main.c File Reference

Loads and runs programs from VFS. More...

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <bool.h>
#include <fcntl.h>
#include <sys/types.h>
#include <ipc/services.h>
#include <ipc/loader.h>
#include <ipc/ns.h>
#include <macros.h>
#include <loader/pcb.h>
#include <entry_point.h>
#include <errno.h>
#include <async.h>
#include <str.h>
#include <as.h>
#include <elf.h>
#include <elf_load.h>

Go to the source code of this file.

Defines
#define	DPRINTF()
Functions
static void	ldr_connection (ipc_callid_t iid, ipc_call_t *icall)
	Handle loader connection.
static void	ldr_get_taskid (ipc_callid_t rid, ipc_call_t *request)
static int	ldr_load (ipc_callid_t rid, ipc_call_t *request)
	Load the previously selected program.
static void	ldr_run (ipc_callid_t rid, ipc_call_t *request)
	Run the previously loaded program.
static void	ldr_set_args (ipc_callid_t rid, ipc_call_t *request)
	Receive a call setting arguments of the program to execute.
static void	ldr_set_cwd (ipc_callid_t rid, ipc_call_t *request)
	Receive a call setting the current working directory.
static void	ldr_set_files (ipc_callid_t rid, ipc_call_t *request)
	Receive a call setting preset files of the program to execute.
static void	ldr_set_pathname (ipc_callid_t rid, ipc_call_t *request)
	Receive a call setting pathname of the program to execute.
int	main (int argc, char *argv[])
	Main entry point.
Variables
static char *	arg_buf = NULL
	Buffer holding all arguments.
static int	argc = 0
	Number of arguments.
static char **	argv = NULL
	Argument vector.
static bool	connected = false
	Used to limit number of connections to one.
static char *	cwd = NULL
	Current working directory.
static fdi_node_t *	fil_buf = NULL
	Buffer holding all preset files.
static int	filc = 0
	Number of preset files.
static fdi_node_t **	filv = NULL
	Preset files vector.
static char *	pathname = NULL
	Pathname of the file that will be loaded.
static pcb_t	pcb
	The Program control block.
static elf_info_t	prog_info

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Detailed Description

Loads and runs programs from VFS.

The program loader is a special init binary. Its image is used to create a new task upon a task_spawn syscall. The syscall returns the id of a phone connected to the newly created task.

The caller uses this phone to send the pathname and various other information to the loader. This is normally done by the C library and completely hidden from applications.

Definition in file main.c.

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