litmus-rt.git - The LITMUS^RT kernel.

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The LITMUS^RT kernel.

Bjoern Brandenburg

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path: root/net/tipc/socket.c

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c">#include <linux/cramfs_fs.h> static z_stream stream; static int initialized; /* Returns length of decompressed data. */ int cramfs_uncompress_block(void *dst, int dstlen, void *src, int srclen) { int err; stream.next_in = src; stream.avail_in = srclen; stream.next_out = dst; stream.avail_out = dstlen; err = zlib_inflateReset(&stream); if (err != Z_OK) { printk("zlib_inflateReset error %d\n", err); zlib_inflateEnd(&stream); zlib_inflateInit(&stream); } err = zlib_inflate(&stream, Z_FINISH); if (err != Z_STREAM_END) goto err; return stream.total_out; err: printk("Error %d while decompressing!\n", err); printk("%p(%d)->%p(%d)\n", src, srclen, dst, dstlen); return -EIO; } int cramfs_uncompress_init(void) { if (!initialized++) { stream.workspace = vmalloc(zlib_inflate_workspacesize()); if ( !stream.workspace ) { initialized = 0; return -ENOMEM; } stream.next_in = NULL; stream.avail_in = 0; zlib_inflateInit(&stream); } return 0; } void cramfs_uncompress_exit(void) { if (!--initialized) { zlib_inflateEnd(&stream); vfree(stream.workspace); } }


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