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/encode.c b/libtar/encode.c
new file mode 100644
index 0000000..662eff5
--- /dev/null
+++ b/libtar/encode.c
@@ -0,0 +1,213 @@
+/*
+** Copyright 1998-2003 University of Illinois Board of Trustees
+** Copyright 1998-2003 Mark D. Roth
+** All rights reserved.
+**
+** encode.c - libtar code to encode tar header blocks
+**
+** 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 <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
+
+#ifdef STDC_HEADERS
+# include <string.h>
+# include <stdlib.h>
+#endif
+
+
+/* magic, version, and checksum */
+void
+th_finish(TAR *t)
+{
+ if (t->options & TAR_GNU)
+ {
+ /* we're aiming for this result, but must do it in
+ * two calls to avoid FORTIFY segfaults on some Linux
+ * systems:
+ * strncpy(t->th_buf.magic, "ustar ", 8);
+ */
+ strncpy(t->th_buf.magic, "ustar ", 6);
+ strncpy(t->th_buf.version, " ", 2);
+ }
+ else
+ {
+ strncpy(t->th_buf.version, TVERSION, TVERSLEN);
+ strncpy(t->th_buf.magic, TMAGIC, TMAGLEN);
+ }
+
+ int_to_oct(th_crc_calc(t), t->th_buf.chksum, 8);
+}
+
+
+/* map a file mode to a typeflag */
+void
+th_set_type(TAR *t, mode_t mode)
+{
+ if (S_ISLNK(mode))
+ t->th_buf.typeflag = SYMTYPE;
+ if (S_ISREG(mode))
+ t->th_buf.typeflag = REGTYPE;
+ if (S_ISDIR(mode))
+ t->th_buf.typeflag = DIRTYPE;
+ if (S_ISCHR(mode))
+ t->th_buf.typeflag = CHRTYPE;
+ if (S_ISBLK(mode))
+ t->th_buf.typeflag = BLKTYPE;
+ if (S_ISFIFO(mode) || S_ISSOCK(mode))
+ t->th_buf.typeflag = FIFOTYPE;
+}
+
+
+/* encode file path */
+void
+th_set_path(TAR *t, char *pathname)
+{
+ char suffix[2] = "";
+ char *tmp;
+
+#ifdef DEBUG
+ printf("in th_set_path(th, pathname=\"%s\")\n", pathname);
+#endif
+
+ if (t->th_buf.gnu_longname != NULL)
+ free(t->th_buf.gnu_longname);
+ t->th_buf.gnu_longname = NULL;
+
+ if (pathname[strlen(pathname) - 1] != '/' && TH_ISDIR(t))
+ strcpy(suffix, "/");
+
+ if (strlen(pathname) > T_NAMELEN-1 && (t->options & TAR_GNU))
+ {
+ /* GNU-style long name */
+ t->th_buf.gnu_longname = strdup(pathname);
+ strncpy(t->th_buf.name, t->th_buf.gnu_longname, T_NAMELEN);
+ }
+ else if (strlen(pathname) > T_NAMELEN)
+ {
+ /* POSIX-style prefix field */
+ tmp = strchr(&(pathname[strlen(pathname) - T_NAMELEN - 1]), '/');
+ if (tmp == NULL)
+ {
+ printf("!!! '/' not found in \"%s\"\n", pathname);
+ return;
+ }
+ snprintf(t->th_buf.name, 100, "%s%s", &(tmp[1]), suffix);
+ snprintf(t->th_buf.prefix,
+ ((tmp - pathname + 1) <
+ 155 ? (tmp - pathname + 1) : 155), "%s", pathname);
+ }
+ else
+ /* classic tar format */
+ snprintf(t->th_buf.name, 100, "%s%s", pathname, suffix);
+
+#ifdef DEBUG
+ puts("returning from th_set_path()...");
+#endif
+}
+
+
+/* encode link path */
+void
+th_set_link(TAR *t, char *linkname)
+{
+#ifdef DEBUG
+ printf("==> th_set_link(th, linkname=\"%s\")\n", linkname);
+#endif
+
+ if (strlen(linkname) > T_NAMELEN-1 && (t->options & TAR_GNU))
+ {
+ /* GNU longlink format */
+ t->th_buf.gnu_longlink = strdup(linkname);
+ strcpy(t->th_buf.linkname, "././@LongLink");
+ }
+ else
+ {
+ /* classic tar format */
+ strlcpy(t->th_buf.linkname, linkname,
+ sizeof(t->th_buf.linkname));
+ if (t->th_buf.gnu_longlink != NULL)
+ free(t->th_buf.gnu_longlink);
+ t->th_buf.gnu_longlink = NULL;
+ }
+}
+
+
+/* encode device info */
+void
+th_set_device(TAR *t, dev_t device)
+{
+#ifdef DEBUG
+ printf("th_set_device(): major = %d, minor = %d\n",
+ major(device), minor(device));
+#endif
+ int_to_oct(major(device), t->th_buf.devmajor, 8);
+ int_to_oct(minor(device), t->th_buf.devminor, 8);
+}
+
+
+/* encode user info */
+void
+th_set_user(TAR *t, uid_t uid)
+{
+ struct passwd *pw;
+
+ pw = getpwuid(uid);
+ if (pw != NULL)
+ strlcpy(t->th_buf.uname, pw->pw_name, sizeof(t->th_buf.uname));
+
+ int_to_oct(uid, t->th_buf.uid, 8);
+}
+
+
+/* encode group info */
+void
+th_set_group(TAR *t, gid_t gid)
+{
+ struct group *gr;
+
+ gr = getgrgid(gid);
+ if (gr != NULL)
+ strlcpy(t->th_buf.gname, gr->gr_name, sizeof(t->th_buf.gname));
+
+ int_to_oct(gid, t->th_buf.gid, 8);
+}
+
+
+/* encode file mode */
+void
+th_set_mode(TAR *t, mode_t fmode)
+{
+ if (S_ISSOCK(fmode))
+ {
+ fmode &= ~S_IFSOCK;
+ fmode |= S_IFIFO;
+ }
+ int_to_oct(fmode, (t)->th_buf.mode, 8);
+}
+
+
+void
+th_set_from_stat(TAR *t, struct stat *s)
+{
+ th_set_type(t, s->st_mode);
+ if (S_ISCHR(s->st_mode) || S_ISBLK(s->st_mode))
+ th_set_device(t, s->st_rdev);
+ th_set_user(t, s->st_uid);
+ th_set_group(t, s->st_gid);
+ th_set_mode(t, s->st_mode);
+ th_set_mtime(t, s->st_mtime);
+ if (S_ISREG(s->st_mode))
+ th_set_size(t, s->st_size);
+ else
+ th_set_size(t, 0);
+}
+
+