172 lines
5.9 KiB
C
172 lines
5.9 KiB
C
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/*
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* Copyright (c) 1997-1998 Erez Zadok
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* Copyright (c) 1989 Jan-Simon Pendry
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* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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 THE REGENTS 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 THE REGENTS 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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* %W% (Berkeley) %G%
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*
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* $Id: hlfs.h,v 1.9 1993/09/13 15:11:00 ezk Exp $
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*
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* HLFSD was written at Columbia University Computer Science Department, by
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* Erez Zadok <ezk@cs.columbia.edu> and Alexander Dupuy <dupuy@cs.columbia.edu>
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* It is being distributed under the same terms and conditions as amd does.
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*/
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#ifndef _HLFSD_HLFS_H
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#define _HLFSD_HLFS_H
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/*
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* MACROS AND CONSTANTS:
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*/
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#define HLFSD_VERSION "hlfsd 1.1 (March 4, 1997-1998)"
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#define PERS_SPOOLMODE 0755
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#define OPEN_SPOOLMODE 01777
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#define DOTSTRING "."
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/*
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* ROOTID and SLINKID are the fixed "faked" node IDs (inodes) for
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* the '.' (also '..') and the one symlink within the hlfs.
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* They must always be unique, and should never match what a UID
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* could be.
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* They used to be -1 and -2, respectively.
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*
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* I used to cast these to (uid_t) but it failed to compile
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* with /opt/SUNWspro/bin/cc because uid_t is long, while struct fattr's
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* uid field is u_int. Then it failed to compile on some linux systems
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* which define uid_t to be unsigned short, so I used the lowest common
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* size which is unsigned short.
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*/
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#ifdef EXPERIMENTAL_UID_SIZE
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#define UID_SHIFT 30
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# define ROOTID ((1 << UID_SHIFT) - 1)
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# define SLINKID ((1 << UID_SHIFT) - 2)
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# define INVALIDID ((1 << UID_SHIFT) - 3)
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#else /* not EXPERIMENTAL_UID_SIZE */
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/*
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* XXX: this will cause problems to systems with UIDs greater than
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* MAX_UNSIGNED_SHORT-3.
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*/
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# define ROOTID (((unsigned short) ~0) - 1)
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# define SLINKID (((unsigned short) ~0) - 2)
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# define INVALIDID (((unsigned short) ~0) - 3)
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#endif /* not EXPERIMENTAL_UID_SIZE */
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#define DOTCOOKIE 1
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#define DOTDOTCOOKIE 2
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#define SLINKCOOKIE 3
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#define ALT_SPOOLDIR "/var/hlfs" /* symlink to use if others fail */
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#define HOME_SUBDIR ".hlfsdir" /* dirname in user's home dir */
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#define DEFAULT_DIRNAME "/hlfs/home"
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#define DEFAULT_INTERVAL 900 /* secs b/t re-reads of the password maps */
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#define DEFAULT_CACHE_INTERVAL 300 /* secs during which assume a link is up */
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#define DEFAULT_HLFS_GROUP "hlfs" /* Group name for special hlfs_gid */
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#define PROGNAMESZ (MAXHOSTNAMELEN - 5)
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#ifdef HAVE_SYSLOG
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# define DEFAULT_LOGFILE "syslog"
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#else /* not HAVE)_SYSLOG */
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# define DEFAULT_LOGFILE 0
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#endif /* not HAVE)_SYSLOG */
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#define ERRM ": %m"
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#define fatalerror(str) \
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(fatal (strcat (strnsave ((str), strlen ((str)) + sizeof (ERRM) - 1), ERRM)))
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/*
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* TYPDEFS:
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*/
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typedef struct uid2home_t uid2home_t;
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typedef struct username2uid_t username2uid_t;
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/*
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* STRUCTURES:
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*/
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struct uid2home_t {
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uid_t uid; /* XXX: with or without UID_OFFSET? */
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pid_t child;
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char *home; /* really allocated */
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char *uname; /* an xref ptr to username2uid_t->username */
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u_long last_access_time;
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int last_status; /* 0=used $HOME/.hlfsspool; !0=used alt dir */
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};
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struct username2uid_t {
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char *username; /* really allocated */
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uid_t uid; /* XXX: with or without UID_OFFSET? */
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char *home; /* an xref ptr to uid2home_t->home */
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};
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/*
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* EXTERNALS:
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*/
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extern RETSIGTYPE cleanup(int);
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extern RETSIGTYPE interlock(int);
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extern SVCXPRT *nfs_program_2_transp; /* For quick_reply() */
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extern SVCXPRT *nfsxprt;
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extern char *alt_spooldir;
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extern char *home_subdir;
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extern char *homedir(int);
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extern char *mailbox(int, char *);
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extern char *passwdfile;
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extern char *slinkname;
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extern char mboxfile[];
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extern gid_t hlfs_gid;
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extern int cache_interval;
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extern int noverify;
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extern int serverpid;
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extern int sys_nerr;
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extern int untab_index(char *username);
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extern am_nfs_fh *root_fhp;
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extern am_nfs_fh root;
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extern nfstime startup;
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extern uid2home_t *plt_search(int);
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extern username2uid_t *untab; /* user name table */
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extern void fatal(char *);
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extern void plt_init(void);
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extern void hlfsd_init_filehandles(void);
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#if defined(DEBUG) || defined(DEBUG_PRINT)
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extern void plt_dump(uid2home_t *, pid_t);
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extern void plt_print(int);
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#endif /* defined(DEBUG) || defined(DEBUG_PRINT) */
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#endif /* _HLFSD_HLFS_H */
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