75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/*
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* Copyright 1989 - 1991, Julianne Frances Haugh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#ident "$Id$"
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#include <pwd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "prototypes.h"
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#include "defines.h"
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#define BAD_SUBROOT2 "invalid root `%s' for user `%s'\n"
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#define NO_SUBROOT2 "no subsystem root `%s' for user `%s'\n"
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/*
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* subsystem - change to subsystem root
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*
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* A subsystem login is indicated by the presense of a "*" as
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* the first character of the login shell. The given home
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* directory will be used as the root of a new filesystem which
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* the user is actually logged into.
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*/
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void subsystem (const struct passwd *pw)
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{
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/*
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* The new root directory must begin with a "/" character.
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*/
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if (pw->pw_dir[0] != '/') {
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printf (_("Invalid root directory '%s'\n"), pw->pw_dir);
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SYSLOG ((LOG_WARN, BAD_SUBROOT2, pw->pw_dir, pw->pw_name));
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closelog ();
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exit (1);
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}
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/*
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* The directory must be accessible and the current process
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* must be able to change into it.
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*/
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if (chdir (pw->pw_dir) || chroot (pw->pw_dir)) {
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printf (_("Can't change root directory to '%s'\n"),
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pw->pw_dir);
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SYSLOG ((LOG_WARN, NO_SUBROOT2, pw->pw_dir, pw->pw_name));
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closelog ();
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exit (1);
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}
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}
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