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.\" Access Control Lists manual pages
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.\"
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.\" (C) 2002 Andreas Gruenbacher, <a.gruenbacher@bestbits.at>
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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_FROM_MODE 3
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.Os "Linux ACL"
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.Sh NAME
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.Nm acl_from_mode
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.Nd create an ACL from file permission bits
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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 acl_t
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.Fn acl_from_mode "mode_t mode"
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.Sh DESCRIPTION
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The
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.Fn acl_from_mode
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function creates a minimal ACL that contains the three entries with tag
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types ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, with permissions
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corresponding to the owner, group, and other permission bits of its
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argument
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.Va mode .
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.Sh RETURN VALUE
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On success, this function returns a pointer to the
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working storage. On error, a value of
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.Li (acl_t)NULL
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is returned, and
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.Va errno
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is set appropriately.
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.Sh ERRORS
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If any of the following conditions occur, the
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.Fn acl_from_mode
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function returns a value of
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.Li (acl_t)NULL
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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 ENOMEM
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The ACL working storage requires more memory than is allowed by the
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hardware or system-imposed memory management constraints.
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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_equiv_mode 3 ,
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.Xr acl_get_file 3 ,
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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 a.gruenbacher@bestbits.at .
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