91 lines
2.3 KiB
Groff
91 lines
2.3 KiB
Groff
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.\" Access Control Lists manual pages
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.\"
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.\" (C) 2002 Andreas Gruenbacher, <andreas.gruenbacher@gmail.com>
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual. If not, see
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.\" <http://www.gnu.org/licenses/>.
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.\"
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.Dd March 23, 2002
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.Dt ACL_CMP 3
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.Os "Linux ACL"
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.Sh NAME
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.Nm acl_cmp
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.Nd compare two ACLs
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.Sh LIBRARY
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Linux Access Control Lists library (libacl, \-lacl).
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.Sh SYNOPSIS
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.In sys/types.h
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.In acl/libacl.h
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.Ft int
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.Fn acl_cmp "acl_t acl1" "acl_t acl2"
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.Sh DESCRIPTION
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The
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.Fn acl_cmp
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function compares the ACLs pointed to by the arguments
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.Va acl1
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and
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.Va acl2
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for equality. The two ACLs are considered equal if for each entry in
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.Va acl1
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there is an entry in
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.Va acl2
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with matching tag type, qualifier, and permissions, and vice versa.
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.Sh RETURN VALUE
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If successful, the
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.Fn acl_cmp
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function returns
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.Li 0
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if the two ACLs
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.Va acl1
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and
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.Va acl2
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are equal, and
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.Li 1
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if they differ. Otherwise, the value
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.Li -1
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is returned and the global variable
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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If any of the following conditions occur, the
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.Fn acl_cmp
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function returns
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.Li -1
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and sets
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.Va errno
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to the corresponding value:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The argument
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.Va acl1
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is not a valid pointer to an ACL.
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.Pp
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The argument
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.Va acl2
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is not a valid pointer to an ACL.
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.El
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.Sh STANDARDS
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This is a non-portable, Linux specific extension to the ACL manipulation
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functions defined in IEEE Std 1003.1e draft 17 (\(lqPOSIX.1e\(rq, abandoned).
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.Sh SEE ALSO
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.Xr acl 5
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.Sh AUTHOR
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Written by
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.An "Andreas Gruenbacher" Aq andreas.gruenbacher@gmail.com .
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