hostfs.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __UM_FS_HOSTFS
 3#define __UM_FS_HOSTFS
 4
 5#include <os.h>
 6#include <generated/asm-offsets.h>
 7
 8struct hostfs_timespec {
 9	long long tv_sec;
10	long long tv_nsec;
11};
12
13struct hostfs_iattr {
14	unsigned int		ia_valid;
15	unsigned short		ia_mode;
16	uid_t			ia_uid;
17	gid_t			ia_gid;
18	loff_t			ia_size;
19	struct hostfs_timespec	ia_atime;
20	struct hostfs_timespec	ia_mtime;
21	struct hostfs_timespec	ia_ctime;
22};
23
24struct hostfs_stat {
25	unsigned long long ino;
26	unsigned int mode;
27	unsigned int nlink;
28	unsigned int uid;
29	unsigned int gid;
30	unsigned long long size;
31	struct hostfs_timespec atime, mtime, ctime, btime;
32	unsigned int blksize;
33	unsigned long long blocks;
34	struct {
35		unsigned int maj;
36		unsigned int min;
37	} rdev, dev;
38};
39
40extern int stat_file(const char *path, struct hostfs_stat *p, int fd);
41extern int access_file(char *path, int r, int w, int x);
42extern int open_file(char *path, int r, int w, int append);
43extern void *open_dir(char *path, int *err_out);
44extern void seek_dir(void *stream, unsigned long long pos);
45extern char *read_dir(void *stream, unsigned long long *pos_out,
46		      unsigned long long *ino_out, int *len_out,
47		      unsigned int *type_out);
48extern void close_file(void *stream);
49extern int replace_file(int oldfd, int fd);
50extern void close_dir(void *stream);
51extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
52extern int write_file(int fd, unsigned long long *offset, const char *buf,
53		      int len);
54extern int lseek_file(int fd, long long offset, int whence);
55extern int fsync_file(int fd, int datasync);
56extern int file_create(char *name, int mode);
57extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd);
58extern int make_symlink(const char *from, const char *to);
59extern int unlink_file(const char *file);
60extern int do_mkdir(const char *file, int mode);
61extern int hostfs_do_rmdir(const char *file);
62extern int do_mknod(const char *file, int mode, unsigned int major,
63		    unsigned int minor);
64extern int link_file(const char *to, const char *from);
65extern int hostfs_do_readlink(char *file, char *buf, int size);
66extern int rename_file(char *from, char *to);
67extern int rename2_file(char *from, char *to, unsigned int flags);
68extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
69		     long long *bfree_out, long long *bavail_out,
70		     long long *files_out, long long *ffree_out,
71		     void *fsid_out, int fsid_size, long *namelen_out);
72
73#endif