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/*
* Guillaume Cottenceau (gc@mandrakesoft.com)
*
* Copyright 2000 Mandrakesoft
*
* This software may be freely redistributed under the terms of the GNU
* public license.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
* (1) calculate dependencies
* (2) unarchive relevant modules
* (3) insmod them
*/
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "stage1.h"
#include "log.h"
#include "utils.h"
#include "frontend.h"
#include "mount.h"
#include "modules_descr.h"
#include "zlibsupport.h"
#include "modules.h"
static struct module_deps_elem * modules_deps = NULL;
extern long init_module(void *, unsigned long, const char *);
static const char *moderror(int err)
{
switch (err) {
case ENOEXEC:
return "Invalid module format";
case ENOENT:
return "Unknown symbol in module";
case ESRCH:
return "Module has wrong symbol version";
case EINVAL:
return "Invalid parameters";
default:
return strerror(err);
}
}
int insmod_local_file(char * path, char * options)
{
void *file;
unsigned long len;
int rc;
if (IS_TESTING)
return 0;
file = grab_file(path, &len);
if (!file) {
log_perror(asprintf_("\terror reading %s", path));
return -1;
}
rc = init_module(file, len, options ? options : "");
if (rc)
log_message("\terror: %s", moderror(errno));
return rc;
}
static char *kernel_module_extension(void)
{
return ".ko.gz";
}
static int load_modules_dependencies(void)
{
char * deps_file = "/modules/modules.dep";
char * buf, * ptr, * start, * end;
struct stat s;
int fd, line, i;
log_message("loading modules dependencies");
fd = open(deps_file, O_RDONLY);
if (fd == -1) {
log_perror(deps_file);
return -1;
}
fstat(fd, &s);
buf = alloca(s.st_size + 1);
if (read(fd, buf, s.st_size) != (ssize_t)s.st_size) {
log_perror(deps_file);
return -1;
}
buf[s.st_size] = '\0';
close(fd);
ptr = buf;
line = 0;
while (ptr) {
line++;
ptr = strchr(ptr + 1, '\n');
}
modules_deps = malloc(sizeof(*modules_deps) * (line+1));
start = buf;
line = 0;
while (start < (buf+s.st_size) && *start) {
char * tmp_deps[50];
char * modp;
end = strchr(start, '\n');
*end = '\0';
ptr = strchr(start, ':');
if (!ptr) {
start = end + 1;
continue;
}
*ptr = '\0';
ptr++;
while (*ptr && (*ptr == ' ')) ptr++;
/* sort of a good line */
modules_deps[line].filename = strdup(start);
modules_deps[line].modname = strdup(start);
modp = modules_deps[line].modname;
while (modp && *modp) {
if (*modp == '-')
*modp = '_';
modp++;
}
start = ptr;
i = 0;
while (start && *start) {
ptr = strchr(start, ' ');
if (ptr) *ptr = '\0';
tmp_deps[i++] = strdup(start);
if (ptr)
start = ptr + 1;
else
start = NULL;
while (start && *start && *start == ' ')
start++;
}
tmp_deps[i++] = NULL;
modules_deps[line].deps = memdup(tmp_deps, sizeof(char *) * i);
line++;
start = end + 1;
}
modules_deps[line].modname = NULL;
return 0;
}
void init_modules_insmoding(void)
{
if (load_modules_dependencies()) {
fatal_error("warning, error initing modules stuff, modules loading disabled");
}
}
static void add_modules_conf(char * str)
{
static char data[5000] = "";
char * target = "/tmp/modules.conf";
int fd;
if (strlen(data) + strlen(str) >= sizeof(data))
return;
strcat(data, str);
strcat(data, "\n");
fd = open(target, O_CREAT|O_WRONLY|O_TRUNC, 00660);
if (fd == -1) {
log_perror(str);
return;
}
if (write(fd, data, strlen(data) + 1) != (ssize_t) (strlen(data) + 1))
log_perror(str);
close(fd);
}
int module_already_present(const char * name)
{
FILE * f;
int answ = 0;
if ((f = fopen("/proc/modules", "rb"))) {
while (1) {
char buf[500];
if (!fgets(buf, sizeof(buf), f)) break;
if (!strncmp(name, buf, strlen(name)) && buf[strlen(name)] == ' ')
answ = 1;
}
fclose(f);
}
return answ;
}
static enum insmod_return insmod_with_deps(const char * mod_name, char * options, int allow_modules_floppy)
{
struct module_deps_elem * dep;
const char * filename;
dep = modules_deps;
while (dep && dep->modname && strcmp(dep->modname, mod_name)) dep++;
if (dep && dep->modname && dep->deps) {
char ** one_dep;
one_dep = dep->deps;
while (*one_dep) {
/* here, we can fail but we don't care, if the error is
* important, the desired module will fail also */
insmod_with_deps(*one_dep, NULL, allow_modules_floppy);
one_dep++;
}
}
if (dep && dep->filename) {
filename = dep->filename;
} else {
log_message("warning: unable to get module filename for %s", mod_name);
filename = mod_name;
}
if (module_already_present(mod_name))
return INSMOD_OK;
log_message("needs %s", filename);
{
char *file = asprintf_("/modules/%s%s", filename, kernel_module_extension());
return insmod_local_file(file, options);
}
}
#ifndef DISABLE_NETWORK
enum insmod_return my_insmod(const char * mod_name, enum driver_type type, char * options, int allow_modules_floppy)
#else
enum insmod_return my_insmod(const char * mod_name, enum driver_type type __attribute__ ((unused)), char * options, int allow_modules_floppy)
#endif
{
int i;
#ifndef DISABLE_NETWORK
char ** net_devices = NULL; /* fucking compiler */
#endif
if (module_already_present(mod_name))
return INSMOD_OK;
log_message("have to insmod %s", mod_name);
#ifndef DISABLE_NETWORK
if (type == NETWORK_DEVICES)
net_devices = get_net_devices();
#endif
#ifdef ENABLE_NETWORK_STANDALONE
{
char *cmd = options ? asprintf_("/sbin/modprobe %s %s", mod_name, options) :
asprintf_("/sbin/modprobe %s", mod_name);
log_message("running %s", cmd);
i = system(cmd);
}
#else
i = insmod_with_deps(mod_name, options, allow_modules_floppy);
#endif
if (i == 0) {
log_message("\tsucceeded %s", mod_name);
#ifndef DISABLE_NETWORK
if (type == NETWORK_DEVICES) {
char ** new_net_devices = get_net_devices();
while (new_net_devices && *new_net_devices) {
char alias[500];
char ** ptr = net_devices;
while (ptr && *ptr) {
if (!strcmp(*new_net_devices, *ptr))
goto already_present;
ptr++;
}
sprintf(alias, "alias %s %s", *new_net_devices, mod_name);
add_modules_conf(alias);
log_message("NET: %s", alias);
net_discovered_interface(*new_net_devices);
already_present:
new_net_devices++;
}
}
#endif
} else
log_message("warning, insmod failed (%s %s) (%d)", mod_name, options, i);
return i;
}
static enum return_type insmod_with_options(char * mod, enum driver_type type)
{
char * questions[] = { "Options", NULL };
static char ** answers = NULL;
enum return_type results;
char options[500] = "options ";
results = ask_from_entries("Please enter the parameters to give to the kernel:", questions, &answers, 24, NULL);
if (results != RETURN_OK)
return results;
strcat(options, mod);
strcat(options, " ");
strcat(options, answers[0]); // because my_insmod will eventually modify the string
if (my_insmod(mod, type, answers[0], 1) != INSMOD_OK) {
stg1_error_message("Insmod failed.");
return RETURN_ERROR;
}
add_modules_conf(options);
return RETURN_OK;
}
enum return_type ask_insmod(enum driver_type type)
{
enum return_type results;
char * choice;
char ** dlist = list_directory("/modules");
char ** modules = malloc(sizeof(char *) * string_array_length(dlist) + 1);
char ** descrs = malloc(sizeof(char *) * string_array_length(dlist) + 1);
char ** p_dlist = dlist;
char ** p_modules = modules;
char ** p_descrs = descrs;
unset_automatic(); /* we are in a fallback mode */
while (p_dlist && *p_dlist) {
int i;
if (!strstr(*p_dlist, kernel_module_extension())) {
p_dlist++;
continue;
}
*p_modules = *p_dlist;
(*p_modules)[strlen(*p_modules)-strlen(kernel_module_extension())] = '\0'; /* remove trailing .ko.gz */
for (i = 0 ; i < modules_descriptions_num ; i++) {
if (!strcmp(*p_modules, modules_descriptions[i].module))
*p_descrs = modules_descriptions[i].descr;
}
p_dlist++;
p_modules++;
p_descrs++;
}
*p_modules = NULL;
*p_descrs = NULL;
if (modules && *modules) {
char * mytype;
char msg[200];
if (type == SCSI_ADAPTERS)
mytype = "SCSI";
else if (type == NETWORK_DEVICES)
mytype = "NET";
else
return RETURN_ERROR;
snprintf(msg, sizeof(msg), "Which driver should I try to gain %s access?", mytype);
results = ask_from_list_comments(msg, modules, descrs, &choice);
if (results == RETURN_OK)
return insmod_with_options(choice, type);
else
return results;
} else {
return RETURN_BACK;
}
}
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