libnvmf_registry_device_for_each-libnvme32
Iterate over live controller registry entries
Usage
int libnvmf_registry_device_for_each (struct libnvme_global_ctx *ctx , int (*callback)(const char *device, void *user_data) , void *user_data );
Arguments
ctx
|
libnvme global context; must not be NULL |
|---|---|
callback
|
Callback invoked for each live entry |
user_data
|
User data passed to callback |
Overview
Scans the registry directory and invokes callback for each entry whose corresponding /dev/nvmeN device node exists. Stale entries left behind after a controller is removed are silently skipped. The existence check is advisory: a device may be removed between the check and callback invocation; callers should handle ENOENT gracefully.
Return
0 on success, negative errno if the registry directory cannot be opened. Returns 0 when the directory does not exist (nothing registered).