diff options
Diffstat (limited to '')
| -rw-r--r-- | bmlutils/bmlutils.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/bmlutils/bmlutils.c b/bmlutils/bmlutils.c new file mode 100644 index 000000000..6971b7640 --- /dev/null +++ b/bmlutils/bmlutils.c @@ -0,0 +1,251 @@ +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <limits.h> +#include <linux/input.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/reboot.h> +#include <sys/types.h> +#include <time.h> +#include <unistd.h> + +#include <sys/wait.h> +#include <sys/limits.h> +#include <dirent.h> +#include <sys/stat.h> + +#include <signal.h> +#include <sys/wait.h> +#include "../extra-functions.h" + +//extern int __system(const char *command); +#define BML_UNLOCK_ALL 0x8A29 ///< unlock all partition RO -> RW + +#ifndef BOARD_BML_BOOT +#define BOARD_BML_BOOT "/dev/block/bml7" +#endif + +#ifndef BOARD_BML_RECOVERY +#define BOARD_BML_RECOVERY "/dev/block/bml8" +#endif + +#undef _PATH_BSHELL +#define _PATH_BSHELL "/sbin/sh" + +int __system(const char *command) +{ + pid_t pid; + sig_t intsave, quitsave; + sigset_t mask, omask; + int pstat; + char *argp[] = {"sh", "-c", NULL, NULL}; + + if (!command) /* just checking... */ + return(1); + + argp[2] = (char *)command; + + sigemptyset(&mask); + sigaddset(&mask, SIGCHLD); + sigprocmask(SIG_BLOCK, &mask, &omask); + switch (pid = vfork()) { + case -1: /* error */ + sigprocmask(SIG_SETMASK, &omask, NULL); + return(-1); + case 0: /* child */ + sigprocmask(SIG_SETMASK, &omask, NULL); + execve(_PATH_BSHELL, argp, environ); + _exit(127); + } + + intsave = (sig_t) bsd_signal(SIGINT, SIG_IGN); + quitsave = (sig_t) bsd_signal(SIGQUIT, SIG_IGN); + pid = waitpid(pid, (int *)&pstat, 0); + sigprocmask(SIG_SETMASK, &omask, NULL); + (void)bsd_signal(SIGINT, intsave); + (void)bsd_signal(SIGQUIT, quitsave); + return (pid == -1 ? -1 : pstat); +} + +static struct pid { + struct pid *next; + FILE *fp; + pid_t pid; +} *pidlist; + + +static int restore_internal(const char* bml, const char* filename) +{ + char buf[4096]; + int dstfd, srcfd, bytes_read, bytes_written, total_read = 0; + if (filename == NULL) + srcfd = 0; + else { + srcfd = open(filename, O_RDONLY | O_LARGEFILE); + if (srcfd < 0) + return 2; + } + dstfd = open(bml, O_RDWR | O_LARGEFILE); + if (dstfd < 0) + return 3; + if (ioctl(dstfd, BML_UNLOCK_ALL, 0)) + return 4; + do { + total_read += bytes_read = read(srcfd, buf, 4096); + if (!bytes_read) + break; + if (bytes_read < 4096) + memset(&buf[bytes_read], 0, 4096 - bytes_read); + if (write(dstfd, buf, 4096) < 4096) + return 5; + } while(bytes_read == 4096); + + close(dstfd); + close(srcfd); + + return 0; +} + +int cmd_bml_restore_raw_partition(const char *partition, const char *filename) +{ + if (strcmp(partition, "boot") != 0 && strcmp(partition, "recovery") != 0 && strcmp(partition, "recoveryonly") != 0 && partition[0] != '/') + return 6; + + int ret = -1; + if (strcmp(partition, "recoveryonly") != 0) { + // always restore boot, regardless of whether recovery or boot is flashed. + // this is because boot and recovery are the same on some samsung phones. + // unless of course, recoveryonly is explictly chosen (bml8) + ret = restore_internal(BOARD_BML_BOOT, filename); + if (ret != 0) + return ret; + } + + if (strcmp(partition, "recovery") == 0 || strcmp(partition, "recoveryonly") == 0) + ret = restore_internal(BOARD_BML_RECOVERY, filename); + + // support explicitly provided device paths + if (partition[0] == '/') + ret = restore_internal(partition, filename); + return ret; +} + +int cmd_bml_backup_raw_partition(const char *partition, const char *out_file) +{ + char* bml; + if (strcmp("boot", partition) == 0) + bml = BOARD_BML_BOOT; + else if (strcmp("recovery", partition) == 0) + bml = BOARD_BML_RECOVERY; + else if (partition[0] == '/') { + // support explicitly provided device paths + bml = partition; + } + else { + printf("Invalid partition.\n"); + return -1; + } + + int ch; + FILE *in; + FILE *out; + int val = 0; + char buf[512]; + unsigned sz = 0; + unsigned i; + int ret = -1; + char *in_file = bml; + + in = fopen ( in_file, "r" ); + if (in == NULL) + goto ERROR3; + + out = fopen ( out_file, "w" ); + if (out == NULL) + goto ERROR2; + + fseek(in, 0L, SEEK_END); + sz = ftell(in); + fseek(in, 0L, SEEK_SET); + + if (sz % 512) + { + while ( ( ch = fgetc ( in ) ) != EOF ) + fputc ( ch, out ); + } + else + { + for (i=0; i< (sz/512); i++) + { + if ((fread(buf, 512, 1, in)) != 1) + goto ERROR1; + if ((fwrite(buf, 512, 1, out)) != 1) + goto ERROR1; + } + } + + fsync(out); + ret = 0; +ERROR1: + fclose ( out ); +ERROR2: + fclose ( in ); +ERROR3: + return ret; +} + +int cmd_bml_erase_raw_partition(const char *partition) +{ + // TODO: implement raw wipe + return 0; +} + +int cmd_bml_erase_partition(const char *partition, const char *filesystem) +{ + return -1; +} + +int cmd_bml_mount_partition(const char *partition, const char *mount_point, const char *filesystem, int read_only) +{ + return -1; +} + +int cmd_bml_get_partition_device(const char *partition, char *device) +{ + return -1; +} + +int format_rfs_device (const char *device, const char *path) { + const char *fatsize = "32"; + const char *sectorsize = "1"; + + if (strcmp(path, "/datadata") == 0 || strcmp(path, "/cache") == 0) { + fatsize = "16"; + } + + // Just in case /data sector size needs to be altered + else if (strcmp(path, "/data") == 0 ) { + sectorsize = "1"; + } + + // dump 10KB of zeros to partition before format due to fat.format bug + char cmd[PATH_MAX]; + + sprintf(cmd, "/sbin/dd if=/dev/zero of=%s bs=4096 count=10", device); + if(__system(cmd)) { + printf("failure while zeroing rfs partition.\n"); + return -1; + } + + // Run fat.format + sprintf(cmd, "/sbin/fat.format -F %s -S 4096 -s %s %s", fatsize, sectorsize, device); + if(__system(cmd)) { + printf("failure while running fat.format\n"); + return -1; + } + + return 0; +} |