diff options
Diffstat (limited to 'src/udev/logind-acl.c')
| -rw-r--r-- | src/udev/logind-acl.c | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/src/udev/logind-acl.c b/src/udev/logind-acl.c deleted file mode 100644 index a2b31a3b80..0000000000 --- a/src/udev/logind-acl.c +++ /dev/null @@ -1,252 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2011 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#ifdef HAVE_ACL - -#include <assert.h> -#include <sys/acl.h> -#include <acl/libacl.h> -#include <errno.h> -#include <string.h> - -#include "logind-acl.h" -#include "util.h" -#include "acl-util.h" - -static int flush_acl(acl_t acl) { - acl_entry_t i; - int found; - bool changed = false; - - assert(acl); - - for (found = acl_get_entry(acl, ACL_FIRST_ENTRY, &i); - found > 0; - found = acl_get_entry(acl, ACL_NEXT_ENTRY, &i)) { - - acl_tag_t tag; - - if (acl_get_tag_type(i, &tag) < 0) - return -errno; - - if (tag != ACL_USER) - continue; - - if (acl_delete_entry(acl, i) < 0) - return -errno; - - changed = true; - } - - if (found < 0) - return -errno; - - return changed; -} - -int devnode_acl(const char *path, - bool flush, - bool del, uid_t old_uid, - bool add, uid_t new_uid) { - - acl_t acl; - int r = 0; - bool changed = false; - - assert(path); - - acl = acl_get_file(path, ACL_TYPE_ACCESS); - if (!acl) - return -errno; - - if (flush) { - - r = flush_acl(acl); - if (r < 0) - goto finish; - if (r > 0) - changed = true; - - } else if (del && old_uid > 0) { - acl_entry_t entry; - - r = acl_find_uid(acl, old_uid, &entry); - if (r < 0) - goto finish; - - if (r > 0) { - if (acl_delete_entry(acl, entry) < 0) { - r = -errno; - goto finish; - } - - changed = true; - } - } - - if (add && new_uid > 0) { - acl_entry_t entry; - acl_permset_t permset; - int rd, wt; - - r = acl_find_uid(acl, new_uid, &entry); - if (r < 0) - goto finish; - - if (r == 0) { - if (acl_create_entry(&acl, &entry) < 0) { - r = -errno; - goto finish; - } - - if (acl_set_tag_type(entry, ACL_USER) < 0 || - acl_set_qualifier(entry, &new_uid) < 0) { - r = -errno; - goto finish; - } - } - - if (acl_get_permset(entry, &permset) < 0) { - r = -errno; - goto finish; - } - - rd = acl_get_perm(permset, ACL_READ); - if (rd < 0) { - r = -errno; - goto finish; - } - - wt = acl_get_perm(permset, ACL_WRITE); - if (wt < 0) { - r = -errno; - goto finish; - } - - if (!rd || !wt) { - - if (acl_add_perm(permset, ACL_READ|ACL_WRITE) < 0) { - r = -errno; - goto finish; - } - - changed = true; - } - } - - if (!changed) - goto finish; - - if (acl_calc_mask(&acl) < 0) { - r = -errno; - goto finish; - } - - if (acl_set_file(path, ACL_TYPE_ACCESS, acl) < 0) { - r = -errno; - goto finish; - } - - r = 0; - -finish: - acl_free(acl); - - return r; -} - -int devnode_acl_all(struct udev *udev, - const char *seat, - bool flush, - bool del, uid_t old_uid, - bool add, uid_t new_uid) { - - struct udev_list_entry *item = NULL, *first = NULL; - struct udev_enumerate *e; - int r; - - assert(udev); - - if (isempty(seat)) - seat = "seat0"; - - e = udev_enumerate_new(udev); - if (!e) - return -ENOMEM; - - /* We can only match by one tag in libudev. We choose - * "uaccess" for that. If we could match for two tags here we - * could add the seat name as second match tag, but this would - * be hardly optimizable in libudev, and hence checking the - * second tag manually in our loop is a good solution. */ - - r = udev_enumerate_add_match_tag(e, "uaccess"); - if (r < 0) - goto finish; - - r = udev_enumerate_scan_devices(e); - if (r < 0) - goto finish; - - first = udev_enumerate_get_list_entry(e); - udev_list_entry_foreach(item, first) { - struct udev_device *d; - const char *node, *sn; - - d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); - if (!d) { - r = -ENOMEM; - goto finish; - } - - sn = udev_device_get_property_value(d, "ID_SEAT"); - if (isempty(sn)) - sn = "seat0"; - - if (!streq(seat, sn)) { - udev_device_unref(d); - continue; - } - - node = udev_device_get_devnode(d); - if (!node) { - /* In case people mistag devices with nodes, we need to ignore this */ - udev_device_unref(d); - continue; - } - - log_debug("Fixing up %s for seat %s...", node, sn); - - r = devnode_acl(node, flush, del, old_uid, add, new_uid); - udev_device_unref(d); - - if (r < 0) - goto finish; - } - -finish: - if (e) - udev_enumerate_unref(e); - - return r; -} - -#endif |