diff options
Diffstat (limited to 'fs/dlm/debug_fs.c')
| -rw-r--r-- | fs/dlm/debug_fs.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index 47e9d57e4cae..555904eeea8e 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -768,6 +768,42 @@ static int dlm_version_show(struct seq_file *file, void *offset) } DEFINE_SHOW_ATTRIBUTE(dlm_version); +static ssize_t dlm_rawmsg_write(struct file *fp, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + void *buf; + int ret; + + if (count > PAGE_SIZE || count < sizeof(struct dlm_header)) + return -EINVAL; + + buf = kmalloc(PAGE_SIZE, GFP_NOFS); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, user_buf, count)) { + ret = -EFAULT; + goto out; + } + + ret = dlm_midcomms_rawmsg_send(fp->private_data, buf, count); + if (ret) + goto out; + + kfree(buf); + return count; + +out: + kfree(buf); + return ret; +} + +static const struct file_operations dlm_rawmsg_fops = { + .open = simple_open, + .write = dlm_rawmsg_write, + .llseek = no_llseek, +}; + void *dlm_create_debug_comms_file(int nodeid, void *data) { struct dentry *d_node; @@ -782,6 +818,7 @@ void *dlm_create_debug_comms_file(int nodeid, void *data) debugfs_create_file("send_queue_count", 0444, d_node, data, &dlm_send_queue_cnt_fops); debugfs_create_file("version", 0444, d_node, data, &dlm_version_fops); + debugfs_create_file("rawmsg", 0200, d_node, data, &dlm_rawmsg_fops); return d_node; } |