diff options
Diffstat (limited to 'usr.sbin/sup/lib/run.c')
| -rw-r--r-- | usr.sbin/sup/lib/run.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/usr.sbin/sup/lib/run.c b/usr.sbin/sup/lib/run.c deleted file mode 100644 index 0e9a581..0000000 --- a/usr.sbin/sup/lib/run.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Copyright (c) 1991 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie the rights - * to redistribute these changes. - */ -/* run, runv, runp, runvp -- execute process and wait for it to exit - * - * Usage: - * i = run (file, arg1, arg2, ..., argn, 0); - * i = runv (file, arglist); - * i = runp (file, arg1, arg2, ..., argn, 0); - * i = runvp (file, arglist); - * - * Run, runv, runp and runvp have argument lists exactly like the - * corresponding routines, execl, execv, execlp, execvp. The run - * routines perform a fork, then: - * IN THE NEW PROCESS, an execl[p] or execv[p] is performed with the - * specified arguments. The process returns with a -1 code if the - * exec was not successful. - * IN THE PARENT PROCESS, the signals SIGQUIT and SIGINT are disabled, - * the process waits until the newly forked process exits, the - * signals are restored to their original status, and the return - * status of the process is analyzed. - * All run routines return: -1 if the exec failed or if the child was - * terminated abnormally; otherwise, the exit code of the child is - * returned. - * - ********************************************************************** - * HISTORY - * $Log: run.c,v $ - * Revision 1.1.1.1 1995/12/26 04:54:47 peter - * Import the unmodified version of the sup that we are using. - * The heritage of this version is not clear. It appears to be NetBSD - * derived from some time ago. - * - * Revision 1.1.1.1 1993/08/21 00:46:33 jkh - * Current sup with compression support. - * - * Revision 1.1.1.1 1993/05/21 14:52:17 cgd - * initial import of CMU's SUP to NetBSD - * - * Revision 1.1 89/10/14 19:53:39 rvb - * Initial revision - * - * Revision 1.2 89/08/03 14:36:46 mja - * Update run() and runp() to use <varargs.h>. - * [89/04/19 mja] - * - * 23-Sep-86 Glenn Marcy (gm0w) at Carnegie-Mellon University - * Merged old runv and runvp modules. - * - * 22-Nov-85 Glenn Marcy (gm0w) at Carnegie-Mellon University - * Added check and kill if child process was stopped. - * - * 30-Apr-85 Steven Shafer (sas) at Carnegie-Mellon University - * Adapted for 4.2 BSD UNIX: Conforms to new signals and wait. - * - * 15-July-82 Mike Accetta (mja) and Neal Friedman (naf) - * at Carnegie-Mellon University - * Added a return(-1) if vfork fails. This should only happen - * if there are no more processes available. - * - * 28-Jan-80 Steven Shafer (sas) at Carnegie-Mellon University - * Added setuid and setgid for system programs' use. - * - * 21-Jan-80 Steven Shafer (sas) at Carnegie-Mellon University - * Changed fork to vfork. - * - * 20-Nov-79 Steven Shafer (sas) at Carnegie-Mellon University - * Created for VAX. The proper way to fork-and-execute a system - * program is now by "runvp" or "runp", with the program name - * (rather than an absolute pathname) as the first argument; - * that way, the "PATH" variable in the environment does the right - * thing. Too bad execvp and execlp (hence runvp and runp) don't - * accept a pathlist as an explicit argument. - * - ********************************************************************** - */ - -#include <stdio.h> -#include <signal.h> -#include <sys/wait.h> -#include <varargs.h> -#define MAXARGS 100 - -static int dorun(); - -int run (name,va_alist) -char *name; -va_dcl -{ - int val; - va_list ap; - - va_start(ap); - val = runv (name,ap); - va_end(ap); - return(val); -} - -int runv (name,argv) -char *name,**argv; -{ - return (dorun (name, argv, 0)); -} - -int runp (name,va_alist) -char *name; -va_dcl -{ - int val; - va_list ap; - char *args[MAXARGS]; - int argno=0; - - va_start(ap); - while (argno < MAXARGS - && (args[argno++] = va_arg(ap, char *)) != (char *)0); - va_end(ap); - val = runvp (name,args); - return (val); -} - -int runvp (name,argv) -char *name,**argv; -{ - return (dorun (name, argv, 1)); -} - -static -int dorun (name,argv,usepath) -char *name,**argv; -int usepath; -{ - int wpid; - register int pid; - struct sigvec ignoresig,intsig,quitsig; - union wait status; - int execvp(), execv(); - int (*execrtn)() = usepath ? execvp : execv; - - if ((pid = vfork()) == -1) - return(-1); /* no more process's, so exit with error */ - - if (pid == 0) { /* child process */ - setgid (getgid()); - setuid (getuid()); - (*execrtn) (name,argv); - fprintf (stderr,"run: can't exec %s\n",name); - _exit (0377); - } - - ignoresig.sv_handler = SIG_IGN; /* ignore INT and QUIT signals */ - ignoresig.sv_mask = 0; - ignoresig.sv_onstack = 0; - sigvec (SIGINT,&ignoresig,&intsig); - sigvec (SIGQUIT,&ignoresig,&quitsig); - do { - wpid = wait3 (&status.w_status, WUNTRACED, 0); - if (WIFSTOPPED (status)) { - kill (0,SIGTSTP); - wpid = 0; - } - } while (wpid != pid && wpid != -1); - sigvec (SIGINT,&intsig,0); /* restore signals */ - sigvec (SIGQUIT,&quitsig,0); - - if (WIFSIGNALED (status) || status.w_retcode == 0377) - return (-1); - - return (status.w_retcode); -} |
