2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static char const copyright
[] =
35 "@(#) Copyright (c) 1991, 1993\n\
36 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid
[] = "@(#)main.c 8.6 (Berkeley) 5/28/95";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
79 struct jmploc main_handler
;
80 int localeisutf8
, initial_localeisutf8
;
82 static void reset(void);
83 static void cmdloop(int);
84 static void read_profile(const char *);
85 static char *find_dot_file(char *);
88 * Main routine. We initialize things, parse the arguments, execute
89 * profiles if we're a login shell, and then call cmdloop to execute
90 * commands. The setjmp call sets up the location to jump to when an
91 * exception occurs. When an exception occurs the variable "state"
92 * is used to figure out how far we had gotten.
96 main(int argc
, char *argv
[])
98 struct stackmark smark
, smark2
;
102 (void) setlocale(LC_ALL
, "");
105 if (setjmp(main_handler
.loc
)) {
108 exitstatus
= exerrno
;
119 if (state
== 0 || iflag
== 0 || ! rootshell
||
121 exitshell(exitstatus
);
123 if (exception
== EXINT
)
125 popstackmark(&smark
);
126 FORCEINTON
; /* enable interrupts */
136 handler
= &main_handler
;
139 trputs("Shell args: "); trargs(argv
);
145 setstackmark(&smark
);
146 setstackmark(&smark2
);
147 procargs(argc
, argv
);
152 if (argv
[0] && argv
[0][0] == '-') {
154 read_profile("/etc/profile");
158 read_profile("${HOME-}/.profile");
160 read_profile("/etc/suid_profile");
164 if (!privileged
&& iflag
) {
165 if ((shinit
= lookupvar("ENV")) != NULL
&& *shinit
!= '\0') {
167 read_profile(shinit
);
172 popstackmark(&smark2
);
174 evalstring(minusc
, sflag
? 0 : EV_EXIT
);
177 if (sflag
|| minusc
== NULL
) {
180 exitshell(exitstatus
);
193 * Read and execute commands. "Top" is nonzero for the top level command
194 * loop; it turns on prompting if the shell is interactive.
201 struct stackmark smark
;
205 TRACE(("cmdloop(%d) called\n", top
));
206 setstackmark(&smark
);
213 showjobs(1, SHOWJOBS_DEFAULT
);
218 /* showtree(n); DEBUG */
220 if (!top
|| numeof
>= 50)
222 if (!stoppedjobs()) {
225 out2fmt_flush("\nUse \"exit\" to leave shell.\n");
228 } else if (n
!= NULL
&& nflag
== 0) {
229 job_warning
= (job_warning
== 2) ? 1 : 0;
233 popstackmark(&smark
);
234 setstackmark(&smark
);
236 if (evalskip
== SKIPRETURN
)
241 popstackmark(&smark
);
247 * Read /etc/profile or .profile. Return on error.
251 read_profile(const char *name
)
254 const char *expandedname
;
256 expandedname
= expandstr(name
);
257 if (expandedname
== NULL
)
260 if ((fd
= open(expandedname
, O_RDONLY
| O_CLOEXEC_MAYBE
)) >= 0)
272 * Read a file containing shell functions.
276 readcmdfile(const char *name
)
278 setinputfile(name
, 1);
286 * Take commands from a file. To be compatible we should do a path
287 * search for the file, which is necessary to find sub-commands.
292 find_dot_file(char *basename
)
295 const char *path
= pathval();
298 /* don't try this for absolute or relative paths */
299 if( strchr(basename
, '/'))
302 while ((fullname
= padvance(&path
, basename
)) != NULL
) {
303 if ((stat(fullname
, &statb
) == 0) && S_ISREG(statb
.st_mode
)) {
305 * Don't bother freeing here, since it will
306 * be freed by the caller.
316 dotcmd(int argc
, char **argv
)
318 char *filename
, *fullname
;
321 error("missing filename");
326 * Because we have historically not supported any options,
327 * only treat "--" specially.
329 filename
= argc
> 2 && strcmp(argv
[1], "--") == 0 ? argv
[2] : argv
[1];
331 fullname
= find_dot_file(filename
);
332 setinputfile(fullname
, 1);
333 commandname
= fullname
;
341 exitcmd(int argc
, char **argv
)
346 exitshell(number(argv
[1]));
348 exitshell_savedstatus();