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/*
* Copyright (C) 2015 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "user-support.h"
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "../libsnap-confine-private/string-utils.h"
#include "../libsnap-confine-private/utils.h"
void setup_user_data(void) {
const char *user_data = getenv("SNAP_USER_DATA");
if (user_data == NULL) return;
// Only support 'canonicalized' paths.
if (!sc_is_path_canonical(user_data)) {
die("user data directory must be an absolute canonical path");
}
debug("creating user data directory: %s", user_data);
if (sc_nonfatal_mkpath(user_data, 0755, -1, -1) < 0) {
if ((errno == EROFS || errno == EACCES) && !sc_startswith(user_data, "/home/") &&
!sc_startswith(user_data, "/root/")) {
// clear errno or it will be displayed in die()
errno = 0;
// XXX: may point to the right config option here?
die("Sorry, home directories outside of /home needs configuration.\n"
"See https://snapcraft.io/docs/home-outside-home for details.");
}
die("cannot create user data directory: %s", user_data);
};
}
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