int print_device_pt(struct fdisk_context *cxt, char *device, int warnme, int verify)
{
if (fdisk_assign_device(cxt, device, 1) != 0) { /* read-only */
if (warnme || errno == EACCES)
warn(_("cannot open %s"), device);
return -1;
}
list_disk_geometry(cxt);
if (fdisk_has_label(cxt)) {
list_disklabel(cxt);
if (verify)
fdisk_verify_disklabel(cxt);
}
fdisk_deassign_device(cxt, 1);
return 0;
}
void list_disk_geometry(struct fdisk_context *cxt)
{
char *id = NULL;
struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
uint64_t bytes = fdisk_get_nsectors(cxt) * fdisk_get_sector_size(cxt);
char *strsz = size_to_human_string(SIZE_SUFFIX_SPACE
| SIZE_SUFFIX_3LETTER, bytes);
color_scheme_enable("header", UL_COLOR_BOLD);
fdisk_info(cxt, _("Disk %s: %s, %ju bytes, %ju sectors"),
fdisk_get_devname(cxt), strsz,
bytes, (uintmax_t) fdisk_get_nsectors(cxt));
color_disable();
free(strsz);
if (lb && (fdisk_label_require_geometry(lb) || fdisk_use_cylinders(cxt)))
fdisk_info(cxt, _("Geometry: %d heads, %llu sectors/track, %llu cylinders"),
fdisk_get_geom_heads(cxt),
fdisk_get_geom_sectors(cxt),
fdisk_get_geom_cylinders(cxt));
fdisk_info(cxt, _("Units: %s of %d * %ld = %ld bytes"),
fdisk_get_unit(cxt, FDISK_PLURAL),
fdisk_get_units_per_sector(cxt),
fdisk_get_sector_size(cxt),
fdisk_get_units_per_sector(cxt) * fdisk_get_sector_size(cxt));
fdisk_info(cxt, _("Sector size (logical/physical): %lu bytes / %lu bytes"),
fdisk_get_sector_size(cxt),
fdisk_get_physector_size(cxt));
fdisk_info(cxt, _("I/O size (minimum/optimal): %lu bytes / %lu bytes"),
fdisk_get_minimal_iosize(cxt),
fdisk_get_optimal_iosize(cxt));
if (fdisk_get_alignment_offset(cxt))
fdisk_info(cxt, _("Alignment offset: %lu bytes"),
fdisk_get_alignment_offset(cxt));
if (fdisk_has_label(cxt))
fdisk_info(cxt, _("Disklabel type: %s"),
fdisk_label_get_name(lb));
if (fdisk_get_disklabel_id(cxt, &id) == 0 && id)
fdisk_info(cxt, _("Disk identifier: %s"), id);
}
static int verify_device(struct sfdisk *sf, const char *devname)
{
int rc = 1;
fdisk_enable_listonly(sf->cxt, 1);
if (fdisk_assign_device(sf->cxt, devname, 1)) {
warn(_("cannot open %s"), devname);
return 1;
}
color_scheme_enable("header", UL_COLOR_BOLD);
fdisk_info(sf->cxt, "%s:", devname);
color_disable();
if (!fdisk_has_label(sf->cxt))
fdisk_info(sf->cxt, _("unrecognized partition table type"));
else
rc = fdisk_verify_disklabel(sf->cxt);
fdisk_deassign_device(sf->cxt, 1);
return rc;
}
/**
* fdisk_assign_device:
* @cxt: context
* @fname: path to the device to be handled
* @readonly: how to open the device
*
* Open the device, discovery topology, geometry, detect disklabel and switch
* the current label driver to reflect the probing result.
*
* Note that this function resets all generic setting in context. If the @cxt
* is nested context then the device is assigned to the parental context and
* necessary properties are copied to the @cxt. The change is propagated in
* child->parent direction only. It's impossible to use a different device for
* primary and nested contexts.
*
* Returns: 0 on success, < 0 on error.
*/
int fdisk_assign_device(struct fdisk_context *cxt,
const char *fname, int readonly)
{
int fd;
DBG(CXT, ul_debugobj(cxt, "assigning device %s", fname));
assert(cxt);
/* redirect request to parent */
if (cxt->parent) {
int rc, org = fdisk_is_listonly(cxt->parent);
/* assign_device() is sensitive to "listonly" mode, so let's
* follow the current context setting for the parent to avoid
* unwanted extra warnings. */
fdisk_enable_listonly(cxt->parent, fdisk_is_listonly(cxt));
rc = fdisk_assign_device(cxt->parent, fname, readonly);
fdisk_enable_listonly(cxt->parent, org);
if (!rc)
rc = init_nested_from_parent(cxt, 0);
if (!rc)
fdisk_probe_labels(cxt);
return rc;
}
reset_context(cxt);
fd = open(fname, (readonly ? O_RDONLY : O_RDWR ) | O_CLOEXEC);
if (fd < 0)
return -errno;
cxt->readonly = readonly;
cxt->dev_fd = fd;
cxt->dev_path = strdup(fname);
if (!cxt->dev_path)
goto fail;
fdisk_discover_topology(cxt);
fdisk_discover_geometry(cxt);
if (fdisk_read_firstsector(cxt) < 0)
goto fail;
/* detect labels and apply labes specific stuff (e.g geomery)
* to the context */
fdisk_probe_labels(cxt);
/* let's apply user geometry *after* label prober
* to make it possible to override in-label setting */
fdisk_apply_user_device_properties(cxt);
/* warn about obsolete stuff on the device if we aren't in
* list-only mode and there is not PT yet */
if (!fdisk_is_listonly(cxt) && !fdisk_has_label(cxt))
warn_wipe(cxt);
DBG(CXT, ul_debugobj(cxt, "initialized for %s [%s]",
fname, readonly ? "READ-ONLY" : "READ-WRITE"));
return 0;
fail:
DBG(CXT, ul_debugobj(cxt, "failed to assign device"));
return -errno;
}
