[thirdparty/linux.git] / init / do_mounts_rd.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/minix_fs.h>
#include <linux/ext2_fs.h>
#include <linux/romfs_fs.h>
#include <uapi/linux/cramfs_fs.h>
#include <linux/initrd.h>
#include <linux/string.h>
#include <linux/slab.h>

#include "do_mounts.h"
#include "../fs/squashfs/squashfs_fs.h"

#include <linux/decompress/generic.h>


static int __init prompt_ramdisk(char *str)
{
	pr_warn("ignoring the deprecated prompt_ramdisk= option\n");
	return 1;
}
__setup("prompt_ramdisk=", prompt_ramdisk);

int __initdata rd_image_start;		/* starting block # of image */

static int __init ramdisk_start_setup(char *str)
{
	rd_image_start = simple_strtol(str,NULL,0);
	return 1;
}
__setup("ramdisk_start=", ramdisk_start_setup);

static int __init crd_load(int in_fd, int out_fd, decompress_fn deco);

/*
 * This routine tries to find a RAM disk image to load, and returns the
 * number of blocks to read for a non-compressed image, 0 if the image
 * is a compressed image, and -1 if an image with the right magic
 * numbers could not be found.
 *
 * We currently check for the following magic numbers:
 *	minix
 *	ext2
 *	romfs
 *	cramfs
 *	squashfs
 *	gzip
 *	bzip2
 *	lzma
 *	xz
 *	lzo
 *	lz4
 */
static int __init
identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor)
{
	const int size = 512;
	struct minix_super_block *minixsb;
	struct romfs_super_block *romfsb;
	struct cramfs_super *cramfsb;
	struct squashfs_super_block *squashfsb;
	int nblocks = -1;
	unsigned char *buf;
	const char *compress_name;
	unsigned long n;

	buf = kmalloc(size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	minixsb = (struct minix_super_block *) buf;
	romfsb = (struct romfs_super_block *) buf;
	cramfsb = (struct cramfs_super *) buf;
	squashfsb = (struct squashfs_super_block *) buf;
	memset(buf, 0xe5, size);

	/*
	 * Read block 0 to test for compressed kernel
	 */
	ksys_lseek(fd, start_block * BLOCK_SIZE, 0);
	ksys_read(fd, buf, size);

	*decompressor = decompress_method(buf, size, &compress_name);
	if (compress_name) {
		printk(KERN_NOTICE "RAMDISK: %s image found at block %d\n",
		       compress_name, start_block);
		if (!*decompressor)
			printk(KERN_EMERG
			       "RAMDISK: %s decompressor not configured!\n",
			       compress_name);
		nblocks = 0;
		goto done;
	}

	/* romfs is at block zero too */
	if (romfsb->word0 == ROMSB_WORD0 &&
	    romfsb->word1 == ROMSB_WORD1) {
		printk(KERN_NOTICE
		       "RAMDISK: romfs filesystem found at block %d\n",
		       start_block);
		nblocks = (ntohl(romfsb->size)+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
		goto done;
	}

	if (cramfsb->magic == CRAMFS_MAGIC) {
		printk(KERN_NOTICE
		       "RAMDISK: cramfs filesystem found at block %d\n",
		       start_block);
		nblocks = (cramfsb->size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
		goto done;
	}

	/* squashfs is at block zero too */
	if (le32_to_cpu(squashfsb->s_magic) == SQUASHFS_MAGIC) {
		printk(KERN_NOTICE
		       "RAMDISK: squashfs filesystem found at block %d\n",
		       start_block);
		nblocks = (le64_to_cpu(squashfsb->bytes_used) + BLOCK_SIZE - 1)
			 >> BLOCK_SIZE_BITS;
		goto done;
	}

	/*
	 * Read 512 bytes further to check if cramfs is padded
	 */
	ksys_lseek(fd, start_block * BLOCK_SIZE + 0x200, 0);
	ksys_read(fd, buf, size);

	if (cramfsb->magic == CRAMFS_MAGIC) {
		printk(KERN_NOTICE
		       "RAMDISK: cramfs filesystem found at block %d\n",
		       start_block);
		nblocks = (cramfsb->size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
		goto done;
	}

	/*
	 * Read block 1 to test for minix and ext2 superblock
	 */
	ksys_lseek(fd, (start_block+1) * BLOCK_SIZE, 0);
	ksys_read(fd, buf, size);

	/* Try minix */
	if (minixsb->s_magic == MINIX_SUPER_MAGIC ||
	    minixsb->s_magic == MINIX_SUPER_MAGIC2) {
		printk(KERN_NOTICE
		       "RAMDISK: Minix filesystem found at block %d\n",
		       start_block);
		nblocks = minixsb->s_nzones << minixsb->s_log_zone_size;
		goto done;
	}

	/* Try ext2 */
	n = ext2_image_size(buf);
	if (n) {
		printk(KERN_NOTICE
		       "RAMDISK: ext2 filesystem found at block %d\n",
		       start_block);
		nblocks = n;
		goto done;
	}

	printk(KERN_NOTICE
	       "RAMDISK: Couldn't find valid RAM disk image starting at %d.\n",
	       start_block);

done:
	ksys_lseek(fd, start_block * BLOCK_SIZE, 0);
	kfree(buf);
	return nblocks;
}

int __init rd_load_image(char *from)
{
	int res = 0;
	int in_fd, out_fd;
	unsigned long rd_blocks, devblocks;
	int nblocks, i;
	char *buf = NULL;
	unsigned short rotate = 0;
	decompress_fn decompressor = NULL;
#if !defined(CONFIG_S390)
	char rotator[4] = { '|' , '/' , '-' , '\\' };
#endif

	out_fd = ksys_open("/dev/ram", O_RDWR, 0);
	if (out_fd < 0)
		goto out;

	in_fd = ksys_open(from, O_RDONLY, 0);
	if (in_fd < 0)
		goto noclose_input;

	nblocks = identify_ramdisk_image(in_fd, rd_image_start, &decompressor);
	if (nblocks < 0)
		goto done;

	if (nblocks == 0) {
		if (crd_load(in_fd, out_fd, decompressor) == 0)
			goto successful_load;
		goto done;
	}

	/*
	 * NOTE NOTE: nblocks is not actually blocks but
	 * the number of kibibytes of data to load into a ramdisk.
	 */
	if (ksys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0)
		rd_blocks = 0;
	else
		rd_blocks >>= 1;

	if (nblocks > rd_blocks) {
		printk("RAMDISK: image too big! (%dKiB/%ldKiB)\n",
		       nblocks, rd_blocks);
		goto done;
	}

	/*
	 * OK, time to copy in the data
	 */
	if (ksys_ioctl(in_fd, BLKGETSIZE, (unsigned long)&devblocks) < 0)
		devblocks = 0;
	else
		devblocks >>= 1;

	if (strcmp(from, "/initrd.image") == 0)
		devblocks = nblocks;

	if (devblocks == 0) {
		printk(KERN_ERR "RAMDISK: could not determine device size\n");
		goto done;
	}

	buf = kmalloc(BLOCK_SIZE, GFP_KERNEL);
	if (!buf) {
		printk(KERN_ERR "RAMDISK: could not allocate buffer\n");
		goto done;
	}

	printk(KERN_NOTICE "RAMDISK: Loading %dKiB [%ld disk%s] into ram disk... ",
		nblocks, ((nblocks-1)/devblocks)+1, nblocks>devblocks ? "s" : "");
	for (i = 0; i < nblocks; i++) {
		if (i && (i % devblocks == 0)) {
			pr_cont("done disk #1.\n");
			rotate = 0;
			if (ksys_close(in_fd)) {
				printk("Error closing the disk.\n");
				goto noclose_input;
			}
			break;
		}
		ksys_read(in_fd, buf, BLOCK_SIZE);
		ksys_write(out_fd, buf, BLOCK_SIZE);
#if !defined(CONFIG_S390)
		if (!(i % 16)) {
			pr_cont("%c\b", rotator[rotate & 0x3]);
			rotate++;
		}
#endif
	}
	pr_cont("done.\n");

successful_load:
	res = 1;
done:
	ksys_close(in_fd);
noclose_input:
	ksys_close(out_fd);
out:
	kfree(buf);
	ksys_unlink("/dev/ram");
	return res;
}

int __init rd_load_disk(int n)
{
	create_dev("/dev/root", ROOT_DEV);
	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n));
	return rd_load_image("/dev/root");
}

static int exit_code;
static int decompress_error;
static int crd_infd, crd_outfd;

static long __init compr_fill(void *buf, unsigned long len)
{
	long r = ksys_read(crd_infd, buf, len);
	if (r < 0)
		printk(KERN_ERR "RAMDISK: error while reading compressed data");
	else if (r == 0)
		printk(KERN_ERR "RAMDISK: EOF while reading compressed data");
	return r;
}

static long __init compr_flush(void *window, unsigned long outcnt)
{
	long written = ksys_write(crd_outfd, window, outcnt);
	if (written != outcnt) {
		if (decompress_error == 0)
			printk(KERN_ERR
			       "RAMDISK: incomplete write (%ld != %ld)\n",
			       written, outcnt);
		decompress_error = 1;
		return -1;
	}
	return outcnt;
}

static void __init error(char *x)
{
	printk(KERN_ERR "%s\n", x);
	exit_code = 1;
	decompress_error = 1;
}

static int __init crd_load(int in_fd, int out_fd, decompress_fn deco)
{
	int result;
	crd_infd = in_fd;
	crd_outfd = out_fd;

	if (!deco) {
		pr_emerg("Invalid ramdisk decompression routine.  "
			 "Select appropriate config option.\n");
		panic("Could not decompress initial ramdisk image.");
	}

	result = deco(NULL, 0, compr_fill, compr_flush, NULL, NULL, error);
	if (decompress_error)
		result = 1;
	return result;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	#include <linux/kernel.h>
	3	#include <linux/fs.h>
	4	#include <linux/minix_fs.h>
	5	#include <linux/ext2_fs.h>
	6	#include <linux/romfs_fs.h>
f7f4f4dd	7	#include <uapi/linux/cramfs_fs.h>
1da177e4 LT	8	#include <linux/initrd.h>
1da177e4 LT	9	#include <linux/string.h>
5a0e3ad6	10	#include <linux/slab.h>
1da177e4 LT	11
1da177e4 LT	12	#include "do_mounts.h"
b8fed87d	13	#include "../fs/squashfs/squashfs_fs.h"
1da177e4	14
30d65dbf AK	15	#include <linux/decompress/generic.h>
30d65dbf AK	16
30d65dbf	17
1da177e4 LT	18	static int __init prompt_ramdisk(char *str)
1da177e4 LT	19	{
c8376994	20	pr_warn("ignoring the deprecated prompt_ramdisk= option\n");
1da177e4 LT	21	return 1;
	22	}
	23	__setup("prompt_ramdisk=", prompt_ramdisk);
	24
	25	int __initdata rd_image_start; /* starting block # of image */
	26
	27	static int __init ramdisk_start_setup(char *str)
	28	{
	29	rd_image_start = simple_strtol(str,NULL,0);
	30	return 1;
	31	}
	32	__setup("ramdisk_start=", ramdisk_start_setup);
	33
30d65dbf	34	static int __init crd_load(int in_fd, int out_fd, decompress_fn deco);
1da177e4 LT	35
	36	/*
	37	* This routine tries to find a RAM disk image to load, and returns the
	38	* number of blocks to read for a non-compressed image, 0 if the image
	39	* is a compressed image, and -1 if an image with the right magic
	40	* numbers could not be found.
	41	*
	42	* We currently check for the following magic numbers:
b172fd88 PA	43	* minix
b172fd88 PA	44	* ext2
1da177e4 LT	45	* romfs
1da177e4 LT	46	* cramfs
b8fed87d	47	* squashfs
b172fd88	48	* gzip
1bf49dd4	49	* bzip2
	50	* lzma
	51	* xz
	52	* lzo
	53	* lz4
1da177e4	54	*/
b172fd88	55	static int __init
30d65dbf	56	identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor)
1da177e4 LT	57	{
	58	const int size = 512;
	59	struct minix_super_block *minixsb;
1da177e4 LT	60	struct romfs_super_block *romfsb;
1da177e4 LT	61	struct cramfs_super *cramfsb;
b8fed87d	62	struct squashfs_super_block *squashfsb;
1da177e4 LT	63	int nblocks = -1;
1da177e4 LT	64	unsigned char *buf;
889c92d2	65	const char *compress_name;
39429c5e	66	unsigned long n;
1da177e4 LT	67
1da177e4 LT	68	buf = kmalloc(size, GFP_KERNEL);
c80544dc	69	if (!buf)
ea611b26	70	return -ENOMEM;
1da177e4 LT	71
1da177e4 LT	72	minixsb = (struct minix_super_block *) buf;
1da177e4 LT	73	romfsb = (struct romfs_super_block *) buf;
1da177e4 LT	74	cramfsb = (struct cramfs_super *) buf;
b8fed87d	75	squashfsb = (struct squashfs_super_block *) buf;
1da177e4 LT	76	memset(buf, 0xe5, size);
	77
	78	/*
b172fd88	79	* Read block 0 to test for compressed kernel
1da177e4	80	*/
76847e43	81	ksys_lseek(fd, start_block * BLOCK_SIZE, 0);
3ce4a7bf	82	ksys_read(fd, buf, size);
1da177e4	83
889c92d2	84	*decompressor = decompress_method(buf, size, &compress_name);
23a22d57	85	if (compress_name) {
889c92d2 PA	86	printk(KERN_NOTICE "RAMDISK: %s image found at block %d\n",
889c92d2 PA	87	compress_name, start_block);
23a22d57	88	if (!*decompressor)
73310a16 PA	89	printk(KERN_EMERG
73310a16 PA	90	"RAMDISK: %s decompressor not configured!\n",
23a22d57	91	compress_name);
889c92d2 PA	92	nblocks = 0;
889c92d2 PA	93	goto done;
1da177e4 LT	94	}
	95
	96	/* romfs is at block zero too */
	97	if (romfsb->word0 == ROMSB_WORD0 &&
	98	romfsb->word1 == ROMSB_WORD1) {
	99	printk(KERN_NOTICE
	100	"RAMDISK: romfs filesystem found at block %d\n",
	101	start_block);
	102	nblocks = (ntohl(romfsb->size)+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
	103	goto done;
	104	}
	105
	106	if (cramfsb->magic == CRAMFS_MAGIC) {
	107	printk(KERN_NOTICE
	108	"RAMDISK: cramfs filesystem found at block %d\n",
	109	start_block);
	110	nblocks = (cramfsb->size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
	111	goto done;
	112	}
	113
b8fed87d PL	114	/* squashfs is at block zero too */
	115	if (le32_to_cpu(squashfsb->s_magic) == SQUASHFS_MAGIC) {
	116	printk(KERN_NOTICE
	117	"RAMDISK: squashfs filesystem found at block %d\n",
	118	start_block);
	119	nblocks = (le64_to_cpu(squashfsb->bytes_used) + BLOCK_SIZE - 1)
	120	>> BLOCK_SIZE_BITS;
	121	goto done;
	122	}
	123
f919b923 NA	124	/*
	125	* Read 512 bytes further to check if cramfs is padded
	126	*/
76847e43	127	ksys_lseek(fd, start_block * BLOCK_SIZE + 0x200, 0);
3ce4a7bf	128	ksys_read(fd, buf, size);
f919b923 NA	129
	130	if (cramfsb->magic == CRAMFS_MAGIC) {
	131	printk(KERN_NOTICE
	132	"RAMDISK: cramfs filesystem found at block %d\n",
	133	start_block);
	134	nblocks = (cramfsb->size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
	135	goto done;
	136	}
	137
1da177e4 LT	138	/*
	139	* Read block 1 to test for minix and ext2 superblock
	140	*/
76847e43	141	ksys_lseek(fd, (start_block+1) * BLOCK_SIZE, 0);
3ce4a7bf	142	ksys_read(fd, buf, size);
1da177e4 LT	143
	144	/* Try minix */
	145	if (minixsb->s_magic == MINIX_SUPER_MAGIC \|\|
	146	minixsb->s_magic == MINIX_SUPER_MAGIC2) {
	147	printk(KERN_NOTICE
	148	"RAMDISK: Minix filesystem found at block %d\n",
	149	start_block);
	150	nblocks = minixsb->s_nzones << minixsb->s_log_zone_size;
	151	goto done;
	152	}
	153
	154	/* Try ext2 */
39429c5e AV	155	n = ext2_image_size(buf);
39429c5e AV	156	if (n) {
1da177e4 LT	157	printk(KERN_NOTICE
	158	"RAMDISK: ext2 filesystem found at block %d\n",
	159	start_block);
39429c5e	160	nblocks = n;
1da177e4 LT	161	goto done;
	162	}
	163
	164	printk(KERN_NOTICE
	165	"RAMDISK: Couldn't find valid RAM disk image starting at %d.\n",
	166	start_block);
b172fd88	167
1da177e4	168	done:
76847e43	169	ksys_lseek(fd, start_block * BLOCK_SIZE, 0);
1da177e4 LT	170	kfree(buf);
	171	return nblocks;
	172	}
	173
	174	int __init rd_load_image(char *from)
	175	{
	176	int res = 0;
	177	int in_fd, out_fd;
	178	unsigned long rd_blocks, devblocks;
c8376994	179	int nblocks, i;
1da177e4 LT	180	char *buf = NULL;
1da177e4 LT	181	unsigned short rotate = 0;
30d65dbf	182	decompress_fn decompressor = NULL;
bc58450b	183	#if !defined(CONFIG_S390)
1da177e4 LT	184	char rotator[4] = { '\|' , '/' , '-' , '\\' };
	185	#endif
	186
bae217ea	187	out_fd = ksys_open("/dev/ram", O_RDWR, 0);
1da177e4 LT	188	if (out_fd < 0)
	189	goto out;
	190
bae217ea	191	in_fd = ksys_open(from, O_RDONLY, 0);
1da177e4 LT	192	if (in_fd < 0)
	193	goto noclose_input;
	194
30d65dbf	195	nblocks = identify_ramdisk_image(in_fd, rd_image_start, &decompressor);
1da177e4 LT	196	if (nblocks < 0)
	197	goto done;
	198
	199	if (nblocks == 0) {
30d65dbf	200	if (crd_load(in_fd, out_fd, decompressor) == 0)
1da177e4	201	goto successful_load;
1da177e4 LT	202	goto done;
	203	}
	204
	205	/*
	206	* NOTE NOTE: nblocks is not actually blocks but
	207	* the number of kibibytes of data to load into a ramdisk.
1da177e4	208	*/
cbb60b92	209	if (ksys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0)
1da177e4 LT	210	rd_blocks = 0;
	211	else
	212	rd_blocks >>= 1;
	213
	214	if (nblocks > rd_blocks) {
	215	printk("RAMDISK: image too big! (%dKiB/%ldKiB)\n",
	216	nblocks, rd_blocks);
	217	goto done;
	218	}
b172fd88	219
1da177e4 LT	220	/*
	221	* OK, time to copy in the data
	222	*/
cbb60b92	223	if (ksys_ioctl(in_fd, BLKGETSIZE, (unsigned long)&devblocks) < 0)
1da177e4 LT	224	devblocks = 0;
	225	else
	226	devblocks >>= 1;
	227
	228	if (strcmp(from, "/initrd.image") == 0)
	229	devblocks = nblocks;
	230
	231	if (devblocks == 0) {
	232	printk(KERN_ERR "RAMDISK: could not determine device size\n");
	233	goto done;
	234	}
	235
	236	buf = kmalloc(BLOCK_SIZE, GFP_KERNEL);
d613c3e2	237	if (!buf) {
1da177e4 LT	238	printk(KERN_ERR "RAMDISK: could not allocate buffer\n");
	239	goto done;
	240	}
	241
	242	printk(KERN_NOTICE "RAMDISK: Loading %dKiB [%ld disk%s] into ram disk... ",
	243	nblocks, ((nblocks-1)/devblocks)+1, nblocks>devblocks ? "s" : "");
c8376994	244	for (i = 0; i < nblocks; i++) {
1da177e4	245	if (i && (i % devblocks == 0)) {
c8376994	246	pr_cont("done disk #1.\n");
1da177e4	247	rotate = 0;
2ca2a09d	248	if (ksys_close(in_fd)) {
1da177e4 LT	249	printk("Error closing the disk.\n");
	250	goto noclose_input;
	251	}
c8376994	252	break;
1da177e4	253	}
3ce4a7bf	254	ksys_read(in_fd, buf, BLOCK_SIZE);
e7a3e8b2	255	ksys_write(out_fd, buf, BLOCK_SIZE);
bc58450b	256	#if !defined(CONFIG_S390)
1da177e4	257	if (!(i % 16)) {
18594e9b	258	pr_cont("%c\b", rotator[rotate & 0x3]);
1da177e4 LT	259	rotate++;
	260	}
	261	#endif
	262	}
1a6a05a4	263	pr_cont("done.\n");
1da177e4 LT	264
	265	successful_load:
	266	res = 1;
	267	done:
2ca2a09d	268	ksys_close(in_fd);
1da177e4	269	noclose_input:
2ca2a09d	270	ksys_close(out_fd);
1da177e4 LT	271	out:
1da177e4 LT	272	kfree(buf);
0f32ab8c	273	ksys_unlink("/dev/ram");
1da177e4 LT	274	return res;
	275	}
	276
	277	int __init rd_load_disk(int n)
	278	{
bdaf8529 GKH	279	create_dev("/dev/root", ROOT_DEV);
bdaf8529 GKH	280	create_dev("/dev/ram", MKDEV(RAMDISK_MAJOR, n));
1da177e4 LT	281	return rd_load_image("/dev/root");
	282	}
	283
1da177e4	284	static int exit_code;
30d65dbf	285	static int decompress_error;
1da177e4 LT	286	static int crd_infd, crd_outfd;
1da177e4 LT	287
d97b07c5	288	static long __init compr_fill(void *buf, unsigned long len)
1da177e4	289	{
3ce4a7bf	290	long r = ksys_read(crd_infd, buf, len);
30d65dbf AK	291	if (r < 0)
	292	printk(KERN_ERR "RAMDISK: error while reading compressed data");
	293	else if (r == 0)
	294	printk(KERN_ERR "RAMDISK: EOF while reading compressed data");
	295	return r;
1da177e4 LT	296	}
1da177e4 LT	297
d97b07c5	298	static long __init compr_flush(void *window, unsigned long outcnt)
1da177e4	299	{
e7a3e8b2	300	long written = ksys_write(crd_outfd, window, outcnt);
30d65dbf AK	301	if (written != outcnt) {
	302	if (decompress_error == 0)
	303	printk(KERN_ERR
d97b07c5	304	"RAMDISK: incomplete write (%ld != %ld)\n",
30d65dbf AK	305	written, outcnt);
	306	decompress_error = 1;
	307	return -1;
	308	}
	309	return outcnt;
1da177e4 LT	310	}
	311
	312	static void __init error(char *x)
	313	{
	314	printk(KERN_ERR "%s\n", x);
	315	exit_code = 1;
30d65dbf	316	decompress_error = 1;
1da177e4 LT	317	}
1da177e4 LT	318
30d65dbf	319	static int __init crd_load(int in_fd, int out_fd, decompress_fn deco)
1da177e4 LT	320	{
1da177e4 LT	321	int result;
1da177e4 LT	322	crd_infd = in_fd;
1da177e4 LT	323	crd_outfd = out_fd;
df3ef3af	324
	325	if (!deco) {
	326	pr_emerg("Invalid ramdisk decompression routine. "
	327	"Select appropriate config option.\n");
	328	panic("Could not decompress initial ramdisk image.");
	329	}
	330
30d65dbf AK	331	result = deco(NULL, 0, compr_fill, compr_flush, NULL, NULL, error);
30d65dbf AK	332	if (decompress_error)
1da177e4	333	result = 1;
1da177e4 LT	334	return result;
1da177e4 LT	335	}