1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * SE/HMC Drive FTP Services
4 *
5 * Copyright IBM Corp. 2013
6 * Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
7 */
8
9#ifndef __HMCDRV_FTP_H__
10#define __HMCDRV_FTP_H__
11
12#include <linux/types.h> /* size_t, loff_t */
13
14/*
15 * HMC drive FTP Service max. length of path (w/ EOS)
16 */
17#define HMCDRV_FTP_FIDENT_MAX 192
18
19/**
20 * enum hmcdrv_ftp_cmdid - HMC drive FTP commands
21 * @HMCDRV_FTP_NOOP: do nothing (only for probing)
22 * @HMCDRV_FTP_GET: read a file
23 * @HMCDRV_FTP_PUT: (over-) write a file
24 * @HMCDRV_FTP_APPEND: append to a file
25 * @HMCDRV_FTP_DIR: list directory long (ls -l)
26 * @HMCDRV_FTP_NLIST: list files, no directories (name list)
27 * @HMCDRV_FTP_DELETE: delete a file
28 * @HMCDRV_FTP_CANCEL: cancel operation (SCLP/LPAR only)
29 */
30enum hmcdrv_ftp_cmdid {
31 HMCDRV_FTP_NOOP = 0,
32 HMCDRV_FTP_GET = 1,
33 HMCDRV_FTP_PUT = 2,
34 HMCDRV_FTP_APPEND = 3,
35 HMCDRV_FTP_DIR = 4,
36 HMCDRV_FTP_NLIST = 5,
37 HMCDRV_FTP_DELETE = 6,
38 HMCDRV_FTP_CANCEL = 7
39};
40
41/**
42 * struct hmcdrv_ftp_cmdspec - FTP command specification
43 * @id: FTP command ID
44 * @ofs: offset in file
45 * @fname: filename (ASCII), null-terminated
46 * @buf: kernel-space transfer data buffer, 4k aligned
47 * @len: (max) number of bytes to transfer from/to @buf
48 */
49struct hmcdrv_ftp_cmdspec {
50 enum hmcdrv_ftp_cmdid id;
51 loff_t ofs;
52 const char *fname;
53 void __kernel *buf;
54 size_t len;
55};
56
57int hmcdrv_ftp_startup(void);
58void hmcdrv_ftp_shutdown(void);
59int hmcdrv_ftp_probe(void);
60ssize_t hmcdrv_ftp_do(const struct hmcdrv_ftp_cmdspec *ftp);
61ssize_t hmcdrv_ftp_cmd(char __kernel *cmd, loff_t offset,
62 char __user *buf, size_t len);
63
64#endif /* __HMCDRV_FTP_H__ */
65

source code of linux/drivers/s390/char/hmcdrv_ftp.h