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/* Definitions for boot script parser for Mach. */
/* Written by Shantanu Goel (goel@cs.columbia.edu). */
/* Error codes returned by boot_script_parse_line()
and boot_script_exec_cmd(). */
#define BOOT_SCRIPT_NOMEM 1
#define BOOT_SCRIPT_SYNTAX_ERROR 2
#define BOOT_SCRIPT_INVALID_ASG 3
#define BOOT_SCRIPT_MACH_ERROR 4
#define BOOT_SCRIPT_UNDEF_SYM 5
#define BOOT_SCRIPT_EXEC_ERROR 6
#define BOOT_SCRIPT_INVALID_SYM 7
#define BOOT_SCRIPT_BAD_TYPE 8
/* Legal values for argument `type' to function
boot_script_set_variable(). */
#define VAL_STR 1 /* string */
#define VAL_PORT 2 /* port */
/* The user must define this variable. The task port of the program. */
extern mach_port_t boot_script_task_port;
/* The user must define this function. Allocate SIZE bytes of memory
and return a pointer to it. */
void *boot_script_malloc (int size);
/* The user must define this function. Free SIZE bytes of memory
named by PTR that was previously allocated by boot_script_malloc(). */
void boot_script_free (void *ptr, int size);
/* The user must define this function. Create a new task and
return a send right to it presumably using task_create().
Return 0 on error. */
mach_port_t boot_script_task_create (void);
/* The user must define this function. Terminate the task whose
send right is TASK presumably using task_terminate(). */
void boot_script_task_terminate (mach_port_t task);
/* The user must define this function. Suspend TASK presumably
using task_suspend(). */
void boot_script_task_suspend (mach_port_t task);
/* The user must define this function. Resume TASK presumably
using task_resume(). Return 0 on success, non-zero otherwise. */
int boot_script_task_resume (mach_port_t task);
/* The user must define this function. Deallocate a send right to PORT
in the TASK presumably using mach_port_deallocate(). */
void boot_script_port_deallocate (mach_port_t task, mach_port_t port);
/* The user must define this function. Insert the specified RIGHT to
the PORT in the current task into TASK with NAME, presumably using
mach_port_insert_right(). RIGHT can take any value allowed by
mach_port_insert_right(). Return 0 for success, non-zero otherwise. */
int boot_script_port_insert_right (mach_port_t task,
mach_port_t name, mach_port_t port,
mach_msg_type_name_t right);
/* The user must define this function. Set the bootstrap port for TASK. */
void boot_script_set_bootstrap_port (mach_port_t task, mach_port_t port);
/* The user must define this function. Load the image of the
executable specified by PATH in TASK. Create a thread
in TASK and point it at the executable's entry point. Initialize
TASK's stack with argument vector ARGV of length ARGC whose
strings are STRINGS. STRINGS has length STRINGLEN.
Return 0 for success, non-zero otherwise. */
int boot_script_exec_cmd (mach_port_t task, char *path, int argc,
char **argv, char *strings, int stringlen);
/* Parse the command line LINE. This causes the command line to be
converted into an internal format. Returns 0 for success, non-zero
otherwise.
NOTE: The parser writes into the line so it must not be a string constant.
It is also the responsibility of the caller not to deallocate the line
across calls to the parser. */
int boot_script_parse_line (char *cmdline);
/* Execute the command lines prevously parsed.
Returns 0 for success, non-zero otherwise. */
int boot_script_exec (void);
/* Create an entry in the symbol table for variable NAME,
whose type is TYPE and value is VAL. Returns 0 on success,
non-zero otherwise. */
int boot_script_set_variable (const char *name, int type, int val);
/* Returns a string describing the error ERR. */
char *boot_script_error_string (int err);
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