summaryrefslogtreecommitdiffstats
path: root/usr.bin/make/shell.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/make/shell.c')
-rw-r--r--usr.bin/make/shell.c472
1 files changed, 0 insertions, 472 deletions
diff --git a/usr.bin/make/shell.c b/usr.bin/make/shell.c
deleted file mode 100644
index c1f82d1..0000000
--- a/usr.bin/make/shell.c
+++ /dev/null
@@ -1,472 +0,0 @@
-/*-
- * Copyright (c) 1988, 1989, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- * Copyright (c) 1988, 1989 by Adam de Boor
- * Copyright (c) 1989 by Berkeley Softworks
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Adam de Boor.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/queue.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "parse.h"
-#include "pathnames.h"
-#include "shell.h"
-#include "util.h"
-
-/*
- * Descriptions for various shells. What the list of builtins should contain
- * is debatable: either all builtins or only those which may specified on
- * a single line without use of meta-characters. For correct makefiles that
- * contain only correct command lines there is no difference. But if a command
- * line, for example, is: 'if -foo bar' and there is an executable named 'if'
- * in the path, the first possibility would execute that 'if' while in the
- * second case the shell would give an error. Histerically only a small
- * subset of the builtins and no reserved words where given in the list which
- * corresponds roughly to the first variant. So go with this but add missing
- * words.
- */
-#define CSH_BUILTINS \
- "alias cd eval exec exit read set ulimit unalias " \
- "umask unset wait"
-
-#define SH_BUILTINS \
- "alias cd eval exec exit read set ulimit unalias " \
- "umask unset wait"
-
-#define CSH_META "#=|^(){};&<>*?[]:$`\\@\n"
-#define SH_META "#=|^(){};&<>*?[]:$`\\\n"
-
-static const char *const shells_init[] = {
- /*
- * CSH description. The csh can do echo control by playing
- * with the setting of the 'echo' shell variable. Sadly,
- * however, it is unable to do error control nicely.
- */
- "name=csh path='" PATH_DEFSHELLDIR "/csh' "
- "quiet='unset verbose' echo='set verbose' filter='unset verbose' "
- "hasErrCtl=N check='echo \"%s\"\n' ignore='csh -c \"%s || exit 0\"' "
- "echoFlag=v errFlag=e "
- "meta='" CSH_META "' builtins='" CSH_BUILTINS "'",
-
- /*
- * SH description. Echo control is also possible and, under
- * sun UNIX anyway, one can even control error checking.
- */
- "name=sh path='" PATH_DEFSHELLDIR "/sh' "
- "quiet='set -' echo='set -v' filter='set -' "
- "hasErrCtl=Y check='set -e' ignore='set +e' "
- "echoFlag=v errFlag=e "
- "meta='" SH_META "' builtins='" SH_BUILTINS "'",
-
- /*
- * KSH description. The Korn shell has a superset of
- * the Bourne shell's functionality. There are probably builtins
- * missing here.
- */
- "name=ksh path='" PATH_DEFSHELLDIR "/ksh' "
- "quiet='set -' echo='set -v' filter='set -' "
- "hasErrCtl=Y check='set -e' ignore='set +e' "
- "echoFlag=v errFlag=e "
- "meta='" SH_META "' builtins='" SH_BUILTINS "' unsetenv=T",
-
- NULL
-};
-
-/*
- * This is the shell to which we pass all commands in the Makefile.
- * It is set by the Job_ParseShell function.
- */
-struct Shell *commandShell;
-
-/*
- * This is the list of all known shells.
- */
-static struct Shells shells = TAILQ_HEAD_INITIALIZER(shells);
-
-void ShellDump(const struct Shell *) __unused;
-
-/**
- * Helper function for sorting the builtin list alphabetically.
- */
-static int
-sort_builtins(const void *p1, const void *p2)
-{
-
- return (strcmp(*(const char* const*)p1, *(const char* const*)p2));
-}
-
-/**
- * Free a shell structure and all associated strings.
- */
-static void
-ShellFree(struct Shell *sh)
-{
-
- if (sh != NULL) {
- free(sh->name);
- free(sh->path);
- free(sh->echoOff);
- free(sh->echoOn);
- free(sh->noPrint);
- free(sh->errCheck);
- free(sh->ignErr);
- free(sh->echo);
- free(sh->exit);
- ArgArray_Done(&sh->builtins);
- free(sh->meta);
- free(sh);
- }
-}
-
-/**
- * Dump a shell specification to stderr.
- */
-void
-ShellDump(const struct Shell *sh)
-{
- int i;
-
- fprintf(stderr, "Shell %p:\n", sh);
- fprintf(stderr, " name='%s' path='%s'\n", sh->name, sh->path);
- fprintf(stderr, " hasEchoCtl=%d echoOff='%s' echoOn='%s'\n",
- sh->hasEchoCtl, sh->echoOff, sh->echoOn);
- fprintf(stderr, " noPrint='%s'\n", sh->noPrint);
- fprintf(stderr, " hasErrCtl=%d errCheck='%s' ignErr='%s'\n",
- sh->hasErrCtl, sh->errCheck, sh->ignErr);
- fprintf(stderr, " echo='%s' exit='%s'\n", sh->echo, sh->exit);
- fprintf(stderr, " builtins=%d\n", sh->builtins.argc - 1);
- for (i = 1; i < sh->builtins.argc; i++)
- fprintf(stderr, " '%s'", sh->builtins.argv[i]);
- fprintf(stderr, "\n meta='%s'\n", sh->meta);
- fprintf(stderr, " unsetenv=%d\n", sh->unsetenv);
-}
-
-/**
- * Parse a shell specification line and return the new Shell structure.
- * In case of an error a message is printed and NULL is returned.
- */
-static struct Shell *
-ShellParseSpec(const char *spec, Boolean *fullSpec)
-{
- ArgArray aa;
- struct Shell *sh;
- char *eq;
- char *keyw;
- int arg;
-
- *fullSpec = FALSE;
-
- sh = emalloc(sizeof(*sh));
- memset(sh, 0, sizeof(*sh));
- ArgArray_Init(&sh->builtins);
-
- /*
- * Parse the specification by keyword but skip the first word
- */
- brk_string(&aa, spec, TRUE);
-
- for (arg = 1; arg < aa.argc; arg++) {
- /*
- * Split keyword and value
- */
- keyw = aa.argv[arg];
- if ((eq = strchr(keyw, '=')) == NULL) {
- Parse_Error(PARSE_FATAL, "missing '=' in shell "
- "specification keyword '%s'", keyw);
- ArgArray_Done(&aa);
- ShellFree(sh);
- return (NULL);
- }
- *eq++ = '\0';
-
- if (strcmp(keyw, "path") == 0) {
- free(sh->path);
- sh->path = estrdup(eq);
- } else if (strcmp(keyw, "name") == 0) {
- free(sh->name);
- sh->name = estrdup(eq);
- } else if (strcmp(keyw, "quiet") == 0) {
- free(sh->echoOff);
- sh->echoOff = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "echo") == 0) {
- free(sh->echoOn);
- sh->echoOn = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "filter") == 0) {
- free(sh->noPrint);
- sh->noPrint = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "echoFlag") == 0) {
- free(sh->echo);
- sh->echo = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "errFlag") == 0) {
- free(sh->exit);
- sh->exit = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "hasErrCtl") == 0) {
- sh->hasErrCtl = (*eq == 'Y' || *eq == 'y' ||
- *eq == 'T' || *eq == 't');
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "check") == 0) {
- free(sh->errCheck);
- sh->errCheck = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "ignore") == 0) {
- free(sh->ignErr);
- sh->ignErr = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "builtins") == 0) {
- ArgArray_Done(&sh->builtins);
- brk_string(&sh->builtins, eq, TRUE);
- qsort(sh->builtins.argv + 1, sh->builtins.argc - 1,
- sizeof(char *), sort_builtins);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "meta") == 0) {
- free(sh->meta);
- sh->meta = estrdup(eq);
- *fullSpec = TRUE;
- } else if (strcmp(keyw, "unsetenv") == 0) {
- sh->unsetenv = (*eq == 'Y' || *eq == 'y' ||
- *eq == 'T' || *eq == 't');
- *fullSpec = TRUE;
- } else {
- Parse_Error(PARSE_FATAL, "unknown keyword in shell "
- "specification '%s'", keyw);
- ArgArray_Done(&aa);
- ShellFree(sh);
- return (NULL);
- }
- }
- ArgArray_Done(&aa);
-
- /*
- * Some checks (could be more)
- */
- if (*fullSpec) {
- if ((sh->echoOn != NULL) ^ (sh->echoOff != NULL)) {
- Parse_Error(PARSE_FATAL, "Shell must have either both "
- "echoOff and echoOn or none of them");
- ShellFree(sh);
- return (NULL);
- }
-
- if (sh->echoOn != NULL && sh->echoOff != NULL)
- sh->hasEchoCtl = TRUE;
- }
-
- return (sh);
-}
-
-/**
- * Parse the builtin shell specifications and put them into the shell
- * list. Then select the default shell to be the current shell. This
- * is called from main() before any parsing (including MAKEFLAGS and
- * command line) is done.
- */
-void
-Shell_Init(void)
-{
- int i;
- struct Shell *sh;
- Boolean fullSpec;
-
- for (i = 0; shells_init[i] != NULL; i++) {
- sh = ShellParseSpec(shells_init[i], &fullSpec);
- TAILQ_INSERT_TAIL(&shells, sh, link);
- if (strcmp(sh->name, DEFSHELLNAME) == 0)
- commandShell = sh;
- }
-}
-
-/**
- * Find a matching shell in 'shells' given its final component.
- *
- * Results:
- * A pointer to a freshly allocated Shell structure with the contents
- * from static description or NULL if no shell with the given name
- * is found.
- */
-static struct Shell *
-ShellMatch(const char *name)
-{
- struct Shell *sh;
-
- TAILQ_FOREACH(sh, &shells, link)
- if (strcmp(sh->name, name) == 0)
- return (sh);
-
- return (NULL);
-}
-
-/**
- * Parse a shell specification and set up commandShell appropriately.
- *
- * Results:
- * TRUE if the specification was correct. FALSE otherwise.
- *
- * Side Effects:
- * commandShell points to a Shell structure.
- * created from the shell spec).
- *
- * Notes:
- * A shell specification consists of a .SHELL target, with dependency
- * operator, followed by a series of blank-separated words. Double
- * quotes can be used to use blanks in words. A backslash escapes
- * anything (most notably a double-quote and a space) and
- * provides the functionality it does in C. Each word consists of
- * keyword and value separated by an equal sign. There should be no
- * unnecessary spaces in the word. The keywords are as follows:
- * name Name of shell.
- * path Location of shell. Overrides "name" if given
- * quiet Command to turn off echoing.
- * echo Command to turn echoing on
- * filter Result of turning off echoing that shouldn't be
- * printed.
- * echoFlag Flag to turn echoing on at the start
- * errFlag Flag to turn error checking on at the start
- * hasErrCtl True if shell has error checking control
- * check Command to turn on error checking if hasErrCtl
- * is TRUE or template of command to echo a command
- * for which error checking is off if hasErrCtl is
- * FALSE.
- * ignore Command to turn off error checking if hasErrCtl
- * is TRUE or template of command to execute a
- * command so as to ignore any errors it returns if
- * hasErrCtl is FALSE.
- * builtins A space separated list of builtins. If one
- * of these builtins is detected when make wants
- * to execute a command line, the command line is
- * handed to the shell. Otherwise make may try to
- * execute the command directly. If this list is empty
- * it is assumed, that the command must always be
- * handed over to the shell.
- * meta The shell meta characters. If this is not specified
- * or empty, commands are alway passed to the shell.
- * Otherwise they are not passed when they contain
- * neither a meta character nor a builtin command.
- * unsetenv Unsetenv("ENV") before executing anything.
- */
-Boolean
-Shell_Parse(const char line[])
-{
- Boolean fullSpec;
- struct Shell *sh;
- struct Shell *match;
-
- /* parse the specification */
- if ((sh = ShellParseSpec(line, &fullSpec)) == NULL)
- return (FALSE);
-
- if (sh->path == NULL) {
- /*
- * If no path was given, the user wants one of the pre-defined
- * shells, yes? So we find the one s/he wants with the help of
- * JobMatchShell and set things up the right way.
- */
- if (sh->name == NULL) {
- Parse_Error(PARSE_FATAL,
- "Neither path nor name specified");
- ShellFree(sh);
- return (FALSE);
- }
- if (fullSpec) {
- /*
- * XXX May want to merge sh into match. But this
- * require ShellParseSpec to return information
- * which attributes actuall have been specified.
- */
- Parse_Error(PARSE_FATAL, "No path specified");
- ShellFree(sh);
- return (FALSE);
- }
- if ((match = ShellMatch(sh->name)) == NULL) {
- Parse_Error(PARSE_FATAL, "%s: no matching shell",
- sh->name);
- ShellFree(sh);
- return (FALSE);
- }
- ShellFree(sh);
- commandShell = match;
-
- return (TRUE);
- }
-
- /*
- * The user provided a path. If s/he gave nothing else
- * (fullSpec is FALSE), try and find a matching shell in the
- * ones we know of. Else we just take the specification at its
- * word and copy it to a new location. In either case, we need
- * to record the path the user gave for the shell.
- */
- if (sh->name == NULL) {
- /* get the base name as the name */
- if ((sh->name = strrchr(sh->path, '/')) == NULL) {
- sh->name = estrdup(sh->path);
- } else {
- sh->name = estrdup(sh->name + 1);
- }
- }
-
- if (!fullSpec) {
- if ((match = ShellMatch(sh->name)) == NULL) {
- Parse_Error(PARSE_FATAL,
- "%s: no matching shell", sh->name);
- ShellFree(sh);
- return (FALSE);
- }
-
- /* set the patch on the matching shell */
- free(match->path);
- match->path = sh->path;
- sh->path = NULL;
-
- ShellFree(sh);
- commandShell = match;
- return (TRUE);
- }
-
- TAILQ_INSERT_HEAD(&shells, sh, link);
-
- /* set the new shell */
- commandShell = sh;
- return (TRUE);
-}
OpenPOWER on IntegriCloud