159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <limits.h>
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#include <linux/input.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/reboot.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <sys/limits.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <sys/wait.h>
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extern int __system(const char *command);
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#define BML_UNLOCK_ALL 0x8A29 ///< unlock all partition RO -> RW
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static int restore_internal(const char* bml, const char* filename)
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{
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char buf[4096];
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int dstfd, srcfd, bytes_read, bytes_written, total_read = 0;
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if (filename == NULL)
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srcfd = 0;
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else {
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srcfd = open(filename, O_RDONLY | O_LARGEFILE);
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if (srcfd < 0)
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return 2;
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}
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dstfd = open(bml, O_RDWR | O_LARGEFILE);
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if (dstfd < 0)
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return 3;
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if (ioctl(dstfd, BML_UNLOCK_ALL, 0))
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return 4;
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do {
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total_read += bytes_read = read(srcfd, buf, 4096);
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if (!bytes_read)
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break;
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if (bytes_read < 4096)
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memset(&buf[bytes_read], 0, 4096 - bytes_read);
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if (write(dstfd, buf, 4096) < 4096)
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return 5;
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} while(bytes_read == 4096);
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close(dstfd);
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close(srcfd);
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return 0;
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}
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int cmd_bml_restore_raw_partition(const char *partition, const char *filename)
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{
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if (strcmp(partition, "boot") != 0 && strcmp(partition, "recovery") != 0 && strcmp(partition, "recoveryonly") != 0)
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return 6;
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int ret = -1;
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if (strcmp(partition, "recoveryonly") != 0) {
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// always restore boot, regardless of whether recovery or boot is flashed.
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// this is because boot and recovery are the same on some samsung phones.
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// unless of course, recoveryonly is explictly chosen (bml8)
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ret = restore_internal("/dev/block/bml7", filename);
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if (ret != 0)
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return ret;
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}
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if (strcmp(partition, "recovery") == 0 || strcmp(partition, "recoveryonly") == 0)
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ret = restore_internal("/dev/block/bml8", filename);
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return ret;
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}
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int cmd_bml_backup_raw_partition(const char *partition, const char *out_file)
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{
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char* bml;
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if (strcmp("boot", partition) == 0)
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bml = "/dev/block/bml7";
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else if (strcmp("recovery", partition) == 0)
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bml = "/dev/block/bml8";
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else {
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printf("Invalid partition.\n");
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return -1;
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}
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int ch;
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FILE *in;
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FILE *out;
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int val = 0;
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char buf[512];
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unsigned sz = 0;
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unsigned i;
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int ret = -1;
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char *in_file = bml;
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in = fopen ( in_file, "r" );
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if (in == NULL)
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goto ERROR3;
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out = fopen ( out_file, "w" );
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if (out == NULL)
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goto ERROR2;
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fseek(in, 0L, SEEK_END);
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sz = ftell(in);
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fseek(in, 0L, SEEK_SET);
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if (sz % 512)
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{
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while ( ( ch = fgetc ( in ) ) != EOF )
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fputc ( ch, out );
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}
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else
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{
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for (i=0; i< (sz/512); i++)
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{
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if ((fread(buf, 512, 1, in)) != 1)
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goto ERROR1;
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if ((fwrite(buf, 512, 1, out)) != 1)
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goto ERROR1;
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}
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}
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fsync(out);
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ret = 0;
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ERROR1:
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fclose ( out );
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ERROR2:
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fclose ( in );
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ERROR3:
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return ret;
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}
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int cmd_bml_erase_raw_partition(const char *partition)
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{
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// TODO: implement raw wipe
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return 0;
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}
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int cmd_bml_erase_partition(const char *partition, const char *filesystem)
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{
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return -1;
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}
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int cmd_bml_mount_partition(const char *partition, const char *mount_point, const char *filesystem, int read_only)
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{
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return -1;
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}
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int cmd_bml_get_partition_device(const char *partition, char *device)
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{
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return -1;
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}
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