1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include <linux/capability.h>
26 #include "formats-util.h"
27 #include "process-util.h"
28 #include "terminal-util.h"
29 #include "capability.h"
30 #include "cgroup-util.h"
33 #include "bus-message.h"
36 #include "bus-creds.h"
37 #include "bus-label.h"
40 CAP_OFFSET_INHERITABLE = 0,
41 CAP_OFFSET_PERMITTED = 1,
42 CAP_OFFSET_EFFECTIVE = 2,
43 CAP_OFFSET_BOUNDING = 3
46 void bus_creds_done(sd_bus_creds *c) {
49 /* For internal bus cred structures that are allocated by
57 free(c->unescaped_description);
58 free(c->supplementary_gids);
61 free(c->well_known_names); /* note that this is an strv, but
62 * we only free the array, not the
63 * strings the array points to. The
64 * full strv we only free if
65 * c->allocated is set, see
68 strv_free(c->cmdline_array);
71 _public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) {
72 assert_return(c, NULL);
80 /* If this is an embedded creds structure, then
81 * forward ref counting to the message */
82 m = container_of(c, sd_bus_message, creds);
83 sd_bus_message_ref(m);
89 _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
106 free(c->unique_name);
107 free(c->cgroup_root);
108 free(c->description);
110 free(c->supplementary_gids);
111 c->supplementary_gids = NULL;
113 strv_free(c->well_known_names);
114 c->well_known_names = NULL;
123 m = container_of(c, sd_bus_message, creds);
124 sd_bus_message_unref(m);
131 /// UNNEEDED by elogind
133 _public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) {
140 _public_ uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c) {
146 sd_bus_creds* bus_creds_new(void) {
149 c = new0(sd_bus_creds, 1);
158 /// UNNEEDED by elogind
160 _public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t mask) {
164 assert_return(pid >= 0, -EINVAL);
165 assert_return(mask <= _SD_BUS_CREDS_ALL, -EOPNOTSUPP);
166 assert_return(ret, -EINVAL);
175 r = bus_creds_add_more(c, mask | SD_BUS_CREDS_AUGMENT, pid, 0);
177 sd_bus_creds_unref(c);
181 /* Check if the process existed at all, in case we haven't
182 * figured that out already */
183 if (!pid_is_alive(pid)) {
184 sd_bus_creds_unref(c);
193 _public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) {
194 assert_return(c, -EINVAL);
195 assert_return(uid, -EINVAL);
197 if (!(c->mask & SD_BUS_CREDS_UID))
204 _public_ int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid) {
205 assert_return(c, -EINVAL);
206 assert_return(euid, -EINVAL);
208 if (!(c->mask & SD_BUS_CREDS_EUID))
215 /// UNNEEDED by elogind
217 _public_ int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid) {
218 assert_return(c, -EINVAL);
219 assert_return(suid, -EINVAL);
221 if (!(c->mask & SD_BUS_CREDS_SUID))
229 _public_ int sd_bus_creds_get_fsuid(sd_bus_creds *c, uid_t *fsuid) {
230 assert_return(c, -EINVAL);
231 assert_return(fsuid, -EINVAL);
233 if (!(c->mask & SD_BUS_CREDS_FSUID))
240 _public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) {
241 assert_return(c, -EINVAL);
242 assert_return(gid, -EINVAL);
244 if (!(c->mask & SD_BUS_CREDS_GID))
252 _public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) {
253 assert_return(c, -EINVAL);
254 assert_return(egid, -EINVAL);
256 if (!(c->mask & SD_BUS_CREDS_EGID))
263 /// UNNEEDED by elogind
265 _public_ int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid) {
266 assert_return(c, -EINVAL);
267 assert_return(sgid, -EINVAL);
269 if (!(c->mask & SD_BUS_CREDS_SGID))
276 _public_ int sd_bus_creds_get_fsgid(sd_bus_creds *c, gid_t *fsgid) {
277 assert_return(c, -EINVAL);
278 assert_return(fsgid, -EINVAL);
280 if (!(c->mask & SD_BUS_CREDS_FSGID))
287 _public_ int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **gids) {
288 assert_return(c, -EINVAL);
289 assert_return(gids, -EINVAL);
291 if (!(c->mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS))
294 *gids = c->supplementary_gids;
295 return (int) c->n_supplementary_gids;
299 _public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) {
300 assert_return(c, -EINVAL);
301 assert_return(pid, -EINVAL);
303 if (!(c->mask & SD_BUS_CREDS_PID))
311 /// UNNEEDED by elogind
313 _public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) {
314 assert_return(c, -EINVAL);
315 assert_return(ppid, -EINVAL);
317 if (!(c->mask & SD_BUS_CREDS_PPID))
320 /* PID 1 has no parent process. Let's distinguish the case of
321 * not knowing and not having a parent process by the returned
331 _public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) {
332 assert_return(c, -EINVAL);
333 assert_return(tid, -EINVAL);
335 if (!(c->mask & SD_BUS_CREDS_TID))
343 _public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret) {
344 assert_return(c, -EINVAL);
346 if (!(c->mask & SD_BUS_CREDS_SELINUX_CONTEXT))
354 /// UNNEEDED by elogind
356 _public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) {
357 assert_return(c, -EINVAL);
358 assert_return(ret, -EINVAL);
360 if (!(c->mask & SD_BUS_CREDS_COMM))
368 _public_ int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret) {
369 assert_return(c, -EINVAL);
370 assert_return(ret, -EINVAL);
372 if (!(c->mask & SD_BUS_CREDS_TID_COMM))
380 _public_ int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret) {
381 assert_return(c, -EINVAL);
382 assert_return(ret, -EINVAL);
384 if (!(c->mask & SD_BUS_CREDS_EXE))
394 _public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) {
395 assert_return(c, -EINVAL);
396 assert_return(ret, -EINVAL);
398 if (!(c->mask & SD_BUS_CREDS_CGROUP))
406 _public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) {
409 assert_return(c, -EINVAL);
410 assert_return(ret, -EINVAL);
412 if (!(c->mask & SD_BUS_CREDS_UNIT))
420 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
424 r = cg_path_get_unit(shifted, (char**) &c->unit);
433 _public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) {
436 assert_return(c, -EINVAL);
437 assert_return(ret, -EINVAL);
439 if (!(c->mask & SD_BUS_CREDS_USER_UNIT))
447 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
451 r = cg_path_get_user_unit(shifted, (char**) &c->user_unit);
460 _public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) {
463 assert_return(c, -EINVAL);
464 assert_return(ret, -EINVAL);
466 if (!(c->mask & SD_BUS_CREDS_SLICE))
474 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
478 r = cg_path_get_slice(shifted, (char**) &c->slice);
487 _public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) {
490 assert_return(c, -EINVAL);
491 assert_return(ret, -EINVAL);
493 if (!(c->mask & SD_BUS_CREDS_USER_SLICE))
498 if (!c->user_slice) {
501 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
505 r = cg_path_get_user_slice(shifted, (char**) &c->user_slice);
510 *ret = c->user_slice;
515 _public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) {
518 assert_return(c, -EINVAL);
519 assert_return(ret, -EINVAL);
521 if (!(c->mask & SD_BUS_CREDS_SESSION))
529 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
533 r = cg_path_get_session(shifted, (char**) &c->session);
542 _public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) {
546 assert_return(c, -EINVAL);
547 assert_return(uid, -EINVAL);
549 if (!(c->mask & SD_BUS_CREDS_OWNER_UID))
554 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
558 return cg_path_get_owner_uid(shifted, uid);
561 _public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) {
562 assert_return(c, -EINVAL);
564 if (!(c->mask & SD_BUS_CREDS_CMDLINE))
570 if (!c->cmdline_array) {
571 c->cmdline_array = strv_parse_nulstr(c->cmdline, c->cmdline_size);
572 if (!c->cmdline_array)
576 *cmdline = c->cmdline_array;
580 /// UNNEEDED by elogind
582 _public_ int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid) {
583 assert_return(c, -EINVAL);
584 assert_return(sessionid, -EINVAL);
586 if (!(c->mask & SD_BUS_CREDS_AUDIT_SESSION_ID))
589 if (c->audit_session_id == AUDIT_SESSION_INVALID)
592 *sessionid = c->audit_session_id;
597 _public_ int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *uid) {
598 assert_return(c, -EINVAL);
599 assert_return(uid, -EINVAL);
601 if (!(c->mask & SD_BUS_CREDS_AUDIT_LOGIN_UID))
604 if (c->audit_login_uid == UID_INVALID)
607 *uid = c->audit_login_uid;
611 _public_ int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret) {
612 assert_return(c, -EINVAL);
613 assert_return(ret, -EINVAL);
615 if (!(c->mask & SD_BUS_CREDS_TTY))
625 /// UNNEEDED by elogind
627 _public_ int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **unique_name) {
628 assert_return(c, -EINVAL);
629 assert_return(unique_name, -EINVAL);
631 if (!(c->mask & SD_BUS_CREDS_UNIQUE_NAME))
634 *unique_name = c->unique_name;
638 _public_ int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***well_known_names) {
639 assert_return(c, -EINVAL);
640 assert_return(well_known_names, -EINVAL);
642 if (!(c->mask & SD_BUS_CREDS_WELL_KNOWN_NAMES))
645 /* As a special hack we return the bus driver as well-known
646 * names list when this is requested. */
647 if (c->well_known_names_driver) {
648 static const char* const wkn[] = {
649 "org.freedesktop.DBus",
653 *well_known_names = (char**) wkn;
657 if (c->well_known_names_local) {
658 static const char* const wkn[] = {
659 "org.freedesktop.DBus.Local",
663 *well_known_names = (char**) wkn;
667 *well_known_names = c->well_known_names;
671 _public_ int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret) {
672 assert_return(c, -EINVAL);
673 assert_return(ret, -EINVAL);
675 if (!(c->mask & SD_BUS_CREDS_DESCRIPTION))
678 assert(c->description);
680 if (!c->unescaped_description) {
681 c->unescaped_description = bus_label_unescape(c->description);
682 if (!c->unescaped_description)
686 *ret = c->unescaped_description;
691 static int has_cap(sd_bus_creds *c, unsigned offset, int capability) {
695 assert(capability >= 0);
696 assert(c->capability);
698 if ((unsigned) capability > cap_last_cap())
701 sz = DIV_ROUND_UP(cap_last_cap(), 32U);
703 return !!(c->capability[offset * sz + CAP_TO_INDEX(capability)] & CAP_TO_MASK(capability));
706 _public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) {
707 assert_return(c, -EINVAL);
708 assert_return(capability >= 0, -EINVAL);
710 if (!(c->mask & SD_BUS_CREDS_EFFECTIVE_CAPS))
713 return has_cap(c, CAP_OFFSET_EFFECTIVE, capability);
716 /// UNNEEDED by elogind
718 _public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) {
719 assert_return(c, -EINVAL);
720 assert_return(capability >= 0, -EINVAL);
722 if (!(c->mask & SD_BUS_CREDS_PERMITTED_CAPS))
725 return has_cap(c, CAP_OFFSET_PERMITTED, capability);
728 _public_ int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability) {
729 assert_return(c, -EINVAL);
730 assert_return(capability >= 0, -EINVAL);
732 if (!(c->mask & SD_BUS_CREDS_INHERITABLE_CAPS))
735 return has_cap(c, CAP_OFFSET_INHERITABLE, capability);
738 _public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) {
739 assert_return(c, -EINVAL);
740 assert_return(capability >= 0, -EINVAL);
742 if (!(c->mask & SD_BUS_CREDS_BOUNDING_CAPS))
745 return has_cap(c, CAP_OFFSET_BOUNDING, capability);
749 static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) {
756 max = DIV_ROUND_UP(cap_last_cap(), 32U);
757 p += strspn(p, WHITESPACE);
767 if (!c->capability) {
768 c->capability = new0(uint32_t, max * 4);
773 for (i = 0; i < sz; i ++) {
776 for (j = 0; j < 8; ++j) {
786 c->capability[offset * max + (sz - i - 1)] = v;
792 int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
797 assert(c->allocated);
799 if (!(mask & SD_BUS_CREDS_AUGMENT))
802 /* Try to retrieve PID from creds if it wasn't passed to us */
805 c->mask |= SD_BUS_CREDS_PID;
806 } else if (c->mask & SD_BUS_CREDS_PID)
809 /* Without pid we cannot do much... */
812 /* Try to retrieve TID from creds if it wasn't passed to us */
813 if (tid <= 0 && (c->mask & SD_BUS_CREDS_TID))
816 /* Calculate what we shall and can add */
817 missing = mask & ~(c->mask|SD_BUS_CREDS_PID|SD_BUS_CREDS_TID|SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_DESCRIPTION|SD_BUS_CREDS_AUGMENT);
823 c->mask |= SD_BUS_CREDS_TID;
826 if (missing & (SD_BUS_CREDS_PPID |
827 SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_SUID | SD_BUS_CREDS_FSUID |
828 SD_BUS_CREDS_GID | SD_BUS_CREDS_EGID | SD_BUS_CREDS_SGID | SD_BUS_CREDS_FSGID |
829 SD_BUS_CREDS_SUPPLEMENTARY_GIDS |
830 SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_INHERITABLE_CAPS |
831 SD_BUS_CREDS_PERMITTED_CAPS | SD_BUS_CREDS_BOUNDING_CAPS)) {
833 _cleanup_fclose_ FILE *f = NULL;
836 p = procfs_file_alloca(pid, "status");
842 else if (errno != EPERM && errno != EACCES)
847 FOREACH_LINE(line, f, return -errno) {
850 if (missing & SD_BUS_CREDS_PPID) {
851 p = startswith(line, "PPid:");
853 p += strspn(p, WHITESPACE);
855 /* Explicitly check for PPID 0 (which is the case for PID 1) */
856 if (!streq(p, "0")) {
857 r = parse_pid(p, &c->ppid);
864 c->mask |= SD_BUS_CREDS_PPID;
869 if (missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID)) {
870 p = startswith(line, "Uid:");
872 unsigned long uid, euid, suid, fsuid;
874 p += strspn(p, WHITESPACE);
875 if (sscanf(p, "%lu %lu %lu %lu", &uid, &euid, &suid, &fsuid) != 4)
878 if (missing & SD_BUS_CREDS_UID)
879 c->uid = (uid_t) uid;
880 if (missing & SD_BUS_CREDS_EUID)
881 c->euid = (uid_t) euid;
882 if (missing & SD_BUS_CREDS_SUID)
883 c->suid = (uid_t) suid;
884 if (missing & SD_BUS_CREDS_FSUID)
885 c->fsuid = (uid_t) fsuid;
887 c->mask |= missing & (SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_SUID|SD_BUS_CREDS_FSUID);
892 if (missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID)) {
893 p = startswith(line, "Gid:");
895 unsigned long gid, egid, sgid, fsgid;
897 p += strspn(p, WHITESPACE);
898 if (sscanf(p, "%lu %lu %lu %lu", &gid, &egid, &sgid, &fsgid) != 4)
901 if (missing & SD_BUS_CREDS_GID)
902 c->gid = (gid_t) gid;
903 if (missing & SD_BUS_CREDS_EGID)
904 c->egid = (gid_t) egid;
905 if (missing & SD_BUS_CREDS_SGID)
906 c->sgid = (gid_t) sgid;
907 if (missing & SD_BUS_CREDS_FSGID)
908 c->fsgid = (gid_t) fsgid;
910 c->mask |= missing & (SD_BUS_CREDS_GID|SD_BUS_CREDS_EGID|SD_BUS_CREDS_SGID|SD_BUS_CREDS_FSGID);
915 if (missing & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
916 p = startswith(line, "Groups:");
918 size_t allocated = 0;
924 p += strspn(p, WHITESPACE);
928 if (sscanf(p, "%lu%n", &g, &n) != 1)
931 if (!GREEDY_REALLOC(c->supplementary_gids, allocated, c->n_supplementary_gids+1))
934 c->supplementary_gids[c->n_supplementary_gids++] = (gid_t) g;
938 c->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
943 if (missing & SD_BUS_CREDS_EFFECTIVE_CAPS) {
944 p = startswith(line, "CapEff:");
946 r = parse_caps(c, CAP_OFFSET_EFFECTIVE, p);
950 c->mask |= SD_BUS_CREDS_EFFECTIVE_CAPS;
955 if (missing & SD_BUS_CREDS_PERMITTED_CAPS) {
956 p = startswith(line, "CapPrm:");
958 r = parse_caps(c, CAP_OFFSET_PERMITTED, p);
962 c->mask |= SD_BUS_CREDS_PERMITTED_CAPS;
967 if (missing & SD_BUS_CREDS_INHERITABLE_CAPS) {
968 p = startswith(line, "CapInh:");
970 r = parse_caps(c, CAP_OFFSET_INHERITABLE, p);
974 c->mask |= SD_BUS_CREDS_INHERITABLE_CAPS;
979 if (missing & SD_BUS_CREDS_BOUNDING_CAPS) {
980 p = startswith(line, "CapBnd:");
982 r = parse_caps(c, CAP_OFFSET_BOUNDING, p);
986 c->mask |= SD_BUS_CREDS_BOUNDING_CAPS;
994 if (missing & SD_BUS_CREDS_SELINUX_CONTEXT) {
997 p = procfs_file_alloca(pid, "attr/current");
998 r = read_one_line_file(p, &c->label);
1000 if (r != -ENOENT && r != -EINVAL && r != -EPERM && r != -EACCES)
1003 c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
1006 if (missing & SD_BUS_CREDS_COMM) {
1007 r = get_process_comm(pid, &c->comm);
1009 if (r != -EPERM && r != -EACCES)
1012 c->mask |= SD_BUS_CREDS_COMM;
1015 if (missing & SD_BUS_CREDS_EXE) {
1016 r = get_process_exe(pid, &c->exe);
1018 /* Unfortunately we cannot really distinguish
1019 * the case here where the process does not
1020 * exist, and /proc/$PID/exe being unreadable
1021 * because $PID is a kernel thread. Hence,
1022 * assume it is a kernel thread, and rely on
1023 * that this case is caught with a later
1026 c->mask |= SD_BUS_CREDS_EXE;
1028 if (r != -EPERM && r != -EACCES)
1031 c->mask |= SD_BUS_CREDS_EXE;
1034 if (missing & SD_BUS_CREDS_CMDLINE) {
1037 p = procfs_file_alloca(pid, "cmdline");
1038 r = read_full_file(p, &c->cmdline, &c->cmdline_size);
1042 if (r != -EPERM && r != -EACCES)
1045 if (c->cmdline_size == 0) {
1050 c->mask |= SD_BUS_CREDS_CMDLINE;
1054 if (tid > 0 && (missing & SD_BUS_CREDS_TID_COMM)) {
1055 _cleanup_free_ char *p = NULL;
1057 if (asprintf(&p, "/proc/"PID_FMT"/task/"PID_FMT"/comm", pid, tid) < 0)
1060 r = read_one_line_file(p, &c->tid_comm);
1064 if (r != -EPERM && r != -EACCES)
1067 c->mask |= SD_BUS_CREDS_TID_COMM;
1070 if (missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID)) {
1073 r = cg_pid_get_path(NULL, pid, &c->cgroup);
1075 if (r != -EPERM && r != -EACCES)
1080 if (!c->cgroup_root) {
1081 r = cg_get_root_path(&c->cgroup_root);
1087 c->mask |= missing & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_OWNER_UID);
1090 if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) {
1091 r = audit_session_from_pid(pid, &c->audit_session_id);
1093 /* ENXIO means: no audit session id assigned */
1094 c->audit_session_id = AUDIT_SESSION_INVALID;
1095 c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
1097 if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES)
1100 c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
1103 if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
1104 r = audit_loginuid_from_pid(pid, &c->audit_login_uid);
1106 /* ENXIO means: no audit login uid assigned */
1107 c->audit_login_uid = UID_INVALID;
1108 c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
1110 if (r != -EOPNOTSUPP && r != -ENOENT && r != -EPERM && r != -EACCES)
1113 c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
1116 if (missing & SD_BUS_CREDS_TTY) {
1117 r = get_ctty(pid, NULL, &c->tty);
1119 /* ENXIO means: process has no controlling TTY */
1121 c->mask |= SD_BUS_CREDS_TTY;
1123 if (r != -EPERM && r != -EACCES && r != -ENOENT)
1126 c->mask |= SD_BUS_CREDS_TTY;
1129 /* In case only the exe path was to be read we cannot
1130 * distinguish the case where the exe path was unreadable
1131 * because the process was a kernel thread, or when the
1132 * process didn't exist at all. Hence, let's do a final check,
1134 if (!pid_is_alive(pid))
1137 if (tid > 0 && tid != pid && !pid_is_unwaited(tid))
1140 c->augmented = missing & c->mask;
1145 int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret) {
1146 _cleanup_bus_creds_unref_ sd_bus_creds *n = NULL;
1152 if ((mask & ~c->mask) == 0 || (!(mask & SD_BUS_CREDS_AUGMENT))) {
1153 /* There's already all data we need, or augmentation
1154 * wasn't turned on. */
1156 *ret = sd_bus_creds_ref(c);
1160 n = bus_creds_new();
1164 /* Copy the original data over */
1166 if (c->mask & mask & SD_BUS_CREDS_PID) {
1168 n->mask |= SD_BUS_CREDS_PID;
1171 if (c->mask & mask & SD_BUS_CREDS_TID) {
1173 n->mask |= SD_BUS_CREDS_TID;
1176 if (c->mask & mask & SD_BUS_CREDS_PPID) {
1178 n->mask |= SD_BUS_CREDS_PPID;
1181 if (c->mask & mask & SD_BUS_CREDS_UID) {
1183 n->mask |= SD_BUS_CREDS_UID;
1186 if (c->mask & mask & SD_BUS_CREDS_EUID) {
1188 n->mask |= SD_BUS_CREDS_EUID;
1191 if (c->mask & mask & SD_BUS_CREDS_SUID) {
1193 n->mask |= SD_BUS_CREDS_SUID;
1196 if (c->mask & mask & SD_BUS_CREDS_FSUID) {
1197 n->fsuid = c->fsuid;
1198 n->mask |= SD_BUS_CREDS_FSUID;
1201 if (c->mask & mask & SD_BUS_CREDS_GID) {
1203 n->mask |= SD_BUS_CREDS_GID;
1206 if (c->mask & mask & SD_BUS_CREDS_EGID) {
1208 n->mask |= SD_BUS_CREDS_EGID;
1211 if (c->mask & mask & SD_BUS_CREDS_SGID) {
1213 n->mask |= SD_BUS_CREDS_SGID;
1216 if (c->mask & mask & SD_BUS_CREDS_FSGID) {
1217 n->fsgid = c->fsgid;
1218 n->mask |= SD_BUS_CREDS_FSGID;
1221 if (c->mask & mask & SD_BUS_CREDS_SUPPLEMENTARY_GIDS) {
1222 if (c->supplementary_gids) {
1223 n->supplementary_gids = newdup(gid_t, c->supplementary_gids, c->n_supplementary_gids);
1224 if (!n->supplementary_gids)
1226 n->n_supplementary_gids = c->n_supplementary_gids;
1228 n->supplementary_gids = NULL;
1229 n->n_supplementary_gids = 0;
1232 n->mask |= SD_BUS_CREDS_SUPPLEMENTARY_GIDS;
1235 if (c->mask & mask & SD_BUS_CREDS_COMM) {
1238 n->comm = strdup(c->comm);
1242 n->mask |= SD_BUS_CREDS_COMM;
1245 if (c->mask & mask & SD_BUS_CREDS_TID_COMM) {
1246 assert(c->tid_comm);
1248 n->tid_comm = strdup(c->tid_comm);
1252 n->mask |= SD_BUS_CREDS_TID_COMM;
1255 if (c->mask & mask & SD_BUS_CREDS_EXE) {
1257 n->exe = strdup(c->exe);
1263 n->mask |= SD_BUS_CREDS_EXE;
1266 if (c->mask & mask & SD_BUS_CREDS_CMDLINE) {
1268 n->cmdline = memdup(c->cmdline, c->cmdline_size);
1272 n->cmdline_size = c->cmdline_size;
1275 n->cmdline_size = 0;
1278 n->mask |= SD_BUS_CREDS_CMDLINE;
1281 if (c->mask & mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID)) {
1284 n->cgroup = strdup(c->cgroup);
1288 n->cgroup_root = strdup(c->cgroup_root);
1289 if (!n->cgroup_root)
1292 n->mask |= mask & (SD_BUS_CREDS_CGROUP|SD_BUS_CREDS_SESSION|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_USER_UNIT|SD_BUS_CREDS_SLICE|SD_BUS_CREDS_USER_SLICE|SD_BUS_CREDS_OWNER_UID);
1295 if (c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) {
1296 assert(c->capability);
1298 n->capability = memdup(c->capability, DIV_ROUND_UP(cap_last_cap(), 32U) * 4 * 4);
1302 n->mask |= c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS);
1305 if (c->mask & mask & SD_BUS_CREDS_SELINUX_CONTEXT) {
1308 n->label = strdup(c->label);
1311 n->mask |= SD_BUS_CREDS_SELINUX_CONTEXT;
1314 if (c->mask & mask & SD_BUS_CREDS_AUDIT_SESSION_ID) {
1315 n->audit_session_id = c->audit_session_id;
1316 n->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
1318 if (c->mask & mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
1319 n->audit_login_uid = c->audit_login_uid;
1320 n->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
1323 if (c->mask & mask & SD_BUS_CREDS_TTY) {
1325 n->tty = strdup(c->tty);
1330 n->mask |= SD_BUS_CREDS_TTY;
1333 if (c->mask & mask & SD_BUS_CREDS_UNIQUE_NAME) {
1334 assert(c->unique_name);
1336 n->unique_name = strdup(c->unique_name);
1337 if (!n->unique_name)
1339 n->mask |= SD_BUS_CREDS_UNIQUE_NAME;
1342 if (c->mask & mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) {
1343 if (strv_isempty(c->well_known_names))
1344 n->well_known_names = NULL;
1346 n->well_known_names = strv_copy(c->well_known_names);
1347 if (!n->well_known_names)
1350 n->well_known_names_driver = c->well_known_names_driver;
1351 n->well_known_names_local = c->well_known_names_local;
1352 n->mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES;
1355 if (c->mask & mask & SD_BUS_CREDS_DESCRIPTION) {
1356 assert(c->description);
1357 n->description = strdup(c->description);
1358 if (!n->description)
1360 n->mask |= SD_BUS_CREDS_DESCRIPTION;
1363 n->augmented = c->augmented & n->mask;
1367 r = bus_creds_add_more(n, mask, 0, 0);