08-05-2005
Actually, most of the backup utilities, even big ones such as HP's Omniback do not support ACLs. Probably too much info will have to be maintained per file. I have a suggestion in this case: use the command on your system that will give out ACL info for files and redirect it to a file in the same directory. Then go ahead with the backup. This will also backup the file that has the ACL info. In the event of a restore, that file can be used to reassign ACLs to files.
In case of HP, the lsacl command can be used to provide input to chacl (which sets ACLs on files). I am sure that your filesystem will provide something similar.
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LEARN ABOUT CENTOS
acl_cmp
ACL_CMP(3) BSD Library Functions Manual ACL_CMP(3)
NAME
acl_cmp -- compare two ACLs
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
#include <sys/types.h>
#include <acl/libacl.h>
int
acl_cmp(acl_t acl1, acl_t acl2);
DESCRIPTION
The acl_cmp() function compares the ACLs pointed to by the arguments acl1 and acl2 for equality. The two ACLs are considered equal if for
each entry in acl1 there is an entry in acl2 with matching tag type, qualifier, and permissions, and vice versa.
RETURN VALUE
If successful, the acl_cmp() function returns 0 if the two ACLs acl1 and acl2 are equal, and 1 if they differ. Otherwise, the value -1 is
returned and the global variable errno is set to indicate the error.
ERRORS
If any of the following conditions occur, the acl_cmp() function returns -1 and sets errno to the corresponding value:
[EINVAL] The argument acl1 is not a valid pointer to an ACL.
The argument acl2 is not a valid pointer to an ACL.
STANDARDS
This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 ("POSIX.1e", aban-
doned).
SEE ALSO
acl(5)
AUTHOR
Written by Andreas Gruenbacher <a.gruenbacher@bestbits.at>.
Linux ACL March 23, 2002 Linux ACL