/usr/include/umview/umdev.h is in libumlib-dev 0.8.2-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* UMDEV: Virtual Device in Userspace
* Copyright (C) 2006 Renzo Davoli <renzo@cs.unibo.it>
*
* This program can be distributed under the terms of the GNU GPLv2.
* See the file COPYING.LIB.
*/
#ifndef _UMDEV_H_
#define _UMDEV_H_
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#define IOCTLLENMASK 0x07ffffff
#define IOCTL_R 0x10000000
#define IOCTL_W 0x20000000
#define UMDEV_DEBUG (1 << 29)
typedef void (* voidfun)(void *arg);
struct umdev;
struct dev_info {
/* Open flags, available in open and release */
int flags;
/* File handle. It usually set up in open and then
* available for all other operations */
uint64_t fh;
/* devhandle for management */
struct umdev *devhandle;
};
struct umdev_operations {
int (*getattr) (char, dev_t, struct stat64 *, struct umdev *devhandle);
int (*fgetattr) (char, dev_t, struct stat64 *, struct dev_info *);
int (*chmod) (char, dev_t, mode_t, struct umdev *devhandle);
int (*chown) (char, dev_t, uid_t, gid_t, struct umdev *devhandle);
int (*open) (char, dev_t, struct dev_info *);
int (*read) (char, dev_t, char *, size_t, loff_t, struct dev_info *);
int (*write) (char, dev_t, const char *, size_t, loff_t, struct dev_info *);
loff_t (*lseek) (char, dev_t, loff_t, int, loff_t, struct dev_info *);
int (*fsync) (char, dev_t, struct dev_info *);
int (*ioctl) (char, dev_t, int, void *, struct dev_info *);
int (*release) (char, dev_t, struct dev_info *);
int (*access) (char, dev_t, int, struct umdev *devhandle);
int (*event_subscribe) (char, dev_t, voidfun cb, void *arg, int how, struct dev_info *);
int (*ioctlparms) (char, dev_t, int arg, struct dev_info *);
int (*init) (char, dev_t, char *path, unsigned long flags, char *args, struct umdev *devhandle);
int (*fini) (char, dev_t, struct umdev *devhandle);
};
/* MOUNT ARG MGMT */
struct devargitem {
char *arg;
void (*fun)();
};
void devargs(char *opts, struct devargitem *devargtab, int devargsize, void *arg);
void umdev_setprivatedata(struct umdev *devhandle, void *privatedata);
void *umdev_getprivatedata(struct umdev *devhandle);
void umdev_setnsubdev(struct umdev *devhandle, int nsubdev);
int umdev_getnsubdev(struct umdev *devhandle);
void umdev_setmode(struct umdev *devhandle, mode_t mode);
mode_t umdev_getmode(struct umdev *devhandle);
dev_t umdev_getbasedev(struct umdev *devhandle);
#endif /* _UMDEV_H_ */
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