From ab88711608176137b58557925c36a2c309c96dd5 Mon Sep 17 00:00:00 2001 From: Dhaval Giani Date: Tue, 29 Jul 2008 06:42:13 +0000 Subject: [PATCH] libcgroup: Add more debug statements From: Vivek Goyal o Add some more debug statements Signed-off-by: Vivek Goyal Signed-off-by: Dhaval Giani git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@115 4f4bb910-9a46-0410-90c8-c897d4f1cd53 --- api.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/api.c b/api.c index acc00e56..150f186e 100644 --- a/api.c +++ b/api.c @@ -306,9 +306,10 @@ int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid) FILE *tasks; int i; - if (!cgroup_initialized) + if (!cgroup_initialized) { + dbg ("libcgroup is not initialized\n"); return ECGROUPNOTINITIALIZED; - + } if(!cgroup) { pthread_rwlock_rdlock(&cg_mount_table_lock); @@ -335,8 +336,11 @@ int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid) pthread_rwlock_unlock(&cg_mount_table_lock); } else { for (i = 0; i < cgroup->index; i++) { - if (!cgroup_test_subsys_mounted(cgroup->controller[i]->name)) + if (!cgroup_test_subsys_mounted(cgroup->controller[i]->name)) { + dbg("subsystem %s is not mounted\n", + cgroup->controller[i]->name); return ECGROUPSUBSYSNOTMOUNTED; + } } for (i = 0; i < cgroup->index; i++) { if (!cg_build_path(cgroup->name, path, @@ -347,6 +351,9 @@ int cgroup_attach_task_pid(struct cgroup *cgroup, pid_t tid) tasks = fopen(path, "w"); if (!tasks) { + dbg("fopen failed for %s:%s", path, + strerror(errno)); + switch (errno) { case EPERM: return ECGROUPNOTOWNER; @@ -469,8 +476,11 @@ int cgroup_modify_cgroup(struct cgroup *cgroup) return ECGROUPNOTALLOWED; for (i = 0; i < cgroup->index; i++) { - if (!cgroup_test_subsys_mounted(cgroup->controller[i]->name)) + if (!cgroup_test_subsys_mounted(cgroup->controller[i]->name)) { + dbg("subsystem %s is not mounted\n", + cgroup->controller[i]->name); return ECGROUPSUBSYSNOTMOUNTED; + } } for (i = 0; i < cgroup->index; i++, strcpy(path, base)) { -- 2.47.2