X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=src%2Finspect.c;h=1b41be58be2904e9d108249b5740f1af712123ae;hp=d19e23b63c76765a57e0a40fb9fe1aa15c6902d4;hb=5d48250224fcb140b7e6e17f36b37deab4e0659b;hpb=ad4cff2625651bda9de25de9aba96bdf213d0a0a

diff --git a/src/inspect.c b/src/inspect.c
index d19e23b..1b41be5 100644
--- a/src/inspect.c
+++ b/src/inspect.c
@@ -1,5 +1,5 @@
 /* libguestfs
- * Copyright (C) 2010 Red Hat Inc.
+ * Copyright (C) 2010-2011 Red Hat Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -23,258 +23,766 @@
 #include <stdint.h>
 #include <inttypes.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <errno.h>
+#include <endian.h>
 
 #include <pcre.h>
-#include <magic.h>
 
+#ifdef HAVE_HIVEX
+#include <hivex.h>
+#endif
+
+#include "c-ctype.h"
 #include "ignore-value.h"
+#include "xstrtol.h"
 
 #include "guestfs.h"
 #include "guestfs-internal.h"
 #include "guestfs-internal-actions.h"
 #include "guestfs_protocol.h"
 
-/* Compile all the regular expressions once when the shared library is
- * loaded.  PCRE is thread safe so we're supposedly OK here if
- * multiple threads call into the libguestfs API functions below
- * simultaneously.
- */
-static pcre *re_file_elf;
-static pcre *re_file_win64;
-static pcre *re_elf_ppc64;
+#if defined(HAVE_HIVEX)
 
-static void compile_regexps (void) __attribute__((constructor));
-static void
-compile_regexps (void)
+/* The main inspection code. */
+char **
+guestfs__inspect_os (guestfs_h *g)
 {
-  const char *err;
-  int offset;
+  /* Remove any information previously stored in the handle. */
+  guestfs___free_inspect_info (g);
+
+  if (guestfs_umount_all (g) == -1)
+    return NULL;
+
+  /* Iterate over all possible devices.  Try to mount each
+   * (read-only).  Examine ones which contain filesystems and add that
+   * information to the handle.
+   */
+  /* Look to see if any devices directly contain filesystems (RHBZ#590167). */
+  char **devices;
+  devices = guestfs_list_devices (g);
+  if (devices == NULL)
+    return NULL;
+
+  size_t i;
+  for (i = 0; devices[i] != NULL; ++i) {
+    if (guestfs___check_for_filesystem_on (g, devices[i], 1, 0) == -1) {
+      guestfs___free_string_list (devices);
+      guestfs___free_inspect_info (g);
+      return NULL;
+    }
+  }
+  guestfs___free_string_list (devices);
 
-#define COMPILE(re,pattern,options)                                     \
-  do {                                                                  \
-    re = pcre_compile ((pattern), (options), &err, &offset, NULL);      \
-    if (re == NULL) {                                                   \
-      ignore_value (write (2, err, strlen (err)));                      \
-      abort ();                                                         \
-    }                                                                   \
-  } while (0)
+  /* Look at all partitions. */
+  char **partitions;
+  partitions = guestfs_list_partitions (g);
+  if (partitions == NULL) {
+    guestfs___free_inspect_info (g);
+    return NULL;
+  }
 
-  COMPILE (re_file_elf,
-           "ELF.*(?:executable|shared object|relocatable), (.+?),", 0);
-  COMPILE (re_elf_ppc64, "64.*PowerPC", 0);
+  for (i = 0; partitions[i] != NULL; ++i) {
+    if (guestfs___check_for_filesystem_on (g, partitions[i], 0, i+1) == -1) {
+      guestfs___free_string_list (partitions);
+      guestfs___free_inspect_info (g);
+      return NULL;
+    }
+  }
+  guestfs___free_string_list (partitions);
+
+  /* Look at all LVs. */
+  if (guestfs___feature_available (g, "lvm2")) {
+    char **lvs;
+    lvs = guestfs_lvs (g);
+    if (lvs == NULL) {
+      guestfs___free_inspect_info (g);
+      return NULL;
+    }
+
+    for (i = 0; lvs[i] != NULL; ++i) {
+      if (guestfs___check_for_filesystem_on (g, lvs[i], 0, 0) == -1) {
+        guestfs___free_string_list (lvs);
+        guestfs___free_inspect_info (g);
+        return NULL;
+      }
+    }
+    guestfs___free_string_list (lvs);
+  }
+
+  /* At this point we have, in the handle, a list of all filesystems
+   * found and data about each one.  Now we assemble the list of
+   * filesystems which are root devices and return that to the user.
+   * Fall through to guestfs__inspect_get_roots to do that.
+   */
+  char **ret = guestfs__inspect_get_roots (g);
+  if (ret == NULL)
+    guestfs___free_inspect_info (g);
+  return ret;
 }
 
-/* Match a regular expression which contains no captures.  Returns
- * true if it matches or false if it doesn't.
- */
 static int
-match (guestfs_h *g, const char *str, const pcre *re)
-{
-  size_t len = strlen (str);
-  int vec[30], r;
-
-  r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
-  if (r == PCRE_ERROR_NOMATCH)
-    return 0;
-  if (r != 1) {
-    /* Internal error -- should not happen. */
-    fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
-             __FILE__, __func__, r, str);
-    return 0;
+compare_strings (const void *vp1, const void *vp2)
+{
+  const char *s1 = * (char * const *) vp1;
+  const char *s2 = * (char * const *) vp2;
+
+  return strcmp (s1, s2);
+}
+
+char **
+guestfs__inspect_get_roots (guestfs_h *g)
+{
+  /* NB. Doesn't matter if g->nr_fses == 0.  We just return an empty
+   * list in this case.
+   */
+
+  size_t i;
+  size_t count = 0;
+  for (i = 0; i < g->nr_fses; ++i)
+    if (g->fses[i].is_root)
+      count++;
+
+  char **ret = calloc (count+1, sizeof (char *));
+  if (ret == NULL) {
+    perrorf (g, "calloc");
+    return NULL;
+  }
+
+  count = 0;
+  for (i = 0; i < g->nr_fses; ++i) {
+    if (g->fses[i].is_root) {
+      ret[count] = safe_strdup (g, g->fses[i].device);
+      count++;
+    }
   }
+  ret[count] = NULL;
+
+  qsort (ret, count, sizeof (char *), compare_strings);
 
-  return 1;
+  return ret;
 }
 
-/* Match a regular expression which contains exactly one capture.  If
- * the string matches, return the capture, otherwise return NULL.  The
- * caller must free the result.
- */
-static char *
-match1 (guestfs_h *g, const char *str, const pcre *re)
+char *
+guestfs__inspect_get_type (guestfs_h *g, const char *root)
 {
-  size_t len = strlen (str);
-  int vec[30], r;
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char *ret;
+  switch (fs->type) {
+  case OS_TYPE_FREEBSD: ret = safe_strdup (g, "freebsd"); break;
+  case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
+  case OS_TYPE_NETBSD: ret = safe_strdup (g, "netbsd"); break;
+  case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
+  case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
+  }
+
+  return ret;
+}
 
-  r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
-  if (r == PCRE_ERROR_NOMATCH)
+char *
+guestfs__inspect_get_arch (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
     return NULL;
-  if (r != 2) {
-    /* Internal error -- should not happen. */
-    fprintf (stderr, "libguestfs: %s: %s: internal error: pcre_exec returned unexpected error code %d when matching against the string \"%s\"\n",
-             __FILE__, __func__, r, str);
+
+  return safe_strdup (g, fs->arch ? : "unknown");
+}
+
+char *
+guestfs__inspect_get_distro (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
     return NULL;
+
+  char *ret;
+  switch (fs->distro) {
+  case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
+  case OS_DISTRO_CENTOS: ret = safe_strdup (g, "centos"); break;
+  case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
+  case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
+  case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
+  case OS_DISTRO_LINUX_MINT: ret = safe_strdup (g, "linuxmint"); break;
+  case OS_DISTRO_MAGEIA: ret = safe_strdup (g, "mageia"); break;
+  case OS_DISTRO_MANDRIVA: ret = safe_strdup (g, "mandriva"); break;
+  case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
+  case OS_DISTRO_OPENSUSE: ret = safe_strdup (g, "opensuse"); break;
+  case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
+  case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
+  case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
+  case OS_DISTRO_SCIENTIFIC_LINUX: ret = safe_strdup (g, "scientificlinux"); break;
+  case OS_DISTRO_SLACKWARE: ret = safe_strdup (g, "slackware"); break;
+  case OS_DISTRO_TTYLINUX: ret = safe_strdup (g, "ttylinux"); break;
+  case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
+  case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
+  case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
   }
 
-  return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
+  return ret;
 }
 
-/* Convert output from 'file' command on ELF files to the canonical
- * architecture string.  Caller must free the result.
- */
-static char *
-canonical_elf_arch (guestfs_h *g, const char *elf_arch)
-{
-  const char *r;
-
-  if (strstr (elf_arch, "Intel 80386"))
-    r = "i386";
-  else if (strstr (elf_arch, "Intel 80486"))
-    r = "i486";
-  else if (strstr (elf_arch, "x86-64"))
-    r = "x86_64";
-  else if (strstr (elf_arch, "AMD x86-64"))
-    r = "x86_64";
-  else if (strstr (elf_arch, "SPARC32"))
-    r = "sparc";
-  else if (strstr (elf_arch, "SPARC V9"))
-    r = "sparc64";
-  else if (strstr (elf_arch, "IA-64"))
-    r = "ia64";
-  else if (match (g, elf_arch, re_elf_ppc64))
-    r = "ppc64";
-  else if (strstr (elf_arch, "PowerPC"))
-    r = "ppc";
-  else
-    r = elf_arch;
-
-  char *ret = safe_strdup (g, r);
+int
+guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return -1;
+
+  return fs->major_version;
+}
+
+int
+guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return -1;
+
+  return fs->minor_version;
+}
+
+char *
+guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  return safe_strdup (g, fs->product_name ? : "unknown");
+}
+
+char *
+guestfs__inspect_get_product_variant (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  return safe_strdup (g, fs->product_variant ? : "unknown");
+}
+
+char *
+guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  if (!fs->windows_systemroot) {
+    error (g, _("not a Windows guest, or systemroot could not be determined"));
+    return NULL;
+  }
+
+  return safe_strdup (g, fs->windows_systemroot);
+}
+
+char *
+guestfs__inspect_get_windows_current_control_set (guestfs_h *g,
+                                                  const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  if (!fs->windows_current_control_set) {
+    error (g, _("not a Windows guest, or CurrentControlSet could not be determined"));
+    return NULL;
+  }
+
+  return safe_strdup (g, fs->windows_current_control_set);
+}
+
+char *
+guestfs__inspect_get_format (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char *ret;
+  switch (fs->format) {
+  case OS_FORMAT_INSTALLED: ret = safe_strdup (g, "installed"); break;
+  case OS_FORMAT_INSTALLER: ret = safe_strdup (g, "installer"); break;
+  case OS_FORMAT_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
+  }
+
   return ret;
 }
 
-static int
-is_regular_file (const char *filename)
+int
+guestfs__inspect_is_live (guestfs_h *g, const char *root)
 {
-  struct stat statbuf;
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return -1;
 
-  return lstat (filename, &statbuf) == 0 && S_ISREG (statbuf.st_mode);
+  return fs->is_live_disk;
 }
 
-/* Download and uncompress the cpio file to find binaries within.
- * Notes:
- * (1) Two lists must be identical.
- * (2) Implicit limit of 31 bytes for length of each element (see code
- * below).
- */
-#define INITRD_BINARIES1 "bin/ls bin/rm bin/modprobe sbin/modprobe bin/sh bin/bash bin/dash bin/nash"
-#define INITRD_BINARIES2 {"bin/ls", "bin/rm", "bin/modprobe", "sbin/modprobe", "bin/sh", "bin/bash", "bin/dash", "bin/nash"}
-
-static char *
-cpio_arch (guestfs_h *g, const char *file, const char *path)
-{
-  char *ret = NULL;
-
-  const char *method;
-  if (strstr (file, "gzip"))
-    method = "zcat";
-  else if (strstr (file, "bzip2"))
-    method = "bzcat";
-  else
-    method = "cat";
-
-  char dir[] = "/tmp/initrd.XXXXXX";
-#define dir_len (sizeof dir)
-  if (mkdtemp (dir) == NULL) {
-    perrorf (g, "mkdtemp");
-    goto out;
+int
+guestfs__inspect_is_netinst (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return -1;
+
+  return fs->is_netinst_disk;
+}
+
+int
+guestfs__inspect_is_multipart (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return -1;
+
+  return fs->is_multipart_disk;
+}
+
+char **
+guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char **ret;
+
+  /* If no fstab information (Windows) return just the root. */
+  if (fs->nr_fstab == 0) {
+    ret = calloc (3, sizeof (char *));
+    ret[0] = safe_strdup (g, "/");
+    ret[1] = safe_strdup (g, root);
+    ret[2] = NULL;
+    return ret;
   }
 
-  char dir_initrd[dir_len + 16];
-  snprintf (dir_initrd, dir_len + 16, "%s/initrd", dir);
-  if (guestfs_download (g, path, dir_initrd) == -1)
-    goto out;
-
-  char cmd[dir_len + 256];
-  snprintf (cmd, dir_len + 256,
-            "cd %s && %s initrd | cpio --quiet -id " INITRD_BINARIES1,
-            dir, method);
-  int r = system (cmd);
-  if (r == -1 || WEXITSTATUS (r) != 0) {
-    perrorf (g, "cpio command failed");
-    goto out;
+#define CRITERION fs->fstab[i].mountpoint[0] == '/'
+  size_t i, count = 0;
+  for (i = 0; i < fs->nr_fstab; ++i)
+    if (CRITERION)
+      count++;
+
+  /* Hashtables have 2N+1 entries. */
+  ret = calloc (2*count+1, sizeof (char *));
+  if (ret == NULL) {
+    perrorf (g, "calloc");
+    return NULL;
+  }
+
+  count = 0;
+  for (i = 0; i < fs->nr_fstab; ++i)
+    if (CRITERION) {
+      ret[2*count] = safe_strdup (g, fs->fstab[i].mountpoint);
+      ret[2*count+1] = safe_strdup (g, fs->fstab[i].device);
+      count++;
+    }
+#undef CRITERION
+
+  return ret;
+}
+
+char **
+guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char **ret;
+
+  /* If no fstab information (Windows) return just the root. */
+  if (fs->nr_fstab == 0) {
+    ret = calloc (2, sizeof (char *));
+    ret[0] = safe_strdup (g, root);
+    ret[1] = NULL;
+    return ret;
+  }
+
+  ret = calloc (fs->nr_fstab + 1, sizeof (char *));
+  if (ret == NULL) {
+    perrorf (g, "calloc");
+    return NULL;
   }
 
-  char bin[dir_len + 32];
-  const char *bins[] = INITRD_BINARIES2;
   size_t i;
-  for (i = 0; i < sizeof bins / sizeof bins[0]; ++i) {
-    snprintf (bin, dir_len + 32, "%s/%s", dir, bins[i]);
+  for (i = 0; i < fs->nr_fstab; ++i)
+    ret[i] = safe_strdup (g, fs->fstab[i].device);
 
-    if (is_regular_file (bin)) {
-      int flags = g->verbose ? MAGIC_DEBUG : 0;
-      flags |= MAGIC_ERROR | MAGIC_RAW;
+  return ret;
+}
 
-      magic_t m = magic_open (flags);
-      if (m == NULL) {
-        perrorf (g, "magic_open");
-        goto out;
-      }
+char **
+guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root)
+{
+  char **ret;
+  size_t i, count;
+  struct inspect_fs *fs;
 
-      if (magic_load (m, NULL) == -1) {
-        perrorf (g, "magic_load: default magic database file");
-        magic_close (m);
-        goto out;
-      }
+  fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
 
-      const char *line = magic_file (m, bin);
-      if (line == NULL) {
-        perrorf (g, "magic_file: %s", bin);
-        magic_close (m);
-        goto out;
-      }
+  /* If no drive mappings, return an empty hashtable. */
+  if (!fs->drive_mappings)
+    count = 0;
+  else {
+    for (count = 0; fs->drive_mappings[count] != NULL; count++)
+      ;
+  }
 
-      char *elf_arch;
-      if ((elf_arch = match1 (g, line, re_file_elf)) != NULL) {
-        ret = canonical_elf_arch (g, elf_arch);
-        free (elf_arch);
-        magic_close (m);
-        goto out;
-      }
-      magic_close (m);
-    }
+  ret = calloc (count+1, sizeof (char *));
+  if (ret == NULL) {
+    perrorf (g, "calloc");
+    return NULL;
   }
-  error (g, "file_architecture: could not determine architecture of cpio archive");
 
- out:
-  /* Free up the temporary directory.  Note the directory name cannot
-   * contain shell meta-characters because of the way it was
-   * constructed above.
+  /* We need to make a deep copy of the hashtable since the caller
+   * will free it.
    */
-  snprintf (cmd, dir_len + 256, "rm -rf %s", dir);
-  ignore_value (system (cmd));
+  for (i = 0; i < count; ++i)
+    ret[i] = safe_strdup (g, fs->drive_mappings[i]);
+
+  ret[count] = NULL;
+
+  return ret;
+}
+
+char *
+guestfs__inspect_get_package_format (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char *ret;
+  switch (fs->package_format) {
+  case OS_PACKAGE_FORMAT_RPM: ret = safe_strdup (g, "rpm"); break;
+  case OS_PACKAGE_FORMAT_DEB: ret = safe_strdup (g, "deb"); break;
+  case OS_PACKAGE_FORMAT_PACMAN: ret = safe_strdup (g, "pacman"); break;
+  case OS_PACKAGE_FORMAT_EBUILD: ret = safe_strdup (g, "ebuild"); break;
+  case OS_PACKAGE_FORMAT_PISI: ret = safe_strdup (g, "pisi"); break;
+  case OS_PACKAGE_FORMAT_PKGSRC: ret = safe_strdup (g, "pkgsrc"); break;
+  case OS_PACKAGE_FORMAT_UNKNOWN:
+  default:
+    ret = safe_strdup (g, "unknown");
+    break;
+  }
 
   return ret;
-#undef dir_len
 }
 
 char *
-guestfs__file_architecture (guestfs_h *g, const char *path)
+guestfs__inspect_get_package_management (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  char *ret;
+  switch (fs->package_management) {
+  case OS_PACKAGE_MANAGEMENT_YUM: ret = safe_strdup (g, "yum"); break;
+  case OS_PACKAGE_MANAGEMENT_UP2DATE: ret = safe_strdup (g, "up2date"); break;
+  case OS_PACKAGE_MANAGEMENT_APT: ret = safe_strdup (g, "apt"); break;
+  case OS_PACKAGE_MANAGEMENT_PACMAN: ret = safe_strdup (g, "pacman"); break;
+  case OS_PACKAGE_MANAGEMENT_PORTAGE: ret = safe_strdup (g, "portage"); break;
+  case OS_PACKAGE_MANAGEMENT_PISI: ret = safe_strdup (g, "pisi"); break;
+  case OS_PACKAGE_MANAGEMENT_URPMI: ret = safe_strdup (g, "urpmi"); break;
+  case OS_PACKAGE_MANAGEMENT_ZYPPER: ret = safe_strdup (g, "zypper"); break;
+  case OS_PACKAGE_MANAGEMENT_UNKNOWN:
+  default:
+    ret = safe_strdup (g, "unknown");
+    break;
+  }
+
+  return ret;
+}
+
+char *
+guestfs__inspect_get_hostname (guestfs_h *g, const char *root)
+{
+  struct inspect_fs *fs = guestfs___search_for_root (g, root);
+  if (!fs)
+    return NULL;
+
+  return safe_strdup (g, fs->hostname ? : "unknown");
+}
+
+#else /* no hivex at compile time */
+
+/* XXX These functions should be in an optgroup. */
+
+#define NOT_IMPL(r)                                                     \
+  error (g, _("inspection API not available since this version of libguestfs was compiled without the hivex library")); \
+  return r
+
+char **
+guestfs__inspect_os (guestfs_h *g)
+{
+  NOT_IMPL(NULL);
+}
+
+char **
+guestfs__inspect_get_roots (guestfs_h *g)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_type (guestfs_h *g, const char *root)
 {
-  char *file = NULL;
-  char *elf_arch = NULL;
-  char *ret = NULL;
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_arch (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_distro (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
 
-  /* Get the output of the "file" command.  Note that because this
-   * runs in the daemon, LANG=C so it's in English.
+int
+guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(-1);
+}
+
+int
+guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(-1);
+}
+
+char *
+guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_product_variant (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_windows_current_control_set (guestfs_h *g,
+                                                  const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char **
+guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char **
+guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char **
+guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_package_format (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_package_management (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_hostname (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+char *
+guestfs__inspect_get_format (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(NULL);
+}
+
+int
+guestfs__inspect_is_live (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(-1);
+}
+
+int
+guestfs__inspect_is_netinst (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(-1);
+}
+
+int
+guestfs__inspect_is_multipart (guestfs_h *g, const char *root)
+{
+  NOT_IMPL(-1);
+}
+
+#endif /* no hivex at compile time */
+
+void
+guestfs___free_inspect_info (guestfs_h *g)
+{
+  size_t i;
+  for (i = 0; i < g->nr_fses; ++i) {
+    free (g->fses[i].device);
+    free (g->fses[i].product_name);
+    free (g->fses[i].product_variant);
+    free (g->fses[i].arch);
+    free (g->fses[i].hostname);
+    free (g->fses[i].windows_systemroot);
+    free (g->fses[i].windows_current_control_set);
+    size_t j;
+    for (j = 0; j < g->fses[i].nr_fstab; ++j) {
+      free (g->fses[i].fstab[j].device);
+      free (g->fses[i].fstab[j].mountpoint);
+    }
+    free (g->fses[i].fstab);
+    if (g->fses[i].drive_mappings)
+      guestfs___free_string_list (g->fses[i].drive_mappings);
+  }
+  free (g->fses);
+  g->nr_fses = 0;
+  g->fses = NULL;
+}
+
+/* In the Perl code this is a public function. */
+int
+guestfs___feature_available (guestfs_h *g, const char *feature)
+{
+  /* If there's an error we should ignore it, so to do that we have to
+   * temporarily replace the error handler with a null one.
    */
-  file = guestfs_file (g, path);
-  if (file == NULL)
+  guestfs_error_handler_cb old_error_cb = g->error_cb;
+  g->error_cb = NULL;
+
+  const char *groups[] = { feature, NULL };
+  int r = guestfs_available (g, (char * const *) groups);
+
+  g->error_cb = old_error_cb;
+
+  return r == 0 ? 1 : 0;
+}
+
+/* Download a guest file to a local temporary file.  The file is
+ * cached in the temporary directory, and is not downloaded again.
+ *
+ * The name of the temporary (downloaded) file is returned.  The
+ * caller must free the pointer, but does *not* need to delete the
+ * temporary file.  It will be deleted when the handle is closed.
+ *
+ * Refuse to download the guest file if it is larger than max_size.
+ * On this and other errors, NULL is returned.
+ *
+ * There is actually one cache per 'struct inspect_fs *' in order
+ * to handle the case of multiple roots.
+ */
+char *
+guestfs___download_to_tmp (guestfs_h *g, struct inspect_fs *fs,
+                           const char *filename,
+                           const char *basename, int64_t max_size)
+{
+  char *r;
+  int fd;
+  char devfd[32];
+  int64_t size;
+
+  /* Make the basename unique by prefixing it with the fs number. */
+  if (asprintf (&r, "%s/%td-%s", g->tmpdir, fs - g->fses, basename) == -1) {
+    perrorf (g, "asprintf");
+    return NULL;
+  }
+
+  /* If the file has already been downloaded, return. */
+  if (access (r, R_OK) == 0)
+    return r;
+
+  /* Check size of remote file. */
+  size = guestfs_filesize (g, filename);
+  if (size == -1)
+    /* guestfs_filesize failed and has already set error in handle */
+    goto error;
+  if (size > max_size) {
+    error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"),
+           filename, size);
+    goto error;
+  }
+
+  fd = open (r, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY, 0600);
+  if (fd == -1) {
+    perrorf (g, "open: %s", r);
+    goto error;
+  }
+
+  snprintf (devfd, sizeof devfd, "/dev/fd/%d", fd);
+
+  if (guestfs_download (g, filename, devfd) == -1) {
+    unlink (r);
+    close (fd);
+    goto error;
+  }
+
+  if (close (fd) == -1) {
+    perrorf (g, "close: %s", r);
+    unlink (r);
+    goto error;
+  }
+
+  return r;
+
+ error:
+  free (r);
+  return NULL;
+}
+
+struct inspect_fs *
+guestfs___search_for_root (guestfs_h *g, const char *root)
+{
+  if (g->nr_fses == 0) {
+    error (g, _("no inspection data: call guestfs_inspect_os first"));
     return NULL;
+  }
+
+  size_t i;
+  struct inspect_fs *fs;
+  for (i = 0; i < g->nr_fses; ++i) {
+    fs = &g->fses[i];
+    if (fs->is_root && STREQ (root, fs->device))
+      return fs;
+  }
 
-  if ((elf_arch = match1 (g, file, re_file_elf)) != NULL)
-    ret = canonical_elf_arch (g, elf_arch);
-  else if (strstr (file, "PE32 executable"))
-    ret = safe_strdup (g, "i386");
-  else if (strstr (file, "PE32+ executable"))
-    ret = safe_strdup (g, "x86_64");
-  else if (strstr (file, "cpio archive"))
-    ret = cpio_arch (g, file, path);
-  else
-    error (g, "file_architecture: unknown architecture: %s", path);
-
-  free (file);
-  free (elf_arch);
-  return ret;                   /* caller frees */
+  error (g, _("%s: root device not found: only call this function with a root device previously returned by guestfs_inspect_os"),
+         root);
+  return NULL;
 }