How to access inode information


 
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Top Forums UNIX for Advanced & Expert Users How to access inode information
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Old 02-06-2009
inode.c from the linux kernel is not a standalone program. In fact, most individual C files, kernel or not, are not standalone programs. inode.c outside the kernel won't work because kernel code needs to be executed inside the kernel and needs things from other C files to work.

What, precisely, do you think fiddling with inodes will help you do? What do you want howto's on? I'm suspecting there's some confusion on the topic here.

An inode is essentially a unique number given to each file inside a partition. This number is only useful outside the kernel for comparison purposes, i.e. to see if two different filenames are hardlinked.
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ff_vxfs(1M)															       ff_vxfs(1M)

NAME
ff_vxfs: ff - fast find: list file names and statistics for a VxFS file system SYNOPSIS
num] num] inode-list] num] file] prefix] special... DESCRIPTION
reads the inode list and directories of each special file, assuming it to be a VxFS file system, and prints inode data for files that match the selection criteria. Output consists of the pathname for each saved inode, plus any other file information requested using the print options below. Output fields are positional. The output is produced in inode order; fields are separated by tabs. The default line pro- duced by is: pathname inumber The pathname is preceded by a dot unless you specify the generic option. The maximum information displays is: pathname inumber size owner The num parameter in the options descriptions is a decimal number, where means more than num days, means less than num days, and num means exactly num days. A day is defined as a 24-hour period. prints summary information to standard error output in addition to the report sent to standard output. Options recognizes the following options: Select a file if the inode has been accessed in num days. Select a file if the inode has been changed in num days. Specify the VxFS file system type. Generate names for any inodes specified in the inode-list. Do not display the inode number after each pathname. Generate a list of all pathnames for files with more than one link. Select a file associated with the inode if it has been modified in num days. Select a file associated with an inode if it has been modified more recently than the specified file. Add the specified prefix to each pathname. The default prefix is dot Print only special files and files with set-user-ID mode (VxFS-specific option). Write the file size, in bytes, after each pathname. Write the owner's login name after each pathname. Echo the completed command line, but performs no other action. The command line is generated by incorporating the user specified options and other information derived from This option allows the user to verify the command line. Operands recognizes the following operand: special Name of a VxFS file system. EXAMPLES
List the pathnames and inumbers of all files in the file system Same as above, but suppress the printing of inumbers: List files on the same file system that have been modified in the last two days displaying the pathname, inumber, and owner's user name List all files on the same file system, including the pathname and inumber of each file, that were last accessed more than 30 days ago Find all pathnames associated with inodes and Execute the command on a VxFS file system FILES
Static information about the file systems. SEE ALSO
find(1), ff(1M), ncheck_vxfs(1M), fstab(4). ff_vxfs(1M)