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103 lines
3.5 KiB
103 lines
3.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __UM_FS_HOSTFS |
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#define __UM_FS_HOSTFS |
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#include <os.h> |
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/* |
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* These are exactly the same definitions as in fs.h, but the names are |
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* changed so that this file can be included in both kernel and user files. |
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*/ |
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#define HOSTFS_ATTR_MODE 1 |
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#define HOSTFS_ATTR_UID 2 |
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#define HOSTFS_ATTR_GID 4 |
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#define HOSTFS_ATTR_SIZE 8 |
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#define HOSTFS_ATTR_ATIME 16 |
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#define HOSTFS_ATTR_MTIME 32 |
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#define HOSTFS_ATTR_CTIME 64 |
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#define HOSTFS_ATTR_ATIME_SET 128 |
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#define HOSTFS_ATTR_MTIME_SET 256 |
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/* This one is unused by hostfs. */ |
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#define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */ |
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#define HOSTFS_ATTR_ATTR_FLAG 1024 |
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/* |
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* If you are very careful, you'll notice that these two are missing: |
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* |
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* #define ATTR_KILL_SUID 2048 |
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* #define ATTR_KILL_SGID 4096 |
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* |
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* and this is because they were added in 2.5 development. |
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* Actually, they are not needed by most ->setattr() methods - they are set by |
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* callers of notify_change() to notify that the setuid/setgid bits must be |
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* dropped. |
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* notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE |
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* is on, and remove the appropriate bits from attr->ia_mode (attr is a |
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* "struct iattr *"). -BlaisorBlade |
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*/ |
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struct hostfs_timespec { |
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long long tv_sec; |
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long long tv_nsec; |
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}; |
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struct hostfs_iattr { |
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unsigned int ia_valid; |
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unsigned short ia_mode; |
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uid_t ia_uid; |
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gid_t ia_gid; |
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loff_t ia_size; |
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struct hostfs_timespec ia_atime; |
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struct hostfs_timespec ia_mtime; |
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struct hostfs_timespec ia_ctime; |
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}; |
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struct hostfs_stat { |
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unsigned long long ino; |
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unsigned int mode; |
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unsigned int nlink; |
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unsigned int uid; |
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unsigned int gid; |
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unsigned long long size; |
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struct hostfs_timespec atime, mtime, ctime; |
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unsigned int blksize; |
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unsigned long long blocks; |
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unsigned int maj; |
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unsigned int min; |
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}; |
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extern int stat_file(const char *path, struct hostfs_stat *p, int fd); |
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extern int access_file(char *path, int r, int w, int x); |
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extern int open_file(char *path, int r, int w, int append); |
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extern void *open_dir(char *path, int *err_out); |
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extern void seek_dir(void *stream, unsigned long long pos); |
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extern char *read_dir(void *stream, unsigned long long *pos_out, |
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unsigned long long *ino_out, int *len_out, |
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unsigned int *type_out); |
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extern void close_file(void *stream); |
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extern int replace_file(int oldfd, int fd); |
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extern void close_dir(void *stream); |
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extern int read_file(int fd, unsigned long long *offset, char *buf, int len); |
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extern int write_file(int fd, unsigned long long *offset, const char *buf, |
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int len); |
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extern int lseek_file(int fd, long long offset, int whence); |
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extern int fsync_file(int fd, int datasync); |
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extern int file_create(char *name, int mode); |
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extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd); |
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extern int make_symlink(const char *from, const char *to); |
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extern int unlink_file(const char *file); |
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extern int do_mkdir(const char *file, int mode); |
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extern int hostfs_do_rmdir(const char *file); |
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extern int do_mknod(const char *file, int mode, unsigned int major, |
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unsigned int minor); |
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extern int link_file(const char *to, const char *from); |
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extern int hostfs_do_readlink(char *file, char *buf, int size); |
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extern int rename_file(char *from, char *to); |
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extern int rename2_file(char *from, char *to, unsigned int flags); |
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extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, |
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long long *bfree_out, long long *bavail_out, |
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long long *files_out, long long *ffree_out, |
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void *fsid_out, int fsid_size, long *namelen_out); |
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#endif
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