do not fail build if MAXSYMLINKS isn't defined

[oweals/busybox.git] / shell / ash.c

diff --git a/shell/ash.c b/shell/ash.c
index fbbdb06b00a6b9d7f3e97b61ccabae199ac18c2e..71ef9a690f5941f567e35b7c911b7a248fde45d4 100644 (file)
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2286,7 +2286,7 @@ unsetvar(const char *s)
                        free(vp);
                        INT_ON;
                } else {
-                       setvar(s, 0, 0);
+                       setvar2(s, 0);
                        vp->flags &= ~VEXPORT;
                }
  ok:
@@ -6339,7 +6339,7 @@ subevalvar(char *p, char *varname, int strloc, int subtype,
 
        switch (subtype) {
        case VSASSIGN:
-               setvar(varname, startp, 0);
+               setvar2(varname, startp);
                amount = startp - expdest;
                STADJUST(amount, expdest);
                return startp;
@@ -8554,7 +8554,7 @@ evalfor(union node *n, int flags)
        loopnest++;
        flags &= EV_TESTED;
        for (sp = arglist.list; sp; sp = sp->next) {
-               setvar(n->nfor.var, sp->text, 0);
+               setvar2(n->nfor.var, sp->text);
                evaltree(n->nfor.body, flags);
                if (evalskip) {
                        if (evalskip == SKIPCONT && --skipcount <= 0) {
@@ -9033,6 +9033,9 @@ static int getoptscmd(int, char **) FAST_FUNC;
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
 static int helpcmd(int, char **) FAST_FUNC;
 #endif
+#if MAX_HISTORY
+static int historycmd(int, char **) FAST_FUNC;
+#endif
 #if ENABLE_SH_MATH_SUPPORT
 static int letcmd(int, char **) FAST_FUNC;
 #endif
@@ -9106,6 +9109,9 @@ static const struct builtincmd builtintab[] = {
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
        { BUILTIN_NOSPEC        "help"    , helpcmd    },
 #endif
+#if MAX_HISTORY
+       { BUILTIN_NOSPEC        "history" , historycmd },
+#endif
 #if JOBS
        { BUILTIN_REGULAR       "jobs"    , jobscmd    },
        { BUILTIN_REGULAR       "kill"    , killcmd    },
@@ -9445,7 +9451,7 @@ evalcommand(union node *cmd, int flags)
                 * '_' in 'vi' command mode during line editing...
                 * However I implemented that within libedit itself.
                 */
-               setvar("_", lastarg, 0);
+               setvar2("_", lastarg);
        }
        popstackmark(&smark);
 }
@@ -9651,7 +9657,12 @@ preadfd(void)
                 * _during_ shell execution, not only if it was set when
                 * shell was started. Therefore, re-check LANG every time:
                 */
-               reinit_unicode(lookupvar("LANG"));
+               {
+                       const char *s = lookupvar("LC_ALL");
+                       if (!s) s = lookupvar("LC_CTYPE");
+                       if (!s) s = lookupvar("LANG");
+                       reinit_unicode(s);
+               }
                nr = read_line_input(line_input_state, cmdedit_prompt, buf, IBUFSIZ, timeout);
                if (nr == 0) {
                        /* Ctrl+C pressed */
@@ -12258,8 +12269,10 @@ dotcmd(int argc, char **argv)
        /* "false; . empty_file; echo $?" should print 0, not 1: */
        exitstatus = 0;
 
+       /* This aborts if file isn't found, which is POSIXly correct.
+        * bash returns exitcode 1 instead.
+        */
        fullname = find_dot_file(argv[1]);
-
        argv += 2;
        argc -= 2;
        if (argc) { /* argc > 0, argv[0] != NULL */
@@ -12269,6 +12282,9 @@ dotcmd(int argc, char **argv)
                shellparam.p = argv;
        };
 
+       /* This aborts if file can't be opened, which is POSIXly correct.
+        * bash returns exitcode 1 instead.
+        */
        setinputfile(fullname, INPUT_PUSH_FILE);
        commandname = fullname;
        cmdloop(0);
@@ -12615,6 +12631,15 @@ helpcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 }
 #endif /* FEATURE_SH_EXTRA_QUIET */
 
+#if MAX_HISTORY
+static int FAST_FUNC
+historycmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
+{
+       show_history(line_input_state);
+       return EXIT_SUCCESS;
+}
+#endif
+
 /*
  * The export and readonly commands.
  */
@@ -12986,8 +13011,11 @@ init(void)
                        }
                }
 
-               setvar("PPID", utoa(getppid()), 0);
-
+               setvar2("PPID", utoa(getppid()));
+#if ENABLE_ASH_BASH_COMPAT
+               p = lookupvar("SHLVL");
+               setvar2("SHLVL", utoa(p ? atoi(p) + 1 : 1));
+#endif
                p = lookupvar("PWD");
                if (p) {
                        if (*p != '/' || stat(p, &st1) || stat(".", &st2)
@@ -13241,7 +13269,7 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
                                hp = lookupvar("HOME");
                                if (hp) {
                                        hp = concat_path_file(hp, ".ash_history");
-                                       setvar("HISTFILE", hp, 0);
+                                       setvar2("HISTFILE", hp);
                                        free((char*)hp);
                                        hp = lookupvar("HISTFILE");
                                }