diff options
| -rw-r--r-- | block/Makefile | 3 | ||||
| -rw-r--r-- | block/partitions/Makefile | 3 | ||||
| -rw-r--r-- | block/partitions/check.c | 179 | ||||
| -rw-r--r-- | block/partitions/check.h | 5 | ||||
| -rw-r--r-- | block/partitions/core.c (renamed from block/partition-generic.c) | 178 |
5 files changed, 166 insertions, 202 deletions
diff --git a/block/Makefile b/block/Makefile index 1a43750f4b01..206b96e9387f 100644 --- a/block/Makefile +++ b/block/Makefile @@ -8,8 +8,7 @@ obj-$(CONFIG_BLOCK) := bio.o elevator.o blk-core.o blk-sysfs.o \ blk-exec.o blk-merge.o blk-softirq.o blk-timeout.o \ blk-lib.o blk-mq.o blk-mq-tag.o blk-stat.o \ blk-mq-sysfs.o blk-mq-cpumap.o blk-mq-sched.o ioctl.o \ - genhd.o partition-generic.o ioprio.o \ - badblocks.o partitions/ blk-rq-qos.o + genhd.o ioprio.o badblocks.o partitions/ blk-rq-qos.o obj-$(CONFIG_BOUNCE) += bounce.o obj-$(CONFIG_BLK_SCSI_REQUEST) += scsi_ioctl.o diff --git a/block/partitions/Makefile b/block/partitions/Makefile index 2f276b677c81..a7f05cdb02a8 100644 --- a/block/partitions/Makefile +++ b/block/partitions/Makefile @@ -3,8 +3,7 @@ # Makefile for the linux kernel. # -obj-$(CONFIG_BLOCK) := check.o - +obj-$(CONFIG_BLOCK) += core.o obj-$(CONFIG_ACORN_PARTITION) += acorn.o obj-$(CONFIG_AMIGA_PARTITION) += amiga.o obj-$(CONFIG_ATARI_PARTITION) += atari.o diff --git a/block/partitions/check.c b/block/partitions/check.c deleted file mode 100644 index 944c478b6f0b..000000000000 --- a/block/partitions/check.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * fs/partitions/check.c - * - * Code extracted from drivers/block/genhd.c - * Copyright (C) 1991-1998 Linus Torvalds - * Re-organised Feb 1998 Russell King - * - * We now have independent partition support from the - * block drivers, which allows all the partition code to - * be grouped in one location, and it to be mostly self - * contained. - * - * Added needed MAJORS for new pairs, {hdi,hdj}, {hdk,hdl} - */ - -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/ctype.h> -#include <linux/genhd.h> - -#include "check.h" - -static int (*check_part[])(struct parsed_partitions *) = { - /* - * Probe partition formats with tables at disk address 0 - * that also have an ADFS boot block at 0xdc0. - */ -#ifdef CONFIG_ACORN_PARTITION_ICS - adfspart_check_ICS, -#endif -#ifdef CONFIG_ACORN_PARTITION_POWERTEC - adfspart_check_POWERTEC, -#endif -#ifdef CONFIG_ACORN_PARTITION_EESOX - adfspart_check_EESOX, -#endif - - /* - * Now move on to formats that only have partition info at - * disk address 0xdc0. Since these may also have stale - * PC/BIOS partition tables, they need to come before - * the msdos entry. - */ -#ifdef CONFIG_ACORN_PARTITION_CUMANA - adfspart_check_CUMANA, -#endif -#ifdef CONFIG_ACORN_PARTITION_ADFS - adfspart_check_ADFS, -#endif - -#ifdef CONFIG_CMDLINE_PARTITION - cmdline_partition, -#endif -#ifdef CONFIG_EFI_PARTITION - efi_partition, /* this must come before msdos */ -#endif -#ifdef CONFIG_SGI_PARTITION - sgi_partition, -#endif -#ifdef CONFIG_LDM_PARTITION - ldm_partition, /* this must come before msdos */ -#endif -#ifdef CONFIG_MSDOS_PARTITION - msdos_partition, -#endif -#ifdef CONFIG_OSF_PARTITION - osf_partition, -#endif -#ifdef CONFIG_SUN_PARTITION - sun_partition, -#endif -#ifdef CONFIG_AMIGA_PARTITION - amiga_partition, -#endif -#ifdef CONFIG_ATARI_PARTITION - atari_partition, -#endif -#ifdef CONFIG_MAC_PARTITION - mac_partition, -#endif -#ifdef CONFIG_ULTRIX_PARTITION - ultrix_partition, -#endif -#ifdef CONFIG_IBM_PARTITION - ibm_partition, -#endif -#ifdef CONFIG_KARMA_PARTITION - karma_partition, -#endif -#ifdef CONFIG_SYSV68_PARTITION - sysv68_partition, -#endif - NULL -}; - -static struct parsed_partitions *allocate_partitions(struct gendisk *hd) -{ - struct parsed_partitions *state; - int nr; - - state = kzalloc(sizeof(*state), GFP_KERNEL); - if (!state) - return NULL; - - nr = disk_max_parts(hd); - state->parts = vzalloc(array_size(nr, sizeof(state->parts[0]))); - if (!state->parts) { - kfree(state); - return NULL; - } - - state->limit = nr; - - return state; -} - -void free_partitions(struct parsed_partitions *state) -{ - vfree(state->parts); - kfree(state); -} - -struct parsed_partitions * -check_partition(struct gendisk *hd, struct block_device *bdev) -{ - struct parsed_partitions *state; - int i, res, err; - - state = allocate_partitions(hd); - if (!state) - return NULL; - state->pp_buf = (char *)__get_free_page(GFP_KERNEL); - if (!state->pp_buf) { - free_partitions(state); - return NULL; - } - state->pp_buf[0] = '\0'; - - state->bdev = bdev; - disk_name(hd, 0, state->name); - snprintf(state->pp_buf, PAGE_SIZE, " %s:", state->name); - if (isdigit(state->name[strlen(state->name)-1])) - sprintf(state->name, "p"); - - i = res = err = 0; - while (!res && check_part[i]) { - memset(state->parts, 0, state->limit * sizeof(state->parts[0])); - res = check_part[i++](state); - if (res < 0) { - /* We have hit an I/O error which we don't report now. - * But record it, and let the others do their job. - */ - err = res; - res = 0; - } - - } - if (res > 0) { - printk(KERN_INFO "%s", state->pp_buf); - - free_page((unsigned long)state->pp_buf); - return state; - } - if (state->access_beyond_eod) - err = -ENOSPC; - if (err) - /* The partition is unrecognized. So report I/O errors if there were any */ - res = err; - if (res) { - strlcat(state->pp_buf, - " unable to read partition table\n", PAGE_SIZE); - printk(KERN_INFO "%s", state->pp_buf); - } - - free_page((unsigned long)state->pp_buf); - free_partitions(state); - return ERR_PTR(res); -} diff --git a/block/partitions/check.h b/block/partitions/check.h index 23e7adb79617..f845355489ec 100644 --- a/block/partitions/check.h +++ b/block/partitions/check.h @@ -23,11 +23,6 @@ struct parsed_partitions { char *pp_buf; }; -void free_partitions(struct parsed_partitions *state); - -struct parsed_partitions * -check_partition(struct gendisk *, struct block_device *); - typedef struct { struct page *v; } Sector; diff --git a/block/partition-generic.c b/block/partitions/core.c index 4d771ae835ed..b442bc209b86 100644 --- a/block/partition-generic.c +++ b/block/partitions/core.c @@ -1,27 +1,177 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Code extracted from drivers/block/genhd.c - * Copyright (C) 1991-1998 Linus Torvalds - * Re-organised Feb 1998 Russell King - * - * We now have independent partition support from the - * block drivers, which allows all the partition code to - * be grouped in one location, and it to be mostly self - * contained. + * Copyright (C) 1991-1998 Linus Torvalds + * Re-organised Feb 1998 Russell King */ - -#include <linux/init.h> -#include <linux/module.h> #include <linux/fs.h> #include <linux/slab.h> -#include <linux/kmod.h> #include <linux/ctype.h> #include <linux/genhd.h> +#include <linux/vmalloc.h> #include <linux/blktrace_api.h> #include <linux/raid/detect.h> -#include "blk.h" +#include "../blk.h" +#include "check.h" + +static int (*check_part[])(struct parsed_partitions *) = { + /* + * Probe partition formats with tables at disk address 0 + * that also have an ADFS boot block at 0xdc0. + */ +#ifdef CONFIG_ACORN_PARTITION_ICS + adfspart_check_ICS, +#endif +#ifdef CONFIG_ACORN_PARTITION_POWERTEC + adfspart_check_POWERTEC, +#endif +#ifdef CONFIG_ACORN_PARTITION_EESOX + adfspart_check_EESOX, +#endif + + /* + * Now move on to formats that only have partition info at + * disk address 0xdc0. Since these may also have stale + * PC/BIOS partition tables, they need to come before + * the msdos entry. + */ +#ifdef CONFIG_ACORN_PARTITION_CUMANA + adfspart_check_CUMANA, +#endif +#ifdef CONFIG_ACORN_PARTITION_ADFS + adfspart_check_ADFS, +#endif + +#ifdef CONFIG_CMDLINE_PARTITION + cmdline_partition, +#endif +#ifdef CONFIG_EFI_PARTITION + efi_partition, /* this must come before msdos */ +#endif +#ifdef CONFIG_SGI_PARTITION + sgi_partition, +#endif +#ifdef CONFIG_LDM_PARTITION + ldm_partition, /* this must come before msdos */ +#endif +#ifdef CONFIG_MSDOS_PARTITION + msdos_partition, +#endif +#ifdef CONFIG_OSF_PARTITION + osf_partition, +#endif +#ifdef CONFIG_SUN_PARTITION + sun_partition, +#endif +#ifdef CONFIG_AMIGA_PARTITION + amiga_partition, +#endif +#ifdef CONFIG_ATARI_PARTITION + atari_partition, +#endif +#ifdef CONFIG_MAC_PARTITION + mac_partition, +#endif +#ifdef CONFIG_ULTRIX_PARTITION + ultrix_partition, +#endif +#ifdef CONFIG_IBM_PARTITION + ibm_partition, +#endif +#ifdef CONFIG_KARMA_PARTITION + karma_partition, +#endif +#ifdef CONFIG_SYSV68_PARTITION + sysv68_partition, +#endif + NULL +}; + +static struct parsed_partitions *allocate_partitions(struct gendisk *hd) +{ + struct parsed_partitions *state; + int nr; -#include "partitions/check.h" + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; + + nr = disk_max_parts(hd); + state->parts = vzalloc(array_size(nr, sizeof(state->parts[0]))); + if (!state->parts) { + kfree(state); + return NULL; + } + + state->limit = nr; + + return state; +} + +static void free_partitions(struct parsed_partitions *state) +{ + vfree(state->parts); + kfree(state); +} + +static struct parsed_partitions *check_partition(struct gendisk *hd, + struct block_device *bdev) +{ + struct parsed_partitions *state; + int i, res, err; + + state = allocate_partitions(hd); + if (!state) + return NULL; + state->pp_buf = (char *)__get_free_page(GFP_KERNEL); + if (!state->pp_buf) { + free_partitions(state); + return NULL; + } + state->pp_buf[0] = '\0'; + + state->bdev = bdev; + disk_name(hd, 0, state->name); + snprintf(state->pp_buf, PAGE_SIZE, " %s:", state->name); + if (isdigit(state->name[strlen(state->name)-1])) + sprintf(state->name, "p"); + + i = res = err = 0; + while (!res && check_part[i]) { + memset(state->parts, 0, state->limit * sizeof(state->parts[0])); + res = check_part[i++](state); + if (res < 0) { + /* + * We have hit an I/O error which we don't report now. + * But record it, and let the others do their job. + */ + err = res; + res = 0; + } + + } + if (res > 0) { + printk(KERN_INFO "%s", state->pp_buf); + + free_page((unsigned long)state->pp_buf); + return state; + } + if (state->access_beyond_eod) + err = -ENOSPC; + /* + * The partition is unrecognized. So report I/O errors if there were any + */ + if (err) + res = err; + if (res) { + strlcat(state->pp_buf, + " unable to read partition table\n", PAGE_SIZE); + printk(KERN_INFO "%s", state->pp_buf); + } + + free_page((unsigned long)state->pp_buf); + free_partitions(state); + return ERR_PTR(res); +} static ssize_t part_partition_show(struct device *dev, struct device_attribute *attr, char *buf) |