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Top Forums UNIX for Dummies Questions & Answers Inode: is it both unique and 'permanent'? Post 302512594 by dakke on Monday 11th of April 2011 03:39:24 AM
Old 04-11-2011
Inode: is it both unique and 'permanent'?

I try to understand the meaning of an inode. I wonder whether
  • an inode is unique (I'm pretty sure it is) and
  • whether it remains the same inode regardless of whatever happens to the file, dir or whatever?
I read somewhere that an inode stores info about the file, size... so changing the size might change the inode?

Btw, is there a difference in both features in different platforms? I'm on a mac, but would a linux system be much different?
 

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matchpathcon_checkmatches(3)				     SELinux API documentation				      matchpathcon_checkmatches(3)

NAME
matchpathcon_checkmatches, matchpathcon_filespec_add, matchpathcon_filespec_destroy, matchpathcon_filespec_eval - check and report whether any specification index has no matches with any inode. Maintenance and statistics on inode associations. SYNOPSIS
#include <selinux/selinux.h> void matchpathcon_checkmatches(char *str); int matchpathcon_filespec_add(ino_t ino, int specind, const char *file); void matchpathcon_filespec_destroy(void); void matchpathcon_filespec_eval(void); DESCRIPTION
matchpathcon_checkmatches checks whether any specification has no matches and reports them. The str argument is used as a prefix for any warning messages. matchpathcon_filespec_add maintains an association between an inode ino and a specification index specind, and checks whether a conflicting specification is already associated with the same inode (e.g. due to multiple hard links). If so, then it uses the latter of the two speci- fications based on their order in the file context configuration. Returns the specification index used or -1 on error. matchpathcon_filespec_destroy destroys any inode associations that have been added, e.g. to restart for a new filesystem. matchpathcon_filespec_eval displays statistics on the hash table usage for the inode associations. RETURN VALUE
Returns zero on success or -1 otherwise. SEE ALSO
selinux(8), matchpathcon(3), matchpathcon_index(3), freecon(3), setfilecon(3), setfscreatecon(3) sds@tycho.nsa.gov 21 November 2009 matchpathcon_checkmatches(3)
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