Merge remote-tracking branch 'jvrao/for-anthony' into staging

1 files changed, 107 insertions, 0 deletions

diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h
new file mode 100644
index 0000000..126e60e
--- /dev/null
+++ b/fsdev/file-op-9p.h
@@ -0,0 +1,107 @@
+/*
+ * Virtio 9p
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ *  Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+#ifndef _FILEOP_H
+#define _FILEOP_H
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/time.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <sys/vfs.h>
+#define SM_LOCAL_MODE_BITS    0600
+#define SM_LOCAL_DIR_MODE_BITS    0700
+
+typedef enum
+{
+    /*
+     * Server will try to set uid/gid.
+     * On failure ignore the error.
+     */
+    SM_NONE = 0,
+    /*
+     * uid/gid set on fileserver files
+     */
+    SM_PASSTHROUGH = 1,
+    /*
+     * uid/gid part of xattr
+     */
+    SM_MAPPED,
+} SecModel;
+
+typedef struct FsCred
+{
+    uid_t   fc_uid;
+    gid_t   fc_gid;
+    mode_t  fc_mode;
+    dev_t   fc_rdev;
+} FsCred;
+
+struct xattr_operations;
+
+typedef struct FsContext
+{
+    char *fs_root;
+    SecModel fs_sm;
+    uid_t uid;
+    struct xattr_operations **xops;
+} FsContext;
+
+void cred_init(FsCred *);
+
+typedef struct FileOperations
+{
+    int (*lstat)(FsContext *, const char *, struct stat *);
+    ssize_t (*readlink)(FsContext *, const char *, char *, size_t);
+    int (*chmod)(FsContext *, const char *, FsCred *);
+    int (*chown)(FsContext *, const char *, FsCred *);
+    int (*mknod)(FsContext *, const char *, FsCred *);
+    int (*utimensat)(FsContext *, const char *, const struct timespec *);
+    int (*remove)(FsContext *, const char *);
+    int (*symlink)(FsContext *, const char *, const char *, FsCred *);
+    int (*link)(FsContext *, const char *, const char *);
+    int (*setuid)(FsContext *, uid_t);
+    int (*close)(FsContext *, int);
+    int (*closedir)(FsContext *, DIR *);
+    DIR *(*opendir)(FsContext *, const char *);
+    int (*open)(FsContext *, const char *, int);
+    int (*open2)(FsContext *, const char *, int, FsCred *);
+    void (*rewinddir)(FsContext *, DIR *);
+    off_t (*telldir)(FsContext *, DIR *);
+    struct dirent *(*readdir)(FsContext *, DIR *);
+    void (*seekdir)(FsContext *, DIR *, off_t);
+    ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t);
+    ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t);
+    int (*mkdir)(FsContext *, const char *, FsCred *);
+    int (*fstat)(FsContext *, int, struct stat *);
+    int (*rename)(FsContext *, const char *, const char *);
+    int (*truncate)(FsContext *, const char *, off_t);
+    int (*fsync)(FsContext *, int, int);
+    int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf);
+    ssize_t (*lgetxattr)(FsContext *, const char *,
+                         const char *, void *, size_t);
+    ssize_t (*llistxattr)(FsContext *, const char *, void *, size_t);
+    int (*lsetxattr)(FsContext *, const char *,
+                     const char *, void *, size_t, int);
+    int (*lremovexattr)(FsContext *, const char *, const char *);
+    void *opaque;
+} FileOperations;
+
+static inline const char *rpath(FsContext *ctx, const char *path)
+{
+    /* FIXME: so wrong... */
+    static char buffer[4096];
+    snprintf(buffer, sizeof(buffer), "%s/%s", ctx->fs_root, path);
+    return buffer;
+}
+#endif