relay_open (9) - Linux Manuals
relay_open: create a new relay channel
relay_open - create a new relay channel
struct rchan * relay_open(const char
* base_filename, struct dentry * parent, size_t subbuf_size, size_t n_subbufs, struct rchan_callbacks * cb, void * private_data);
- base name of files to create, NULL for buffering only
- dentry of parent directory, NULL for root directory or buffer
- size of sub-buffers
- number of sub-buffers
- client callback functions
- user-defined data
Returns channel pointer if successful, NULL otherwise.
Creates a channel buffer for each cpu using the sizes and attributes specified. The created channel buffer files will be named base_filename0...base_filenameN-1. File permissions will be S_IRUSR.
If opening a buffer (parent = NULL) that you later wish to register in a filesystem, call relay_late_setup_files once the parent dentry is available.