/* Given a partition (eg. /dev/sda2) then return the partition number * (eg. 2) and the total number of other partitions. */ static int get_partition_context (guestfs_h *g, const char *partition, int *partnum_ret, int *nr_partitions_ret) { int partnum, nr_partitions; CLEANUP_FREE char *device = NULL; CLEANUP_FREE_PARTITION_LIST struct guestfs_partition_list *partitions = NULL; partnum = guestfs_part_to_partnum (g, partition); if (partnum == -1) return -1; device = guestfs_part_to_dev (g, partition); if (device == NULL) return -1; partitions = guestfs_part_list (g, device); if (partitions == NULL) return -1; nr_partitions = partitions->len; *partnum_ret = partnum; *nr_partitions_ret = nr_partitions; return 0; }
/* Matches Windows registry HKLM\SYSYTEM\MountedDevices\DosDevices blob to * to libguestfs GPT partition device. For GPT disks, the blob is made of * "DMIO:ID:" prefix followed by the GPT partition GUID. */ static char * map_registry_disk_blob_gpt (guestfs_h *g, const void *blob) { CLEANUP_FREE_STRING_LIST char **parts = NULL; CLEANUP_FREE char *blob_guid = extract_guid_from_registry_blob (g, blob); size_t i; parts = guestfs_list_partitions (g); if (parts == NULL) return NULL; for (i = 0; parts[i] != NULL; ++i) { CLEANUP_FREE char *fs_guid = NULL; int partnum; CLEANUP_FREE char *device = NULL; CLEANUP_FREE char *type = NULL; partnum = guestfs_part_to_partnum (g, parts[i]); if (partnum == -1) continue; device = guestfs_part_to_dev (g, parts[i]); if (device == NULL) continue; type = guestfs_part_get_parttype (g, device); if (type == NULL) continue; if (STRCASENEQ (type, "gpt")) continue; /* get the GPT parition GUID from the partition block device */ fs_guid = guestfs_part_get_gpt_guid (g, device, partnum); if (fs_guid == NULL) continue; /* if both GUIDs match, we have found the mapping for our device */ if (STRCASEEQ (fs_guid, blob_guid)) return safe_strdup (g, parts[i]); } return NULL; }
static int get_mbr_id (const char *dev, const char *parent_name) { CLEANUP_FREE char *parttype = NULL; int mbr_id = -1, partnum; guestfs_push_error_handler (g, NULL, NULL); parttype = guestfs_part_get_parttype (g, parent_name); if (parttype && STREQ (parttype, "msdos")) { partnum = guestfs_part_to_partnum (g, dev); if (partnum >= 0) mbr_id = guestfs_part_get_mbr_id (g, parent_name, partnum); } guestfs_pop_error_handler (g); return mbr_id; }
static int check_filesystem (guestfs_h *g, const char *mountable, const struct guestfs_internal_mountable *m, int whole_device) { /* Not CLEANUP_FREE, as it will be cleaned up with inspection info */ char *windows_systemroot = NULL; if (extend_fses (g) == -1) return -1; int partnum = -1; if (!whole_device && m->im_type == MOUNTABLE_DEVICE) { guestfs_push_error_handler (g, NULL, NULL); partnum = guestfs_part_to_partnum (g, m->im_device); guestfs_pop_error_handler (g); } struct inspect_fs *fs = &g->fses[g->nr_fses-1]; fs->mountable = safe_strdup (g, mountable); /* Optimize some of the tests by avoiding multiple tests of the same thing. */ int is_dir_etc = guestfs_is_dir (g, "/etc") > 0; int is_dir_bin = guestfs_is_dir (g, "/bin") > 0; int is_dir_share = guestfs_is_dir (g, "/share") > 0; /* Grub /boot? */ if (guestfs_is_file (g, "/grub/menu.lst") > 0 || guestfs_is_file (g, "/grub/grub.conf") > 0 || guestfs_is_file (g, "/grub2/grub.cfg") > 0) ; /* FreeBSD root? */ else if (is_dir_etc && is_dir_bin && guestfs_is_file (g, "/etc/freebsd-update.conf") > 0 && guestfs_is_file (g, "/etc/fstab") > 0) { /* Ignore /dev/sda1 which is a shadow of the real root filesystem * that is probably /dev/sda5 (see: * http://www.freebsd.org/doc/handbook/disk-organization.html) */ if (m->im_type == MOUNTABLE_DEVICE && match (g, m->im_device, re_first_partition)) return 0; fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; if (guestfs___check_freebsd_root (g, fs) == -1) return -1; } else if (is_dir_etc && is_dir_bin && guestfs_is_file (g, "/etc/fstab") > 0 && guestfs_is_file (g, "/etc/release") > 0) { /* Ignore /dev/sda1 which is a shadow of the real root filesystem * that is probably /dev/sda5 (see: * http://www.freebsd.org/doc/handbook/disk-organization.html) */ if (m->im_type == MOUNTABLE_DEVICE && match (g, m->im_device, re_first_partition)) return 0; fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; if (guestfs___check_netbsd_root (g, fs) == -1) return -1; } /* Hurd root? */ else if (guestfs_is_file (g, "/hurd/console") > 0 && guestfs_is_file (g, "/hurd/hello") > 0 && guestfs_is_file (g, "/hurd/null") > 0) { fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; /* XXX could be more specific */ if (guestfs___check_hurd_root (g, fs) == -1) return -1; } /* Linux root? */ else if (is_dir_etc && (is_dir_bin || (guestfs_is_symlink (g, "/bin") > 0 && guestfs_is_dir (g, "/usr/bin") > 0)) && guestfs_is_file (g, "/etc/fstab") > 0) { fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; if (guestfs___check_linux_root (g, fs) == -1) return -1; } /* Linux /usr/local? */ else if (is_dir_etc && is_dir_bin && is_dir_share && guestfs_is_dir (g, "/local") == 0 && guestfs_is_file (g, "/etc/fstab") == 0) ; /* Linux /usr? */ else if (is_dir_etc && is_dir_bin && is_dir_share && guestfs_is_dir (g, "/local") > 0 && guestfs_is_file (g, "/etc/fstab") == 0) ; /* Linux /var? */ else if (guestfs_is_dir (g, "/log") > 0 && guestfs_is_dir (g, "/run") > 0 && guestfs_is_dir (g, "/spool") > 0) ; /* Windows root? */ else if ((windows_systemroot = guestfs___get_windows_systemroot (g)) != NULL) { fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; if (guestfs___check_windows_root (g, fs, windows_systemroot) == -1) return -1; } /* Windows volume with installed applications (but not root)? */ else if (guestfs___is_dir_nocase (g, "/System Volume Information") > 0 && guestfs___is_dir_nocase (g, "/Program Files") > 0) ; /* Windows volume (but not root)? */ else if (guestfs___is_dir_nocase (g, "/System Volume Information") > 0) ; /* FreeDOS? */ else if (guestfs___is_dir_nocase (g, "/FDOS") > 0 && guestfs___is_file_nocase (g, "/FDOS/FREEDOS.BSS") > 0) { fs->is_root = 1; fs->format = OS_FORMAT_INSTALLED; fs->type = OS_TYPE_DOS; fs->distro = OS_DISTRO_FREEDOS; /* FreeDOS is a mix of 16 and 32 bit, but assume it requires a * 32 bit i386 processor. */ fs->arch = safe_strdup (g, "i386"); } /* Install CD/disk? * * Note that we checked (above) for an install ISO, but there are * other types of install image (eg. USB keys) which that check * wouldn't have picked up. * * Skip these checks if it's not a whole device (eg. CD) or the * first partition (eg. bootable USB key). */ else if ((whole_device || partnum == 1) && (guestfs_is_file (g, "/isolinux/isolinux.cfg") > 0 || guestfs_is_dir (g, "/EFI/BOOT") > 0 || guestfs_is_file (g, "/images/install.img") > 0 || guestfs_is_dir (g, "/.disk") > 0 || guestfs_is_file (g, "/.discinfo") > 0 || guestfs_is_file (g, "/i386/txtsetup.sif") > 0 || guestfs_is_file (g, "/amd64/txtsetup.sif") > 0 || guestfs_is_file (g, "/freedos/freedos.ico") > 0 || guestfs_is_file (g, "/boot/loader.rc") > 0)) { fs->is_root = 1; fs->format = OS_FORMAT_INSTALLER; if (guestfs___check_installer_root (g, fs) == -1) return -1; } /* The above code should have set fs->type and fs->distro fields, so * we can now guess the package management system. */ guestfs___check_package_format (g, fs); guestfs___check_package_management (g, fs); return 0; }