diff options
| -rw-r--r-- | shell/hush.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/shell/hush.c b/shell/hush.c index cdb0b74..f3be785 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -332,7 +332,6 @@ static void __syntax(int line) /* Index of subroutines: */ /* function prototypes for builtins */ static int builtin_cd(char **argv); -static int builtin_env(char **argv); static int builtin_eval(char **argv); static int builtin_exec(char **argv); static int builtin_exit(char **argv); @@ -432,7 +431,6 @@ static const struct built_in_command bltins[] = { { "break", "Exit for, while or until loop", builtin_not_written }, { "cd", "Change working directory", builtin_cd }, { "continue", "Continue for, while or until loop", builtin_not_written }, - { "env", "Print all environment variables", builtin_env }, { "eval", "Construct and run shell command", builtin_eval }, { "exec", "Exec command, replacing this shell with the exec'd process", builtin_exec }, @@ -643,19 +641,6 @@ static int builtin_cd(char **argv) return EXIT_SUCCESS; } -/* built-in 'env' handler */ -static int builtin_env(char **argv ATTRIBUTE_UNUSED) -{ -/* TODO: call env applet's code instead */ - char **e = environ; - if (e == NULL) - return EXIT_FAILURE; - while (*e) { - puts(*e++); - } - return EXIT_SUCCESS; -} - /* built-in 'exec' handler */ static int builtin_exec(char **argv) { @@ -670,13 +655,15 @@ static int builtin_exit(char **argv) { // TODO: bash does it ONLY on top-level sh exit (+interacive only?) //puts("exit"); /* bash does it */ +// TODO: warn if we have background jobs: "There are stopped jobs" +// On second consecutive 'exit', exit anyway. if (argv[1] == NULL) hush_exit(last_return_code); /* mimic bash: exit 123abc == exit 255 + error msg */ xfunc_error_retval = 255; /* bash: exit -2 == exit 254, no error msg */ - hush_exit(xatoi(argv[1])); + hush_exit(xatoi(argv[1]) & 0xff); } /* built-in 'export VAR=value' handler */ @@ -686,7 +673,15 @@ static int builtin_export(char **argv) char *name = argv[1]; if (name == NULL) { - return builtin_env(argv); + // TODO: + // ash emits: export VAR='VAL' + // bash: declare -x VAR="VAL" + // (both also escape as needed (quotes, $, etc)) + char **e = environ; + if (e) + while (*e) + puts(*e++); + return EXIT_SUCCESS; } name = strdup(name); @@ -1321,6 +1316,8 @@ static void pseudo_exec_argv(char **argv) static void pseudo_exec(struct child_prog *child) { +// FIXME: buggy wrt NOMMU! Must not modify any global data +// until it does exec/_exit, but currently it does. int rcode; if (child->argv) { @@ -1852,6 +1849,8 @@ static int run_pipe_real(struct pipe *pi) return -1; } +// NB: called by pseudo_exec, and therefore must not modify any +// global data until exec/_exit (we can be a child after vfork!) static int run_list_real(struct pipe *pi) { char *save_name = NULL; |