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Diffstat (limited to 'src/login/logind-acl.c')
-rw-r--r--src/login/logind-acl.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/src/login/logind-acl.c b/src/login/logind-acl.c
deleted file mode 100644
index 0cef88a82d..0000000000
--- a/src/login/logind-acl.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/***
- 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/>.
-***/
-
-#include <errno.h>
-#include <string.h>
-
-#include "acl-util.h"
-#include "alloc-util.h"
-#include "dirent-util.h"
-#include "escape.h"
-#include "fd-util.h"
-#include "formats-util.h"
-#include "logind-acl.h"
-#include "set.h"
-#include "string-util.h"
-#include "udev-util.h"
-#include "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) {
-
- _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
- struct udev_list_entry *item = NULL, *first = NULL;
- _cleanup_set_free_free_ Set *nodes = NULL;
- _cleanup_closedir_ DIR *dir = NULL;
- struct dirent *dent;
- Iterator i;
- char *n;
- int r;
-
- assert(udev);
-
- nodes = set_new(&string_hash_ops);
- if (!nodes)
- return -ENOMEM;
-
- e = udev_enumerate_new(udev);
- if (!e)
- return -ENOMEM;
-
- if (isempty(seat))
- seat = "seat0";
-
- /* 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)
- return r;
-
- r = udev_enumerate_add_match_is_initialized(e);
- if (r < 0)
- return r;
-
- r = udev_enumerate_scan_devices(e);
- if (r < 0)
- return r;
-
- first = udev_enumerate_get_list_entry(e);
- udev_list_entry_foreach(item, first) {
- _cleanup_udev_device_unref_ struct udev_device *d = NULL;
- const char *node, *sn;
-
- d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
- if (!d)
- return -ENOMEM;
-
- sn = udev_device_get_property_value(d, "ID_SEAT");
- if (isempty(sn))
- sn = "seat0";
-
- if (!streq(seat, sn))
- continue;
-
- node = udev_device_get_devnode(d);
- /* In case people mistag devices with nodes, we need to ignore this */
- if (!node)
- continue;
-
- n = strdup(node);
- if (!n)
- return -ENOMEM;
-
- log_debug("Found udev node %s for seat %s", n, seat);
- r = set_consume(nodes, n);
- if (r < 0)
- return r;
- }
-
- /* udev exports "dead" device nodes to allow module on-demand loading,
- * these devices are not known to the kernel at this moment */
- dir = opendir("/run/udev/static_node-tags/uaccess");
- if (dir) {
- FOREACH_DIRENT(dent, dir, return -errno) {
- _cleanup_free_ char *unescaped_devname = NULL;
-
- if (cunescape(dent->d_name, UNESCAPE_RELAX, &unescaped_devname) < 0)
- return -ENOMEM;
-
- n = strappend("/dev/", unescaped_devname);
- if (!n)
- return -ENOMEM;
-
- log_debug("Found static node %s for seat %s", n, seat);
- r = set_consume(nodes, n);
- if (r == -EEXIST)
- continue;
- if (r < 0)
- return r;
- }
- }
-
- r = 0;
- SET_FOREACH(n, nodes, i) {
- int k;
-
- log_debug("Changing ACLs at %s for seat %s (uid "UID_FMT"→"UID_FMT"%s%s)",
- n, seat, old_uid, new_uid,
- del ? " del" : "", add ? " add" : "");
-
- k = devnode_acl(n, flush, del, old_uid, add, new_uid);
- if (k == -ENOENT)
- log_debug("Device %s disappeared while setting ACLs", n);
- else if (k < 0 && r == 0)
- r = k;
- }
-
- return r;
-}
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