diff options
| -rw-r--r-- | shell/hush.c | 113 |
1 files changed, 91 insertions, 22 deletions
diff --git a/shell/hush.c b/shell/hush.c index ac34805..0313cfd 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2329,6 +2329,16 @@ static void pseudo_exec_argv(nommu_save_t *nommu_save, _exit(EXIT_FAILURE); } +static void re_execute_shell(const char *s) NORETURN; +static void re_execute_shell(const char *s) +{ +//TODO: pass non-exported variables, traps, and functions + debug_printf_exec("re_execute_shell pid:%d cmd:'%s'", getpid(), s); + execl(bb_busybox_exec_path, "hush", "-c", s, NULL); +//TODO: fallback for init=/bin/hush? + _exit(127); +} + static int run_list(struct pipe *pi); /* Called after [v]fork() in run_pipe() @@ -2360,8 +2370,7 @@ static void pseudo_exec(nommu_save_t *nommu_save, * since this process is about to exit */ _exit(rcode); #else - bb_error_msg_and_die("NOMMU TODO: re-exec '%s'", - command->group_as_string); + re_execute_shell(command->group_as_string); #endif } @@ -3831,9 +3840,7 @@ static FILE *generate_stream_from_string(const char *s) * huge=`cat TESTFILE` # was blocking here forever * echo OK */ -//TODO: pass non-exported variables, traps, and functions - execl(bb_busybox_exec_path, "hush", "-c", s, NULL); - _exit(127); + re_execute_shell(s); #endif } @@ -4071,7 +4078,13 @@ static void add_till_closing_paren(o_string *dest, struct in_str *input, bool db #endif /* ENABLE_HUSH_TICK || ENABLE_SH_MATH_SUPPORT */ /* Return code: 0 for OK, 1 for syntax error */ -static int handle_dollar(o_string *dest, struct in_str *input) +#if BB_MMU +#define handle_dollar(ctx, dest, input) \ + handle_dollar(dest, input) +#endif +static int handle_dollar(struct parse_context *ctx, + o_string *dest, + struct in_str *input) { int expansion; int ch = i_peek(input); /* first character after the $ */ @@ -4079,7 +4092,10 @@ static int handle_dollar(o_string *dest, struct in_str *input) debug_printf_parse("handle_dollar entered: ch='%c'\n", ch); if (isalpha(ch)) { - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif make_var: o_addchr(dest, SPECIAL_VAR_SYMBOL); while (1) { @@ -4089,12 +4105,18 @@ static int handle_dollar(o_string *dest, struct in_str *input) ch = i_peek(input); if (!isalnum(ch) && ch != '_') break; - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif } o_addchr(dest, SPECIAL_VAR_SYMBOL); } else if (isdigit(ch)) { make_one_char_var: - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif o_addchr(dest, SPECIAL_VAR_SYMBOL); debug_printf_parse(": '%c'\n", ch); o_addchr(dest, ch | quote_mask); @@ -4111,13 +4133,19 @@ static int handle_dollar(o_string *dest, struct in_str *input) bool first_char, all_digits; o_addchr(dest, SPECIAL_VAR_SYMBOL); - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif /* XXX maybe someone will try to escape the '}' */ expansion = 0; first_char = true; all_digits = false; while (1) { ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif if (ch == '}') break; @@ -4183,10 +4211,16 @@ static int handle_dollar(o_string *dest, struct in_str *input) break; } case '(': { - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif #if ENABLE_SH_MATH_SUPPORT if (i_peek(input) == '(') { - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif o_addchr(dest, SPECIAL_VAR_SYMBOL); o_addchr(dest, /*quote_mask |*/ '+'); add_till_closing_paren(dest, input, true); @@ -4205,7 +4239,10 @@ static int handle_dollar(o_string *dest, struct in_str *input) break; } case '_': - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx->as_string, ch); +#endif ch = i_peek(input); if (isalnum(ch)) { /* it's $_name or $_123 */ ch = '_'; @@ -4281,7 +4318,7 @@ static int parse_stream_dquoted(struct parse_context *ctx, goto again; } if (ch == '$') { - if (handle_dollar(dest, input) != 0) { + if (handle_dollar(ctx, dest, input) != 0) { debug_printf_parse("parse_stream_dquoted return 1: " "handle_dollar returned non-0\n"); return 1; @@ -4477,7 +4514,12 @@ static struct pipe *parse_stream(char **pstring, if (ch == EOF || ch == '\n') break; i_getch(input); + /* note: we do not add it to &ctx.as_string */ } +#if !BB_MMU +//TODO: go back one char? + o_addchr(&ctx.as_string, '\n'); +#endif } else { o_addQchr(&dest, ch); } @@ -4488,10 +4530,15 @@ static struct pipe *parse_stream(char **pstring, goto parse_error; } o_addchr(&dest, '\\'); - o_addchr(&dest, i_getch(input)); + ch = i_getch(input); + o_addchr(&dest, ch); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif break; case '$': - if (handle_dollar(&dest, input) != 0) { +//NOMMU TODO! + if (handle_dollar(&ctx, &dest, input) != 0) { debug_printf_parse("parse_stream parse error: " "handle_dollar returned non-0\n"); goto parse_error; @@ -4505,6 +4552,9 @@ static struct pipe *parse_stream(char **pstring, syntax("unterminated '"); goto parse_error; } +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif if (ch == '\'') break; if (dest.o_assignment == NOT_ASSIGNMENT) @@ -4538,7 +4588,10 @@ static struct pipe *parse_stream(char **pstring, redir_style = REDIRECT_OVERWRITE; if (next == '>') { redir_style = REDIRECT_APPEND; - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif } #if 0 else if (next == '(') { @@ -4556,10 +4609,16 @@ static struct pipe *parse_stream(char **pstring, redir_style = REDIRECT_INPUT; if (next == '<') { redir_style = REDIRECT_HEREIS; - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif } else if (next == '>') { redir_style = REDIRECT_IO; - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif } #if 0 else if (next == '(') { @@ -4584,7 +4643,10 @@ static struct pipe *parse_stream(char **pstring, ch = i_peek(input); if (ch != ';') break; - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif if (ctx.ctx_res_w == RES_CASEI) { ctx.ctx_dsemicolon = 1; ctx.ctx_res_w = RES_MATCH; @@ -4602,7 +4664,10 @@ static struct pipe *parse_stream(char **pstring, goto parse_error; } if (next == '&') { - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif done_pipe(&ctx, PIPE_AND); } else { done_pipe(&ctx, PIPE_BG); @@ -4617,7 +4682,10 @@ static struct pipe *parse_stream(char **pstring, break; /* we are in case's "word | word)" */ #endif if (next == '|') { /* || */ - i_getch(input); + ch = i_getch(input); +#if !BB_MMU + o_addchr(&ctx.as_string, ch); +#endif done_pipe(&ctx, PIPE_OR); } else { /* we could pick up a file descriptor choice here @@ -4647,6 +4715,7 @@ static struct pipe *parse_stream(char **pstring, ) { bb_error_msg("seems like a function definition"); i_getch(input); +//if !BB_MMU o_addchr(&ctx.as_string... do { //TODO: do it properly. ch = i_getch(input); |