87b8530fe2
So far partition search by name has been supported only on the EFI partition table. This patch extends the search to all partition tables. Rename part_get_info_efi_by_name() to part_get_info_by_name(), move it from part_efi.c into part.c and make it a generic function which traverses all part drivers and searches all partitions (in the order given by the linked list). For this a new variable struct part_driver.max_entries is added, which limits the number of partitions searched. For EFI this was GPT_ENTRY_NUMBERS. Similarly the limit is defined for DOS, ISO, MAC and AMIGA partition tables. Signed-off-by: Petr Kulhavy <brain@jikos.cz> Reviewed-by: Tom Rini <trini@konsulko.com> Acked-by: Steve Rae <steve.rae@raedomain.com>
644 lines
14 KiB
C
644 lines
14 KiB
C
/*
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* (C) Copyright 2001
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <ide.h>
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#include <malloc.h>
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#include <part.h>
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#include <ubifs_uboot.h>
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#undef PART_DEBUG
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#ifdef PART_DEBUG
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#define PRINTF(fmt,args...) printf (fmt ,##args)
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#else
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#define PRINTF(fmt,args...)
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef HAVE_BLOCK_DEVICE
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static struct part_driver *part_driver_lookup_type(int part_type)
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{
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struct part_driver *drv =
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ll_entry_start(struct part_driver, part_driver);
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const int n_ents = ll_entry_count(struct part_driver, part_driver);
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struct part_driver *entry;
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for (entry = drv; entry != drv + n_ents; entry++) {
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if (part_type == entry->part_type)
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return entry;
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}
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/* Not found */
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return NULL;
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}
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static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
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{
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struct blk_desc *dev_desc;
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int ret;
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dev_desc = blk_get_devnum_by_typename(ifname, dev);
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if (!dev_desc) {
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debug("%s: No device for iface '%s', dev %d\n", __func__,
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ifname, dev);
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return NULL;
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}
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ret = blk_dselect_hwpart(dev_desc, hwpart);
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if (ret) {
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debug("%s: Failed to select h/w partition: err-%d\n", __func__,
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ret);
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return NULL;
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}
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return dev_desc;
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}
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struct blk_desc *blk_get_dev(const char *ifname, int dev)
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{
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return get_dev_hwpart(ifname, dev, 0);
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}
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#else
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struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
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{
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return NULL;
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}
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struct blk_desc *blk_get_dev(const char *ifname, int dev)
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{
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return NULL;
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}
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#endif
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#ifdef HAVE_BLOCK_DEVICE
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/* ------------------------------------------------------------------------- */
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/*
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* reports device info to the user
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*/
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#ifdef CONFIG_LBA48
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typedef uint64_t lba512_t;
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#else
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typedef lbaint_t lba512_t;
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#endif
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/*
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* Overflowless variant of (block_count * mul_by / div_by)
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* when div_by > mul_by
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*/
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static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, lba512_t div_by)
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{
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lba512_t bc_quot, bc_rem;
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/* x * m / d == x / d * m + (x % d) * m / d */
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bc_quot = block_count / div_by;
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bc_rem = block_count - div_by * bc_quot;
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return bc_quot * mul_by + (bc_rem * mul_by) / div_by;
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}
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void dev_print (struct blk_desc *dev_desc)
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{
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lba512_t lba512; /* number of blocks if 512bytes block size */
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if (dev_desc->type == DEV_TYPE_UNKNOWN) {
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puts ("not available\n");
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return;
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}
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switch (dev_desc->if_type) {
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case IF_TYPE_SCSI:
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printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
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dev_desc->target,dev_desc->lun,
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dev_desc->vendor,
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dev_desc->product,
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dev_desc->revision);
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break;
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case IF_TYPE_ATAPI:
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case IF_TYPE_IDE:
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case IF_TYPE_SATA:
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printf ("Model: %s Firm: %s Ser#: %s\n",
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dev_desc->vendor,
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dev_desc->revision,
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dev_desc->product);
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break;
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case IF_TYPE_SD:
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case IF_TYPE_MMC:
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case IF_TYPE_USB:
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printf ("Vendor: %s Rev: %s Prod: %s\n",
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dev_desc->vendor,
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dev_desc->revision,
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dev_desc->product);
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break;
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case IF_TYPE_DOC:
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puts("device type DOC\n");
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return;
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case IF_TYPE_UNKNOWN:
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puts("device type unknown\n");
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return;
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default:
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printf("Unhandled device type: %i\n", dev_desc->if_type);
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return;
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}
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puts (" Type: ");
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if (dev_desc->removable)
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puts ("Removable ");
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switch (dev_desc->type & 0x1F) {
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case DEV_TYPE_HARDDISK:
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puts ("Hard Disk");
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break;
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case DEV_TYPE_CDROM:
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puts ("CD ROM");
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break;
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case DEV_TYPE_OPDISK:
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puts ("Optical Device");
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break;
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case DEV_TYPE_TAPE:
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puts ("Tape");
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break;
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default:
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printf ("# %02X #", dev_desc->type & 0x1F);
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break;
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}
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puts ("\n");
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if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
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ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
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lbaint_t lba;
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lba = dev_desc->lba;
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lba512 = (lba * (dev_desc->blksz/512));
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/* round to 1 digit */
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/* 2048 = (1024 * 1024) / 512 MB */
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mb = lba512_muldiv(lba512, 10, 2048);
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mb_quot = mb / 10;
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mb_rem = mb - (10 * mb_quot);
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gb = mb / 1024;
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gb_quot = gb / 10;
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gb_rem = gb - (10 * gb_quot);
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#ifdef CONFIG_LBA48
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if (dev_desc->lba48)
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printf (" Supports 48-bit addressing\n");
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#endif
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#if defined(CONFIG_SYS_64BIT_LBA)
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printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%Ld x %ld)\n",
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mb_quot, mb_rem,
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gb_quot, gb_rem,
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lba,
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dev_desc->blksz);
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#else
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printf (" Capacity: %ld.%ld MB = %ld.%ld GB (%ld x %ld)\n",
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mb_quot, mb_rem,
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gb_quot, gb_rem,
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(ulong)lba,
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dev_desc->blksz);
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#endif
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} else {
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puts (" Capacity: not available\n");
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}
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}
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#endif
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#ifdef HAVE_BLOCK_DEVICE
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void part_init(struct blk_desc *dev_desc)
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{
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struct part_driver *drv =
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ll_entry_start(struct part_driver, part_driver);
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const int n_ents = ll_entry_count(struct part_driver, part_driver);
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struct part_driver *entry;
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blkcache_invalidate(dev_desc->if_type, dev_desc->devnum);
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dev_desc->part_type = PART_TYPE_UNKNOWN;
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for (entry = drv; entry != drv + n_ents; entry++) {
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int ret;
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ret = entry->test(dev_desc);
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debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret);
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if (!ret) {
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dev_desc->part_type = entry->part_type;
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break;
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}
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}
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}
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static void print_part_header(const char *type, struct blk_desc *dev_desc)
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{
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#if defined(CONFIG_MAC_PARTITION) || \
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defined(CONFIG_DOS_PARTITION) || \
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defined(CONFIG_ISO_PARTITION) || \
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defined(CONFIG_AMIGA_PARTITION) || \
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defined(CONFIG_EFI_PARTITION)
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puts ("\nPartition Map for ");
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switch (dev_desc->if_type) {
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case IF_TYPE_IDE:
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puts ("IDE");
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break;
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case IF_TYPE_SATA:
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puts ("SATA");
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break;
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case IF_TYPE_SCSI:
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puts ("SCSI");
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break;
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case IF_TYPE_ATAPI:
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puts ("ATAPI");
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break;
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case IF_TYPE_USB:
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puts ("USB");
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break;
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case IF_TYPE_DOC:
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puts ("DOC");
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break;
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case IF_TYPE_MMC:
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puts ("MMC");
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break;
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case IF_TYPE_HOST:
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puts("HOST");
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break;
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default:
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puts ("UNKNOWN");
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break;
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}
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printf (" device %d -- Partition Type: %s\n\n",
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dev_desc->devnum, type);
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#endif /* any CONFIG_..._PARTITION */
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}
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void part_print(struct blk_desc *dev_desc)
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{
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struct part_driver *drv;
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drv = part_driver_lookup_type(dev_desc->part_type);
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if (!drv) {
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printf("## Unknown partition table type %x\n",
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dev_desc->part_type);
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return;
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}
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PRINTF("## Testing for valid %s partition ##\n", drv->name);
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print_part_header(drv->name, dev_desc);
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if (drv->print)
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drv->print(dev_desc);
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}
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#endif /* HAVE_BLOCK_DEVICE */
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int part_get_info(struct blk_desc *dev_desc, int part,
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disk_partition_t *info)
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{
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#ifdef HAVE_BLOCK_DEVICE
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struct part_driver *drv;
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#ifdef CONFIG_PARTITION_UUIDS
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/* The common case is no UUID support */
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info->uuid[0] = 0;
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#endif
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#ifdef CONFIG_PARTITION_TYPE_GUID
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info->type_guid[0] = 0;
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#endif
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drv = part_driver_lookup_type(dev_desc->part_type);
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if (!drv) {
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debug("## Unknown partition table type %x\n",
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dev_desc->part_type);
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return -EPROTONOSUPPORT;
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}
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if (!drv->get_info) {
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PRINTF("## Driver %s does not have the get_info() method\n",
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drv->name);
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return -ENOSYS;
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}
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if (drv->get_info(dev_desc, part, info) == 0) {
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PRINTF("## Valid %s partition found ##\n", drv->name);
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return 0;
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}
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#endif /* HAVE_BLOCK_DEVICE */
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return -1;
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}
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int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
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struct blk_desc **dev_desc)
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{
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char *ep;
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char *dup_str = NULL;
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const char *dev_str, *hwpart_str;
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int dev, hwpart;
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hwpart_str = strchr(dev_hwpart_str, '.');
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if (hwpart_str) {
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dup_str = strdup(dev_hwpart_str);
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dup_str[hwpart_str - dev_hwpart_str] = 0;
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dev_str = dup_str;
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hwpart_str++;
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} else {
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dev_str = dev_hwpart_str;
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hwpart = 0;
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}
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dev = simple_strtoul(dev_str, &ep, 16);
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if (*ep) {
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printf("** Bad device specification %s %s **\n",
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ifname, dev_str);
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dev = -EINVAL;
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goto cleanup;
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}
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if (hwpart_str) {
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hwpart = simple_strtoul(hwpart_str, &ep, 16);
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if (*ep) {
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printf("** Bad HW partition specification %s %s **\n",
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ifname, hwpart_str);
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dev = -EINVAL;
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goto cleanup;
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}
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}
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*dev_desc = get_dev_hwpart(ifname, dev, hwpart);
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if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
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printf("** Bad device %s %s **\n", ifname, dev_hwpart_str);
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dev = -ENOENT;
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goto cleanup;
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}
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#ifdef HAVE_BLOCK_DEVICE
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/*
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* Updates the partition table for the specified hw partition.
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* Does not need to be done for hwpart 0 since it is default and
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* already loaded.
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*/
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if(hwpart != 0)
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part_init(*dev_desc);
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#endif
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cleanup:
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free(dup_str);
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return dev;
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}
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#define PART_UNSPECIFIED -2
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#define PART_AUTO -1
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#define MAX_SEARCH_PARTITIONS 16
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int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
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struct blk_desc **dev_desc,
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disk_partition_t *info, int allow_whole_dev)
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{
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int ret = -1;
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const char *part_str;
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char *dup_str = NULL;
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const char *dev_str;
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int dev;
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char *ep;
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int p;
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int part;
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disk_partition_t tmpinfo;
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#ifdef CONFIG_SANDBOX
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/*
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* Special-case a pseudo block device "hostfs", to allow access to the
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* host's own filesystem.
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*/
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if (0 == strcmp(ifname, "hostfs")) {
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*dev_desc = NULL;
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info->start = 0;
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info->size = 0;
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info->blksz = 0;
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info->bootable = 0;
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strcpy((char *)info->type, BOOT_PART_TYPE);
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strcpy((char *)info->name, "Sandbox host");
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#ifdef CONFIG_PARTITION_UUIDS
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info->uuid[0] = 0;
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#endif
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#ifdef CONFIG_PARTITION_TYPE_GUID
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info->type_guid[0] = 0;
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#endif
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return 0;
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}
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#endif
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#ifdef CONFIG_CMD_UBIFS
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/*
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* Special-case ubi, ubi goes through a mtd, rathen then through
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* a regular block device.
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*/
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if (0 == strcmp(ifname, "ubi")) {
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if (!ubifs_is_mounted()) {
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printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
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return -1;
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}
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*dev_desc = NULL;
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memset(info, 0, sizeof(*info));
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strcpy((char *)info->type, BOOT_PART_TYPE);
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strcpy((char *)info->name, "UBI");
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#ifdef CONFIG_PARTITION_UUIDS
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info->uuid[0] = 0;
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#endif
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return 0;
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}
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#endif
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/* If no dev_part_str, use bootdevice environment variable */
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if (!dev_part_str || !strlen(dev_part_str) ||
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!strcmp(dev_part_str, "-"))
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dev_part_str = getenv("bootdevice");
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/* If still no dev_part_str, it's an error */
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if (!dev_part_str) {
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printf("** No device specified **\n");
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goto cleanup;
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}
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/* Separate device and partition ID specification */
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part_str = strchr(dev_part_str, ':');
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if (part_str) {
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dup_str = strdup(dev_part_str);
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dup_str[part_str - dev_part_str] = 0;
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dev_str = dup_str;
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part_str++;
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} else {
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dev_str = dev_part_str;
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}
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/* Look up the device */
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dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
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if (dev < 0)
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goto cleanup;
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/* Convert partition ID string to number */
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if (!part_str || !*part_str) {
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part = PART_UNSPECIFIED;
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} else if (!strcmp(part_str, "auto")) {
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part = PART_AUTO;
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} else {
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/* Something specified -> use exactly that */
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part = (int)simple_strtoul(part_str, &ep, 16);
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/*
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* Less than whole string converted,
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* or request for whole device, but caller requires partition.
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*/
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if (*ep || (part == 0 && !allow_whole_dev)) {
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printf("** Bad partition specification %s %s **\n",
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ifname, dev_part_str);
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goto cleanup;
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}
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}
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/*
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* No partition table on device,
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* or user requested partition 0 (entire device).
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*/
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if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
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(part == 0)) {
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if (!(*dev_desc)->lba) {
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printf("** Bad device size - %s %s **\n", ifname,
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dev_str);
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goto cleanup;
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}
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/*
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* If user specified a partition ID other than 0,
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* or the calling command only accepts partitions,
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* it's an error.
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*/
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if ((part > 0) || (!allow_whole_dev)) {
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printf("** No partition table - %s %s **\n", ifname,
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dev_str);
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goto cleanup;
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}
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(*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
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info->start = 0;
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info->size = (*dev_desc)->lba;
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info->blksz = (*dev_desc)->blksz;
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info->bootable = 0;
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strcpy((char *)info->type, BOOT_PART_TYPE);
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|
strcpy((char *)info->name, "Whole Disk");
|
|
#ifdef CONFIG_PARTITION_UUIDS
|
|
info->uuid[0] = 0;
|
|
#endif
|
|
#ifdef CONFIG_PARTITION_TYPE_GUID
|
|
info->type_guid[0] = 0;
|
|
#endif
|
|
|
|
ret = 0;
|
|
goto cleanup;
|
|
}
|
|
|
|
/*
|
|
* Now there's known to be a partition table,
|
|
* not specifying a partition means to pick partition 1.
|
|
*/
|
|
if (part == PART_UNSPECIFIED)
|
|
part = 1;
|
|
|
|
/*
|
|
* If user didn't specify a partition number, or did specify something
|
|
* other than "auto", use that partition number directly.
|
|
*/
|
|
if (part != PART_AUTO) {
|
|
ret = part_get_info(*dev_desc, part, info);
|
|
if (ret) {
|
|
printf("** Invalid partition %d **\n", part);
|
|
goto cleanup;
|
|
}
|
|
} else {
|
|
/*
|
|
* Find the first bootable partition.
|
|
* If none are bootable, fall back to the first valid partition.
|
|
*/
|
|
part = 0;
|
|
for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
|
|
ret = part_get_info(*dev_desc, p, info);
|
|
if (ret)
|
|
continue;
|
|
|
|
/*
|
|
* First valid partition, or new better partition?
|
|
* If so, save partition ID.
|
|
*/
|
|
if (!part || info->bootable)
|
|
part = p;
|
|
|
|
/* Best possible partition? Stop searching. */
|
|
if (info->bootable)
|
|
break;
|
|
|
|
/*
|
|
* We now need to search further for best possible.
|
|
* If we what we just queried was the best so far,
|
|
* save the info since we over-write it next loop.
|
|
*/
|
|
if (part == p)
|
|
tmpinfo = *info;
|
|
}
|
|
/* If we found any acceptable partition */
|
|
if (part) {
|
|
/*
|
|
* If we searched all possible partition IDs,
|
|
* return the first valid partition we found.
|
|
*/
|
|
if (p == MAX_SEARCH_PARTITIONS + 1)
|
|
*info = tmpinfo;
|
|
} else {
|
|
printf("** No valid partitions found **\n");
|
|
ret = -1;
|
|
goto cleanup;
|
|
}
|
|
}
|
|
if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
|
|
printf("** Invalid partition type \"%.32s\""
|
|
" (expect \"" BOOT_PART_TYPE "\")\n",
|
|
info->type);
|
|
ret = -1;
|
|
goto cleanup;
|
|
}
|
|
|
|
(*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
|
|
|
|
ret = part;
|
|
goto cleanup;
|
|
|
|
cleanup:
|
|
free(dup_str);
|
|
return ret;
|
|
}
|
|
|
|
int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
|
|
disk_partition_t *info)
|
|
{
|
|
struct part_driver *first_drv =
|
|
ll_entry_start(struct part_driver, part_driver);
|
|
const int n_drvs = ll_entry_count(struct part_driver, part_driver);
|
|
struct part_driver *part_drv;
|
|
|
|
for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
|
|
int ret;
|
|
int i;
|
|
for (i = 1; i < part_drv->max_entries; i++) {
|
|
ret = part_drv->get_info(dev_desc, i, info);
|
|
if (ret != 0) {
|
|
/* no more entries in table */
|
|
break;
|
|
}
|
|
if (strcmp(name, (const char *)info->name) == 0) {
|
|
/* matched */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|