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Make it possible to select "sh" and "bash" aliases without selecting ash or hush

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The same can be done for msh, but we are probably better off just deleting it
in a next versio or two.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-12-23 16:49:07 +01:00
parent 04c1a2a2c4
commit 0b8835861b
9 changed files with 120 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
coreutils/Kbuild.src
View File

@ -16,6 +16,10 @@ lib-$(CONFIG_CRONTAB) += cat.o # crontab -l
lib-$(CONFIG_ADDUSER) += chown.o # used by adduser
lib-$(CONFIG_ADDGROUP) += chown.o # used by adduser
lib-$(CONFIG_ASH) += echo.o # used by ash
lib-$(CONFIG_SH_IS_ASH) += echo.o # used by ash
lib-$(CONFIG_BASH_IS_ASH) += echo.o # used by ash
lib-$(CONFIG_HUSH) += echo.o # used by hush
lib-$(CONFIG_SH_IS_HUSH) += echo.o # used by hush
lib-$(CONFIG_BASH_IS_HUSH) += echo.o # used by hush
lib-$(CONFIG_FTPD) += ls.o # used by ftpd
lib-$(CONFIG_ASH_BUILTIN_PRINTF) += printf.o

2
coreutils/test.c
View File

@ -55,6 +55,8 @@
//kbuild:lib-$(CONFIG_TEST2) += test.o test_ptr_hack.o
//kbuild:lib-$(CONFIG_ASH_BUILTIN_TEST) += test.o test_ptr_hack.o
//kbuild:lib-$(CONFIG_HUSH) += test.o test_ptr_hack.o
//kbuild:lib-$(CONFIG_SH_IS_HUSH) += test.o test_ptr_hack.o
//kbuild:lib-$(CONFIG_BASH_IS_HUSH) += test.o test_ptr_hack.o
/* "test --help" is special-cased to ignore --help */
//usage:#define test_trivial_usage NOUSAGE_STR

11
make_single_applets.sh
View File

@ -26,6 +26,7 @@ allno="$cfg"
for app in $apps; do
allno="`echo "$allno" | sed "s/^CONFIG_${app}=y\$/# CONFIG_${app} is not set/"`"
done
#echo "$allno" >.config_allno
# Turn on each applet individually and build single-applet executable
fail=0
@ -37,6 +38,16 @@ for app in $apps; do
mv .config .config.SV
echo "CONFIG_${app}=y" >.config
echo "$allno" | sed "/^# CONFIG_${app} is not set\$/d" >>.config
if test x"${app}" != x"SH_IS_ASH"; then
# $allno has all choices for "sh" aliasing at off.
# "sh" aliasing defaults to "ash", not none.
# without this fix, "make oldconfig" sets it wrong,
# resulting in NUM_APPLETS = 2
sed '/CONFIG_SH_IS_NONE/d' -i .config
echo "CONFIG_SH_IS_NONE=y" >>.config
fi
if ! yes '' | make oldconfig >busybox_make_${app}.log 2>&1; then
: $((fail++))
echo "Config error for ${app}"

2
procps/Kbuild.src
View File

@ -9,3 +9,5 @@ lib-y:=
INSERT
lib-$(CONFIG_ASH) += kill.o # used for built-in kill by ash
lib-$(CONFIG_SH_IS_ASH) += kill.o # used for built-in kill by ash
lib-$(CONFIG_BASH_IS_ASH) += kill.o # used for built-in kill by ash

45
shell/Config.src
View File

@ -5,34 +5,30 @@
menu "Shells"
INSERT
choice
prompt "Choose which shell is aliased to 'sh' name"
default FEATURE_SH_IS_ASH
default SH_IS_ASH
help
Choose which shell you want to be executed by 'sh' alias.
The ash shell is the most bash compatible and full featured one.
# note: cannot use "select ASH" here, it breaks "make allnoconfig"
config FEATURE_SH_IS_ASH
depends on ASH
bool "ash"
config SH_IS_ASH
depends on !NOMMU
bool "ash"
config FEATURE_SH_IS_HUSH
depends on HUSH
config SH_IS_HUSH
bool "hush"
config FEATURE_SH_IS_NONE
config SH_IS_NONE
bool "none"
endchoice
choice
prompt "Choose which shell is aliased to 'bash' name"
default FEATURE_BASH_IS_NONE
default BASH_IS_NONE
help
Choose which shell you want to be executed by 'bash' alias.
The ash shell is the most bash compatible and full featured one.
@ -47,32 +43,33 @@ choice
can't be used for running them because it won't recongnize
"bash" as a supported applet name.
config FEATURE_BASH_IS_ASH
depends on ASH
bool "ash"
config BASH_IS_ASH
depends on !NOMMU
bool "ash"
config FEATURE_BASH_IS_HUSH
depends on HUSH
config BASH_IS_HUSH
bool "hush"
config FEATURE_BASH_IS_NONE
config BASH_IS_NONE
bool "none"
endchoice
config SH_MATH_SUPPORT
INSERT
config FEATURE_SH_MATH
bool "POSIX math support"
default y
depends on ASH || HUSH
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
Enable math support in the shell via $((...)) syntax.
config SH_MATH_SUPPORT_64
config FEATURE_SH_MATH_64
bool "Extend POSIX math support to 64 bit"
default y
depends on SH_MATH_SUPPORT
depends on FEATURE_SH_MATH
help
Enable 64-bit math support in the shell. This will make the shell
slightly larger, but will allow computation with very large numbers.
@ -81,14 +78,14 @@ config SH_MATH_SUPPORT_64
config FEATURE_SH_EXTRA_QUIET
bool "Hide message on interactive shell startup"
default y
depends on HUSH || ASH
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
Remove the busybox introduction when starting a shell.
config FEATURE_SH_STANDALONE
bool "Standalone shell"
default n
depends on (HUSH || ASH)
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
This option causes busybox shells to use busybox applets
in preference to executables in the PATH whenever possible. For
@ -121,7 +118,7 @@ config FEATURE_SH_STANDALONE
config FEATURE_SH_NOFORK
bool "Run 'nofork' applets directly"
default n
depends on (HUSH || ASH)
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
This option causes busybox shells to not execute typical
fork/exec/wait sequence, but call <applet>_main directly,
@ -139,7 +136,7 @@ config FEATURE_SH_NOFORK
config FEATURE_SH_HISTFILESIZE
bool "Use $HISTFILESIZE"
default y
depends on HUSH || ASH
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
This option makes busybox shells to use $HISTFILESIZE variable
to set shell history size. Note that its max value is capped

2
shell/Kbuild.src
View File

@ -8,4 +8,4 @@ lib-y:=
INSERT
lib-$(CONFIG_SH_MATH_SUPPORT) += math.o
lib-$(CONFIG_FEATURE_SH_MATH) += math.o

95
shell/ash.c
View File

@ -29,14 +29,14 @@
//config:config ASH_OPTIMIZE_FOR_SIZE
//config: bool "Optimize for size instead of speed"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Compile ash for reduced size at the price of speed.
//config:
//config:config ASH_INTERNAL_GLOB
//config: bool "Use internal glob() implementation"
//config: default y # Y is bigger, but because of uclibc glob() bug, let Y be default for now
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Do not use glob() function from libc, use internal implementation.
//config: Use this if you are getting "glob.h: No such file or directory"
@ -45,7 +45,7 @@
//config:config ASH_RANDOM_SUPPORT
//config: bool "Pseudorandom generator and $RANDOM variable"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable pseudorandom generator and dynamic variable "$RANDOM".
//config: Each read of "$RANDOM" will generate a new pseudorandom value.
@ -56,7 +56,7 @@
//config:config ASH_EXPAND_PRMT
//config: bool "Expand prompt string"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: "PS#" may contain volatile content, such as backquote commands.
//config: This option recreates the prompt string from the environment
@ -65,70 +65,70 @@
//config:config ASH_BASH_COMPAT
//config: bool "bash-compatible extensions"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable bash-compatible extensions.
//config:
//config:config ASH_IDLE_TIMEOUT
//config: bool "Idle timeout variable"
//config: default n
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enables bash-like auto-logout after $TMOUT seconds of idle time.
//config:
//config:config ASH_JOB_CONTROL
//config: bool "Job control"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable job control in the ash shell.
//config:
//config:config ASH_ALIAS
//config: bool "Alias support"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable alias support in the ash shell.
//config:
//config:config ASH_GETOPTS
//config: bool "Builtin getopt to parse positional parameters"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable support for getopts builtin in ash.
//config:
//config:config ASH_BUILTIN_ECHO
//config: bool "Builtin version of 'echo'"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable support for echo builtin in ash.
//config:
//config:config ASH_BUILTIN_PRINTF
//config: bool "Builtin version of 'printf'"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable support for printf builtin in ash.
//config:
//config:config ASH_BUILTIN_TEST
//config: bool "Builtin version of 'test'"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable support for test builtin in ash.
//config:
//config:config ASH_HELP
//config: bool "help builtin"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable help builtin in ash.
//config:
//config:config ASH_CMDCMD
//config: bool "'command' command to override shell builtins"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable support for the ash 'command' builtin, which allows
//config: you to run the specified command with the specified arguments,
@ -137,15 +137,17 @@
//config:config ASH_MAIL
//config: bool "Check for new mail on interactive shells"
//config: default y
//config: depends on ASH
//config: depends on ASH || SH_IS_ASH || BASH_IS_ASH
//config: help
//config: Enable "check for new mail" function in the ash shell.
//applet:IF_ASH(APPLET(ash, BB_DIR_BIN, BB_SUID_DROP))
//applet:IF_FEATURE_SH_IS_ASH(APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, sh))
//applet:IF_FEATURE_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, bash))
//applet:IF_SH_IS_ASH(APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
//applet:IF_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
//kbuild:lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o shell_common.o
//kbuild:lib-$(CONFIG_SH_IS_ASH) += ash.o ash_ptr_hack.o shell_common.o
//kbuild:lib-$(CONFIG_BASH_IS_ASH) += ash.o ash_ptr_hack.o shell_common.o
//kbuild:lib-$(CONFIG_ASH_RANDOM_SUPPORT) += random.o
/*
@ -200,7 +202,7 @@
#include "unicode.h"
#include "shell_common.h"
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
# include "math.h"
#endif
#if ENABLE_ASH_RANDOM_SUPPORT
@ -2144,6 +2146,7 @@ lookupvar(const char *name)
return NULL;
}
#if ENABLE_UNICODE_SUPPORT
static void
reinit_unicode_for_ash(void)
{
@ -2160,6 +2163,9 @@ reinit_unicode_for_ash(void)
reinit_unicode(s);
}
}
#else
# define reinit_unicode_for_ash() ((void)0)
#endif
/*
* Search the environment of a builtin command.
@ -2741,7 +2747,7 @@ pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#define USE_SIT_FUNCTION ENABLE_ASH_OPTIMIZE_FOR_SIZE
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
# define SIT_ITEM(a,b,c,d) (a | (b << 4) | (c << 8) | (d << 12))
#else
# define SIT_ITEM(a,b,c,d) (a | (b << 4) | (c << 8))
@ -3129,7 +3135,7 @@ static const uint8_t syntax_index_table[] ALIGN1 = {
({ \
if ((c) < 0 || (c) > (PEOF + ENABLE_ASH_ALIAS)) \
bb_error_msg_and_die("line:%d c:%d", __LINE__, (c)); \
if ((syntax) < 0 || (syntax) > (2 + ENABLE_SH_MATH_SUPPORT)) \
if ((syntax) < 0 || (syntax) > (2 + ENABLE_FEATURE_SH_MATH)) \
bb_error_msg_and_die("line:%d c:%d", __LINE__, (c)); \
((S_I_T[syntax_index_table[c]] >> ((syntax)*4)) & 0xf); \
})
@ -4487,7 +4493,7 @@ cmdputs(const char *s)
case CTLBACKQ:
str = "$(...)";
goto dostr;
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
case CTLARI:
str = "$((";
goto dostr;
@ -5547,7 +5553,7 @@ redirectsafe(union node *redir, int flags)
* We have to deal with backquotes, shell variables, and file metacharacters.
*/
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
static arith_t
ash_arith(const char *s)
{
@ -5635,7 +5641,7 @@ static struct arglist exparg;
/*
* Our own itoa().
*/
#if !ENABLE_SH_MATH_SUPPORT
#if !ENABLE_FEATURE_SH_MATH
/* cvtnum() is used even if math support is off (to prepare $? values and such) */
typedef long arith_t;
# define ARITH_FMT "%ld"
@ -6148,7 +6154,7 @@ expbackq(union node *cmd, int flag)
stackblock() + startloc));
}
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
/*
* Expand arithmetic expression. Backup to start of expression,
* evaluate, place result in (backed up) result, adjust string position.
@ -6230,7 +6236,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
CTLESC,
CTLVAR,
CTLBACKQ,
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
CTLENDARI,
#endif
'\0'
@ -6266,7 +6272,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
c = p[length];
if (c) {
if (!(c & 0x80)
IF_SH_MATH_SUPPORT(|| c == CTLENDARI)
IF_FEATURE_SH_MATH(|| c == CTLENDARI)
) {
/* c == '=' || c == ':' || c == CTLENDARI */
length++;
@ -6346,7 +6352,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
expbackq(argbackq->n, flags | inquotes);
argbackq = argbackq->next;
goto start;
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
case CTLENDARI:
p--;
expari(flags | inquotes);
@ -9265,7 +9271,7 @@ static int helpcmd(int, char **) FAST_FUNC;
#if MAX_HISTORY
static int historycmd(int, char **) FAST_FUNC;
#endif
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
static int letcmd(int, char **) FAST_FUNC;
#endif
static int readcmd(int, char **) FAST_FUNC;
@ -9345,7 +9351,7 @@ static const struct builtincmd builtintab[] = {
{ BUILTIN_REGULAR "jobs" , jobscmd },
{ BUILTIN_REGULAR "kill" , killcmd },
#endif
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
{ BUILTIN_NOSPEC "let" , letcmd },
#endif
{ BUILTIN_ASSIGN "local" , localcmd },
@ -11394,13 +11400,13 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
smallint quotef;
smallint dblquote;
smallint oldstyle;
IF_SH_MATH_SUPPORT(smallint prevsyntax;) /* syntax before arithmetic */
IF_FEATURE_SH_MATH(smallint prevsyntax;) /* syntax before arithmetic */
#if ENABLE_ASH_EXPAND_PRMT
smallint pssyntax; /* we are expanding a prompt string */
#endif
int varnest; /* levels of variables expansion */
IF_SH_MATH_SUPPORT(int arinest;) /* levels of arithmetic expansion */
IF_SH_MATH_SUPPORT(int parenlevel;) /* levels of parens in arithmetic */
IF_FEATURE_SH_MATH(int arinest;) /* levels of arithmetic expansion */
IF_FEATURE_SH_MATH(int parenlevel;) /* levels of parens in arithmetic */
int dqvarnest; /* levels of variables expansion within double quotes */
IF_ASH_BASH_COMPAT(smallint bash_dollar_squote = 0;)
@ -11408,7 +11414,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
startlinno = g_parsefile->linno;
bqlist = NULL;
quotef = 0;
IF_SH_MATH_SUPPORT(prevsyntax = 0;)
IF_FEATURE_SH_MATH(prevsyntax = 0;)
#if ENABLE_ASH_EXPAND_PRMT
pssyntax = (syntax == PSSYNTAX);
if (pssyntax)
@ -11416,8 +11422,8 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
#endif
dblquote = (syntax == DQSYNTAX);
varnest = 0;
IF_SH_MATH_SUPPORT(arinest = 0;)
IF_SH_MATH_SUPPORT(parenlevel = 0;)
IF_FEATURE_SH_MATH(arinest = 0;)
IF_FEATURE_SH_MATH(parenlevel = 0;)
dqvarnest = 0;
STARTSTACKSTR(out);
@ -11524,7 +11530,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
}
USTPUTC(c, out);
break;
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
case CLP: /* '(' in arithmetic */
parenlevel++;
USTPUTC(c, out);
@ -11575,7 +11581,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
} /* for (;;) */
endword:
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
if (syntax == ARISYNTAX)
raise_error_syntax("missing '))'");
#endif
@ -11754,7 +11760,7 @@ parsesub: {
} else if (c == '(') {
/* $(command) or $((arith)) */
if (pgetc_eatbnl() == '(') {
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
PARSEARITH();
#else
raise_error_syntax("you disabled math support for $((arith)) syntax");
@ -12009,7 +12015,7 @@ parsebackq: {
goto parsebackq_newreturn;
}
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
/*
* Parse an arithmetic expansion (indicate start of one and set state)
*/
@ -13046,7 +13052,7 @@ timescmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
return 0;
}
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
/*
* The let builtin. Partially stolen from GNU Bash, the Bourne Again SHell.
* Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
@ -13301,15 +13307,6 @@ init(void)
//usage:#define ash_full_usage "\n\n"
//usage: "Unix shell interpreter"
//usage:#if ENABLE_FEATURE_SH_IS_ASH
//usage:# define sh_trivial_usage ash_trivial_usage
//usage:# define sh_full_usage ash_full_usage
//usage:#endif
//usage:#if ENABLE_FEATURE_BASH_IS_ASH
//usage:# define bash_trivial_usage ash_trivial_usage
//usage:# define bash_full_usage ash_full_usage
//usage:#endif
/*
* Process the shell command line arguments.
*/

59
shell/hush.c
View File

@ -99,7 +99,7 @@
//config:config HUSH_BASH_COMPAT
//config: bool "bash-compatible extensions"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable bash-compatible extensions.
//config:
@ -113,14 +113,14 @@
//config:config HUSH_HELP
//config: bool "help builtin"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable help builtin in hush. Code size + ~1 kbyte.
//config:
//config:config HUSH_INTERACTIVE
//config: bool "Interactive mode"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable interactive mode (prompt and command editing).
//config: Without this, hush simply reads and executes commands
@ -148,35 +148,35 @@
//config:config HUSH_TICK
//config: bool "Process substitution"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable process substitution `command` and $(command) in hush.
//config:
//config:config HUSH_IF
//config: bool "Support if/then/elif/else/fi"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable if/then/elif/else/fi in hush.
//config:
//config:config HUSH_LOOPS
//config: bool "Support for, while and until loops"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable for, while and until loops in hush.
//config:
//config:config HUSH_CASE
//config: bool "Support case ... esac statement"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable case ... esac statement in hush. +400 bytes.
//config:
//config:config HUSH_FUNCTIONS
//config: bool "Support funcname() { commands; } syntax"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable support for shell functions in hush. +800 bytes.
//config:
@ -190,7 +190,7 @@
//config:config HUSH_RANDOM_SUPPORT
//config: bool "Pseudorandom generator and $RANDOM variable"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: Enable pseudorandom generator and dynamic variable "$RANDOM".
//config: Each read of "$RANDOM" will generate a new pseudorandom value.
@ -198,14 +198,14 @@
//config:config HUSH_EXPORT_N
//config: bool "Support 'export -n' option"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: export -n unexports variables. It is a bash extension.
//config:
//config:config HUSH_MODE_X
//config: bool "Support 'hush -x' option and 'set -x' command"
//config: default y
//config: depends on HUSH
//config: depends on HUSH || SH_IS_HUSH || BASH_IS_HUSH
//config: help
//config: This instructs hush to print commands before execution.
//config: Adds ~300 bytes.
@ -216,14 +216,15 @@
//config: select HUSH
//config: help
//config: msh is deprecated and will be removed, please migrate to hush.
//config:
//applet:IF_HUSH(APPLET(hush, BB_DIR_BIN, BB_SUID_DROP))
//applet:IF_MSH(APPLET(msh, BB_DIR_BIN, BB_SUID_DROP))
//applet:IF_FEATURE_SH_IS_HUSH(APPLET_ODDNAME(sh, hush, BB_DIR_BIN, BB_SUID_DROP, sh))
//applet:IF_FEATURE_BASH_IS_HUSH(APPLET_ODDNAME(bash, hush, BB_DIR_BIN, BB_SUID_DROP, bash))
//applet:IF_MSH(APPLET_ODDNAME(msh, hush, BB_DIR_BIN, BB_SUID_DROP, hush))
//applet:IF_SH_IS_HUSH(APPLET_ODDNAME(sh, hush, BB_DIR_BIN, BB_SUID_DROP, hush))
//applet:IF_BASH_IS_HUSH(APPLET_ODDNAME(bash, hush, BB_DIR_BIN, BB_SUID_DROP, hush))
//kbuild:lib-$(CONFIG_HUSH) += hush.o match.o shell_common.o
//kbuild:lib-$(CONFIG_SH_IS_HUSH) += hush.o match.o shell_common.o
//kbuild:lib-$(CONFIG_BASH_IS_HUSH) += hush.o match.o shell_common.o
//kbuild:lib-$(CONFIG_HUSH_RANDOM_SUPPORT) += random.o
/* -i (interactive) and -s (read stdin) are also accepted,
@ -236,18 +237,6 @@
//usage:#define hush_full_usage "\n\n"
//usage: "Unix shell interpreter"
//usage:#define msh_trivial_usage hush_trivial_usage
//usage:#define msh_full_usage hush_full_usage
//usage:#if ENABLE_FEATURE_SH_IS_HUSH
//usage:# define sh_trivial_usage hush_trivial_usage
//usage:# define sh_full_usage hush_full_usage
//usage:#endif
//usage:#if ENABLE_FEATURE_BASH_IS_HUSH
//usage:# define bash_trivial_usage hush_trivial_usage
//usage:# define bash_full_usage hush_full_usage
//usage:#endif
#if !(defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
|| defined(__APPLE__) \
)
@ -4011,7 +4000,7 @@ static int i_peek_and_eat_bkslash_nl(struct in_str *input)
}
}
#if ENABLE_HUSH_TICK || ENABLE_SH_MATH_SUPPORT || ENABLE_HUSH_DOLLAR_OPS
#if ENABLE_HUSH_TICK || ENABLE_FEATURE_SH_MATH || ENABLE_HUSH_DOLLAR_OPS
/* Subroutines for copying $(...) and `...` things */
static int add_till_backquote(o_string *dest, struct in_str *input, int in_dquote);
/* '...' */
@ -4179,7 +4168,7 @@ static int add_till_closing_bracket(o_string *dest, struct in_str *input, unsign
}
return ch;
}
#endif /* ENABLE_HUSH_TICK || ENABLE_SH_MATH_SUPPORT || ENABLE_HUSH_DOLLAR_OPS */
#endif /* ENABLE_HUSH_TICK || ENABLE_FEATURE_SH_MATH || ENABLE_HUSH_DOLLAR_OPS */
/* Return code: 0 for OK, 1 for syntax error */
#if BB_MMU
@ -4333,13 +4322,13 @@ static int parse_dollar(o_string *as_string,
o_addchr(dest, SPECIAL_VAR_SYMBOL);
break;
}
#if ENABLE_SH_MATH_SUPPORT || ENABLE_HUSH_TICK
#if ENABLE_FEATURE_SH_MATH || ENABLE_HUSH_TICK
case '(': {
unsigned pos;
ch = i_getch(input);
nommu_addchr(as_string, ch);
# if ENABLE_SH_MATH_SUPPORT
# if ENABLE_FEATURE_SH_MATH
if (i_peek_and_eat_bkslash_nl(input) == '(') {
ch = i_getch(input);
nommu_addchr(as_string, ch);
@ -5217,7 +5206,7 @@ static char *encode_then_expand_string(const char *str, int process_bkslash, int
return exp_str;
}
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
static arith_t expand_and_evaluate_arith(const char *arg, const char **errmsg_p)
{
arith_state_t math_state;
@ -5469,7 +5458,7 @@ static NOINLINE const char *expand_one_var(char **to_be_freed_pp, char *arg, cha
}
#endif
else if (exp_op == ':') {
#if ENABLE_HUSH_BASH_COMPAT && ENABLE_SH_MATH_SUPPORT
#if ENABLE_HUSH_BASH_COMPAT && ENABLE_FEATURE_SH_MATH
/* It's ${var:N[:M]} bashism.
* Note that in encoded form it has TWO parts:
* var:N<SPECIAL_VAR_SYMBOL>M<SPECIAL_VAR_SYMBOL>
@ -5604,7 +5593,7 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg)
#if ENABLE_HUSH_TICK
o_string subst_result = NULL_O_STRING;
#endif
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
char arith_buf[sizeof(arith_t)*3 + 2];
#endif
@ -5698,7 +5687,7 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg)
val = subst_result.data;
goto store_val;
#endif
#if ENABLE_SH_MATH_SUPPORT
#if ENABLE_FEATURE_SH_MATH
case '+': { /* <SPECIAL_VAR_SYMBOL>+cmd<SPECIAL_VAR_SYMBOL> */
arith_t res;

2
shell/math.h
View File

@ -63,7 +63,7 @@
PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
#if ENABLE_SH_MATH_SUPPORT_64
#if ENABLE_FEATURE_SH_MATH_64
typedef long long arith_t;
#define ARITH_FMT "%lld"
#define strto_arith_t strtoull