/* 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
#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>
-#include <augeas.h>
+#endif
#include "c-ctype.h"
#include "ignore-value.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;
-static pcre *re_fedora;
-static pcre *re_rhel_old;
-static pcre *re_rhel;
-static pcre *re_rhel_no_minor;
-static pcre *re_debian;
-static pcre *re_aug_seq;
-static pcre *re_xdev;
-static pcre *re_windows_version;
-
-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);
- COMPILE (re_fedora, "Fedora release (\\d+)", 0);
- COMPILE (re_rhel_old,
- "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+).*Update (\\d+)", 0);
- COMPILE (re_rhel,
- "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)\\.(\\d+)", 0);
- COMPILE (re_rhel_no_minor,
- "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)", 0);
- COMPILE (re_debian, "(\\d+)\\.(\\d+)", 0);
- COMPILE (re_aug_seq, "/\\d+$", 0);
- COMPILE (re_xdev, "^/dev/(?:h|s|v|xv)d([a-z]\\d*)$", 0);
- COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0);
-}
-
-static void
-free_regexps (void)
-{
- pcre_free (re_file_elf);
- pcre_free (re_file_win64);
- pcre_free (re_elf_ppc64);
- pcre_free (re_fedora);
- pcre_free (re_rhel_old);
- pcre_free (re_rhel);
- pcre_free (re_rhel_no_minor);
- pcre_free (re_debian);
- pcre_free (re_aug_seq);
- pcre_free (re_xdev);
- 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 */
-}
+#if defined(HAVE_HIVEX)
/* 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 **
guestfs__inspect_os (guestfs_h *g)
{
size_t i;
for (i = 0; devices[i] != NULL; ++i) {
- if (check_for_filesystem_on (g, devices[i]) == -1) {
- free_string_list (devices);
+ if (guestfs___check_for_filesystem_on (g, devices[i], 1, 0) == -1) {
+ 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);
+ 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;
}
}
- 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);
+ if (guestfs___check_for_filesystem_on (g, lvs[i], 0, 0) == -1) {
+ 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
* 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;
+}
+
+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)
char **ret = calloc (count+1, sizeof (char *));
if (ret == NULL) {
perrorf (g, "calloc");
- guestfs___free_inspect_info (g);
return NULL;
}
return ret;
}
-void
-guestfs___free_inspect_info (guestfs_h *g)
+char *
+guestfs__inspect_get_type (guestfs_h *g, const char *root)
{
- 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);
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
+
+ char *ret;
+ switch (fs->type) {
+ case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
+ case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
+ case OS_TYPE_FREEBSD: ret = safe_strdup (g, "freebsd"); break;
+ case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
}
- 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);
+ return ret;
}
-/* In the Perl code this is a public function. */
-static int
-feature_available (guestfs_h *g, const char *feature)
+char *
+guestfs__inspect_get_arch (guestfs_h *g, const char *root)
{
- /* 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;
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- return r == 0 ? 1 : 0;
+ return safe_strdup (g, fs->arch ? : "unknown");
}
-/* Find out if 'device' contains a filesystem. If it does, add
- * another entry in g->fses.
- */
-static int check_filesystem (guestfs_h *g, const char *device);
-static int check_linux_root (guestfs_h *g, struct inspect_fs *fs);
-static int check_fstab (guestfs_h *g, struct inspect_fs *fs);
-static int check_windows_root (guestfs_h *g, struct inspect_fs *fs);
-static int check_windows_arch (guestfs_h *g, struct inspect_fs *fs);
-static int check_windows_registry (guestfs_h *g, struct inspect_fs *fs);
-static char *resolve_windows_path_silently (guestfs_h *g, const char *);
-static int extend_fses (guestfs_h *g);
-static int parse_unsigned_int (guestfs_h *g, const char *str);
-static int add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
- const char *spec, const char *mp);
-static char *resolve_fstab_device (guestfs_h *g, const char *spec);
-
-static int
-check_for_filesystem_on (guestfs_h *g, const char *device)
+char *
+guestfs__inspect_get_distro (guestfs_h *g, const char *root)
{
- /* Get vfs-type in order to check if it's a Linux(?) swap device.
- * 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);
- g->error_cb = old_error_cb;
-
- int is_swap = vfs_type && STREQ (vfs_type, "swap");
-
- if (g->verbose)
- fprintf (stderr, "check_for_filesystem_on: %s (%s)\n",
- device, vfs_type ? vfs_type : "failed to get vfs type");
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- if (is_swap) {
- free (vfs_type);
- if (extend_fses (g) == -1)
- return -1;
- g->fses[g->nr_fses-1].is_swap = 1;
- return 0;
+ 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_MANDRIVA: ret = safe_strdup (g, "mandriva"); break;
+ case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); 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_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;
}
- /* Try mounting the device. As above, ignore errors. */
- g->error_cb = NULL;
- int r = guestfs_mount_ro (g, device, "/");
- if (r == -1 && vfs_type && STREQ (vfs_type, "ufs")) /* Hack for the *BSDs. */
- r = guestfs_mount_vfs (g, "ro,ufstype=ufs2", "ufs", device, "/");
- free (vfs_type);
- g->error_cb = old_error_cb;
- if (r == -1)
- return 0;
-
- /* Do the rest of the checks. */
- r = check_filesystem (g, device);
+ return ret;
+}
- /* Unmount the filesystem. */
- if (guestfs_umount_all (g) == -1)
+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 r;
+ return fs->major_version;
}
-static int
-check_filesystem (guestfs_h *g, const char *device)
+int
+guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
{
- if (extend_fses (g) == -1)
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
return -1;
- struct inspect_fs *fs = &g->fses[g->nr_fses-1];
-
- fs->device = safe_strdup (g, device);
- fs->is_mountable = 1;
-
- /* Grub /boot? */
- if (guestfs_is_file (g, "/grub/menu.lst") > 0 ||
- guestfs_is_file (g, "/grub/grub.conf") > 0)
- fs->content = FS_CONTENT_LINUX_BOOT;
- /* Linux root? */
- else if (guestfs_is_dir (g, "/etc") > 0 &&
- guestfs_is_dir (g, "/bin") > 0 &&
- guestfs_is_file (g, "/etc/fstab") > 0) {
- fs->is_root = 1;
- fs->content = FS_CONTENT_LINUX_ROOT;
- if (check_linux_root (g, fs) == -1)
- return -1;
- }
- /* Linux /usr/local? */
- else if (guestfs_is_dir (g, "/etc") > 0 &&
- guestfs_is_dir (g, "/bin") > 0 &&
- guestfs_is_dir (g, "/share") > 0 &&
- guestfs_exists (g, "/local") == 0 &&
- guestfs_is_file (g, "/etc/fstab") == 0)
- fs->content = FS_CONTENT_LINUX_USR_LOCAL;
- /* Linux /usr? */
- else if (guestfs_is_dir (g, "/etc") > 0 &&
- guestfs_is_dir (g, "/bin") > 0 &&
- guestfs_is_dir (g, "/share") > 0 &&
- guestfs_exists (g, "/local") > 0 &&
- guestfs_is_file (g, "/etc/fstab") == 0)
- fs->content = FS_CONTENT_LINUX_USR;
- /* Linux /var? */
- else if (guestfs_is_dir (g, "/log") > 0 &&
- guestfs_is_dir (g, "/run") > 0 &&
- guestfs_is_dir (g, "/spool") > 0)
- fs->content = FS_CONTENT_LINUX_VAR;
- /* Windows root? */
- else if (guestfs_is_file (g, "/AUTOEXEC.BAT") > 0 ||
- guestfs_is_file (g, "/autoexec.bat") > 0 ||
- guestfs_is_dir (g, "/Program Files") > 0 ||
- guestfs_is_dir (g, "/WINDOWS") > 0 ||
- guestfs_is_dir (g, "/Windows") > 0 ||
- guestfs_is_dir (g, "/windows") > 0 ||
- guestfs_is_dir (g, "/WIN32") > 0 ||
- guestfs_is_dir (g, "/Win32") > 0 ||
- guestfs_is_dir (g, "/WINNT") > 0 ||
- guestfs_is_file (g, "/boot.ini") > 0 ||
- guestfs_is_file (g, "/ntldr") > 0) {
- fs->is_root = 1;
- fs->content = FS_CONTENT_WINDOWS_ROOT;
- if (check_windows_root (g, fs) == -1)
- return -1;
- }
-
- return 0;
+ return fs->minor_version;
}
-/* Set fs->product_name to the first line of the release file. */
-static int
-parse_release_file (guestfs_h *g, struct inspect_fs *fs,
- const char *release_filename)
+char *
+guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
{
- char **product_name = guestfs_head_n (g, 1, release_filename);
- if (product_name == NULL)
- return -1;
- if (product_name[0] == NULL) {
- error (g, "%s: file is empty", release_filename);
- free_string_list (product_name);
- return -1;
- }
-
- /* Note that this string becomes owned by the handle and will
- * be freed by guestfs___free_inspect_info.
- */
- fs->product_name = product_name[0];
- free (product_name);
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- return 0;
+ return safe_strdup (g, fs->product_name ? : "unknown");
}
-/* The currently mounted device is known to be a Linux root. Try to
- * determine from this the distro, version, etc. Also parse
- * /etc/fstab to determine the arrangement of mountpoints and
- * associated devices.
- */
-static int
-check_linux_root (guestfs_h *g, struct inspect_fs *fs)
+char *
+guestfs__inspect_get_product_variant (guestfs_h *g, const char *root)
{
- fs->type = OS_TYPE_LINUX;
-
- if (guestfs_exists (g, "/etc/redhat-release") > 0) {
- fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
- return -1;
+ return safe_strdup (g, fs->product_variant ? : "unknown");
+}
- char *major, *minor;
- if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
- fs->distro = OS_DISTRO_FEDORA;
- fs->major_version = parse_unsigned_int (g, major);
- free (major);
- if (fs->major_version == -1)
- return -1;
- }
- else if (match2 (g, fs->product_name, re_rhel_old, &major, &minor) ||
- match2 (g, fs->product_name, re_rhel, &major, &minor)) {
- fs->distro = OS_DISTRO_RHEL;
- fs->major_version = parse_unsigned_int (g, major);
- free (major);
- if (fs->major_version == -1) {
- free (minor);
- return -1;
- }
- fs->minor_version = parse_unsigned_int (g, minor);
- free (minor);
- if (fs->minor_version == -1)
- return -1;
- }
- else if ((major = match1 (g, fs->product_name, re_rhel_no_minor)) != NULL) {
- fs->distro = OS_DISTRO_RHEL;
- fs->major_version = parse_unsigned_int (g, major);
- free (major);
- if (fs->major_version == -1)
- return -1;
- fs->minor_version = 0;
- }
- }
- else if (guestfs_exists (g, "/etc/debian_version") > 0) {
- fs->distro = OS_DISTRO_DEBIAN;
-
- if (parse_release_file (g, fs, "/etc/debian_version") == -1)
- return -1;
-
- char *major, *minor;
- if (match2 (g, fs->product_name, re_debian, &major, &minor)) {
- fs->major_version = parse_unsigned_int (g, major);
- free (major);
- if (fs->major_version == -1) {
- free (minor);
- return -1;
- }
- fs->minor_version = parse_unsigned_int (g, minor);
- free (minor);
- if (fs->minor_version == -1)
- return -1;
- }
- }
+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;
- /* Determine the architecture. */
- const char *binaries[] =
- { "/bin/bash", "/bin/ls", "/bin/echo", "/bin/rm", "/bin/sh" };
- size_t i;
- for (i = 0; i < sizeof binaries / sizeof binaries[0]; ++i) {
- if (guestfs_is_file (g, binaries[i]) > 0) {
- /* Ignore errors from file_architecture call. */
- guestfs_error_handler_cb old_error_cb = g->error_cb;
- g->error_cb = NULL;
- char *arch = guestfs_file_architecture (g, binaries[i]);
- g->error_cb = old_error_cb;
-
- if (arch) {
- /* String will be owned by handle, freed by
- * guestfs___free_inspect_info.
- */
- fs->arch = arch;
- break;
- }
- }
+ if (!fs->windows_systemroot) {
+ error (g, _("not a Windows guest, or systemroot could not be determined"));
+ return NULL;
}
- /* We already know /etc/fstab exists because it's part of the test
- * for Linux root above. We must now parse this file to determine
- * which filesystems are used by the operating system and how they
- * are mounted.
- * XXX What if !feature_available (g, "augeas")?
- */
- if (guestfs_aug_init (g, "/", AUG_NO_LOAD|AUG_SAVE_NOOP) == -1)
- return -1;
-
- /* Tell Augeas to only load /etc/fstab (thanks Raphaël Pinson). */
- guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
- guestfs_aug_load (g);
-
- int r = check_fstab (g, fs);
- guestfs_aug_close (g);
- if (r == -1)
- return -1;
-
- return 0;
+ return safe_strdup (g, fs->windows_systemroot);
}
-static int
-check_fstab (guestfs_h *g, struct inspect_fs *fs)
+char *
+guestfs__inspect_get_windows_current_control_set (guestfs_h *g,
+ const char *root)
{
- char **lines = guestfs_aug_ls (g, "/files/etc/fstab");
- if (lines == NULL)
- return -1;
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- if (lines[0] == NULL) {
- error (g, "could not parse /etc/fstab or empty file");
- free_string_list (lines);
- return -1;
+ if (!fs->windows_current_control_set) {
+ error (g, _("not a Windows guest, or CurrentControlSet could not be determined"));
+ return NULL;
}
- size_t i;
- char augpath[256];
- for (i = 0; lines[i] != NULL; ++i) {
- /* Ignore comments. Only care about sequence lines which
- * match m{/\d+$}.
- */
- if (match (g, lines[i], re_aug_seq)) {
- snprintf (augpath, sizeof augpath, "%s/spec", lines[i]);
- char *spec = guestfs_aug_get (g, augpath);
- if (spec == NULL) {
- 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);
- free (spec);
- return -1;
- }
+ return safe_strdup (g, fs->windows_current_control_set);
+}
- int r = add_fstab_entry (g, fs, spec, mp);
- free (spec);
- free (mp);
+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;
- if (r == -1) {
- free_string_list (lines);
- return -1;
- }
- }
+ 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;
}
- free_string_list (lines);
- return 0;
+ return ret;
}
-/* Add a filesystem and possibly a mountpoint entry for
- * the root filesystem 'fs'.
- *
- * 'spec' is the fstab spec field, which might be a device name or a
- * pseudodevice or 'UUID=...' or 'LABEL=...'.
- *
- * 'mp' is the mount point, which could also be 'swap' or 'none'.
- */
-static int
-add_fstab_entry (guestfs_h *g, struct inspect_fs *fs,
- const char *spec, const char *mp)
+int
+guestfs__inspect_is_live (guestfs_h *g, const char *root)
{
- /* Ignore certain mountpoints. */
- if (STRPREFIX (mp, "/dev/") ||
- STREQ (mp, "/dev") ||
- STRPREFIX (mp, "/media/") ||
- STRPREFIX (mp, "/proc/") ||
- STREQ (mp, "/proc") ||
- STRPREFIX (mp, "/selinux/") ||
- STREQ (mp, "/selinux") ||
- STRPREFIX (mp, "/sys/") ||
- STREQ (mp, "/sys"))
- return 0;
-
- /* Ignore /dev/fd (floppy disks) (RHBZ#642929) and CD-ROM drives. */
- if ((STRPREFIX (spec, "/dev/fd") && c_isdigit (spec[7])) ||
- STREQ (spec, "/dev/floppy") ||
- STREQ (spec, "/dev/cdrom"))
- return 0;
-
- /* Resolve UUID= and LABEL= to the actual device. */
- char *device = NULL;
- if (STRPREFIX (spec, "UUID="))
- device = guestfs_findfs_uuid (g, &spec[5]);
- else if (STRPREFIX (spec, "LABEL="))
- device = guestfs_findfs_label (g, &spec[6]);
- /* Ignore "/.swap" (Pardus) and pseudo-devices like "tmpfs". */
- else if (STRPREFIX (spec, "/dev/"))
- /* Resolve guest block device names. */
- device = resolve_fstab_device (g, spec);
-
- /* If we haven't resolved the device successfully by this point,
- * we don't care, just ignore it.
- */
- if (device == NULL)
- return 0;
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return -1;
- char *mountpoint = safe_strdup (g, mp);
+ return fs->is_live_disk;
+}
- /* Add this to the fstab entry in 'fs'.
- * Note these are further filtered by guestfs_inspect_get_mountpoints
- * and guestfs_inspect_get_filesystems.
- */
- size_t n = fs->nr_fstab + 1;
- struct inspect_fstab_entry *p;
-
- p = realloc (fs->fstab, n * sizeof (struct inspect_fstab_entry));
- if (p == NULL) {
- perrorf (g, "realloc");
- free (device);
- free (mountpoint);
+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;
- }
- fs->fstab = p;
- fs->nr_fstab = n;
-
- /* These are owned by the handle and freed by guestfs___free_inspect_info. */
- fs->fstab[n-1].device = device;
- fs->fstab[n-1].mountpoint = mountpoint;
+ return fs->is_netinst_disk;
+}
- if (g->verbose)
- fprintf (stderr, "fstab: device=%s mountpoint=%s\n", device, mountpoint);
+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 0;
+ return fs->is_multipart_disk;
}
-/* Resolve block device name to the libguestfs device name, eg.
- * /dev/xvdb1 => /dev/vdb1; and /dev/mapper/VG-LV => /dev/VG/LV. This
- * assumes that disks were added in the same order as they appear to
- * the real VM, which is a reasonable assumption to make. Return
- * anything we don't recognize unchanged.
- */
-static char *
-resolve_fstab_device (guestfs_h *g, const char *spec)
+char **
+guestfs__inspect_get_mountpoints (guestfs_h *g, const char *root)
{
- char *a1;
- char *device = NULL;
-
- if (STRPREFIX (spec, "/dev/mapper/")) {
- /* LVM2 does some strange munging on /dev/mapper paths for VGs and
- * LVs which contain '-' character:
- *
- * ><fs> lvcreate LV--test VG--test 32
- * ><fs> debug ls /dev/mapper
- * VG----test-LV----test
- *
- * This makes it impossible to reverse those paths directly, so
- * we have implemented lvm_canonical_lv_name in the daemon.
- */
- device = guestfs_lvm_canonical_lv_name (g, spec);
- }
- else if ((a1 = match1 (g, spec, re_xdev)) != NULL) {
- char **devices = guestfs_list_devices (g);
- if (devices == NULL)
- return NULL;
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- size_t count;
- for (count = 0; devices[count] != NULL; count++)
- ;
-
- size_t i = a1[0] - 'a'; /* a1[0] is always [a-z] because of regex. */
- if (i < count) {
- size_t len = strlen (devices[i]) + strlen (a1) + 16;
- device = safe_malloc (g, len);
- snprintf (device, len, "%s%s", devices[i], &a1[1]);
- }
+ char **ret;
- free (a1);
- free_string_list (devices);
- }
- else {
- /* Didn't match device pattern, return original spec unchanged. */
- device = safe_strdup (g, spec);
+ /* 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;
}
- return device;
-}
-
-/* XXX Handling of boot.ini in the Perl version was pretty broken. It
- * essentially didn't do anything for modern Windows guests.
- * Therefore I've omitted all that code.
- */
-static int
-check_windows_root (guestfs_h *g, struct inspect_fs *fs)
-{
- fs->type = OS_TYPE_WINDOWS;
- fs->distro = OS_DISTRO_WINDOWS;
-
- /* Try to find Windows systemroot using some common locations. */
- const char *systemroots[] =
- { "/windows", "/winnt", "/win32", "/win" };
- size_t i;
- char *systemroot = NULL;
- for (i = 0;
- systemroot == NULL && i < sizeof systemroots / sizeof systemroots[0];
- ++i) {
- systemroot = resolve_windows_path_silently (g, systemroots[i]);
- }
+#define CRITERION fs->fstab[i].mountpoint[0] == '/'
+ size_t i, count = 0;
+ for (i = 0; i < fs->nr_fstab; ++i)
+ if (CRITERION)
+ count++;
- if (!systemroot) {
- error (g, _("cannot resolve Windows %%SYSTEMROOT%%"));
- return -1;
+ /* Hashtables have 2N+1 entries. */
+ ret = calloc (2*count+1, sizeof (char *));
+ if (ret == NULL) {
+ perrorf (g, "calloc");
+ return NULL;
}
- if (g->verbose)
- fprintf (stderr, "windows %%SYSTEMROOT%% = %s", systemroot);
-
- /* Freed by guestfs___free_inspect_info. */
- fs->windows_systemroot = systemroot;
-
- if (check_windows_arch (g, fs) == -1)
- return -1;
-
- if (check_windows_registry (g, fs) == -1)
- return -1;
+ 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 0;
+ return ret;
}
-static int
-check_windows_arch (guestfs_h *g, struct inspect_fs *fs)
+char **
+guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
{
- size_t len = strlen (fs->windows_systemroot) + 32;
- char cmd_exe[len];
- snprintf (cmd_exe, len, "%s/system32/cmd.exe", fs->windows_systemroot);
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- char *cmd_exe_path = resolve_windows_path_silently (g, cmd_exe);
- if (!cmd_exe_path)
- return 0;
+ 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;
+ }
- char *arch = guestfs_file_architecture (g, cmd_exe_path);
- free (cmd_exe_path);
+ ret = calloc (fs->nr_fstab + 1, sizeof (char *));
+ if (ret == NULL) {
+ perrorf (g, "calloc");
+ return NULL;
+ }
- if (arch)
- fs->arch = arch; /* freed by guestfs___free_inspect_info */
+ size_t i;
+ for (i = 0; i < fs->nr_fstab; ++i)
+ ret[i] = safe_strdup (g, fs->fstab[i].device);
- return 0;
+ return ret;
}
-/* At the moment, pull just the ProductName and version numbers from
- * the registry. In future there is a case for making many more
- * registry fields available to callers.
- */
-static int
-check_windows_registry (guestfs_h *g, struct inspect_fs *fs)
+char **
+guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root)
{
- TMP_TEMPLATE_ON_STACK (dir);
-#define dir_len (strlen (dir))
-#define software_hive_len (dir_len + 16)
- char software_hive[software_hive_len];
-#define cmd_len (dir_len + 16)
- char cmd[cmd_len];
-
- size_t len = strlen (fs->windows_systemroot) + 64;
- char software[len];
- snprintf (software, len, "%s/system32/config/software",
- fs->windows_systemroot);
-
- char *software_path = resolve_windows_path_silently (g, software);
- if (!software_path)
- /* If the software hive doesn't exist, just accept that we cannot
- * find product_name etc.
- */
- return 0;
-
- int ret = -1;
- hive_h *h = NULL;
- hive_value_h *values = NULL;
-
- if (mkdtemp (dir) == NULL) {
- perrorf (g, "mkdtemp");
- goto out;
- }
-
- snprintf (software_hive, software_hive_len, "%s/software", dir);
-
- if (guestfs_download (g, software_path, software_hive) == -1)
- goto out;
+ char **ret;
+ size_t i, count;
+ struct inspect_fs *fs;
- h = hivex_open (software_hive, g->verbose ? HIVEX_OPEN_VERBOSE : 0);
- if (h == NULL) {
- perrorf (g, "hivex_open");
- goto out;
- }
+ fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
- hive_node_h node = hivex_root (h);
- const char *hivepath[] =
- { "Microsoft", "Windows NT", "CurrentVersion" };
- size_t i;
- for (i = 0;
- node != 0 && i < sizeof hivepath / sizeof hivepath[0];
- ++i) {
- node = hivex_node_get_child (h, node, hivepath[i]);
+ /* If no drive mappings, return an empty hashtable. */
+ if (!fs->drive_mappings)
+ count = 0;
+ else {
+ for (count = 0; fs->drive_mappings[count] != NULL; count++)
+ ;
}
- if (node == 0) {
- perrorf (g, "hivex: cannot locate HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");
- goto out;
+ ret = calloc (count+1, sizeof (char *));
+ if (ret == NULL) {
+ perrorf (g, "calloc");
+ return NULL;
}
- values = hivex_node_values (h, node);
+ /* We need to make a deep copy of the hashtable since the caller
+ * will free it.
+ */
+ for (i = 0; i < count; ++i)
+ ret[i] = safe_strdup (g, fs->drive_mappings[i]);
- for (i = 0; values[i] != 0; ++i) {
- char *key = hivex_value_key (h, values[i]);
- if (key == NULL) {
- perrorf (g, "hivex_value_key");
- goto out;
- }
+ ret[count] = NULL;
- if (STRCASEEQ (key, "ProductName")) {
- fs->product_name = hivex_value_string (h, values[i]);
- if (!fs->product_name) {
- perrorf (g, "hivex_value_string");
- free (key);
- goto out;
- }
- }
- else if (STRCASEEQ (key, "CurrentVersion")) {
- char *version = hivex_value_string (h, values[i]);
- if (!version) {
- perrorf (g, "hivex_value_string");
- free (key);
- goto out;
- }
- char *major, *minor;
- if (match2 (g, version, re_windows_version, &major, &minor)) {
- fs->major_version = parse_unsigned_int (g, major);
- free (major);
- if (fs->major_version == -1) {
- free (minor);
- free (key);
- free (version);
- goto out;
- }
- fs->minor_version = parse_unsigned_int (g, minor);
- free (minor);
- if (fs->minor_version == -1) {
- free (key);
- free (version);
- return -1;
- }
- }
+ return ret;
+}
- free (version);
- }
+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;
- free (key);
+ 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_UNKNOWN:
+ default:
+ ret = safe_strdup (g, "unknown");
+ break;
}
- ret = 0;
+ return ret;
+}
- out:
- if (h) hivex_close (h);
- free (values);
- free (software_path);
+char *
+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;
- /* 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));
-#undef dir_len
-#undef software_hive_len
-#undef cmd_len
+ 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_UNKNOWN:
+ default:
+ ret = safe_strdup (g, "unknown");
+ break;
+ }
return ret;
}
-static char *
-resolve_windows_path_silently (guestfs_h *g, const char *path)
+char *
+guestfs__inspect_get_hostname (guestfs_h *g, const char *root)
{
- guestfs_error_handler_cb old_error_cb = g->error_cb;
- g->error_cb = NULL;
- char *ret = guestfs_case_sensitive_path (g, path);
- g->error_cb = old_error_cb;
- return ret;
+ struct inspect_fs *fs = guestfs___search_for_root (g, root);
+ if (!fs)
+ return NULL;
+
+ return safe_strdup (g, fs->hostname ? : "unknown");
}
-static int
-extend_fses (guestfs_h *g)
-{
- size_t n = g->nr_fses + 1;
- struct inspect_fs *p;
+/* 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/%ld-%s", g->tmpdir, fs - g->fses, basename) == -1) {
+ perrorf (g, "asprintf");
+ return NULL;
+ }
- p = realloc (g->fses, n * sizeof (struct inspect_fs));
- if (p == NULL) {
- perrorf (g, "realloc");
- return -1;
+ /* 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;
}
- g->fses = p;
- g->nr_fses = n;
+ fd = open (r, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY, 0600);
+ if (fd == -1) {
+ perrorf (g, "open: %s", r);
+ goto error;
+ }
- memset (&g->fses[n-1], 0, sizeof (struct inspect_fs));
+ snprintf (devfd, sizeof devfd, "/dev/fd/%d", fd);
- return 0;
-}
+ if (guestfs_download (g, filename, devfd) == -1) {
+ unlink (r);
+ close (fd);
+ goto error;
+ }
-/* Parse small, unsigned ints, as used in version numbers. */
-static int
-parse_unsigned_int (guestfs_h *g, const char *str)
-{
- long ret;
- int r = xstrtol (str, NULL, 10, &ret, "");
- if (r != LONGINT_OK) {
- error (g, "could not parse integer in version number: %s", str);
- return -1;
+ if (close (fd) == -1) {
+ perrorf (g, "close: %s", r);
+ unlink (r);
+ goto error;
}
- return ret;
+
+ return r;
+
+ error:
+ free (r);
+ return NULL;
}
-static struct inspect_fs *
-search_for_root (guestfs_h *g, const char *root)
+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;
}
-char *
-guestfs__inspect_get_type (guestfs_h *g, const char *root)
+#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)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return NULL;
+ NOT_IMPL(NULL);
+}
- char *ret;
- switch (fs->type) {
- case OS_TYPE_LINUX: ret = safe_strdup (g, "linux"); break;
- case OS_TYPE_WINDOWS: ret = safe_strdup (g, "windows"); break;
- case OS_TYPE_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
- }
+char **
+guestfs__inspect_get_roots (guestfs_h *g)
+{
+ NOT_IMPL(NULL);
+}
- return ret;
+char *
+guestfs__inspect_get_type (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
}
char *
guestfs__inspect_get_arch (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return NULL;
-
- return safe_strdup (g, fs->arch ? : "unknown");
+ NOT_IMPL(NULL);
}
char *
guestfs__inspect_get_distro (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return NULL;
-
- char *ret;
- switch (fs->distro) {
- case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
- case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); 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_WINDOWS: ret = safe_strdup (g, "windows"); break;
- case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
- }
-
- return ret;
+ NOT_IMPL(NULL);
}
int
guestfs__inspect_get_major_version (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return -1;
-
- return fs->major_version;
+ NOT_IMPL(-1);
}
int
guestfs__inspect_get_minor_version (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return -1;
-
- return fs->minor_version;
+ NOT_IMPL(-1);
}
char *
guestfs__inspect_get_product_name (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = search_for_root (g, root);
- if (!fs)
- return NULL;
+ NOT_IMPL(NULL);
+}
- return safe_strdup (g, fs->product_name ? : "unknown");
+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)
{
- struct inspect_fs *fs = 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;
- }
+ NOT_IMPL(NULL);
+}
- return safe_strdup (g, fs->windows_systemroot);
+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)
{
- struct inspect_fs *fs = 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;
- }
-
-#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;
+ NOT_IMPL(NULL);
}
char **
guestfs__inspect_get_filesystems (guestfs_h *g, const char *root)
{
- struct inspect_fs *fs = 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;
- }
-
- size_t i;
- for (i = 0; i < fs->nr_fstab; ++i)
- ret[i] = safe_strdup (g, fs->fstab[i].device);
-
- return ret;
+ NOT_IMPL(NULL);
}
-/* 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)
+guestfs__inspect_get_drive_mappings (guestfs_h *g, const char *root)
{
- size_t i;
- char **ret;
- size_t ret_size;
-
- ret = safe_malloc (g, sizeof (char *));
- ret[0] = NULL;
- ret_size = 0;
+ 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_package_format (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_package_management (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_hostname (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);
+char *
+guestfs__inspect_get_format (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(NULL);
+}
- 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_is_live (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);
- }
+int
+guestfs__inspect_is_netinst (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(-1);
+}
- return ret;
+int
+guestfs__inspect_is_multipart (guestfs_h *g, const char *root)
+{
+ NOT_IMPL(-1);
}
-/* If 'item' occurs in 'list', remove and free it. */
-static void
-remove_from_list (char **list, const char *item)
+#endif /* no hivex at compile time */
+
+void
+guestfs___free_inspect_info (guestfs_h *g)
{
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;
+ 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;
}
-/* 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)
+/* In the Perl code this is a public function. */
+int
+guestfs___feature_available (guestfs_h *g, const char *feature)
{
- char *v;
-
+ /* 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);
- 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;
- }
+ const char *groups[] = { feature, NULL };
+ int r = guestfs_available (g, (char * const *) groups);
- v = vfs_type;
- }
+ g->error_cb = old_error_cb;
- /* 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 r == 0 ? 1 : 0;
}
git.annexia.org / libguestfs.git / blobdiff