diff options
Diffstat (limited to 'src/kash/bltin/kill.c')
| -rw-r--r-- | src/kash/bltin/kill.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/kash/bltin/kill.c b/src/kash/bltin/kill.c new file mode 100644 index 0000000..4b6e5d7 --- /dev/null +++ b/src/kash/bltin/kill.c @@ -0,0 +1,236 @@ +/* $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 <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#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; +} |