From 8ab4bf975c58806c56a3689df3f1757f5738b1c8 Mon Sep 17 00:00:00 2001

From: "Richard W.M. Jones" <rjones@redhat.com>

Date: Thu, 18 Jul 2013 18:31:53 +0100

Subject: [PATCH] RHEL 7: Remove 9p APIs from RHEL (RHBZ#921710).

---

 Makefile.am               |   2 +-

 daemon/9p.c               | 224 --------------------------------------

 daemon/Makefile.am        |   1 -

 docs/C_SOURCE_FILES       |   1 -

 generator/actions_core.ml |  21 ----

 generator/proc_nr.ml      |   2 -

 gobject/Makefile.inc      |   2 -

 po/POTFILES               |   2 -

 8 files changed, 1 insertion(+), 254 deletions(-)

 delete mode 100644 daemon/9p.c

diff --git a/Makefile.am b/Makefile.am

index 0067d7b7b..e9351eadc 100644

--- a/Makefile.am

+++ b/Makefile.am

@@ -78,7 +78,7 @@ SUBDIRS += tests/xfs

 SUBDIRS += tests/charsets

 SUBDIRS += tests/xml

 SUBDIRS += tests/mount-local

-SUBDIRS += tests/9p

+#SUBDIRS += tests/9p

 SUBDIRS += tests/rsync

 SUBDIRS += tests/bigdirs

 SUBDIRS += tests/disk-labels

diff --git a/daemon/9p.c b/daemon/9p.c

deleted file mode 100644

index 55644249d..000000000

--- a/daemon/9p.c

+++ /dev/null

@@ -1,224 +0,0 @@

-/* libguestfs - the guestfsd daemon

- * Copyright (C) 2011 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 <unistd.h>

-#include <limits.h>

-#include <errno.h>

-#include <sys/types.h>

-#include <sys/stat.h>

-#include <dirent.h>

-#include <fcntl.h>

-

-#include "daemon.h"

-#include "actions.h"

-

-#define BUS_PATH "/sys/bus/virtio/drivers/9pnet_virtio"

-

-static char *read_whole_file (const char *filename);

-

-/* https://bugzilla.redhat.com/show_bug.cgi?id=714981#c1 */

-char **

-do_list_9p (void)

-{

-  CLEANUP_FREE_STRINGSBUF DECLARE_STRINGSBUF (r);

-

-  DIR *dir;

-

-  dir = opendir (BUS_PATH);

-  if (!dir) {

-    perror ("opendir: " BUS_PATH);

-    if (errno != ENOENT) {

-      reply_with_perror ("opendir: " BUS_PATH);

-      return NULL;

-    }

-

-    /* If this directory doesn't exist, it probably means that

-     * the virtio driver isn't loaded.  Don't return an error

-     * in this case, but return an empty list.

-     */

-    if (end_stringsbuf (&r) == -1)

-      return NULL;

-

-    return take_stringsbuf (&r);

-  }

-

-  while (1) {

-    struct dirent *d;

-

-    errno = 0;

-    d = readdir (dir);

-    if (d == NULL) break;

-

-    if (STRPREFIX (d->d_name, "virtio")) {

-      CLEANUP_FREE char *mount_tag_path = NULL;

-      if (asprintf (&mount_tag_path, BUS_PATH "/%s/mount_tag",

-                    d->d_name) == -1) {

-        reply_with_perror ("asprintf");

-        closedir (dir);

-        return NULL;

-      }

-

-      /* A bit unclear, but it looks like the virtio transport allows

-       * the mount tag length to be unlimited (or up to 65536 bytes).

-       * See: linux/include/linux/virtio_9p.h

-       */

-      CLEANUP_FREE char *mount_tag = read_whole_file (mount_tag_path);

-      if (mount_tag == 0)

-        continue;

-

-      if (add_string (&r, mount_tag) == -1) {

-        closedir (dir);

-        return NULL;

-      }

-    }

-  }

-

-  /* Check readdir didn't fail */

-  if (errno != 0) {

-    reply_with_perror ("readdir: /sys/block");

-    closedir (dir);

-    return NULL;

-  }

-

-  /* Close the directory handle */

-  if (closedir (dir) == -1) {

-    reply_with_perror ("closedir: /sys/block");

-    return NULL;

-  }

-

-  /* Sort the tags. */

-  if (r.size > 0)

-    sort_strings (r.argv, r.size);

-

-  /* NULL terminate the list */

-  if (end_stringsbuf (&r) == -1)

-    return NULL;

-

-  return take_stringsbuf (&r);

-}

-

-/* Read whole file into dynamically allocated array.  If there is an

- * error, DON'T call reply_with_perror, just return NULL.  Returns a

- * \0-terminated string.

- */

-static char *

-read_whole_file (const char *filename)

-{

-  char *r = NULL;

-  size_t alloc = 0, size = 0;

-  int fd;

-

-  fd = open (filename, O_RDONLY|O_CLOEXEC);

-  if (fd == -1) {

-    perror (filename);

-    return NULL;

-  }

-

-  while (1) {

-    alloc += 256;

-    char *r2 = realloc (r, alloc);

-    if (r2 == NULL) {

-      perror ("realloc");

-      free (r);

-      close (fd);

-      return NULL;

-    }

-    r = r2;

-

-    /* The '- 1' in the size calculation ensures there is space below

-     * to add \0 to the end of the input.

-     */

-    ssize_t n = read (fd, r + size, alloc - size - 1);

-    if (n == -1) {

-      fprintf (stderr, "read: %s: %m\n", filename);

-      free (r);

-      close (fd);

-      return NULL;

-    }

-    if (n == 0)

-      break;

-    size += n;

-  }

-

-  if (close (fd) == -1) {

-    fprintf (stderr, "close: %s: %m\n", filename);

-    free (r);

-    return NULL;

-  }

-

-  r[size] = '\0';

-

-  return r;

-}

-

-/* Takes optional arguments, consult optargs_bitmask. */

-int

-do_mount_9p (const char *mount_tag, const char *mountpoint, const char *options)

-{

-  CLEANUP_FREE char *mp = NULL, *opts = NULL, *err = NULL;

-  struct stat statbuf;

-  int r;

-

-  ABS_PATH (mountpoint, 0, return -1);

-

-  mp = sysroot_path (mountpoint);

-  if (!mp) {

-    reply_with_perror ("malloc");

-    return -1;

-  }

-

-  /* Check the mountpoint exists and is a directory. */

-  if (stat (mp, &statbuf) == -1) {

-    reply_with_perror ("%s", mountpoint);

-    return -1;

-  }

-  if (!S_ISDIR (statbuf.st_mode)) {

-    reply_with_perror ("%s: mount point is not a directory", mountpoint);

-    return -1;

-  }

-

-  /* Add trans=virtio to the options. */

-  if ((optargs_bitmask & GUESTFS_MOUNT_9P_OPTIONS_BITMASK) &&

-      STRNEQ (options, "")) {

-    if (asprintf (&opts, "trans=virtio,%s", options) == -1) {

-      reply_with_perror ("asprintf");

-      return -1;

-    }

-  }

-  else {

-    opts = strdup ("trans=virtio");

-    if (opts == NULL) {

-      reply_with_perror ("strdup");

-      return -1;

-    }

-  }

-

-  r = command (NULL, &err,

-               "mount", "-o", opts, "-t", "9p", mount_tag, mp, NULL);

-  if (r == -1) {

-    reply_with_error ("%s on %s: %s", mount_tag, mountpoint, err);

-    return -1;

-  }

-

-  return 0;

-}

diff --git a/daemon/Makefile.am b/daemon/Makefile.am

index 5d1c222db..a9b40be25 100644

--- a/daemon/Makefile.am

+++ b/daemon/Makefile.am

@@ -76,7 +76,6 @@ guestfsd_SOURCES = \

 	../common/protocol/guestfs_protocol.h \

 	../common/utils/cleanups.h \

 	../common/utils/guestfs-utils.h \

-	9p.c \

 	acl.c \

 	actions.h \

 	available.c \

diff --git a/docs/C_SOURCE_FILES b/docs/C_SOURCE_FILES

index 7f1c60b30..f45e7124d 100644

--- a/docs/C_SOURCE_FILES

+++ b/docs/C_SOURCE_FILES

@@ -71,7 +71,6 @@ common/windows/windows.h

 customize/crypt-c.c

 customize/dummy.c

 customize/perl_edit-c.c

-daemon/9p.c

 daemon/acl.c

 daemon/actions.h

 daemon/augeas.c

diff --git a/generator/actions_core.ml b/generator/actions_core.ml

index 7b6568b90..f4f0d0ab6 100644

--- a/generator/actions_core.ml

+++ b/generator/actions_core.ml

@@ -6167,27 +6167,6 @@ This returns true iff the device exists and contains all zero bytes.

 Note that for large devices this can take a long time to run." };

-  { defaults with

-    name = "list_9p"; added = (1, 11, 12);

-    style = RStringList (RPlainString, "mounttags"), [], [];

-    shortdesc = "list 9p filesystems";

-    longdesc = "\

-List all 9p filesystems attached to the guest.  A list of

-mount tags is returned." };

-

-  { defaults with

-    name = "mount_9p"; added = (1, 11, 12);

-    style = RErr, [String (PlainString, "mounttag"); String (PlainString, "mountpoint")], [OString "options"];

-    camel_name = "Mount9P";

-    shortdesc = "mount 9p filesystem";

-    longdesc = "\

-Mount the virtio-9p filesystem with the tag C<mounttag> on the

-directory C<mountpoint>.

-

-If required, C<trans=virtio> will be automatically added to the options.

-Any other options required can be passed in the optional C<options>

-parameter." };

-

   { defaults with

     name = "list_dm_devices"; added = (1, 11, 15);

     style = RStringList (RDevice, "devices"), [], [];

diff --git a/generator/proc_nr.ml b/generator/proc_nr.ml

index efa8c5d21..3fd365d28 100644

--- a/generator/proc_nr.ml

+++ b/generator/proc_nr.ml

@@ -295,8 +295,6 @@ let proc_nr = [

 282, "internal_autosync";

 283, "is_zero";

 284, "is_zero_device";

-285, "list_9p";

-286, "mount_9p";

 287, "list_dm_devices";

 288, "ntfsresize";

 289, "btrfs_filesystem_resize";

diff --git a/gobject/Makefile.inc b/gobject/Makefile.inc

index 067f861a9..7afe83c59 100644

--- a/gobject/Makefile.inc

+++ b/gobject/Makefile.inc

@@ -93,7 +93,6 @@ guestfs_gobject_headers= \

   include/guestfs-gobject/optargs-mksquashfs.h \

   include/guestfs-gobject/optargs-mkswap.h \

   include/guestfs-gobject/optargs-mktemp.h \

-  include/guestfs-gobject/optargs-mount_9p.h \

   include/guestfs-gobject/optargs-mount_local.h \

   include/guestfs-gobject/optargs-ntfsclone_out.h \

   include/guestfs-gobject/optargs-ntfsfix.h \

@@ -186,7 +185,6 @@ guestfs_gobject_sources= \

   src/optargs-mksquashfs.c \

   src/optargs-mkswap.c \

   src/optargs-mktemp.c \

-  src/optargs-mount_9p.c \

   src/optargs-mount_local.c \

   src/optargs-ntfsclone_out.c \

   src/optargs-ntfsfix.c \

diff --git a/po/POTFILES b/po/POTFILES

index 79f4b8c56..b99333d0d 100644

--- a/po/POTFILES

+++ b/po/POTFILES

@@ -58,7 +58,6 @@ customize/crypt-c.c

 customize/dummy.c

 customize/perl_edit-c.c

 customize/test-password.pl

-daemon/9p.c

 daemon/acl.c

 daemon/augeas.c

 daemon/available.c

@@ -291,7 +290,6 @@ gobject/src/optargs-mkfs_btrfs.c

 gobject/src/optargs-mksquashfs.c

 gobject/src/optargs-mkswap.c

 gobject/src/optargs-mktemp.c

-gobject/src/optargs-mount_9p.c

 gobject/src/optargs-mount_local.c

 gobject/src/optargs-ntfsclone_out.c

 gobject/src/optargs-ntfsfix.c

-- 

2.21.0