/* $NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $ */ /* * Copyright (c) 1988, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if 0 #if !defined(lint) && !defined(SHELL) __COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95"; #else __RCSID("$NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $"); #endif /* not lint */ #endif #include #include #include #include #include #include "shtypes.h" #include "jobs.h" #include "error.h" #include "shinstance.h" static int nosig(shinstance *, char *); static void printsignals(shinstance *, struct output *); static int signame_to_signum(char *); static int usage(shinstance *psh); int killcmd(shinstance *psh, int argc, char *argv[]) { int errors, numsig; char *ep; if (argc < 2) return usage(psh); numsig = SIGTERM; argc--, argv++; if (strcmp(*argv, "-l") == 0) { argc--, argv++; if (argc > 1) return usage(psh); if (argc == 1) { if (isdigit((unsigned char)**argv) == 0) return usage(psh); numsig = strtol(*argv, &ep, 10); if (*ep != '\0') { sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s", *argv); /* NOTREACHED */ } if (numsig >= 128) numsig -= 128; if (numsig <= 0 || numsig >= NSIG) return nosig(psh, *argv); outfmt(psh->out1, "%s\n", sys_signame[numsig]); //sh_exit(psh, 0); return 0; } printsignals(psh, psh->out1); //sh_exit(psh, 0); return 0; } if (!strcmp(*argv, "-s")) { argc--, argv++; if (argc < 1) { sh_warnx(psh, "option requires an argument -- s"); return usage(psh); } if (strcmp(*argv, "0")) { if ((numsig = signame_to_signum(*argv)) < 0) return nosig(psh, *argv); } else numsig = 0; argc--, argv++; } else if (**argv == '-') { ++*argv; if (isalpha((unsigned char)**argv)) { if ((numsig = signame_to_signum(*argv)) < 0) return nosig(psh, *argv); } else if (isdigit((unsigned char)**argv)) { numsig = strtol(*argv, &ep, 10); if (!*argv || *ep) { sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s", *argv); /* NOTREACHED */ } if (numsig < 0 || numsig >= NSIG) return nosig(psh, *argv); } else return nosig(psh, *argv); argc--, argv++; } if (argc == 0) return usage(psh); for (errors = 0; argc; argc--, argv++) { const char * const strpid = argv[0]; shpid pid; if (*strpid == '%') { pid = getjobpgrp(psh, strpid); if (pid == 0) { sh_warnx(psh, "illegal job id: %s", strpid); errors = 1; continue; } } else { #if !defined(SH_FORKED_MODE) && defined(_MSC_VER) pid = _strtoi64(strpid, &ep, 10); #elif !defined(SH_FORKED_MODE) pid = strtoll(strpid, &ep, 10); #else pid = strtol(strpid, &ep, 10); #endif if (!*strpid || *ep) { sh_warnx(psh, "illegal process id: %s", strpid); errors = 1; continue; } } if (sh_kill(psh, pid, numsig) == -1) { sh_warn(psh, "%s", strpid); errors = 1; } /* Wakeup the process if it was suspended, so it can exit without an explicit 'fg'. */ if (numsig == SIGTERM || numsig == SIGHUP) sh_kill(psh, pid, SIGCONT); } //sh_exit(psh, errors); ///* NOTREACHED */ return errors; } static int signame_to_signum(char *sig) { int n; if (strncasecmp(sig, "sig", 3) == 0) sig += 3; for (n = 1; n < NSIG; n++) { if (!strcasecmp(sys_signame[n], sig)) return (n); } return (-1); } static int nosig(shinstance *psh, char *name) { sh_warnx(psh, "unknown signal %s; valid signals:", name); printsignals(psh, psh->out2); //sh_exit(psh, 1); ///* NOTREACHED */ return 1; } static void printsignals(shinstance *psh, struct output *out) { int sig; size_t len, nl; const char *name; unsigned termwidth = 80; if (shfile_isatty(&psh->fdtab, out->fd)) { sh_winsize win; if (shfile_ioctl(&psh->fdtab, out->fd, TIOCGWINSZ, &win) == 0 && win.ws_col > 0) termwidth = win.ws_col; } for (len = 0, sig = 1; sig < NSIG; sig++) { name = sys_signame[sig]; nl = 1 + strlen(name); if (len + nl >= termwidth) { outfmt(out, "\n"); len = 0; } else if (len != 0) outfmt(out, " "); len += nl; outfmt(out, "%s", name); } if (len != 0) outfmt(out, "\n"); } static int usage(shinstance *psh) { outfmt(psh->out2, "usage: %s [-s signal_name] pid ...\n" " %s -l [exit_status]\n" " %s -signal_name pid ...\n" " %s -signal_number pid ...\n", psh->commandname, psh->commandname, psh->commandname, psh->commandname); //sh_exit(psh, 1); ///* NOTREACHED */ return 1; }