blob: b7e33303cf396da5f12e0cd7ca7939cd5f6eb76d [file] [log] [blame]
/*
* Copyright (c) 2019, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef DEBUGFS_H
#define DEBUGFS_H
#define NAMELEN 13 /* Maximum length of a file name */
#define PATHLEN 41 /* Maximum length of a path */
#define STATLEN 41 /* Size of static part of dir format */
#define ROOTLEN (2 + 4) /* Size needed to encode root string */
#define FILNAMLEN (2 + NAMELEN) /* Size needed to encode filename */
#define DIRLEN (STATLEN + FILNAMLEN + 3*ROOTLEN) /* Size of dir entry */
#define KSEEK_SET 0
#define KSEEK_CUR 1
#define KSEEK_END 2
#define NELEM(tab) (sizeof(tab) / sizeof((tab)[0]))
typedef unsigned short qid_t; /* FIXME: short type not recommended? */
/*******************************************************************************
* This structure contains the necessary information to represent a 9p
* directory.
******************************************************************************/
typedef struct {
char name[NAMELEN];
long length;
unsigned char mode;
unsigned char index;
unsigned char dev;
qid_t qid;
} dir_t;
/* Permission definitions used as flags */
#define O_READ (1 << 0)
#define O_WRITE (1 << 1)
#define O_RDWR (1 << 2)
#define O_BIND (1 << 3)
#define O_DIR (1 << 4)
#define O_STAT (1 << 5)
/* 9p interface */
int mount(const char *srv, const char *mnt, const char *spec);
int create(const char *name, int flags);
int open(const char *name, int flags);
int close(int fd);
int read(int fd, void *buf, int n);
int write(int fd, void *buf, int n);
int seek(int fd, long off, int whence);
int bind(const char *path, const char *where);
int stat(const char *path, dir_t *dir);
/* DebugFS initialization */
void debugfs_init(void);
#endif /* DEBUGFS_H */