From 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe Mon Sep 17 00:00:00 2001 From: Kiyoshi Aman Date: Fri, 1 Feb 2019 22:55:37 +0000 Subject: initial population --- bin/kill/kill.c | 320 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 320 insertions(+) create mode 100644 bin/kill/kill.c (limited to 'bin/kill/kill.c') diff --git a/bin/kill/kill.c b/bin/kill/kill.c new file mode 100644 index 0000000..6c17cb3 --- /dev/null +++ b/bin/kill/kill.c @@ -0,0 +1,320 @@ +/* $NetBSD: kill.c,v 1.30 2018/12/12 20:22:43 kre 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. + */ + +#include +#if !defined(lint) && !defined(SHELL) +__COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95"; +#else +__RCSID("$NetBSD: kill.c,v 1.30 2018/12/12 20:22:43 kre Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef SHELL /* sh (aka ash) builtin */ +int killcmd(int, char *argv[]); +#define main killcmd +#include "../../bin/sh/bltin/bltin.h" +#endif /* SHELL */ + +__dead static void nosig(const char *); +void printsignals(FILE *, int); +static int signum(const char *); +static pid_t processnum(const char *); +__dead static void usage(void); + +int +main(int argc, char *argv[]) +{ + int errors; + int numsig; + pid_t pid; + const char *sn; + + setprogname(argv[0]); + setlocale(LC_ALL, ""); + if (argc < 2) + usage(); + + numsig = SIGTERM; + + argc--, argv++; + + /* + * Process exactly 1 option, if there is one. + */ + if (argv[0][0] == '-') { + switch (argv[0][1]) { + case 'l': + if (argv[0][2] != '\0') + sn = argv[0] + 2; + else { + argc--; argv++; + sn = argv[0]; + } + if (argc > 1) + usage(); + if (argc == 1) { + if (isdigit((unsigned char)*sn) == 0) + usage(); + numsig = signum(sn); + if (numsig >= 128) + numsig -= 128; + if (numsig == 0 || signalnext(numsig) == -1) + nosig(sn); + sn = signalname(numsig); + if (sn == NULL) + errx(EXIT_FAILURE, + "unknown signal number: %d", numsig); + printf("%s\n", sn); + exit(0); + } + printsignals(stdout, 0); + exit(0); + + case 's': + if (argv[0][2] != '\0') + sn = argv[0] + 2; + else { + argc--, argv++; + if (argc < 1) { + warnx( + "option requires an argument -- s"); + usage(); + } + sn = argv[0]; + } + if (strcmp(sn, "0") == 0) + numsig = 0; + else if ((numsig = signalnumber(sn)) == 0) { + if (sn != argv[0]) + goto trysignal; + nosig(sn); + } + argc--, argv++; + break; + + case '-': + if (argv[0][2] == '\0') { + /* process this one again later */ + break; + } + /* FALL THROUGH */ + case '\0': + usage(); + break; + + default: + trysignal: + sn = *argv + 1; + if (((numsig = signalnumber(sn)) == 0)) { + if (isdigit((unsigned char)*sn)) + numsig = signum(sn); + else + nosig(sn); + } + + if (numsig != 0 && signalnext(numsig) == -1) + nosig(sn); + argc--, argv++; + break; + } + } + + /* deal with the optional '--' end of options option */ + if (argc > 0 && strcmp(*argv, "--") == 0) + argc--, argv++; + + if (argc == 0) + usage(); + + for (errors = 0; argc; argc--, argv++) { +#ifdef SHELL + extern int getjobpgrp(const char *); + if (*argv[0] == '%') { + pid = getjobpgrp(*argv); + if (pid == 0) { + warnx("illegal job id: %s", *argv); + errors = 1; + continue; + } + } else +#endif + if ((pid = processnum(*argv)) == (pid_t)-1) { + errors = 1; + continue; + } + + if (kill(pid, numsig) == -1) { + warn("%s", *argv); + errors = 1; + } +#ifdef SHELL + /* + * Wakeup the process if it was suspended, so it can + * exit without an explicit 'fg'. + * (kernel handles this for SIGKILL) + */ + if (numsig == SIGTERM || numsig == SIGHUP) + kill(pid, SIGCONT); +#endif + } + + exit(errors); + /* NOTREACHED */ +} + +static int +signum(const char *sn) +{ + intmax_t n; + char *ep; + + n = strtoimax(sn, &ep, 10); + + /* check for correctly parsed number */ + if (*ep || n <= INT_MIN || n >= INT_MAX ) + errx(EXIT_FAILURE, "illegal signal number: %s", sn); + /* NOTREACHED */ + + return (int)n; +} + +static pid_t +processnum(const char *s) +{ + intmax_t n; + char *ep; + + n = strtoimax(s, &ep, 10); + + /* check for correctly parsed number */ + if (*ep || n == INTMAX_MIN || n == INTMAX_MAX || (pid_t)n != n || + n == -1) { + warnx("illegal process%s id: %s", (n < 0 ? " group" : ""), s); + n = -1; + } + + return (pid_t)n; +} + +static void +nosig(const char *name) +{ + + warnx("unknown signal %s; valid signals:", name); + printsignals(stderr, 0); + exit(1); + /* NOTREACHED */ +} + +#ifndef SHELL +/* + * Print the names of all the signals (neatly) to fp + * "len" gives the number of chars already printed to + * the current output line (in kill.c, always 0) + */ +void +printsignals(FILE *fp, int len) +{ + int sig; + int nl, pad; + const char *name; + int termwidth = 80; + + if ((name = getenv("COLUMNS")) != 0) + termwidth = atoi(name); + else if (isatty(fileno(fp))) { + struct winsize win; + + if (ioctl(fileno(fp), TIOCGWINSZ, &win) == 0 && win.ws_col > 0) + termwidth = win.ws_col; + } + + pad = (len | 7) + 1 - len; + + for (sig = 0; (sig = signalnext(sig)) != 0; ) { + name = signalname(sig); + if (name == NULL) + continue; + + nl = strlen(name); + + if (len > 0 && nl + len + pad >= termwidth) { + fprintf(fp, "\n"); + len = 0; + pad = 0; + } else if (pad > 0 && len != 0) + fprintf(fp, "%*s", pad, ""); + else + pad = 0; + + len += nl + pad; + pad = (nl | 7) + 1 - nl; + + fprintf(fp, "%s", name); + } + if (len != 0) + fprintf(fp, "\n"); +} +#endif + +static void +usage(void) +{ + const char *pn = getprogname(); + + fprintf(stderr, "usage: %s [-s signal_name] pid ...\n" + " %s -l [exit_status]\n" + " %s -signal_name pid ...\n" + " %s -signal_number pid ...\n", + pn, pn, pn, pn); + exit(1); + /* NOTREACHED */ +} -- cgit v1.2.3-70-g09d2