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/***
This file is part of systemd.
Copyright 2013 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/>.
***/
#if HAVE_VALGRIND_MEMCHECK_H
#include <valgrind/memcheck.h>
#endif
#include <fcntl.h>
#include <malloc.h>
#include <sys/mman.h>
#include <sys/prctl.h>
/* When we include libgen.h because we need dirname() we immediately
* undefine basename() since libgen.h defines it as a macro to the POSIX
* version which is really broken. We prefer GNU basename(). */
#include <libgen.h>
#undef basename
#include "alloc-util.h"
#include "bus-internal.h"
#include "bus-kernel.h"
#include "bus-label.h"
#include "bus-message.h"
#include "bus-util.h"
#include "capability-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "format-util.h"
#include "memfd-util.h"
#include "parse-util.h"
#include "stdio-util.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"
#include "util.h"
void close_and_munmap(int fd, void *address, size_t size) {
if (size > 0)
assert_se(munmap(address, PAGE_ALIGN(size)) >= 0);
safe_close(fd);
}
void bus_flush_memfd(sd_bus *b) {
unsigned i;
assert(b);
for (i = 0; i < b->n_memfd_cache; i++)
close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped);
}
uint64_t attach_flags_to_kdbus(uint64_t mask) {
uint64_t m = 0;
if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID))
m |= KDBUS_ATTACH_CREDS;
if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID))
m |= KDBUS_ATTACH_PIDS;
if (mask & SD_BUS_CREDS_COMM)
m |= KDBUS_ATTACH_PID_COMM;
if (mask & SD_BUS_CREDS_TID_COMM)
m |= KDBUS_ATTACH_TID_COMM;
if (mask & SD_BUS_CREDS_EXE)
m |= KDBUS_ATTACH_EXE;
if (mask & SD_BUS_CREDS_CMDLINE)
m |= KDBUS_ATTACH_CMDLINE;
if (mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID))
m |= KDBUS_ATTACH_CGROUP;
if (mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS))
m |= KDBUS_ATTACH_CAPS;
if (mask & SD_BUS_CREDS_SELINUX_CONTEXT)
m |= KDBUS_ATTACH_SECLABEL;
if (mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))
m |= KDBUS_ATTACH_AUDIT;
if (mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)
m |= KDBUS_ATTACH_NAMES;
if (mask & SD_BUS_CREDS_DESCRIPTION)
m |= KDBUS_ATTACH_CONN_DESCRIPTION;
if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS)
m |= KDBUS_ATTACH_AUXGROUPS;
return m;
}
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