diff options
Diffstat (limited to 'fs/ocfs2/stackglue.c')
| -rw-r--r-- | fs/ocfs2/stackglue.c | 49 |
1 files changed, 40 insertions, 9 deletions
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index fb9b8e0db260..5f78ff4c76c7 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -34,11 +34,13 @@ #define OCFS2_STACK_PLUGIN_O2CB "o2cb" #define OCFS2_STACK_PLUGIN_USER "user" +#define OCFS2_MAX_HB_CTL_PATH 256 static struct ocfs2_locking_protocol *lproto; static DEFINE_SPINLOCK(ocfs2_stack_lock); static LIST_HEAD(ocfs2_stack_list); static char cluster_stack_name[OCFS2_STACK_LABEL_LEN + 1]; +static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl"; /* * The stack currently in use. If not null, active_stack->sp_count > 0, @@ -363,6 +365,42 @@ int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn, } EXPORT_SYMBOL_GPL(ocfs2_cluster_disconnect); +/* + * Leave the group for this filesystem. This is executed by a userspace + * program (stored in ocfs2_hb_ctl_path). + */ +static void ocfs2_leave_group(const char *group) +{ + int ret; + char *argv[5], *envp[3]; + + argv[0] = ocfs2_hb_ctl_path; + argv[1] = "-K"; + argv[2] = "-u"; + argv[3] = (char *)group; + argv[4] = NULL; + + /* minimal command environment taken from cpu_run_sbin_hotplug */ + envp[0] = "HOME=/"; + envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; + envp[2] = NULL; + + ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC); + if (ret < 0) { + printk(KERN_ERR + "ocfs2: Error %d running user helper " + "\"%s %s %s %s\"\n", + ret, argv[0], argv[1], argv[2], argv[3]); + } +} + +/* + * Hangup is a required post-umount. ocfs2-tools software expects the + * filesystem to call "ocfs2_hb_ctl" during unmount. This happens + * regardless of whether the DLM got started, so we can't do it + * in ocfs2_cluster_disconnect(). The ocfs2_leave_group() function does + * the actual work. + */ void ocfs2_cluster_hangup(const char *group, int grouplen) { BUG_ON(group == NULL); @@ -371,6 +409,8 @@ void ocfs2_cluster_hangup(const char *group, int grouplen) if (active_stack->sp_ops->hangup) active_stack->sp_ops->hangup(group, grouplen); + ocfs2_leave_group(group); + /* cluster_disconnect() was called with hangup_pending==1 */ ocfs2_stack_driver_put(); } @@ -559,9 +599,6 @@ error: #define FS_OCFS2_NM 1 -#define OCFS2_MAX_HB_CTL_PATH 256 -static char ocfs2_hb_ctl_path[OCFS2_MAX_HB_CTL_PATH] = "/sbin/ocfs2_hb_ctl"; - static ctl_table ocfs2_nm_table[] = { { .ctl_name = 1, @@ -613,12 +650,6 @@ static ctl_table ocfs2_root_table[] = { static struct ctl_table_header *ocfs2_table_header = NULL; -const char *ocfs2_get_hb_ctl_path(void) -{ - return ocfs2_hb_ctl_path; -} -EXPORT_SYMBOL_GPL(ocfs2_get_hb_ctl_path); - /* * Initialization |