diff options
Diffstat (limited to 'toolbox/upstream-netbsd/bin/kill/kill.c')
| -rw-r--r-- | toolbox/upstream-netbsd/bin/kill/kill.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/toolbox/upstream-netbsd/bin/kill/kill.c b/toolbox/upstream-netbsd/bin/kill/kill.c new file mode 100644 index 0000000..0592577 --- /dev/null +++ b/toolbox/upstream-netbsd/bin/kill/kill.c @@ -0,0 +1,253 @@ +/* $NetBSD: kill.c,v 1.27 2011/08/29 14:51:18 joerg 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 <sys/cdefs.h> +#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 1.27 2011/08/29 14:51:18 joerg Exp $"); +#endif +#endif /* not lint */ + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <limits.h> +#include <inttypes.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> +#include <locale.h> +#include <sys/ioctl.h> + +#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(char *); +static void printsignals(FILE *); +static int signame_to_signum(char *); +__dead static void usage(void); + +int +main(int argc, char *argv[]) +{ + int errors; + intmax_t numsig, pid; + char *ep; + + setprogname(argv[0]); + setlocale(LC_ALL, ""); + if (argc < 2) + usage(); + + numsig = SIGTERM; + + argc--, argv++; + if (strcmp(*argv, "-l") == 0) { + argc--, argv++; + if (argc > 1) + usage(); + if (argc == 1) { + if (isdigit((unsigned char)**argv) == 0) + usage(); + numsig = strtoimax(*argv, &ep, 10); + /* check for correctly parsed number */ + if (*ep != '\0' || numsig == INTMAX_MIN || numsig == INTMAX_MAX) { + errx(EXIT_FAILURE, "illegal signal number: %s", + *argv); + /* NOTREACHED */ + } + if (numsig >= 128) + numsig -= 128; + /* and whether it fits into signals range */ + if (numsig <= 0 || numsig >= NSIG) + nosig(*argv); + printf("%s\n", sys_signame[(int) numsig]); + exit(0); + } + printsignals(stdout); + exit(0); + } + + if (!strcmp(*argv, "-s")) { + argc--, argv++; + if (argc < 1) { + warnx("option requires an argument -- s"); + usage(); + } + if (strcmp(*argv, "0")) { + if ((numsig = signame_to_signum(*argv)) < 0) + nosig(*argv); + } else + numsig = 0; + argc--, argv++; + } else if (**argv == '-') { + char *sn = *argv + 1; + if (isalpha((unsigned char)*sn)) { + if ((numsig = signame_to_signum(sn)) < 0) + nosig(sn); + } else if (isdigit((unsigned char)*sn)) { + numsig = strtoimax(sn, &ep, 10); + /* check for correctly parsed number */ + if (*ep || numsig == INTMAX_MIN || numsig == INTMAX_MAX ) { + errx(EXIT_FAILURE, "illegal signal number: %s", + sn); + /* NOTREACHED */ + } + /* and whether it fits into signals range */ + if (numsig < 0 || numsig >= NSIG) + nosig(sn); + } else + nosig(sn); + 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 + { + pid = strtoimax(*argv, &ep, 10); + /* make sure the pid is a number and fits into pid_t */ + if (!**argv || *ep || pid == INTMAX_MIN || + pid == INTMAX_MAX || pid != (pid_t) pid) { + + warnx("illegal process id: %s", *argv); + errors = 1; + continue; + } + } + if (kill((pid_t) pid, (int) numsig) == -1) { + warn("%s", *argv); + errors = 1; + } +#ifdef SHELL + /* Wakeup the process if it was suspended, so it can + exit without an explicit 'fg'. */ + if (numsig == SIGTERM || numsig == SIGHUP) + kill((pid_t) pid, SIGCONT); +#endif + } + + exit(errors); + /* NOTREACHED */ +} + +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 void +nosig(char *name) +{ + + warnx("unknown signal %s; valid signals:", name); + printsignals(stderr); + exit(1); + /* NOTREACHED */ +} + +static void +printsignals(FILE *fp) +{ + int sig; + int len, nl; + const char *name; + int termwidth = 80; + + if (isatty(fileno(fp))) { + struct winsize win; + if (ioctl(fileno(fp), 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) { + fprintf(fp, "\n"); + len = 0; + } else + if (len != 0) + fprintf(fp, " "); + len += nl; + fprintf(fp, "%s", name); + } + if (len != 0) + fprintf(fp, "\n"); +} + +static void +usage(void) +{ + + fprintf(stderr, "usage: %s [-s signal_name] pid ...\n" + " %s -l [exit_status]\n" + " %s -signal_name pid ...\n" + " %s -signal_number pid ...\n", + getprogname(), getprogname(), getprogname(), getprogname()); + exit(1); + /* NOTREACHED */ +} |