Installation and use of fuse virtual file system

FUSE is a good thing and can be used in a special field to implement your own virtual file system.

Fuse Download and Installation:

Download the latest installation package from fuse website: http://sourceforge.net/projects/fuse/files/fuse-2.X/

Installation is simple:

./configure

Make

Make install (note: This step is to be done in root user mode)

To mount the fuse virtual file system:

Modprobe Fuse

To see if fuse was mounted successfully:

Lsmod|grep Fuse executes the command and outputs

[Email protected] fuse]# Lsmod | grep fuse
Fuse 49237 2

Prove Mount succeeded

Down is the use of the problem, hehe.

After installing fuse, its subfolder example has some well-done file system instances, teaching you to mount and use the file system, recommend the use of FUSEXMP_FH.C This example

Because he includes all of the file operations related mappings.

Compiling the FUSEXMP_FH.C requires the following compile command:

Gcc-wall ' pkg-config fuse--cflags--libs '-lulockmgr fusexmp_fh.c-o fusexmp_fh.exe

Build Fusexmp_fh.exe executable after compiling

Create a folder under the/mnt directory fuse

Cd/mnt

mkdir Fuse

Then go to the Fusexmp_fh.exe directory to execute

./fusexmp_fh.exe/mnt/fuse-d

The virtual file system can be started, this time to execute

DF command, you can see that the virtual file system is mounted.

[[email protected] example]# DF
Fuse 6824296 3499688 2972352 55%/mnt/fuse

This time you enter the/mnt/fuse directory

Execute LS, you can see the mapped file contents, the file operation under this directory will be called to fusexmp_fh.exe this process registered

File manipulation functions.

The registration handle is as follows:

[CPP]View PlainCopy

2. Static struct Fuse_operations Xmp_oper = {
4. . GetAttr = Xmp_getattr,
6. . fgetattr = Xmp_fgetattr,
8. . Access = Xmp_access,
10. . Readlink = Xmp_readlink,
12. . Opendir = Xmp_opendir,
14. . Readdir = Xmp_readdir,
16. . Releasedir = Xmp_releasedir,
18. . Mknod = Xmp_mknod,
20. . mkdir = Xmp_mkdir,
22. . symlink = Xmp_symlink,
24. . Unlink = Xmp_unlink,
26. . rmdir = Xmp_rmdir,
28. . Rename = Xmp_rename,
30. . link = xmp_link,
32. . chmod = Xmp_chmod,
34. . Chown = Xmp_chown,
36. . truncate = Xmp_truncate,
38. . ftruncate = Xmp_ftruncate,
40. . Utimens = Xmp_utimens,
42. . Create = Xmp_create,
44. . open = Xmp_open,
46. . Read = Xmp_read,
48. . write = Xmp_write,
50. . Statfs = Xmp_statfs,
52. . Flush = Xmp_flush,
54. . Release = Xmp_release,
56. . Fsync = Xmp_fsync,
58. #ifdef HAVE_SETXATTR
60. . setxattr = Xmp_setxattr,
62. . getxattr = Xmp_getxattr,
64. . listxattr = Xmp_listxattr,
66. . removexattr = Xmp_removexattr,
68. #endif
70. . Lock = Xmp_lock,
74. . FLAG_NULLPATH_OK = 1,
76. };

For example, if you execute mkdir XXX, this function is called to the fusexmp_fh.exe process int xmp_mkdir (const char *path, mode_t mode).

You can modify the implementation of this function to add your own information inside.

When the following error message appears:

Fuse:bad mount point '/mnt/fuse ': Transport endpoint are not connected

You just have to do

Umount-l/mnt/fuse command can dissolve the above error, the specific reason is needless to say, umount so obvious.

We use fuse this time mainly to realize the function of a cloud.

http://blog.csdn.net/langeldep/article/details/6221112

Installation and use of fuse virtual file system