The C and C++ Include Header Files

/usr/include/linux/pktcdvd.h


$ cat -n /usr/include/linux/pktcdvd.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	/*
     3	 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
     4	 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
     5	 *
     6	 * May be copied or modified under the terms of the GNU General Public
     7	 * License.  See linux/COPYING for more information.
     8	 *
     9	 * Packet writing layer for ATAPI and SCSI CD-R, CD-RW, DVD-R, and
    10	 * DVD-RW devices.
    11	 *
    12	 */
    13	#ifndef __PKTCDVD_H
    14	#define __PKTCDVD_H
    15	
    16	#include <linux/types.h>
    17	
    18	/*
    19	 * UNUSED:
    20	 * 1 for normal debug messages, 2 is very verbose. 0 to turn it off.
    21	 */
    22	#define PACKET_DEBUG		1
    23	
    24	#define	MAX_WRITERS		8
    25	
    26	#define PKT_RB_POOL_SIZE	512
    27	
    28	/*
    29	 * How long we should hold a non-full packet before starting data gathering.
    30	 */
    31	#define PACKET_WAIT_TIME	(HZ * 5 / 1000)
    32	
    33	/*
    34	 * No user-servicable parts beyond this point ->
    35	 */
    36	
    37	/*
    38	 * device types
    39	 */
    40	#define PACKET_CDR		1
    41	#define	PACKET_CDRW		2
    42	#define PACKET_DVDR		3
    43	#define PACKET_DVDRW		4
    44	
    45	/*
    46	 * flags
    47	 */
    48	#define PACKET_WRITABLE		1	/* pd is writable */
    49	#define PACKET_NWA_VALID	2	/* next writable address valid */
    50	#define PACKET_LRA_VALID	3	/* last recorded address valid */
    51	#define PACKET_MERGE_SEGS	4	/* perform segment merging to keep */
    52						/* underlying cdrom device happy */
    53	
    54	/*
    55	 * Disc status -- from READ_DISC_INFO
    56	 */
    57	#define PACKET_DISC_EMPTY	0
    58	#define PACKET_DISC_INCOMPLETE	1
    59	#define PACKET_DISC_COMPLETE	2
    60	#define PACKET_DISC_OTHER	3
    61	
    62	/*
    63	 * write type, and corresponding data block type
    64	 */
    65	#define PACKET_MODE1		1
    66	#define PACKET_MODE2		2
    67	#define PACKET_BLOCK_MODE1	8
    68	#define PACKET_BLOCK_MODE2	10
    69	
    70	/*
    71	 * Last session/border status
    72	 */
    73	#define PACKET_SESSION_EMPTY		0
    74	#define PACKET_SESSION_INCOMPLETE	1
    75	#define PACKET_SESSION_RESERVED		2
    76	#define PACKET_SESSION_COMPLETE		3
    77	
    78	#define PACKET_MCN			"4a656e734178626f65323030300000"
    79	
    80	#undef PACKET_USE_LS
    81	
    82	#define PKT_CTRL_CMD_SETUP	0
    83	#define PKT_CTRL_CMD_TEARDOWN	1
    84	#define PKT_CTRL_CMD_STATUS	2
    85	
    86	struct pkt_ctrl_command {
    87		__u32 command;				/* in: Setup, teardown, status */
    88		__u32 dev_index;			/* in/out: Device index */
    89		__u32 dev;				/* in/out: Device nr for cdrw device */
    90		__u32 pkt_dev;				/* in/out: Device nr for packet device */
    91		__u32 num_devices;			/* out: Largest device index + 1 */
    92		__u32 padding;				/* Not used */
    93	};
    94	
    95	/*
    96	 * packet ioctls
    97	 */
    98	#define PACKET_IOCTL_MAGIC	('X')
    99	#define PACKET_CTRL_CMD		_IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command)
   100	
   101	
   102	#endif /* __PKTCDVD_H */