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Annotation of qemu/fsdev/file-op-9p.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Virtio 9p
                      3:  *
                      4:  * Copyright IBM, Corp. 2010
                      5:  *
                      6:  * Authors:
                      7:  *  Aneesh Kumar K.V <[email protected]>
                      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: #ifndef _FILEOP_H
                     14: #define _FILEOP_H
                     15: #include <sys/types.h>
                     16: #include <dirent.h>
                     17: #include <sys/time.h>
                     18: #include <utime.h>
                     19: #include <sys/stat.h>
                     20: #include <sys/uio.h>
                     21: #include <sys/vfs.h>
                     22: #define SM_LOCAL_MODE_BITS    0600
                     23: #define SM_LOCAL_DIR_MODE_BITS    0700
                     24: 
                     25: typedef enum
                     26: {
                     27:     /*
                     28:      * Server will try to set uid/gid.
                     29:      * On failure ignore the error.
                     30:      */
                     31:     SM_NONE = 0,
                     32:     /*
                     33:      * uid/gid set on fileserver files
                     34:      */
                     35:     SM_PASSTHROUGH = 1,
                     36:     /*
                     37:      * uid/gid part of xattr
                     38:      */
                     39:     SM_MAPPED,
                     40: } SecModel;
                     41: 
                     42: typedef struct FsCred
                     43: {
                     44:     uid_t   fc_uid;
                     45:     gid_t   fc_gid;
                     46:     mode_t  fc_mode;
                     47:     dev_t   fc_rdev;
                     48: } FsCred;
                     49: 
                     50: struct xattr_operations;
                     51: 
                     52: typedef struct FsContext
                     53: {
                     54:     char *fs_root;
                     55:     SecModel fs_sm;
                     56:     uid_t uid;
                     57:     struct xattr_operations **xops;
                     58: } FsContext;
                     59: 
                     60: void cred_init(FsCred *);
                     61: 
                     62: typedef struct FileOperations
                     63: {
                     64:     int (*lstat)(FsContext *, const char *, struct stat *);
                     65:     ssize_t (*readlink)(FsContext *, const char *, char *, size_t);
                     66:     int (*chmod)(FsContext *, const char *, FsCred *);
                     67:     int (*chown)(FsContext *, const char *, FsCred *);
                     68:     int (*mknod)(FsContext *, const char *, FsCred *);
                     69:     int (*utimensat)(FsContext *, const char *, const struct timespec *);
                     70:     int (*remove)(FsContext *, const char *);
                     71:     int (*symlink)(FsContext *, const char *, const char *, FsCred *);
                     72:     int (*link)(FsContext *, const char *, const char *);
                     73:     int (*setuid)(FsContext *, uid_t);
                     74:     int (*close)(FsContext *, int);
                     75:     int (*closedir)(FsContext *, DIR *);
                     76:     DIR *(*opendir)(FsContext *, const char *);
                     77:     int (*open)(FsContext *, const char *, int);
                     78:     int (*open2)(FsContext *, const char *, int, FsCred *);
                     79:     void (*rewinddir)(FsContext *, DIR *);
                     80:     off_t (*telldir)(FsContext *, DIR *);
                     81:     struct dirent *(*readdir)(FsContext *, DIR *);
                     82:     void (*seekdir)(FsContext *, DIR *, off_t);
                     83:     ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t);
                     84:     ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t);
                     85:     int (*mkdir)(FsContext *, const char *, FsCred *);
                     86:     int (*fstat)(FsContext *, int, struct stat *);
                     87:     int (*rename)(FsContext *, const char *, const char *);
                     88:     int (*truncate)(FsContext *, const char *, off_t);
                     89:     int (*fsync)(FsContext *, int, int);
                     90:     int (*statfs)(FsContext *s, const char *path, struct statfs *stbuf);
                     91:     ssize_t (*lgetxattr)(FsContext *, const char *,
                     92:                          const char *, void *, size_t);
                     93:     ssize_t (*llistxattr)(FsContext *, const char *, void *, size_t);
                     94:     int (*lsetxattr)(FsContext *, const char *,
                     95:                      const char *, void *, size_t, int);
                     96:     int (*lremovexattr)(FsContext *, const char *, const char *);
                     97:     void *opaque;
                     98: } FileOperations;
                     99: 
                    100: #endif

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