cli: Port upstream Busybox hush to U-Boot
Adds new file cli_hush_upstream.c, it is a copy of Busybox hush file as it was of
time to commit 37460f5da.
This commit modifies Busybox hush to not compile some part specific to Busybox
and adds some code needed by U-Boot.
The modifications consists mainly on adding code #if(n)def guards.
For the moment, this refurbished flavor of hush only permits running command
without any keywords (i.e., if and for are not recognized) or variable expansion
(i.e., echo $foo prints foo and not value stored in variable foo).
A new file was also added to define some functions specific to U-Boot.
Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>
Signed-off-by: Harald Seiler <hws@denx.de>
diff --git a/common/cli_hush_upstream.c b/common/cli_hush_upstream.c
index c970d90..3f2e4a5 100644
--- a/common/cli_hush_upstream.c
+++ b/common/cli_hush_upstream.c
@@ -343,6 +343,7 @@
//usage:#define hush_full_usage "\n\n"
//usage: "Unix shell interpreter"
+#ifndef __U_BOOT__
#if !(defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
|| defined(__APPLE__) \
)
@@ -378,6 +379,7 @@
#else
# define NUM_SCRIPTS 0
#endif
+#endif /* !__U_BOOT__ */
/* So far, all bash compat is controlled by one config option */
/* Separate defines document which part of code implements what */
@@ -421,10 +423,10 @@
# define USE_FOR_MMU(...)
#endif
+#ifndef __U_BOOT__
#include "NUM_APPLETS.h"
#if NUM_APPLETS == 1
/* STANDALONE does not make sense, and won't compile */
-# undef CONFIG_FEATURE_SH_STANDALONE
# undef ENABLE_FEATURE_SH_STANDALONE
# undef IF_FEATURE_SH_STANDALONE
# undef IF_NOT_FEATURE_SH_STANDALONE
@@ -432,6 +434,7 @@
# define IF_FEATURE_SH_STANDALONE(...)
# define IF_NOT_FEATURE_SH_STANDALONE(...) __VA_ARGS__
#endif
+#endif /* __U_BOOT__ */
#if !ENABLE_HUSH_INTERACTIVE
# undef ENABLE_FEATURE_EDITING
@@ -477,8 +480,13 @@
#define JOB_STATUS_FORMAT "[%u] %-22s %.40s\n"
#define _SPECIAL_VARS_STR "_*@$!?#-"
+#ifndef __U_BOOT__
#define SPECIAL_VARS_STR ("_*@$!?#-" + 1)
#define NUMERIC_SPECVARS_STR ("_*@$!?#-" + 3)
+#else /* __U_BOOT__ */
+#define SPECIAL_VARS_STR "*@$!?#-"
+#define NUMERIC_SPECVARS_STR "$!?#-"
+#endif /* __U_BOOT__ */
#if BASH_PATTERN_SUBST
/* Support / and // replace ops */
/* Note that // is stored as \ in "encoded" string representation */
@@ -511,6 +519,7 @@
} nommu_save_t;
#endif
+
enum {
RES_NONE = 0,
#if ENABLE_HUSH_IF
@@ -594,6 +603,7 @@
HFILE *file;
} in_str;
+#ifndef __U_BOOT__
/* The descrip member of this structure is only used to make
* debugging output pretty */
static const struct {
@@ -640,9 +650,12 @@
HEREDOC_QUOTED = 2,
} redir_type;
+#endif /* !__U_BOOT__ */
struct command {
+#ifndef __U_BOOT__
pid_t pid; /* 0 if exited */
+#endif /* !__U_BOOT__ */
unsigned assignment_cnt; /* how many argv[i] are assignments? */
#if ENABLE_HUSH_LINENO_VAR
unsigned lineno;
@@ -685,6 +698,9 @@
* (sets ->child_func->parent_cmd to NULL).
*/
#endif
+#ifdef __U_BOOT__
+ int argc; /* number of program arguments */
+#endif
char **argv; /* command name and arguments */
/* argv vector may contain variable references (^Cvar^C, ^C0^C etc)
* and on execution these are substituted with their values.
@@ -692,15 +708,23 @@
* Example: argv[0]=='.^C*^C.' here: echo .$*.
* References of the form ^C`cmd arg^C are `cmd arg` substitutions.
*/
+#ifndef __U_BOOT__
struct redir_struct *redirects; /* I/O redirections */
+#endif /* !__U_BOOT__ */
};
/* Is there anything in this command at all? */
+#ifndef __U_BOOT__
#define IS_NULL_CMD(cmd) \
(!(cmd)->group && !(cmd)->argv && !(cmd)->redirects)
+#else /* __U_BOOT__ */
+#define IS_NULL_CMD(cmd) \
+ (!(cmd)->group && !(cmd)->argv)
+#endif /* __U_BOOT__ */
struct pipe {
struct pipe *next;
int num_cmds; /* total number of commands in pipe */
+#ifndef __U_BOOT__
int alive_cmds; /* number of commands running (not exited) */
int stopped_cmds; /* number of commands alive, but stopped */
#if ENABLE_HUSH_JOB
@@ -708,6 +732,7 @@
pid_t pgrp; /* process group ID for the job */
char *cmdtext; /* name of job */
#endif
+#endif /* !__U_BOOT__ */
struct command *cmds; /* array of commands in pipe */
smallint followup; /* PIPE_BG, PIPE_SEQ, PIPE_OR, PIPE_AND */
IF_HAS_KEYWORDS(smallint pi_inverted;) /* "! cmd | cmd" */
@@ -731,8 +756,10 @@
struct pipe *pipe;
/* last command in pipe (being constructed right now) */
struct command *command;
+#ifndef __U_BOOT__
/* last redirect in command->redirects list */
struct redir_struct *pending_redirect;
+#endif /* !__U_BOOT__ */
o_string word;
#if !BB_MMU
o_string as_string;
@@ -766,19 +793,23 @@
WORD_IS_KEYWORD = 3,
};
+#ifndef __U_BOOT__
/* On program start, environ points to initial environment.
* putenv adds new pointers into it, unsetenv removes them.
* Neither of these (de)allocates the strings.
* setenv allocates new strings in malloc space and does putenv,
* and thus setenv is unusable (leaky) for shell's purposes */
#define setenv(...) setenv_is_leaky_dont_use()
+#endif /* !__U_BOOT__ */
struct variable {
struct variable *next;
char *varstr; /* points to "name=" portion */
int max_len; /* if > 0, name is part of initial env; else name is malloced */
+#ifndef __U_BOOT__
uint16_t var_nest_level;
smallint flg_export; /* putenv should be done on this var */
smallint flg_read_only;
+#endif /* !__U_BOOT__ */
};
enum {
@@ -850,6 +881,7 @@
/* "Globals" within this file */
/* Sorted roughly by size (smaller offsets == smaller code) */
struct globals {
+#ifndef __U_BOOT__
/* interactive_fd != 0 means we are an interactive shell.
* If we are, then saved_tty_pgrp can also be != 0, meaning
* that controlling tty is available. With saved_tty_pgrp == 0,
@@ -870,6 +902,10 @@
#else
# define G_interactive_fd 0
#endif
+#else /* __U_BOOT__ */
+# define G_interactive_fd 0
+#endif /* __U_BOOT__ */
+#ifndef __U_BOOT__
#if ENABLE_FEATURE_EDITING
line_input_t *line_input_state;
#endif
@@ -888,8 +924,10 @@
#else
# define G_saved_tty_pgrp 0
#endif
+#endif /* !__U_BOOT__ */
/* How deeply are we in context where "set -e" is ignored */
int errexit_depth;
+#ifndef __U_BOOT__
/* "set -e" rules (do we follow them correctly?):
* Exit if pipe, list, or compound command exits with a non-zero status.
* Shell does not exit if failed command is part of condition in
@@ -915,13 +953,16 @@
#endif
char opt_s;
char opt_c;
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_INTERACTIVE
smallint promptmode; /* 0: PS1, 1: PS2 */
#endif
smallint flag_SIGINT;
+#ifndef __U_BOOT__
#if ENABLE_HUSH_LOOPS
smallint flag_break_continue;
#endif
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_FUNCTIONS
/* 0: outside of a function (or sourced file)
* -1: inside of a function, ok to use return builtin
@@ -937,6 +978,7 @@
smalluint last_exitcode;
smalluint expand_exitcode;
smalluint last_bg_pid_exitcode;
+#ifndef __U_BOOT__
#if ENABLE_HUSH_SET
/* are global_argv and global_argv[1..n] malloced? (note: not [0]) */
smalluint global_args_malloced;
@@ -947,6 +989,7 @@
#if ENABLE_HUSH_BASH_COMPAT
int dead_job_exitcode; /* for "wait -n" */
#endif
+#endif /* !__U_BOOT__ */
/* how many non-NULL argv's we have. NB: $# + 1 */
int global_argc;
char **global_argv;
@@ -954,19 +997,30 @@
char *argv0_for_re_execing;
#endif
#if ENABLE_HUSH_LOOPS
+#ifndef __U_BOOT__
unsigned depth_break_continue;
+#endif /* !__U_BOOT__ */
unsigned depth_of_loop;
#endif
+#ifndef __U_BOOT__
#if ENABLE_HUSH_GETOPTS
unsigned getopt_count;
#endif
+#endif /* !__U_BOOT__ */
const char *ifs;
+#ifdef __U_BOOT__
+ int flag_repeat;
+ int do_repeat;
+#endif /* __U_BOOT__ */
char *ifs_whitespace; /* = G.ifs or malloced */
+#ifndef __U_BOOT__
const char *cwd;
+#endif /* !__U_BOOT__ */
struct variable *top_var;
char **expanded_assignments;
struct variable **shadowed_vars_pp;
unsigned var_nest_level;
+#ifndef __U_BOOT__
#if ENABLE_HUSH_FUNCTIONS
# if ENABLE_HUSH_LOCAL
unsigned func_nest_level; /* solely to prevent "local v" in non-functions */
@@ -1022,9 +1076,11 @@
int x_mode_fd;
o_string x_mode_buf;
#endif
+#endif /* !__U_BOOT__ */
#if HUSH_DEBUG >= 2
int debug_indent;
#endif
+#ifndef __U_BOOT__
struct sigaction sa;
char optstring_buf[sizeof("eixcs")];
#if BASH_EPOCH_VARS
@@ -1033,19 +1089,35 @@
#if ENABLE_FEATURE_EDITING
char user_input_buf[CONFIG_FEATURE_EDITING_MAX_LEN];
#endif
+#endif /* !__U_BOOT__ */
};
+#ifdef __U_BOOT__
+struct globals *ptr_to_globals;
+#endif /* __U_BOOT__ */
#define G (*ptr_to_globals)
/* Not #defining name to G.name - this quickly gets unwieldy
* (too many defines). Also, I actually prefer to see when a variable
* is global, thus "G." prefix is a useful hint */
+#ifdef __U_BOOT__
+#define SET_PTR_TO_GLOBALS(x) do { \
+ (*(struct globals**)&ptr_to_globals) = (void*)(x); \
+ barrier(); \
+} while (0)
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ G.promptmode = 1; \
+} while (0)
+#else /* !__U_BOOT__ */
#define INIT_G() do { \
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
/* memset(&G.sa, 0, sizeof(G.sa)); */ \
sigfillset(&G.sa.sa_mask); \
G.sa.sa_flags = SA_RESTART; \
} while (0)
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
/* Function prototypes for builtins */
static int builtin_cd(char **argv) FAST_FUNC;
#if ENABLE_HUSH_ECHO
@@ -1245,6 +1317,7 @@
#endif
};
+#endif /* !__U_BOOT__ */
/* Debug printouts.
*/
@@ -1396,7 +1469,11 @@
}
}
+#ifdef __U_BOOT__
+static void __maybe_unused msg_and_die_if_script(unsigned lineno, const char *fmt, ...)
+#else /* !__U_BOOT__ */
static void msg_and_die_if_script(unsigned lineno, const char *fmt, ...)
+#endif /* !__U_BOOT__ */
{
va_list p;
@@ -1409,6 +1486,7 @@
die_if_script();
}
+#ifndef __U_BOOT__
static void syntax_error(unsigned lineno UNUSED_PARAM, const char *msg)
{
if (msg)
@@ -1417,6 +1495,7 @@
bb_simple_error_msg("syntax error");
die_if_script();
}
+#endif /* !__U_BOOT__ */
static void syntax_error_at(unsigned lineno UNUSED_PARAM, const char *msg)
{
@@ -1465,13 +1544,16 @@
# define syntax_error_unexpected_ch(ch) syntax_error_unexpected_ch(__LINE__, ch)
#endif
-
/* Utility functions
*/
/* Replace each \x with x in place, return ptr past NUL. */
static char *unbackslash(char *src)
{
+#ifdef __U_BOOT__
+ char *dst = src = (char *)strchrnul(src, '\\');
+#else /* !__U_BOOT__ */
char *dst = src = strchrnul(src, '\\');
+#endif /* !__U_BOOT__ */
while (1) {
if (*src == '\\') {
src++;
@@ -1539,6 +1621,7 @@
v[1] = NULL;
return add_strings_to_strings(strings, v, /*dup:*/ 0);
}
+
#if LEAK_HUNTING
static char **xx_add_string_to_strings(int lineno, char **strings, char *add)
{
@@ -1564,6 +1647,7 @@
free(strings);
}
+#ifndef __U_BOOT__
static int dup_CLOEXEC(int fd, int avoid_fd)
{
int newfd;
@@ -1749,6 +1833,7 @@
return 0;
}
+#endif /* !__U_BOOT__ */
/* Helpers for setting new $n and restoring them back
*/
@@ -1756,9 +1841,12 @@
char *sv_argv0;
char **sv_g_argv;
int sv_g_argc;
+#ifndef __U_BOOT__
IF_HUSH_SET(smallint sv_g_malloced;)
+#endif /* !__U_BOOT__ */
} save_arg_t;
+#ifndef __U_BOOT__
static void save_and_replace_G_args(save_arg_t *sv, char **argv)
{
sv->sv_argv0 = argv[0];
@@ -1789,8 +1877,10 @@
G.global_argc = sv->sv_g_argc;
IF_HUSH_SET(G.global_args_malloced = sv->sv_g_malloced;)
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
/* Basic theory of signal handling in shell
* ========================================
* This does not describe what hush does, rather, it is current understanding
@@ -1969,7 +2059,9 @@
sigaction(sig, &G.sa, &old_sa);
return old_sa.sa_handler;
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
static void hush_exit(int exitcode) NORETURN;
static void restore_ttypgrp_and__exit(void) NORETURN;
@@ -2039,7 +2131,9 @@
# define enable_restore_tty_pgrp_on_exit() ((void)0)
#endif
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
static sighandler_t pick_sighandler(unsigned sig)
{
sighandler_t handler = SIG_DFL;
@@ -2066,7 +2160,9 @@
}
return handler;
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
/* Restores tty foreground process group, and exits. */
static void hush_exit(int exitcode)
{
@@ -2226,6 +2322,7 @@
return G.cwd;
}
+#endif /* !__U_BOOT__ */
/*
* Shell and environment variable support
@@ -2263,8 +2360,10 @@
if (vpp)
return (*vpp)->varstr + len + 1;
+#ifndef __U_BOOT__
if (strcmp(name, "PPID") == 0)
return utoa(G.root_ppid);
+#endif /* !__U_BOOT__ */
// bash compat: UID? EUID?
#if ENABLE_HUSH_RANDOM_SUPPORT
if (strcmp(name, "RANDOM") == 0)
@@ -2293,6 +2392,7 @@
return NULL;
}
+#ifndef __U_BOOT__
#if ENABLE_HUSH_GETOPTS
static void handle_changed_special_names(const char *name, unsigned name_len)
{
@@ -2307,15 +2407,25 @@
/* Do not even bother evaluating arguments */
# define handle_changed_special_names(...) ((void)0)
#endif
+#else /* __U_BOOT__ */
+/* Do not even bother evaluating arguments */
+# define handle_changed_special_names(...) ((void)0)
+#endif /* __U_BOOT__ */
/* str holds "NAME=VAL" and is expected to be malloced.
* We take ownership of it.
*/
+#ifndef __U_BOOT__
#define SETFLAG_EXPORT (1 << 0)
#define SETFLAG_UNEXPORT (1 << 1)
#define SETFLAG_MAKE_RO (1 << 2)
+#endif /* !__U_BOOT__ */
#define SETFLAG_VARLVL_SHIFT 3
+#ifndef __U_BOOT__
static int set_local_var(char *str, unsigned flags)
+#else /* __U_BOOT__ */
+int set_local_var_modern(char *str, int flags)
+#endif /* __U_BOOT__ */
{
struct variable **cur_pp;
struct variable *cur;
@@ -2323,7 +2433,9 @@
char *eq_sign;
int name_len;
int retval;
+#ifndef __U_BOOT__
unsigned local_lvl = (flags >> SETFLAG_VARLVL_SHIFT);
+#endif /* !__U_BOOT__ */
eq_sign = strchr(str, '=');
if (HUSH_DEBUG && !eq_sign)
@@ -2337,6 +2449,7 @@
continue;
}
+#ifndef __U_BOOT__
/* We found an existing var with this name */
if (cur->flg_read_only) {
bb_error_msg("%s: readonly variable", str);
@@ -2389,6 +2502,7 @@
}
break;
}
+#endif /* !__U_BOOT__ */
if (strcmp(cur->varstr + name_len, eq_sign + 1) == 0) {
debug_printf_env("assignement '%s' does not change anything\n", str);
@@ -2420,15 +2534,22 @@
}
/* Not found or shadowed - create new variable struct */
+#ifndef __U_BOOT__
debug_printf_env("%s: alloc new var '%s'/%u\n", __func__, str, local_lvl);
+#else /* __U_BOOT__ */
+ debug_printf_env("%s: alloc new var '%s'\n", __func__, str);
+#endif /* __U_BOOT__ */
cur = xzalloc(sizeof(*cur));
+#ifndef __U_BOOT__
cur->var_nest_level = local_lvl;
+#endif /* !__U_BOOT__ */
cur->next = *cur_pp;
*cur_pp = cur;
set_str_and_exp:
cur->varstr = str;
exp:
+#ifndef __U_BOOT__
#if !BB_MMU || ENABLE_HUSH_READONLY
if (flags & SETFLAG_MAKE_RO) {
cur->flg_read_only = 1;
@@ -2436,7 +2557,9 @@
#endif
if (flags & SETFLAG_EXPORT)
cur->flg_export = 1;
+#endif /* !__U_BOOT__ */
retval = 0;
+#ifndef __U_BOOT__
if (cur->flg_export) {
if (flags & SETFLAG_UNEXPORT) {
cur->flg_export = 0;
@@ -2449,6 +2572,7 @@
*/
}
}
+#endif /* !__U_BOOT__ */
free(free_me);
handle_changed_special_names(cur->varstr, name_len - 1);
@@ -2456,6 +2580,7 @@
return retval;
}
+#ifndef __U_BOOT__
static void FAST_FUNC set_local_var_from_halves(const char *name, const char *val)
{
char *var = xasprintf("%s=%s", name, val);
@@ -2467,6 +2592,7 @@
{
set_local_var(xasprintf("PWD=%s", get_cwd(/*force:*/ 1)), flag);
}
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_UNSET || ENABLE_HUSH_GETOPTS
static int unset_local_var_len(const char *name, int name_len)
@@ -2509,6 +2635,7 @@
#endif
+#ifndef __U_BOOT__
/*
* Helpers for "var1=val1 var2=val2 cmd" feature
*/
@@ -2602,11 +2729,13 @@
}
}
+#endif /* !__U_BOOT__ */
/*
* in_str support (strings, and "strings" read from files).
*/
#if ENABLE_HUSH_INTERACTIVE
+#ifndef __U_BOOT__
/* To test correct lineedit/interactive behavior, type from command line:
* echo $P\
* \
@@ -2639,8 +2768,15 @@
debug_printf("prompt_str '%s'\n", prompt_str);
return prompt_str;
}
+#endif /* !__U_BOOT__ */
+
+#ifndef __U_BOOT__
static int get_user_input(struct in_str *i)
+#else /* __U_BOOT__ */
+static void get_user_input(struct in_str *i)
+#endif /* __U_BOOT__ */
{
+#ifndef __U_BOOT__
# if ENABLE_FEATURE_EDITING
/* In EDITING case, this function reads next input line,
* saves it in i->p, then returns 1st char of it.
@@ -2716,37 +2852,139 @@
}
return r;
# endif
+#else /* __U_BOOT__ */
+ int n;
+ int promptme;
+ static char the_command[CONFIG_SYS_CBSIZE + 1];
+
+ bootretry_reset_cmd_timeout();
+ promptme = 1;
+ n = u_boot_cli_readline(i);
+
+# ifdef CONFIG_BOOT_RETRY_TIME
+ if (n == -2) {
+ puts("\nTimeout waiting for command\n");
+# ifdef CONFIG_RESET_TO_RETRY
+ do_reset(NULL, 0, 0, NULL);
+# else
+# error "This currently only works with CONFIG_RESET_TO_RETRY enabled"
+# endif
+ }
+# endif
+ if (n == -1 ) {
+ G.flag_repeat = 0;
+ promptme = 0;
+ }
+ n = strlen(console_buffer);
+ console_buffer[n] = '\n';
+ console_buffer[n+1]= '\0';
+ if (had_ctrlc())
+ G.flag_repeat = 0;
+ clear_ctrlc();
+ G.do_repeat = 0;
+#ifndef __U_BOOT__
+ if (G.promptmode == 1) {
+#else /* __U_BOOT__ */
+ if (!G.promptmode) {
+#endif /* __U_BOOT__ */
+ if (console_buffer[0] == '\n'&& G.flag_repeat == 0) {
+ strcpy(the_command, console_buffer);
+ }
+ else {
+ if (console_buffer[0] != '\n') {
+ strcpy(the_command, console_buffer);
+ G.flag_repeat = 1;
+ }
+ else {
+ G.do_repeat = 1;
+ }
+ }
+ i->p = the_command;
+ }
+ else {
+ if (console_buffer[0] != '\n') {
+ if (strlen(the_command) + strlen(console_buffer)
+ < CONFIG_SYS_CBSIZE) {
+ n = strlen(the_command);
+#ifdef __U_BOOT__
+ /*
+ * To avoid writing to bad places, we check if
+ * n is greater than 0.
+ * This bug was found by Harald Seiler.
+ */
+ if (n > 0)
+ the_command[n-1] = ' ';
+ strcpy(&the_command[n], console_buffer);
+#else /* !__U_BOOT__ */
+ the_command[n-1] = ' ';
+ strcpy(&the_command[n], console_buffer);
+#endif /* !__U_BOOT__ */
+ }
+ else {
+ the_command[0] = '\n';
+ the_command[1] = '\0';
+ G.flag_repeat = 0;
+ }
+ }
+ if (promptme == 0) {
+ the_command[0] = '\n';
+ the_command[1] = '\0';
+ }
+ i->p = console_buffer;
+ }
+#endif /* __U_BOOT__ */
}
/* This is the magic location that prints prompts
* and gets data back from the user */
static int fgetc_interactive(struct in_str *i)
{
int ch;
+#ifndef __U_BOOT__
/* If it's interactive stdin, get new line. */
if (G_interactive_fd && i->file == G.HFILE_stdin) {
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
/* Returns first char (or EOF), the rest is in i->p[] */
ch = get_user_input(i);
+#else /* __U_BOOT__ */
+ /* Avoid garbage value and make clang happy. */
+ ch = 0;
+ /*
+ * get_user_input() does not return anything when used in
+ * U-Boot.
+ * So, we need to take the read character from i->p[].
+ */
+ get_user_input(i);
+ if (i->p && *i->p) {
+ ch = *i->p++;
+ }
+#endif /* __U_BOOT__ */
G.promptmode = 1; /* PS2 */
debug_printf_prompt("%s promptmode=%d\n", __func__, G.promptmode);
+#ifndef __U_BOOT__
} else {
/* Not stdin: script file, sourced file, etc */
do ch = hfgetc(i->file); while (ch == '\0');
}
+#endif /* !__U_BOOT__ */
return ch;
}
#else /* !INTERACTIVE */
+#ifndef __U_BOOT__
static ALWAYS_INLINE int fgetc_interactive(struct in_str *i)
{
int ch;
do ch = hfgetc(i->file); while (ch == '\0');
return ch;
}
+#endif /* !__U_BOOT__ */
#endif /* !INTERACTIVE */
static int i_getch(struct in_str *i)
{
int ch;
+#ifndef __U_BOOT__
if (!i->file) {
/* string-based in_str */
ch = (unsigned char)*i->p;
@@ -2758,6 +2996,7 @@
return EOF;
}
+#endif /* !__U_BOOT__ */
/* FILE-based in_str */
#if ENABLE_FEATURE_EDITING
@@ -2767,6 +3006,7 @@
goto out;
}
#endif
+#ifndef __U_BOOT__
/* peek_buf[] is an int array, not char. Can contain EOF. */
ch = i->peek_buf[0];
if (ch != 0) {
@@ -2778,6 +3018,7 @@
goto out;
}
+#endif /* !__U_BOOT__ */
ch = fgetc_interactive(i);
out:
debug_printf("file_get: got '%c' %d\n", ch, ch);
@@ -2793,6 +3034,7 @@
static int i_peek(struct in_str *i)
{
+#ifndef __U_BOOT__
int ch;
if (!i->file) {
@@ -2827,6 +3069,11 @@
i->peek_buf[0] = ch;
/*i->peek_buf[1] = 0; - already is */
return ch;
+#else /* __U_BOOT__ */
+ /* string-based in_str */
+ /* Doesn't report EOF on NUL. None of the callers care. */
+ return (unsigned char)*i->p;
+#endif /* __U_BOOT__ */
}
/* Only ever called if i_peek() was called, and did not return EOF.
@@ -2835,7 +3082,9 @@
*/
static int i_peek2(struct in_str *i)
{
+#ifndef __U_BOOT__
int ch;
+#endif /* !__U_BOOT__ */
/* There are two cases when i->p[] buffer exists.
* (1) it's a string in_str.
@@ -2846,6 +3095,7 @@
if (i->p)
return (unsigned char)i->p[1];
+#ifndef __U_BOOT__
/* Now we know it is a file-based in_str. */
/* peek_buf[] is an int array, not char. Can contain EOF. */
@@ -2859,6 +3109,9 @@
debug_printf("file_peek2: got '%c' %d\n", ch, ch);
return ch;
+#else
+ return 0;
+#endif /* __U_BOOT__ */
}
static int i_getch_and_eat_bkslash_nl(struct in_str *input)
@@ -2897,13 +3150,20 @@
}
}
+#ifndef __U_BOOT__
static void setup_file_in_str(struct in_str *i, HFILE *fp)
+#else /* __U_BOOT__ */
+static void setup_file_in_str(struct in_str *i)
+#endif /* __U_BOOT__ */
{
memset(i, 0, sizeof(*i));
+#ifndef __U_BOOT__
i->file = fp;
/* i->p = NULL; */
+#endif /* !__U_BOOT__ */
}
+#ifndef __U_BOOT__
static void setup_string_in_str(struct in_str *i, const char *s)
{
memset(i, 0, sizeof(*i));
@@ -2911,6 +3171,7 @@
i->p = s;
}
+#endif /* !__U_BOOT__ */
/*
* o_string support
@@ -2980,10 +3241,12 @@
o_addblock(o, str, strlen(str));
}
+#ifndef __U_BOOT__
static void o_addstr_with_NUL(o_string *o, const char *str)
{
o_addblock(o, str, strlen(str) + 1);
}
+#endif /* !__U_BOOT__ */
#if !BB_MMU
static void nommu_addchr(o_string *o, int ch)
@@ -2995,6 +3258,7 @@
# define nommu_addchr(o, str) ((void)0)
#endif
+#ifndef __U_BOOT__
#if ENABLE_HUSH_MODE_X
static void x_mode_addchr(int ch)
{
@@ -3025,6 +3289,7 @@
G.x_mode_buf.length = 0;
}
#endif
+#endif /* !__U_BOOT__ */
/*
* HUSH_BRACE_EXPANSION code needs corresponding quoting on variable expansion side.
@@ -3156,7 +3421,11 @@
if (n) {
const char *p = o->data + (int)(uintptr_t)list[n - 1] + string_start;
indent();
+#ifndef __U_BOOT__
fdprintf(2, " total_sz:%ld\n", (long)((p + strlen(p) + 1) - o->data));
+#else /* __U_BOOT__ */
+ printf(" total_sz:%ld\n", (long)((p + strlen(p) + 1) - o->data));
+#endif /* __U_BOOT__ */
}
}
#else
@@ -3216,6 +3485,7 @@
return ((int)(uintptr_t)list[n-1]) + string_start;
}
+#ifndef __U_BOOT__
/*
* Globbing routines.
*
@@ -3524,12 +3794,14 @@
return n;
}
+#endif /* !__U_BOOT__ */
#endif /* !HUSH_BRACE_EXPANSION */
/* If o->o_expflags & EXP_FLAG_GLOB, glob the string so far remembered.
* Otherwise, just finish current list[] and start new */
static int o_save_ptr(o_string *o, int n)
{
+#ifndef __U_BOOT__
if (o->o_expflags & EXP_FLAG_GLOB) {
/* If o->has_empty_slot, list[n] was already globbed
* (if it was requested back then when it was filled)
@@ -3537,6 +3809,7 @@
if (!o->has_empty_slot)
return perform_glob(o, n); /* o_save_ptr_helper is inside */
}
+#endif /* !__U_BOOT__ */
return o_save_ptr_helper(o, n);
}
@@ -3567,10 +3840,14 @@
struct pipe *next;
int i;
+#ifndef __U_BOOT__
debug_printf_clean("free_pipe (pid %d)\n", getpid());
+#endif /* !__U_BOOT__ */
for (i = 0; i < pi->num_cmds; i++) {
struct command *command;
+#ifndef __U_BOOT__
struct redir_struct *r, *rnext;
+#endif /* !__U_BOOT__ */
command = &pi->cmds[i];
debug_printf_clean(" command %d:\n", i);
@@ -3605,6 +3882,7 @@
free(command->group_as_string);
//command->group_as_string = NULL;
#endif
+#ifndef __U_BOOT__
for (r = command->redirects; r; r = rnext) {
debug_printf_clean(" redirect %d%s",
r->rd_fd, redir_table[r->rd_type].descrip);
@@ -3619,13 +3897,16 @@
free(r);
}
//command->redirects = NULL;
+#endif /* !__U_BOOT__ */
}
free(pi->cmds); /* children are an array, they get freed all at once */
//pi->cmds = NULL;
+#ifndef __U_BOOT__
#if ENABLE_HUSH_JOB
free(pi->cmdtext);
//pi->cmdtext = NULL;
#endif
+#endif /* !__U_BOOT__ */
next = pi->next;
free(pi);
@@ -3655,6 +3936,7 @@
[PIPE_OR ] = "OR" ,
[PIPE_BG ] = "BG" ,
};
+#ifndef __U_BOOT__
static const char *RES[] = {
[RES_NONE ] = "NONE" ,
# if ENABLE_HUSH_IF
@@ -3684,6 +3966,7 @@
[RES_XXXX ] = "XXXX" ,
[RES_SNTX ] = "SNTX" ,
};
+#endif /* !__U_BOOT__ */
static const char *const CMDTYPE[] = {
"{}",
"()",
@@ -3701,8 +3984,10 @@
lvl*2, "",
pin,
pi->num_cmds,
+#ifdef __U_BOOT__
(IF_HAS_KEYWORDS(pi->pi_inverted ? "! " :) ""),
RES[pi->res_word],
+#endif /* !__U_BOOT__ */
pi->followup, PIPE[pi->followup]
);
prn = 0;
@@ -3734,8 +4019,10 @@
fdprintf(2, " '%s'", *argv);
argv++;
}
+#ifndef __U_BOOT__
if (command->redirects)
fdprintf(2, " {redir}");
+#endif /* __U_BOOT__ */
fdprintf(2, "\n");
prn++;
}
@@ -3869,8 +4156,13 @@
) {
struct pipe *new_p;
debug_printf_parse("done_pipe: adding new pipe: "
+#ifndef __U_BOOT__
"not_null:%d ctx->ctx_res_w:%d\n",
not_null, ctx->ctx_res_w);
+#else /* __U_BOOT__ */
+ "not_null:%d\n",
+ not_null);
+#endif /* __U_BOOT__ */
new_p = new_pipe();
ctx->pipe->next = new_p;
ctx->pipe = new_p;
@@ -4096,6 +4388,7 @@
return 0;
}
+#ifndef __U_BOOT__
if (ctx->pending_redirect) {
/* We do not glob in e.g. >*.tmp case. bash seems to glob here
* only if run as "bash", not "sh" */
@@ -4137,6 +4430,7 @@
debug_printf_parse("word stored in rd_filename: '%s'\n", ctx->word.data);
ctx->pending_redirect = NULL;
} else {
+#endif /* !__U_BOOT__ */
#if HAS_KEYWORDS
# if ENABLE_HUSH_CASE
if (ctx->ctx_dsemicolon
@@ -4247,8 +4541,14 @@
}
debug_printf_parse("ctx->is_assignment='%s'\n", assignment_flag[ctx->is_assignment]);
command->argv = add_string_to_strings(command->argv, xstrdup(ctx->word.data));
+#ifdef __U_BOOT__
+ command->argc++;
+#endif /* __U_BOOT__ */
debug_print_strings("word appended to argv", command->argv);
+
+#ifndef __U_BOOT__
}
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_LOOPS
if (ctx->ctx_res_w == RES_FOR) {
@@ -4280,6 +4580,7 @@
}
+#ifndef __U_BOOT__
/* Peek ahead in the input to find out if we have a "&n" construct,
* as in "2>&1", that represents duplicating a file descriptor.
* Return:
@@ -4463,7 +4764,11 @@
nommu_addchr(as_string, ch);
if (ch == '\n' || ch == EOF) {
check_heredoc_end:
+#ifndef __U_BOOT__
if ((heredoc_flags & HEREDOC_QUOTED) || prev != '\\') {
+#else /* __U_BOOT__ */
+ if (prev != '\\') {
+#endif
/* End-of-line, and not a line continuation */
if (strcmp(heredoc.data + past_EOL, word) == 0) {
heredoc.data[past_EOL] = '\0';
@@ -4483,7 +4788,11 @@
ch = i_getch(input);
if (ch != EOF)
nommu_addchr(as_string, ch);
+#ifndef __U_BOOT__
} while ((heredoc_flags & HEREDOC_SKIPTABS) && ch == '\t');
+#else /* __U_BOOT__ */
+ } while (ch == '\t');
+#endif
/* If this immediately ended the line,
* go back to end-of-line checks.
*/
@@ -4520,6 +4829,7 @@
prev = ch;
}
}
+#endif /* !__U_BOOT__ */
/* Look at entire parse tree for not-yet-loaded REDIRECT_HEREDOCs
* and load them all. There should be exactly heredoc_cnt of them.
@@ -4539,10 +4849,13 @@
cmd->argv ? cmd->argv[0] : "NONE"
);
for (i = 0; i < pi->num_cmds; i++) {
+#ifndef __U_BOOT__
struct redir_struct *redir = cmd->redirects;
+#endif /* !__U_BOOT__ */
debug_printf_heredoc("fetch_heredocs: %d cmd argv0:'%s'\n",
i, cmd->argv ? cmd->argv[0] : "NONE");
+#ifndef __U_BOOT__
while (redir) {
if (redir->rd_type == REDIRECT_HEREDOC) {
char *p;
@@ -4561,6 +4874,7 @@
}
redir = redir->next;
}
+#endif /* !__U_BOOT__ */
if (cmd->group) {
//bb_error_msg("%s:%u heredoc_cnt:%d", __func__, __LINE__, heredoc_cnt);
heredoc_cnt = fetch_heredocs(as_string, cmd->group, heredoc_cnt, input);
@@ -4651,13 +4965,17 @@
}
#endif
+#ifndef __U_BOOT__
IF_HUSH_FUNCTIONS(skip:)
+#endif /* !__U_BOOT__ */
endch = '}';
if (ch == '(') {
endch = ')';
+#ifndef __U_BOOT__
IF_HUSH_FUNCTIONS(if (command->cmd_type != CMD_FUNCDEF))
command->cmd_type = CMD_SUBSHELL;
+#endif /* !__U_BOOT__ */
} else {
/* bash does not allow "{echo...", requires whitespace */
ch = i_peek(input);
@@ -4725,6 +5043,7 @@
#undef as_string
}
+#ifndef __U_BOOT__
#if ENABLE_HUSH_TICK || ENABLE_FEATURE_SH_MATH || ENABLE_HUSH_DOLLAR_OPS
/* Subroutines for copying $(...) and `...` things */
/* '...' */
@@ -4754,6 +5073,7 @@
o_addqchr(dest, ch);
}
}
+
/* "...\"...`..`...." - do we need to handle "...$(..)..." too? */
static int add_till_backquote(o_string *dest, struct in_str *input, int in_dquote);
static int add_till_double_quote(o_string *dest, struct in_str *input)
@@ -4780,6 +5100,8 @@
//if (ch == '$') ...
}
}
+
+
/* Process `cmd` - copy contents until "`" is seen. Complicated by
* \` quoting.
* "Within the backquoted style of command substitution, backslash
@@ -5014,6 +5336,7 @@
#else
# #define parse_dollar_squote(as_string, dest, input) 0
#endif /* BASH_DOLLAR_SQUOTE */
+#endif /* !__U_BOOT__ */
/* Return code: 0 for OK, 1 for syntax error */
#if BB_MMU
@@ -5056,8 +5379,10 @@
o_addchr(dest, ch | quote_mask);
o_addchr(dest, SPECIAL_VAR_SYMBOL);
} else switch (ch) {
+#ifndef __U_BOOT__
case '$': /* pid */
case '!': /* last bg pid */
+#endif /* !__U_BOOT__ */
case '?': /* last exit code */
case '#': /* number of args */
case '*': /* args */
@@ -5132,7 +5457,9 @@
break;
if (!isalnum(ch) && ch != '_') {
unsigned end_ch;
+#ifndef __U_BOOT__
unsigned char last_ch;
+#endif /* !__U_BOOT__ */
/* handle parameter expansions
* http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_02
*/
@@ -5151,6 +5478,7 @@
eat_until_closing:
/* Eat everything until closing '}' (or ':') */
end_ch = '}';
+#ifndef __U_BOOT__
if (BASH_SUBSTR
&& ch == ':'
&& !strchr(MINUS_PLUS_EQUAL_QUESTION, i_peek(input))
@@ -5169,6 +5497,7 @@
}
end_ch = '}' * 0x100 + '/';
}
+#endif /* !__U_BOOT__ */
o_addchr(dest, ch);
/* The pattern can't be empty.
* IOW: if the first char after "${v//" is a slash,
@@ -5179,21 +5508,28 @@
if (i_peek(input) == '/') {
o_addchr(dest, i_getch(input));
}
+#ifndef __U_BOOT__
again:
+#endif /* !__U_BOOT__ */
if (!BB_MMU)
pos = dest->length;
#if ENABLE_HUSH_DOLLAR_OPS
+#ifndef __U_BOOT__
last_ch = add_till_closing_bracket(dest, input, end_ch);
if (last_ch == 0) /* error? */
return 0;
+#endif /* !__U_BOOT__ */
#else
# error Simple code to only allow ${var} is not implemented
#endif
if (as_string) {
o_addstr(as_string, dest->data + pos);
+#ifndef __U_BOOT__
o_addchr(as_string, last_ch);
+#endif /* !__U_BOOT__ */
}
+#ifndef __U_BOOT__
if ((BASH_SUBSTR || BASH_PATTERN_SUBST)
&& (end_ch & 0xff00)
) {
@@ -5212,6 +5548,7 @@
o_addstr(dest, "999999999");
} /* else: it's ${var/[/]pattern} */
}
+#endif /* !__U_BOOT__ */
break;
}
len_single_ch = 0; /* it can't be ${#C} op */
@@ -5415,8 +5752,10 @@
const char *is_special;
int ch;
int next;
+#ifndef __U_BOOT__
int redir_fd;
redir_type redir_style;
+#endif /* !__U_BOOT__ */
ch = i_getch(input);
debug_printf_parse(": ch=%c (%d) escape=%d\n",
@@ -5506,8 +5845,10 @@
if (ch == '\'') {
ctx.word.has_quoted_part = 1;
next = i_getch(input);
+#ifndef __U_BOOT__
if (next == '\'' && !ctx.pending_redirect)
goto insert_empty_quoted_str_marker;
+#endif /* !__U_BOOT__ */
ch = next;
while (1) {
@@ -5534,7 +5875,11 @@
next = i_peek_and_eat_bkslash_nl(input);
is_special = "{}<>&|();#" /* special outside of "str" */
+#ifndef __U_BOOT__
"$\"" IF_HUSH_TICK("`") /* always special */
+#else /* __U_BOOT__ */
+ "$\""
+#endif /* __U_BOOT__ */
SPECIAL_VAR_SYMBOL_STR;
#if defined(CMD_TEST2_SINGLEWORD_NOGLOB)
if (ctx.command->cmd_type == CMD_TEST2_SINGLEWORD_NOGLOB) {
@@ -5649,7 +5994,11 @@
* } is an ordinary char in this case, even inside { cmd; }
* Pathological example: { ""}; } should exec "}" cmd
*/
+#ifndef __U_BOOT__
if (ch == '}') {
+#else /* __U_BOOT__ */
+ if (ch == '}' || ch == ')') {
+#endif /* __U_BOOT__ */
if (ctx.word.length != 0 /* word} */
|| ctx.word.has_quoted_part /* ""} */
) {
@@ -5725,6 +6074,7 @@
/* Catch <, > before deciding whether this word is
* an assignment. a=1 2>z b=2: b=2 is still assignment */
switch (ch) {
+#ifndef __U_BOOT__
case '>':
redir_fd = redirect_opt_num(&ctx.word);
if (done_word(&ctx)) {
@@ -5771,6 +6121,7 @@
if (parse_redirect(&ctx, redir_fd, redir_style, input))
goto parse_error_exitcode1;
continue; /* get next char */
+#endif /* !__U_BOOT__ */
case '#':
if (ctx.word.length == 0 && !ctx.word.has_quoted_part) {
/* skip "#comment" */
@@ -5798,8 +6149,10 @@
skip_end_trigger:
if (ctx.is_assignment == MAYBE_ASSIGNMENT
+#ifndef __U_BOOT__
/* check that we are not in word in "a=1 2>word b=1": */
&& !ctx.pending_redirect
+#endif /* !__U_BOOT__ */
) {
/* ch is a special char and thus this word
* cannot be an assignment */
@@ -5821,8 +6174,10 @@
o_addchr(&ctx.word, ch);
continue; /* get next char */
case '$':
+#ifndef __U_BOOT__
if (parse_dollar_squote(&ctx.as_string, &ctx.word, input))
continue; /* get next char */
+#endif /* !__U_BOOT__ */
if (!parse_dollar(&ctx.as_string, &ctx.word, input, /*quote_mask:*/ 0)) {
debug_printf_parse("parse_stream parse error: "
"parse_dollar returned 0 (error)\n");
@@ -5831,9 +6186,15 @@
continue; /* get next char */
case '"':
ctx.word.has_quoted_part = 1;
+#ifndef __U_BOOT__
if (next == '"' && !ctx.pending_redirect) {
+#else /* __U_BOOT__ */
+ if (next == '"') {
+#endif /* __U_BOOT__ */
i_getch(input); /* eat second " */
+#ifndef __U_BOOT__
insert_empty_quoted_str_marker:
+#endif /* !__U_BOOT__ */
nommu_addchr(&ctx.as_string, next);
o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL);
o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL);
@@ -6140,6 +6501,7 @@
return n;
}
+#ifndef __U_BOOT__
/* Helper to expand $((...)) and heredoc body. These act as if
* they are in double quotes, with the exception that they are not :).
* Just the rules are similar: "expand only $var and `cmd`"
@@ -6440,7 +6802,9 @@
o_free(&dest);
return n;
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
#if ENABLE_FEATURE_SH_MATH
static arith_t expand_and_evaluate_arith(const char *arg, const char **errmsg_p)
{
@@ -6461,7 +6825,9 @@
return res;
}
#endif
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
#if BASH_PATTERN_SUBST
/* ${var/[/]pattern[/repl]} helpers */
static char *strstr_pattern(char *val, const char *pattern, int *size)
@@ -6529,6 +6895,7 @@
return result;
}
#endif /* BASH_PATTERN_SUBST */
+#endif /* !__U_BOOT__ */
static int append_str_maybe_ifs_split(o_string *output, int n,
int first_ch, const char *val)
@@ -6593,6 +6960,7 @@
exp_saveptr = var+1 + strcspn(var+1, VAR_ENCODED_SUBST_OPS);
}
exp_op = exp_save = *exp_saveptr;
+#ifndef __U_BOOT__
if (exp_op) {
exp_word = exp_saveptr + 1;
if (exp_op == ':') {
@@ -6608,29 +6976,37 @@
}
*exp_saveptr = '\0';
} /* else: it's not an expansion op, but bare ${var} */
+#endif /* !__U_BOOT__ */
}
/* Look up the variable in question */
if (isdigit(var[0])) {
/* parse_dollar should have vetted var for us */
+#ifndef __U_BOOT__
int nn = xatoi_positive(var);
+#else /* __U_BOOT__ */
+ int nn = simple_strtoul(var, NULL, 10);
+#endif /* __U_BOOT__ */
if (nn < G.global_argc)
val = G.global_argv[nn];
/* else val remains NULL: $N with too big N */
} else {
switch (var[0]) {
+#ifndef __U_BOOT__
case '$': /* pid */
val = utoa(G.root_pid);
break;
case '!': /* bg pid */
val = G.last_bg_pid ? utoa(G.last_bg_pid) : "";
break;
+#endif /* !__U_BOOT__ */
case '?': /* exitcode */
val = utoa(G.last_exitcode);
break;
case '#': /* argc */
val = utoa(G.global_argc ? G.global_argc-1 : 0);
break;
+#ifndef __U_BOOT__
case '-': { /* active options */
/* Check set_mode() to see what option chars we support */
char *cp;
@@ -6652,11 +7028,13 @@
*cp = '\0';
break;
}
+#endif /* !__U_BOOT__ */
default:
val = get_local_var_value(var);
}
}
+#ifndef __U_BOOT__
/* Handle any expansions */
if (exp_op == 'L') {
reinit_unicode_for_hush();
@@ -6936,6 +7314,7 @@
*exp_saveptr = exp_save;
} /* if (exp_op) */
+#endif /* !__U_BOOT__ */
arg[0] = arg0;
*pp = p;
@@ -7248,6 +7627,7 @@
}
#endif
+#ifndef __U_BOOT__
static char **expand_assignments(char **argv, int count)
{
int i;
@@ -7289,7 +7669,9 @@
install_sighandler(sig, SIG_DFL);
}
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
#if BB_MMU
/* never called */
void re_execute_shell(char ***to_free, const char *s,
@@ -7479,6 +7861,7 @@
}
#endif /* !BB_MMU */
+#endif /* !__U_BOOT__ */
static int run_and_free_list(struct pipe *pi);
@@ -7537,6 +7920,7 @@
}
}
+#ifndef __U_BOOT__
static void parse_and_run_string(const char *s)
{
struct in_str input;
@@ -7546,18 +7930,30 @@
parse_and_run_stream(&input, '\0');
//IF_HUSH_LINENO_VAR(G.parse_lineno = sv;)
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
static void parse_and_run_file(HFILE *fp)
+#else /* __U_BOOT__ */
+void parse_and_run_file(void)
+#endif /* __U_BOOT__ */
{
struct in_str input;
+#ifndef __U_BOOT__
IF_HUSH_LINENO_VAR(unsigned sv = G.parse_lineno;)
IF_HUSH_LINENO_VAR(G.parse_lineno = 1;)
setup_file_in_str(&input, fp);
+#else /* __U_BOOT__ */
+ setup_file_in_str(&input);
+#endif /* __U_BOOT__ */
parse_and_run_stream(&input, ';');
+#ifndef __U_BOOT__
IF_HUSH_LINENO_VAR(G.parse_lineno = sv;)
+#endif /* !__U_BOOT__ */
}
+#ifndef __U_BOOT__
#if ENABLE_HUSH_TICK
static int generate_stream_from_string(const char *s, pid_t *pid_p)
{
@@ -8163,7 +8559,9 @@
return NULL;
}
#endif
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
static void remove_nested_vars(void)
{
struct variable *cur;
@@ -8215,6 +8613,7 @@
remove_nested_vars();
}
+#endif /* __U_BOOT__ */
#if ENABLE_HUSH_FUNCTIONS
static struct function **find_function_slot(const char *name)
@@ -8399,6 +8798,7 @@
#endif /* ENABLE_HUSH_FUNCTIONS */
+#ifndef __U_BOOT__
#if BB_MMU
#define exec_builtin(to_free, x, argv) \
exec_builtin(x, argv)
@@ -8431,8 +8831,10 @@
argv);
#endif
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
static void execvp_or_die(char **argv) NORETURN;
static void execvp_or_die(char **argv)
{
@@ -8514,7 +8916,9 @@
#else
# define dump_cmd_in_x_mode(argv) ((void)0)
#endif
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
#if ENABLE_HUSH_COMMAND
static void if_command_vV_print_and_exit(char opt_vV, char *cmd, const char *explanation)
{
@@ -8540,6 +8944,7 @@
#else
# define if_command_vV_print_and_exit(a,b,c) ((void)0)
#endif
+#endif /* !__U_BOOT__ */
#if BB_MMU
#define pseudo_exec_argv(nommu_save, argv, assignment_cnt, argv_expanded) \
@@ -8548,6 +8953,7 @@
pseudo_exec(command, argv_expanded)
#endif
+#ifndef __U_BOOT__
/* Called after [v]fork() in run_pipe, or from builtin_exec.
* Never returns.
* Don't exit() here. If you don't exec, use _exit instead.
@@ -9186,18 +9592,34 @@
return setup_redirects(command, sqp);
}
+#endif /* !__U_BOOT__ */
+
static NOINLINE int run_pipe(struct pipe *pi)
{
static const char *const null_ptr = NULL;
int cmd_no;
+#ifndef __U_BOOT__
int next_infd;
+#endif /* !__U_BOOT__ */
struct command *command;
char **argv_expanded;
char **argv;
+#ifndef __U_BOOT__
struct squirrel *squirrel = NULL;
+#endif /* !__U_BOOT__ */
int rcode;
+#ifdef __U_BOOT__
+ /*
+ * Set rcode here to avoid returning a garbage value in the middle of
+ * the function.
+ * Also, if an error occurs, rcode value would be changed and last
+ * return will signal the error.
+ */
+ rcode = 0;
+#endif /* __U_BOOT__ */
+
debug_printf_exec("run_pipe start: members:%d\n", pi->num_cmds);
debug_enter();
@@ -9230,11 +9652,14 @@
G.ifs_whitespace = (char*)G.ifs;
}
+#ifndef __U_BOOT__
IF_HUSH_JOB(pi->pgrp = -1;)
pi->stopped_cmds = 0;
+#endif /* !__U_BOOT__ */
command = &pi->cmds[0];
argv_expanded = NULL;
+#ifndef __U_BOOT__
if (pi->num_cmds != 1
|| pi->followup == PIPE_BG
|| command->cmd_type == CMD_SUBSHELL
@@ -9243,6 +9668,7 @@
}
pi->alive_cmds = 1;
+#endif /* !__U_BOOT__ */
debug_printf_exec(": group:%p argv:'%s'\n",
command->group, command->argv ? command->argv[0] : "NONE");
@@ -9274,6 +9700,7 @@
/* { list } */
debug_printf_exec("non-subshell group\n");
rcode = 1; /* exitcode if redir failed */
+#ifndef __U_BOOT__
if (setup_redirects(command, &squirrel) == 0) {
debug_printf_exec(": run_list\n");
//FIXME: we need to pass squirrel down into run_list()
@@ -9286,6 +9713,7 @@
}
restore_redirects(squirrel);
IF_HAS_KEYWORDS(if (pi->pi_inverted) rcode = !rcode;)
+#endif /* !__U_BOOT__ */
debug_leave();
debug_printf_exec("run_pipe: return %d\n", rcode);
return rcode;
@@ -9293,10 +9721,12 @@
argv = command->argv ? command->argv : (char **) &null_ptr;
{
+#ifndef __U_BOOT__
const struct built_in_command *x;
IF_HUSH_FUNCTIONS(const struct function *funcp;)
IF_NOT_HUSH_FUNCTIONS(enum { funcp = 0 };)
struct variable **sv_shadowed;
+#endif /* !__U_BOOT__ */
struct variable *old_vars;
#if ENABLE_HUSH_LINENO_VAR
@@ -9311,8 +9741,10 @@
unsigned i;
G.expand_exitcode = 0;
only_assignments:
+#ifndef __U_BOOT__
rcode = setup_redirects(command, &squirrel);
restore_redirects(squirrel);
+#endif /* !__U_BOOT__ */
/* Set shell variables */
i = 0;
@@ -9335,7 +9767,11 @@
}
#endif
debug_printf_env("set shell var:'%s'->'%s'\n", *argv, p);
+#ifndef __U_BOOT__
if (set_local_var(p, /*flag:*/ 0)) {
+#else /* __U_BOOT__ */
+ if (set_local_var_modern(p, /*flag:*/ 0)) {
+#endif
/* assignment to readonly var / putenv error? */
rcode = 1;
}
@@ -9378,6 +9814,7 @@
}
old_vars = NULL;
+#ifndef __U_BOOT__
sv_shadowed = G.shadowed_vars_pp;
/* Check if argv[0] matches any functions (this goes before bltins) */
@@ -9501,8 +9938,10 @@
debug_leave();
debug_printf_exec("run_pipe return %d\n", rcode);
return rcode;
+#endif /* !__U_BOOT__ */
}
+#ifndef __U_BOOT__
must_fork:
/* NB: argv_expanded may already be created, and that
* might include `cmd` runs! Do not rerun it! We *must*
@@ -9511,9 +9950,11 @@
/* Going to fork a child per each pipe member */
pi->alive_cmds = 0;
next_infd = 0;
+#endif /* !__U_BOOT__ */
cmd_no = 0;
while (cmd_no < pi->num_cmds) {
+#ifndef __U_BOOT__
struct fd_pair pipefds;
#if !BB_MMU
int sv_var_nest_level = G.var_nest_level;
@@ -9522,6 +9963,7 @@
nommu_save.argv = NULL;
nommu_save.argv_from_re_execing = NULL;
#endif
+#endif /* !__U_BOOT__ */
command = &pi->cmds[cmd_no];
cmd_no++;
if (command->argv) {
@@ -9531,6 +9973,7 @@
debug_printf_exec(": pipe member with no argv\n");
}
+#ifndef __U_BOOT__
/* pipes are inserted between pairs of commands */
pipefds.rd = 0;
pipefds.wr = 1;
@@ -9633,17 +10076,30 @@
close(pipefds.wr);
/* Pass read (output) pipe end to next iteration */
next_infd = pipefds.rd;
+#else /* __U_BOOT__ */
+ /* Process the command */
+ rcode = cmd_process(G.do_repeat ? CMD_FLAG_REPEAT : 0,
+ command->argc, command->argv,
+ &(G.flag_repeat), NULL);
+#endif /* __U_BOOT__ */
}
+#ifndef __U_BOOT__
if (!pi->alive_cmds) {
debug_leave();
debug_printf_exec("run_pipe return 1 (all forks failed, no children)\n");
return 1;
}
+#endif /* __U_BOOT__ */
debug_leave();
+#ifndef __U_BOOT__
debug_printf_exec("run_pipe return -1 (%u children started)\n", pi->alive_cmds);
return -1;
+#else /* __U_BOOT__ */
+ debug_printf_exec("run_pipe return %d\n", rcode);
+ return rcode;
+#endif /* __U_BOOT__ */
}
/* NB: called by pseudo_exec, and therefore must not modify any
@@ -9670,8 +10126,10 @@
smallint last_rword; /* ditto */
#endif
+#ifndef __U_BOOT__
debug_printf_exec("run_list start lvl %d\n", G.run_list_level);
debug_enter();
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_LOOPS
/* Check syntax for "for" */
@@ -9719,10 +10177,15 @@
rcode = G.last_exitcode;
/* Go through list of pipes, (maybe) executing them. */
+#ifndef __U_BOOT__
for (; pi; pi = IF_HUSH_LOOPS(rword == RES_DONE ? loop_top : ) pi->next) {
+#else /* __U_BOOT__ */
+ for (; pi; pi = pi->next) {
+#endif /* __U_BOOT__ */
int r;
int sv_errexit_depth;
+#ifndef __U_BOOT__
if (G.flag_SIGINT)
break;
if (G_flag_return_in_progress == 1)
@@ -9732,6 +10195,7 @@
debug_printf_exec(": rword=%d cond_code=%d last_rword=%d\n",
rword, cond_code, last_rword);
+#endif /* !__U_BOOT__ */
sv_errexit_depth = G.errexit_depth;
if (
#if ENABLE_HUSH_IF
@@ -9885,8 +10349,10 @@
* OTOH, in non-interactive shell this is useless
* and only leads to extra job checks */
if (pi->num_cmds == 0) {
+#ifndef __U_BOOT__
if (G_interactive_fd)
goto check_jobs_and_continue;
+#endif /* !__U_BOOT__ */
continue;
}
@@ -9895,20 +10361,33 @@
* after run_pipe to collect any background children,
* even if list execution is to be stopped. */
debug_printf_exec(": run_pipe with %d members\n", pi->num_cmds);
+#ifndef __U_BOOT__
#if ENABLE_HUSH_LOOPS
G.flag_break_continue = 0;
#endif
+#endif /* !__U_BOOT__ */
rcode = r = run_pipe(pi); /* NB: rcode is a smalluint, r is int */
+#ifdef __U_BOOT__
+ if (r == -2) {
+ /* -2 indicates exit was called, so we need to quit now. */
+ G.last_exitcode = rcode;
+
+ break;
+ }
+#endif
if (r != -1) {
/* We ran a builtin, function, or group.
* rcode is already known
* and we don't need to wait for anything. */
debug_printf_exec(": builtin/func exitcode %d\n", rcode);
G.last_exitcode = rcode;
+#ifndef __U_BOOT__
check_and_run_traps();
+#endif /* !__U_BOOT__ */
#if ENABLE_HUSH_TRAP && ENABLE_HUSH_FUNCTIONS
rcode = G.last_exitcode; /* "return" in trap can change it, read back */
#endif
+#ifndef __U_BOOT__
#if ENABLE_HUSH_LOOPS
/* Was it "break" or "continue"? */
if (G.flag_break_continue) {
@@ -9934,6 +10413,7 @@
checkjobs(NULL, 0 /*(no pid to wait for)*/);
break;
}
+
} else if (pi->followup == PIPE_BG) {
/* What does bash do with attempts to background builtins? */
/* even bash 3.2 doesn't do that well with nested bg:
@@ -9969,13 +10449,18 @@
rcode = G.last_exitcode; /* "return" in trap can change it, read back */
#endif
}
+#endif /* !__U_BOOT__ */
+#ifndef __U_BOOT__
/* Handle "set -e" */
if (rcode != 0 && G.o_opt[OPT_O_ERREXIT]) {
debug_printf_exec("ERREXIT:1 errexit_depth:%d\n", G.errexit_depth);
if (G.errexit_depth == 0)
hush_exit(rcode);
}
+#else /* __U_BOOT__ */
+ } /* if (r != -1) */
+#endif /* __U_BOOT__ */
G.errexit_depth = sv_errexit_depth;
/* Analyze how result affects subsequent commands */
@@ -9983,8 +10468,10 @@
if (rword == RES_IF || rword == RES_ELIF)
cond_code = rcode;
#endif
+#ifndef __U_BOOT__
check_jobs_and_continue:
checkjobs(NULL, 0 /*(no pid to wait for)*/);
+#endif /* !__U_BOOT__ */
dont_check_jobs_but_continue: ;
#if ENABLE_HUSH_LOOPS
/* Beware of "while false; true; do ..."! */
@@ -10021,8 +10508,10 @@
#if ENABLE_HUSH_CASE
free(case_word);
#endif
+#ifndef __U_BOOT__
debug_leave();
debug_printf_exec("run_list lvl %d return %d\n", G.run_list_level + 1, rcode);
+#endif /* !__U_BOOT__ */
return rcode;
}
@@ -10031,10 +10520,14 @@
{
int rcode = 0;
debug_printf_exec("run_and_free_list entered\n");
+#ifndef __U_BOOT__
if (!G.o_opt[OPT_O_NOEXEC]) {
+#endif /* !__U_BOOT__ */
debug_printf_exec(": run_list: 1st pipe with %d cmds\n", pi->num_cmds);
rcode = run_list(pi);
+#ifndef __U_BOOT__
}
+#endif /* !__U_BOOT__ */
/* free_pipe_list has the side effect of clearing memory.
* In the long run that function can be merged with run_list,
* but doing that now would hobble the debugging effort. */
@@ -10044,6 +10537,7 @@
}
+#ifndef __U_BOOT__
static void install_sighandlers(unsigned mask)
{
sighandler_t old_handler;
@@ -10460,6 +10954,7 @@
}
}
+#ifndef __U_BOOT__
/* -c takes effect *after* -l */
if (G.opt_c) {
/* Possibilities:
@@ -10536,6 +11031,7 @@
/* "implicit" -s: bare interactive hush shows 's' in $- */
G.opt_s = 1;
+#endif /* __U_BOOT__ */
/* Up to here, shell was non-interactive. Now it may become one.
* NB: don't forget to (re)run install_special_sighandlers() as needed.
*/
@@ -10681,6 +11177,7 @@
}
+
/*
* Built-ins
*/
@@ -12160,3 +12657,4 @@
return l;
}
#endif
+#endif /* !__U_BOOT__ */