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-rw-r--r--src/journal/journald-server.c11
-rw-r--r--src/journal/journald-server.h3
-rw-r--r--src/journal/sd-journal.c2
-rw-r--r--src/shared/cgroup-util.c42
-rw-r--r--src/shared/cgroup-util.h2
-rw-r--r--src/test/test-cgroup-util.c7
6 files changed, 37 insertions, 30 deletions
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index a4fa394bc7..0f67fb8d57 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -622,7 +622,7 @@ static void dispatch_message_real(
}
#endif
- r = cg_pid_get_path_shifted(ucred->pid, NULL, &c);
+ r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c);
if (r >= 0) {
char *session = NULL;
@@ -743,7 +743,7 @@ static void dispatch_message_real(
}
#endif
- r = cg_pid_get_path_shifted(object_pid, NULL, &c);
+ r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c);
if (r >= 0) {
x = strappenda("OBJECT_SYSTEMD_CGROUP=", c);
IOVEC_SET_STRING(iovec[n++], x);
@@ -878,7 +878,7 @@ void server_dispatch_message(
if (!ucred)
goto finish;
- r = cg_pid_get_path_shifted(ucred->pid, NULL, &path);
+ r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path);
if (r < 0)
goto finish;
@@ -1563,6 +1563,10 @@ int server_init(Server *s) {
if (!s->rate_limit)
return -ENOMEM;
+ r = cg_get_root_path(&s->cgroup_root);
+ if (r < 0)
+ return r;
+
server_cache_hostname(s);
server_cache_boot_id(s);
server_cache_machine_id(s);
@@ -1643,6 +1647,7 @@ void server_done(Server *s) {
free(s->buffer);
free(s->tty_path);
+ free(s->cgroup_root);
if (s->mmap)
mmap_cache_unref(s->mmap);
diff --git a/src/journal/journald-server.h b/src/journal/journald-server.h
index 86c4be4ba2..2a81061f26 100644
--- a/src/journal/journald-server.h
+++ b/src/journal/journald-server.h
@@ -136,6 +136,9 @@ typedef struct Server {
char machine_id_field[sizeof("_MACHINE_ID=") + 32];
char boot_id_field[sizeof("_BOOT_ID=") + 32];
char *hostname_field;
+
+ /* Cached cgroup root, so that we don't have to query that all the time */
+ char *cgroup_root;
} Server;
#define N_IOVEC_META_FIELDS 20
diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index dda9351daf..bb116df047 100644
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -1616,8 +1616,8 @@ static int add_current_paths(sd_journal *j) {
* treat them as fatal. */
HASHMAP_FOREACH(f, j->files, i) {
- int r;
_cleanup_free_ char *dir;
+ int r;
dir = dirname_malloc(f->path);
if (!dir)
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 88bc33e3d5..2c2ffc5898 100644
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -1082,42 +1082,42 @@ int cg_get_root_path(char **path) {
return 0;
}
-int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup) {
+int cg_pid_get_path_shifted(pid_t pid, const char *root, char **cgroup) {
_cleanup_free_ char *cg_root = NULL;
char *cg_process, *p;
int r;
- r = cg_get_root_path(&cg_root);
- if (r < 0)
- return r;
+ assert(pid >= 0);
+ assert(cgroup);
+
+ if (!root) {
+ /* If the root was specified let's use that, otherwise
+ * let's determine it from PID 1 */
+
+ r = cg_get_root_path(&cg_root);
+ if (r < 0)
+ return r;
+
+ root = cg_root;
+ }
r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &cg_process);
if (r < 0)
return r;
- p = path_startswith(cg_process, cg_root);
- if (p)
- p--;
- else
- p = cg_process;
+ p = path_startswith(cg_process, root);
+ if (p) {
+ char *c;
- if (cgroup) {
- char* c;
+ c = strdup(p - 1);
+ free(cg_process);
- c = strdup(p);
- if (!c) {
- free(cg_process);
+ if (!c)
return -ENOMEM;
- }
*cgroup = c;
- }
-
- if (root) {
- cg_process[p-cg_process] = 0;
- *root = cg_process;
} else
- free(cg_process);
+ *cgroup = cg_process;
return 0;
}
diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h
index b64457300a..3e6a3f6abe 100644
--- a/src/shared/cgroup-util.h
+++ b/src/shared/cgroup-util.h
@@ -103,7 +103,7 @@ int cg_path_get_user_unit(const char *path, char **unit);
int cg_path_get_machine_name(const char *path, char **machine);
int cg_path_get_slice(const char *path, char **slice);
-int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup);
+int cg_pid_get_path_shifted(pid_t pid, const char *cached_root, char **cgroup);
int cg_pid_get_session(pid_t pid, char **session);
int cg_pid_get_owner_uid(pid_t pid, uid_t *uid);
diff --git a/src/test/test-cgroup-util.c b/src/test/test-cgroup-util.c
index 4d802d483a..eae67395bc 100644
--- a/src/test/test-cgroup-util.c
+++ b/src/test/test-cgroup-util.c
@@ -140,7 +140,7 @@ static void test_proc(void) {
assert_se(d);
FOREACH_DIRENT(de, d, break) {
- _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *prefix = NULL, *slice = NULL;
+ _cleanup_free_ char *path = NULL, *path_shifted = NULL, *session = NULL, *unit = NULL, *user_unit = NULL, *machine = NULL, *slice = NULL;
pid_t pid;
uid_t uid = (uid_t) -1;
@@ -156,7 +156,7 @@ static void test_proc(void) {
continue;
cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &path);
- cg_pid_get_path_shifted(pid, &prefix, &path_shifted);
+ cg_pid_get_path_shifted(pid, NULL, &path_shifted);
cg_pid_get_owner_uid(pid, &uid);
cg_pid_get_session(pid, &session);
cg_pid_get_unit(pid, &unit);
@@ -164,10 +164,9 @@ static void test_proc(void) {
cg_pid_get_machine_name(pid, &machine);
cg_pid_get_slice(pid, &slice);
- printf("%lu\t%s\t%s\t%s\t%lu\t%s\t%s\t%s\t%s\t%s\n",
+ printf("%lu\t%s\t%s\t%lu\t%s\t%s\t%s\t%s\t%s\n",
(unsigned long) pid,
path,
- prefix,
path_shifted,
(unsigned long) uid,
session,
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 00:28:30 +0000