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 QEMU_9P_XATTR_H 15 #define QEMU_9P_XATTR_H 16 17 #include "qemu/xattr.h" 18 19 typedef struct xattr_operations 20 { 21 const char *name; 22 ssize_t (*getxattr)(FsContext *ctx, const char *path, 23 const char *name, void *value, size_t size); 24 ssize_t (*listxattr)(FsContext *ctx, const char *path, 25 char *name, void *value, size_t size); 26 int (*setxattr)(FsContext *ctx, const char *path, const char *name, 27 void *value, size_t size, int flags); 28 int (*removexattr)(FsContext *ctx, 29 const char *path, const char *name); 30 } XattrOperations; 31 32 33 extern XattrOperations mapped_user_xattr; 34 extern XattrOperations passthrough_user_xattr; 35 36 extern XattrOperations mapped_pacl_xattr; 37 extern XattrOperations mapped_dacl_xattr; 38 extern XattrOperations passthrough_acl_xattr; 39 extern XattrOperations none_acl_xattr; 40 41 extern XattrOperations *mapped_xattr_ops[]; 42 extern XattrOperations *passthrough_xattr_ops[]; 43 extern XattrOperations *none_xattr_ops[]; 44 45 ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, const char *name, 46 void *value, size_t size); 47 ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, void *value, 48 size_t vsize); 49 int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name, 50 void *value, size_t size, int flags); 51 int v9fs_remove_xattr(FsContext *ctx, const char *path, const char *name); 52 ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value, 53 size_t size); 54 55 static inline ssize_t pt_getxattr(FsContext *ctx, const char *path, 56 const char *name, void *value, size_t size) 57 { 58 char *buffer; 59 ssize_t ret; 60 61 buffer = rpath(ctx, path); 62 ret = lgetxattr(buffer, name, value, size); 63 g_free(buffer); 64 return ret; 65 } 66 67 static inline int pt_setxattr(FsContext *ctx, const char *path, 68 const char *name, void *value, 69 size_t size, int flags) 70 { 71 char *buffer; 72 int ret; 73 74 buffer = rpath(ctx, path); 75 ret = lsetxattr(buffer, name, value, size, flags); 76 g_free(buffer); 77 return ret; 78 } 79 80 static inline int pt_removexattr(FsContext *ctx, 81 const char *path, const char *name) 82 { 83 char *buffer; 84 int ret; 85 86 buffer = rpath(ctx, path); 87 ret = lremovexattr(path, name); 88 g_free(buffer); 89 return ret; 90 } 91 92 static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path, 93 const char *name, void *value, 94 size_t size) 95 { 96 errno = ENOTSUP; 97 return -1; 98 } 99 100 static inline int notsup_setxattr(FsContext *ctx, const char *path, 101 const char *name, void *value, 102 size_t size, int flags) 103 { 104 errno = ENOTSUP; 105 return -1; 106 } 107 108 static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path, 109 char *name, void *value, size_t size) 110 { 111 return 0; 112 } 113 114 static inline int notsup_removexattr(FsContext *ctx, 115 const char *path, const char *name) 116 { 117 errno = ENOTSUP; 118 return -1; 119 } 120 121 #endif 122