90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
#ifndef __UM_FS_HOSTFS
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#define __UM_FS_HOSTFS
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#include "os.h"
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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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/* These two are 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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/* 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 in this patch:
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*
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* http://linux.bkbits.net:8080/linux-2.5/
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* cset@3caf4a12k4XgDzK7wyK-TGpSZ9u2Ww?nav=index.html
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* |src/.|src/include|src/include/linux|related/include/linux/fs.h
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*
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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_iattr {
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unsigned int ia_valid;
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mode_t 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 timespec ia_atime;
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struct timespec ia_mtime;
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struct timespec ia_ctime;
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};
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extern int stat_file(const char *path, unsigned long long *inode_out,
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int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
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unsigned long long *size_out, struct timespec *atime_out,
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struct timespec *mtime_out, struct timespec *ctime_out,
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int *blksize_out, unsigned long long *blocks_out, 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 int file_type(const char *path, int *maj, int *min);
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extern void *open_dir(char *path, int *err_out);
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extern char *read_dir(void *stream, unsigned long long *pos,
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unsigned long long *ino_out, int *len_out);
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extern void close_file(void *stream);
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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 ur, int uw, int ux, int gr,
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int gw, int gx, int or, int ow, int ox);
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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 do_rmdir(const char *file);
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extern int do_mknod(const char *file, int mode, unsigned int major, unsigned int minor);
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extern int link_file(const char *from, const char *to);
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extern int 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 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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long *spare_out);
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#endif
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