16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <errno.h>
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#include <lzma.h>
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#include <stdio.h>
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#include <linux/compiler.h>
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#include "compress.h"
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#include "util.h"
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#include "debug.h"
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#define BUFSIZE 8192
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static const char *lzma_strerror(lzma_ret ret)
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{
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switch ((int) ret) {
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case LZMA_MEM_ERROR:
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return "Memory allocation failed";
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case LZMA_OPTIONS_ERROR:
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return "Unsupported decompressor flags";
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case LZMA_FORMAT_ERROR:
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return "The input is not in the .xz format";
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case LZMA_DATA_ERROR:
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return "Compressed file is corrupt";
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case LZMA_BUF_ERROR:
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return "Compressed file is truncated or otherwise corrupt";
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default:
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return "Unknown error, possibly a bug";
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}
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}
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int lzma_decompress_to_file(const char *input, int output_fd)
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{
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lzma_action action = LZMA_RUN;
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lzma_stream strm = LZMA_STREAM_INIT;
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lzma_ret ret;
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int err = -1;
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u8 buf_in[BUFSIZE];
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u8 buf_out[BUFSIZE];
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FILE *infile;
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infile = fopen(input, "rb");
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if (!infile) {
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pr_err("lzma: fopen failed on %s: '%s'\n",
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input, strerror(errno));
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return -1;
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}
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ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
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if (ret != LZMA_OK) {
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pr_err("lzma: lzma_stream_decoder failed %s (%d)\n",
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lzma_strerror(ret), ret);
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goto err_fclose;
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}
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strm.next_in = NULL;
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strm.avail_in = 0;
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strm.next_out = buf_out;
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strm.avail_out = sizeof(buf_out);
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while (1) {
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if (strm.avail_in == 0 && !feof(infile)) {
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strm.next_in = buf_in;
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strm.avail_in = fread(buf_in, 1, sizeof(buf_in), infile);
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if (ferror(infile)) {
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pr_err("lzma: read error: %s\n", strerror(errno));
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goto err_fclose;
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}
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if (feof(infile))
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action = LZMA_FINISH;
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}
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ret = lzma_code(&strm, action);
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if (strm.avail_out == 0 || ret == LZMA_STREAM_END) {
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ssize_t write_size = sizeof(buf_out) - strm.avail_out;
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if (writen(output_fd, buf_out, write_size) != write_size) {
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pr_err("lzma: write error: %s\n", strerror(errno));
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goto err_fclose;
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}
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strm.next_out = buf_out;
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strm.avail_out = sizeof(buf_out);
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}
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if (ret != LZMA_OK) {
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if (ret == LZMA_STREAM_END)
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break;
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pr_err("lzma: failed %s\n", lzma_strerror(ret));
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goto err_fclose;
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}
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}
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err = 0;
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err_fclose:
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fclose(infile);
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return err;
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}
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