new package: chroot

Actually it just a "standalone" chroot utility from the coreutils.

root-packages/chroot/build.sh

@@ -0,0 +1,45 @@
+TERMUX_PKG_HOMEPAGE=https://www.gnu.org/software/coreutils/
+TERMUX_PKG_DESCRIPTION="Chroot utility from the Coreutils"
+TERMUX_PKG_LICENSE="GPL-3.0"
+TERMUX_PKG_VERSION=8.30
+TERMUX_PKG_SHA256=e831b3a86091496cdba720411f9748de81507798f6130adeaef872d206e1b057
+TERMUX_PKG_SRCURL=https://mirrors.kernel.org/gnu/coreutils/coreutils-${TERMUX_PKG_VERSION}.tar.xz
+
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+gl_cv_host_operating_system=Android
+--disable-xattr
+--without-gmp
+"
+
+termux_step_pre_configure() {
+	CPPFLAGS+=" -DDEFAULT_TMPDIR=\\\"$TERMUX_PREFIX/tmp\\\""
+}
+
+termux_step_make() {
+	# deps for chroot.
+	make lib/configmake.h
+	make src/version.h
+	make lib/fcntl.h
+	make lib/time.h
+	make lib/sys/stat.h
+	make lib/selinux/context.h
+	make lib/selinux/selinux.h
+	make lib/unitypes.h
+	make lib/unistr.h
+	make lib/uniwidth.h
+	make lib/stdint.h
+	make lib/stdio.h
+	make lib/fnmatch.h
+	make lib/getopt.h
+	make lib/getopt-cdefs.h
+
+	# build standalone chroot utility.
+	make src/chroot
+}
+
+termux_step_make_install() {
+	install -Dm700 $TERMUX_PKG_BUILDDIR/src/chroot \
+		$TERMUX_PREFIX/bin/
+	install -Dm600 $TERMUX_PKG_SRCDIR/man/chroot.1 \
+		$TERMUX_PREFIX/share/man/man1/
+}

root-packages/chroot/configure.patch

@@ -0,0 +1,25 @@
+diff -r -u ../coreutils-8.22/configure ./configure
+--- ../coreutils-8.22/configure	2013-12-13 16:05:30.000000000 +0100
++++ ./configure	2014-02-12 18:21:28.000000000 +0100
+@@ -39537,7 +39537,7 @@
+ 
+ 
+ # Determine how to get the list of mounted file systems.
+-ac_list_mounted_fs=
++ac_list_mounted_fs=found
+ 
+ # If the getmntent function is available but not in the standard library,
+ # make sure LIBS contains the appropriate -l option.
+@@ -40077,12 +40077,6 @@
+   esac
+ fi
+ 
+-if test -z "$ac_list_mounted_fs"; then
+-  as_fn_error $? "could not determine how to read list of mounted file systems" "$LINENO" 5
+-  # FIXME -- no need to abort building the whole package
+-  # Can't build mountlist.c or anything that needs its functions
+-fi
+-
+ if test $ac_list_mounted_fs = found; then :
+   gl_cv_list_mounted_fs=yes
+ else

root-packages/chroot/lib-stdio-impl.h.patch

@@ -0,0 +1,12 @@
+diff -u -r ../coreutils-8.30/lib/stdio-impl.h ./lib/stdio-impl.h
+--- ../coreutils-8.30/lib/stdio-impl.h	2018-06-24 06:52:06.000000000 +0200
++++ ./lib/stdio-impl.h	2018-07-03 11:05:27.353619181 +0200
+@@ -60,7 +60,7 @@
+ #  define _flags pub._flags
+ #  define _r pub._r
+ #  define _w pub._w
+-# elif defined __ANDROID__ /* Android */
++# elif defined __ANDROID_BUT_THIS_IS_BROKEN__ /* Android */
+   /* Up to this commit from 2015-10-12
+      <https://android.googlesource.com/platform/bionic.git/+/f0141dfab10a4b332769d52fa76631a64741297a>
+      the innards of FILE were public, and fp_ub could be defined like for OpenBSD,

root-packages/chroot/mktemp.patch

@@ -0,0 +1,21 @@
+diff -u -r ../coreutils-8.22/src/mktemp.c ./src/mktemp.c
+--- ../coreutils-8.22/src/mktemp.c	2013-12-04 15:48:30.000000000 +0100
++++ ./src/mktemp.c	2014-06-03 11:31:58.351787119 +0200
+@@ -269,7 +269,7 @@
+           else if (dest_dir_arg && *dest_dir_arg)
+             dest_dir = dest_dir_arg;
+           else
+-            dest_dir = "/tmp";
++            dest_dir = "@TERMUX_PREFIX@/tmp";
+ 
+           if (last_component (template) != template)
+             error (EXIT_FAILURE, 0,
+@@ -283,7 +283,7 @@
+           else
+             {
+               char *env = getenv ("TMPDIR");
+-              dest_dir = (env && *env ? env : "/tmp");
++              dest_dir = (env && *env ? env : "@TERMUX_PREFIX@/tmp");
+             }
+           if (IS_ABSOLUTE_FILE_NAME (template))
+             error (EXIT_FAILURE, 0,

root-packages/chroot/nohup.c.patch

@@ -0,0 +1,17 @@
+Fix
+	error: call to '__umask_invalid_mode' declared with
+	attribute error: umask called with invalid mode
+on android-21
+
+diff -u -r ../coreutils-8.23/src/nohup.c ./src/nohup.c
+--- ../coreutils-8.23/src/nohup.c	2014-07-11 07:00:07.000000000 -0400
++++ ./src/nohup.c	2014-12-14 15:22:47.939242789 -0500
+@@ -141,7 +141,7 @@
+       char const *file = "nohup.out";
+       int flags = O_CREAT | O_WRONLY | O_APPEND;
+       mode_t mode = S_IRUSR | S_IWUSR;
+-      mode_t umask_value = umask (~mode);
++      mode_t umask_value = umask (0777 & ~mode);
+       out_fd = (redirecting_stdout
+                 ? fd_reopen (STDOUT_FILENO, file, flags, mode)
+                 : open (file, flags, mode));

root-packages/chroot/pwd.c.patch

@@ -0,0 +1,12 @@
+diff -u -r ../coreutils-8.23/src/pwd.c ./src/pwd.c
+--- ../coreutils-8.23/src/pwd.c	2014-07-13 18:09:52.000000000 -0400
++++ ./src/pwd.c	2015-05-17 19:58:20.692454980 -0400
+@@ -366,7 +366,7 @@
+   if (optind < argc)
+     error (0, 0, _("ignoring non-option arguments"));
+ 
+-  if (logical)
++  if (true) /* Termux: Always try logical, to avoid permission denied on /data/data */
+     {
+       wd = logical_getcwd ();
+       if (wd)

root-packages/chroot/src-ls.c.patch

@@ -0,0 +1,13 @@
+diff -u -r ../coreutils-8.26/src/ls.c ./src/ls.c
+--- ../coreutils-8.26/src/ls.c	2016-11-22 15:04:32.000000000 -0500
++++ ./src/ls.c	2016-11-30 20:27:28.910732105 -0500
+@@ -1749,6 +1749,9 @@
+       }
+   }
+ 
++  /* Termux patch: Default to colors if terminal. The --color option may override this. */
++  print_with_color = isatty(STDOUT_FILENO);
++
+   while (true)
+     {
+       int oi = -1;