1 files changed, 100 insertions, 0 deletions

diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h
new file mode 100644
index 000000000000..c1516d013bf6
--- /dev/null
+++ b/fs/hostfs/hostfs.h
@@ -0,0 +1,100 @@
+#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
+
+/* These two are 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 in this patch:
+ *
+ * http://linux.bkbits.net:8080/linux-2.5/
+ * cset@3caf4a12k4XgDzK7wyK-TGpSZ9u2Ww?nav=index.html
+ * |src/.|src/include|src/include/linux|related/include/linux/fs.h
+ *
+ * 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_iattr {
+        unsigned int    ia_valid;
+        mode_t          ia_mode;
+        uid_t           ia_uid;
+        gid_t           ia_gid;
+        loff_t          ia_size;
+        struct timespec ia_atime;
+        struct timespec ia_mtime;
+        struct timespec ia_ctime;
+        unsigned int    ia_attr_flags;
+};
+
+extern int stat_file(const char *path, unsigned long long *inode_out,
+                     int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
+                     unsigned long long *size_out, struct timespec *atime_out,
+                     struct timespec *mtime_out, struct timespec *ctime_out,
+                     int *blksize_out, unsigned long long *blocks_out);
+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 int file_type(const char *path, int *maj, int *min);
+extern void *open_dir(char *path, int *err_out);
+extern char *read_dir(void *stream, unsigned long long *pos,
+                      unsigned long long *ino_out, int *len_out);
+extern void close_file(void *stream);
+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 file_create(char *name, int ur, int uw, int ux, int gr,
+                       int gw, int gx, int or, int ow, int ox);
+extern int set_attr(const char *file, struct hostfs_iattr *attrs);
+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 do_rmdir(const char *file);
+extern int do_mknod(const char *file, int mode, int dev);
+extern int link_file(const char *from, const char *to);
+extern int do_readlink(char *file, char *buf, int size);
+extern int rename_file(char *from, char *to);
+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,
+                     long *spare_out);
+
+#endif
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */