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[Libguestfs] [PATCH 2/5] New API: setfiles - SELinux relabel parts of the filesystem.



---
 appliance/packagelist.in |  1 +
 daemon/Makefile.am       |  1 +
 daemon/setfiles.c        | 93 ++++++++++++++++++++++++++++++++++++++++++++++++
 generator/actions.ml     | 22 ++++++++++++
 gobject/Makefile.inc     |  2 ++
 src/MAX_PROC_NR          |  2 +-
 6 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100644 daemon/setfiles.c

diff --git a/appliance/packagelist.in b/appliance/packagelist.in
index 5f04c1c..3a4790b 100644
--- a/appliance/packagelist.in
+++ b/appliance/packagelist.in
@@ -43,6 +43,7 @@ ifelse(REDHAT,1,
   ntfs-3g
   openssh-clients
   pcre
+  policycoreutils
   reiserfs-utils
   libselinux
   syslinux-extlinux
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index b77d1e7..9bd495f 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -168,6 +168,7 @@ guestfsd_SOURCES = \
 	rsync.c \
 	scrub.c \
 	selinux.c \
+	setfiles.c \
 	sfdisk.c \
 	sh.c \
 	sleep.c \
diff --git a/daemon/setfiles.c b/daemon/setfiles.c
new file mode 100644
index 0000000..3f249c3
--- /dev/null
+++ b/daemon/setfiles.c
@@ -0,0 +1,93 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2016 Red Hat Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "guestfs_protocol.h"
+#include "daemon.h"
+#include "actions.h"
+
+GUESTFSD_EXT_CMD(str_setfiles, setfiles);
+
+#define MAX_ARGS 64
+
+/* Takes optional arguments, consult optargs_bitmask. */
+int
+do_setfiles (const char *specfile, const char *path,
+             int force)
+{
+  const char *argv[MAX_ARGS];
+  CLEANUP_FREE char *s_dev = NULL, *s_proc = NULL, *s_selinux = NULL,
+    *s_sys = NULL, *s_specfile = NULL, *s_path = NULL;
+  CLEANUP_FREE char *err = NULL;
+  size_t i = 0;
+
+  s_dev = sysroot_path ("/dev");
+  if (!s_dev) {
+  malloc_error:
+    reply_with_perror ("malloc");
+    return -1;
+  }
+  s_proc = sysroot_path ("/proc");       if (!s_proc) goto malloc_error;
+  s_selinux = sysroot_path ("/selinux"); if (!s_selinux) goto malloc_error;
+  s_sys = sysroot_path ("/sys");         if (!s_sys) goto malloc_error;
+  s_specfile = sysroot_path (specfile);  if (!s_specfile) goto malloc_error;
+  s_path = sysroot_path (path);          if (!s_path) goto malloc_error;
+
+  /* Default settings if not selected. */
+  if (!(optargs_bitmask & GUESTFS_SETFILES_FORCE_BITMASK))
+    force = 0;
+
+  ADD_ARG (argv, i, str_setfiles);
+  if (force)
+    ADD_ARG (argv, i, "-F");
+
+  /* Exclude some directories that should never be relabelled in
+   * ordinary Linux guests.  These won't be mounted anyway.  We have
+   * to prefix all these with the sysroot path.
+   */
+  ADD_ARG (argv, i, "-e"); ADD_ARG (argv, i, s_dev);
+  ADD_ARG (argv, i, "-e"); ADD_ARG (argv, i, s_proc);
+  ADD_ARG (argv, i, "-e"); ADD_ARG (argv, i, s_selinux);
+  ADD_ARG (argv, i, "-e"); ADD_ARG (argv, i, s_sys);
+
+  /* Relabelling in a chroot. */
+  if (STRNEQ (sysroot, "/")) {
+    ADD_ARG (argv, i, "-r");
+    ADD_ARG (argv, i, sysroot);
+  }
+
+  /* Suppress non-error output. */
+  ADD_ARG (argv, i, "-q");
+
+  /* Add parameters. */
+  ADD_ARG (argv, i, s_specfile);
+  ADD_ARG (argv, i, s_path);
+  ADD_ARG (argv, i, NULL);
+
+  if (commandv (NULL, &err, argv) == -1) {
+    reply_with_perror ("%s", err);
+    return -1;
+  }
+
+  return 0;
+}
diff --git a/generator/actions.ml b/generator/actions.ml
index 25108a2..49c360c 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -13149,6 +13149,28 @@ fails and the C<errno> is set to C<ENODEV>." };
     shortdesc = "walk through the filesystem content";
     longdesc = "Internal function for filesystem_walk." };
 
+  { defaults with
+    name = "setfiles"; added = (1, 33, 43);
+    style = RErr, [String "specfile"; Pathname "path"], [OBool "force"];
+    proc_nr = Some 467;
+    test_excuse = "tests are in the tests/relabel directory";
+    shortdesc = "relabel parts of the filesystem";
+    longdesc = "\
+SELinux relabel parts of the filesystem.
+
+The C<specfile> parameter controls the policy spec file used.
+You have to parse C</etc/selinux/config> to find the correct
+SELinux policy and then pass the spec file, usually:
+C</etc/selinux/> + I<selinuxtype> + C</contexts/files/file_contexts>.
+
+The required C<path> parameter is the top level directory where
+relabelling starts.  Normally you should pass C<path> as C</>
+to relabel the whole guest filesystem.
+
+The optional C<force> boolean controls whether the context
+is reset for customizable files, and also whether the
+user, role and range parts of the file context is changed." };
+
 ]
 
 (* Non-API meta-commands available only in guestfish.
diff --git a/gobject/Makefile.inc b/gobject/Makefile.inc
index 77f1614..0284add 100644
--- a/gobject/Makefile.inc
+++ b/gobject/Makefile.inc
@@ -99,6 +99,7 @@ guestfs_gobject_headers= \
   include/guestfs-gobject/optargs-rsync_in.h \
   include/guestfs-gobject/optargs-rsync_out.h \
   include/guestfs-gobject/optargs-set_e2attrs.h \
+  include/guestfs-gobject/optargs-setfiles.h \
   include/guestfs-gobject/optargs-syslinux.h \
   include/guestfs-gobject/optargs-tar_in.h \
   include/guestfs-gobject/optargs-tar_out.h \
@@ -187,6 +188,7 @@ guestfs_gobject_sources= \
   src/optargs-rsync_in.c \
   src/optargs-rsync_out.c \
   src/optargs-set_e2attrs.c \
+  src/optargs-setfiles.c \
   src/optargs-syslinux.c \
   src/optargs-tar_in.c \
   src/optargs-tar_out.c \
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index f27d46f..5873851 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-466
+467
-- 
2.7.4


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