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Full Discussion: Process existence or/and permission
Top Forums Shell Programming and Scripting Process existence or/and permission Post 302999927 by bakunin on Friday 30th of June 2017 05:24:58 AM
Old 06-30-2017
To me this looks like the result of /proc having rather weird permissions. What does

Code:
ls -ld /proc

show? Because if it is flagged "0" (oct) for "others" you can't even see directory entries in there except for the ones you are directly permitted to (by their own permissions).

I just checked with a system running kernel "3.0.101-97-default" (according to uname, some old SLES, i believe) and the output was

Code:
# ls -ld /proc
dr-xr-xr-x 182 root root 0 Jun 27 20:03 /proc

So users are able to see the directory entries in there, even if they are not permitted to access them.

I hope this helps.

bakunin
 

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LEARN ABOUT CENTOS

tapset::nfs_proc

tapset::nfs_proc(3stap) 												   tapset::nfs_proc(3stap)

NAME

       tapset::nfs_proc - systemtap nfs_proc tapset

DESCRIPTION

       nfs.proc.lookup
	      NFS client opens/searches a file on server

	       See probe::nfs.proc.lookup(3stap)
	       for details.

       nfs.proc.read
	      NFS client synchronously reads file from server

	       See probe::nfs.proc.read(3stap)
	       for details.

       nfs.proc.write
	      NFS client synchronously writes file to server

	       See probe::nfs.proc.write(3stap)
	       for details.

       nfs.proc.commit
	      NFS client committing data on server

	       See probe::nfs.proc.commit(3stap)
	       for details.

       nfs.proc.read_setup
	      NFS client setting up a read RPC task

	       See probe::nfs.proc.read_setup(3stap)
	       for details.

       nfs.proc.read_done
	      NFS client response to a read RPC task

	       See probe::nfs.proc.read_done(3stap)
	       for details.

       nfs.proc.write_setup
	      NFS client setting up a write RPC task

	       See probe::nfs.proc.write_setup(3stap)
	       for details.

       nfs.proc.write_done
	      NFS client response to a write RPC task

	       See probe::nfs.proc.write_done(3stap)
	       for details.

       nfs.proc.commit_setup
	      NFS client setting up a commit RPC task

	       See probe::nfs.proc.commit_setup(3stap)
	       for details.

       nfs.proc.commit_done
	      NFS client response to a commit RPC task

	       See probe::nfs.proc.commit_done(3stap)
	       for details.

       nfs.proc.open
	      NFS client allocates file read/write context information

	       See probe::nfs.proc.open(3stap)
	       for details.

       nfs.proc.release
	       NFS client releases file read/write context information

	       See probe::nfs.proc.release(3stap)
	       for details.

       nfs.proc.handle_exception
	      NFS client handling an NFSv4 exception

	       See probe::nfs.proc.handle_exception(3stap)
	       for details.

       nfs.proc.create
	      NFS client creating file on server

	       See probe::nfs.proc.create(3stap)
	       for details.

       nfs.proc.remove
	      NFS client removes a file on server

	       See probe::nfs.proc.remove(3stap)
	       for details.

       nfs.proc.rename
	      NFS client renames a file on server

	       See probe::nfs.proc.rename(3stap)
	       for details.

SEE ALSO

	  probe::nfs.proc.lookup(3stap),      probe::nfs.proc.read(3stap),	probe::nfs.proc.write(3stap),	  probe::nfs.proc.commit(3stap),
       probe::nfs.proc.read_setup(3stap),	       probe::nfs.proc.read_done(3stap),	       probe::nfs.proc.write_setup(3stap),
       probe::nfs.proc.write_done(3stap),  probe::nfs.proc.commit_setup(3stap),  probe::nfs.proc.commit_done(3stap),  probe::nfs.proc.open(3stap),
	probe::nfs.proc.release(3stap),  probe::nfs.proc.handle_exception(3stap),  probe::nfs.proc.create(3stap),  probe::nfs.proc.remove(3stap),
       probe::nfs.proc.rename(3stap),  stap(1), stapprobes(3stap)

IBM
									---						   tapset::nfs_proc(3stap)
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