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
81 lines
1.4 KiB
C
81 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <zlib.h>
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#include "util/compress.h"
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#include "util/util.h"
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#include "util/debug.h"
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#define CHUNK_SIZE 16384
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int gzip_decompress_to_file(const char *input, int output_fd)
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{
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int ret = Z_STREAM_ERROR;
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int input_fd;
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void *ptr;
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int len;
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struct stat stbuf;
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unsigned char buf[CHUNK_SIZE];
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z_stream zs = {
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.zalloc = Z_NULL,
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.zfree = Z_NULL,
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.opaque = Z_NULL,
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.avail_in = 0,
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.next_in = Z_NULL,
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};
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input_fd = open(input, O_RDONLY);
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if (input_fd < 0)
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return -1;
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if (fstat(input_fd, &stbuf) < 0)
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goto out_close;
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ptr = mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, input_fd, 0);
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if (ptr == MAP_FAILED)
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goto out_close;
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if (inflateInit2(&zs, 16 + MAX_WBITS) != Z_OK)
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goto out_unmap;
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zs.next_in = ptr;
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zs.avail_in = stbuf.st_size;
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do {
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zs.next_out = buf;
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zs.avail_out = CHUNK_SIZE;
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ret = inflate(&zs, Z_NO_FLUSH);
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switch (ret) {
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case Z_NEED_DICT:
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ret = Z_DATA_ERROR;
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/* fall through */
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case Z_DATA_ERROR:
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case Z_MEM_ERROR:
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goto out;
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default:
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break;
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}
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len = CHUNK_SIZE - zs.avail_out;
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if (writen(output_fd, buf, len) != len) {
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ret = Z_DATA_ERROR;
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goto out;
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}
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} while (ret != Z_STREAM_END);
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out:
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inflateEnd(&zs);
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out_unmap:
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munmap(ptr, stbuf.st_size);
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out_close:
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close(input_fd);
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return ret == Z_STREAM_END ? 0 : -1;
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}
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