Index: head/sys/sys/extattr.h =================================================================== --- head/sys/sys/extattr.h (revision 167056) +++ head/sys/sys/extattr.h (revision 167057) @@ -1,149 +1,149 @@ /*- * Copyright (c) 1999-2001 Robert N. M. Watson * All rights reserved. * * This software was developed by Robert Watson for the TrustedBSD Project. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Developed by the TrustedBSD Project. * Support for extended filesystem attributes. */ #ifndef _SYS_EXTATTR_H_ #define _SYS_EXTATTR_H_ /* * Defined name spaces for extended attributes. Numeric constants are passed * via system calls, but a user-friendly string is also defined. */ #define EXTATTR_NAMESPACE_EMPTY 0x00000000 #define EXTATTR_NAMESPACE_EMPTY_STRING "empty" #define EXTATTR_NAMESPACE_USER 0x00000001 #define EXTATTR_NAMESPACE_USER_STRING "user" #define EXTATTR_NAMESPACE_SYSTEM 0x00000002 #define EXTATTR_NAMESPACE_SYSTEM_STRING "system" /* * The following macro is designed to initialize an array that maps * extended-attribute namespace values to their names, e.g., * char *extattr_namespace_names[] = EXTATTR_NAMESPACE_NAMES; */ #define EXTATTR_NAMESPACE_NAMES { \ EXTATTR_NAMESPACE_EMPTY_STRING, \ EXTATTR_NAMESPACE_USER_STRING, \ EXTATTR_NAMESPACE_SYSTEM_STRING } /* * This structure defines the required fields of an extended-attribute header. */ struct extattr { int32_t ea_length; /* length of this attribute */ int8_t ea_namespace; /* name space of this attribute */ int8_t ea_contentpadlen; /* bytes of padding at end of attribute */ int8_t ea_namelength; /* length of attribute name */ char ea_name[1]; /* null-terminated attribute name */ /* extended attribute content follows */ }; /* * These macros are used to access and manipulate an extended attribute: * * EXTATTR_NEXT(eap) returns a pointer to the next extended attribute * following eap. * EXTATTR_CONTENT(eap) returns a pointer to the extended attribute * content referenced by eap. * EXTATTR_CONTENT_SIZE(eap) returns the size of the extended attribute * content referenced by eap. * EXTATTR_SET_LENGTHS(eap, contentsize) called after initializing the * attribute name to calculate and set the ea_length, ea_namelength, * and ea_contentpadlen fields of the extended attribute structure. */ #define EXTATTR_NEXT(eap) \ ((struct extattr *)(((void *)(eap)) + (eap)->ea_length)) #define EXTATTR_CONTENT(eap) (((void *)(eap)) + EXTATTR_BASE_LENGTH(eap)) #define EXTATTR_CONTENT_SIZE(eap) \ ((eap)->ea_length - EXTATTR_BASE_LENGTH(eap) - (eap)->ea_contentpadlen) #define EXTATTR_BASE_LENGTH(eap) \ ((sizeof(struct extattr) + (eap)->ea_namelength + 7) & ~7) #define EXTATTR_SET_LENGTHS(eap, contentsize) do { \ KASSERT(((eap)->ea_name[0] != 0), \ ("Must initialize name before setting lengths")); \ (eap)->ea_namelength = strlen((eap)->ea_name); \ (eap)->ea_contentpadlen = ((contentsize) % 8) ? \ 8 - ((contentsize) % 8) : 0; \ (eap)->ea_length = EXTATTR_BASE_LENGTH(eap) + \ (contentsize) + (eap)->ea_contentpadlen; \ } while (0) #ifdef _KERNEL #define EXTATTR_MAXNAMELEN NAME_MAX struct thread; struct ucred; struct vnode; int extattr_check_cred(struct vnode *vp, int attrnamespace, struct ucred *cred, struct thread *td, int access); #else #include /* User-level definition of KASSERT for macros above */ #define KASSERT(cond, str) do { \ - if (cond) { printf("panic: "); printf(str); printf("\n"); exit(1); } \ + if (!(cond)) { printf("panic: "); printf(str); printf("\n"); exit(1); }\ } while (0) struct iovec; __BEGIN_DECLS int extattrctl(const char *_path, int _cmd, const char *_filename, int _attrnamespace, const char *_attrname); int extattr_delete_fd(int _fd, int _attrnamespace, const char *_attrname); int extattr_delete_file(const char *_path, int _attrnamespace, const char *_attrname); int extattr_delete_link(const char *_path, int _attrnamespace, const char *_attrname); ssize_t extattr_get_fd(int _fd, int _attrnamespace, const char *_attrname, void *_data, size_t _nbytes); ssize_t extattr_get_file(const char *_path, int _attrnamespace, const char *_attrname, void *_data, size_t _nbytes); ssize_t extattr_get_link(const char *_path, int _attrnamespace, const char *_attrname, void *_data, size_t _nbytes); ssize_t extattr_list_fd(int _fd, int _attrnamespace, void *_data, size_t _nbytes); ssize_t extattr_list_file(const char *_path, int _attrnamespace, void *_data, size_t _nbytes); ssize_t extattr_list_link(const char *_path, int _attrnamespace, void *_data, size_t _nbytes); int extattr_set_fd(int _fd, int _attrnamespace, const char *_attrname, const void *_data, size_t _nbytes); int extattr_set_file(const char *_path, int _attrnamespace, const char *_attrname, const void *_data, size_t _nbytes); int extattr_set_link(const char *_path, int _attrnamespace, const char *_attrname, const void *_data, size_t _nbytes); __END_DECLS #endif /* !_KERNEL */ #endif /* !_SYS_EXTATTR_H_ */