From 06442440bc442ef79cb060c6e786eaeeabd9044b Mon Sep 17 00:00:00 2001 From: David Teigland Date: Tue, 8 Aug 2006 11:31:30 -0500 Subject: [DLM] break from snprintf loop When the debug buffer has filled up, break from the loop and return the correct number of bytes that have been written. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse --- fs/dlm/debug_fs.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'fs/dlm/debug_fs.c') diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index 8f471d9a9e3a..9c3aeddc8667 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -310,16 +310,19 @@ static ssize_t waiters_read(struct file *file, char __user *userbuf, { struct dlm_ls *ls = file->private_data; struct dlm_lkb *lkb; - size_t len = DLM_DEBUG_BUF_LEN, pos = 0, rv; + size_t len = DLM_DEBUG_BUF_LEN, pos = 0, ret, rv; mutex_lock(&debug_buf_lock); mutex_lock(&ls->ls_waiters_mutex); memset(debug_buf, 0, sizeof(debug_buf)); list_for_each_entry(lkb, &ls->ls_waiters, lkb_wait_reply) { - pos += snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n", - lkb->lkb_id, lkb->lkb_wait_type, - lkb->lkb_nodeid, lkb->lkb_resource->res_name); + ret = snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n", + lkb->lkb_id, lkb->lkb_wait_type, + lkb->lkb_nodeid, lkb->lkb_resource->res_name); + if (ret >= len - pos) + break; + pos += ret; } mutex_unlock(&ls->ls_waiters_mutex); -- cgit v1.2.3