File 0001-api.c-change-cgroup-of-every-thread-of-a-process.patch of Package libcgroup.14591
From 10f5f86c7007a62d52fb34ca9c15437477a11df4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nikola=20Forr=C3=B3?= <nforro@redhat.com>
Date: Tue, 8 Dec 2015 17:09:08 +0100
Subject: [PATCH 1/2] api.c: change cgroup of every thread of a process
When changing cgroup of multi-threaded process, only the main threads
cgroup actually changed. Now all threads of a process are enumerated
and cgroup is changed for each of them.
---
src/api.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff --git a/src/api.c b/src/api.c
index bfd0177..27c9540 100644
--- a/src/api.c
+++ b/src/api.c
@@ -3108,10 +3108,13 @@ int cgroup_change_all_cgroups(void)
return -ECGOTHER;
while ((pid_dir = readdir(dir)) != NULL) {
- int err, pid;
+ int err, pid, tid;
uid_t euid;
gid_t egid;
char *procname = NULL;
+ DIR *tdir;
+ struct dirent *tid_dir = NULL;
+ char tpath[FILENAME_MAX] = { '\0' };
err = sscanf(pid_dir->d_name, "%i", &pid);
if (err < 1)
@@ -3125,11 +3128,24 @@ int cgroup_change_all_cgroups(void)
if (err)
continue;
- err = cgroup_change_cgroup_flags(euid,
- egid, procname, pid, CGFLAG_USECACHE);
- if (err)
- cgroup_dbg("cgroup change pid %i failed\n", pid);
+ snprintf(tpath, FILENAME_MAX, "%s%d/task/", path, pid);
+
+ tdir = opendir(tpath);
+ if (!tdir)
+ continue;
+
+ while ((tid_dir = readdir(tdir)) != NULL) {
+ err = sscanf(tid_dir->d_name, "%i", &tid);
+ if (err < 1)
+ continue;
+
+ err = cgroup_change_cgroup_flags(euid,
+ egid, procname, tid, CGFLAG_USECACHE);
+ if (err)
+ cgroup_dbg("cgroup change tid %i failed\n", tid);
+ }
+ closedir(tdir);
free(procname);
}
--
2.16.4