Add in a shell tagline (per lash/hush behavior) to make it easier
to know which shell is in use. Add in 'help' to list available builtins, and fixup msh so it can do STANDALONE_SHELL. -Erik
This commit is contained in:
Eric Andersen
parent
b7e6f13b3c
commit
1c03923b0b
61
ash.c
61
ash.c
@ -1603,6 +1603,7 @@ static int exitcmd (int, char **);
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static int exportcmd (int, char **);
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static int histcmd (int, char **);
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static int hashcmd (int, char **);
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static int helpcmd (int, char **);
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static int jobscmd (int, char **);
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static int localcmd (int, char **);
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#ifndef BB_PWD
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@ -1704,6 +1705,7 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_REGULAR "getopts", getoptscmd },
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#endif
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{ BUILTIN_NOSPEC "hash", hashcmd },
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{ BUILTIN_NOSPEC "help", helpcmd },
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{ BUILTIN_REGULAR "jobs", jobscmd },
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#ifdef JOBS
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{ BUILTIN_REGULAR "kill", killcmd },
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@ -3274,6 +3276,7 @@ static void
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setinteractive(int on)
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{
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static int is_interactive;
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static int do_banner=0;
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if (on == is_interactive)
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return;
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@ -3282,6 +3285,12 @@ setinteractive(int on)
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setsignal(SIGTERM);
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chkmail(1);
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is_interactive = on;
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if (do_banner==0 && is_interactive) {
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/* Looks like they want an interactive shell */
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printf( "\n\n" BB_BANNER " Built-in shell (ash)\n");
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printf( "Enter 'help' for a list of built-in commands.\n\n");
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do_banner=1;
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}
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}
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static void
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@ -3802,6 +3811,51 @@ printentry(cmdp, verbose)
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/*** List the available builtins ***/
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static int helpcmd(int argc, char** argv)
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{
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int col, i;
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const struct builtincmd *x;
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printf("\nBuilt-in commands:\n");
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printf("-------------------\n");
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for (col=0, i=0, x = builtincmds; i < NUMBUILTINS; x++, i++) {
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if (!x->name || ! (x->name+1))
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continue;
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col += printf("%s%s", ((col == 0) ? "\t" : " "),
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(x->name+1));
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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{
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const struct BB_applet *applet;
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extern const struct BB_applet applets[];
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extern const size_t NUM_APPLETS;
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for (i=0, applet = applets; i < NUM_APPLETS; applet++, i++) {
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if (!applet->name)
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continue;
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col += printf("%s%s", ((col == 0) ? "\t" : " "),
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applet->name);
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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}
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#endif
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printf("\n\n");
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return EXIT_SUCCESS;
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}
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/*
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* Resolve a command name. If you change this routine, you may have to
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* change the shellexec routine as well.
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@ -7755,6 +7809,11 @@ shell_main(argc, argv)
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EXECCMD = find_builtin("exec");
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EVALCMD = find_builtin("eval");
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#ifndef BB_FEATURE_SH_FANCY_PROMPT
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unsetenv("PS1");
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unsetenv("PS2");
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#endif
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#if PROFILE
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monitor(4, etext, profile_buf, sizeof profile_buf, 50);
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#endif
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@ -13088,7 +13147,7 @@ findvar(struct var **vpp, const char *name)
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/*
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* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
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* This file contains code for the times builtin.
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* $Id: ash.c,v 1.6 2001/07/06 04:26:23 andersen Exp $
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* $Id: ash.c,v 1.7 2001/07/07 00:05:55 andersen Exp $
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*/
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static int timescmd (int argc, char **argv)
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{
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128
msh.c
128
msh.c
@ -497,6 +497,7 @@ static struct op **find1case (struct op *t, char *w );
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static struct op *findcase (struct op *t, char *w );
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static void brkset(struct brkcon *bc );
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static int dolabel(void);
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static int dohelp(void);
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static int dochdir(struct op *t );
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static int doshift(struct op *t );
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static int dologin(struct op *t );
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@ -592,30 +593,31 @@ static struct res restab[] = {
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};
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struct builtin {
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char *command;
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int (*fn)();
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struct builtincmd {
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const char *name;
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int (*builtinfunc)();
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};
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static struct builtin builtin[] = {
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static const struct builtincmd builtincmds[] = {
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{".", dodot},
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{":", dolabel},
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{"cd", dochdir},
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{"shift", doshift},
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{"exec", doexec},
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{"wait", dowait},
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{"read", doread},
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{"eval", doeval},
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{"trap", dotrap},
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{"break", dobreak},
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{"cd", dochdir},
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{"continue",docontinue},
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{"eval", doeval},
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{"exec", doexec},
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{"exit", doexit},
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{"export", doexport},
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{"readonly",doreadonly},
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{"set", doset},
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{".", dodot},
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{"umask", doumask},
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{"help", dohelp},
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{"login", dologin},
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{"newgrp", dologin},
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{"read", doread},
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{"readonly",doreadonly},
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{"set", doset},
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{"shift", doshift},
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{"times", dotimes},
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{"trap", dotrap},
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{"umask", doumask},
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{"wait", dowait},
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{0,0}
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};
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@ -731,14 +733,18 @@ extern int shell_main(int argc, char **argv)
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setval(ifs, " \t\n");
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prompt = lookup("PS1");
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#ifdef BB_FEATURE_SH_FANCY_PROMPT
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if (prompt->value == null)
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#endif
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setval(prompt, "$ ");
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if (geteuid() == 0) {
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setval(prompt, "# ");
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prompt->status &= ~EXPORT;
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}
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cprompt = lookup("PS2");
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#ifdef BB_FEATURE_SH_FANCY_PROMPT
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if (cprompt->value == null)
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#endif
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setval(cprompt, "> ");
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iof = filechar;
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@ -794,8 +800,11 @@ extern int shell_main(int argc, char **argv)
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setdash();
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if (e.iop < iostack) {
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PUSHIO(afile, 0, iof);
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if (isatty(0) && isatty(1) && !cflag)
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if (isatty(0) && isatty(1) && !cflag) {
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interactive++;
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printf( "\n\n" BB_BANNER " Built-in shell (msh)\n");
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printf( "Enter 'help' for a list of built-in commands.\n\n");
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}
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}
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signal(SIGQUIT, qflag);
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if (name && name[0] == '-') {
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@ -2314,14 +2323,14 @@ int act;
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switch(t->type) {
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case TPAREN:
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case TCOM:
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{
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int child;
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rv = forkexec(t, pin, pout, act, wp, &child);
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if (child) {
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exstat = rv;
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leave();
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{
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int child;
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rv = forkexec(t, pin, pout, act, wp, &child);
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if (child) {
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exstat = rv;
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leave();
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}
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}
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}
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break;
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case TPIPE:
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@ -2828,6 +2837,21 @@ char *c, **v, **envp;
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register char *sp, *tp;
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int eacces = 0, asis = 0;
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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char *name = c;
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#ifdef BB_FEATURE_SH_APPLETS_ALWAYS_WIN
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name = get_last_path_component(name);
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#endif
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optind = 1;
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if (find_applet_by_name(name)) {
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/* We have to exec here since we vforked. Running
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* run_applet_by_name() won't work and bad things
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* will happen. */
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execve("/proc/self/exe", v, envp);
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execve("busybox", v, envp);
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}
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#endif
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sp = any('/', c)? "": path->value;
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asis = *sp == '\0';
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while (asis || *sp != '\0') {
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@ -2842,6 +2866,8 @@ char *c, **v, **envp;
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*tp++ = '/';
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for (i = 0; (*tp++ = c[i++]) != '\0';)
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;
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fprintf(stderr, "calling exec\n");
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execve(e.linep, v, envp);
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switch (errno) {
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case ENOEXEC:
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@ -2917,6 +2943,49 @@ int (*f)();
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* built-in commands: doX
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*/
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static int dohelp()
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{
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int col;
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const struct builtincmd *x;
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printf("\nBuilt-in commands:\n");
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printf("-------------------\n");
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for (col=0, x = builtincmds; x->builtinfunc != NULL; x++) {
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if (!x->name)
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continue;
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col += printf("%s%s", ((col == 0) ? "\t" : " "), x->name);
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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{
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int i;
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const struct BB_applet *applet;
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extern const struct BB_applet applets[];
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extern const size_t NUM_APPLETS;
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for (i=0, applet = applets; i < NUM_APPLETS; applet++, i++) {
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if (!applet->name)
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continue;
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col += printf("%s%s", ((col == 0) ? "\t" : " "),
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applet->name);
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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}
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#endif
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printf("\n\n");
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return EXIT_SUCCESS;
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}
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static int
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dolabel()
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{
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@ -3341,7 +3410,6 @@ int out;
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/*
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* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
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* This file contains code for the times builtin.
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* $Id: msh.c,v 1.1 2001/06/29 04:57:14 andersen Exp $
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*/
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static int dotimes ()
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{
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@ -3362,14 +3430,14 @@ static int dotimes ()
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}
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static int (*inbuilt(s))()
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register char *s;
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static int (*inbuilt(char *s))()
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{
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register struct builtin *bp;
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const struct builtincmd *bp;
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for (bp = builtincmds; bp->name != NULL; bp++)
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if (strcmp(bp->name, s) == 0)
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return(bp->builtinfunc);
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for (bp = builtin; bp->command != NULL; bp++)
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if (strcmp(bp->command, s) == 0)
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return(bp->fn);
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return((int(*)())NULL);
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}
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9
sh.c
9
sh.c
@ -20,6 +20,15 @@
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#include "busybox.h"
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/* This is to make testing things a bit simpler (to avoid
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* a full recompile) till we get the new build system in place */
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#if 0
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#undef BB_FEATURE_LASH
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#undef BB_FEATURE_HUSH
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#undef BB_FEATURE_MSH
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#define BB_FEATURE_ASH
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#endif
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#if defined BB_FEATURE_ASH
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#include "ash.c"
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#elif defined BB_FEATURE_MSH
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61
shell/ash.c
61
shell/ash.c
@ -1603,6 +1603,7 @@ static int exitcmd (int, char **);
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static int exportcmd (int, char **);
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static int histcmd (int, char **);
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static int hashcmd (int, char **);
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static int helpcmd (int, char **);
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static int jobscmd (int, char **);
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static int localcmd (int, char **);
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#ifndef BB_PWD
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@ -1704,6 +1705,7 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_REGULAR "getopts", getoptscmd },
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#endif
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{ BUILTIN_NOSPEC "hash", hashcmd },
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{ BUILTIN_NOSPEC "help", helpcmd },
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{ BUILTIN_REGULAR "jobs", jobscmd },
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#ifdef JOBS
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{ BUILTIN_REGULAR "kill", killcmd },
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@ -3274,6 +3276,7 @@ static void
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setinteractive(int on)
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{
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static int is_interactive;
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static int do_banner=0;
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if (on == is_interactive)
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return;
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@ -3282,6 +3285,12 @@ setinteractive(int on)
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setsignal(SIGTERM);
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chkmail(1);
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is_interactive = on;
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if (do_banner==0 && is_interactive) {
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/* Looks like they want an interactive shell */
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printf( "\n\n" BB_BANNER " Built-in shell (ash)\n");
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printf( "Enter 'help' for a list of built-in commands.\n\n");
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do_banner=1;
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}
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}
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static void
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@ -3802,6 +3811,51 @@ printentry(cmdp, verbose)
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/*** List the available builtins ***/
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static int helpcmd(int argc, char** argv)
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{
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int col, i;
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const struct builtincmd *x;
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printf("\nBuilt-in commands:\n");
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printf("-------------------\n");
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for (col=0, i=0, x = builtincmds; i < NUMBUILTINS; x++, i++) {
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if (!x->name || ! (x->name+1))
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continue;
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col += printf("%s%s", ((col == 0) ? "\t" : " "),
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(x->name+1));
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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#ifdef BB_FEATURE_SH_STANDALONE_SHELL
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{
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const struct BB_applet *applet;
|
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extern const struct BB_applet applets[];
|
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extern const size_t NUM_APPLETS;
|
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|
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for (i=0, applet = applets; i < NUM_APPLETS; applet++, i++) {
|
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if (!applet->name)
|
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continue;
|
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col += printf("%s%s", ((col == 0) ? "\t" : " "),
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applet->name);
|
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if (col > 60) {
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printf("\n");
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col = 0;
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}
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}
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}
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#endif
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printf("\n\n");
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return EXIT_SUCCESS;
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}
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|
||||
|
||||
|
||||
/*
|
||||
* Resolve a command name. If you change this routine, you may have to
|
||||
* change the shellexec routine as well.
|
||||
@ -7755,6 +7809,11 @@ shell_main(argc, argv)
|
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EXECCMD = find_builtin("exec");
|
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EVALCMD = find_builtin("eval");
|
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|
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#ifndef BB_FEATURE_SH_FANCY_PROMPT
|
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unsetenv("PS1");
|
||||
unsetenv("PS2");
|
||||
#endif
|
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|
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#if PROFILE
|
||||
monitor(4, etext, profile_buf, sizeof profile_buf, 50);
|
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#endif
|
||||
@ -13088,7 +13147,7 @@ findvar(struct var **vpp, const char *name)
|
||||
/*
|
||||
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
|
||||
* This file contains code for the times builtin.
|
||||
* $Id: ash.c,v 1.6 2001/07/06 04:26:23 andersen Exp $
|
||||
* $Id: ash.c,v 1.7 2001/07/07 00:05:55 andersen Exp $
|
||||
*/
|
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static int timescmd (int argc, char **argv)
|
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{
|
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|
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128
shell/msh.c
128
shell/msh.c
@ -497,6 +497,7 @@ static struct op **find1case (struct op *t, char *w );
|
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static struct op *findcase (struct op *t, char *w );
|
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static void brkset(struct brkcon *bc );
|
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static int dolabel(void);
|
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static int dohelp(void);
|
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static int dochdir(struct op *t );
|
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static int doshift(struct op *t );
|
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static int dologin(struct op *t );
|
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@ -592,30 +593,31 @@ static struct res restab[] = {
|
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};
|
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|
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|
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struct builtin {
|
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char *command;
|
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int (*fn)();
|
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struct builtincmd {
|
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const char *name;
|
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int (*builtinfunc)();
|
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};
|
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static struct builtin builtin[] = {
|
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static const struct builtincmd builtincmds[] = {
|
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{".", dodot},
|
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{":", dolabel},
|
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{"cd", dochdir},
|
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{"shift", doshift},
|
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{"exec", doexec},
|
||||
{"wait", dowait},
|
||||
{"read", doread},
|
||||
{"eval", doeval},
|
||||
{"trap", dotrap},
|
||||
{"break", dobreak},
|
||||
{"cd", dochdir},
|
||||
{"continue",docontinue},
|
||||
{"eval", doeval},
|
||||
{"exec", doexec},
|
||||
{"exit", doexit},
|
||||
{"export", doexport},
|
||||
{"readonly",doreadonly},
|
||||
{"set", doset},
|
||||
{".", dodot},
|
||||
{"umask", doumask},
|
||||
{"help", dohelp},
|
||||
{"login", dologin},
|
||||
{"newgrp", dologin},
|
||||
{"read", doread},
|
||||
{"readonly",doreadonly},
|
||||
{"set", doset},
|
||||
{"shift", doshift},
|
||||
{"times", dotimes},
|
||||
{"trap", dotrap},
|
||||
{"umask", doumask},
|
||||
{"wait", dowait},
|
||||
{0,0}
|
||||
};
|
||||
|
||||
@ -731,14 +733,18 @@ extern int shell_main(int argc, char **argv)
|
||||
setval(ifs, " \t\n");
|
||||
|
||||
prompt = lookup("PS1");
|
||||
#ifdef BB_FEATURE_SH_FANCY_PROMPT
|
||||
if (prompt->value == null)
|
||||
#endif
|
||||
setval(prompt, "$ ");
|
||||
if (geteuid() == 0) {
|
||||
setval(prompt, "# ");
|
||||
prompt->status &= ~EXPORT;
|
||||
}
|
||||
cprompt = lookup("PS2");
|
||||
#ifdef BB_FEATURE_SH_FANCY_PROMPT
|
||||
if (cprompt->value == null)
|
||||
#endif
|
||||
setval(cprompt, "> ");
|
||||
|
||||
iof = filechar;
|
||||
@ -794,8 +800,11 @@ extern int shell_main(int argc, char **argv)
|
||||
setdash();
|
||||
if (e.iop < iostack) {
|
||||
PUSHIO(afile, 0, iof);
|
||||
if (isatty(0) && isatty(1) && !cflag)
|
||||
if (isatty(0) && isatty(1) && !cflag) {
|
||||
interactive++;
|
||||
printf( "\n\n" BB_BANNER " Built-in shell (msh)\n");
|
||||
printf( "Enter 'help' for a list of built-in commands.\n\n");
|
||||
}
|
||||
}
|
||||
signal(SIGQUIT, qflag);
|
||||
if (name && name[0] == '-') {
|
||||
@ -2314,14 +2323,14 @@ int act;
|
||||
switch(t->type) {
|
||||
case TPAREN:
|
||||
case TCOM:
|
||||
{
|
||||
int child;
|
||||
rv = forkexec(t, pin, pout, act, wp, &child);
|
||||
if (child) {
|
||||
exstat = rv;
|
||||
leave();
|
||||
{
|
||||
int child;
|
||||
rv = forkexec(t, pin, pout, act, wp, &child);
|
||||
if (child) {
|
||||
exstat = rv;
|
||||
leave();
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case TPIPE:
|
||||
@ -2828,6 +2837,21 @@ char *c, **v, **envp;
|
||||
register char *sp, *tp;
|
||||
int eacces = 0, asis = 0;
|
||||
|
||||
#ifdef BB_FEATURE_SH_STANDALONE_SHELL
|
||||
char *name = c;
|
||||
#ifdef BB_FEATURE_SH_APPLETS_ALWAYS_WIN
|
||||
name = get_last_path_component(name);
|
||||
#endif
|
||||
optind = 1;
|
||||
if (find_applet_by_name(name)) {
|
||||
/* We have to exec here since we vforked. Running
|
||||
* run_applet_by_name() won't work and bad things
|
||||
* will happen. */
|
||||
execve("/proc/self/exe", v, envp);
|
||||
execve("busybox", v, envp);
|
||||
}
|
||||
#endif
|
||||
|
||||
sp = any('/', c)? "": path->value;
|
||||
asis = *sp == '\0';
|
||||
while (asis || *sp != '\0') {
|
||||
@ -2842,6 +2866,8 @@ char *c, **v, **envp;
|
||||
*tp++ = '/';
|
||||
for (i = 0; (*tp++ = c[i++]) != '\0';)
|
||||
;
|
||||
|
||||
fprintf(stderr, "calling exec\n");
|
||||
execve(e.linep, v, envp);
|
||||
switch (errno) {
|
||||
case ENOEXEC:
|
||||
@ -2917,6 +2943,49 @@ int (*f)();
|
||||
* built-in commands: doX
|
||||
*/
|
||||
|
||||
static int dohelp()
|
||||
{
|
||||
int col;
|
||||
const struct builtincmd *x;
|
||||
|
||||
printf("\nBuilt-in commands:\n");
|
||||
printf("-------------------\n");
|
||||
|
||||
for (col=0, x = builtincmds; x->builtinfunc != NULL; x++) {
|
||||
if (!x->name)
|
||||
continue;
|
||||
col += printf("%s%s", ((col == 0) ? "\t" : " "), x->name);
|
||||
if (col > 60) {
|
||||
printf("\n");
|
||||
col = 0;
|
||||
}
|
||||
}
|
||||
#ifdef BB_FEATURE_SH_STANDALONE_SHELL
|
||||
{
|
||||
int i;
|
||||
const struct BB_applet *applet;
|
||||
extern const struct BB_applet applets[];
|
||||
extern const size_t NUM_APPLETS;
|
||||
|
||||
for (i=0, applet = applets; i < NUM_APPLETS; applet++, i++) {
|
||||
if (!applet->name)
|
||||
continue;
|
||||
|
||||
col += printf("%s%s", ((col == 0) ? "\t" : " "),
|
||||
applet->name);
|
||||
if (col > 60) {
|
||||
printf("\n");
|
||||
col = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
printf("\n\n");
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int
|
||||
dolabel()
|
||||
{
|
||||
@ -3341,7 +3410,6 @@ int out;
|
||||
/*
|
||||
* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
|
||||
* This file contains code for the times builtin.
|
||||
* $Id: msh.c,v 1.1 2001/06/29 04:57:14 andersen Exp $
|
||||
*/
|
||||
static int dotimes ()
|
||||
{
|
||||
@ -3362,14 +3430,14 @@ static int dotimes ()
|
||||
}
|
||||
|
||||
|
||||
static int (*inbuilt(s))()
|
||||
register char *s;
|
||||
static int (*inbuilt(char *s))()
|
||||
{
|
||||
register struct builtin *bp;
|
||||
const struct builtincmd *bp;
|
||||
|
||||
for (bp = builtincmds; bp->name != NULL; bp++)
|
||||
if (strcmp(bp->name, s) == 0)
|
||||
return(bp->builtinfunc);
|
||||
|
||||
for (bp = builtin; bp->command != NULL; bp++)
|
||||
if (strcmp(bp->command, s) == 0)
|
||||
return(bp->fn);
|
||||
return((int(*)())NULL);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user