path, '/')) != NULL) {
dir = t_strdup_until(path, p);
if (mailbox_list_mkdir_root(map->root_list, dir,
path != file->alt_path ?
MAILBOX_LIST_PATH_TYPE_DIR :
MAILBOX_LIST_PATH_TYPE_ALT_DIR) < 0) {
mail_storage_copy_list_error(&file->storage->storage,
map->root_list);
return -1;
}
/* try again */
old_mask = umask(0666 & ~perm.file_create_mode);
fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
umask(old_mask);
}
if (fd == -1) {
mail_storage_set_critical(&file->storage->storage,
"open(%s, O_CREAT) failed: %m", path);
} else if (perm.file_create_gid == (gid_t)-1) {
/* no group change */
} else if (fchown(fd, (uid_t)-1, perm.file_create_gid) < 0) {
if (errno == EPERM) {
mail_storage_set_critical(&file->storage->storage, "%s",
eperm_error_get_chgrp("fchown", path,
perm.file_create_gid,
perm.file_create_gid_origin));
} else {
mail_storage_set_critical(&file->storage->storage,
"fchown(%s, -1, %ld) failed: %m",
path, (long)perm.file_create_gid);
}
/* continue anyway */
}
return fd;
}
static int mailbox_list_index_index_open(struct mailbox_list *list)
{
struct mailbox_list_index *ilist = INDEX_LIST_CONTEXT(list);
const struct mail_storage_settings *set = list->mail_set;
struct mailbox_permissions perm;
enum mail_index_open_flags index_flags;
unsigned int lock_timeout;
if (ilist->opened)
return 0;
if (mailbox_list_mkdir_missing_index_root(list) < 0)
return -1;
index_flags = mail_storage_settings_to_index_flags(set);
if (strcmp(list->name, MAILBOX_LIST_NAME_INDEX) == 0) {
/* LAYOUT=index. this is the only location for the mailbox
data, so we must never move it into memory. */
index_flags |= MAIL_INDEX_OPEN_FLAG_NEVER_IN_MEMORY;
}
lock_timeout = set->mail_max_lock_timeout == 0 ? UINT_MAX :
set->mail_max_lock_timeout;
mailbox_list_get_root_permissions(list, &perm);
mail_index_set_permissions(ilist->index, perm.file_create_mode,
perm.file_create_gid,
perm.file_create_gid_origin);
mail_index_set_lock_method(ilist->index, set->parsed_lock_method,
lock_timeout);
if (mail_index_open_or_create(ilist->index, index_flags) < 0) {
if (mail_index_move_to_memory(ilist->index) < 0) {
/* try opening once more. it should be created
directly into memory now, except if it fails with
LAYOUT=index backend. */
if (mail_index_open_or_create(ilist->index,
index_flags) < 0) {
mailbox_list_set_internal_error(list);
return -1;
}
}
}
ilist->opened = TRUE;
return 0;
}
static void mailbox_uidvalidity_write(struct mailbox_list *list,
const char *path, uint32_t uid_validity)
{
char buf[8+1];
int fd;
struct mailbox_permissions perm;
mode_t old_mask;
mailbox_list_get_root_permissions(list, &perm);
old_mask = umask(0666 & ~perm.file_create_mode);
fd = open(path, O_RDWR | O_CREAT, 0666);
umask(old_mask);
if (fd == -1) {
i_error("open(%s) failed: %m", path);
return;
}
if (perm.file_create_gid != (gid_t)-1 &&
fchown(fd, (uid_t)-1, perm.file_create_gid) < 0) {
if (errno == EPERM) {
i_error("%s", eperm_error_get_chgrp("fchown", path,
perm.file_create_gid,
perm.file_create_gid_origin));
} else {
i_error("fchown(%s, -1, %ld) failed: %m",
path, (long)perm.file_create_gid);
}
}
if (i_snprintf(buf, sizeof(buf), "%08x", uid_validity) < 0)
i_unreached();
if (pwrite_full(fd, buf, strlen(buf), 0) < 0)
i_error("write(%s) failed: %m", path);
if (close(fd) < 0)
i_error("close(%s) failed: %m", path);
}
int subsfile_set_subscribed(struct mailbox_list *list, const char *path,
const char *temp_prefix, const char *name,
bool set)
{
const struct mail_storage_settings *mail_set = list->mail_set;
struct dotlock_settings dotlock_set;
struct dotlock *dotlock;
struct mailbox_permissions perm;
const char *line, *dir, *fname, *escaped_name;
struct istream *input = NULL;
struct ostream *output;
int fd_in, fd_out;
enum mailbox_list_path_type type;
bool found, changed = FALSE, failed = FALSE;
unsigned int version = 2;
if (strcasecmp(name, "INBOX") == 0)
name = "INBOX";
memset(&dotlock_set, 0, sizeof(dotlock_set));
dotlock_set.use_excl_lock = mail_set->dotlock_use_excl;
dotlock_set.nfs_flush = mail_set->mail_nfs_storage;
dotlock_set.temp_prefix = temp_prefix;
dotlock_set.timeout = SUBSCRIPTION_FILE_LOCK_TIMEOUT;
dotlock_set.stale_timeout = SUBSCRIPTION_FILE_CHANGE_TIMEOUT;
mailbox_list_get_root_permissions(list, &perm);
fd_out = file_dotlock_open_group(&dotlock_set, path, 0,
perm.file_create_mode,
perm.file_create_gid,
perm.file_create_gid_origin, &dotlock);
if (fd_out == -1 && errno == ENOENT) {
/* directory hasn't been created yet. */
type = list->set.control_dir != NULL ?
MAILBOX_LIST_PATH_TYPE_CONTROL :
MAILBOX_LIST_PATH_TYPE_DIR;
fname = strrchr(path, '/');
if (fname != NULL) {
dir = t_strdup_until(path, fname);
if (mailbox_list_mkdir_root(list, dir, type) < 0)
return -1;
}
fd_out = file_dotlock_open_group(&dotlock_set, path, 0,
perm.file_create_mode,
perm.file_create_gid,
perm.file_create_gid_origin,
&dotlock);
}
if (fd_out == -1) {
if (errno == EAGAIN) {
mailbox_list_set_error(list, MAIL_ERROR_TEMP,
"Timeout waiting for subscription file lock");
} else {
subswrite_set_syscall_error(list, "file_dotlock_open()",
path);
}
return -1;
}
fd_in = nfs_safe_open(path, O_RDONLY);
if (fd_in == -1 && errno != ENOENT) {
subswrite_set_syscall_error(list, "open()", path);
file_dotlock_delete(&dotlock);
return -1;
}
if (fd_in != -1) {
input = i_stream_create_fd_autoclose(&fd_in, list->mailbox_name_max_length+1);
i_stream_set_return_partial_line(input, TRUE);
subsfile_list_read_header(list, input, &version);
}
found = FALSE;
output = o_stream_create_fd_file(fd_out, 0, FALSE);
o_stream_cork(output);
if (version >= 2)
o_stream_send_str(output, version2_header);
if (version < 2 || name[0] == '\0')
escaped_name = name;
else {
const char *const *tmp;
char separators[2];
string_t *str = t_str_new(64);
separators[0] = mailbox_list_get_hierarchy_sep(list);
separators[1] = '\0';
tmp = t_strsplit(name, separators);
str_append_tabescaped(str, *tmp);
for (tmp++; *tmp != NULL; tmp++) {
str_append_c(str, '\t');
str_append_tabescaped(str, *tmp);
}
escaped_name = str_c(str);
}
if (input != NULL) {
while ((line = next_line(list, path, input,
&failed, FALSE)) != NULL) {
if (strcmp(line, escaped_name) == 0) {
found = TRUE;
if (!set) {
changed = TRUE;
continue;
}
}
o_stream_nsend_str(output, line);
o_stream_nsend(output, "\n", 1);
}
i_stream_destroy(&input);
}
if (!failed && set && !found) {
/* append subscription */
line = t_strconcat(escaped_name, "\n", NULL);
o_stream_nsend_str(output, line);
changed = TRUE;
}
if (changed && !failed) {
if (o_stream_nfinish(output) < 0) {
subswrite_set_syscall_error(list, "write()", path);
failed = TRUE;
} else if (mail_set->parsed_fsync_mode != FSYNC_MODE_NEVER) {
if (fsync(fd_out) < 0) {
subswrite_set_syscall_error(list, "fsync()",
path);
failed = TRUE;
}
}
} else {
o_stream_ignore_last_errors(output);
}
o_stream_destroy(&output);
if (failed || !changed) {
if (file_dotlock_delete(&dotlock) < 0) {
subswrite_set_syscall_error(list,
"file_dotlock_delete()", path);
failed = TRUE;
}
} else {
enum dotlock_replace_flags flags =
DOTLOCK_REPLACE_FLAG_VERIFY_OWNER;
if (file_dotlock_replace(&dotlock, flags) < 0) {
subswrite_set_syscall_error(list,
"file_dotlock_replace()", path);
failed = TRUE;
}
}
return failed ? -1 : (changed ? 1 : 0);
}
static int mdbox_map_open_internal(struct mdbox_map *map, bool create_missing)
{
enum mail_index_open_flags open_flags;
struct mailbox_permissions perm;
int ret = 0;
if (map->view != NULL) {
/* already opened */
return 1;
}
mailbox_list_get_root_permissions(map->root_list, &perm);
mail_index_set_permissions(map->index, perm.file_create_mode,
perm.file_create_gid,
perm.file_create_gid_origin);
open_flags = MAIL_INDEX_OPEN_FLAG_NEVER_IN_MEMORY |
mail_storage_settings_to_index_flags(MAP_STORAGE(map)->set);
if (create_missing) {
if ((ret = mdbox_map_mkdir_storage(map)) < 0)
return -1;
if (ret > 0) {
/* storage/ directory already existed.
the index should exist also. */
} else {
open_flags |= MAIL_INDEX_OPEN_FLAG_CREATE;
}
}
ret = mail_index_open(map->index, open_flags);
if (ret == 0 && create_missing) {
/* storage/ already existed, but indexes didn't. we'll need to
take extra steps to make sure we won't overwrite any m.*
files that may already exist. */
map->verify_existing_file_ids = TRUE;
open_flags |= MAIL_INDEX_OPEN_FLAG_CREATE;
ret = mail_index_open(map->index, open_flags);
}
if (ret < 0) {
mail_storage_set_internal_error(MAP_STORAGE(map));
mail_index_reset_error(map->index);
return -1;
}
if (ret == 0) {
/* index not found - for now just return failure */
i_assert(!create_missing);
return 0;
}
map->view = mail_index_view_open(map->index);
mdbox_map_cleanup(map);
if (mail_index_get_header(map->view)->uid_validity == 0) {
if (mdbox_map_generate_uid_validity(map) < 0 ||
mdbox_map_refresh(map) < 0) {
mail_storage_set_internal_error(MAP_STORAGE(map));
mail_index_reset_error(map->index);
mail_index_close(map->index);
return -1;
}
}
return 1;
}
