/* * Copyright (c) 2013 * Phillip Lougher <phillip@squashfs.org.uk> * * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. */ #include <linux/types.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/buffer_head.h> #include "squashfs_fs.h" #include "squashfs_fs_sb.h" #include "decompressor.h" #include "squashfs.h" /* * This file implements single-threaded decompression in the * decompressor framework */ struct squashfs_stream { void *stream; struct mutex mutex; }; void *squashfs_decompressor_create(struct squashfs_sb_info *msblk, void *comp_opts) { struct squashfs_stream *stream; int err = -ENOMEM; stream = kmalloc(sizeof(*stream), GFP_KERNEL); if (stream == NULL) goto out; stream->stream = msblk->decompressor->init(msblk, comp_opts); if (IS_ERR(stream->stream)) { err = PTR_ERR(stream->stream); goto out; } kfree(comp_opts); mutex_init(&stream->mutex); return stream; out: kfree(stream); return ERR_PTR(err); } void squashfs_decompressor_destroy(struct squashfs_sb_info *msblk) { struct squashfs_stream *stream = msblk->stream; if (stream) { msblk->decompressor->free(stream->stream); kfree(stream); } } int squashfs_decompress(struct squashfs_sb_info *msblk, struct buffer_head **bh, int b, int offset, int length, struct squashfs_page_actor *output) { int res; struct squashfs_stream *stream = msblk->stream; mutex_lock(&stream->mutex); res = msblk->decompressor->decompress(msblk, stream->stream, bh, b, offset, length, output); mutex_unlock(&stream->mutex); if (res < 0) ERROR("%s decompression failed, data probably corrupt\n", msblk->decompressor->name); return res; } int squashfs_max_decompressors(void) { return 1; } et-next.git/tree/net/phonet?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/phonet?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/phonet?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/phonet'> <input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='9ba221b372c177b6908ff8c39b7b056538622ae1'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/phonet?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1'>phonet</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/phonet?h=nds-private-remove&id=9ba221b372c177b6908ff8c39b7b056538622ae1&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>