DCMD_FSEVMGR

Enable inotify writing for an OCB

Synopsis:

#include <sys/dcmd_fsevmgr.h>

#define DCMD_FSEVMGR_WRITER   __DIOTF(_DCMD_FSEVMGR, 6, fsevmgr_chidkey_t)

Arguments to devctl():

Argument	Value
`filedes`	A file descriptor that you obtained by opening /dev/fsevents
`dcmd`	DCMD_FSEVMGR_WRITER
`dev_data_ptr`	A pointer to a fsevmgr_chidkey_t
`n_bytes`	`sizeof(fsevmgr_chidkey_t)`
`dev_info_ptr`	NULL

Description:

This command enables inotify writing for an OCB.

Input:

An initialize fsevmgr_chidkey_t structure:

typedef struct fsevmgr_chidkey_s {
        int32_t chid;           /* Communication channel id */
        uint32_t wrid;          /* Writer unique id */
        uint64_t key;           /* Populated with a communication key */
} fsevmgr_chidkey_t;

Set chid to the channel ID of the would-be writer.

Output:

The wrid and key are set.

Errors:

The devctl() function can return the following, in addition to the error codes listed in its entry in the C Library Reference:

EINVAL: The buffer isn't the right size, the interface isn't for inotify, or the writer is already registered.

DCMD_FSEVMGR_WRITER