cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

file-op-9p.h (5107B)

      1/*
      2 * 9p
      3 *
      4 * Copyright IBM, Corp. 2010
      5 *
      6 * Authors:
      7 *  Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      8 *
      9 * This work is licensed under the terms of the GNU GPL, version 2.  See
     10 * the COPYING file in the top-level directory.
     11 *
     12 */
     13
     14#ifndef FILE_OP_9P_H
     15#define FILE_OP_9P_H
     16
     17#include <dirent.h>
     18#include <utime.h>
     19#include <sys/vfs.h>
     20#include "qemu-fsdev-throttle.h"
     21
     22#define SM_LOCAL_MODE_BITS    0600
     23#define SM_LOCAL_DIR_MODE_BITS    0700
     24
     25typedef struct FsCred {
     26    uid_t   fc_uid;
     27    gid_t   fc_gid;
     28    mode_t  fc_mode;
     29    dev_t   fc_rdev;
     30} FsCred;
     31
     32typedef struct FsContext FsContext;
     33typedef struct V9fsPath V9fsPath;
     34
     35typedef struct ExtendedOps {
     36    int (*get_st_gen)(FsContext *, V9fsPath *, mode_t, uint64_t *);
     37} ExtendedOps;
     38
     39/* export flags */
     40#define V9FS_IMMEDIATE_WRITEOUT     0x00000001
     41#define V9FS_PATHNAME_FSCONTEXT     0x00000002
     42/*
     43 * uid/gid set on fileserver files
     44 */
     45#define V9FS_SM_PASSTHROUGH         0x00000004
     46/*
     47 * uid/gid part of xattr
     48 */
     49#define V9FS_SM_MAPPED              0x00000008
     50/*
     51 * Server will try to set uid/gid.
     52 * On failure ignore the error.
     53 */
     54#define V9FS_SM_NONE                0x00000010
     55/*
     56 * uid/gid part of .virtfs_meatadata namespace
     57 */
     58#define V9FS_SM_MAPPED_FILE         0x00000020
     59#define V9FS_RDONLY                 0x00000040
     60#define V9FS_PROXY_SOCK_FD          0x00000080
     61#define V9FS_PROXY_SOCK_NAME        0x00000100
     62/*
     63 * multidevs option (either one of the two applies exclusively)
     64 */
     65#define V9FS_REMAP_INODES           0x00000200
     66#define V9FS_FORBID_MULTIDEVS       0x00000400
     67/*
     68 * Disables certain performance warnings from being logged on host side.
     69 */
     70#define V9FS_NO_PERF_WARN           0x00000800
     71
     72#define V9FS_SEC_MASK               0x0000003C
     73
     74
     75typedef struct FileOperations FileOperations;
     76typedef struct XattrOperations XattrOperations;
     77
     78/*
     79 * Structure to store the various fsdev's passed through command line.
     80 */
     81typedef struct FsDriverEntry {
     82    char *fsdev_id;
     83    char *path;
     84    int export_flags;
     85    FileOperations *ops;
     86    FsThrottle fst;
     87    mode_t fmode;
     88    mode_t dmode;
     89} FsDriverEntry;
     90
     91struct FsContext {
     92    uid_t uid;
     93    char *fs_root;
     94    int export_flags;
     95    XattrOperations **xops;
     96    ExtendedOps exops;
     97    FsThrottle *fst;
     98    /* fs driver specific data */
     99    void *private;
    100    mode_t fmode;
    101    mode_t dmode;
    102};
    103
    104struct V9fsPath {
    105    uint16_t size;
    106    char *data;
    107};
    108
    109typedef union V9fsFidOpenState V9fsFidOpenState;
    110
    111void cred_init(FsCred *);
    112
    113struct FileOperations {
    114    int (*parse_opts)(QemuOpts *, FsDriverEntry *, Error **errp);
    115    int (*init)(FsContext *, Error **errp);
    116    void (*cleanup)(FsContext *);
    117    int (*lstat)(FsContext *, V9fsPath *, struct stat *);
    118    ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
    119    int (*chmod)(FsContext *, V9fsPath *, FsCred *);
    120    int (*chown)(FsContext *, V9fsPath *, FsCred *);
    121    int (*mknod)(FsContext *, V9fsPath *, const char *, FsCred *);
    122    int (*utimensat)(FsContext *, V9fsPath *, const struct timespec *);
    123    int (*remove)(FsContext *, const char *);
    124    int (*symlink)(FsContext *, const char *, V9fsPath *,
    125                   const char *, FsCred *);
    126    int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
    127    int (*setuid)(FsContext *, uid_t);
    128    int (*close)(FsContext *, V9fsFidOpenState *);
    129    int (*closedir)(FsContext *, V9fsFidOpenState *);
    130    int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
    131    int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
    132    int (*open2)(FsContext *, V9fsPath *, const char *,
    133                 int, FsCred *, V9fsFidOpenState *);
    134    void (*rewinddir)(FsContext *, V9fsFidOpenState *);
    135    off_t (*telldir)(FsContext *, V9fsFidOpenState *);
    136    struct dirent * (*readdir)(FsContext *, V9fsFidOpenState *);
    137    void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
    138    ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
    139                      const struct iovec *, int, off_t);
    140    ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
    141                       const struct iovec *, int, off_t);
    142    int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
    143    int (*fstat)(FsContext *, int, V9fsFidOpenState *, struct stat *);
    144    int (*rename)(FsContext *, const char *, const char *);
    145    int (*truncate)(FsContext *, V9fsPath *, off_t);
    146    int (*fsync)(FsContext *, int, V9fsFidOpenState *, int);
    147    int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
    148    ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
    149                         const char *, void *, size_t);
    150    ssize_t (*llistxattr)(FsContext *, V9fsPath *, void *, size_t);
    151    int (*lsetxattr)(FsContext *, V9fsPath *,
    152                     const char *, void *, size_t, int);
    153    int (*lremovexattr)(FsContext *, V9fsPath *, const char *);
    154    int (*name_to_path)(FsContext *, V9fsPath *, const char *, V9fsPath *);
    155    int (*renameat)(FsContext *ctx, V9fsPath *olddir, const char *old_name,
    156                    V9fsPath *newdir, const char *new_name);
    157    int (*unlinkat)(FsContext *ctx, V9fsPath *dir, const char *name, int flags);
    158};
    159
    160#endif