From 275e8ef8aa86fb1d759412a0e1ddee8307093975 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Fri, 27 Mar 2020 22:22:05 +0100 Subject: [PATCH] cgroups: use hidden directory for attaching cgroup Signed-off-by: Christian Brauner --- src/lxc/cgroups/cgfsng.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c index d326a87e2..effbf11a8 100644 --- a/src/lxc/cgroups/cgfsng.c +++ b/src/lxc/cgroups/cgfsng.c @@ -2065,12 +2065,12 @@ static int cgroup_attach_leaf(const struct lxc_conf *conf, int unified_fd, pid_t size_t pidstr_len; /* Create leaf cgroup. */ - ret = mkdirat(unified_fd, "lxc", 0755); + ret = mkdirat(unified_fd, ".lxc", 0755); if (ret < 0 && errno != EEXIST) - return log_error_errno(-1, errno, "Failed to create leaf cgroup \"lxc\""); + return log_error_errno(-1, errno, "Failed to create leaf cgroup \".lxc\""); pidstr_len = sprintf(pidstr, INT64_FMT, (int64_t)pid); - ret = lxc_writeat(unified_fd, "lxc/cgroup.procs", pidstr, pidstr_len); + ret = lxc_writeat(unified_fd, ".lxc/cgroup.procs", pidstr, pidstr_len); if (ret < 0) ret = lxc_writeat(unified_fd, "cgroup.procs", pidstr, pidstr_len); if (ret == 0) @@ -2082,10 +2082,11 @@ static int cgroup_attach_leaf(const struct lxc_conf *conf, int unified_fd, pid_t do { bool rm = false; - char attach_cgroup[STRLITERALLEN("lxc-1000/cgroup.procs") + 1]; + char attach_cgroup[STRLITERALLEN(".lxc-1000/cgroup.procs") + 1]; char *slash; - sprintf(attach_cgroup, "lxc-%d/cgroup.procs", idx); + snprintf(attach_cgroup, STRLITERALLEN(".lxc-%d/cgroup.procs"), + ".lxc-%d/cgroup.procs", idx); slash = &attach_cgroup[ret] - STRLITERALLEN("/cgroup.procs"); *slash = '\0'; -- 2.47.2