573 lines
12 KiB
C
573 lines
12 KiB
C
/* statsb.c
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System dependent routines for uustat.
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Copyright (C) 1992 Ian Lance Taylor
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This file is part of the Taylor UUCP package.
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This program is free software; 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 the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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The author of the program may be contacted at ian@airs.com or
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c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
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*/
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#include "uucp.h"
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#if USE_RCS_ID
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const char statsb_rcsid[] = "$Id: statsb.c,v 1.1 1993/08/04 19:33:06 jtc Exp $";
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#endif
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#include "uudefs.h"
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#include "uuconf.h"
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#include "sysdep.h"
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#include "system.h"
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#include <errno.h>
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#else
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#if HAVE_SYS_FILE_H
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#include <sys/file.h>
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#endif
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#endif
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#ifndef O_RDONLY
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#define O_RDONLY 0
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#define O_WRONLY 1
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#define O_RDWR 2
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#endif
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#ifndef O_NOCTTY
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#define O_NOCTTY 0
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#endif
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#if HAVE_OPENDIR
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#if HAVE_DIRENT_H
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#include <dirent.h>
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#else /* ! HAVE_DIRENT_H */
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#include <sys/dir.h>
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#define dirent direct
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#endif /* ! HAVE_DIRENT_H */
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#endif /* HAVE_OPENDIR */
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#if HAVE_TIME_H
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#include <time.h>
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#endif
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#if HAVE_UTIME_H
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#include <utime.h>
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#endif
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/* Local functions. */
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static int ussettime P((const char *z, time_t inow));
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static boolean fskill_or_rejuv P((pointer puuconf, const char *zid,
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boolean fkill));
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/* See whether the user is permitted to kill arbitrary jobs. This is
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true only for root and uucp. We check for uucp by seeing if the
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real user ID and the effective user ID are the same; this works
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because we should be suid to uucp, so our effective user ID will
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always be uucp while our real user ID will be whoever ran the
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program. */
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boolean
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fsysdep_privileged ()
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{
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uid_t iuid;
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iuid = getuid ();
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return iuid == 0 || iuid == geteuid ();
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}
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/* Set file access time to the present. On many systems this could be
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done by passing NULL to utime, but on some that doesn't work. This
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routine is not time critical, so we never rely on NULL. */
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static int
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ussettime(z, inow)
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const char *z;
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time_t inow;
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{
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#if HAVE_UTIME_H
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struct utimbuf s;
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s.actime = inow;
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s.modtime = inow;
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return utime ((char *) z, &s);
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#else
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time_t ai[2];
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ai[0] = inow;
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ai[1] = inow;
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return utime ((char *) z, ai);
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#endif
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}
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/* Kill a job, given the jobid. */
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boolean
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fsysdep_kill_job (puuconf, zid)
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pointer puuconf;
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const char *zid;
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{
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return fskill_or_rejuv (puuconf, zid, TRUE);
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}
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/* Rejuvenate a job, given the jobid. */
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boolean
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fsysdep_rejuvenate_job (puuconf, zid)
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pointer puuconf;
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const char *zid;
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{
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return fskill_or_rejuv (puuconf, zid, FALSE);
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}
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/* Kill or rejuvenate a job, given the jobid. */
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static boolean
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fskill_or_rejuv (puuconf, zid, fkill)
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pointer puuconf;
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const char *zid;
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boolean fkill;
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{
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char *zfile;
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char *zsys;
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char bgrade;
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time_t inow = 0;
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int iuuconf;
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struct uuconf_system ssys;
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FILE *e;
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boolean fret;
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char *zline;
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size_t cline;
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int isys;
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zfile = zsjobid_to_file (zid, &zsys, &bgrade);
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if (zfile == NULL)
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return FALSE;
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if (! fkill)
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inow = time ((time_t *) NULL);
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iuuconf = uuconf_system_info (puuconf, zsys, &ssys);
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if (iuuconf == UUCONF_NOT_FOUND)
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{
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if (! funknown_system (puuconf, zsys, &ssys))
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{
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ulog (LOG_ERROR, "%s: Bad job id", zid);
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ubuffree (zfile);
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ubuffree (zsys);
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return FALSE;
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}
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}
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else if (iuuconf != UUCONF_SUCCESS)
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{
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ulog_uuconf (LOG_ERROR, puuconf, iuuconf);
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ubuffree (zfile);
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ubuffree (zsys);
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return FALSE;
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}
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e = fopen (zfile, "r");
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if (e == NULL)
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{
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if (errno == ENOENT)
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ulog (LOG_ERROR, "%s: Job not found", zid);
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else
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ulog (LOG_ERROR, "fopen (%s): %s", zfile, strerror (errno));
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(void) uuconf_system_free (puuconf, &ssys);
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ubuffree (zfile);
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ubuffree (zsys);
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return FALSE;
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}
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/* Now we have to read through the file to identify any temporary
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files. */
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fret = TRUE;
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zline = NULL;
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cline = 0;
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while (getline (&zline, &cline, e) > 0)
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{
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struct scmd s;
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if (! fparse_cmd (zline, &s))
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{
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ulog (LOG_ERROR, "Bad line in command file %s", zfile);
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fret = FALSE;
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continue;
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}
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/* You are only permitted to delete a job if you submitted it or
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if you are root or uucp. */
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if (strcmp (s.zuser, zsysdep_login_name ()) != 0
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&& ! fsysdep_privileged ())
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{
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ulog (LOG_ERROR, "%s: Not submitted by you", zid);
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xfree ((pointer) zline);
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(void) fclose (e);
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(void) uuconf_system_free (puuconf, &ssys);
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ubuffree (zfile);
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ubuffree (zsys);
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return FALSE;
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}
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if (s.bcmd == 'S' || s.bcmd == 'E')
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{
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char *ztemp;
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ztemp = zsfind_file (s.ztemp, ssys.uuconf_zname, bgrade);
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if (ztemp == NULL)
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fret = FALSE;
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else
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{
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if (fkill)
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isys = remove (ztemp);
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else
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isys = ussettime (ztemp, inow);
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if (isys != 0 && errno != ENOENT)
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{
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ulog (LOG_ERROR, "%s (%s): %s",
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fkill ? "remove" : "utime", ztemp,
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strerror (errno));
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fret = FALSE;
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}
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ubuffree (ztemp);
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}
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}
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}
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xfree ((pointer) zline);
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(void) fclose (e);
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(void) uuconf_system_free (puuconf, &ssys);
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ubuffree (zsys);
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if (fkill)
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isys = remove (zfile);
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else
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isys = ussettime (zfile, inow);
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if (isys != 0 && errno != ENOENT)
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{
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ulog (LOG_ERROR, "%s (%s): %s", fkill ? "remove" : "utime",
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zfile, strerror (errno));
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fret = FALSE;
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}
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ubuffree (zfile);
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return fret;
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}
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/* Get the time a work job was queued. */
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long
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ixsysdep_work_time (qsys, pseq)
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const struct uuconf_system *qsys;
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pointer pseq;
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{
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char *zjobid, *zfile;
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long iret;
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zjobid = zsysdep_jobid (qsys, pseq);
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zfile = zsjobid_to_file (zjobid, (char **) NULL, (char *) NULL);
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if (zfile == NULL)
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return 0;
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ubuffree (zjobid);
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iret = ixsysdep_file_time (zfile);
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ubuffree (zfile);
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return iret;
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}
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/* Get the time a file was created (actually, the time it was last
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modified). */
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long
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ixsysdep_file_time (zfile)
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const char *zfile;
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{
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struct stat s;
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if (stat ((char *) zfile, &s) < 0)
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{
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if (errno != ENOENT)
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ulog (LOG_ERROR, "stat (%s): %s", zfile, strerror (errno));
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return ixsysdep_time ((long *) NULL);
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}
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return (long) s.st_mtime;
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}
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/* Start getting the status files. */
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boolean
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fsysdep_all_status_init (phold)
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pointer *phold;
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{
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DIR *qdir;
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qdir = opendir ((char *) ".Status");
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if (qdir == NULL)
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{
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ulog (LOG_ERROR, "opendir (.Status): %s", strerror (errno));
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return FALSE;
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}
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*phold = (pointer) qdir;
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return TRUE;
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}
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/* Get the next status file. */
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char *
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zsysdep_all_status (phold, pferr, qstat)
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pointer phold;
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boolean *pferr;
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struct sstatus *qstat;
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{
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DIR *qdir = (DIR *) phold;
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struct dirent *qentry;
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while (TRUE)
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{
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errno = 0;
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qentry = readdir (qdir);
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if (qentry == NULL)
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{
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if (errno == 0)
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*pferr = FALSE;
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else
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{
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ulog (LOG_ERROR, "readdir: %s", strerror (errno));
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*pferr = TRUE;
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}
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return NULL;
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}
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if (qentry->d_name[0] != '.')
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{
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struct uuconf_system ssys;
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/* Hack seriously; fsysdep_get_status only looks at the
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zname element of the qsys argument, so if we fake that we
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can read the status file. This should really be done
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differently. */
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ssys.uuconf_zname = qentry->d_name;
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if (fsysdep_get_status (&ssys, qstat, (boolean *) NULL))
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return zbufcpy (qentry->d_name);
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/* If fsysdep_get_status fails, it will output an error
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message. We just continue with the next entry, so that
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most of the status files will be displayed. */
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}
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}
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}
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/* Finish getting the status file. */
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void
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usysdep_all_status_free (phold)
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pointer phold;
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{
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DIR *qdir = (DIR *) phold;
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(void) closedir (qdir);
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}
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/* Get the status of all processes holding lock files. We do this by
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invoking ps after we've figured out the process entries to use. */
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boolean
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fsysdep_lock_status ()
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{
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DIR *qdir;
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struct dirent *qentry;
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int calc;
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int *pai;
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int cgot;
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int aidescs[3];
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char *zcopy, *ztok;
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int cargs, iarg;
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char **pazargs;
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qdir = opendir ((char *) zSlockdir);
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if (qdir == NULL)
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{
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ulog (LOG_ERROR, "opendir (%s): %s", zSlockdir, strerror (errno));
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return FALSE;
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}
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/* We look for entries that start with "LCK.." and ignore everything
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else. This won't find all possible lock files, but it should
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find all the locks on terminals and systems. */
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calc = 0;
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pai = NULL;
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cgot = 0;
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while ((qentry = readdir (qdir)) != NULL)
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{
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char *zname;
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int o;
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#if HAVE_V2_LOCKFILES
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int i;
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#else
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char ab[12];
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#endif
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int cread;
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int ierr;
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int ipid;
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if (strncmp (qentry->d_name, "LCK..", sizeof "LCK.." - 1) != 0)
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continue;
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zname = zsysdep_in_dir (zSlockdir, qentry->d_name);
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o = open ((char *) zname, O_RDONLY | O_NOCTTY, 0);
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if (o < 0)
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{
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if (errno != ENOENT)
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ulog (LOG_ERROR, "open (%s): %s", zname, strerror (errno));
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ubuffree (zname);
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continue;
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}
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#if HAVE_V2_LOCKFILES
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cread = read (o, &i, sizeof i);
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#else
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cread = read (o, ab, sizeof ab - 1);
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#endif
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ierr = errno;
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(void) close (o);
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if (cread < 0)
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{
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ulog (LOG_ERROR, "read %s: %s", zname, strerror (ierr));
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ubuffree (zname);
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continue;
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}
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ubuffree (zname);
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#if HAVE_V2_LOCKFILES
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ipid = i;
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#else
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ab[cread] = '\0';
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ipid = strtol (ab, (char **) NULL, 10);
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#endif
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printf ("%s: %d\n", qentry->d_name, ipid);
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if (cgot >= calc)
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{
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calc += 10;
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pai = (int *) xrealloc ((pointer) pai, calc * sizeof (int));
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}
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pai[cgot] = ipid;
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++cgot;
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}
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if (cgot == 0)
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return TRUE;
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aidescs[0] = SPAWN_NULL;
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aidescs[1] = 1;
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aidescs[2] = 2;
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/* Parse PS_PROGRAM into an array of arguments. */
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zcopy = zbufcpy (PS_PROGRAM);
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cargs = 0;
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for (ztok = strtok (zcopy, " \t");
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ztok != NULL;
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ztok = strtok ((char *) NULL, " \t"))
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++cargs;
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pazargs = (char **) xmalloc ((cargs + 1) * sizeof (char *));
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memcpy (zcopy, PS_PROGRAM, sizeof PS_PROGRAM);
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for (ztok = strtok (zcopy, " \t"), iarg = 0;
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ztok != NULL;
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ztok = strtok ((char *) NULL, " \t"), ++iarg)
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pazargs[iarg] = ztok;
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pazargs[iarg] = NULL;
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#if ! HAVE_PS_MULTIPLE
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/* We have to invoke ps multiple times. */
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{
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int i;
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char *zlast, *zset;
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zlast = pazargs[cargs - 1];
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zset = zbufalc (strlen (zlast) + 20);
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for (i = 0; i < cgot; i++)
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{
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pid_t ipid;
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sprintf (zset, "%s%d", zlast, pai[i]);
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pazargs[cargs - 1] = zset;
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ipid = ixsspawn ((const char **) pazargs, aidescs, FALSE, FALSE,
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(const char *) NULL, FALSE, TRUE,
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(const char *) NULL, (const char *) NULL,
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(const char *) NULL);
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if (ipid < 0)
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ulog (LOG_ERROR, "ixsspawn: %s", strerror (errno));
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else
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(void) ixswait ((unsigned long) ipid, PS_PROGRAM);
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}
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ubuffree (zset);
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}
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#else
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{
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char *zlast;
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int i;
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pid_t ipid;
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zlast = zbufalc (strlen (pazargs[cargs - 1]) + cgot * 20 + 1);
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strcpy (zlast, pazargs[cargs - 1]);
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for (i = 0; i < cgot; i++)
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{
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char ab[20];
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sprintf (ab, "%d", pai[i]);
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strcat (zlast, ab);
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if (i + 1 < cgot)
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strcat (zlast, ",");
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}
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pazargs[cargs - 1] = zlast;
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ipid = ixsspawn ((const char **) pazargs, aidescs, FALSE, FALSE,
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(const char *) NULL, FALSE, TRUE,
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(const char *) NULL, (const char *) NULL,
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(const char *) NULL);
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if (ipid < 0)
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ulog (LOG_ERROR, "ixsspawn: %s", strerror (errno));
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else
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(void) ixswait ((unsigned long) ipid, PS_PROGRAM);
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ubuffree (zlast);
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}
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#endif
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ubuffree (zcopy);
|
||
xfree ((pointer) pazargs);
|
||
|
||
return TRUE;
|
||
}
|