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authorDimitri John Ledkov <dimitri.j.ledkov@intel.com>2015-06-01 12:46:52 +0100
committerDimitri John Ledkov <dimitri.j.ledkov@intel.com>2015-06-02 11:25:52 +0100
commit185a08745957cbd32e8293daf8c51ab9c995a71e (patch)
tree182b8fe7d51a34fbbc34870f1312c7f2eb136784
parent80979f1ce4dadf797a42e85a97dc10960c1f6509 (diff)
shared: Drop 'name=' prefix from SYSTEMD_CGROUP_CONTROLLER define.
In cgtop,mount-setup,nspawn the name= prefix is hard-coded in the mount options, and the define is not used. Everywhere else, we explicitly white-list allow 'name=' prefix to be used with all controllers, and strip it out to 'normalise' the controller name. That work is mostly inflicted on us due to 'name=' prefix in the define. Dropping this prefix makes everything more sane overall.
-rw-r--r--src/shared/cgroup-util.c24
-rw-r--r--src/shared/cgroup-util.h2
-rw-r--r--src/shared/def.h2
-rw-r--r--src/test/test-cgroup-util.c20
4 files changed, 22 insertions, 26 deletions
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 9988e5c574..d83cdf7e5f 100644
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -441,9 +441,7 @@ static const char *normalize_controller(const char *controller) {
assert(controller);
- if (streq(controller, SYSTEMD_CGROUP_CONTROLLER))
- return "systemd";
- else if (startswith(controller, "name="))
+ if (startswith(controller, "name="))
return controller + 5;
else
return controller;
@@ -483,7 +481,7 @@ int cg_get_path(const char *controller, const char *path, const char *suffix, ch
assert(fs);
- if (controller && !cg_controller_is_valid(controller, true))
+ if (controller && !cg_controller_is_valid(controller))
return -EINVAL;
if (_unlikely_(!good)) {
@@ -526,7 +524,7 @@ int cg_get_path_and_check(const char *controller, const char *path, const char *
assert(fs);
- if (!cg_controller_is_valid(controller, true))
+ if (!cg_controller_is_valid(controller))
return -EINVAL;
/* Normalize the controller syntax */
@@ -742,7 +740,7 @@ int cg_pid_get_path(const char *controller, pid_t pid, char **path) {
assert(pid >= 0);
if (controller) {
- if (!cg_controller_is_valid(controller, true))
+ if (!cg_controller_is_valid(controller))
return -EINVAL;
controller = normalize_controller(controller);
@@ -971,7 +969,7 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
e = strchr(spec, ':');
if (!e) {
- if (!cg_controller_is_valid(spec, true))
+ if (!cg_controller_is_valid(spec))
return -EINVAL;
if (controller) {
@@ -994,7 +992,7 @@ int cg_split_spec(const char *spec, char **controller, char **path) {
t = strdup(normalize_controller(v));
if (!t)
return -ENOMEM;
- if (!cg_controller_is_valid(t, true)) {
+ if (!cg_controller_is_valid(t)) {
free(t);
return -EINVAL;
}
@@ -1610,17 +1608,15 @@ char *cg_unescape(const char *p) {
DIGITS LETTERS \
"_"
-bool cg_controller_is_valid(const char *p, bool allow_named) {
+bool cg_controller_is_valid(const char *p) {
const char *t, *s;
if (!p)
return false;
- if (allow_named) {
- s = startswith(p, "name=");
- if (s)
- p = s;
- }
+ s = startswith(p, "name=");
+ if (s)
+ p = s;
if (*p == 0 || *p == '_')
return false;
diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h
index cbf7201370..fd72e9e5c5 100644
--- a/src/shared/cgroup-util.h
+++ b/src/shared/cgroup-util.h
@@ -122,7 +122,7 @@ int cg_path_decode_unit(const char *cgroup, char **unit);
char *cg_escape(const char *p);
char *cg_unescape(const char *p) _pure_;
-bool cg_controller_is_valid(const char *p, bool allow_named);
+bool cg_controller_is_valid(const char *p);
int cg_slice_to_path(const char *unit, char **ret);
diff --git a/src/shared/def.h b/src/shared/def.h
index a3d9fcf388..011c7c667e 100644
--- a/src/shared/def.h
+++ b/src/shared/def.h
@@ -35,7 +35,7 @@
* the watchdog pings will keep the loop busy. */
#define DEFAULT_EXIT_USEC (30*USEC_PER_SEC)
-#define SYSTEMD_CGROUP_CONTROLLER "name=systemd"
+#define SYSTEMD_CGROUP_CONTROLLER "systemd"
#define SIGNALS_CRASH_HANDLER SIGSEGV,SIGILL,SIGFPE,SIGBUS,SIGQUIT,SIGABRT
#define SIGNALS_IGNORE SIGPIPE
diff --git a/src/test/test-cgroup-util.c b/src/test/test-cgroup-util.c
index 4a89f64518..ecc9d70bf4 100644
--- a/src/test/test-cgroup-util.c
+++ b/src/test/test-cgroup-util.c
@@ -244,16 +244,16 @@ static void test_escape(void) {
}
static void test_controller_is_valid(void) {
- assert_se(cg_controller_is_valid("foobar", false));
- assert_se(cg_controller_is_valid("foo_bar", false));
- assert_se(cg_controller_is_valid("name=foo", true));
- assert_se(!cg_controller_is_valid("", false));
- assert_se(!cg_controller_is_valid("name=", true));
- assert_se(!cg_controller_is_valid("=", false));
- assert_se(!cg_controller_is_valid("cpu,cpuacct", false));
- assert_se(!cg_controller_is_valid("_", false));
- assert_se(!cg_controller_is_valid("_foobar", false));
- assert_se(!cg_controller_is_valid("tatü", false));
+ assert_se(cg_controller_is_valid("foobar"));
+ assert_se(cg_controller_is_valid("foo_bar"));
+ assert_se(cg_controller_is_valid("name=foo"));
+ assert_se(!cg_controller_is_valid(""));
+ assert_se(!cg_controller_is_valid("name="));
+ assert_se(!cg_controller_is_valid("="));
+ assert_se(!cg_controller_is_valid("cpu,cpuacct"));
+ assert_se(!cg_controller_is_valid("_"));
+ assert_se(!cg_controller_is_valid("_foobar"));
+ assert_se(!cg_controller_is_valid("tatü"));
}
static void test_slice_to_path_one(const char *unit, const char *path, int error) {