diff options
| -rw-r--r-- | shell/hush.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/shell/hush.c b/shell/hush.c index 14f8f24..7640bd6 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -532,6 +532,7 @@ struct globals { smallint flag_return_in_progress; #endif smallint fake_mode; + smallint x_mode; smallint exiting; /* used to prevent EXIT trap recursion */ /* These four support $?, $#, and $1 */ smalluint last_exitcode; @@ -3692,6 +3693,31 @@ static void execvp_or_die(char **argv) _exit(127); /* bash compat */ } +static void dump_cmd_in_x_mode(char **argv) +{ + if (G.x_mode && argv) { + /* We want to output the line in one write op */ + char *buf, *p; + int len; + int n; + + len = 3; + n = 0; + while (argv[n]) + len += strlen(argv[n++]) + 1; + buf = xmalloc(len); + buf[0] = '+'; + p = buf + 1; + n = 0; + while (argv[n]) + p += sprintf(p, " %s", argv[n++]); + *p++ = '\n'; + *p = '\0'; + fputs(buf, stderr); + free(buf); + } +} + #if BB_MMU #define pseudo_exec_argv(nommu_save, argv, assignment_cnt, argv_expanded) \ pseudo_exec_argv(argv, assignment_cnt, argv_expanded) @@ -3714,6 +3740,7 @@ static NOINLINE void pseudo_exec_argv(nommu_save_t *nommu_save, char **new_env; new_env = expand_assignments(argv, assignment_cnt); + dump_cmd_in_x_mode(new_env); if (!argv[assignment_cnt]) { /* Case when we are here: ... | var=val | ... @@ -3742,6 +3769,7 @@ static NOINLINE void pseudo_exec_argv(nommu_save_t *nommu_save, nommu_save->argv = argv; #endif } + dump_cmd_in_x_mode(argv); #if ENABLE_FEATURE_SH_STANDALONE || BB_MMU if (strchr(argv[0], '/') != NULL) @@ -4239,13 +4267,19 @@ static NOINLINE int run_pipe(struct pipe *pi) rcode = setup_redirects(command, squirrel); restore_redirects(squirrel); /* Set shell variables */ + if (G.x_mode) + bb_putchar_stderr('+'); while (*argv) { p = expand_string_to_string(*argv); + if (G.x_mode) + fprintf(stderr, " %s", p); debug_printf_exec("set shell var:'%s'->'%s'\n", *argv, p); set_local_var(p, /*exp:*/ 0, /*lvl:*/ 0, /*ro:*/ 0); argv++; } + if (G.x_mode) + bb_putchar_stderr('\n'); /* Redirect error sets $? to 1. Otherwise, * if evaluating assignment value set $?, retain it. * Try "false; q=`exit 2`; echo $?" - should print 2: */ @@ -4305,6 +4339,8 @@ static NOINLINE int run_pipe(struct pipe *pi) rcode = setup_redirects(command, squirrel); if (rcode == 0) { new_env = expand_assignments(argv, command->assignment_cnt); + dump_cmd_in_x_mode(new_env); + dump_cmd_in_x_mode(argv_expanded); old_vars = set_vars_and_save_old(new_env); if (!funcp) { debug_printf_exec(": builtin '%s' '%s'...\n", @@ -4346,6 +4382,8 @@ static NOINLINE int run_pipe(struct pipe *pi) rcode = setup_redirects(command, squirrel); if (rcode == 0) { new_env = expand_assignments(argv, command->assignment_cnt); + dump_cmd_in_x_mode(new_env); + dump_cmd_in_x_mode(argv_expanded); old_vars = set_vars_and_save_old(new_env); debug_printf_exec(": run_nofork_applet '%s' '%s'...\n", argv_expanded[0], argv_expanded[1]); @@ -6932,7 +6970,7 @@ static int set_mode(const char cstate, const char mode) int state = (cstate == '-' ? 1 : 0); switch (mode) { case 'n': G.fake_mode = state; break; - case 'x': /*G.debug_mode = state;*/ break; + case 'x': G.x_mode = state; break; default: return EXIT_FAILURE; } return EXIT_SUCCESS; |