X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibelogind%2Fsd-bus%2Fbus-creds.c;h=3cb996171ec78d529a286e44edcd57a565fb69cc;hb=ec82d020534270d1979da2d0b27f84e1846b2851;hp=153b058593eef6f754e7b7280d07c1ba49514cc3;hpb=73feab10082362f460519d4c38379ca365f432df;p=elogind.git

diff --git a/src/libelogind/sd-bus/bus-creds.c b/src/libelogind/sd-bus/bus-creds.c
index 153b05859..3cb996171 100644
--- a/src/libelogind/sd-bus/bus-creds.c
+++ b/src/libelogind/sd-bus/bus-creds.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 /***
   This file is part of systemd.
 
@@ -19,22 +17,28 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <stdlib.h>
 #include <linux/capability.h>
+#include <stdlib.h>
 
-#include "util.h"
-#include "formats-util.h"
-#include "process-util.h"
-#include "terminal-util.h"
-#include "capability.h"
-#include "cgroup-util.h"
-#include "fileio.h"
-#include "audit.h"
+#include "alloc-util.h"
+#include "audit-util.h"
+#include "bus-creds.h"
+#include "bus-label.h"
 #include "bus-message.h"
 #include "bus-util.h"
+#include "capability-util.h"
+#include "cgroup-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "format-util.h"
+#include "hexdecoct.h"
+#include "parse-util.h"
+#include "process-util.h"
+#include "string-util.h"
 #include "strv.h"
-#include "bus-creds.h"
-#include "bus-label.h"
+#include "terminal-util.h"
+#include "user-util.h"
+#include "util.h"
 
 enum {
         CAP_OFFSET_INHERITABLE = 0,
@@ -69,7 +73,9 @@ void bus_creds_done(sd_bus_creds *c) {
 }
 
 _public_ sd_bus_creds *sd_bus_creds_ref(sd_bus_creds *c) {
-        assert_return(c, NULL);
+
+        if (!c)
+                return NULL;
 
         if (c->allocated) {
                 assert(c->n_ref > 0);
@@ -107,11 +113,9 @@ _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
                         free(c->cgroup_root);
                         free(c->description);
 
-                        free(c->supplementary_gids);
-                        c->supplementary_gids = NULL;
+                        c->supplementary_gids = mfree(c->supplementary_gids);
 
-                        strv_free(c->well_known_names);
-                        c->well_known_names = NULL;
+                        c->well_known_names = strv_free(c->well_known_names);
 
                         bus_creds_done(c);
 
@@ -128,11 +132,13 @@ _public_ sd_bus_creds *sd_bus_creds_unref(sd_bus_creds *c) {
         return NULL;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ uint64_t sd_bus_creds_get_mask(const sd_bus_creds *c) {
         assert_return(c, 0);
 
         return c->mask;
 }
+#endif // 0
 
 _public_ uint64_t sd_bus_creds_get_augmented_mask(const sd_bus_creds *c) {
         assert_return(c, 0);
@@ -152,6 +158,7 @@ sd_bus_creds* bus_creds_new(void) {
         return c;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t mask) {
         sd_bus_creds *c;
         int r;
@@ -183,6 +190,7 @@ _public_ int sd_bus_creds_new_from_pid(sd_bus_creds **ret, pid_t pid, uint64_t m
         *ret = c;
         return 0;
 }
+#endif // 0
 
 _public_ int sd_bus_creds_get_uid(sd_bus_creds *c, uid_t *uid) {
         assert_return(c, -EINVAL);
@@ -206,6 +214,7 @@ _public_ int sd_bus_creds_get_euid(sd_bus_creds *c, uid_t *euid) {
         return 0;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_get_suid(sd_bus_creds *c, uid_t *suid) {
         assert_return(c, -EINVAL);
         assert_return(suid, -EINVAL);
@@ -239,6 +248,7 @@ _public_ int sd_bus_creds_get_gid(sd_bus_creds *c, gid_t *gid) {
         *gid = c->gid;
         return 0;
 }
+#endif // 0
 
 _public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) {
         assert_return(c, -EINVAL);
@@ -251,6 +261,7 @@ _public_ int sd_bus_creds_get_egid(sd_bus_creds *c, gid_t *egid) {
         return 0;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_get_sgid(sd_bus_creds *c, gid_t *sgid) {
         assert_return(c, -EINVAL);
         assert_return(sgid, -EINVAL);
@@ -283,6 +294,7 @@ _public_ int sd_bus_creds_get_supplementary_gids(sd_bus_creds *c, const gid_t **
         *gids = c->supplementary_gids;
         return (int) c->n_supplementary_gids;
 }
+#endif // 0
 
 _public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) {
         assert_return(c, -EINVAL);
@@ -296,6 +308,7 @@ _public_ int sd_bus_creds_get_pid(sd_bus_creds *c, pid_t *pid) {
         return 0;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) {
         assert_return(c, -EINVAL);
         assert_return(ppid, -EINVAL);
@@ -312,6 +325,7 @@ _public_ int sd_bus_creds_get_ppid(sd_bus_creds *c, pid_t *ppid) {
         *ppid = c->ppid;
         return 0;
 }
+#endif // 0
 
 _public_ int sd_bus_creds_get_tid(sd_bus_creds *c, pid_t *tid) {
         assert_return(c, -EINVAL);
@@ -336,6 +350,7 @@ _public_ int sd_bus_creds_get_selinux_context(sd_bus_creds *c, const char **ret)
         return 0;
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_get_comm(sd_bus_creds *c, const char **ret) {
         assert_return(c, -EINVAL);
         assert_return(ret, -EINVAL);
@@ -387,6 +402,8 @@ _public_ int sd_bus_creds_get_cgroup(sd_bus_creds *c, const char **ret) {
 }
 
 _public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) {
+        int r;
+
         assert_return(c, -EINVAL);
         assert_return(ret, -EINVAL);
 
@@ -395,14 +412,25 @@ _public_ int sd_bus_creds_get_unit(sd_bus_creds *c, const char **ret) {
 
         assert(c->cgroup);
 
-        if (!c->unit)
-                return -ESRCH;
+        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);
 
@@ -411,14 +439,25 @@ _public_ int sd_bus_creds_get_user_unit(sd_bus_creds *c, const char **ret) {
 
         assert(c->cgroup);
 
-        if (!c->user_unit)
-                return -ESRCH;
+        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);
 
@@ -427,8 +466,17 @@ _public_ int sd_bus_creds_get_slice(sd_bus_creds *c, const char **ret) {
 
         assert(c->cgroup);
 
-        if (!c->slice)
-                return -ESRCH;
+        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;
@@ -460,6 +508,7 @@ _public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) {
         *ret = c->user_slice;
         return 0;
 }
+#endif // 0
 
 _public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) {
         int r;
@@ -475,10 +524,13 @@ _public_ int sd_bus_creds_get_session(sd_bus_creds *c, const char **ret) {
         if (!c->session) {
                 const char *shifted;
 
+                log_debug_elogind("Shifting cgroup \"%s\", root \"%s\"",
+                                  c->cgroup, c->cgroup_root ? c->cgroup_root : "NULL");
                 r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
                 if (r < 0)
                         return r;
 
+                log_debug_elogind("Shifted: \"%s\"", shifted);
                 r = cg_path_get_session(shifted, (char**) &c->session);
                 if (r < 0)
                         return r;
@@ -504,7 +556,12 @@ _public_ int sd_bus_creds_get_owner_uid(sd_bus_creds *c, uid_t *uid) {
         if (r < 0)
                 return r;
 
-        return -ESRCH;
+#if 0 /// elogind does not support systemd slices
+        return cg_path_get_owner_uid(shifted, uid);
+#else
+        *uid = c->uid;
+        return 0;
+#endif // 0
 }
 
 _public_ int sd_bus_creds_get_cmdline(sd_bus_creds *c, char ***cmdline) {
@@ -568,6 +625,7 @@ _public_ int sd_bus_creds_get_tty(sd_bus_creds *c, const char **ret) {
         return 0;
 }
 
+#if 0 /// UNNEEDED by elogind
 _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);
@@ -630,6 +688,7 @@ _public_ int sd_bus_creds_get_description(sd_bus_creds *c, const char **ret) {
         *ret = c->unescaped_description;
         return 0;
 }
+#endif // 0
 
 static int has_cap(sd_bus_creds *c, unsigned offset, int capability) {
         size_t sz;
@@ -656,6 +715,7 @@ _public_ int sd_bus_creds_has_effective_cap(sd_bus_creds *c, int capability) {
         return has_cap(c, CAP_OFFSET_EFFECTIVE, capability);
 }
 
+#if 0 /// UNNEEDED by elogind
 _public_ int sd_bus_creds_has_permitted_cap(sd_bus_creds *c, int capability) {
         assert_return(c, -EINVAL);
         assert_return(capability >= 0, -EINVAL);
@@ -685,6 +745,7 @@ _public_ int sd_bus_creds_has_bounding_cap(sd_bus_creds *c, int capability) {
 
         return has_cap(c, CAP_OFFSET_BOUNDING, capability);
 }
+#endif // 0
 
 static int parse_caps(sd_bus_creds *c, unsigned offset, const char *p) {
         size_t sz, max;
@@ -982,10 +1043,8 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
                         if (r != -EPERM && r != -EACCES)
                                 return r;
                 } else {
-                        if (c->cmdline_size == 0) {
-                                free(c->cmdline);
-                                c->cmdline = NULL;
-                        }
+                        if (c->cmdline_size == 0)
+                                c->cmdline = mfree(c->cmdline);
 
                         c->mask |= SD_BUS_CREDS_CMDLINE;
                 }
@@ -1029,8 +1088,8 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
 
         if (missing & SD_BUS_CREDS_AUDIT_SESSION_ID) {
                 r = audit_session_from_pid(pid, &c->audit_session_id);
-                if (r == -ENXIO) {
-                        /* ENXIO means: no audit session id assigned */
+                if (r == -ENODATA) {
+                        /* ENODATA means: no audit session id assigned */
                         c->audit_session_id = AUDIT_SESSION_INVALID;
                         c->mask |= SD_BUS_CREDS_AUDIT_SESSION_ID;
                 } else if (r < 0) {
@@ -1042,8 +1101,8 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
 
         if (missing & SD_BUS_CREDS_AUDIT_LOGIN_UID) {
                 r = audit_loginuid_from_pid(pid, &c->audit_login_uid);
-                if (r == -ENXIO) {
-                        /* ENXIO means: no audit login uid assigned */
+                if (r == -ENODATA) {
+                        /* ENODATA means: no audit login uid assigned */
                         c->audit_login_uid = UID_INVALID;
                         c->mask |= SD_BUS_CREDS_AUDIT_LOGIN_UID;
                 } else if (r < 0) {
@@ -1083,7 +1142,7 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
 }
 
 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;
+        _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *n = NULL;
         int r;
 
         assert(c);