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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __UM_FS_HOSTFS #define __UM_FS_HOSTFS #include <os.h> /* * These are exactly the same definitions as in fs.h, but the names are * changed so that this file can be included in both kernel and user files. */ #define HOSTFS_ATTR_MODE 1 #define HOSTFS_ATTR_UID 2 #define HOSTFS_ATTR_GID 4 #define HOSTFS_ATTR_SIZE 8 #define HOSTFS_ATTR_ATIME 16 #define HOSTFS_ATTR_MTIME 32 #define HOSTFS_ATTR_CTIME 64 #define HOSTFS_ATTR_ATIME_SET 128 #define HOSTFS_ATTR_MTIME_SET 256 /* This one is unused by hostfs. */ #define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */ #define HOSTFS_ATTR_ATTR_FLAG 1024 /* * If you are very careful, you'll notice that these two are missing: * * #define ATTR_KILL_SUID 2048 * #define ATTR_KILL_SGID 4096 * * and this is because they were added in 2.5 development. * Actually, they are not needed by most ->setattr() methods - they are set by * callers of notify_change() to notify that the setuid/setgid bits must be * dropped. * notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE * is on, and remove the appropriate bits from attr->ia_mode (attr is a * "struct iattr *"). -BlaisorBlade */ struct hostfs_timespec { long long tv_sec; long long tv_nsec; }; struct hostfs_iattr { unsigned int ia_valid; unsigned short ia_mode; uid_t ia_uid; gid_t ia_gid; loff_t ia_size; struct hostfs_timespec ia_atime; struct hostfs_timespec ia_mtime; struct hostfs_timespec ia_ctime; }; struct hostfs_stat { unsigned long long ino; unsigned int mode; unsigned int nlink; unsigned int uid; unsigned int gid; unsigned long long size; struct hostfs_timespec atime, mtime, ctime; unsigned int blksize; unsigned long long blocks; unsigned int maj; unsigned int min; }; extern int stat_file(const char *path, struct hostfs_stat *p, int fd); extern int access_file(char *path, int r, int w, int x); extern int open_file(char *path, int r, int w, int append); extern void *open_dir(char *path, int *err_out); extern void seek_dir(void *stream, unsigned long long pos); extern char *read_dir(void *stream, unsigned long long *pos_out, unsigned long long *ino_out, int *len_out, unsigned int *type_out); extern void close_file(void *stream); extern int replace_file(int oldfd, int fd); extern void close_dir(void *stream); extern int read_file(int fd, unsigned long long *offset, char *buf, int len); extern int write_file(int fd, unsigned long long *offset, const char *buf, int len); extern int lseek_file(int fd, long long offset, int whence); extern int fsync_file(int fd, int datasync); extern int file_create(char *name, int mode); extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd); extern int make_symlink(const char *from, const char *to); extern int unlink_file(const char *file); extern int do_mkdir(const char *file, int mode); extern int hostfs_do_rmdir(const char *file); extern int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor); extern int link_file(const char *to, const char *from); extern int hostfs_do_readlink(char *file, char *buf, int size); extern int rename_file(char *from, char *to); extern int rename2_file(char *from, char *to, unsigned int flags); extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, long long *bfree_out, long long *bavail_out, long long *files_out, long long *ffree_out, void *fsid_out, int fsid_size, long *namelen_out); #endif |