--- /dev/null
+/* libguestfs
+ * Copyright (C) 2010 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
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; 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 <stdint.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_PCRE
+#include <pcre.h>
+#endif
+#ifdef HAVE_LIBMAGIC
+#include <magic.h>
+#endif
+
+#include "ignore-value.h"
+
+#include "guestfs.h"
+#include "guestfs-internal.h"
+#include "guestfs-internal-actions.h"
+#include "guestfs_protocol.h"
+
+#if defined(HAVE_PCRE) && defined(HAVE_LIBMAGIC)
+
+static pcre *re_file_elf;
+static pcre *re_elf_ppc64;
+
+static void compile_regexps (void) __attribute__((constructor));
+static void free_regexps (void) __attribute__((destructor));
+
+static void
+compile_regexps (void)
+{
+ const char *err;
+ int offset;
+
+#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)
+
+ COMPILE (re_file_elf,
+ "ELF.*(?:executable|shared object|relocatable), (.+?),", 0);
+ COMPILE (re_elf_ppc64, "64.*PowerPC", 0);
+}
+
+static void
+free_regexps (void)
+{
+ pcre_free (re_file_elf);
+ pcre_free (re_elf_ppc64);
+}
+
+/* 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);
+ return ret;
+}
+
+static int
+is_regular_file (const char *filename)
+{
+ struct stat statbuf;
+
+ return lstat (filename, &statbuf) == 0 && S_ISREG (statbuf.st_mode);
+}
+
+/* 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)
+{
+ TMP_TEMPLATE_ON_STACK (dir);
+#define dir_len (strlen (dir))
+#define initrd_len (dir_len + 16)
+ char initrd[initrd_len];
+#define cmd_len (dir_len + 256)
+ char cmd[cmd_len];
+#define bin_len (dir_len + 32)
+ char bin[bin_len];
+
+ char *ret = NULL;
+
+ const char *method;
+ if (strstr (file, "gzip"))
+ method = "zcat";
+ else if (strstr (file, "bzip2"))
+ method = "bzcat";
+ else
+ method = "cat";
+
+ if (mkdtemp (dir) == NULL) {
+ perrorf (g, "mkdtemp");
+ goto out;
+ }
+
+ snprintf (initrd, initrd_len, "%s/initrd", dir);
+ if (guestfs_download (g, path, initrd) == -1)
+ goto out;
+
+ snprintf (cmd, cmd_len,
+ "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;
+ }
+
+ const char *bins[] = INITRD_BINARIES2;
+ size_t i;
+ for (i = 0; i < sizeof bins / sizeof bins[0]; ++i) {
+ snprintf (bin, bin_len, "%s/%s", dir, bins[i]);
+
+ if (is_regular_file (bin)) {
+ int flags = g->verbose ? MAGIC_DEBUG : 0;
+ flags |= MAGIC_ERROR | MAGIC_RAW;
+
+ magic_t m = magic_open (flags);
+ if (m == NULL) {
+ perrorf (g, "magic_open");
+ goto out;
+ }
+
+ if (magic_load (m, NULL) == -1) {
+ perrorf (g, "magic_load: default magic database file");
+ magic_close (m);
+ goto out;
+ }
+
+ const char *line = magic_file (m, bin);
+ if (line == NULL) {
+ perrorf (g, "magic_file: %s", bin);
+ magic_close (m);
+ goto out;
+ }
+
+ 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);
+ }
+ }
+ 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.
+ */
+ snprintf (cmd, cmd_len, "rm -rf %s", dir);
+ ignore_value (system (cmd));
+
+ return ret;
+#undef dir_len
+#undef initrd_len
+#undef cmd_len
+#undef bin_len
+}
+
+char *
+guestfs__file_architecture (guestfs_h *g, const char *path)
+{
+ char *file = NULL;
+ char *elf_arch = NULL;
+ char *ret = NULL;
+
+ /* Get the output of the "file" command. Note that because this
+ * runs in the daemon, LANG=C so it's in English.
+ */
+ file = guestfs_file (g, path);
+ if (file == NULL)
+ return NULL;
+
+ 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 */
+}
+
+#else /* no PCRE or libmagic at compile time */
+
+/* XXX Should be an optgroup. */
+
+#define NOT_IMPL(r) \
+ error (g, _("file-architecture API not available since this version of libguestfs was compiled without PCRE or libmagic libraries")); \
+ return r
+
+char *
+guestfs__file_architecture (guestfs_h *g, const char *path)
+{
+ NOT_IMPL(NULL);
+}
+
+#endif /* no PCRE or libmagic at compile time */
#include <string.h>
#include <sys/stat.h>
+#ifdef HAVE_PCRE
#include <pcre.h>
-#include <magic.h>
+#endif
+
+#ifdef HAVE_HIVEX
#include <hivex.h>
+#endif
#include "c-ctype.h"
#include "ignore-value.h"
#include "guestfs-internal-actions.h"
#include "guestfs_protocol.h"
+#if defined(HAVE_PCRE) && defined(HAVE_HIVEX)
+
/* 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_elf_ppc64;
static pcre *re_fedora;
static pcre *re_rhel_old;
static pcre *re_rhel;
} \
} while (0)
- COMPILE (re_file_elf,
- "ELF.*(?:executable|shared object|relocatable), (.+?),", 0);
- COMPILE (re_elf_ppc64, "64.*PowerPC", 0);
COMPILE (re_fedora, "Fedora release (\\d+)", 0);
COMPILE (re_rhel_old,
"(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+).*Update (\\d+)", 0);
static void
free_regexps (void)
{
- pcre_free (re_file_elf);
- pcre_free (re_elf_ppc64);
pcre_free (re_fedora);
pcre_free (re_rhel_old);
pcre_free (re_rhel);
pcre_free (re_windows_version);
}
-/* 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;
- }
-
- return 1;
-}
-
-/* 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)
-{
- 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 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 NULL;
- }
-
- return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
-}
-
-/* Match a regular expression which contains exactly two captures. */
-static int
-match2 (guestfs_h *g, const char *str, const pcre *re, char **ret1, char **ret2)
-{
- size_t len = strlen (str);
- int vec[30], r;
-
- r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
- if (r == PCRE_ERROR_NOMATCH)
- return 0;
- if (r != 3) {
- /* 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;
- }
-
- *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
- *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
-
- return 1;
-}
-
-/* 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);
- return ret;
-}
-
-static int
-is_regular_file (const char *filename)
-{
- struct stat statbuf;
-
- return lstat (filename, &statbuf) == 0 && S_ISREG (statbuf.st_mode);
-}
-
-/* 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)
-{
- TMP_TEMPLATE_ON_STACK (dir);
-#define dir_len (strlen (dir))
-#define initrd_len (dir_len + 16)
- char initrd[initrd_len];
-#define cmd_len (dir_len + 256)
- char cmd[cmd_len];
-#define bin_len (dir_len + 32)
- char bin[bin_len];
-
- char *ret = NULL;
-
- const char *method;
- if (strstr (file, "gzip"))
- method = "zcat";
- else if (strstr (file, "bzip2"))
- method = "bzcat";
- else
- method = "cat";
-
- if (mkdtemp (dir) == NULL) {
- perrorf (g, "mkdtemp");
- goto out;
- }
-
- snprintf (initrd, initrd_len, "%s/initrd", dir);
- if (guestfs_download (g, path, initrd) == -1)
- goto out;
-
- snprintf (cmd, cmd_len,
- "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;
- }
-
- const char *bins[] = INITRD_BINARIES2;
- size_t i;
- for (i = 0; i < sizeof bins / sizeof bins[0]; ++i) {
- snprintf (bin, bin_len, "%s/%s", dir, bins[i]);
-
- if (is_regular_file (bin)) {
- int flags = g->verbose ? MAGIC_DEBUG : 0;
- flags |= MAGIC_ERROR | MAGIC_RAW;
-
- magic_t m = magic_open (flags);
- if (m == NULL) {
- perrorf (g, "magic_open");
- goto out;
- }
-
- if (magic_load (m, NULL) == -1) {
- perrorf (g, "magic_load: default magic database file");
- magic_close (m);
- goto out;
- }
-
- const char *line = magic_file (m, bin);
- if (line == NULL) {
- perrorf (g, "magic_file: %s", bin);
- magic_close (m);
- goto out;
- }
-
- 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);
- }
- }
- 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.
- */
- snprintf (cmd, cmd_len, "rm -rf %s", dir);
- ignore_value (system (cmd));
-
- return ret;
-#undef dir_len
-#undef initrd_len
-#undef cmd_len
-#undef bin_len
-}
-
-char *
-guestfs__file_architecture (guestfs_h *g, const char *path)
-{
- char *file = NULL;
- char *elf_arch = NULL;
- char *ret = NULL;
-
- /* Get the output of the "file" command. Note that because this
- * runs in the daemon, LANG=C so it's in English.
- */
- file = guestfs_file (g, path);
- if (file == NULL)
- return NULL;
-
- 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 */
-}
-
/* The main inspection code. */
-static int feature_available (guestfs_h *g, const char *feature);
-static void free_string_list (char **);
static int check_for_filesystem_on (guestfs_h *g, const char *device);
char **
size_t i;
for (i = 0; devices[i] != NULL; ++i) {
if (check_for_filesystem_on (g, devices[i]) == -1) {
- free_string_list (devices);
+ guestfs___free_string_list (devices);
guestfs___free_inspect_info (g);
return NULL;
}
}
- free_string_list (devices);
+ guestfs___free_string_list (devices);
/* Look at all partitions. */
char **partitions;
for (i = 0; partitions[i] != NULL; ++i) {
if (check_for_filesystem_on (g, partitions[i]) == -1) {
- free_string_list (partitions);
+ guestfs___free_string_list (partitions);
guestfs___free_inspect_info (g);
return NULL;
}
}
- free_string_list (partitions);
+ guestfs___free_string_list (partitions);
/* Look at all LVs. */
- if (feature_available (g, "lvm2")) {
+ if (guestfs___feature_available (g, "lvm2")) {
char **lvs;
lvs = guestfs_lvs (g);
if (lvs == NULL) {
for (i = 0; lvs[i] != NULL; ++i) {
if (check_for_filesystem_on (g, lvs[i]) == -1) {
- free_string_list (lvs);
+ guestfs___free_string_list (lvs);
guestfs___free_inspect_info (g);
return NULL;
}
}
- free_string_list (lvs);
+ guestfs___free_string_list (lvs);
}
/* At this point we have, in the handle, a list of all filesystems
return ret;
}
-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].arch);
- free (g->fses[i].windows_systemroot);
- 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);
- }
- free (g->fses);
- g->nr_fses = 0;
- g->fses = NULL;
-}
-
-static void
-free_string_list (char **argv)
-{
- size_t i;
- for (i = 0; argv[i] != NULL; ++i)
- free (argv[i]);
- free (argv);
-}
-
-/* In the Perl code this is a public function. */
-static int
-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.
- */
- 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;
-}
-
/* Find out if 'device' contains a filesystem. If it does, add
* another entry in g->fses.
*/
return -1;
if (product_name[0] == NULL) {
error (g, "%s: file is empty", release_filename);
- free_string_list (product_name);
+ guestfs___free_string_list (product_name);
return -1;
}
free (major);
if (fs->major_version == -1) {
free (minor);
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return -1;
}
fs->minor_version = parse_unsigned_int (g, minor);
free (minor);
if (fs->minor_version == -1) {
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return -1;
}
}
}
}
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return r;
}
if (lines[0] == NULL) {
error (g, "could not parse /etc/fstab or empty file");
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return -1;
}
snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
char *spec = guestfs_aug_get (g, augpath);
if (spec == NULL) {
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return -1;
}
snprintf (augpath, sizeof augpath, "%s/file", lines[i]);
char *mp = guestfs_aug_get (g, augpath);
if (mp == NULL) {
- free_string_list (lines);
+ guestfs___free_string_list (lines);
free (spec);
return -1;
}
free (mp);
if (r == -1) {
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return -1;
}
}
}
- free_string_list (lines);
+ guestfs___free_string_list (lines);
return 0;
}
}
free (a1);
- free_string_list (devices);
+ guestfs___free_string_list (devices);
}
else {
/* Didn't match device pattern, return original spec unchanged. */
return ret;
}
-/* List filesystems.
- *
- * The current implementation just uses guestfs_vfs_type and doesn't
- * try mounting anything, but we reserve the right in future to try
- * mounting filesystems.
- */
+#else /* no PCRE or hivex at compile time */
+
+/* XXX These functions should be in an optgroup. */
-static void remove_from_list (char **list, const char *item);
-static void check_with_vfs_type (guestfs_h *g, const char *dev, char ***ret, size_t *ret_size);
+#define NOT_IMPL(r) \
+ error (g, _("inspection API not available since this version of libguestfs was compiled without PCRE or hivex libraries")); \
+ return r
char **
-guestfs__list_filesystems (guestfs_h *g)
+guestfs__inspect_os (guestfs_h *g)
{
- size_t i;
- char **ret;
- size_t ret_size;
+ NOT_IMPL(NULL);
+}
- ret = safe_malloc (g, sizeof (char *));
- ret[0] = NULL;
- ret_size = 0;
+char **
+guestfs__inspect_get_roots (guestfs_h *g)
+{
+ NOT_IMPL(NULL);
+}
- /* Look to see if any devices directly contain filesystems
- * (RHBZ#590167). However vfs-type will fail to tell us anything
- * useful about devices which just contain partitions, so we also
- * get the list of partitions and exclude the corresponding devices
- * by using part-to-dev.
- */
- char **devices;
- devices = guestfs_list_devices (g);
- if (devices == NULL) {
- free_string_list (ret);
- return NULL;
- }
- char **partitions;
- partitions = guestfs_list_partitions (g);
- if (partitions == NULL) {
- free_string_list (devices);
- free_string_list (ret);
- return NULL;
- }
+char *
+guestfs__inspect_get_type (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
+}
- for (i = 0; partitions[i] != NULL; ++i) {
- char *dev = guestfs_part_to_dev (g, partitions[i]);
- if (dev)
- remove_from_list (devices, dev);
- free (dev);
- }
+char *
+guestfs__inspect_get_arch (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
+}
- /* Use vfs-type to check for filesystems on devices. */
- for (i = 0; devices[i] != NULL; ++i)
- check_with_vfs_type (g, devices[i], &ret, &ret_size);
- free_string_list (devices);
+char *
+guestfs__inspect_get_distro (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
+}
- /* Use vfs-type to check for filesystems on partitions. */
- for (i = 0; partitions[i] != NULL; ++i)
- check_with_vfs_type (g, partitions[i], &ret, &ret_size);
- free_string_list (partitions);
+int
+guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(-1);
+}
- if (feature_available (g, "lvm2")) {
- /* Use vfs-type to check for filesystems on LVs. */
- char **lvs;
- lvs = guestfs_lvs (g);
- if (lvs == NULL) {
- free_string_list (ret);
- return NULL;
- }
+int
+guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(-1);
+}
- for (i = 0; lvs[i] != NULL; ++i)
- check_with_vfs_type (g, lvs[i], &ret, &ret_size);
- free_string_list (lvs);
- }
+char *
+guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
+}
- return ret;
+char *
+guestfs__inspect_get_windows_systemroot (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
}
-/* If 'item' occurs in 'list', remove and free it. */
-static void
-remove_from_list (char **list, const char *item)
+char **
+guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
{
- size_t i;
+ NOT_IMPL(NULL);
+}
- for (i = 0; list[i] != NULL; ++i)
- if (STREQ (list[i], item)) {
- free (list[i]);
- for (; list[i+1] != NULL; ++i)
- list[i] = list[i+1];
- list[i] = NULL;
- return;
- }
+char **
+guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
}
-/* Use vfs-type to look for a filesystem of some sort on 'dev'.
- * Apart from some types which we ignore, add the result to the
- * 'ret' string list.
- */
-static void
-check_with_vfs_type (guestfs_h *g, const char *device,
- char ***ret, size_t *ret_size)
+#endif /* no PCRE or hivex at compile time */
+
+void
+guestfs___free_inspect_info (guestfs_h *g)
{
- char *v;
+ 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].arch);
+ free (g->fses[i].windows_systemroot);
+ 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);
+ }
+ 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.
+ */
guestfs_error_handler_cb old_error_cb = g->error_cb;
g->error_cb = NULL;
- char *vfs_type = guestfs_vfs_type (g, device);
+
+ const char *groups[] = { feature, NULL };
+ int r = guestfs_available (g, (char * const *) groups);
+
g->error_cb = old_error_cb;
- if (!vfs_type)
- v = safe_strdup (g, "unknown");
- else {
- /* Ignore all "*_member" strings. In libblkid these are returned
- * for things which are members of some RAID or LVM set, most
- * importantly "LVM2_member" which is a PV.
- */
- size_t n = strlen (vfs_type);
- if (n >= 7 && STREQ (&vfs_type[n-7], "_member")) {
- free (vfs_type);
- return;
- }
+ return r == 0 ? 1 : 0;
+}
- /* Ignore LUKS-encrypted partitions. These are also containers. */
- if (STREQ (vfs_type, "crypto_LUKS")) {
- free (vfs_type);
- return;
- }
+#ifdef HAVE_PCRE
+
+/* Match a regular expression which contains no captures. Returns
+ * true if it matches or false if it doesn't.
+ */
+int
+guestfs___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;
+ }
+
+ return 1;
+}
+
+/* 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.
+ */
+char *
+guestfs___match1 (guestfs_h *g, const char *str, const pcre *re)
+{
+ size_t len = strlen (str);
+ int vec[30], r;
- v = vfs_type;
+ r = pcre_exec (re, NULL, str, len, 0, 0, vec, sizeof vec / sizeof vec[0]);
+ if (r == PCRE_ERROR_NOMATCH)
+ 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 NULL;
}
- /* Extend the return array. */
- size_t i = *ret_size;
- *ret_size += 2;
- *ret = safe_realloc (g, *ret, (*ret_size + 1) * sizeof (char *));
- (*ret)[i] = safe_strdup (g, device);
- (*ret)[i+1] = v;
- (*ret)[i+2] = NULL;
+ return safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
}
+
+/* Match a regular expression which contains exactly two captures. */
+int
+guestfs___match2 (guestfs_h *g, const char *str, const pcre *re,
+ char **ret1, char **ret2)
+{
+ size_t len = strlen (str);
+ int vec[30], r;
+
+ r = pcre_exec (re, NULL, str, len, 0, 0, vec, 30);
+ if (r == PCRE_ERROR_NOMATCH)
+ return 0;
+ if (r != 3) {
+ /* 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;
+ }
+
+ *ret1 = safe_strndup (g, &str[vec[2]], vec[3]-vec[2]);
+ *ret2 = safe_strndup (g, &str[vec[4]], vec[5]-vec[4]);
+
+ return 1;
+}
+
+#endif /* HAVE_PCRE */
--- /dev/null
+/* libguestfs
+ * Copyright (C) 2010 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
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; 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 <stdint.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "guestfs.h"
+#include "guestfs-internal.h"
+#include "guestfs-internal-actions.h"
+#include "guestfs_protocol.h"
+
+/* List filesystems.
+ *
+ * The current implementation just uses guestfs_vfs_type and doesn't
+ * try mounting anything, but we reserve the right in future to try
+ * mounting filesystems.
+ */
+
+static void remove_from_list (char **list, const char *item);
+static void check_with_vfs_type (guestfs_h *g, const char *dev, char ***ret, size_t *ret_size);
+
+char **
+guestfs__list_filesystems (guestfs_h *g)
+{
+ size_t i;
+ char **ret;
+ size_t ret_size;
+
+ ret = safe_malloc (g, sizeof (char *));
+ ret[0] = NULL;
+ ret_size = 0;
+
+ /* Look to see if any devices directly contain filesystems
+ * (RHBZ#590167). However vfs-type will fail to tell us anything
+ * useful about devices which just contain partitions, so we also
+ * get the list of partitions and exclude the corresponding devices
+ * by using part-to-dev.
+ */
+ char **devices;
+ devices = guestfs_list_devices (g);
+ if (devices == NULL) {
+ guestfs___free_string_list (ret);
+ return NULL;
+ }
+ char **partitions;
+ partitions = guestfs_list_partitions (g);
+ if (partitions == NULL) {
+ guestfs___free_string_list (devices);
+ guestfs___free_string_list (ret);
+ return NULL;
+ }
+
+ for (i = 0; partitions[i] != NULL; ++i) {
+ char *dev = guestfs_part_to_dev (g, partitions[i]);
+ if (dev)
+ remove_from_list (devices, dev);
+ free (dev);
+ }
+
+ /* Use vfs-type to check for filesystems on devices. */
+ for (i = 0; devices[i] != NULL; ++i)
+ check_with_vfs_type (g, devices[i], &ret, &ret_size);
+ guestfs___free_string_list (devices);
+
+ /* Use vfs-type to check for filesystems on partitions. */
+ for (i = 0; partitions[i] != NULL; ++i)
+ check_with_vfs_type (g, partitions[i], &ret, &ret_size);
+ guestfs___free_string_list (partitions);
+
+ if (guestfs___feature_available (g, "lvm2")) {
+ /* Use vfs-type to check for filesystems on LVs. */
+ char **lvs;
+ lvs = guestfs_lvs (g);
+ if (lvs == NULL) {
+ guestfs___free_string_list (ret);
+ return NULL;
+ }
+
+ for (i = 0; lvs[i] != NULL; ++i)
+ check_with_vfs_type (g, lvs[i], &ret, &ret_size);
+ guestfs___free_string_list (lvs);
+ }
+
+ return ret;
+}
+
+/* If 'item' occurs in 'list', remove and free it. */
+static void
+remove_from_list (char **list, const char *item)
+{
+ size_t i;
+
+ for (i = 0; list[i] != NULL; ++i)
+ if (STREQ (list[i], item)) {
+ free (list[i]);
+ for (; list[i+1] != NULL; ++i)
+ list[i] = list[i+1];
+ list[i] = NULL;
+ return;
+ }
+}
+
+/* Use vfs-type to look for a filesystem of some sort on 'dev'.
+ * Apart from some types which we ignore, add the result to the
+ * 'ret' string list.
+ */
+static void
+check_with_vfs_type (guestfs_h *g, const char *device,
+ char ***ret, size_t *ret_size)
+{
+ char *v;
+
+ guestfs_error_handler_cb old_error_cb = g->error_cb;
+ g->error_cb = NULL;
+ char *vfs_type = guestfs_vfs_type (g, device);
+ g->error_cb = old_error_cb;
+
+ if (!vfs_type)
+ v = safe_strdup (g, "unknown");
+ else {
+ /* Ignore all "*_member" strings. In libblkid these are returned
+ * for things which are members of some RAID or LVM set, most
+ * importantly "LVM2_member" which is a PV.
+ */
+ size_t n = strlen (vfs_type);
+ if (n >= 7 && STREQ (&vfs_type[n-7], "_member")) {
+ free (vfs_type);
+ return;
+ }
+
+ /* Ignore LUKS-encrypted partitions. These are also containers. */
+ if (STREQ (vfs_type, "crypto_LUKS")) {
+ free (vfs_type);
+ return;
+ }
+
+ v = vfs_type;
+ }
+
+ /* Extend the return array. */
+ size_t i = *ret_size;
+ *ret_size += 2;
+ *ret = safe_realloc (g, *ret, (*ret_size + 1) * sizeof (char *));
+ (*ret)[i] = safe_strdup (g, device);
+ (*ret)[i+1] = v;
+ (*ret)[i+2] = NULL;
+}
git.annexia.org / libguestfs.git / commitdiff