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7306727d1

Denys Vlasenko
Denys Vlasenko
2010-01-12
FAILED Duration: 30s

Subject

shell: split read builtin from ash

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

TODO_config_nommu +0 -2scripts/defconfig +0 -2shell/Kbuild +1 -1shell/ash.c +35 -199shell/ash_test/ash-read/read_REPLY.right +5 -0shell/ash_test/ash-read/read_REPLY.tests +5 -0shell/builtin_read.c +205 -0shell/builtin_read.h +42 -0shell/match.c +5 -5shell/match.h +5 -0shell/math.c +7 -8shell/random.h +8 -0shell/shell_common.c +26 -0shell/shell_common.h +35 -0
TODO_config_nommu+0 -2
@@ -859,8 +859,6 @@ CONFIG_FEATURE_SH_IS_HUSH=y
# CONFIG_ASH is not set
# CONFIG_ASH_BASH_COMPAT is not set
# CONFIG_ASH_JOB_CONTROL is not set
-# CONFIG_ASH_READ_NCHARS is not set
-# CONFIG_ASH_READ_TIMEOUT is not set
# CONFIG_ASH_ALIAS is not set
# CONFIG_ASH_GETOPTS is not set
# CONFIG_ASH_BUILTIN_ECHO is not set
scripts/defconfig+0 -2
@@ -856,8 +856,6 @@ CONFIG_FEATURE_SH_IS_ASH=y
CONFIG_ASH=y
CONFIG_ASH_BASH_COMPAT=y
CONFIG_ASH_JOB_CONTROL=y
-CONFIG_ASH_READ_NCHARS=y
-CONFIG_ASH_READ_TIMEOUT=y
CONFIG_ASH_ALIAS=y
CONFIG_ASH_GETOPTS=y
CONFIG_ASH_BUILTIN_ECHO=y
shell/Kbuild+1 -1
@@ -5,7 +5,7 @@
# Licensed under the GPL v2, see the file LICENSE in this tarball.
lib-y:=
-lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o
+lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o shell_common.o builtin_read.o
lib-$(CONFIG_HUSH) += hush.o match.o
lib-$(CONFIG_CTTYHACK) += cttyhack.o
shell/ash.c+35 -199
@@ -2,18 +2,18 @@
/*
* ash shell port for busybox
*
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Original BSD copyright notice is retained at the end of this file.
+ *
* Copyright (c) 1989, 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1997-2005 Herbert Xu <[email protected]>
* was re-ported from NetBSD and debianized.
*
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
- *
- * Original BSD copyright notice is retained at the end of this file.
*/
/*
@@ -34,8 +34,6 @@
#define PROFILE 0
-#define IFS_BROKEN
-
#define JOBS ENABLE_ASH_JOB_CONTROL
#if DEBUG
@@ -50,6 +48,9 @@
#include <paths.h>
#include <setjmp.h>
#include <fnmatch.h>
+
+#include "shell_common.h"
+#include "builtin_read.h"
#include "math.h"
#if ENABLE_ASH_RANDOM_SUPPORT
# include "random.h"
@@ -1737,13 +1738,6 @@ struct localvar {
# define VDYNAMIC 0
#endif
-#ifdef IFS_BROKEN
-static const char defifsvar[] ALIGN1 = "IFS= \t\n";
-#define defifs (defifsvar + 4)
-#else
-static const char defifs[] ALIGN1 = " \t\n";
-#endif
-
/* Need to be before varinit_data[] */
#if ENABLE_LOCALE_SUPPORT
@@ -1774,7 +1768,7 @@ static const struct {
const char *text;
void (*func)(const char *) FAST_FUNC;
} varinit_data[] = {
-#ifdef IFS_BROKEN
+#if IFS_BROKEN
{ VSTRFIXED|VTEXTFIXED , defifsvar , NULL },
#else
{ VSTRFIXED|VTEXTFIXED|VUNSET, "IFS\0" , NULL },
@@ -12499,211 +12493,53 @@ typedef enum __rlimit_resource rlim_t;
static int FAST_FUNC
readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
- static const char *const arg_REPLY[] = { "REPLY", NULL };
-
- char **ap;
- int backslash;
- char c;
- int rflag;
- char *prompt;
- const char *ifs;
- char *p;
- int startword;
- int status;
+ char *opt_n = NULL;
+ char *opt_p = NULL;
+ char *opt_t = NULL;
+ char *opt_u = NULL;
+ int read_flags = 0;
+ const char *r;
int i;
- int fd = 0;
-#if ENABLE_ASH_READ_NCHARS
- int nchars = 0; /* if != 0, -n is in effect */
- int silent = 0;
- struct termios tty, old_tty;
-#endif
-#if ENABLE_ASH_READ_TIMEOUT
- unsigned end_ms = 0;
- unsigned timeout = 0;
-#endif
-
- rflag = 0;
- prompt = NULL;
- while ((i = nextopt("p:u:r"
- IF_ASH_READ_TIMEOUT("t:")
- IF_ASH_READ_NCHARS("n:s")
- )) != '\0') {
+
+ while ((i = nextopt("p:u:rt:n:s")) != '\0') {
switch (i) {
case 'p':
- prompt = optionarg;
+ opt_p = optionarg;
break;
-#if ENABLE_ASH_READ_NCHARS
case 'n':
- nchars = bb_strtou(optionarg, NULL, 10);
- if (nchars < 0 || errno)
- ash_msg_and_raise_error("invalid count");
- /* nchars == 0: off (bash 3.2 does this too) */
+ opt_n = optionarg;
break;
case 's':
- silent = 1;
+ read_flags |= BUILTIN_READ_SILENT;
break;
-#endif
-#if ENABLE_ASH_READ_TIMEOUT
case 't':
- timeout = bb_strtou(optionarg, NULL, 10);
- if (errno || timeout > UINT_MAX / 2048)
- ash_msg_and_raise_error("invalid timeout");
- timeout *= 1000;
-#if 0 /* even bash have no -t N.NNN support */
- ts.tv_sec = bb_strtou(optionarg, &p, 10);
- ts.tv_usec = 0;
- /* EINVAL means number is ok, but not terminated by NUL */
- if (*p == '.' && errno == EINVAL) {
- char *p2;
- if (*++p) {
- int scale;
- ts.tv_usec = bb_strtou(p, &p2, 10);
- if (errno)
- ash_msg_and_raise_error("invalid timeout");
- scale = p2 - p;
- /* normalize to usec */
- if (scale > 6)
- ash_msg_and_raise_error("invalid timeout");
- while (scale++ < 6)
- ts.tv_usec *= 10;
- }
- } else if (ts.tv_sec < 0 || errno) {
- ash_msg_and_raise_error("invalid timeout");
- }
- if (!(ts.tv_sec | ts.tv_usec)) { /* both are 0? */
- ash_msg_and_raise_error("invalid timeout");
- }
-#endif /* if 0 */
+ opt_t = optionarg;
break;
-#endif
case 'r':
- rflag = 1;
+ read_flags |= BUILTIN_READ_RAW;
break;
case 'u':
- fd = bb_strtou(optionarg, NULL, 10);
- if (fd < 0 || errno)
- ash_msg_and_raise_error("invalid file descriptor");
+ opt_u = optionarg;
break;
default:
break;
}
}
- if (prompt && isatty(fd)) {
- out2str(prompt);
- }
- ap = argptr;
- if (*ap == NULL)
- ap = (char**)arg_REPLY;
- ifs = bltinlookup("IFS");
- if (ifs == NULL)
- ifs = defifs;
-#if ENABLE_ASH_READ_NCHARS
- tcgetattr(fd, &tty);
- old_tty = tty;
- if (nchars || silent) {
- if (nchars) {
- tty.c_lflag &= ~ICANON;
- tty.c_cc[VMIN] = nchars < 256 ? nchars : 255;
- }
- if (silent) {
- tty.c_lflag &= ~(ECHO | ECHOK | ECHONL);
- }
- /* if tcgetattr failed, tcsetattr will fail too.
- * Ignoring, it's harmless. */
- tcsetattr(fd, TCSANOW, &tty);
- }
-#endif
- status = 0;
- startword = 1;
- backslash = 0;
-#if ENABLE_ASH_READ_TIMEOUT
- if (timeout) /* NB: ensuring end_ms is nonzero */
- end_ms = ((unsigned)monotonic_ms() + timeout) | 1;
-#endif
- STARTSTACKSTR(p);
- do {
- const char *is_ifs;
-
-#if ENABLE_ASH_READ_TIMEOUT
- if (end_ms) {
- struct pollfd pfd[1];
- pfd[0].fd = fd;
- pfd[0].events = POLLIN;
- timeout = end_ms - (unsigned)monotonic_ms();
- if ((int)timeout <= 0 /* already late? */
- || safe_poll(pfd, 1, timeout) != 1 /* no? wait... */
- ) { /* timed out! */
-#if ENABLE_ASH_READ_NCHARS
- tcsetattr(fd, TCSANOW, &old_tty);
-#endif
- return 1;
- }
- }
-#endif
- if (nonblock_safe_read(fd, &c, 1) != 1) {
- status = 1;
- break;
- }
- if (c == '\0')
- continue;
- if (backslash) {
- backslash = 0;
- if (c != '\n')
- goto put;
- continue;
- }
- if (!rflag && c == '\\') {
- backslash = 1;
- continue;
- }
- if (c == '\n')
- break;
- /* $IFS splitting */
-/* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05 */
- is_ifs = strchr(ifs, c);
- if (startword && is_ifs) {
- if (isspace(c))
- continue;
- /* it is a non-space ifs char */
- startword--;
- if (startword == 1) /* first one? */
- continue; /* yes, it is not next word yet */
- }
- startword = 0;
- if (ap[1] != NULL && is_ifs) {
- const char *beg;
- STACKSTRNUL(p);
- beg = stackblock();
- setvar(*ap, beg, 0);
- ap++;
- /* can we skip one non-space ifs char? (2: yes) */
- startword = isspace(c) ? 2 : 1;
- STARTSTACKSTR(p);
- continue;
- }
- put:
- STPUTC(c, p);
- }
-/* end of do {} while: */
-#if ENABLE_ASH_READ_NCHARS
- while (--nchars);
-#else
- while (1);
-#endif
+ r = builtin_read(setvar,
+ argptr,
+ bltinlookup("IFS"), /* can be NULL */
+ read_flags,
+ opt_n,
+ opt_p,
+ opt_t,
+ opt_u
+ );
-#if ENABLE_ASH_READ_NCHARS
- tcsetattr(fd, TCSANOW, &old_tty);
-#endif
+ if ((uintptr_t)r > 1)
+ ash_msg_and_raise_error(r);
- STACKSTRNUL(p);
- /* Remove trailing space ifs chars */
- while ((char *)stackblock() <= --p && isspace(*p) && strchr(ifs, *p) != NULL)
- *p = '\0';
- setvar(*ap, stackblock(), 0);
- while (*++ap != NULL)
- setvar(*ap, nullstr, 0);
- return status;
+ return (uintptr_t)r;
}
static int FAST_FUNC
shell/ash_test/ash-read/read_REPLY.right+5 -0
@@ -0,0 +1,5 @@
+test 1: | abc1 def |
+test 2: | \abc2 d\ef |
+test 3: |abc3 def|
+test 4: |\abc4 d\ef|
+Done
shell/ash_test/ash-read/read_REPLY.tests+5 -0
@@ -0,0 +1,5 @@
+echo ' \abc1 d\ef ' | ( read ; echo "test 1: |$REPLY|" )
+echo ' \abc2 d\ef ' | ( read -r ; echo "test 2: |$REPLY|" )
+echo ' \abc3 d\ef ' | ( read REPLY; echo "test 3: |$REPLY|" )
+echo ' \abc4 d\ef ' | ( read -r REPLY; echo "test 4: |$REPLY|" )
+echo Done
shell/builtin_read.c+205 -0
@@ -0,0 +1,205 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Adapted from ash applet code
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Copyright (c) 1989, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 1997-2005 Herbert Xu <[email protected]>
+ * was re-ported from NetBSD and debianized.
+ *
+ * Copyright (c) 2010 Denys Vlasenko
+ * Split from ash.c
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+#include "libbb.h"
+#include "shell_common.h"
+#include "builtin_read.h"
+
+const char* FAST_FUNC
+builtin_read(void (*setvar)(const char *name, const char *val, int flags),
+ char **argv,
+ const char *ifs,
+ int read_flags,
+ const char *opt_n,
+ const char *opt_p,
+ const char *opt_t,
+ const char *opt_u
+)
+{
+ static const char *const arg_REPLY[] = { "REPLY", NULL };
+
+ unsigned end_ms; /* -t TIMEOUT */
+ int fd; /* -u FD */
+ int nchars; /* -n NUM */
+ char *buffer;
+ struct termios tty, old_tty;
+ const char *retval;
+ int bufpos; /* need to be able to hold -1 */
+ int startword;
+ smallint backslash;
+
+ nchars = 0; /* if != 0, -n is in effect */
+ if (opt_n) {
+ nchars = bb_strtou(opt_n, NULL, 10);
+ if (nchars < 0 || errno)
+ return "invalid count";
+ /* note: "-n 0": off (bash 3.2 does this too) */
+ }
+ end_ms = 0;
+ if (opt_t) {
+ end_ms = bb_strtou(opt_t, NULL, 10);
+ if (errno || end_ms > UINT_MAX / 2048)
+ return "invalid timeout";
+ end_ms *= 1000;
+#if 0 /* even bash has no -t N.NNN support */
+ ts.tv_sec = bb_strtou(opt_t, &p, 10);
+ ts.tv_usec = 0;
+ /* EINVAL means number is ok, but not terminated by NUL */
+ if (*p == '.' && errno == EINVAL) {
+ char *p2;
+ if (*++p) {
+ int scale;
+ ts.tv_usec = bb_strtou(p, &p2, 10);
+ if (errno)
+ return "invalid timeout";
+ scale = p2 - p;
+ /* normalize to usec */
+ if (scale > 6)
+ return "invalid timeout";
+ while (scale++ < 6)
+ ts.tv_usec *= 10;
+ }
+ } else if (ts.tv_sec < 0 || errno) {
+ return "invalid timeout";
+ }
+ if (!(ts.tv_sec | ts.tv_usec)) { /* both are 0? */
+ return "invalid timeout";
+ }
+#endif /* if 0 */
+ }
+ fd = STDIN_FILENO;
+ if (opt_u) {
+ fd = bb_strtou(opt_u, NULL, 10);
+ if (fd < 0 || errno)
+ return "invalid file descriptor";
+ }
+
+ if (opt_p && isatty(fd)) {
+ fputs(opt_p, stderr);
+ fflush_all();
+ }
+
+ if (argv[0] == NULL)
+ argv = (char**)arg_REPLY;
+ if (ifs == NULL)
+ ifs = defifs;
+
+ if (nchars || (read_flags & BUILTIN_READ_SILENT)) {
+ tcgetattr(fd, &tty);
+ old_tty = tty;
+ if (nchars) {
+ tty.c_lflag &= ~ICANON;
+ tty.c_cc[VMIN] = nchars < 256 ? nchars : 255;
+ }
+ if (read_flags & BUILTIN_READ_SILENT) {
+ tty.c_lflag &= ~(ECHO | ECHOK | ECHONL);
+ }
+ /* This forces execution of "restoring" tcgetattr later */
+ read_flags |= BUILTIN_READ_SILENT;
+ /* if tcgetattr failed, tcsetattr will fail too.
+ * Ignoring, it's harmless. */
+ tcsetattr(fd, TCSANOW, &tty);
+ }
+
+ retval = (const char *)(uintptr_t)0;
+ startword = 1;
+ backslash = 0;
+ if (end_ms) /* NB: end_ms stays nonzero: */
+ end_ms = ((unsigned)monotonic_ms() + end_ms) | 1;
+ buffer = NULL;
+ bufpos = 0;
+ do {
+ char c;
+ const char *is_ifs;
+
+ if (end_ms) {
+ int timeout;
+ struct pollfd pfd[1];
+
+ pfd[0].fd = fd;
+ pfd[0].events = POLLIN;
+ timeout = end_ms - (unsigned)monotonic_ms();
+ if (timeout <= 0 /* already late? */
+ || safe_poll(pfd, 1, timeout) != 1 /* no? wait... */
+ ) { /* timed out! */
+ retval = (const char *)(uintptr_t)1;
+ goto ret;
+ }
+ }
+
+ if ((bufpos & 0xff) == 0)
+ buffer = xrealloc(buffer, bufpos + 0x100);
+ if (nonblock_safe_read(fd, &buffer[bufpos], 1) != 1) {
+ retval = (const char *)(uintptr_t)1;
+ break;
+ }
+ c = buffer[bufpos];
+ if (c == '\0')
+ continue;
+ if (backslash) {
+ backslash = 0;
+ if (c != '\n')
+ goto put;
+ continue;
+ }
+ if (!(read_flags & BUILTIN_READ_RAW) && c == '\\') {
+ backslash = 1;
+ continue;
+ }
+ if (c == '\n')
+ break;
+ /* $IFS splitting */
+/* http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05 */
+ is_ifs = strchr(ifs, c);
+ if (startword && is_ifs) {
+ if (isspace(c))
+ continue;
+ /* it is a non-space ifs char */
+ startword--;
+ if (startword == 1) /* first one? */
+ continue; /* yes, it is not next word yet */
+ }
+ startword = 0;
+ if (argv[1] != NULL && is_ifs) {
+ buffer[bufpos] = '\0';
+ bufpos = 0;
+ setvar(*argv, buffer, 0);
+ argv++;
+ /* can we skip one non-space ifs char? (2: yes) */
+ startword = isspace(c) ? 2 : 1;
+ continue;
+ }
+ put:
+ bufpos++;
+ } while (--nchars);
+
+ /* Remove trailing space ifs chars */
+ while (--bufpos >= 0 && isspace(buffer[bufpos]) && strchr(ifs, buffer[bufpos]) != NULL)
+ continue;
+ buffer[bufpos + 1] = '\0';
+
+ setvar(*argv, buffer, 0);
+
+ while (*++argv != NULL)
+ setvar(*argv, "", 0);
+ ret:
+ free(buffer);
+ if (read_flags & BUILTIN_READ_SILENT)
+ tcsetattr(fd, TCSANOW, &old_tty);
+ return retval;
+}
shell/builtin_read.h+42 -0
@@ -0,0 +1,42 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Adapted from ash applet code
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Copyright (c) 1989, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 1997-2005 Herbert Xu <[email protected]>
+ * was re-ported from NetBSD and debianized.
+ *
+ * Copyright (c) 2010 Denys Vlasenko
+ * Split from ash.c
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+#ifndef SHELL_BUILTIN_READ_H
+#define SHELL_BUILTIN_READ_H 1
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+
+enum {
+ BUILTIN_READ_SILENT = 1 << 0,
+ BUILTIN_READ_RAW = 1 << 1,
+};
+
+const char* FAST_FUNC
+builtin_read(void (*setvar)(const char *name, const char *val, int flags),
+ char **argv,
+ const char *ifs,
+ int read_flags,
+ const char *opt_n,
+ const char *opt_p,
+ const char *opt_t,
+ const char *opt_u
+);
+
+POP_SAVED_FUNCTION_VISIBILITY
+
+#endif
shell/match.c+5 -5
@@ -1,16 +1,16 @@
/*
* ##/%% variable matching code ripped out of ash shell for code sharing
*
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ *
* Copyright (c) 1989, 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1997-2005 Herbert Xu <[email protected]>
* was re-ported from NetBSD and debianized.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#ifdef STANDALONE
# include <stdbool.h>
shell/match.h+5 -0
@@ -1,5 +1,8 @@
/* match.h - interface to shell ##/%% matching code */
+#ifndef SHELL_MATCH_H
+#define SHELL_MATCH_H 1
+
PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
typedef char *(*scan_t)(char *string, char *match, bool match_at_left);
@@ -24,3 +27,5 @@ static inline scan_t pick_scan(char op1, char op2, bool *match_at_left)
}
POP_SAVED_FUNCTION_VISIBILITY
+
+#endif
shell/math.c+7 -8
@@ -1,20 +1,17 @@
/*
* arithmetic code ripped out of ash shell for code sharing
*
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Original BSD copyright notice is retained at the end of this file.
+ *
* Copyright (c) 1989, 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 1997-2005 Herbert Xu <[email protected]>
* was re-ported from NetBSD and debianized.
*
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
- *
- * Original BSD copyright notice is retained at the end of this file.
- */
-/*
* rewrite arith.y to micro stack based cryptic algorithm by
* Copyright (c) 2001 Aaron Lehmann <[email protected]>
*
@@ -25,6 +22,8 @@
* used in busybox and size optimizations,
* rewrote arith (see notes to this), added locale support,
* rewrote dynamic variables.
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#include "libbb.h"
#include "math.h"
shell/random.h+8 -0
@@ -6,6 +6,10 @@
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
+#ifndef SHELL_RANDOM_H
+#define SHELL_RANDOM_H 1
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
typedef struct random_t {
/* Random number generators */
@@ -23,3 +27,7 @@ typedef struct random_t {
((rnd)->galois_LFSR = 0)
uint32_t next_random(random_t *rnd) FAST_FUNC;
+
+POP_SAVED_FUNCTION_VISIBILITY
+
+#endif
shell/shell_common.c+26 -0
@@ -0,0 +1,26 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Adapted from ash applet code
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Copyright (c) 1989, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 1997-2005 Herbert Xu <[email protected]>
+ * was re-ported from NetBSD and debianized.
+ *
+ * Copyright (c) 2010 Denys Vlasenko
+ * Split from ash.c
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+#include "libbb.h"
+#include "shell_common.h"
+
+#if IFS_BROKEN
+const char defifsvar[] ALIGN1 = "IFS= \t\n";
+#else
+const char defifs[] ALIGN1 = " \t\n";
+#endif
shell/shell_common.h+35 -0
@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Adapted from ash applet code
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Copyright (c) 1989, 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 1997-2005 Herbert Xu <[email protected]>
+ * was re-ported from NetBSD and debianized.
+ *
+ * Copyright (c) 2010 Denys Vlasenko
+ * Split from ash.c
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+#ifndef SHELL_COMMON_H
+#define SHELL_COMMON_H 1
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+
+#define IFS_BROKEN 1
+
+#if IFS_BROKEN
+extern const char defifsvar[]; /* "IFS= \t\n" */
+#define defifs (defifsvar + 4)
+#else
+extern const char defifs[]; /* " \t\n" */
+#endif
+
+POP_SAVED_FUNCTION_VISIBILITY
+
+#endif