114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifdef HAVE_VALGRIND_MEMCHECK_H
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#include <valgrind/memcheck.h>
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#endif
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#include <fcntl.h>
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#include <malloc.h>
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#include <sys/mman.h>
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#include <sys/prctl.h>
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/* When we include libgen.h because we need dirname() we immediately
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* undefine basename() since libgen.h defines it as a macro to the POSIX
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* version which is really broken. We prefer GNU basename(). */
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#include <libgen.h>
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#undef basename
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#include "alloc-util.h"
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#include "bus-internal.h"
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#include "bus-kernel.h"
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#include "bus-label.h"
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#include "bus-message.h"
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#include "bus-util.h"
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#include "capability-util.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "format-util.h"
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#include "memfd-util.h"
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#include "parse-util.h"
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#include "stdio-util.h"
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#include "string-util.h"
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#include "strv.h"
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#include "user-util.h"
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#include "util.h"
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void close_and_munmap(int fd, void *address, size_t size) {
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if (size > 0)
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assert_se(munmap(address, PAGE_ALIGN(size)) >= 0);
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safe_close(fd);
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}
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void bus_flush_memfd(sd_bus *b) {
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unsigned i;
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assert(b);
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for (i = 0; i < b->n_memfd_cache; i++)
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close_and_munmap(b->memfd_cache[i].fd, b->memfd_cache[i].address, b->memfd_cache[i].mapped);
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}
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uint64_t attach_flags_to_kdbus(uint64_t mask) {
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uint64_t m = 0;
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if (mask & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID|
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SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID))
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m |= KDBUS_ATTACH_CREDS;
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if (mask & (SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_PPID))
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m |= KDBUS_ATTACH_PIDS;
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if (mask & SD_BUS_CREDS_COMM)
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m |= KDBUS_ATTACH_PID_COMM;
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if (mask & SD_BUS_CREDS_TID_COMM)
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m |= KDBUS_ATTACH_TID_COMM;
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if (mask & SD_BUS_CREDS_EXE)
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m |= KDBUS_ATTACH_EXE;
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if (mask & SD_BUS_CREDS_CMDLINE)
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m |= KDBUS_ATTACH_CMDLINE;
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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))
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m |= KDBUS_ATTACH_CGROUP;
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if (mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS))
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m |= KDBUS_ATTACH_CAPS;
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if (mask & SD_BUS_CREDS_SELINUX_CONTEXT)
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m |= KDBUS_ATTACH_SECLABEL;
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if (mask & (SD_BUS_CREDS_AUDIT_SESSION_ID|SD_BUS_CREDS_AUDIT_LOGIN_UID))
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m |= KDBUS_ATTACH_AUDIT;
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if (mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)
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m |= KDBUS_ATTACH_NAMES;
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if (mask & SD_BUS_CREDS_DESCRIPTION)
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m |= KDBUS_ATTACH_CONN_DESCRIPTION;
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if (mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS)
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m |= KDBUS_ATTACH_AUXGROUPS;
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return m;
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}
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