TWRP-ify AOSP code
Pull in most TWRP sources
Stub out partition management code
Make it compile -- probably will not boot
Kind of a mess but have to start somewhere
diff --git a/bmlutils/bmlutils.c b/bmlutils/bmlutils.c
new file mode 100644
index 0000000..6971b76
--- /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;
+}