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Diffstat (limited to 'bin/1sh/main.c')
| -rw-r--r-- | bin/1sh/main.c | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/bin/1sh/main.c b/bin/1sh/main.c deleted file mode 100644 index 7a0bf25b..00000000 --- a/bin/1sh/main.c +++ /dev/null @@ -1,350 +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[] = "@(#)main.c 8.6 (Berkeley) 5/28/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: releng/12.0/bin/sh/main.c 336320 2018-07-15 21:55:17Z jilles $"); - -#include <stdio.h> -#include <signal.h> -#include <sys/stat.h> -#include <unistd.h> -#include <fcntl.h> -#include <locale.h> -#include <errno.h> - -#include "shell.h" -#include "main.h" -#include "mail.h" -#include "options.h" -#include "output.h" -#include "parser.h" -#include "nodes.h" -#include "expand.h" -#include "eval.h" -#include "jobs.h" -#include "input.h" -#include "trap.h" -#include "var.h" -#include "show.h" -#include "memalloc.h" -#include "error.h" -#include "mystring.h" -#include "exec.h" -#include "cd.h" -#include "redir.h" -#include "builtins.h" - -int rootpid; -int rootshell; -struct jmploc main_handler; -int localeisutf8, initial_localeisutf8; - -static void reset(void); -static void cmdloop(int); -static void read_profile(const char *); -static char *find_dot_file(char *); - -/* - * Main routine. We initialize things, parse the arguments, execute - * profiles if we're a login shell, and then call cmdloop to execute - * commands. The setjmp call sets up the location to jump to when an - * exception occurs. When an exception occurs the variable "state" - * is used to figure out how far we had gotten. - */ - -int -main(int argc, char *argv[]) -{ - struct stackmark smark, smark2; - volatile int state; - char *shinit; - - (void) setlocale(LC_ALL, ""); - initcharset(); - state = 0; - if (setjmp(main_handler.loc)) { - switch (exception) { - case EXEXEC: - exitstatus = exerrno; - break; - - case EXERROR: - exitstatus = 2; - break; - - default: - break; - } - - if (state == 0 || iflag == 0 || ! rootshell || - exception == EXEXIT) - exitshell(exitstatus); - reset(); - if (exception == EXINT) - out2fmt_flush("\n"); - popstackmark(&smark); - FORCEINTON; /* enable interrupts */ - if (state == 1) - goto state1; - else if (state == 2) - goto state2; - else if (state == 3) - goto state3; - else - goto state4; - } - handler = &main_handler; -#ifdef DEBUG - opentrace(); - trputs("Shell args: "); trargs(argv); -#endif - rootpid = getpid(); - rootshell = 1; - INTOFF; - initvar(); - setstackmark(&smark); - setstackmark(&smark2); - procargs(argc, argv); - pwd_init(iflag); - INTON; - if (iflag) - chkmail(1); - if (argv[0] && argv[0][0] == '-') { - state = 1; - read_profile("/etc/profile"); -state1: - state = 2; - if (privileged == 0) - read_profile("${HOME-}/.profile"); - else - read_profile("/etc/suid_profile"); - } -state2: - state = 3; - if (!privileged && iflag) { - if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') { - state = 3; - read_profile(shinit); - } - } -state3: - state = 4; - popstackmark(&smark2); - if (minusc) { - evalstring(minusc, sflag ? 0 : EV_EXIT); - } -state4: - if (sflag || minusc == NULL) { - cmdloop(1); - } - iflag = 0; - optschanged(); - exitshell(exitstatus); - /*NOTREACHED*/ - return 0; -} - -static void -reset(void) -{ - reseteval(); - resetinput(); -} - -/* - * Read and execute commands. "Top" is nonzero for the top level command - * loop; it turns on prompting if the shell is interactive. - */ - -static void -cmdloop(int top) -{ - union node *n; - struct stackmark smark; - int inter; - int numeof = 0; - - TRACE(("cmdloop(%d) called\n", top)); - setstackmark(&smark); - for (;;) { - if (pendingsig) - dotrap(); - inter = 0; - if (iflag && top) { - inter++; - showjobs(1, SHOWJOBS_DEFAULT); - chkmail(0); - flushout(&output); - } - n = parsecmd(inter); - /* showtree(n); DEBUG */ - if (n == NEOF) { - if (!top || numeof >= 50) - break; - if (!stoppedjobs()) { - if (!Iflag) - break; - out2fmt_flush("\nUse \"exit\" to leave shell.\n"); - } - numeof++; - } else if (n != NULL && nflag == 0) { - job_warning = (job_warning == 2) ? 1 : 0; - numeof = 0; - evaltree(n, 0); - } - popstackmark(&smark); - setstackmark(&smark); - if (evalskip != 0) { - if (evalskip == SKIPRETURN) - evalskip = 0; - break; - } - } - popstackmark(&smark); -} - - - -/* - * Read /etc/profile or .profile. Return on error. - */ - -static void -read_profile(const char *name) -{ - int fd; - const char *expandedname; - - expandedname = expandstr(name); - if (expandedname == NULL) - return; - INTOFF; - if ((fd = open(expandedname, O_RDONLY | O_CLOEXEC)) >= 0) - setinputfd(fd, 1); - INTON; - if (fd < 0) - return; - cmdloop(0); - popfile(); -} - - - -/* - * Read a file containing shell functions. - */ - -void -readcmdfile(const char *name) -{ - setinputfile(name, 1); - cmdloop(0); - popfile(); -} - - - -/* - * Take commands from a file. To be compatible we should do a path - * search for the file, which is necessary to find sub-commands. - */ - - -static char * -find_dot_file(char *basename) -{ - char *fullname; - const char *opt; - const char *path = pathval(); - struct stat statb; - - /* don't try this for absolute or relative paths */ - if( strchr(basename, '/')) - return basename; - - while ((fullname = padvance(&path, &opt, basename)) != NULL) { - if ((stat(fullname, &statb) == 0) && S_ISREG(statb.st_mode)) { - /* - * Don't bother freeing here, since it will - * be freed by the caller. - */ - return fullname; - } - stunalloc(fullname); - } - return basename; -} - -int -dotcmd(int argc, char **argv) -{ - char *filename, *fullname; - - if (argc < 2) - error("missing filename"); - - exitstatus = 0; - - /* - * Because we have historically not supported any options, - * only treat "--" specially. - */ - filename = argc > 2 && strcmp(argv[1], "--") == 0 ? argv[2] : argv[1]; - - fullname = find_dot_file(filename); - setinputfile(fullname, 1); - commandname = fullname; - cmdloop(0); - popfile(); - return exitstatus; -} - - -int -exitcmd(int argc, char **argv) -{ - if (stoppedjobs()) - return 0; - iflag = 0; - optschanged(); - if (argc > 1) - exitshell(number(argv[1])); - else - exitshell_savedstatus(); -} |