WebSVN – HelenOS – Diff – /branches/sparc/uspace/srv/loader/main.c


/*
 * Copyright (c) 2008 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup loader
 * @brief   Loads and runs programs from VFS.
 * @{
 */
/**
 * @file
 * @brief   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 @c 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.
 */
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <bool.h>
#include <fcntl.h>
#include <sys/types.h>
#include <ipc/ipc.h>
#include <ipc/loader.h>
#include <loader/pcb.h>
#include <errno.h>
#include <async.h>
#include <as.h>
 
#include <elf.h>
#include <elf_load.h>
 
/**
 * Bias used for loading the dynamic linker. This will be soon replaced
 * by automatic placement.
 */
#define RTLD_BIAS 0x80000
 
/** Pathname of the file that will be loaded */
static char *pathname = NULL;
 
/** The Program control block */
static pcb_t pcb;
 
/** Number of arguments */
static int argc = 0;
/** Argument vector */
static char **argv = NULL;
/** Buffer holding all arguments */
static char *arg_buf = NULL;
 
static elf_info_t prog_info;
static elf_info_t interp_info;
 
static bool is_dyn_linked;
 
 
static void loader_get_taskid(ipc_callid_t rid, ipc_call_t *request)
{
    ipc_callid_t callid;
    task_id_t task_id;
    size_t len;
 
    task_id = task_get_id();
 
    if (!ipc_data_read_receive(&callid, &len)) {
        ipc_answer_0(callid, EINVAL);
        ipc_answer_0(rid, EINVAL);
        return;
    }
 
    if (len > sizeof(task_id)) len = sizeof(task_id);
 
    ipc_data_read_finalize(callid, &task_id, len);
    ipc_answer_0(rid, EOK);
}
 
 
/** Receive a call setting pathname of the program to execute.
 *
 * @param rid
 * @param request
 */
static void loader_set_pathname(ipc_callid_t rid, ipc_call_t *request)
{
    ipc_callid_t callid;
    size_t len;
    char *name_buf;
 
    if (!ipc_data_write_receive(&callid, &len)) {
        ipc_answer_0(callid, EINVAL);
        ipc_answer_0(rid, EINVAL);
        return;
    }
 
    name_buf = malloc(len + 1);
    if (!name_buf) {
        ipc_answer_0(callid, ENOMEM);
        ipc_answer_0(rid, ENOMEM);
        return;
    }
 
    ipc_data_write_finalize(callid, name_buf, len);
    ipc_answer_0(rid, EOK);
 
    if (pathname != NULL) {
        free(pathname);
        pathname = NULL;
    }
 
    name_buf[len] = '\0';
    pathname = name_buf;
}
 
/** Receive a call setting arguments of the program to execute.
 *
 * @param rid
 * @param request
 */
static void loader_set_args(ipc_callid_t rid, ipc_call_t *request)
{
    ipc_callid_t callid;
    size_t buf_len, arg_len;
    char *p;
    int n;
 
    if (!ipc_data_write_receive(&callid, &buf_len)) {
        ipc_answer_0(callid, EINVAL);
        ipc_answer_0(rid, EINVAL);
        return;
    }
 
    if (arg_buf != NULL) {
        free(arg_buf);
        arg_buf = NULL;
    }
 
    if (argv != NULL) {
        free(argv);
        argv = NULL;
    }
 
    arg_buf = malloc(buf_len + 1);
    if (!arg_buf) {
        ipc_answer_0(callid, ENOMEM);
        ipc_answer_0(rid, ENOMEM);
        return;
    }
 
    ipc_data_write_finalize(callid, arg_buf, buf_len);
    ipc_answer_0(rid, EOK);
 
    arg_buf[buf_len] = '\0';
 
    /*
     * Count number of arguments
     */
    p = arg_buf;
    n = 0;
    while (p < arg_buf + buf_len) {
        arg_len = strlen(p);
        p = p + arg_len + 1;
        ++n;
    }
 
    /* Allocate argv */
    argv = malloc((n + 1) * sizeof(char *));
 
    if (argv == NULL) {
        free(arg_buf);
        ipc_answer_0(callid, ENOMEM);
        ipc_answer_0(rid, ENOMEM);
        return;
    }
 
    /*
     * Fill argv with argument pointers
     */
    p = arg_buf;
    n = 0;
    while (p < arg_buf + buf_len) {
        argv[n] = p;
 
        arg_len = strlen(p);
        p = p + arg_len + 1;
        ++n;
    }
 
    argc = n;
    argv[n] = NULL;
}
 
/** Load the previously selected program.
 *
 * @param rid
 * @param request
 * @return 0 on success, !0 on error.
 */
static int loader_load(ipc_callid_t rid, ipc_call_t *request)
{
    int rc;
 
//  printf("Load program '%s'\n", pathname);
 
    rc = elf_load_file(pathname, 0, &prog_info);
    if (rc < 0) {
        printf("failed to load program\n");
        ipc_answer_0(rid, EINVAL);
        return 1;
    }
 
//  printf("Create PCB\n");
    elf_create_pcb(&prog_info, &pcb);
 
    pcb.argc = argc;
    pcb.argv = argv;
 
    if (prog_info.interp == NULL) {
        /* Statically linked program */
//      printf("Run statically linked program\n");
//      printf("entry point: 0x%lx\n", prog_info.entry);
        is_dyn_linked = false;
        ipc_answer_0(rid, EOK);
        return 0;
    }
 
    printf("Load dynamic linker '%s'\n", prog_info.interp);
    rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info);
    if (rc < 0) {
        printf("failed to load dynamic linker\n");
        ipc_answer_0(rid, EINVAL);
        return 1;
    }
 
    /*
     * Provide dynamic linker with some useful data
     */
    pcb.rtld_dynamic = interp_info.dynamic;
    pcb.rtld_bias = RTLD_BIAS;
 
    is_dyn_linked = true;
    ipc_answer_0(rid, EOK);
 
    return 0;
}
 
 
/** Run the previously loaded program.
 *
 * @param rid
 * @param request
 * @return 0 on success, !0 on error.
 */
static void loader_run(ipc_callid_t rid, ipc_call_t *request)
{
    if (is_dyn_linked == true) {
        /* Dynamically linked program */
        printf("run dynamic linker\n");
        printf("entry point: 0x%lx\n", interp_info.entry);
        close_console();
 
        ipc_answer_0(rid, EOK);
        elf_run(&interp_info, &pcb);
 
    } else {
        /* Statically linked program */
        close_console();
        ipc_answer_0(rid, EOK);
        elf_run(&prog_info, &pcb);
    }
 
    /* Not reached */
}
 
/** Handle loader connection.
 *
 * Receive and carry out commands (of which the last one should be
 * to execute the loaded program).
 */
static void loader_connection(ipc_callid_t iid, ipc_call_t *icall)
{
    ipc_callid_t callid;
    ipc_call_t call;
    int retval;
 
    /* Ignore parameters, the connection is already open */
    (void)iid; (void)icall;
 
    while (1) {
        callid = async_get_call(&call);
 
        switch (IPC_GET_METHOD(call)) {
        case IPC_M_PHONE_HUNGUP:
            exit(0);
        case LOADER_GET_TASKID:
            loader_get_taskid(callid, &call);
            continue;
        case LOADER_SET_PATHNAME:
            loader_set_pathname(callid, &call);
            continue;
        case LOADER_SET_ARGS:
            loader_set_args(callid, &call);
            continue;
        case LOADER_LOAD:
            loader_load(callid, &call);
            continue;
        case LOADER_RUN:
            loader_run(callid, &call);
            /* Not reached */
        default:
            retval = ENOENT;
            break;
        }
        if ((callid & IPC_CALLID_NOTIFICATION) == 0 &&
            IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP) {
            printf("responding EINVAL to method %d\n",
                IPC_GET_METHOD(call));
            ipc_answer_0(callid, EINVAL);
        }
    }
}
 
/** Program loader main function.
 */
int main(int argc, char *argv[])
{
    ipc_callid_t callid;
    ipc_call_t call;
    ipcarg_t phone_hash;
 
    /* The first call only communicates the incoming phone hash */
    callid = ipc_wait_for_call(&call);
 
    if (IPC_GET_METHOD(call) != LOADER_HELLO) {
        if (IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP)
            ipc_answer_0(callid, EINVAL);
        return 1;
    }
 
    ipc_answer_0(callid, EOK);
    phone_hash = call.in_phone_hash;
 
    /*
     * Up until now async must not be used as it couldn't
     * handle incoming requests. (Which means e.g. printf()
     * cannot be used)
     */
    async_new_connection(phone_hash, 0, NULL, loader_connection);
    async_manager();
 
    /* not reached */
    return 0;
}
 
/** @}
 */
 

Rev 3492	Rev 3593
1	/*	1	/*
2	* Copyright (c) 2008 Jiri Svoboda	2	* Copyright (c) 2008 Jiri Svoboda
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup loader	29	/** @addtogroup loader
30	* @brief Loads and runs programs from VFS.	30	* @brief Loads and runs programs from VFS.
31	* @{	31	* @{
32	*/	32	*/
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Loads and runs programs from VFS.	35	* @brief Loads and runs programs from VFS.
36	*	36	*
37	* The program loader is a special init binary. Its image is used	37	* The program loader is a special init binary. Its image is used
38	* to create a new task upon a @c task_spawn syscall. The syscall	38	* to create a new task upon a @c task_spawn syscall. The syscall
39	* returns the id of a phone connected to the newly created task.	39	* returns the id of a phone connected to the newly created task.
40	*	40	*
41	* The caller uses this phone to send the pathname and various other	41	* The caller uses this phone to send the pathname and various other
42	* information to the loader. This is normally done by the C library	42	* information to the loader. This is normally done by the C library
43	* and completely hidden from applications.	43	* and completely hidden from applications.
44	*/	44	*/
45		45
46	#include <stdio.h>	46	#include <stdio.h>
47	#include <stdlib.h>	47	#include <stdlib.h>
48	#include <unistd.h>	48	#include <unistd.h>
49	#include <bool.h>	49	#include <bool.h>
50	#include <fcntl.h>	50	#include <fcntl.h>
51	#include <sys/types.h>	51	#include <sys/types.h>
52	#include <ipc/ipc.h>	52	#include <ipc/ipc.h>
53	#include <ipc/loader.h>	53	#include <ipc/loader.h>
54	#include <loader/pcb.h>	54	#include <loader/pcb.h>
55	#include <errno.h>	55	#include <errno.h>
56	#include <async.h>	56	#include <async.h>
57	#include <as.h>	57	#include <as.h>
58		58
59	#include <elf.h>	59	#include <elf.h>
60	#include <elf_load.h>	60	#include <elf_load.h>
61		61
62	/**	62	/**
63	* Bias used for loading the dynamic linker. This will be soon replaced	63	* Bias used for loading the dynamic linker. This will be soon replaced
64	* by automatic placement.	64	* by automatic placement.
65	*/	65	*/
66	#define RTLD_BIAS 0x80000	66	#define RTLD_BIAS 0x80000
67		67
68	/** Pathname of the file that will be loaded */	68	/** Pathname of the file that will be loaded */
69	static char *pathname = NULL;	69	static char *pathname = NULL;
70		70
71	/** The Program control block */	71	/** The Program control block */
72	static pcb_t pcb;	72	static pcb_t pcb;
73		73
74	/** Number of arguments */	74	/** Number of arguments */
75	static int argc = 0;	75	static int argc = 0;
76	/** Argument vector */	76	/** Argument vector */
77	static char **argv = NULL;	77	static char **argv = NULL;
78	/** Buffer holding all arguments */	78	/** Buffer holding all arguments */
79	static char *arg_buf = NULL;	79	static char *arg_buf = NULL;
80		80
81	static elf_info_t prog_info;	81	static elf_info_t prog_info;
82	static elf_info_t interp_info;	82	static elf_info_t interp_info;
83		83
84	static bool is_dyn_linked;	84	static bool is_dyn_linked;
85		85
86		86
87	static void loader_get_taskid(ipc_callid_t rid, ipc_call_t *request)	87	static void loader_get_taskid(ipc_callid_t rid, ipc_call_t *request)
88	{	88	{
89	ipc_callid_t callid;	89	ipc_callid_t callid;
90	task_id_t task_id;	90	task_id_t task_id;
91	size_t len;	91	size_t len;
92		92
93	task_id = task_get_id();	93	task_id = task_get_id();
94		94
95	if (!ipc_data_read_receive(&callid, &len)) {	95	if (!ipc_data_read_receive(&callid, &len)) {
96	ipc_answer_0(callid, EINVAL);	96	ipc_answer_0(callid, EINVAL);
97	ipc_answer_0(rid, EINVAL);	97	ipc_answer_0(rid, EINVAL);
98	return;	98	return;
99	}	99	}
100		100
101	if (len > sizeof(task_id)) len = sizeof(task_id);	101	if (len > sizeof(task_id)) len = sizeof(task_id);
102		102
103	ipc_data_read_finalize(callid, &task_id, len);	103	ipc_data_read_finalize(callid, &task_id, len);
104	ipc_answer_0(rid, EOK);	104	ipc_answer_0(rid, EOK);
105	}	105	}
106		106
107		107
108	/** Receive a call setting pathname of the program to execute.	108	/** Receive a call setting pathname of the program to execute.
109	*	109	*
110	* @param rid	110	* @param rid
111	* @param request	111	* @param request
112	*/	112	*/
113	static void loader_set_pathname(ipc_callid_t rid, ipc_call_t *request)	113	static void loader_set_pathname(ipc_callid_t rid, ipc_call_t *request)
114	{	114	{
115	ipc_callid_t callid;	115	ipc_callid_t callid;
116	size_t len;	116	size_t len;
117	char *name_buf;	117	char *name_buf;
118		118
119	if (!ipc_data_write_receive(&callid, &len)) {	119	if (!ipc_data_write_receive(&callid, &len)) {
120	ipc_answer_0(callid, EINVAL);	120	ipc_answer_0(callid, EINVAL);
121	ipc_answer_0(rid, EINVAL);	121	ipc_answer_0(rid, EINVAL);
122	return;	122	return;
123	}	123	}
124		124
125	name_buf = malloc(len + 1);	125	name_buf = malloc(len + 1);
126	if (!name_buf) {	126	if (!name_buf) {
127	ipc_answer_0(callid, ENOMEM);	127	ipc_answer_0(callid, ENOMEM);
128	ipc_answer_0(rid, ENOMEM);	128	ipc_answer_0(rid, ENOMEM);
129	return;	129	return;
130	}	130	}
131		131
132	ipc_data_write_finalize(callid, name_buf, len);	132	ipc_data_write_finalize(callid, name_buf, len);
133	ipc_answer_0(rid, EOK);	133	ipc_answer_0(rid, EOK);
134		134
135	if (pathname != NULL) {	135	if (pathname != NULL) {
136	free(pathname);	136	free(pathname);
137	pathname = NULL;	137	pathname = NULL;
138	}	138	}
139		139
140	name_buf[len] = '\0';	140	name_buf[len] = '\0';
141	pathname = name_buf;	141	pathname = name_buf;
142	}	142	}
143		143
144	/** Receive a call setting arguments of the program to execute.	144	/** Receive a call setting arguments of the program to execute.
145	*	145	*
146	* @param rid	146	* @param rid
147	* @param request	147	* @param request
148	*/	148	*/
149	static void loader_set_args(ipc_callid_t rid, ipc_call_t *request)	149	static void loader_set_args(ipc_callid_t rid, ipc_call_t *request)
150	{	150	{
151	ipc_callid_t callid;	151	ipc_callid_t callid;
152	size_t buf_len, arg_len;	152	size_t buf_len, arg_len;
153	char *p;	153	char *p;
154	int n;	154	int n;
155		155
156	if (!ipc_data_write_receive(&callid, &buf_len)) {	156	if (!ipc_data_write_receive(&callid, &buf_len)) {
157	ipc_answer_0(callid, EINVAL);	157	ipc_answer_0(callid, EINVAL);
158	ipc_answer_0(rid, EINVAL);	158	ipc_answer_0(rid, EINVAL);
159	return;	159	return;
160	}	160	}
161		161
162	if (arg_buf != NULL) {	162	if (arg_buf != NULL) {
163	free(arg_buf);	163	free(arg_buf);
164	arg_buf = NULL;	164	arg_buf = NULL;
165	}	165	}
166		166
167	if (argv != NULL) {	167	if (argv != NULL) {
168	free(argv);	168	free(argv);
169	argv = NULL;	169	argv = NULL;
170	}	170	}
171		171
172	arg_buf = malloc(buf_len + 1);	172	arg_buf = malloc(buf_len + 1);
173	if (!arg_buf) {	173	if (!arg_buf) {
174	ipc_answer_0(callid, ENOMEM);	174	ipc_answer_0(callid, ENOMEM);
175	ipc_answer_0(rid, ENOMEM);	175	ipc_answer_0(rid, ENOMEM);
176	return;	176	return;
177	}	177	}
178		178
179	ipc_data_write_finalize(callid, arg_buf, buf_len);	179	ipc_data_write_finalize(callid, arg_buf, buf_len);
180	ipc_answer_0(rid, EOK);	180	ipc_answer_0(rid, EOK);
181		181
182	arg_buf[buf_len] = '\0';	182	arg_buf[buf_len] = '\0';
183		183
184	/*	184	/*
185	* Count number of arguments	185	* Count number of arguments
186	*/	186	*/
187	p = arg_buf;	187	p = arg_buf;
188	n = 0;	188	n = 0;
189	while (p < arg_buf + buf_len) {	189	while (p < arg_buf + buf_len) {
190	arg_len = strlen(p);	190	arg_len = strlen(p);
191	p = p + arg_len + 1;	191	p = p + arg_len + 1;
192	++n;	192	++n;
193	}	193	}
194		194
195	/* Allocate argv */	195	/* Allocate argv */
196	argv = malloc((n + 1) * sizeof(char *));	196	argv = malloc((n + 1) * sizeof(char *));
197		197
198	if (argv == NULL) {	198	if (argv == NULL) {
199	free(arg_buf);	199	free(arg_buf);
200	ipc_answer_0(callid, ENOMEM);	200	ipc_answer_0(callid, ENOMEM);
201	ipc_answer_0(rid, ENOMEM);	201	ipc_answer_0(rid, ENOMEM);
202	return;	202	return;
203	}	203	}
204		204
205	/*	205	/*
206	* Fill argv with argument pointers	206	* Fill argv with argument pointers
207	*/	207	*/
208	p = arg_buf;	208	p = arg_buf;
209	n = 0;	209	n = 0;
210	while (p < arg_buf + buf_len) {	210	while (p < arg_buf + buf_len) {
211	argv[n] = p;	211	argv[n] = p;
212		212
213	arg_len = strlen(p);	213	arg_len = strlen(p);
214	p = p + arg_len + 1;	214	p = p + arg_len + 1;
215	++n;	215	++n;
216	}	216	}
217		217
218	argc = n;	218	argc = n;
219	argv[n] = NULL;	219	argv[n] = NULL;
220	}	220	}
221		221
222	/** Load the previously selected program.	222	/** Load the previously selected program.
223	*	223	*
224	* @param rid	224	* @param rid
225	* @param request	225	* @param request
226	* @return 0 on success, !0 on error.	226	* @return 0 on success, !0 on error.
227	*/	227	*/
228	static int loader_load(ipc_callid_t rid, ipc_call_t *request)	228	static int loader_load(ipc_callid_t rid, ipc_call_t *request)
229	{	229	{
230	int rc;	230	int rc;
231		231
232	// printf("Load program '%s'\n", pathname);	232	// printf("Load program '%s'\n", pathname);
233		233
234	rc = elf_load_file(pathname, 0, &prog_info);	234	rc = elf_load_file(pathname, 0, &prog_info);
235	if (rc < 0) {	235	if (rc < 0) {
236	printf("failed to load program\n");	236	printf("failed to load program\n");
237	ipc_answer_0(rid, EINVAL);	237	ipc_answer_0(rid, EINVAL);
238	return 1;	238	return 1;
239	}	239	}
240		240
241	// printf("Create PCB\n");	241	// printf("Create PCB\n");
242	elf_create_pcb(&prog_info, &pcb);	242	elf_create_pcb(&prog_info, &pcb);
243		243
244	pcb.argc = argc;	244	pcb.argc = argc;
245	pcb.argv = argv;	245	pcb.argv = argv;
246		246
247	if (prog_info.interp == NULL) {	247	if (prog_info.interp == NULL) {
248	/* Statically linked program */	248	/* Statically linked program */
249	// printf("Run statically linked program\n");	249	// printf("Run statically linked program\n");
250	// printf("entry point: 0x%llx\n", prog_info.entry);	250	// printf("entry point: 0x%lx\n", prog_info.entry);
251	is_dyn_linked = false;	251	is_dyn_linked = false;
252	ipc_answer_0(rid, EOK);	252	ipc_answer_0(rid, EOK);
253	return 0;	253	return 0;
254	}	254	}
255		255
256	printf("Load dynamic linker '%s'\n", prog_info.interp);	256	printf("Load dynamic linker '%s'\n", prog_info.interp);
257	rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info);	257	rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info);
258	if (rc < 0) {	258	if (rc < 0) {
259	printf("failed to load dynamic linker\n");	259	printf("failed to load dynamic linker\n");
260	ipc_answer_0(rid, EINVAL);	260	ipc_answer_0(rid, EINVAL);
261	return 1;	261	return 1;
262	}	262	}
263		263
264	/*	264	/*
265	* Provide dynamic linker with some useful data	265	* Provide dynamic linker with some useful data
266	*/	266	*/
267	pcb.rtld_dynamic = interp_info.dynamic;	267	pcb.rtld_dynamic = interp_info.dynamic;
268	pcb.rtld_bias = RTLD_BIAS;	268	pcb.rtld_bias = RTLD_BIAS;
269		269
270	is_dyn_linked = true;	270	is_dyn_linked = true;
271	ipc_answer_0(rid, EOK);	271	ipc_answer_0(rid, EOK);
272		272
273	return 0;	273	return 0;
274	}	274	}
275		275
276		276
277	/** Run the previously loaded program.	277	/** Run the previously loaded program.
278	*	278	*
279	* @param rid	279	* @param rid
280	* @param request	280	* @param request
281	* @return 0 on success, !0 on error.	281	* @return 0 on success, !0 on error.
282	*/	282	*/
283	static void loader_run(ipc_callid_t rid, ipc_call_t *request)	283	static void loader_run(ipc_callid_t rid, ipc_call_t *request)
284	{	284	{
285	if (is_dyn_linked == true) {	285	if (is_dyn_linked == true) {
286	/* Dynamically linked program */	286	/* Dynamically linked program */
287	printf("run dynamic linker\n");	287	printf("run dynamic linker\n");
288	printf("entry point: 0x%llx\n", interp_info.entry);	288	printf("entry point: 0x%lx\n", interp_info.entry);
289	close_console();	289	close_console();
290		290
291	ipc_answer_0(rid, EOK);	291	ipc_answer_0(rid, EOK);
292	elf_run(&interp_info, &pcb);	292	elf_run(&interp_info, &pcb);
293		293
294	} else {	294	} else {
295	/* Statically linked program */	295	/* Statically linked program */
296	close_console();	296	close_console();
297	ipc_answer_0(rid, EOK);	297	ipc_answer_0(rid, EOK);
298	elf_run(&prog_info, &pcb);	298	elf_run(&prog_info, &pcb);
299	}	299	}
300		300
301	/* Not reached */	301	/* Not reached */
302	}	302	}
303		303
304	/** Handle loader connection.	304	/** Handle loader connection.
305	*	305	*
306	* Receive and carry out commands (of which the last one should be	306	* Receive and carry out commands (of which the last one should be
307	* to execute the loaded program).	307	* to execute the loaded program).
308	*/	308	*/
309	static void loader_connection(ipc_callid_t iid, ipc_call_t *icall)	309	static void loader_connection(ipc_callid_t iid, ipc_call_t *icall)
310	{	310	{
311	ipc_callid_t callid;	311	ipc_callid_t callid;
312	ipc_call_t call;	312	ipc_call_t call;
313	int retval;	313	int retval;
314		314
315	/* Ignore parameters, the connection is already open */	315	/* Ignore parameters, the connection is already open */
316	(void)iid; (void)icall;	316	(void)iid; (void)icall;
317		317
318	while (1) {	318	while (1) {
319	callid = async_get_call(&call);	319	callid = async_get_call(&call);
320		320
321	switch (IPC_GET_METHOD(call)) {	321	switch (IPC_GET_METHOD(call)) {
-		322	case IPC_M_PHONE_HUNGUP:
-		323	exit(0);
322	case LOADER_GET_TASKID:	324	case LOADER_GET_TASKID:
323	loader_get_taskid(callid, &call);	325	loader_get_taskid(callid, &call);
324	continue;	326	continue;
325	case LOADER_SET_PATHNAME:	327	case LOADER_SET_PATHNAME:
326	loader_set_pathname(callid, &call);	328	loader_set_pathname(callid, &call);
327	continue;	329	continue;
328	case LOADER_SET_ARGS:	330	case LOADER_SET_ARGS:
329	loader_set_args(callid, &call);	331	loader_set_args(callid, &call);
330	continue;	332	continue;
331	case LOADER_LOAD:	333	case LOADER_LOAD:
332	loader_load(callid, &call);	334	loader_load(callid, &call);
333	continue;	335	continue;
334	case LOADER_RUN:	336	case LOADER_RUN:
335	loader_run(callid, &call);	337	loader_run(callid, &call);
336	/* Not reached */	338	/* Not reached */
337	default:	339	default:
338	retval = ENOENT;	340	retval = ENOENT;
339	break;	341	break;
340	}	342	}
341	if ((callid & IPC_CALLID_NOTIFICATION) == 0 &&	343	if ((callid & IPC_CALLID_NOTIFICATION) == 0 &&
342	IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP) {	344	IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP) {
343	printf("responding EINVAL to method %d\n",	345	printf("responding EINVAL to method %d\n",
344	IPC_GET_METHOD(call));	346	IPC_GET_METHOD(call));
345	ipc_answer_0(callid, EINVAL);	347	ipc_answer_0(callid, EINVAL);
346	}	348	}
347	}	349	}
348	}	350	}
349		351
350	/** Program loader main function.	352	/** Program loader main function.
351	*/	353	*/
352	int main(int argc, char *argv[])	354	int main(int argc, char *argv[])
353	{	355	{
354	ipc_callid_t callid;	356	ipc_callid_t callid;
355	ipc_call_t call;	357	ipc_call_t call;
356	ipcarg_t phone_hash;	358	ipcarg_t phone_hash;
357		359
358	/* The first call only communicates the incoming phone hash */	360	/* The first call only communicates the incoming phone hash */
359	callid = ipc_wait_for_call(&call);	361	callid = ipc_wait_for_call(&call);
360		362
361	if (IPC_GET_METHOD(call) != LOADER_HELLO) {	363	if (IPC_GET_METHOD(call) != LOADER_HELLO) {
362	if (IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP)	364	if (IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP)
363	ipc_answer_0(callid, EINVAL);	365	ipc_answer_0(callid, EINVAL);
364	return 1;	366	return 1;
365	}	367	}
366		368
367	ipc_answer_0(callid, EOK);	369	ipc_answer_0(callid, EOK);
368	phone_hash = call.in_phone_hash;	370	phone_hash = call.in_phone_hash;
369		371
370	/*	372	/*
371	* Up until now async must not be used as it couldn't	373	* Up until now async must not be used as it couldn't
372	* handle incoming requests. (Which means e.g. printf()	374	* handle incoming requests. (Which means e.g. printf()
373	* cannot be used)	375	* cannot be used)
374	*/	376	*/
375	async_new_connection(phone_hash, 0, NULL, loader_connection);	377	async_new_connection(phone_hash, 0, NULL, loader_connection);
376	async_manager();	378	async_manager();
377		379
378	/* not reached */	380	/* not reached */
379	return 0;	381	return 0;
380	}	382	}
381		383
382	/** @}	384	/** @}
383	*/	385	*/
384		386

Subversion Repositories HelenOS

(root)/branches/sparc/uspace/srv/loader/main.c – Rev 3492 → 3593