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Diffstat (limited to 'bin/cash/miscbltin.c')
| -rw-r--r-- | bin/cash/miscbltin.c | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/bin/cash/miscbltin.c b/bin/cash/miscbltin.c deleted file mode 100644 index 7f0c42e7..00000000 --- a/bin/cash/miscbltin.c +++ /dev/null @@ -1,534 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-3-Clause - * - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * 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. - */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)miscbltin.c 8.4 (Berkeley) 5/4/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: releng/12.0/bin/sh/miscbltin.c 326025 2017-11-20 19:49:47Z pfg $"); - -/* - * Miscellaneous builtins. - */ - -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <unistd.h> -#include <errno.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> - -#include "shell.h" -#include "options.h" -#include "var.h" -#include "output.h" -#include "memalloc.h" -#include "error.h" -#include "mystring.h" -#include "syntax.h" -#include "trap.h" - -#undef eflag - -int readcmd(int, char **); -int umaskcmd(int, char **); -int ulimitcmd(int, char **); - -/* - * The read builtin. The -r option causes backslashes to be treated like - * ordinary characters. - * - * This uses unbuffered input, which may be avoidable in some cases. - * - * Note that if IFS=' :' then read x y should work so that: - * 'a b' x='a', y='b' - * ' a b ' x='a', y='b' - * ':b' x='', y='b' - * ':' x='', y='' - * '::' x='', y='' - * ': :' x='', y='' - * ':::' x='', y='::' - * ':b c:' x='', y='b c:' - */ - -int -readcmd(int argc __unused, char **argv __unused) -{ - char **ap; - int backslash; - char c; - int rflag; - char *prompt; - const char *ifs; - char *p; - int startword; - int status; - int i; - int is_ifs; - int saveall = 0; - ptrdiff_t lastnonifs, lastnonifsws; - struct timeval tv; - char *tvptr; - fd_set ifds; - ssize_t nread; - int sig; - - rflag = 0; - prompt = NULL; - tv.tv_sec = -1; - tv.tv_usec = 0; - while ((i = nextopt("erp:t:")) != '\0') { - switch(i) { - case 'p': - prompt = shoptarg; - break; - case 'e': - break; - case 'r': - rflag = 1; - break; - case 't': - tv.tv_sec = strtol(shoptarg, &tvptr, 0); - if (tvptr == shoptarg) - error("timeout value"); - switch(*tvptr) { - case 0: - case 's': - break; - case 'h': - tv.tv_sec *= 60; - /* FALLTHROUGH */ - case 'm': - tv.tv_sec *= 60; - break; - default: - error("timeout unit"); - } - break; - } - } - if (prompt && isatty(0)) { - out2str(prompt); - flushall(); - } - if (*(ap = argptr) == NULL) - error("arg count"); - if ((ifs = bltinlookup("IFS", 1)) == NULL) - ifs = " \t\n"; - - if (tv.tv_sec >= 0) { - /* - * Wait for something to become available. - */ - FD_ZERO(&ifds); - FD_SET(0, &ifds); - status = select(1, &ifds, NULL, NULL, &tv); - /* - * If there's nothing ready, return an error. - */ - if (status <= 0) { - sig = pendingsig; - return (128 + (sig != 0 ? sig : SIGALRM)); - } - } - - status = 0; - startword = 2; - backslash = 0; - STARTSTACKSTR(p); - lastnonifs = lastnonifsws = -1; - for (;;) { - nread = read(STDIN_FILENO, &c, 1); - if (nread == -1) { - if (errno == EINTR) { - sig = pendingsig; - if (sig == 0) - continue; - status = 128 + sig; - break; - } - warning("read error: %s", strerror(errno)); - status = 2; - break; - } else if (nread != 1) { - status = 1; - break; - } - if (c == '\0') - continue; - CHECKSTRSPACE(1, p); - if (backslash) { - backslash = 0; - if (c != '\n') { - startword = 0; - lastnonifs = lastnonifsws = p - stackblock(); - USTPUTC(c, p); - } - continue; - } - if (!rflag && c == '\\') { - backslash++; - continue; - } - if (c == '\n') - break; - if (strchr(ifs, c)) - is_ifs = strchr(" \t\n", c) ? 1 : 2; - else - is_ifs = 0; - - if (startword != 0) { - if (is_ifs == 1) { - /* Ignore leading IFS whitespace */ - if (saveall) - USTPUTC(c, p); - continue; - } - if (is_ifs == 2 && startword == 1) { - /* Only one non-whitespace IFS per word */ - startword = 2; - if (saveall) { - lastnonifsws = p - stackblock(); - USTPUTC(c, p); - } - continue; - } - } - - if (is_ifs == 0) { - /* append this character to the current variable */ - startword = 0; - if (saveall) - /* Not just a spare terminator */ - saveall++; - lastnonifs = lastnonifsws = p - stackblock(); - USTPUTC(c, p); - continue; - } - - /* end of variable... */ - startword = is_ifs; - - if (ap[1] == NULL) { - /* Last variable needs all IFS chars */ - saveall++; - if (is_ifs == 2) - lastnonifsws = p - stackblock(); - USTPUTC(c, p); - continue; - } - - STACKSTRNUL(p); - setvar(*ap, stackblock(), 0); - ap++; - STARTSTACKSTR(p); - lastnonifs = lastnonifsws = -1; - } - STACKSTRNUL(p); - - /* - * Remove trailing IFS chars: always remove whitespace, don't remove - * non-whitespace unless it was naked - */ - if (saveall <= 1) - lastnonifsws = lastnonifs; - stackblock()[lastnonifsws + 1] = '\0'; - setvar(*ap, stackblock(), 0); - - /* Set any remaining args to "" */ - while (*++ap != NULL) - setvar(*ap, "", 0); - return status; -} - - - -int -umaskcmd(int argc __unused, char **argv __unused) -{ - char *ap; - int mask; - int i; - int symbolic_mode = 0; - - while ((i = nextopt("S")) != '\0') { - symbolic_mode = 1; - } - - INTOFF; - mask = umask(0); - umask(mask); - INTON; - - if ((ap = *argptr) == NULL) { - if (symbolic_mode) { - char u[4], g[4], o[4]; - - i = 0; - if ((mask & S_IRUSR) == 0) - u[i++] = 'r'; - if ((mask & S_IWUSR) == 0) - u[i++] = 'w'; - if ((mask & S_IXUSR) == 0) - u[i++] = 'x'; - u[i] = '\0'; - - i = 0; - if ((mask & S_IRGRP) == 0) - g[i++] = 'r'; - if ((mask & S_IWGRP) == 0) - g[i++] = 'w'; - if ((mask & S_IXGRP) == 0) - g[i++] = 'x'; - g[i] = '\0'; - - i = 0; - if ((mask & S_IROTH) == 0) - o[i++] = 'r'; - if ((mask & S_IWOTH) == 0) - o[i++] = 'w'; - if ((mask & S_IXOTH) == 0) - o[i++] = 'x'; - o[i] = '\0'; - - out1fmt("u=%s,g=%s,o=%s\n", u, g, o); - } else { - out1fmt("%.4o\n", mask); - } - } else { - if (is_digit(*ap)) { - mask = 0; - do { - if (*ap >= '8' || *ap < '0') - error("Illegal number: %s", *argptr); - mask = (mask << 3) + (*ap - '0'); - } while (*++ap != '\0'); - umask(mask); - } else { - void *set; - INTOFF; - if ((set = setmode (ap)) == NULL) - error("Illegal number: %s", ap); - - mask = getmode (set, ~mask & 0777); - umask(~mask & 0777); - free(set); - INTON; - } - } - return 0; -} - -/* - * ulimit builtin - * - * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and - * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with - * ash by J.T. Conklin. - * - * Public domain. - */ - -struct limits { - const char *name; - const char *units; - int cmd; - short factor; /* multiply by to get rlim_{cur,max} values */ - char option; -}; - -static const struct limits limits[] = { -#ifdef RLIMIT_CPU - { "cpu time", "seconds", RLIMIT_CPU, 1, 't' }, -#endif -#ifdef RLIMIT_FSIZE - { "file size", "512-blocks", RLIMIT_FSIZE, 512, 'f' }, -#endif -#ifdef RLIMIT_DATA - { "data seg size", "kbytes", RLIMIT_DATA, 1024, 'd' }, -#endif -#ifdef RLIMIT_STACK - { "stack size", "kbytes", RLIMIT_STACK, 1024, 's' }, -#endif -#ifdef RLIMIT_CORE - { "core file size", "512-blocks", RLIMIT_CORE, 512, 'c' }, -#endif -#ifdef RLIMIT_RSS - { "max memory size", "kbytes", RLIMIT_RSS, 1024, 'm' }, -#endif -#ifdef RLIMIT_MEMLOCK - { "locked memory", "kbytes", RLIMIT_MEMLOCK, 1024, 'l' }, -#endif -#ifdef RLIMIT_NPROC - { "max user processes", (char *)0, RLIMIT_NPROC, 1, 'u' }, -#endif -#ifdef RLIMIT_NOFILE - { "open files", (char *)0, RLIMIT_NOFILE, 1, 'n' }, -#endif -#ifdef RLIMIT_VMEM - { "virtual mem size", "kbytes", RLIMIT_VMEM, 1024, 'v' }, -#endif -#ifdef RLIMIT_SWAP - { "swap limit", "kbytes", RLIMIT_SWAP, 1024, 'w' }, -#endif -#ifdef RLIMIT_SBSIZE - { "socket buffer size", "bytes", RLIMIT_SBSIZE, 1, 'b' }, -#endif -#ifdef RLIMIT_NPTS - { "pseudo-terminals", (char *)0, RLIMIT_NPTS, 1, 'p' }, -#endif -#ifdef RLIMIT_KQUEUES - { "kqueues", (char *)0, RLIMIT_KQUEUES, 1, 'k' }, -#endif -#ifdef RLIMIT_UMTXP - { "umtx shared locks", (char *)0, RLIMIT_UMTXP, 1, 'o' }, -#endif - { (char *) 0, (char *)0, 0, 0, '\0' } -}; - -enum limithow { SOFT = 0x1, HARD = 0x2 }; - -static void -printlimit(enum limithow how, const struct rlimit *limit, - const struct limits *l) -{ - rlim_t val = 0; - - if (how & SOFT) - val = limit->rlim_cur; - else if (how & HARD) - val = limit->rlim_max; - if (val == RLIM_INFINITY) - out1str("unlimited\n"); - else - { - val /= l->factor; - out1fmt("%jd\n", (intmax_t)val); - } -} - -int -ulimitcmd(int argc __unused, char **argv __unused) -{ - rlim_t val = 0; - enum limithow how = SOFT | HARD; - const struct limits *l; - int set, all = 0; - int optc, what; - struct rlimit limit; - - what = 'f'; - while ((optc = nextopt("HSatfdsmcnuvlbpwko")) != '\0') - switch (optc) { - case 'H': - how = HARD; - break; - case 'S': - how = SOFT; - break; - case 'a': - all = 1; - break; - default: - what = optc; - } - - for (l = limits; l->name && l->option != what; l++) - ; - if (!l->name) - error("internal error (%c)", what); - - set = *argptr ? 1 : 0; - if (set) { - char *p = *argptr; - - if (all || argptr[1]) - error("too many arguments"); - if (strcmp(p, "unlimited") == 0) - val = RLIM_INFINITY; - else { - char *end; - uintmax_t uval; - - if (*p < '0' || *p > '9') - error("bad number"); - errno = 0; - uval = strtoumax(p, &end, 10); - if (errno != 0 || *end != '\0') - error("bad number"); - if (uval > UINTMAX_MAX / l->factor) - error("bad number"); - uval *= l->factor; - val = (rlim_t)uval; - if (val < 0 || (uintmax_t)val != uval || - val == RLIM_INFINITY) - error("bad number"); - } - } - if (all) { - for (l = limits; l->name; l++) { - char optbuf[40]; - if (getrlimit(l->cmd, &limit) < 0) - error("can't get limit: %s", strerror(errno)); - - if (l->units) - snprintf(optbuf, sizeof(optbuf), - "(%s, -%c) ", l->units, l->option); - else - snprintf(optbuf, sizeof(optbuf), - "(-%c) ", l->option); - out1fmt("%-18s %18s ", l->name, optbuf); - printlimit(how, &limit, l); - } - return 0; - } - - if (getrlimit(l->cmd, &limit) < 0) - error("can't get limit: %s", strerror(errno)); - if (set) { - if (how & SOFT) - limit.rlim_cur = val; - if (how & HARD) - limit.rlim_max = val; - if (setrlimit(l->cmd, &limit) < 0) - error("bad limit: %s", strerror(errno)); - } else - printlimit(how, &limit, l); - return 0; -} |