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
70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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/* From include/linux/stat.h */
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#ifndef S_IRWXUGO
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#define S_IRWXUGO (S_IRWXU|S_IRWXG|S_IRWXO)
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#endif
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#ifndef S_IALLUGO
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#define S_IALLUGO (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
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#endif
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#ifndef S_IRUGO
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#define S_IRUGO (S_IRUSR|S_IRGRP|S_IROTH)
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#endif
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#ifndef S_IWUGO
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#define S_IWUGO (S_IWUSR|S_IWGRP|S_IWOTH)
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#endif
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#ifndef S_IXUGO
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#define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
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#endif
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static size_t syscall_arg__scnprintf_mode_t(char *bf, size_t size, struct syscall_arg *arg)
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{
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int printed = 0, mode = arg->val;
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#define P_MODE(n) \
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if ((mode & S_##n) == S_##n) { \
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printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
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mode &= ~S_##n; \
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}
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P_MODE(IALLUGO);
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P_MODE(IRWXUGO);
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P_MODE(IRUGO);
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P_MODE(IWUGO);
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P_MODE(IXUGO);
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P_MODE(IFMT);
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P_MODE(IFSOCK);
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P_MODE(IFLNK);
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P_MODE(IFREG);
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P_MODE(IFBLK);
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P_MODE(IFDIR);
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P_MODE(IFCHR);
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P_MODE(IFIFO);
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P_MODE(ISUID);
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P_MODE(ISGID);
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P_MODE(ISVTX);
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P_MODE(IRWXU);
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P_MODE(IRUSR);
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P_MODE(IWUSR);
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P_MODE(IXUSR);
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P_MODE(IRWXG);
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P_MODE(IRGRP);
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P_MODE(IWGRP);
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P_MODE(IXGRP);
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P_MODE(IRWXO);
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P_MODE(IROTH);
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P_MODE(IWOTH);
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P_MODE(IXOTH);
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#undef P_MODE
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if (mode)
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printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", mode);
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return printed;
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}
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#define SCA_MODE_T syscall_arg__scnprintf_mode_t
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