Add libtar to TWRP instead of using busybox tar
Add proper mkdosfs tool
Add fuse to TWRP
Add experimental exfat-fuse to TWRP
Convert all system() functions to use new Exec_Cmd function
diff --git a/libtar/append.c b/libtar/append.c
new file mode 100644
index 0000000..05024b9
--- /dev/null
+++ b/libtar/append.c
@@ -0,0 +1,256 @@
+/*
+** Copyright 1998-2003 University of Illinois Board of Trustees
+** Copyright 1998-2003 Mark D. Roth
+** All rights reserved.
+**
+** append.c - libtar code to append files to a tar archive
+**
+** Mark D. Roth <roth@uiuc.edu>
+** Campus Information Technologies and Educational Services
+** University of Illinois at Urbana-Champaign
+*/
+
+#include <internal.h>
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/param.h>
+#include <sys/types.h>
+
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+
+struct tar_dev
+{
+ dev_t td_dev;
+ libtar_hash_t *td_h;
+};
+typedef struct tar_dev tar_dev_t;
+
+struct tar_ino
+{
+ ino_t ti_ino;
+ char ti_name[MAXPATHLEN];
+};
+typedef struct tar_ino tar_ino_t;
+
+
+/* free memory associated with a tar_dev_t */
+void
+tar_dev_free(tar_dev_t *tdp)
+{
+ libtar_hash_free(tdp->td_h, free);
+ free(tdp);
+}
+
+
+/* appends a file to the tar archive */
+int
+tar_append_file(TAR *t, char *realname, char *savename)
+{
+ struct stat s;
+ int i;
+ libtar_hashptr_t hp;
+ tar_dev_t *td = NULL;
+ tar_ino_t *ti = NULL;
+ char path[MAXPATHLEN];
+
+#ifdef DEBUG
+ printf("==> tar_append_file(TAR=0x%lx (\"%s\"), realname=\"%s\", "
+ "savename=\"%s\")\n", t, t->pathname, realname,
+ (savename ? savename : "[NULL]"));
+#endif
+
+ if (lstat(realname, &s) != 0)
+ {
+#ifdef DEBUG
+ perror("lstat()");
+#endif
+ return -1;
+ }
+
+ /* set header block */
+#ifdef DEBUG
+ puts(" tar_append_file(): setting header block...");
+#endif
+ memset(&(t->th_buf), 0, sizeof(struct tar_header));
+ th_set_from_stat(t, &s);
+
+ /* set the header path */
+#ifdef DEBUG
+ puts(" tar_append_file(): setting header path...");
+#endif
+ th_set_path(t, (savename ? savename : realname));
+
+ /* check if it's a hardlink */
+#ifdef DEBUG
+ puts(" tar_append_file(): checking inode cache for hardlink...");
+#endif
+ libtar_hashptr_reset(&hp);
+ if (libtar_hash_getkey(t->h, &hp, &(s.st_dev),
+ (libtar_matchfunc_t)dev_match) != 0)
+ td = (tar_dev_t *)libtar_hashptr_data(&hp);
+ else
+ {
+#ifdef DEBUG
+ printf("+++ adding hash for device (0x%lx, 0x%lx)...\n",
+ major(s.st_dev), minor(s.st_dev));
+#endif
+ td = (tar_dev_t *)calloc(1, sizeof(tar_dev_t));
+ td->td_dev = s.st_dev;
+ td->td_h = libtar_hash_new(256, (libtar_hashfunc_t)ino_hash);
+ if (td->td_h == NULL)
+ return -1;
+ if (libtar_hash_add(t->h, td) == -1)
+ return -1;
+ }
+ libtar_hashptr_reset(&hp);
+ if (libtar_hash_getkey(td->td_h, &hp, &(s.st_ino),
+ (libtar_matchfunc_t)ino_match) != 0)
+ {
+ ti = (tar_ino_t *)libtar_hashptr_data(&hp);
+#ifdef DEBUG
+ printf(" tar_append_file(): encoding hard link \"%s\" "
+ "to \"%s\"...\n", realname, ti->ti_name);
+#endif
+ t->th_buf.typeflag = LNKTYPE;
+ th_set_link(t, ti->ti_name);
+ }
+ else
+ {
+#ifdef DEBUG
+ printf("+++ adding entry: device (0x%lx,0x%lx), inode %ld "
+ "(\"%s\")...\n", major(s.st_dev), minor(s.st_dev),
+ s.st_ino, realname);
+#endif
+ ti = (tar_ino_t *)calloc(1, sizeof(tar_ino_t));
+ if (ti == NULL)
+ return -1;
+ ti->ti_ino = s.st_ino;
+ snprintf(ti->ti_name, sizeof(ti->ti_name), "%s",
+ savename ? savename : realname);
+ libtar_hash_add(td->td_h, ti);
+ }
+
+ /* check if it's a symlink */
+ if (TH_ISSYM(t))
+ {
+ i = readlink(realname, path, sizeof(path));
+ if (i == -1)
+ return -1;
+ if (i >= MAXPATHLEN)
+ i = MAXPATHLEN - 1;
+ path[i] = '\0';
+#ifdef DEBUG
+ printf(" tar_append_file(): encoding symlink \"%s\" -> "
+ "\"%s\"...\n", realname, path);
+#endif
+ th_set_link(t, path);
+ }
+
+ /* print file info */
+ if (t->options & TAR_VERBOSE)
+ th_print_long_ls(t);
+
+#ifdef DEBUG
+ puts(" tar_append_file(): writing header");
+#endif
+ /* write header */
+ if (th_write(t) != 0)
+ {
+#ifdef DEBUG
+ printf("t->fd = %d\n", t->fd);
+#endif
+ return -1;
+ }
+#ifdef DEBUG
+ puts(" tar_append_file(): back from th_write()");
+#endif
+
+ /* if it's a regular file, write the contents as well */
+ if (TH_ISREG(t) && tar_append_regfile(t, realname) != 0)
+ return -1;
+
+ return 0;
+}
+
+
+/* write EOF indicator */
+int
+tar_append_eof(TAR *t)
+{
+ int i, j;
+ char block[T_BLOCKSIZE];
+
+ memset(&block, 0, T_BLOCKSIZE);
+ for (j = 0; j < 2; j++)
+ {
+ i = tar_block_write(t, &block);
+ if (i != T_BLOCKSIZE)
+ {
+ if (i != -1)
+ errno = EINVAL;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+/* add file contents to a tarchive */
+int
+tar_append_regfile(TAR *t, char *realname)
+{
+ char block[T_BLOCKSIZE];
+ int filefd;
+ int i, j;
+ size_t size;
+
+ filefd = open(realname, O_RDONLY);
+ if (filefd == -1)
+ {
+#ifdef DEBUG
+ perror("open()");
+#endif
+ return -1;
+ }
+
+ size = th_get_size(t);
+ for (i = size; i > T_BLOCKSIZE; i -= T_BLOCKSIZE)
+ {
+ j = read(filefd, &block, T_BLOCKSIZE);
+ if (j != T_BLOCKSIZE)
+ {
+ if (j != -1)
+ errno = EINVAL;
+ return -1;
+ }
+ if (tar_block_write(t, &block) == -1)
+ return -1;
+ }
+
+ if (i > 0)
+ {
+ j = read(filefd, &block, i);
+ if (j == -1)
+ return -1;
+ memset(&(block[i]), 0, T_BLOCKSIZE - i);
+ if (tar_block_write(t, &block) == -1)
+ return -1;
+ }
+
+ close(filefd);
+
+ return 0;
+}
+
+