mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-24 02:44:38 +01:00
aa12cea2cc
Although groff_mdoc(7) gives another impression, this is the ordering most widely used and also required by mdocml/mandoc. Reviewed by: ru Approved by: philip, ed (mentors)
76 lines
2.5 KiB
Groff
76 lines
2.5 KiB
Groff
.\" Copyright (c) 1997 David Nugent <davidn@blaze.net.au>
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, is permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice immediately at the beginning of the file, without modification,
|
|
.\" 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.
|
|
.\" 3. This work was done expressly for inclusion into FreeBSD. Other use
|
|
.\" is permitted provided this notation is included.
|
|
.\" 4. Absolutely no warranty of function or purpose is made by the author
|
|
.\" David Nugent.
|
|
.\" 5. Modifications may be freely made to this file providing the above
|
|
.\" conditions are met.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 2, 1997
|
|
.Dt _SECURE_PATH 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm _secure_path
|
|
.Nd determine if a file appears to be secure
|
|
.Sh LIBRARY
|
|
.Lb libutil
|
|
.Sh SYNOPSIS
|
|
.In sys/types.h
|
|
.In libutil.h
|
|
.Ft int
|
|
.Fn _secure_path "const char *path" "uid_t uid" "gid_t gid"
|
|
.Sh DESCRIPTION
|
|
This function does some basic security checking on a given path.
|
|
It is intended to be used by processes running with root privileges
|
|
in order to decide whether or not to trust the contents of a given
|
|
file.
|
|
It uses a method often used to detect system compromise.
|
|
.Pp
|
|
A file is considered
|
|
.Sq secure
|
|
if it meets the following conditions:
|
|
.Bl -enum
|
|
.It
|
|
The file exists, and is a regular file (not a symlink, device
|
|
special or named pipe, etc.),
|
|
.It
|
|
Is not world writable.
|
|
.It
|
|
Is owned by the given uid or uid 0, if uid is not -1,
|
|
.It
|
|
Is not group writable or it has group ownership by the given
|
|
gid, if gid is not -1.
|
|
.El
|
|
.Sh RETURN VALUES
|
|
This function returns zero if the file exists and may be
|
|
considered secure, -2 if the file does not exist, and
|
|
-1 otherwise to indicate a security failure.
|
|
The
|
|
.Xr syslog 3
|
|
function is used to log any failure of this function, including the
|
|
reason, at LOG_ERR priority.
|
|
.Sh SEE ALSO
|
|
.Xr lstat 2 ,
|
|
.Xr syslog 3
|
|
.Sh HISTORY
|
|
Code from which this function was derived was contributed to the
|
|
.Fx
|
|
project by Berkeley Software Design, Inc.
|
|
.Sh BUGS
|
|
The checks carried out are rudimentary and no attempt is made
|
|
to eliminate race conditions between use of this function and
|
|
access to the file referenced.
|