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Full Discussion: absolute path
Top Forums Programming absolute path Post 302120289 by jim mcnamara on Tuesday 5th of June 2007 02:36:22 PM
Old 06-05-2007
You mean that you're given a filename like "foo.txt" and you want to find it in the filesystem to see that it's in a given path, example: /somepath/to/myfiles/foo.txt?

stat the file, get the inode number of the file, call popen with
ls -i /somepath/to/myfiles/foo.txt
and check the inode you get back. It has to match the inode number you started with.

The other case is nasty - when you have no idea where the file is located.
The reason is that the one unique identifier for a file in a given filesystem is the inode.
It can be duplicated in all of the other filesystems mounted on the machine.
So you could have several foo.txt files with the same inode number.

You can try using ftw() or nftw(), or call find from a popen() call.
It is not efficient to use either of these from the root directory /, plus it is possible to find more than one matching filename/inode.

The find syntax is:
Code:
find / -type f  -name foo.txt -inode <inode number>

Edit: note that st_dev plus st_inode give a unique identifier for a file.
You have to call ftw(), as there is no way to identify an st_dev value for find to use.
Last edited by jim mcnamara; 06-05-2007 at 05:17 PM..
 

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LEARN ABOUT SUSE

setquota

SETQUOTA(8)						      System Manager's Manual						       SETQUOTA(8)

NAME

       setquota - set disk quotas

SYNOPSIS

       setquota [ -rm ] [ -u | -g ] [ -F quotaformat ] name block-softlimit block-hardlimit inode-softlimit inode-hardlimit -a | filesystem...

       setquota [ -rm ] [ -u | -g ] [ -F quotaformat ] [ -p protoname ] name -a | filesystem...

       setquota -b [ -rm ] [ -u | -g ] [ -F quotaformat ] -a | filesystem...

       setquota -t [ -m ] [ -u | -g ] [ -F quotaformat ] block-grace inode-grace -a | filesystem...

       setquota -T [ -m ] [ -u | -g ] [ -F quotaformat ] name block-grace inode-grace -a | filesystem...

DESCRIPTION

       setquota  is  a command line quota editor.  The filesystem, user/group name and new quotas for this filesystem can be specified on the com-
       mand line. Note that if a number is given in the place of a user/group name it is treated as an UID/GID.

       -r, --remote
	      Edit also remote quota use rpc.rquotad on remote server to set quota. This option is available only if  quota  tools  were  compiled
	      with enabled support for setting quotas over RPC.

       -m, --no-mixed-pathnames
	      Currently,  pathnames  of  NFSv4	mountpoints  are sent without leading slash in the path.  rpc.rquotad uses this to recognize NFSv4
	      mounts and properly prepend pseudoroot of NFS filesystem to the path. If you specify this option, setquota will  always  send  paths
	      with a trailing slash. This can be useful for legacy reasons but be aware that quota over RPC will stop working if you are using new
	      rpc.rquotad.

       -F, --format=quotaformat
	      Perform setting for specified format (ie. don't perform format autodetection).  Possible format names are: vfsold (version 1 quota),
	      vfsv0 (version 2 quota), rpc (quota over NFS), xfs (quota on XFS filesystem)

       -u, --user
	      Set user quotas for named user. This is the default.

       -g, --group
	      Set group quotas for named group.

       -p, --prototype=protoname
	      Use quota settings of user or group protoname to set the quota for the named user or group.

       -b, --batch
	      Read  information  to  set from stdin (input format is name block-softlimit block-hardlimit inode-softlimit inode-hardlimit ). Empty
	      lines and lines starting with # are ignored.

       -c, --continue-batch
	      If parsing of an input line in batch mode fails, continue with processing the next line.

       -t, --edit-period
	      Set grace times for users/groups. Times block-grace and inode-grace are specified in seconds.

       -T, --edit-times
	      Alter times for individual user/group when softlimit is enforced. Times block-grace and inode-grace are specified in seconds or  can
	      be string 'unset'.

       -a, --all
	      Go through all filesystems with quota in /etc/mtab and perform setting.

       To disable a quota, set the coresponding parameter to 0. To change quotas for several filesystems, invoke once for each filesystem.

       Only the super-user may edit quotas.

FILES

       aquota.user or aquota.group
			   quota file at the filesystem root (version 2 quota, non-XFS filesystems)
       quota.user or quota.group
			   quota file at the filesystem root (version 1 quota, non-XFS filesystems)
       /etc/mtab	   mounted filesystem table

SEE ALSO

       edquota(8), quota(1), quotactl(2), quotacheck(8), quotaon(8), repquota(8)

																       SETQUOTA(8)
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