c418f935ac
Previous patch introduced a performance warning being logged on host side if client connected with an 'msize' <= 8192. Disable this performance warning for the synth driver to prevent that warning from being printed whenever the 9pfs (qtest) test cases are running. Introduce a new export flag V9FS_NO_PERF_WARN for that purpose, which might also be used to disable such warnings from the CLI in future. We could have also prevented the warning by simply raising P9_MAX_SIZE in virtio-9p-test.c to any value larger than 8192, however in the context of test cases it makes sense running for edge cases, which includes the lowest 'msize' value supported by the server which is 4096, hence we want to preserve an msize of 4096 for the test client. Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com> Reviewed-by: Greg Kurz <groug@kaod.org> Message-Id: <E1kEyDy-0006nN-5A@lizzy.crudebyte.com> Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
162 lines
5 KiB
C
162 lines
5 KiB
C
/*
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* 9p
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*
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* Copyright IBM, Corp. 2010
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*
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* Authors:
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* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef FILE_OP_9P_H
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#define FILE_OP_9P_H
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#include <dirent.h>
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#include <utime.h>
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#include <sys/vfs.h>
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#include "qemu-fsdev-throttle.h"
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#define SM_LOCAL_MODE_BITS 0600
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#define SM_LOCAL_DIR_MODE_BITS 0700
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typedef struct FsCred {
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uid_t fc_uid;
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gid_t fc_gid;
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mode_t fc_mode;
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dev_t fc_rdev;
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} FsCred;
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typedef struct FsContext FsContext;
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typedef struct V9fsPath V9fsPath;
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typedef struct ExtendedOps {
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int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *);
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} ExtendedOps;
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/* export flags */
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#define V9FS_IMMEDIATE_WRITEOUT 0x00000001
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#define V9FS_PATHNAME_FSCONTEXT 0x00000002
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/*
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* uid/gid set on fileserver files
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*/
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#define V9FS_SM_PASSTHROUGH 0x00000004
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/*
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* uid/gid part of xattr
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*/
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#define V9FS_SM_MAPPED 0x00000008
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/*
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* Server will try to set uid/gid.
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* On failure ignore the error.
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*/
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#define V9FS_SM_NONE 0x00000010
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/*
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* uid/gid part of .virtfs_meatadata namespace
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*/
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#define V9FS_SM_MAPPED_FILE 0x00000020
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#define V9FS_RDONLY 0x00000040
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#define V9FS_PROXY_SOCK_FD 0x00000080
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#define V9FS_PROXY_SOCK_NAME 0x00000100
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/*
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* multidevs option (either one of the two applies exclusively)
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*/
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#define V9FS_REMAP_INODES 0x00000200
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#define V9FS_FORBID_MULTIDEVS 0x00000400
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/*
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* Disables certain performance warnings from being logged on host side.
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*/
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#define V9FS_NO_PERF_WARN 0x00000800
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#define V9FS_SEC_MASK 0x0000003C
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typedef struct FileOperations FileOperations;
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typedef struct XattrOperations XattrOperations;
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/*
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* Structure to store the various fsdev's passed through command line.
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*/
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typedef struct FsDriverEntry {
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char *fsdev_id;
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char *path;
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int export_flags;
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FileOperations *ops;
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FsThrottle fst;
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mode_t fmode;
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mode_t dmode;
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} FsDriverEntry;
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struct FsContext {
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uid_t uid;
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char *fs_root;
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int export_flags;
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XattrOperations **xops;
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ExtendedOps exops;
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FsThrottle *fst;
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/* fs driver specific data */
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void *private;
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mode_t fmode;
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mode_t dmode;
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};
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struct V9fsPath {
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uint16_t size;
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char *data;
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};
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typedef union V9fsFidOpenState V9fsFidOpenState;
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void cred_init(FsCred *);
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struct FileOperations
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{
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int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp);
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int (*init)(FsContext *, Error **errp);
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void (*cleanup)(FsContext *);
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int (*lstat)(FsContext *, V9fsPath *, struct stat *);
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ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
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int (*chmod)(FsContext *, V9fsPath *, FsCred *);
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int (*chown)(FsContext *, V9fsPath *, FsCred *);
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int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *);
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int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *);
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int (*remove)(FsContext *, const char *);
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int (*symlink)(FsContext *, const char *, V9fsPath *,
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const char *, FsCred *);
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int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
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int (*setuid)(FsContext *, uid_t);
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int (*close)(FsContext *, V9fsFidOpenState *);
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int (*closedir)(FsContext *, V9fsFidOpenState *);
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int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
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int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
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int (*open2)(FsContext *, V9fsPath *, const char *,
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int, FsCred *, V9fsFidOpenState *);
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void (*rewinddir)(FsContext *, V9fsFidOpenState *);
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off_t (*telldir)(FsContext *, V9fsFidOpenState *);
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struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
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void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
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ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
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const struct iovec *, int, off_t);
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ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
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const struct iovec *, int, off_t);
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int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
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int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *);
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int (*rename)(FsContext *, const char *, const char *);
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int (*truncate)(FsContext *, V9fsPath *, off_t);
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int (*fsync)(FsContext *, int, V9fsFidOpenState *, int);
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int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
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ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
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const char *, void *, size_t);
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ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t);
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int (*lsetxattr)(FsContext *, V9fsPath *,
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const char *, void *, size_t, int);
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int (*lremovexattr)(FsContext *, V9fsPath *, const char *);
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int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *);
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int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
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V9fsPath *newdir, const char *new_name);
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int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);
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};
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#endif
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