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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/jffs2/compr_lzo.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/jffs2/compr_lzo.c')
-rw-r--r-- | ANDROID_3.4.5/fs/jffs2/compr_lzo.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/ANDROID_3.4.5/fs/jffs2/compr_lzo.c b/ANDROID_3.4.5/fs/jffs2/compr_lzo.c deleted file mode 100644 index c553bd65..00000000 --- a/ANDROID_3.4.5/fs/jffs2/compr_lzo.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * JFFS2 -- Journalling Flash File System, Version 2. - * - * Copyright © 2007 Nokia Corporation. All rights reserved. - * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org> - * - * Created by Richard Purdie <rpurdie@openedhand.com> - * - * For licensing information, see the file 'LICENCE' in this directory. - * - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/vmalloc.h> -#include <linux/init.h> -#include <linux/lzo.h> -#include "compr.h" - -static void *lzo_mem; -static void *lzo_compress_buf; -static DEFINE_MUTEX(deflate_mutex); /* for lzo_mem and lzo_compress_buf */ - -static void free_workspace(void) -{ - vfree(lzo_mem); - vfree(lzo_compress_buf); -} - -static int __init alloc_workspace(void) -{ - lzo_mem = vmalloc(LZO1X_MEM_COMPRESS); - lzo_compress_buf = vmalloc(lzo1x_worst_compress(PAGE_SIZE)); - - if (!lzo_mem || !lzo_compress_buf) { - free_workspace(); - return -ENOMEM; - } - - return 0; -} - -static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out, - uint32_t *sourcelen, uint32_t *dstlen) -{ - size_t compress_size; - int ret; - - mutex_lock(&deflate_mutex); - ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem); - if (ret != LZO_E_OK) - goto fail; - - if (compress_size > *dstlen) - goto fail; - - memcpy(cpage_out, lzo_compress_buf, compress_size); - mutex_unlock(&deflate_mutex); - - *dstlen = compress_size; - return 0; - - fail: - mutex_unlock(&deflate_mutex); - return -1; -} - -static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out, - uint32_t srclen, uint32_t destlen) -{ - size_t dl = destlen; - int ret; - - ret = lzo1x_decompress_safe(data_in, srclen, cpage_out, &dl); - - if (ret != LZO_E_OK || dl != destlen) - return -1; - - return 0; -} - -static struct jffs2_compressor jffs2_lzo_comp = { - .priority = JFFS2_LZO_PRIORITY, - .name = "lzo", - .compr = JFFS2_COMPR_LZO, - .compress = &jffs2_lzo_compress, - .decompress = &jffs2_lzo_decompress, - .disabled = 0, -}; - -int __init jffs2_lzo_init(void) -{ - int ret; - - ret = alloc_workspace(); - if (ret < 0) - return ret; - - ret = jffs2_register_compressor(&jffs2_lzo_comp); - if (ret) - free_workspace(); - - return ret; -} - -void jffs2_lzo_exit(void) -{ - jffs2_unregister_compressor(&jffs2_lzo_comp); - free_workspace(); -} |