libcgroup/Add-support-for-multiple-controllers-on-same-mount-point.patch

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From a20a50c1a133414f61d6cee0dc1b0cb66869bd95 Mon Sep 17 00:00:00 2001
From: lipengyu <lipengyu@kylinos.cn>
Date: Fri, 6 Dec 2024 15:07:10 +0800
Subject: [PATCH] Add support for multipe controllers on same mount point
---
src/config.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/src/config.c b/src/config.c
index dfabbd1..d194b32 100644
--- a/src/config.c
+++ b/src/config.c
@@ -635,6 +635,22 @@ void cgroup_config_cleanup_namespace_table(void)
sizeof(struct cg_mount_table_s) * CG_CONTROLLER_MAX);
}
+static int is_valid_controller(char *ctrl)
+{
+ int i;
+
+ static const char *ctrl_list[] = { "blkio", "cpu", "cpuacct", "cpuset", "devices",
+ "freezer", "hugetlb", "memory", "misc", "net_cls",
+ "net_prio", "perf_event", "pids", "rdma", NULL };
+
+ for (i = 0; ctrl_list[i]; i++) {
+ if (strncmp(ctrl, ctrl_list[i], strlen(ctrl_list[i])) == 0)
+ return 1;
+ }
+
+ return 0;
+}
+
/**
* Add necessary options for mount. Currently only 'none' option is added
* for mounts with only 'name=xxx' and without real controller.
@@ -663,6 +679,9 @@ static int cgroup_config_ajdust_mount_options(struct cg_mount_table_s *mount,
break;
strncpy(mount->name, controller, sizeof(mount->name));
mount->name[sizeof(mount->name)-1] = '\0';
+ free(controller);
+ token = strtok_r(NULL, ",", &save);
+ continue;
}
if (strncmp(token, "nodev", strlen("nodev")) == 0) {
@@ -675,6 +694,15 @@ static int cgroup_config_ajdust_mount_options(struct cg_mount_table_s *mount,
*flags |= MS_NOSUID;
}
+ if (is_valid_controller(token)) {
+ controller = strdup(token);
+ if (controller == NULL)
+ break;
+ strncat(mount->name, ",", FILENAME_MAX - strlen(mount->name)-1);
+ strncat(mount->name, controller, FILENAME_MAX - strlen(mount->name) - 1);
+ free(controller);
+ }
+
} else if (!name_only) {
/*
* We have controller + name=, do the right thing, since
@@ -687,7 +715,6 @@ static int cgroup_config_ajdust_mount_options(struct cg_mount_table_s *mount,
token = strtok_r(NULL, ",", &save);
}
- free(controller);
free(opts);
if (name_only) {
--
2.25.1