Adding upstream version 3:4.8.30.upstream/3%4.8.30

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 1466 insertions, 0 deletions

diff --git a/src/vfs/sfs/Makefile.am b/src/vfs/sfs/Makefile.am
new file mode 100644
index 0000000..7de97d0
--- /dev/null
+++ b/src/vfs/sfs/Makefile.am
@@ -0,0 +1,16 @@
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diff --git a/src/vfs/sfs/Makefile.in b/src/vfs/sfs/Makefile.in
new file mode 100644
index 0000000..f9893eb
--- /dev/null
+++ b/src/vfs/sfs/Makefile.in
@@ -0,0 +1,794 @@
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+@ENABLE_VFS_SFS_TRUE@sfsconf_DATA = $(SFSCONFFILES)
+EXTRA_DIST = $(SFSCONFFILES)
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu src/vfs/sfs/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu src/vfs/sfs/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
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+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
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+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libvfs-sfs.la: $(libvfs_sfs_la_OBJECTS) $(libvfs_sfs_la_DEPENDENCIES) $(EXTRA_libvfs_sfs_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK)  $(libvfs_sfs_la_OBJECTS) $(libvfs_sfs_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sfs.Plo@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+install-sfsconfDATA: $(sfsconf_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(sfsconf_DATA)'; test -n "$(sfsconfdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(sfsconfdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(sfsconfdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(sfsconfdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(sfsconfdir)" || exit $$?; \
+	done
+
+uninstall-sfsconfDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(sfsconf_DATA)'; test -n "$(sfsconfdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(sfsconfdir)'; $(am__uninstall_files_from_dir)
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(sfsconfdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
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+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
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+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/sfs.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
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+install-data-am: install-sfsconfDATA
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+install-html: install-html-am
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+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/sfs.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
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+pdf: pdf-am
+
+pdf-am:
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+ps: ps-am
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+ps-am:
+
+uninstall-am: uninstall-sfsconfDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-sfsconfDATA \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-sfsconfDATA
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/vfs/sfs/sfs.c b/src/vfs/sfs/sfs.c
new file mode 100644
index 0000000..fdcc823
--- /dev/null
+++ b/src/vfs/sfs/sfs.c
@@ -0,0 +1,604 @@
+/*
+   Single File fileSystem
+
+   Copyright (C) 1998-2023
+   Free Software Foundation, Inc.
+
+   Written by:
+   Slava Zanko <slavazanko@gmail.com>, 2013
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander is free software: you can redistribute it
+   and/or modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   The Midnight Commander is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file
+ * \brief Source: Single File fileSystem
+ *
+ * This defines whole class of filesystems which contain single file
+ * inside. It is somehow similar to extfs, except that extfs makes
+ * whole virtual trees and we do only single virtual files.
+ *
+ * If you want to gunzip something, you should open it with \verbatim #ugz \endverbatim
+ * suffix, DON'T try to gunzip it yourself.
+ *
+ * Namespace: exports vfs_sfs_ops
+ */
+
+#include <config.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "lib/global.h"
+#include "lib/util.h"
+#include "lib/widget.h"         /* D_ERROR, D_NORMAL */
+
+#include "src/execute.h"        /* EXECUTE_AS_SHELL */
+
+#include "lib/vfs/vfs.h"
+#include "lib/vfs/utilvfs.h"
+#include "lib/vfs/xdirentry.h"
+#include "src/vfs/local/local.h"
+#include "lib/vfs/gc.h"         /* vfs_stamp_create */
+
+#include "sfs.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+#define MAXFS 32
+
+typedef enum
+{
+    F_NONE = 0x0,
+    F_1 = 0x1,
+    F_2 = 0x2,
+    F_NOLOCALCOPY = 0x4,
+    F_FULLMATCH = 0x8
+} sfs_flags_t;
+
+#define COPY_CHAR \
+    if ((size_t) (t - pad) > sizeof (pad)) \
+    { \
+        g_free (pqname); \
+        return (-1); \
+    } \
+    else \
+        *t++ = *s_iter;
+
+#define COPY_STRING(a) \
+    if ((t - pad) + strlen (a) > sizeof (pad)) \
+    { \
+        g_free (pqname); \
+        return (-1); \
+    } \
+    else \
+    { \
+        strcpy (t, a); \
+        t += strlen (a); \
+    }
+
+/*** file scope type declarations ****************************************************************/
+
+typedef struct cachedfile
+{
+    char *name;
+    char *cache;
+} cachedfile;
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** file scope variables ************************************************************************/
+
+static GSList *head = NULL;
+
+static struct vfs_s_subclass sfs_subclass;
+static struct vfs_class *vfs_sfs_ops = VFS_CLASS (&sfs_subclass);
+
+static int sfs_no = 0;
+static struct
+{
+    char *prefix;
+    char *command;
+    sfs_flags_t flags;
+} sfs_info[MAXFS];
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+cachedfile_compare (const void *a, const void *b)
+{
+    const cachedfile *cf = (const cachedfile *) a;
+    const char *name = (const char *) b;
+
+    return strcmp (name, cf->name);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_vfmake (const vfs_path_t * vpath, vfs_path_t * cache_vpath)
+{
+    int w;
+    char pad[10240];
+    char *s_iter, *t = pad;
+    gboolean was_percent = FALSE;
+    vfs_path_t *pname;          /* name of parent archive */
+    char *pqname;               /* name of parent archive, quoted */
+    const vfs_path_element_t *path_element;
+    mc_pipe_t *pip;
+    GError *error = NULL;
+
+    path_element = vfs_path_get_by_index (vpath, -1);
+    pname = vfs_path_clone (vpath);
+    vfs_path_remove_element_by_index (pname, -1);
+
+    w = path_element->class->which (path_element->class, path_element->vfs_prefix);
+    if (w == -1)
+        vfs_die ("This cannot happen... Hopefully.\n");
+
+    if ((sfs_info[w].flags & F_1) == 0
+        && strcmp (vfs_path_get_last_path_str (pname), PATH_SEP_STR) != 0)
+    {
+        vfs_path_free (pname, TRUE);
+        return (-1);
+    }
+
+    /*    if ((sfs_info[w].flags & F_2) || (!inpath) || (!*inpath)); else return -1; */
+    if ((sfs_info[w].flags & F_NOLOCALCOPY) != 0)
+        pqname = name_quote (vfs_path_as_str (pname), FALSE);
+    else
+    {
+        vfs_path_t *s;
+
+        s = mc_getlocalcopy (pname);
+        if (s == NULL)
+        {
+            vfs_path_free (pname, TRUE);
+            return (-1);
+        }
+
+        pqname = name_quote (vfs_path_get_last_path_str (s), FALSE);
+        vfs_path_free (s, TRUE);
+    }
+
+    vfs_path_free (pname, TRUE);
+
+    for (s_iter = sfs_info[w].command; *s_iter != '\0'; s_iter++)
+    {
+        if (was_percent)
+        {
+            const char *ptr = NULL;
+
+            was_percent = FALSE;
+
+            switch (*s_iter)
+            {
+            case '1':
+                ptr = pqname;
+                break;
+            case '2':
+                ptr = path_element->path;
+                break;
+            case '3':
+                ptr = vfs_path_get_last_path_str (cache_vpath);
+                break;
+            case '%':
+                COPY_CHAR;
+                continue;
+            default:
+                break;
+            }
+
+            if (ptr != NULL)
+            {
+                COPY_STRING (ptr);
+            }
+        }
+        else if (*s_iter == '%')
+            was_percent = TRUE;
+        else
+        {
+            COPY_CHAR;
+        }
+    }
+
+    g_free (pqname);
+
+    /* don't read stdout */
+    pip = mc_popen (pad, FALSE, TRUE, &error);
+    if (pip == NULL)
+    {
+        message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), error->message);
+        g_error_free (error);
+        return (-1);
+    }
+
+    pip->err.null_term = TRUE;
+
+    mc_pread (pip, &error);
+    if (error != NULL)
+    {
+        message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), error->message);
+        g_error_free (error);
+        mc_pclose (pip, NULL);
+        return (-1);
+    }
+
+    if (pip->err.len > 0)
+        message (D_ERROR, MSG_ERROR, _("SFS virtual file system:\n%s"), pip->err.buf);
+
+    mc_pclose (pip, NULL);
+    return 0;                   /* OK */
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static const char *
+sfs_redirect (const vfs_path_t * vpath)
+{
+    GSList *cur;
+    cachedfile *cf;
+    vfs_path_t *cache_vpath;
+    int handle;
+
+    cur = g_slist_find_custom (head, vfs_path_as_str (vpath), cachedfile_compare);
+
+    if (cur != NULL)
+    {
+        cf = (cachedfile *) cur->data;
+        vfs_stamp (vfs_sfs_ops, cf);
+        return cf->cache;
+    }
+
+    handle = vfs_mkstemps (&cache_vpath, "sfs", vfs_path_get_last_path_str (vpath));
+
+    if (handle == -1)
+        return "/SOMEONE_PLAYING_DIRTY_TMP_TRICKS_ON_US";
+
+    close (handle);
+
+    if (sfs_vfmake (vpath, cache_vpath) == 0)
+    {
+        cf = g_new (cachedfile, 1);
+        cf->name = g_strdup (vfs_path_as_str (vpath));
+        cf->cache = vfs_path_free (cache_vpath, FALSE);
+        head = g_slist_prepend (head, cf);
+
+        vfs_stamp_create (vfs_sfs_ops, (cachedfile *) head->data);
+        return cf->cache;
+    }
+
+    mc_unlink (cache_vpath);
+    vfs_path_free (cache_vpath, TRUE);
+    return "/I_MUST_NOT_EXIST";
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void *
+sfs_open (const vfs_path_t * vpath /*struct vfs_class *me, const char *path */ , int flags,
+          mode_t mode)
+{
+    int *info;
+    int fd;
+
+    fd = open (sfs_redirect (vpath), NO_LINEAR (flags), mode);
+    if (fd == -1)
+        return NULL;
+
+    info = g_new (int, 1);
+    *info = fd;
+
+    return info;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_stat (const vfs_path_t * vpath, struct stat *buf)
+{
+    return stat (sfs_redirect (vpath), buf);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_lstat (const vfs_path_t * vpath, struct stat *buf)
+{
+#ifndef HAVE_STATLSTAT
+    return lstat (sfs_redirect (vpath), buf);
+#else
+    return statlstat (sfs_redirect (vpath), buf);
+#endif
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_chmod (const vfs_path_t * vpath, mode_t mode)
+{
+    return chmod (sfs_redirect (vpath), mode);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_chown (const vfs_path_t * vpath, uid_t owner, gid_t group)
+{
+    return chown (sfs_redirect (vpath), owner, group);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_utime (const vfs_path_t * vpath, mc_timesbuf_t * times)
+{
+#ifdef HAVE_UTIMENSAT
+    return utimensat (AT_FDCWD, sfs_redirect (vpath), *times, 0);
+#else
+    return utime (sfs_redirect (vpath), times);
+#endif
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_readlink (const vfs_path_t * vpath, char *buf, size_t size)
+{
+    return readlink (sfs_redirect (vpath), buf, size);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static vfsid
+sfs_getid (const vfs_path_t * vpath)
+{
+    GSList *cur;
+
+    cur = g_slist_find_custom (head, vfs_path_as_str (vpath), cachedfile_compare);
+
+    return (vfsid) (cur != NULL ? cur->data : NULL);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+sfs_free (vfsid id)
+{
+    struct cachedfile *which;
+    GSList *cur;
+
+    which = (struct cachedfile *) id;
+    cur = g_slist_find (head, which);
+    if (cur == NULL)
+        vfs_die ("Free of thing which is unknown to me\n");
+
+    which = (struct cachedfile *) cur->data;
+    unlink (which->cache);
+    g_free (which->cache);
+    g_free (which->name);
+    g_free (which);
+
+    head = g_slist_delete_link (head, cur);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+sfs_fill_names (struct vfs_class *me, fill_names_f func)
+{
+    GSList *cur;
+
+    (void) me;
+
+    for (cur = head; cur != NULL; cur = g_slist_next (cur))
+        func (((cachedfile *) cur->data)->name);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+sfs_nothingisopen (vfsid id)
+{
+    /* FIXME: Investigate whether have to guard this like in
+       the other VFSs (see fd_usage in extfs) -- Norbert */
+    (void) id;
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static vfs_path_t *
+sfs_getlocalcopy (const vfs_path_t * vpath)
+{
+    return vfs_path_from_str (sfs_redirect (vpath));
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_ungetlocalcopy (const vfs_path_t * vpath, const vfs_path_t * local, gboolean has_changed)
+{
+    (void) vpath;
+    (void) local;
+    (void) has_changed;
+    return 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_init (struct vfs_class *me)
+{
+    char *mc_sfsini;
+    FILE *cfg;
+    char key[256];
+
+    (void) me;
+
+    mc_sfsini = g_build_filename (mc_global.sysconfig_dir, "sfs.ini", (char *) NULL);
+    cfg = fopen (mc_sfsini, "r");
+
+    if (cfg == NULL)
+    {
+        fprintf (stderr, _("%s: Warning: file %s not found\n"), "sfs_init()", mc_sfsini);
+        g_free (mc_sfsini);
+        return 0;
+    }
+    g_free (mc_sfsini);
+
+    sfs_no = 0;
+    while (sfs_no < MAXFS && fgets (key, sizeof (key), cfg) != NULL)
+    {
+        char *c, *semi = NULL;
+        sfs_flags_t flags = F_NONE;
+
+        if (*key == '#' || *key == '\n')
+            continue;
+
+        for (c = key; *c != '\0'; c++)
+            if (*c == ':' || IS_PATH_SEP (*c))
+            {
+                semi = c;
+                if (IS_PATH_SEP (*c))
+                {
+                    *c = '\0';
+                    flags |= F_FULLMATCH;
+                }
+                break;
+            }
+
+        if (semi == NULL)
+        {
+          invalid_line:
+            fprintf (stderr, _("Warning: Invalid line in %s:\n%s\n"), "sfs.ini", key);
+            continue;
+        }
+
+        for (c = semi + 1; *c != '\0' && !whitespace (*c); c++)
+            switch (*c)
+            {
+            case '1':
+                flags |= F_1;
+                break;
+            case '2':
+                flags |= F_2;
+                break;
+            case 'R':
+                flags |= F_NOLOCALCOPY;
+                break;
+            default:
+                fprintf (stderr, _("Warning: Invalid flag %c in %s:\n%s\n"), *c, "sfs.ini", key);
+            }
+
+        if (*c == '\0')
+            goto invalid_line;
+
+        c++;
+        *(semi + 1) = '\0';
+        semi = strchr (c, '\n');
+        if (semi != NULL)
+            *semi = '\0';
+
+        sfs_info[sfs_no].prefix = g_strdup (key);
+        sfs_info[sfs_no].command = g_strdup (c);
+        sfs_info[sfs_no].flags = flags;
+        sfs_no++;
+    }
+    fclose (cfg);
+
+    return 1;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+sfs_done (struct vfs_class *me)
+{
+    int i;
+
+    (void) me;
+
+    for (i = 0; i < sfs_no; i++)
+    {
+        MC_PTR_FREE (sfs_info[i].prefix);
+        MC_PTR_FREE (sfs_info[i].command);
+    }
+    sfs_no = 0;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static int
+sfs_which (struct vfs_class *me, const char *path)
+{
+    int i;
+
+    (void) me;
+
+    for (i = 0; i < sfs_no; i++)
+        if ((sfs_info[i].flags & F_FULLMATCH) != 0)
+        {
+            if (strcmp (path, sfs_info[i].prefix) == 0)
+                return i;
+        }
+        else if (strncmp (path, sfs_info[i].prefix, strlen (sfs_info[i].prefix)) == 0)
+            return i;
+
+    return (-1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+vfs_init_sfs (void)
+{
+    /* NULLize vfs_s_subclass members */
+    memset (&sfs_subclass, 0, sizeof (sfs_subclass));
+
+    vfs_init_class (vfs_sfs_ops, "sfs", VFSF_UNKNOWN, NULL);
+    vfs_sfs_ops->init = sfs_init;
+    vfs_sfs_ops->done = sfs_done;
+    vfs_sfs_ops->fill_names = sfs_fill_names;
+    vfs_sfs_ops->which = sfs_which;
+    vfs_sfs_ops->open = sfs_open;
+    vfs_sfs_ops->close = local_close;
+    vfs_sfs_ops->read = local_read;
+    vfs_sfs_ops->stat = sfs_stat;
+    vfs_sfs_ops->lstat = sfs_lstat;
+    vfs_sfs_ops->fstat = local_fstat;
+    vfs_sfs_ops->chmod = sfs_chmod;
+    vfs_sfs_ops->chown = sfs_chown;
+    vfs_sfs_ops->utime = sfs_utime;
+    vfs_sfs_ops->readlink = sfs_readlink;
+    vfs_sfs_ops->ferrno = local_errno;
+    vfs_sfs_ops->lseek = local_lseek;
+    vfs_sfs_ops->getid = sfs_getid;
+    vfs_sfs_ops->nothingisopen = sfs_nothingisopen;
+    vfs_sfs_ops->free = sfs_free;
+    vfs_sfs_ops->getlocalcopy = sfs_getlocalcopy;
+    vfs_sfs_ops->ungetlocalcopy = sfs_ungetlocalcopy;
+    vfs_register_class (vfs_sfs_ops);
+}
+
+/* --------------------------------------------------------------------------------------------- */
diff --git a/src/vfs/sfs/sfs.h b/src/vfs/sfs/sfs.h
new file mode 100644
index 0000000..c846c93
--- /dev/null
+++ b/src/vfs/sfs/sfs.h
@@ -0,0 +1,18 @@
+#ifndef MC__VFS_SFS_H
+#define MC__VFS_SFS_H
+
+/*** typedefs(not structures) and defined constants **********************************************/
+
+/*** enums ***************************************************************************************/
+
+/*** structures declarations (and typedefs of structures)*****************************************/
+
+/*** global variables defined in .c file *********************************************************/
+
+/*** declarations of public functions ************************************************************/
+
+void vfs_init_sfs (void);
+
+/*** inline functions ****************************************************************************/
+
+#endif /* MC__VFS_SFS_H */
diff --git a/src/vfs/sfs/sfs.ini b/src/vfs/sfs/sfs.ini
new file mode 100644
index 0000000..d817dc9
--- /dev/null
+++ b/src/vfs/sfs/sfs.ini
@@ -0,0 +1,34 @@
+#
+# This is config for Single File fileSystem
+#
+# Notice that output files (%3) are pre-created atomically in /tmp
+# with 0600 rights, so it is safe to > %3
+#
+gz/1	gzip < %1 > %3
+ugz/1	gzip -cdf < %1 > %3
+bz/1	bzip < %1 > %3
+ubz/1	bzip -d < %1 > %3
+bz2/1	bzip2 < %1 > %3
+ubz2/1	bzip2 -d < %1 > %3
+lz/1	lzip < %1 > %3
+ulz/1	lzip -d < %1 > %3
+lz4/1	lz4 < %1 > %3
+ulz4/1	lz4 -d < %1 > %3
+lzma/1	lzma < %1 > %3
+ulzma/1	lzma -d < %1 > %3
+xz/1	xz < %1 > %3
+uxz/1	xz -d < %1 > %3
+zst/1	zstd < %1 > %3
+uzst/1	zstd -d < %1 > %3
+tar/1	tar cf %3 %1
+tgz/1	tar czf %3 %1
+uhtml/1	lynx -force_html -dump %1 > %3
+uman/1	groff -Tascii -man %1 > %3
+uue/1	uuenpipe < %1 > %3
+uude/1	uudepipe < %1 > %3
+crlf/1	todos < %1 > %3
+cr/1	fromdos < %1 > %3
+# Fixme: we need it to fail whenever it should
+url:2	lynx -source `echo "%2" | sed 's-|-/-g'` > %3
+nop/1	cat %1 > %3
+strings/1	strings %1 > %3