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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
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95
shell/ash.c
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@@ -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.
*/