get rid of $PGRP
get rid of special bourne-shell emulating mode
This commit is contained in:
tg
parent
e392a30930
commit
76c700b3a6
16
exec.c
16
exec.c
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@ -1,11 +1,11 @@
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/** $MirOS: src/bin/mksh/exec.c,v 1.6 2005/07/04 12:27:25 tg Exp $ */
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/** $MirOS: src/bin/mksh/exec.c,v 1.7 2005/07/04 12:34:22 tg Exp $ */
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/* $OpenBSD: exec.c,v 1.41 2005/03/30 17:16:37 deraadt Exp $ */
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#include "sh.h"
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#include <sys/stat.h>
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#include <ctype.h>
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__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.6 2005/07/04 12:27:25 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.7 2005/07/04 12:34:22 tg Exp $");
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static int comexec(struct op *, struct tbl *volatile, char **,
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int volatile);
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@ -398,7 +398,7 @@ comexec(struct op *t, struct tbl *volatile tp, char **ap, volatile int flags)
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* functions/dot scripts, but in interactive and script) -
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* perhaps save last arg here and set it in shell()?.
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*/
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if (!Flag(FSH) && Flag(FTALKING) && *(lastp = ap)) {
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if (Flag(FTALKING) && *(lastp = ap)) {
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while (*++lastp)
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;
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/* setstr() can't fail here */
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@ -647,12 +647,10 @@ comexec(struct op *t, struct tbl *volatile tp, char **ap, volatile int flags)
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break;
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}
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if (!Flag(FSH)) {
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/* set $_ to programme's full path */
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/* setstr() can't fail here */
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setstr(typeset("_", LOCAL|EXPORT, 0, INTEGER, 0),
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tp->val.s, KSH_RETURN_ERROR);
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}
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/* set $_ to programme's full path */
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/* setstr() can't fail here */
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setstr(typeset("_", LOCAL|EXPORT, 0, INTEGER, 0),
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tp->val.s, KSH_RETURN_ERROR);
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if (flags&XEXEC) {
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j_exit();
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13
funcs.c
13
funcs.c
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@ -1,4 +1,4 @@
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/** $MirOS: src/bin/mksh/funcs.c,v 1.13 2005/07/04 12:27:26 tg Exp $ */
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/** $MirOS: src/bin/mksh/funcs.c,v 1.14 2005/07/04 12:34:22 tg Exp $ */
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/* $OpenBSD: c_ksh.c,v 1.27 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: c_sh.c,v 1.29 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: c_test.c,v 1.17 2005/03/30 17:16:37 deraadt Exp $ */
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@ -13,7 +13,7 @@
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#include <ulimit.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.13 2005/07/04 12:27:26 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.14 2005/07/04 12:34:22 tg Exp $");
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int
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c_cd(char **wp)
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@ -2183,13 +2183,8 @@ c_exec(char **wp __attribute__((unused)))
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for (i = 0; i < NUFILE; i++) {
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if (e->savefd[i] > 0)
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close(e->savefd[i]);
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/*
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* For ksh keep anything > 2 private,
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* for sh, let them be (POSIX says what
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* happens is unspecified and the bourne shell
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* keeps them open).
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*/
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if (!Flag(FSH) && i > 2 && e->savefd[i])
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/* For ksh keep anything > 2 private */
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if (i > 2 && e->savefd[i])
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fcntl(i, F_SETFD, FD_CLOEXEC);
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}
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e->savefd = NULL;
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16
lex.c
16
lex.c
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@ -1,11 +1,11 @@
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/** $MirOS: src/bin/mksh/lex.c,v 1.5 2005/07/04 12:27:26 tg Exp $ */
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/** $MirOS: src/bin/mksh/lex.c,v 1.6 2005/07/04 12:34:23 tg Exp $ */
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/* $OpenBSD: lex.c,v 1.36 2005/03/30 17:16:37 deraadt Exp $ */
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#include "sh.h"
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#include <ctype.h>
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#include <libgen.h>
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__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.5 2005/07/04 12:27:26 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/lex.c,v 1.6 2005/07/04 12:34:23 tg Exp $");
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/* Structure to keep track of the lexing state and the various pieces of info
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* needed for each particular state. */
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@ -677,13 +677,11 @@ Done:
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return c;
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case '(': /*)*/
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if (!Flag(FSH)) {
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if ((c2 = getsc()) == '(') /*)*/
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/* XXX need to handle ((...); (...)) */
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c = MDPAREN;
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else
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ungetsc(c2);
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}
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if ((c2 = getsc()) == '(') /*)*/
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/* XXX need to handle ((...); (...)) */
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c = MDPAREN;
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else
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ungetsc(c2);
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return c;
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/*(*/
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case ')':
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15
main.c
15
main.c
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@ -1,4 +1,4 @@
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/** $MirOS: src/bin/mksh/main.c,v 1.18 2005/07/04 12:27:26 tg Exp $ */
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/** $MirOS: src/bin/mksh/main.c,v 1.19 2005/07/04 12:34:23 tg Exp $ */
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/* $OpenBSD: main.c,v 1.38 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: tty.c,v 1.8 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: io.c,v 1.21 2005/03/30 17:16:37 deraadt Exp $ */
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@ -13,7 +13,7 @@
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#include <time.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.18 2005/07/04 12:27:26 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.19 2005/07/04 12:34:23 tg Exp $");
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const char ksh_version[] = "@(#)MIRBSD KSH R23 2005/07/04";
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@ -29,8 +29,7 @@ static const char initsubs[] = "${PS2=> } ${PS3=#? } ${PS4=+ }";
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static const char *initcoms[] = {
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"typeset", "-r", "KSH_VERSION", NULL,
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"typeset", "-x", "SHELL", "PATH", "HOME", NULL,
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"typeset", "-i", "PGRP=0", "PPID", NULL,
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"typeset", "-i", "OPTIND=1", NULL,
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"typeset", "-i", "PPID", "OPTIND=1", NULL,
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"eval", "typeset -i RANDOM SECONDS=\"${SECONDS-0}\" TMOUT=\"${TMOUT-0}\"", NULL,
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"alias",
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/* Standard ksh aliases */
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@ -156,11 +155,6 @@ main(int argc, char *argv[])
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*/
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Flag(FBRACEEXPAND) = 1;
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/* Check to see if we're /bin/sh. */
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if (!strcmp(&kshname[strlen(kshname) - 3], "/sh") ||
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!strcmp(kshname, "sh") || !strcmp(kshname, "-sh"))
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Flag(FSH) = 1;
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/* Set edit mode to emacs by default, may be overridden
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* by the environment or the user. Also, we want tab completion
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* on in vi by default. */
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@ -207,8 +201,7 @@ main(int argc, char *argv[])
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#endif
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setint(global("PPID"), (long)ppid);
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/* setstr can't fail here */
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if (!Flag(FSH))
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setstr(global("KSH_VERSION"), ksh_version, KSH_RETURN_ERROR);
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setstr(global("KSH_VERSION"), ksh_version, KSH_RETURN_ERROR);
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/* execute initialisation statements */
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for (wp = (char **)initcoms; *wp != NULL; wp++) {
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6
misc.c
6
misc.c
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@ -1,4 +1,4 @@
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/** $MirOS: src/bin/mksh/misc.c,v 1.5 2005/07/04 12:27:27 tg Exp $ */
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/** $MirOS: src/bin/mksh/misc.c,v 1.6 2005/07/04 12:34:23 tg Exp $ */
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/* $OpenBSD: misc.c,v 1.28 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: path.c,v 1.12 2005/03/30 17:16:37 deraadt Exp $ */
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@ -7,7 +7,7 @@
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#include <sys/param.h> /* for MAXPATHLEN */
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#include <sys/stat.h>
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__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.5 2005/07/04 12:27:27 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.6 2005/07/04 12:34:23 tg Exp $");
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short chtypes[UCHAR_MAX+1]; /* type bits for unsigned char */
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@ -252,7 +252,7 @@ change_flag(enum sh_flag f,
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int oldval;
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/* disabled functionality */
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if (f == FPOSIX)
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if ((f == FPOSIX) || (f == FSH))
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return;
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oldval = Flag(f);
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56
mksh.1
56
mksh.1
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@ -1,4 +1,4 @@
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.12 2005/07/04 12:27:27 tg Exp $
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.13 2005/07/04 12:34:23 tg Exp $
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.\" $OpenBSD: ksh.1,v 1.99 2005/05/25 16:52:06 jaredy Exp $
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.\" $OpenBSD: sh.1tbl,v 1.53 2004/12/10 01:56:56 jaredy Exp $
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.\"
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@ -22,7 +22,7 @@
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..
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.Sh NAME
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.Nm mksh
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.Nd MirBSD Korn/Bourne shell
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.Nd MirBSD Korn shell
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.Sh SYNOPSIS
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.Nm
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.Bk -words
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@ -1454,8 +1454,6 @@ An empty string resulting from a leading or trailing
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colon, or two adjacent colons, is treated as a
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.Sq \&.
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(the current directory).
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.It Ev PGRP
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The current process group (read-only).
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.It Ev PPID
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The process ID of the shell's parent (read-only).
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.It Ev PS1
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@ -2263,51 +2261,6 @@ trapped) will have their default effect in a function.
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The EXIT trap, if set in a function, will be executed after the function
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returns.
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.El
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.Ss Strict Bourne shell mode
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When the
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.Ic sh
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option is enabled (see the
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.Ic set
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command),
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.Nm
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will behave like
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.Xr sh 1
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in the following ways:
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.Bl -bullet
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.It
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The parameter
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.Ic $_
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is not set to:
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.Pp
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.Bl -dash -compact
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.It
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the expanded alias' full programme path after entering commands
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that are tracked aliases
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.It
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the last argument on the command line after entering external
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commands
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.El
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.It
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File descriptors are left untouched when executing
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.Ic exec
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with no arguments.
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.It
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Backslash-escaped special characters are not substituted in
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.Ev PS1 .
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.It
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Sequences of
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.Sq ((...))
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are not interpreted as arithmetic expressions.
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.El
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.Pp
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This does not make
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.Nm
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a real bourne shell emulation, though.
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Access to many enhanced features is still available, and
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.Ql ^
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as synonym for
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.Ql |
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has probably not been in use since the 1980s anyway.
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.Ss Command execution
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After evaluation of command-line arguments, redirections, and parameter
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assignments, the type of command is determined: a special built-in, a
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@ -3316,10 +3269,6 @@ commands above for more details.
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The shell is a restricted shell.
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This option can only be used when the shell is invoked.
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See above for a description of what this means.
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.It Ic sh
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Enable strict Bourne shell mode (see
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.Sx Strict Bourne shell mode
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above).
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.It Ic vi
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Enable
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.Xr vi 1 Ns -like
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@ -5156,7 +5105,6 @@ Shell database.
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.Xr dup 2 ,
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.Xr execve 2 ,
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.Xr getgid 2 ,
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.Xr getpgrp 2 ,
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.Xr getuid 2 ,
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.Xr open 2 ,
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.Xr pipe 2 ,
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11
sh.h
11
sh.h
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@ -1,4 +1,4 @@
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/** $MirOS: src/bin/mksh/sh.h,v 1.13 2005/07/04 12:07:41 tg Exp $ */
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/** $MirOS: src/bin/mksh/sh.h,v 1.14 2005/07/04 12:34:24 tg Exp $ */
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/* $OpenBSD: sh.h,v 1.27 2005/03/28 21:33:04 deraadt Exp $ */
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/* $OpenBSD: shf.h,v 1.5 2005/03/30 17:16:37 deraadt Exp $ */
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/* $OpenBSD: table.h,v 1.6 2004/12/18 20:55:52 millert Exp $ */
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@ -190,10 +190,10 @@ enum sh_flag {
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FNOTIFY, /* -b: asynchronous job completion notification */
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FNOUNSET, /* -u: using an unset var is an error */
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FPHYSICAL, /* -o physical: don't do logical cds/pwds */
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FPOSIX, /* -o posix: be posixly correct */
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FPOSIX, /* -o posix (disabled) */
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FPRIVILEGED, /* -p: use suid_profile */
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FRESTRICTED, /* -r: restricted shell */
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FSH, /* -o sh: favor sh behaviour */
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FSH, /* -o sh (disabled) */
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FSTDIN, /* -s: (invocation) parse stdin */
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FTRACKALL, /* -h: create tracked aliases for all commands */
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FVERBOSE, /* -v: echo input */
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@ -204,7 +204,7 @@ enum sh_flag {
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FVIESCCOMPLETE, /* enable ESC as file name completion in command mode */
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FXTRACE, /* -x: execution trace */
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FTALKING_I, /* (internal): initial shell was interactive */
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FNFLAGS /* (place holder: how many flags are there) */
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FNFLAGS /* (place holder: how many flags are there) */
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};
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#define Flag(f) (shell_flags[(int) (f)])
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@ -626,13 +626,10 @@ extern const struct builtin shbuiltins [], kshbuiltins [];
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#define V_RANDOM 8
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#define V_HISTSIZE 9
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#define V_HISTFILE 10
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#define V_VISUAL 11
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#define V_EDITOR 12
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#define V_COLUMNS 13
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#define V_TMOUT 15
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#define V_TMPDIR 16
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#define V_LINENO 17
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#define V_PGRP 18
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/* values for set_prompt() */
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#define PS1 0 /* command */
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10
var.c
10
var.c
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@ -1,4 +1,4 @@
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/** $MirOS: src/bin/mksh/var.c,v 1.7 2005/07/04 12:07:41 tg Exp $ */
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/** $MirOS: src/bin/mksh/var.c,v 1.8 2005/07/04 12:34:24 tg Exp $ */
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/* $OpenBSD: var.c,v 1.26 2005/03/30 17:16:37 deraadt Exp $ */
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#include "sh.h"
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@ -6,7 +6,7 @@
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#include <ctype.h>
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#include <time.h>
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__RCSID("$MirOS: src/bin/mksh/var.c,v 1.7 2005/07/04 12:07:41 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/var.c,v 1.8 2005/07/04 12:34:24 tg Exp $");
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/*
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* Variables
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@ -98,7 +98,6 @@ initvar(void)
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{ "SECONDS", V_SECONDS },
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{ "TMOUT", V_TMOUT },
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{ "LINENO", V_LINENO },
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{ "PGRP", V_PGRP },
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{ NULL, 0 }
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};
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int i;
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@ -934,11 +933,6 @@ getspec(struct tbl *vp)
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setint(vp, (long) current_lineno + user_lineno);
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vp->flag |= SPECIAL;
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break;
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case V_PGRP:
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vp->flag &= ~SPECIAL;
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setint(vp, getpgrp());
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vp->flag |= SPECIAL;
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break;
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}
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}
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