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author | dd <dd@FreeBSD.org> | 2001-06-24 23:54:46 +0000 |
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committer | dd <dd@FreeBSD.org> | 2001-06-24 23:54:46 +0000 |
commit | 4d18dfe3ca1fef66131bb8ccd9a55771c0542f7f (patch) | |
tree | beba0c2dba62cf9e1a2ef8d01b0dcc299ee82438 /lib/libc/posix1e/extattr.3 | |
parent | 7894e59b7f217dd493250aec7b5da6dd7f2cf1c4 (diff) | |
download | FreeBSD-src-4d18dfe3ca1fef66131bb8ccd9a55771c0542f7f.zip FreeBSD-src-4d18dfe3ca1fef66131bb8ccd9a55771c0542f7f.tar.gz |
Add a manual page for extattr_string_to_namespace and
extattr_namespace_to_string.
Reviewed by: rwatson
Diffstat (limited to 'lib/libc/posix1e/extattr.3')
-rw-r--r-- | lib/libc/posix1e/extattr.3 | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/libc/posix1e/extattr.3 b/lib/libc/posix1e/extattr.3 new file mode 100644 index 0000000..b1f239c --- /dev/null +++ b/lib/libc/posix1e/extattr.3 @@ -0,0 +1,91 @@ +.\" +.\" Copyright (c) 2001 Dima Dorfman <dd@FreeBSD.org> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd June 24, 2001 +.Dt EXTATTR 3 +.Os +.Sh NAME +.Nm extattr_namespace_to_string , +.Nm extattr_string_to_namespace +.Nd convert an extended attribute namespace identifier to a string and +vice versa +.Sh LIBRARY +.Lb libutil +.Sh SYNOPSIS +.Fd #include <sys/extattr.h> +.Fd #include <libutil.h> +.Ft int +.Fn extattr_namespace_to_string "int attrnamespace" "char **string" +.Ft int +.Fn extattr_string_to_namespace "const char *string" "int *attrnamespace" +.Sh DESCRIPTION +The +.Fn extattr_namespace_to_string +function converts a VFS extended attribute identifier to a human-readable +string; +the +.Fn extattr_string_to_namespace +function undoes the aforementioned operation, +and converts a human-readable string representing a namespace to a +namespace identifier. +Although a filesystem may implement arbitrary namespaces, +these functions only support the +.Dv EXTATTR_NAMESPACE_USER +.Pq Dq user +and +.Dv EXTATTR_NAMESPACE_SYSTEM +.Pq Dq system +namespaces, +which are defined in +.Xr extattr 9 . +.Pp +These functions are meant to be used in error reporting and other +interactive tasks. +For example, +instead of printing the integer identifying an extended attribute in +an error message, +a program might use +.Fn extattr_namespace_to_string +to obtain a human-readable representation. +Likewise, +instead of requiring a user to enter the integer representing a namespace, +an interactive program might ask for a name and use +.Fn extattr_string_to_namespace +to get the desired identifier. +.Sh SEE ALSO +.Xr extattr_get_file 2 , +.Xr extattr_set_file 2 , +.Xr getextattr 8 , +.Xr setextattr 8 , +.Xr extattr 9 +.Sh HISTORY +Extended attribute support was developed as part of the +.Tn TrustedBSD +Project, and introduced in +.Fx 5.0 . +It was developed to support security extensions requiring additional labels +to be associated with each file or directory. |