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cgroups: remove unused method and cleanup cgroup_exit()

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2020-02-25 13:36:51 +01:00
parent ecf79d49e7
commit c3f5890cfe
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GPG Key ID: 8EB056D53EECB12D
3 changed files with 4 additions and 62 deletions
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52
src/lxc/cgroups/cgfsng.c
View File

@ -1833,57 +1833,6 @@ on_error:
return retval;
}
static int recursive_count_nrtasks(char *dirname)
{
__do_free char *path = NULL;
__do_closedir DIR *dir = NULL;
struct dirent *direntp;
int count = 0, ret;
dir = opendir(dirname);
if (!dir)
return 0;
while ((direntp = readdir(dir))) {
struct stat mystat;
if (!strcmp(direntp->d_name, ".") ||
!strcmp(direntp->d_name, ".."))
continue;
path = must_make_path(dirname, direntp->d_name, NULL);
if (lstat(path, &mystat))
continue;
if (!S_ISDIR(mystat.st_mode))
continue;
count += recursive_count_nrtasks(path);
}
path = must_make_path(dirname, "cgroup.procs", NULL);
ret = lxc_count_file_lines(path);
if (ret != -1)
count += ret;
return count;
}
__cgfsng_ops static int cgfsng_nrtasks(struct cgroup_ops *ops)
{
__do_free char *path = NULL;
if (!ops)
return ret_set_errno(-1, ENOENT);
if (!ops->container_cgroup || !ops->hierarchies)
return ret_set_errno(-1, EINVAL);
path = must_make_path(ops->hierarchies[0]->container_full_path, NULL);
return recursive_count_nrtasks(path);
}
/* Only root needs to escape to the cgroup of its init. */
__cgfsng_ops static bool cgfsng_escape(const struct cgroup_ops *ops,
struct lxc_conf *conf)
@ -3279,7 +3228,6 @@ struct cgroup_ops *cgfsng_ops_init(struct lxc_conf *conf)
cgfsng_ops->attach = cgfsng_attach;
cgfsng_ops->chown = cgfsng_chown;
cgfsng_ops->mount = cgfsng_mount;
cgfsng_ops->nrtasks = cgfsng_nrtasks;
cgfsng_ops->devices_activate = cgfsng_devices_activate;
return move_ptr(cgfsng_ops);

13
src/lxc/cgroups/cgroup.c
View File

@ -53,13 +53,10 @@ struct cgroup_ops *cgroup_init(struct lxc_conf *conf)
void cgroup_exit(struct cgroup_ops *ops)
{
char **cur;
struct hierarchy **it;
if (!ops)
return;
for (cur = ops->cgroup_use; cur && *cur; cur++)
for (char **cur = ops->cgroup_use; cur && *cur; cur++)
free(*cur);
free(ops->cgroup_pattern);
@ -69,14 +66,12 @@ void cgroup_exit(struct cgroup_ops *ops)
if (ops->cgroup2_devices)
bpf_program_free(ops->cgroup2_devices);
for (it = ops->hierarchies; it && *it; it++) {
char **p;
for (p = (*it)->controllers; p && *p; p++)
for (struct hierarchy **it = ops->hierarchies; it && *it; it++) {
for (char **p = (*it)->controllers; p && *p; p++)
free(*p);
free((*it)->controllers);
for (p = (*it)->cgroup2_chown; p && *p; p++)
for (char **p = (*it)->cgroup2_chown; p && *p; p++)
free(*p);
free((*it)->cgroup2_chown);

1
src/lxc/cgroups/cgroup.h
View File

@ -161,7 +161,6 @@ struct cgroup_ops {
const char *lxcpath, pid_t pid);
bool (*mount)(struct cgroup_ops *ops, struct lxc_handler *handler,
const char *root, int type);
int (*nrtasks)(struct cgroup_ops *ops);
bool (*devices_activate)(struct cgroup_ops *ops,
struct lxc_handler *handler);
bool (*monitor_delegate_controllers)(struct cgroup_ops *ops);