2 Copyright (c) 2009 Frank Lahm <franklahm@gmail.com>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
22 #ifdef HAVE_SOLARIS_ACLS
26 #include <atalk/vfs.h>
29 * This seems to be the current limit fo HFS+, we arbitrarily force that
30 * which also safes us from buffer overflows
32 #define MAX_EA_SIZE 3802
35 * At time of writing the 10.5.6 client adds 8 bytes to the
36 * length of the EA that we send him
38 #define MAX_REPLY_EXTRA_BYTES 8
41 * Library user must provide a static buffer of size ATTRNAMEBUFSIZ.
42 * It's used when listing EAs as intermediate buffer. For afpd it's
43 * defined in extattrs.c.
45 #define ATTRNAMEBUFSIZ 4096
53 #if !defined(HAVE_SETXATTR)
54 #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
55 #define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
58 /* Names for our Extended Attributes adouble data */
59 #define AD_EA_META "org.netatalk.Metadata"
60 #define AD_EA_RESO "org.netatalk.ResourceFork"
62 /****************************************************************************************
63 * Wrappers for native EA functions taken from Samba
64 ****************************************************************************************/
65 ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size);
66 ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t size);
67 ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size);
68 ssize_t sys_listxattr (const char *path, char *list, size_t size);
69 ssize_t sys_llistxattr (const char *path, char *list, size_t size);
70 ssize_t sys_flistxattr (int filedes, char *list, size_t size);
71 int sys_removexattr (const char *path, const char *name);
72 int sys_lremovexattr (const char *path, const char *name);
73 int sys_fremovexattr (int filedes, const char *name);
74 int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags);
75 int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags);
76 int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags);
77 int sys_copyxattr (const char *src, const char *dst);
79 /****************************************************************************************
80 * Stuff for our implementation of storing EAs in files in .AppleDouble dirs
81 ****************************************************************************************/
83 #define EA_INITED 0xea494e54 /* ea"INT", for interfacing ea_open w. ea_close */
84 #define EA_MAGIC 0x61644541 /* "adEA" */
85 #define EA_VERSION1 0x01
86 #define EA_VERSION EA_VERSION1
90 EA_CREATE = (1<<1), /* create if not existing on ea_open */
91 EA_RDONLY = (1<<2), /* open read only */
92 EA_RDWR = (1<<3), /* open read/write */
93 /* ea_open internal flags */
94 EA_DIR = (1<<4) /* ea header file is for a dir, ea_open adds it as appropiate */
97 #define EA_MAGIC_OFF 0
98 #define EA_MAGIC_LEN 4
99 #define EA_VERSION_OFF (EA_MAGIC_OFF + EA_MAGIC_LEN)
100 #define EA_VERSION_LEN 2
101 #define EA_COUNT_OFF (EA_VERSION_OFF + EA_VERSION_LEN)
102 #define EA_COUNT_LEN 2
103 #define EA_HEADER_SIZE (EA_MAGIC_LEN + EA_VERSION_LEN + EA_COUNT_LEN)
106 * structs describing the layout of the Extended Attributes bookkeeping file.
107 * This isn't really an AppleDouble structure, it's just a binary blob that
108 * lives in our .AppleDouble directory too.
112 size_t ea_namelen; /* len of ea_name without terminating 0 ie. strlen(ea_name)*/
113 size_t ea_size; /* size of EA*/
114 char *ea_name; /* name of the EA */
117 /* We read the on-disk data into *ea_data and parse it into this*/
119 uint32_t ea_inited; /* needed for interfacing ea_open w. ea_close */
120 const struct vol *vol; /* vol handle, ea_close needs it */
121 int dirfd; /* for *at (cf openat) semantics, -1 means ignore */
122 char *filename; /* name of file, needed by ea_close too */
123 unsigned int ea_count; /* number of EAs in ea_entries array */
124 struct ea_entry (*ea_entries)[]; /* malloced and realloced as needed by ea_count*/
125 int ea_fd; /* open fd for ea_data */
126 eaflags_t ea_flags; /* flags */
127 size_t ea_size; /* size of header file = size of ea_data buffer */
128 char *ea_data; /* pointer to buffer into that we actually *
129 * read the disc file into */
132 /* On-disk format, just for reference ! */
134 struct ea_entry_ondisk {
136 char ea_name[]; /* zero terminated string */
141 u_int16_t ea_version;
143 struct ea_entry_ondisk ea_entries[ea_count];
147 /* VFS inderected funcs ... : */
149 /* Default adouble EAs */
150 extern int get_easize(VFS_FUNC_ARGS_EA_GETSIZE);
151 extern int get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT);
152 extern int list_eas(VFS_FUNC_ARGS_EA_LIST);
153 extern int set_ea(VFS_FUNC_ARGS_EA_SET);
154 extern int remove_ea(VFS_FUNC_ARGS_EA_REMOVE);
155 /* ... EA VFS funcs that deal with file/dir cp/mv/rm */
156 extern int ea_deletefile(VFS_FUNC_ARGS_DELETEFILE);
157 extern int ea_renamefile(VFS_FUNC_ARGS_RENAMEFILE);
158 extern int ea_copyfile(VFS_FUNC_ARGS_COPYFILE);
159 extern int ea_chown(VFS_FUNC_ARGS_CHOWN);
160 extern int ea_chmod_file(VFS_FUNC_ARGS_SETFILEMODE);
161 extern int ea_chmod_dir(VFS_FUNC_ARGS_SETDIRUNIXMODE);
164 extern int sys_get_easize(VFS_FUNC_ARGS_EA_GETSIZE);
165 extern int sys_get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT);
166 extern int sys_list_eas(VFS_FUNC_ARGS_EA_LIST);
167 extern int sys_set_ea(VFS_FUNC_ARGS_EA_SET);
168 extern int sys_remove_ea(VFS_FUNC_ARGS_EA_REMOVE);
169 /* native EA VFSfile/dir cp/mv/rm */
170 extern int sys_ea_copyfile(VFS_FUNC_ARGS_COPYFILE);
172 /* dbd needs access to these */
173 extern int ea_open(const struct vol * restrict vol,
174 const char * restrict uname,
176 struct ea * restrict ea);
177 extern int ea_openat(const struct vol * restrict vol,
179 const char * restrict uname,
181 struct ea * restrict ea);
182 extern int ea_close(struct ea * restrict ea);
183 extern char *ea_path(const struct ea * restrict ea, const char * restrict eaname, int macname);
185 #endif /* ATALK_EA_H */