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-rw-r--r--coreutils/test.c123
1 files changed, 76 insertions, 47 deletions
diff --git a/coreutils/test.c b/coreutils/test.c
index 2b624e3..4d92038 100644
--- a/coreutils/test.c
+++ b/coreutils/test.c
@@ -4,31 +4,19 @@
*
* Copyright (c) by a whole pile of folks:
*
- * test(1); version 7-like -- author Erik Baalbergen
- * modified by Eric Gisin to be used as built-in.
- * modified by Arnold Robbins to add SVR3 compatibility
- * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
- * modified by J.T. Conklin for NetBSD.
- * modified by Herbert Xu to be used as built-in in ash.
- * modified by Erik Andersen <andersen@codepoet.org> to be used
- * in busybox.
+ * test(1); version 7-like -- author Erik Baalbergen
+ * modified by Eric Gisin to be used as built-in.
+ * modified by Arnold Robbins to add SVR3 compatibility
+ * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket).
+ * modified by J.T. Conklin for NetBSD.
+ * modified by Herbert Xu to be used as built-in in ash.
+ * modified by Erik Andersen <andersen@codepoet.org> to be used
+ * in busybox.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
* Original copyright notice states:
- * "This program is in the Public Domain."
+ * "This program is in the Public Domain."
*/
#include <sys/types.h>
@@ -37,13 +25,14 @@
#include <errno.h>
#include <stdlib.h>
#include <string.h>
+#include <setjmp.h>
#include "busybox.h"
/* test(1) accepts the following grammar:
oexpr ::= aexpr | aexpr "-o" oexpr ;
aexpr ::= nexpr | nexpr "-a" aexpr ;
nexpr ::= primary | "!" primary
- primary ::= unary-operator operand
+ primary ::= unary-operator operand
| operand binary-operator operand
| operand
| "(" oexpr ")"
@@ -128,7 +117,7 @@ static const struct t_op {
"-t", FILTT, UNOP}, {
"-z", STREZ, UNOP}, {
"-n", STRNZ, UNOP}, {
- "-h", FILSYM, UNOP}, /* for backwards compat */
+ "-h", FILSYM, UNOP}, /* for backwards compat */
{
"-O", FILUID, UNOP}, {
"-G", FILGID, UNOP}, {
@@ -182,36 +171,56 @@ static int test_eaccess(char *path, int mode);
static int is_a_group_member(gid_t gid);
static void initialize_group_array(void);
-int test_main(int argc, char **argv)
+static jmp_buf leaving;
+
+int bb_test(int argc, char **argv)
{
int res;
- if (strcmp(bb_applet_name, "[") == 0) {
- if (strcmp(argv[--argc], "]"))
- bb_error_msg_and_die("missing ]");
+ if (strcmp(argv[0], "[") == 0) {
+ if (strcmp(argv[--argc], "]")) {
+ bb_error_msg("missing ]");
+ return 2;
+ }
argv[argc] = NULL;
- }
- if (strcmp(bb_applet_name, "[[") == 0) {
- if (strcmp(argv[--argc], "]]"))
- bb_error_msg_and_die("missing ]]");
+ } else if (strcmp(argv[0], "[[") == 0) {
+ if (strcmp(argv[--argc], "]]")) {
+ bb_error_msg("missing ]]");
+ return 2;
+ }
argv[argc] = NULL;
}
+
+ res = setjmp(leaving);
+ if (res)
+ return res;
+
+ /* resetting ngroups is probably unnecessary. it will
+ * force a new call to getgroups(), which prevents using
+ * group data fetched during a previous call. but the
+ * only way the group data could be stale is if there's
+ * been an intervening call to setgroups(), and this
+ * isn't likely in the case of a shell. paranoia
+ * prevails...
+ */
+ ngroups = 0;
+
/* Implement special cases from POSIX.2, section 4.62.4 */
switch (argc) {
case 1:
- exit(1);
+ return 1;
case 2:
- exit(*argv[1] == '\0');
+ return *argv[1] == '\0';
case 3:
if (argv[1][0] == '!' && argv[1][1] == '\0') {
- exit(!(*argv[2] == '\0'));
+ return *argv[2] != '\0';
}
break;
case 4:
if (argv[1][0] != '!' || argv[1][1] != '\0') {
if (t_lex(argv[2]), t_wp_op && t_wp_op->op_type == BINOP) {
t_wp = &argv[1];
- exit(binop() == 0);
+ return binop() == 0;
}
}
break;
@@ -219,7 +228,7 @@ int test_main(int argc, char **argv)
if (argv[1][0] == '!' && argv[1][1] == '\0') {
if (t_lex(argv[3]), t_wp_op && t_wp_op->op_type == BINOP) {
t_wp = &argv[2];
- exit(!(binop() == 0));
+ return binop() != 0;
}
}
break;
@@ -228,10 +237,21 @@ int test_main(int argc, char **argv)
t_wp = &argv[1];
res = !oexpr(t_lex(*t_wp));
- if (*t_wp != NULL && *++t_wp != NULL)
- bb_error_msg_and_die("%s: unknown operand", *t_wp);
+ if (*t_wp != NULL && *++t_wp != NULL) {
+ bb_error_msg("%s: unknown operand", *t_wp);
+ return 2;
+ }
+ return res;
+}
- return (res);
+static void syntax(const char *op, const char *msg)
+{
+ if (op && *op) {
+ bb_error_msg("%s: %s", op, msg);
+ } else {
+ bb_error_msg("%s", msg);
+ }
+ longjmp(leaving, 2);
}
static arith_t oexpr(enum token n)
@@ -269,18 +289,18 @@ static arith_t primary(enum token n)
arith_t res;
if (n == EOI) {
- bb_error_msg_and_die("argument expected");
+ syntax(NULL, "argument expected");
}
if (n == LPAREN) {
res = oexpr(t_lex(*++t_wp));
if (t_lex(*++t_wp) != RPAREN)
- bb_error_msg_and_die("closing paren expected");
+ syntax(NULL, "closing paren expected");
return res;
}
if (t_wp_op && t_wp_op->op_type == UNOP) {
/* unary expression */
if (*++t_wp == NULL)
- bb_error_msg_and_die(bb_msg_requires_arg, t_wp_op->op_text);
+ syntax(t_wp_op->op_text, "argument expected");
switch (n) {
case STREZ:
return strlen(*t_wp) == 0;
@@ -310,7 +330,7 @@ static int binop(void)
op = t_wp_op;
if ((opnd2 = *++t_wp) == (char *) 0)
- bb_error_msg_and_die(bb_msg_requires_arg, op->op_text);
+ syntax(op->op_text, "argument expected");
switch (op->op_num) {
case STREQ:
@@ -460,11 +480,11 @@ static arith_t getn(const char *s)
#endif
if (errno != 0)
- bb_error_msg_and_die("%s: out of range", s);
+ syntax(s, "out of range");
/* p = bb_skip_whitespace(p); avoid const warning */
if (*(bb_skip_whitespace(p)))
- bb_error_msg_and_die("%s: bad number", s);
+ syntax(s, "bad number");
return r;
}
@@ -516,7 +536,7 @@ static int test_eaccess(char *path, int mode)
return (0);
}
- if (st.st_uid == euid) /* owner */
+ if (st.st_uid == euid) /* owner */
mode <<= 6;
else if (is_a_group_member(st.st_gid))
mode <<= 3;
@@ -553,3 +573,12 @@ static int is_a_group_member(gid_t gid)
return (0);
}
+
+
+/* applet entry point */
+
+int test_main(int argc, char **argv)
+{
+ exit(bb_test(argc, argv));
+}
+
generated by cgit v1.1 at 2024-12-27 08:29:51 +0000