diff options
Diffstat (limited to 'src/libsystemd/bus-creds.c')
| -rw-r--r-- | src/libsystemd/bus-creds.c | 904 |
1 files changed, 904 insertions, 0 deletions
diff --git a/src/libsystemd/bus-creds.c b/src/libsystemd/bus-creds.c new file mode 100644 index 0000000000..52e55fc5e1 --- /dev/null +++ b/src/libsystemd/bus-creds.c @@ -0,0 +1,904 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + 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/>. +***/ + +#include <stdlib.h> + +#include "util.h" +#include "cgroup-util.h" +#include "fileio.h" +#include "audit.h" +#include "bus-message.h" +#include "bus-util.h" +#include "time-util.h" +#include "strv.h" +#include "bus-creds.h" + +enum { + CAP_OFFSET_INHERITABLE = 0, + CAP_OFFSET_PERMITTED = 1, + CAP_OFFSET_EFFECTIVE = 2, + CAP_OFFSET_BOUNDING = 3 +}; + +void bus_creds_done(sd_bus_creds *c) { + assert(c); + + /* For internal bus cred structures that are allocated by + * something else */ + + free(c->session); + free(c->unit); + free(c->user_unit); + free(c->slice); + + strv_free(c->cmdline_array); + strv_free(c->well_known_names); +} + +_public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) { + assert_return(c, NULL); + + if (c->allocated) { + assert(c->n_ref > 0); + c->n_ref++; + } else { + sd_bus_message *m; + + /* If this is an embedded creds structure, then + * forward ref counting to the message */ + m = container_of(c, sd_bus_message, creds); + sd_bus_message_ref(m); + } + + return c; +} + +_public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) { + + if (!c) + return NULL; + + if (c->allocated) { + assert(c->n_ref > 0); + c->n_ref--; + + if (c->n_ref == 0) { + bus_creds_done(c); + + free(c->comm); + free(c->tid_comm); + free(c->exe); + free(c->cmdline); + free(c->cgroup); + free(c->capability); + free(c->label); + free(c->unique_name); + free(c->cgroup_root); + free(c); + } + } else { + sd_bus_message *m; + + m = container_of(c, sd_bus_message, creds); + sd_bus_message_unref(m); + } + + + return NULL; +} + +_public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) { + assert_return(c, 0); + + return c->mask; +} + +sd_bus_creds* bus_creds_new(void) { + sd_bus_creds *c; + + c = new0(sd_bus_creds, 1); + if (!c) + return NULL; + + c->allocated = true; + c->n_ref = 1; + return c; +} + +_public_ int sd_bus_creds_new_from_pid(pid_t pid, uint64_t mask, sd_bus_creds **ret) { + sd_bus_creds *c; + int r; + + assert_return(pid >= 0, -EINVAL); + assert_return(mask <= _SD_BUS_CREDS_ALL, -ENOTSUP); + assert_return(ret, -EINVAL); + + if (pid == 0) + pid = getpid(); + + c = bus_creds_new(); + if (!c) + return -ENOMEM; + + r = bus_creds_add_more(c, mask, pid, 0); + if (r < 0) { + sd_bus_creds_unref(c); + return r; + } + + /* Check if the process existed at all, in case we haven't + * figured that out already */ + if (kill(pid, 0) < 0 && errno == ESRCH) { + sd_bus_creds_unref(c); + return -ESRCH; + } + + *ret = c; + return 0; +} + +_public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) { + assert_return(c, -EINVAL); + assert_return(uid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_UID)) + return -ENODATA; + + *uid = c->uid; + return 0; +} + +_public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) { + assert_return(c, -EINVAL); + assert_return(gid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_UID)) + return -ENODATA; + + *gid = c->gid; + return 0; +} + +_public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) { + assert_return(c, -EINVAL); + assert_return(pid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_PID)) + return -ENODATA; + + assert(c->pid > 0); + *pid = c->pid; + return 0; +} + +_public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) { + assert_return(c, -EINVAL); + assert_return(tid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_TID)) + return -ENODATA; + + assert(c->tid > 0); + *tid = c->tid; + return 0; +} + +_public_ int sd_bus_creds_get_pid_starttime(sd_bus_creds *c, uint64_t *usec) { + assert_return(c, -EINVAL); + assert_return(usec, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_PID_STARTTIME)) + return -ENODATA; + + assert(c->pid_starttime > 0); + *usec = c->pid_starttime; + return 0; +} + +_public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret) { + assert_return(c, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_SELINUX_CONTEXT)) + return -ENODATA; + + assert(c->label); + *ret = c->label; + return 0; +} + +_public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) { + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_COMM)) + return -ENODATA; + + assert(c->comm); + *ret = c->comm; + return 0; +} + +_public_ int sd_bus_creds_get_tid_comm(sd_bus_creds *c, const char **ret) { + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_TID_COMM)) + return -ENODATA; + + assert(c->tid_comm); + *ret = c->tid_comm; + return 0; +} + +_public_ int sd_bus_creds_get_exe(sd_bus_creds *c, const char **ret) { + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_EXE)) + return -ENODATA; + + assert(c->exe); + *ret = c->exe; + return 0; +} + +_public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) { + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_CGROUP)) + return -ENODATA; + + assert(c->cgroup); + *ret = c->cgroup; + return 0; +} + +_public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) { + int r; + + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_UNIT)) + return -ENODATA; + + assert(c->cgroup); + + if (!c->unit) { + const char *shifted; + + r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); + if (r < 0) + return r; + + r = cg_path_get_unit(shifted, (char**) &c->unit); + if (r < 0) + return r; + } + + *ret = c->unit; + return 0; +} + +_public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) { + int r; + + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_USER_UNIT)) + return -ENODATA; + + assert(c->cgroup); + + if (!c->user_unit) { + const char *shifted; + + r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); + if (r < 0) + return r; + + r = cg_path_get_user_unit(shifted, (char**) &c->user_unit); + if (r < 0) + return r; + } + + *ret = c->user_unit; + return 0; +} + +_public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) { + int r; + + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_SLICE)) + return -ENODATA; + + assert(c->cgroup); + + if (!c->slice) { + const char *shifted; + + r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); + if (r < 0) + return r; + + r = cg_path_get_slice(shifted, (char**) &c->slice); + if (r < 0) + return r; + } + + *ret = c->slice; + return 0; +} + +_public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) { + int r; + + assert_return(c, -EINVAL); + assert_return(ret, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_SESSION)) + return -ENODATA; + + assert(c->cgroup); + + if (!c->session) { + const char *shifted; + + r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); + if (r < 0) + return r; + + r = cg_path_get_session(shifted, (char**) &c->session); + if (r < 0) + return r; + } + + *ret = c->session; + return 0; +} + +_public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) { + const char *shifted; + int r; + + assert_return(c, -EINVAL); + assert_return(uid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_OWNER_UID)) + return -ENODATA; + + assert(c->cgroup); + + r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted); + if (r < 0) + return r; + + return cg_path_get_owner_uid(shifted, uid); +} + +_public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) { + assert_return(c, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_CMDLINE)) + return -ENODATA; + + assert_return(c->cmdline, -ESRCH); + assert(c->cmdline); + + if (!c->cmdline_array) { + c->cmdline_array = strv_parse_nulstr(c->cmdline, c->cmdline_size); + if (!c->cmdline_array) + return -ENOMEM; + } + + *cmdline = c->cmdline_array; + return 0; +} + +_public_ int sd_bus_creds_get_audit_session_id(sd_bus_creds *c, uint32_t *sessionid) { + assert_return(c, -EINVAL); + assert_return(sessionid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_AUDIT_SESSION_ID)) + return -ENODATA; + + *sessionid = c->audit_session_id; + return 0; +} + +_public_ int sd_bus_creds_get_audit_login_uid(sd_bus_creds *c, uid_t *uid) { + assert_return(c, -EINVAL); + assert_return(uid, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_AUDIT_LOGIN_UID)) + return -ENODATA; + + *uid = c->audit_login_uid; + return 0; +} + +_public_ int sd_bus_creds_get_unique_name(sd_bus_creds *c, const char **unique_name) { + assert_return(c, -EINVAL); + assert_return(unique_name, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_UNIQUE_NAME)) + return -ENODATA; + + *unique_name = c->unique_name; + return 0; +} + +_public_ int sd_bus_creds_get_well_known_names(sd_bus_creds *c, char ***well_known_names) { + assert_return(c, -EINVAL); + assert_return(well_known_names, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_WELL_KNOWN_NAMES)) + return -ENODATA; + + *well_known_names = c->well_known_names; + return 0; +} + +static int has_cap(sd_bus_creds *c, unsigned offset, int capability) { + size_t sz; + + assert(c); + assert(c->capability); + + sz = c->capability_size / 4; + if ((size_t) capability >= sz*8) + return 0; + + return !!(c->capability[offset * sz + (capability / 8)] & (1 << (capability % 8))); +} + +_public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) { + assert_return(c, -EINVAL); + assert_return(capability >= 0, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_EFFECTIVE_CAPS)) + return -ENODATA; + + return has_cap(c, CAP_OFFSET_EFFECTIVE, capability); +} + +_public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) { + assert_return(c, -EINVAL); + assert_return(capability >= 0, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_PERMITTED_CAPS)) + return -ENODATA; + + return has_cap(c, CAP_OFFSET_PERMITTED, capability); +} + +_public_ int sd_bus_creds_has_inheritable_cap(sd_bus_creds *c, int capability) { + assert_return(c, -EINVAL); + assert_return(capability >= 0, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_INHERITABLE_CAPS)) + return -ENODATA; + + return has_cap(c, CAP_OFFSET_INHERITABLE, capability); +} + +_public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) { + assert_return(c, -EINVAL); + assert_return(capability >= 0, -EINVAL); + + if (!(c->mask & SD_BUS_CREDS_BOUNDING_CAPS)) + return -ENODATA; + + return has_cap(c, CAP_OFFSET_BOUNDING, capability); +} + +static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) { + size_t sz; + unsigned i; + + assert(c); + assert(p); + + p += strspn(p, WHITESPACE); + + sz = strlen(p); + if (sz % 2 != 0) + return -EINVAL; + + sz /= 2; + if (!c->capability) { + c->capability = new0(uint8_t, sz * 4); + if (!c->capability) + return -ENOMEM; + + c->capability_size = sz * 4; + } + + for (i = 0; i < sz; i ++) { + int x, y; + + x = unhexchar(p[i*2]); + y = unhexchar(p[i*2+1]); + + if (x < 0 || y < 0) + return -EINVAL; + + c->capability[offset * sz + (sz - i - 1)] = (uint8_t) x << 4 | (uint8_t) y; + } + + return 0; +} + +int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) { + uint64_t missing; + int r; + + assert(c); + assert(c->allocated); + + missing = mask & ~c->mask; + if (missing == 0) + return 0; + + /* Try to retrieve PID from creds if it wasn't passed to us */ + if (pid <= 0 && (c->mask & SD_BUS_CREDS_PID)) + pid = c->pid; + + if (tid <= 0 && (c->mask & SD_BUS_CREDS_TID)) + tid = c->pid; + + /* Without pid we cannot do much... */ + if (pid <= 0) + return 0; + + if (missing & (SD_BUS_CREDS_UID | SD_BUS_CREDS_GID | + SD_BUS_CREDS_EFFECTIVE_CAPS | SD_BUS_CREDS_INHERITABLE_CAPS | + SD_BUS_CREDS_PERMITTED_CAPS | SD_BUS_CREDS_BOUNDING_CAPS)) { + + _cleanup_fclose_ FILE *f = NULL; + char line[LINE_MAX]; + const char *p; + + p = procfs_file_alloca(pid, "status"); + + f = fopen(p, "re"); + if (!f) + return errno == ENOENT ? -ESRCH : -errno; + + FOREACH_LINE(line, f, return -errno) { + truncate_nl(line); + + if (missing & SD_BUS_CREDS_UID) { + p = startswith(line, "Uid:"); + if (p) { + unsigned long uid; + + p += strspn(p, WHITESPACE); + if (sscanf(p, "%lu", &uid) != 1) + return -EIO; + + c->uid = (uid_t) uid; + c->mask |= SD_BUS_CREDS_UID; + continue; + } + } + + if (missing & SD_BUS_CREDS_GID) { + p = startswith(line, "Gid:"); + if (p) { + unsigned long gid; + + p += strspn(p, WHITESPACE); + if (sscanf(p, "%lu", &gid) != 1) + return -EIO; + + c->gid = (uid_t) gid; + c->mask |= SD_BUS_CREDS_GID; + continue; + } + } + + if (missing & SD_BUS_CREDS_EFFECTIVE_CAPS) { + p = startswith(line, "CapEff:"); + if (p) { + r = parse_caps(c, CAP_OFFSET_EFFECTIVE, p); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_EFFECTIVE_CAPS; + continue; + } + } + + if (missing & SD_BUS_CREDS_PERMITTED_CAPS) { + p = startswith(line, "CapPrm:"); + if (p) { + r = parse_caps(c, CAP_OFFSET_PERMITTED, p); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_PERMITTED_CAPS; + continue; + } + } + + if (missing & SD_BUS_CREDS_INHERITABLE_CAPS) { + p = startswith(line, "CapInh:"); + if (p) { + r = parse_caps(c, CAP_OFFSET_INHERITABLE, p); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_INHERITABLE_CAPS; + continue; + } + } + + if (missing & SD_BUS_CREDS_BOUNDING_CAPS) { + p = startswith(line, "CapBnd:"); + if (p) { + r = parse_caps(c, CAP_OFFSET_BOUNDING, p); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_BOUNDING_CAPS; + continue; + } + } + } + } + + if (missing & (SD_BUS_CREDS_PID_STARTTIME)) { + unsigned long long st; + + r = get_starttime_of_pid(pid, &st); + if (r < 0) + return r; + + c->pid_starttime = ((usec_t) st * USEC_PER_SEC) / (usec_t) sysconf(_SC_CLK_TCK); + c->mask |= SD_BUS_CREDS_PID_STARTTIME; + } + + if (missing & SD_BUS_CREDS_SELINUX_CONTEXT) { + const char *p; + + p = procfs_file_alloca(pid, "attr/current"); + r = read_one_line_file(p, &c->label); + if (r < 0 && r != -ENOENT && r != -EINVAL) + return r; + else if (r >= 0) + c->mask |= SD_BUS_CREDS_SELINUX_CONTEXT; + } + + if (missing & SD_BUS_CREDS_COMM) { + r = get_process_comm(pid, &c->comm); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_COMM; + } + + if (missing & SD_BUS_CREDS_EXE) { + r = get_process_exe(pid, &c->exe); + if (r < 0) + return r; + + c->mask |= SD_BUS_CREDS_EXE; + } + + if (missing & SD_BUS_CREDS_CMDLINE) { + const char *p; + + p = procfs_file_alloca(pid, "cmdline"); + r = read_full_file(p, &c->cmdline, &c->cmdline_size); + if (r < 0) + return r; + + if (c->cmdline_size == 0) { + free(c->cmdline); + c->cmdline = NULL; + } else + c->mask |= SD_BUS_CREDS_CMDLINE; + } + + if (tid > 0 && (missing & SD_BUS_CREDS_TID_COMM)) { + _cleanup_free_ char *p = NULL; + + if (asprintf(&p, "/proc/%lu/task/%lu/comm", (unsigned long) pid, (unsigned long) tid) < 0) + return -ENOMEM; + + r = read_one_line_file(p, &c->tid_comm); + if (r < 0) + return r == -ENOENT ? -ESRCH : r; + + c->mask |= SD_BUS_CREDS_TID_COMM; + } + + if (missing & (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)) { + + r = cg_pid_get_path(NULL, pid, &c->cgroup); + if (r < 0) + return r; + + r = cg_get_root_path(&c->cgroup_root); + if (r < 0) + return r; + + c->mask |= missing & (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); + } + + if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) { + r = audit_session_from_pid(pid, &c->audit_session_id); + if (r < 0 && r != -ENOTSUP && r != -ENXIO && r != -ENOENT) + return r; + else if (r >= 0) + c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; + } + + if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) { + r = audit_loginuid_from_pid(pid, &c->audit_login_uid); + if (r < 0 && r != -ENOTSUP && r != -ENXIO && r != -ENOENT) + return r; + else if (r >= 0) + c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; + } + + return 0; +} + +int bus_creds_extend_by_pid(sd_bus_creds *c, uint64_t mask, sd_bus_creds **ret) { + _cleanup_bus_creds_unref_ sd_bus_creds *n = NULL; + int r; + + assert(c); + assert(ret); + + if ((mask & ~c->mask) == 0) { + /* There's already all data we need. */ + + *ret = sd_bus_creds_ref(c); + return 0; + } + + n = bus_creds_new(); + if (!n) + return -ENOMEM; + + /* Copy the original data over */ + + if (c->mask & mask & SD_BUS_CREDS_UID) { + n->uid = c->uid; + n->mask |= SD_BUS_CREDS_UID; + } + + if (c->mask & mask & SD_BUS_CREDS_GID) { + n->gid = c->gid; + n->mask |= SD_BUS_CREDS_GID; + } + + if (c->mask & mask & SD_BUS_CREDS_PID) { + n->pid = c->pid; + n->mask |= SD_BUS_CREDS_PID; + } + + if (c->mask & mask & SD_BUS_CREDS_TID) { + n->tid = c->tid; + n->mask |= SD_BUS_CREDS_TID; + } + + if (c->mask & mask & SD_BUS_CREDS_PID_STARTTIME) { + n->pid_starttime = c->pid_starttime; + n->mask |= SD_BUS_CREDS_PID_STARTTIME; + } + + if (c->mask & mask & SD_BUS_CREDS_COMM) { + n->comm = strdup(c->comm); + if (!n->comm) + return -ENOMEM; + + n->mask |= SD_BUS_CREDS_COMM; + } + + if (c->mask & mask & SD_BUS_CREDS_TID_COMM) { + n->tid_comm = strdup(c->tid_comm); + if (!n->tid_comm) + return -ENOMEM; + + n->mask |= SD_BUS_CREDS_TID_COMM; + } + + if (c->mask & mask & SD_BUS_CREDS_EXE) { + n->exe = strdup(c->exe); + if (!n->exe) + return -ENOMEM; + + n->mask |= SD_BUS_CREDS_EXE; + } + + if (c->mask & mask & SD_BUS_CREDS_CMDLINE) { + n->cmdline = memdup(c->cmdline, c->cmdline_size); + if (!n->cmdline) + return -ENOMEM; + + n->cmdline_size = c->cmdline_size; + n->mask |= SD_BUS_CREDS_CMDLINE; + } + + 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_OWNER_UID)) { + n->cgroup = strdup(c->cgroup); + if (!n->cgroup) + return -ENOMEM; + + n->cgroup_root = strdup(c->cgroup_root); + if (!n->cgroup_root) + return -ENOMEM; + + 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_OWNER_UID); + } + + if (c->mask & mask & (SD_BUS_CREDS_EFFECTIVE_CAPS|SD_BUS_CREDS_PERMITTED_CAPS|SD_BUS_CREDS_INHERITABLE_CAPS|SD_BUS_CREDS_BOUNDING_CAPS)) { + n->capability = memdup(c->capability, c->capability_size); + if (!n->capability) + return -ENOMEM; + + n->capability_size = c->capability_size; + 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); + } + + if (c->mask & mask & SD_BUS_CREDS_AUDIT_SESSION_ID) { + n->audit_session_id = c->audit_session_id; + n->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID; + } + + if (c->mask & mask & SD_BUS_CREDS_AUDIT_LOGIN_UID) { + n->audit_login_uid = c->audit_login_uid; + n->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID; + } + + if (c->mask & mask & SD_BUS_CREDS_UNIQUE_NAME) { + n->unique_name = strdup(c->unique_name); + if (!n->unique_name) + return -ENOMEM; + } + + if (c->mask & mask & SD_BUS_CREDS_WELL_KNOWN_NAMES) { + n->well_known_names = strv_copy(c->well_known_names); + if (!n->well_known_names) + return -ENOMEM; + } + + /* Get more data */ + + r = bus_creds_add_more(n, mask, + c->mask & SD_BUS_CREDS_PID ? c->pid : 0, + c->mask & SD_BUS_CREDS_TID ? c->tid : 0); + if (r < 0) + return r; + + *ret = n; + n = NULL; + return 0; +} |