diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/ash.c | 63 |
1 files changed, 28 insertions, 35 deletions
diff --git a/shell/ash.c b/shell/ash.c index 5570057e9..5bb10e5cb 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -2477,24 +2477,6 @@ unsetvar(const char *s) } /* - * Process a linked list of variable assignments. - */ -static void -listsetvar(struct strlist *list_set_var, int flags) -{ - struct strlist *lp = list_set_var; - - if (!lp) - return; - INT_OFF; - do { - setvareq(lp->text, flags); - lp = lp->next; - } while (lp); - INT_ON; -} - -/* * Generate a list of variables satisfying the given conditions. */ #if !ENABLE_FEATURE_SH_NOFORK @@ -9810,7 +9792,7 @@ evalfun(struct funcnode *func, int argc, char **argv, int flags) * (options will be restored on return from the function). */ static void -mklocal(char *name) +mklocal(char *name, int flags) { struct localvar *lvp; struct var **vpp; @@ -9847,9 +9829,9 @@ mklocal(char *name) if (vp == NULL) { /* variable did not exist yet */ if (eq) - vp = setvareq(name, VSTRFIXED); + vp = setvareq(name, VSTRFIXED | flags); else - vp = setvar(name, NULL, VSTRFIXED); + vp = setvar(name, NULL, VSTRFIXED | flags); lvp->flags = VUNSET; } else { lvp->text = vp->var_text; @@ -9859,7 +9841,7 @@ mklocal(char *name) */ vp->flags |= VSTRFIXED|VTEXTFIXED; if (eq) - setvareq(name, 0); + setvareq(name, flags); else /* "local VAR" unsets VAR: */ setvar0(name, NULL); @@ -9885,7 +9867,7 @@ localcmd(int argc UNUSED_PARAM, char **argv) argv = argptr; while ((name = *argv++) != NULL) { - mklocal(name); + mklocal(name, 0); } return 0; } @@ -10166,6 +10148,8 @@ evalcommand(union node *cmd, int flags) int status; char **nargv; smallint cmd_is_exec; + int vflags; + int vlocal; errlinno = lineno = cmd->ncmd.linno; if (funcline) @@ -10173,7 +10157,6 @@ evalcommand(union node *cmd, int flags) /* First expand the arguments. */ TRACE(("evalcommand(0x%lx, %d) called\n", (long)cmd, flags)); - localvar_stop = pushlocalvars(); file_stop = g_parsefile; back_exitstatus = 0; @@ -10187,6 +10170,8 @@ evalcommand(union node *cmd, int flags) cmd_flag = 0; cmd_is_exec = 0; spclbltin = -1; + vflags = 0; + vlocal = 0; path = NULL; argc = 0; @@ -10199,6 +10184,8 @@ evalcommand(union node *cmd, int flags) find_command(arglist.list->text, &cmdentry, cmd_flag | DO_REGBLTIN, pathval()); + vlocal++; + /* implement bltin and command here */ if (cmdentry.cmdtype != CMDBUILTIN) break; @@ -10206,6 +10193,7 @@ evalcommand(union node *cmd, int flags) pseudovarflag = IS_BUILTIN_ASSIGN(cmdentry.u.cmd); if (spclbltin < 0) { spclbltin = IS_BUILTIN_SPECIAL(cmdentry.u.cmd); + vlocal = !spclbltin; } cmd_is_exec = cmdentry.u.cmd == EXECCMD; if (cmdentry.u.cmd != COMMANDCMD) @@ -10224,6 +10212,9 @@ evalcommand(union node *cmd, int flags) for (sp = arglist.list; sp; sp = sp->next) argc++; + + if (cmd_is_exec && argc > 1) + vflags = VEXPORT; } /* Reserve one extra spot at the front for shellexec. */ @@ -10254,6 +10245,7 @@ evalcommand(union node *cmd, int flags) status = redirectsafe(cmd->ncmd.redirect, REDIR_PUSH | REDIR_SAVEFD2); if (status) { + vlocal = 0; bail: exitstatus = status; @@ -10264,13 +10256,20 @@ evalcommand(union node *cmd, int flags) goto out; } + localvar_stop = NULL; + if (vlocal) + localvar_stop = pushlocalvars(); + for (argp = cmd->ncmd.assign; argp; argp = argp->narg.next) { struct strlist **spp; spp = varlist.lastp; expandarg(argp, &varlist, EXP_VARTILDE); - mklocal((*spp)->text); + if (vlocal) + mklocal((*spp)->text, VEXPORT); + else + setvareq((*spp)->text, vflags); } /* Print the command if xflag is set. */ @@ -10313,8 +10312,8 @@ evalcommand(union node *cmd, int flags) if (cmdentry.cmdtype != CMDBUILTIN || !(IS_BUILTIN_REGULAR(cmdentry.u.cmd)) ) { - find_command(argv[0], &cmdentry, cmd_flag | DO_ERR, - path ? path : pathval()); + path = path ? path : pathval(); + find_command(argv[0], &cmdentry, cmd_flag | DO_ERR, path); } jp = NULL; @@ -10385,17 +10384,10 @@ evalcommand(union node *cmd, int flags) FORCE_INT_ON; /* fall through to exec'ing external program */ } - listsetvar(varlist.list, VEXPORT|VSTACK); - path = path ? path : pathval(); shellexec(argv[0], argv, path, cmdentry.u.index); /* NOTREACHED */ } /* default */ case CMDBUILTIN: - if (spclbltin > 0 || argc == 0) { - poplocalvars(1); - if (cmd_is_exec && argc > 1) - listsetvar(varlist.list, VEXPORT); - } if (evalbltin(cmdentry.u.cmd, argc, argv, flags) && !(exception_type == EXERROR && spclbltin <= 0) ) { @@ -10418,7 +10410,8 @@ evalcommand(union node *cmd, int flags) popredir(/*drop:*/ cmd_is_exec); unwindredir(redir_stop); unwindfiles(file_stop); - unwindlocalvars(localvar_stop); + if (vlocal) + unwindlocalvars(localvar_stop); if (lastarg) { /* dsl: I think this is intended to be used to support * '_' in 'vi' command mode during line editing... |