diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/hush.c | 17 | ||||
| -rw-r--r-- | shell/hush_test/hush-misc/builtin1.right | 2 | ||||
| -rwxr-xr-x | shell/hush_test/hush-misc/builtin1.tests | 6 |
3 files changed, 24 insertions, 1 deletions
diff --git a/shell/hush.c b/shell/hush.c index 5b2f188..5af939d 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -434,13 +434,17 @@ struct globals { struct pipe *toplevel_list; smallint ctrl_z_flag; #endif +#if ENABLE_HUSH_LOOPS smallint flag_break_continue; +#endif smallint fake_mode; /* these three support $?, $#, and $1 */ smalluint last_return_code; char **global_argv; int global_argc; +#if ENABLE_HUSH_LOOPS unsigned depth_break_continue; +#endif pid_t last_bg_pid; const char *ifs; const char *cwd; @@ -722,8 +726,10 @@ static int builtin_shift(char **argv); static int builtin_source(char **argv); static int builtin_umask(char **argv); static int builtin_unset(char **argv); +#if ENABLE_HUSH_LOOPS static int builtin_break(char **argv); static int builtin_continue(char **argv); +#endif //static int builtin_not_written(char **argv); /* Table of built-in functions. They can be forked or not, depending on @@ -753,9 +759,13 @@ static const struct built_in_command bltins[] = { #if ENABLE_HUSH_JOB BLTIN("bg" , builtin_fg_bg, "Resume a job in the background"), #endif +#if ENABLE_HUSH_LOOPS BLTIN("break" , builtin_break, "Exit from a loop"), +#endif BLTIN("cd" , builtin_cd, "Change directory"), +#if ENABLE_HUSH_LOOPS BLTIN("continue", builtin_continue, "Start new loop iteration"), +#endif BLTIN("echo" , builtin_echo, "Write to stdout"), BLTIN("eval" , builtin_eval, "Construct and run shell command"), BLTIN("exec" , builtin_exec, "Execute command, don't return to shell"), @@ -2246,13 +2256,15 @@ static int run_list(struct pipe *pi) debug_printf_exec(": run_pipe with %d members\n", pi->num_progs); { int r; +#if ENABLE_HUSH_LOOPS flag_break_continue = 0; +#endif rcode = r = run_pipe(pi); /* NB: rcode is a smallint */ if (r != -1) { /* we only ran a builtin: rcode is already known * and we don't need to wait for anything. */ +#if ENABLE_HUSH_LOOPS /* was it "break" or "continue"? */ - if (flag_break_continue) { smallint fbc = flag_break_continue; /* we might fall into outer *loop*, @@ -2271,6 +2283,7 @@ static int run_list(struct pipe *pi) bb_error_msg("break/continue: only meaningful in a loop"); /* bash compat: exit code is still 0 */ } +#endif } 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: @@ -4534,6 +4547,7 @@ static int builtin_unset(char **argv) return EXIT_SUCCESS; } +#if ENABLE_HUSH_LOOPS static int builtin_break(char **argv) { flag_break_continue++; /* BC_BREAK = 1 */ @@ -4554,3 +4568,4 @@ static int builtin_continue(char **argv) flag_break_continue++; /* BC_CONTINUE = 2 = 1+1 */ return builtin_break(argv); } +#endif diff --git a/shell/hush_test/hush-misc/builtin1.right b/shell/hush_test/hush-misc/builtin1.right new file mode 100644 index 0000000..2e55ecb --- /dev/null +++ b/shell/hush_test/hush-misc/builtin1.right @@ -0,0 +1,2 @@ +VARIABLE=export +OK:0 diff --git a/shell/hush_test/hush-misc/builtin1.tests b/shell/hush_test/hush-misc/builtin1.tests new file mode 100755 index 0000000..1a2941f --- /dev/null +++ b/shell/hush_test/hush-misc/builtin1.tests @@ -0,0 +1,6 @@ +# builtins, unlike keywords like "while", can be constructed +# with substitutions +VARIABLE=export +$VARIABLE VARIABLE +env | grep ^VARIABLE +echo OK:$? |