EMILE/tools/emile.c

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/*
*
* (c) 2004-2007 Laurent Vivier <Laurent@Vivier.EU>
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
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#include <getopt.h>
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#include <libgen.h>
#include <libconfig.h>
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#include "libemile.h"
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#include "libmap.h"
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#include "device.h"
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int verbose = 0;
extern void scanbus(void);
static enum {
ACTION_NONE = 0x00000000,
ACTION_SCANBUS = 0x00000001,
ACTION_SET_HFS = 0x00000002,
ACTION_RESTORE = 0x00000004,
ACTION_BACKUP = 0x00000008,
ACTION_TEST = 0x00000010,
ACTION_CONFIG = 0x00000020,
ACTION_NO_FS = 0x00000040,
} action = ACTION_NONE;
enum {
ARG_NONE = 0,
ARG_SCANBUS,
ARG_SET_HFS,
ARG_RESTORE,
ARG_BACKUP,
ARG_VERBOSE ='v',
ARG_TEST = 't',
ARG_HELP = 'h',
ARG_CONFIG = 'c',
ARG_NO_FS = 'n',
};
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static struct option long_options[] =
{
{"scanbus", 0, NULL, ARG_SCANBUS },
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{"set-hfs", 0, NULL, ARG_SET_HFS },
{"restore", 2, NULL, ARG_RESTORE },
{"backup", 2, NULL, ARG_BACKUP },
{"verbose", 0, NULL, ARG_VERBOSE },
{"help", 0, NULL, ARG_HELP },
{"test", 0, NULL, ARG_TEST },
{"config", 1, NULL, ARG_CONFIG },
{"no-fs", 0, NULL, ARG_NO_FS },
{NULL, 0, NULL, 0 }
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};
static void usage(int argc, char** argv)
{
fprintf(stderr, "Usage: %s [OPTION]\n", argv[0]);
fprintf(stderr, "Update and install EMILE stuff on your SCSI disk.\n");
fprintf(stderr, "EMILE allows to boot linux directly from linux partition\n");
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fprintf(stderr," -h, --help display this text\n");
fprintf(stderr," -v, --verbose active verbose mode\n");
fprintf(stderr," -t, --test active test mode (don't write to disk)\n");
fprintf(stderr," --scanbus "
"display information about all disks and partitions\n");
fprintf(stderr," --restore[=FILE] restore boot block from FILE\n");
fprintf(stderr," --backup[=FILE] save current boot block to FILE\n");
fprintf(stderr," --set-hfs "
"set type of partition DEV to Apple_HFS\n"
" (needed to be bootable)\n");
fprintf(stderr," -c, --config FILE use config file FILE\n");
fprintf(stderr," -n, --no-fs "
"don't use EMILE embededed filesystems\n");
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fprintf(stderr, "\nbuild: \n%s\n", SIGNATURE);
}
static int open_map_of( char *dev_name, int flags,
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map_t **map, int *partition)
{
int ret;
int disk;
char disk_name[16];
int driver;
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device_io_t device;
ret = emile_scsi_get_rdev(dev_name, &driver, &disk, partition);
if (ret == -1)
return -2;
emile_get_dev_name(disk_name, driver, disk, 0);
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device_sector_size = 512;
device.data = (void*)device_open(disk_name, flags);
device.write_sector = (stream_write_sector_t)device_write_sector;
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device.read_sector = (stream_read_sector_t)device_read_sector;
device.close = (stream_close_t)device_close;
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device.get_blocksize = (stream_get_blocksize_t)device_get_blocksize;
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*map = map_open(&device);
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if (*map == NULL)
return -1;
return 0;
}
static int check_has_apple_driver(char *dev_name)
{
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map_t *map;
int partition;
int ret;
ret = open_map_of(dev_name, O_RDONLY, &map, &partition);
if (ret < 0)
return ret;
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ret = map_has_apple_driver(map);
map_close(map);
return ret;
}
static int check_is_hfs(char *dev_name)
{
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map_t *map;
int ret;
int partition;
char *part_type;
ret = open_map_of(dev_name, O_RDONLY, &map, &partition);
if (ret < 0)
return ret;
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ret = map_read(map, partition - 1);
if (ret == -1)
return -1;
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part_type = map_get_partition_type(map);
ret = (strcmp("Apple_HFS", part_type) == 0);
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map_close(map);
return ret;
}
static int check_is_EMILE_bootblock(char *dev_name)
{
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map_t *map;
int ret;
int partition;
char bootblock[BOOTBLOCK_SIZE];
int bootblock_type;
ret = open_map_of(dev_name, O_RDONLY, &map, &partition);
if (ret < 0)
return ret;
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ret = map_read(map, partition - 1);
if (ret == -1)
return -1;
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ret = map_bootblock_read(map, bootblock);
if (ret == -1)
return -1;
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bootblock_type = map_bootblock_get_type(bootblock);
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map_close(map);
return EMILE_BOOTBLOCK == bootblock_type;
}
static int backup_bootblock(char *dev_name, char *filename)
{
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map_t *map;
int ret;
int partition;
char bootblock[BOOTBLOCK_SIZE];
int fd;
ret = open_map_of(dev_name, O_RDONLY, &map, &partition);
if (ret < 0)
return ret;
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ret = map_read(map, partition - 1);
if (ret == -1)
return -1;
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ret = map_bootblock_read(map, bootblock);
if (ret == -1)
return -1;
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map_close(map);
/* save bootblock */
fd = open(filename, O_CREAT | O_EXCL | O_WRONLY, S_IRUSR | S_IWUSR);
if (fd == -1)
{
if (errno == EEXIST)
{
fprintf(stderr, "ERROR: \"%s\" already exists.\n",
filename);
}
return -1;
}
ret = write(fd, bootblock, BOOTBLOCK_SIZE);
if (ret != BOOTBLOCK_SIZE)
return -1;
close(fd);
return 0;
}
static int restore_bootblock(char *dev_name, char *filename)
{
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map_t *map;
int ret;
int partition;
char bootblock[BOOTBLOCK_SIZE];
int fd;
if (!check_is_EMILE_bootblock(dev_name))
{
fprintf(stderr, "ERROR: cannot restore bootblock over non-EMILE bootblock\n");
return -1;
}
/* read bootblock */
fd = open(filename, O_RDONLY);
if (fd == -1)
return -1;
ret = read(fd, bootblock, BOOTBLOCK_SIZE);
if (ret != BOOTBLOCK_SIZE)
return -1;
close(fd);
/* write bootblock */
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ret = open_map_of(dev_name, O_RDWR, &map, &partition);
if (ret < 0)
return -1;
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ret = map_read(map, partition - 1);
if (ret == -1)
return -1;
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ret = map_bootblock_write(map, bootblock);
if (ret == -1)
return -1;
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map_close(map);
return 0;
}
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static int copy_file_to_bootblock(char* first_path, char* dev_name)
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{
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map_t *map;
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int ret;
int partition;
char bootblock[BOOTBLOCK_SIZE];
int fd;
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/* read first level */
fd = open(first_path, O_RDONLY);
if (fd == -1)
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return -1;
ret = read(fd, bootblock, BOOTBLOCK_SIZE);
if (ret != BOOTBLOCK_SIZE)
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return -1;
close(fd);
/* write bootblock to partition */
ret = open_map_of(dev_name, O_RDWR, &map, &partition);
if (ret < 0)
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return -1;
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ret = map_read(map, partition - 1);
if (ret == -1)
return -1;
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ret = map_bootblock_write(map, bootblock);
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if (ret == -1)
return -1;
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map_close(map);
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return 0;
}
static int set_HFS(char *dev_name)
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{
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map_t *map;
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int ret;
int partition;
ret = open_map_of(dev_name, O_RDWR, &map, &partition);
if (ret < 0)
return -1;
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ret = map_read(map, partition - 1);
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if (ret == -1)
return -1;
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ret = map_set_partition_type(map, "Apple_HFS");
if (ret == -1)
return -1;
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ret = map_partition_set_bootable(map, 1);
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if (ret == -1)
return -1;
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ret = map_write(map, partition - 1);
if (ret == -1)
return -1;
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map_close(map);
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return 0;
}
static char *get_map_name(char *filename)
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{
char *a, *b;
char *base, *dir;
char *map_name;
a = strdup(filename);
base = basename(a);
b = strdup(filename);
dir = dirname(b);
map_name = (char*)malloc(strlen(filename) + 6);
if (map_name == NULL)
return NULL;
sprintf(map_name, "%s/.%s.map", dir, base);
free(a);
free(b);
return map_name;
}
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static int add_file(int8_t *configuration,
char *index, char *property, char *path, char *map_path)
{
struct emile_container *container;
unsigned short unit_id;
char map_info[64];
if (emile_is_url(path))
{
if (verbose)
printf(" %s %s\n", property, path);
config_set_indexed_property(configuration,
"title", index,
property, path);
return 0;
}
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if ((action & ACTION_TEST) != 0)
{
map_path = tempnam(NULL, "emile-map_path-");
}
else if (map_path == NULL)
{
map_path = get_map_name(path);
if (map_path == NULL)
return -1;
}
else
map_path = strdup(map_path);
/* get block mapping of kernel in filesystem */
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container = emile_second_create_mapfile(&unit_id, map_path, path);
if (container == NULL)
{
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free(map_path);
return -1;
}
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sprintf(map_info,
"container:(sd%d)0x%x,0x%x", unit_id,
container->blocks[0].offset,
container->blocks[0].count);
free(container);
if (verbose)
printf(" %s %s (%s = %s)\n", property, path, map_path, map_info);
config_set_indexed_property(configuration,
"title", index,
property, map_info);
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if ((action & ACTION_TEST) != 0)
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fprintf(stderr, "WARNING: test mode, you must remove manually %s\n", map_path);
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free(map_path);
return 0;
}
static int8_t *set_config_no_fs(char *config_path)
{
int8_t *conffile;
int fd;
int i;
int current;
int ret;
struct stat st;
int8_t *configuration;
char property[1024];
char property2[1024];
char property3[1024];
static char *prolog[] = {
"gestaltID",
"default",
"timeout",
"vga",
"modem",
"printer"
};
configuration = malloc(65536);
if (configuration == NULL)
{
fprintf(stderr,
"ERROR: cannot allocate memory for configuration\n");
return NULL;
}
memset(configuration, 0, 65536);
/* open configuration file */
fd = open(config_path, O_RDONLY);
if (fd == -1)
{
fprintf(stderr, "ERROR: cannot open %s\n", config_path);
return NULL;
}
if (fstat(fd, &st) == -1)
{
fprintf(stderr, "ERROR: cannot fstat %s\n", config_path);
return NULL;
}
conffile = (int8_t*)malloc(st.st_size);
if (conffile == NULL)
{
fprintf(stderr, "ERROR: cannot malloc() %s\n", config_path);
return NULL;
}
if (read(fd, conffile, st.st_size) != st.st_size)
{
fprintf(stderr, "ERROR: cannot read() %s\n", config_path);
return NULL;
}
close(fd);
/* copy prolog */
for (i = 0; i < sizeof(prolog) / sizeof(char*); i++)
{
if (config_get_property(conffile,
prolog[i],
property) != -1)
config_set_property(configuration, prolog[i], property);
}
current = 0;
while (1) {
ret = config_get_property(conffile + current,
"title", property);
if (ret == -1)
break;
config_add_property(configuration, "title", property);
if (verbose)
printf("title %s\n", property);
current += ret;
current = config_get_next_property(conffile, current,
NULL, NULL);
ret = config_get_indexed_property(conffile,
"title",
property,
"chainloader",
property2);
if (ret != -1)
{
if (emile_is_url(property2))
{
config_set_indexed_property(configuration,
"title", property,
"chainloader", property2);
}
else
{
int fd;
unsigned short unit_id;
struct emile_container *container;
struct stat st;
char *chainloader;
fd = open(property2, O_RDONLY);
if (fd == -1)
{
fprintf(stderr,
"ERROR: cannot open %s\n",
property2);
return NULL;
}
fstat(fd, &st);
container = malloc(
sizeof(struct emile_container) +
sizeof(struct emile_block));
if (container == NULL)
{
fprintf(stderr,
"ERROR: cannot malloc container"
"\n");
close(fd);
return NULL;
}
ret = emile_scsi_create_container(fd,
&unit_id,
container,
2);
close(fd);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot create container"
"\n");
free(container);
return NULL;
}
chainloader = malloc(32);
if (chainloader == NULL)
{
fprintf(stderr,
"ERROR: cannot malloc chainloader\n");
free(container);
return NULL;
}
sprintf(chainloader,
"block:(sd%d)0x%x,0x%lx", unit_id,
container->blocks[0].offset,
st.st_size);
free(container);
config_set_indexed_property(configuration,
"title", property,
"chainloader", chainloader);
free(chainloader);
}
}
ret = config_get_indexed_property(conffile,
"title",
property,
"kernel",
property2);
if (ret != -1)
{
ret = config_get_indexed_property(conffile,
"title",
property,
"kernel_map",
property3);
ret = add_file(configuration, property,
"kernel", property2,
ret == -1 ? NULL : property3);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot add kernel %s\n",
property2);
free(conffile);
free(configuration);
return NULL;
}
}
else
fprintf(stderr,
"WARNING: missing kernel entry for %s\n",
property);
ret = config_get_indexed_property(conffile,
"title",
property,
"initrd",
property2);
if (ret != -1)
{
ret = config_get_indexed_property(conffile,
"title",
property,
"initrd_map",
property3);
ret = add_file(configuration, property,
"initrd", property2,
ret == -1 ? NULL : property3);
if (ret == -1)
{
free(configuration);
fprintf(stderr,
"ERROR: cannot add initrd %s\n",
property3);
fprintf(stderr,
"ERROR: missing kernel entry for %s\n", property);
return NULL;
}
}
ret = config_get_indexed_property(conffile,
"title",
property,
"args",
property2);
if (ret != -1)
{
config_set_indexed_property(configuration,
"title", property,
"args", property2);
if (verbose)
printf(" args %s\n", property2);
}
}
if (strlen((char*)configuration) > 1023)
{
int fd;
char* bootconfig = "/boot/emile/.bootconfig";
/* do not fit in second paramstring */
fd = creat(bootconfig, S_IWUSR);
if (fd == -1)
{
free(configuration);
fprintf(stderr,
"ERROR: cannot create /boot/emile/.bootconfig\n");
return NULL;
}
write(fd, configuration, strlen((char*)configuration) + 1);
close(fd);
free(configuration);
configuration = malloc(1024);
if (configuration == NULL)
{
fprintf(stderr,
"ERROR: cannot allocate memory for configuration\n");
return NULL;
}
ret = add_file(configuration, NULL,
"configuration", bootconfig, NULL);
if (ret == -1)
{
free(configuration);
fprintf(stderr,
"ERROR: cannot add %s to configuration\n", bootconfig);
return NULL;
}
}
return configuration;
}
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static int8_t *set_config(char *config_path)
{
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int8_t *configuration;
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int driver, disk, partition;
int fd, ret;
fd = open(config_path, O_RDONLY);
if (fd == -1)
{
fprintf(stderr, "ERROR: cannot open %s\n", config_path);
return NULL;
}
ret = emile_scsi_get_dev(fd, &driver, &disk, &partition);
close(fd);
if (ret == -1)
{
fprintf(stderr, "cannot find partition and disk of %s\n",
config_path);
return NULL;
}
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configuration = (int8_t*)malloc(65536);
if (configuration == NULL)
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{
fprintf(stderr,
"ERROR: cannot allocate memory for configuration\n");
return NULL;
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}
memset(configuration, 0, 65536);
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sprintf((char*)configuration, "configuration (sd%d,%d)%s\n",
disk, partition - 1, config_path);
if (verbose)
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printf(" configuration (sd%d,%d)%s\n",
disk, partition - 1, config_path);
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return configuration;
}
int main(int argc, char **argv)
{
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char property[1024];
char *backup_path = PREFIX "/boot/emile/bootblock.backup";
char *config_path = PREFIX "/boot/emile/emile.conf";
char *first_path;
char *second_path;
int ret;
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int c;
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char *partition;
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int option_index = 0;
int drive, second, size;
int fd;
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int8_t *configuration;
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int8_t *config;
struct stat st;
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while(1)
{
c = getopt_long(argc, argv, "vhtc:", long_options, &option_index);
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if (c == -1)
break;
switch(c)
{
case ARG_VERBOSE:
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verbose++;
break;
case ARG_HELP:
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usage(argc, argv);
return 0;
case ARG_SCANBUS:
action |= ACTION_SCANBUS;
break;
case ARG_SET_HFS:
action |= ACTION_SET_HFS;
break;
case ARG_RESTORE:
action |= ACTION_RESTORE;
if (optarg != NULL)
backup_path = optarg;
break;
case ARG_BACKUP:
action |= ACTION_BACKUP;
if (optarg != NULL)
backup_path = optarg;
break;
case ARG_TEST:
action |= ACTION_TEST;
break;
case ARG_CONFIG:
action |= ACTION_CONFIG;
config_path = optarg;
break;
case ARG_NO_FS:
action |= ACTION_NO_FS;
break;
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default:
fprintf(stderr, "ERROR: unknown option %s (%d, %c)\n",
argv[optind], c, c);
return 1;
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}
}
if (action & ACTION_SCANBUS) {
if (action & ~ACTION_SCANBUS) {
fprintf(stderr,
"ERROR: \"--scanbus\" cannot be used with other arguments\n");
return 1;
}
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scanbus();
return 0;
}
/* read config file */
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fd = open(config_path, O_RDONLY);
if (fd == -1)
{
fprintf(stderr,
"ERROR: cannot open config file %s\n", config_path);
return 2;
}
if (fstat(fd, &st) == -1)
{
fprintf(stderr,
"ERROR: cannot fstat file %s\n", config_path);
return 2;
}
config = (int8_t*)malloc(st.st_size);
if (config == NULL)
{
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fprintf(stderr,
"ERROR: cannot malloc %s\n", config_path);
return 2;
}
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if (read(fd, config, st.st_size) != st.st_size)
{
fprintf(stderr, "ERROR: cannot read() %s\n", config_path);
return 5;
}
close(fd);
/* get partition */
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ret = config_get_property(config, "partition", property);
if (ret == -1)
{
fprintf(stderr, "ERROR: you must specify in %s a partition to set\n"
" EMILE bootblock\n", config_path);
fprintf(stderr,
" you can have the list of available partitions with \"--scanbus\".\n");
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free(config);
return 3;
}
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partition = strdup(property);
if (action & ACTION_RESTORE)
{
char* new_name;
if (action & ~ACTION_RESTORE)
{
fprintf(stderr,
"ERROR: \"--restore\" cannot be used with other arguments\n");
2008-04-16 18:32:17 +00:00
free(config);
return 13;
}
ret = restore_bootblock(partition, backup_path);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot restore bootblock %s from %s\n",
partition, backup_path);
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free(config);
return 14;
}
printf("Bootblock restore successfully done.\n");
/* rename backup file to .old */
new_name = (char*)malloc(strlen(backup_path) + 4 + 1);
sprintf(new_name, "%s.old", new_name);
unlink(new_name);
rename(backup_path, new_name);
free(new_name);
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free(config);
return 0;
}
ret = check_has_apple_driver(partition);
if (ret != -2)
{
if (ret == -1)
{
fprintf(stderr, "ERROR: cannot check if Apple_Driver exists\n");
fprintf(stderr, " you should try as root\n");
if ((action & ACTION_TEST) == 0)
{
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free(config);
return 4;
}
}
if (ret == 0)
{
fprintf(stderr,
"ERROR: to be bootable a disk must have an Apple Driver on it\n");
fprintf(stderr,
" You must partition this disk with Apple Disk utility\n");
fprintf(stderr,
" or wait a release of EMILE allowing you to add this driver\n");
if ((action & ACTION_TEST) == 0)
{
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free(config);
return 5;
}
}
ret = check_is_hfs(partition);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot check if partition is Apple_HFS\n");
fprintf(stderr, " you should try as root\n");
if ((action & ACTION_TEST) == 0)
{
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free(config);
return 6;
}
}
if ( (ret == 0) && !(action & ACTION_SET_HFS) )
{
fprintf(stderr,
"ERROR: to be bootable a partition must be of type Apple_HFS\n");
fprintf(stderr,
" you can change it to Apple_HFS using \"--set-hfs\" argument\n");
if ((action & ACTION_TEST) == 0)
{
2008-04-16 18:32:17 +00:00
free(config);
return 7;
}
}
ret = check_is_EMILE_bootblock(partition);
if (ret == -1)
{
fprintf(stderr, "ERROR: cannot check bootblock type\n");
fprintf(stderr, " you should try as root\n");
if ((action & ACTION_TEST) == 0)
{
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free(config);
return 8;
}
}
}
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if ( (ret == 0) && ((action & ACTION_BACKUP) == 0) )
{
fprintf(stderr,
"ERROR: there is already a bootblock on \"%s\"\n", partition);
fprintf(stderr,
" you must use \"--backup\" to save it\n");
if ((action & ACTION_TEST) == 0)
{
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free(config);
return 9;
}
}
if (action & ACTION_BACKUP)
{
if (action & ACTION_TEST)
{
fprintf(stderr,
"ERROR: \"--backup\" cannot be used with \"--test\"\n");
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free(config);
return 13;
}
ret = backup_bootblock(partition, backup_path);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot backup bootblock %s to %s\n",
partition, backup_path);
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free(config);
return 14;
}
printf("Bootblock backup successfully done.\n");
}
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ret = config_get_property(config, "first_level", property);
if (ret == -1) {
fprintf(stderr,
"ERROR: missing first_level in config file\n");
return 2;
}
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first_path = strdup(property);
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ret = config_get_property(config, "second_level", property);
if (ret == -1) {
fprintf(stderr,
"ERROR: missing second_level in config file\n");
return 2;
}
2008-04-16 18:32:17 +00:00
second_path = strdup(property);
fd = open(first_path, O_RDONLY);
if (fd == -1)
{
fprintf(stderr,
"ERROR: cannot open \"%s\".\n", first_path);
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free(config);
return 20;
}
ret = emile_first_get_param(fd, &drive, &second, &size);
close(fd);
2004-12-07 00:39:39 +00:00
if ((action & ACTION_NO_FS) == 0)
configuration = set_config(config_path);
else
configuration = set_config_no_fs(config_path);
if (ret)
return ret;
if ((action & ACTION_TEST) == 0)
2004-12-26 20:12:44 +00:00
{
/* set configuration in second level */
fd = open(second_path, O_RDWR);
if (fd == -1) {
fprintf(stderr,
"ERROR: cannot open \"%s\".\n", second_path);
return 30;
}
emile_second_set_configuration(fd, configuration);
close(fd);
/* set second info in first level */
2004-12-26 20:12:44 +00:00
fd = open(first_path, O_RDWR);
ret = emile_first_set_param_scsi(fd, second_path);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot set \"%s\" information into \"%s\".\n",
second_path, first_path);
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free(first_path);
free(second_path);
free(config);
2008-02-25 21:49:18 +00:00
free(configuration);
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return 21;
}
2008-04-16 18:32:17 +00:00
free(second_path);
close(fd);
/* copy first level to boot block */
ret = copy_file_to_bootblock(first_path, partition);
if (ret == -1)
{
fprintf(stderr,
"ERROR: cannot write \"%s\" to bootblock of \"%s\".\n",
first_path, partition);
fprintf(stderr,
" %s\n", strerror(errno));
2008-04-16 18:32:17 +00:00
free(first_path);
free(config);
2008-02-25 21:49:18 +00:00
free(configuration);
2005-11-29 23:30:50 +00:00
return 22;
}
2008-04-16 18:32:17 +00:00
free(first_path);
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/* set HFS if needed */
if (action & ACTION_SET_HFS)
2004-12-23 23:48:35 +00:00
{
ret = set_HFS(partition);
if (ret == -1)
{
fprintf( stderr,
"ERROR: cannot set partition type of \"%s\" to Apple_HFS.\n"
, partition);
2008-04-16 18:32:17 +00:00
free(config);
2008-02-25 21:49:18 +00:00
free(configuration);
2005-11-29 23:30:50 +00:00
return 23;
2004-12-23 23:48:35 +00:00
}
}
}
2008-04-16 18:32:17 +00:00
free(partition);
free(config);
2008-02-25 21:49:18 +00:00
free(configuration);
return 0;
}