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 /****************************************************************************************
59 * Wrappers for native EA functions taken from Samba
60 ****************************************************************************************/
61 ssize_t sys_getxattr (const char *path, const char *name, void *value, size_t size);
62 ssize_t sys_lgetxattr (const char *path, const char *name, void *value, size_t size);
63 ssize_t sys_fgetxattr (int filedes, const char *name, void *value, size_t size);
64 ssize_t sys_listxattr (const char *path, char *list, size_t size);
65 ssize_t sys_llistxattr (const char *path, char *list, size_t size);
66 ssize_t sys_flistxattr (int filedes, char *list, size_t size);
67 int sys_removexattr (const char *path, const char *name);
68 int sys_lremovexattr (const char *path, const char *name);
69 int sys_fremovexattr (int filedes, const char *name);
70 int sys_setxattr (const char *path, const char *name, const void *value, size_t size, int flags);
71 int sys_lsetxattr (const char *path, const char *name, const void *value, size_t size, int flags);
72 int sys_fsetxattr (int filedes, const char *name, const void *value, size_t size, int flags);
73 int sys_copyxattr (const char *src, const char *dst);
75 /****************************************************************************************
76 * Stuff for our implementation of storing EAs in files in .AppleDouble dirs
77 ****************************************************************************************/
79 #define EA_INITED 0xea494e54 /* ea"INT", for interfacing ea_open w. ea_close */
80 #define EA_MAGIC 0x61644541 /* "adEA" */
81 #define EA_VERSION1 0x01
82 #define EA_VERSION EA_VERSION1
86 EA_CREATE = (1<<1), /* create if not existing on ea_open */
87 EA_RDONLY = (1<<2), /* open read only */
88 EA_RDWR = (1<<3), /* open read/write */
89 /* ea_open internal flags */
90 EA_DIR = (1<<4) /* ea header file is for a dir, ea_open adds it as appropiate */
93 #define EA_MAGIC_OFF 0
94 #define EA_MAGIC_LEN 4
95 #define EA_VERSION_OFF (EA_MAGIC_OFF + EA_MAGIC_LEN)
96 #define EA_VERSION_LEN 2
97 #define EA_COUNT_OFF (EA_VERSION_OFF + EA_VERSION_LEN)
98 #define EA_COUNT_LEN 2
99 #define EA_HEADER_SIZE (EA_MAGIC_LEN + EA_VERSION_LEN + EA_COUNT_LEN)
102 * structs describing the layout of the Extended Attributes bookkeeping file.
103 * This isn't really an AppleDouble structure, it's just a binary blob that
104 * lives in our .AppleDouble directory too.
108 size_t ea_namelen; /* len of ea_name without terminating 0 ie. strlen(ea_name)*/
109 size_t ea_size; /* size of EA*/
110 char *ea_name; /* name of the EA */
113 /* We read the on-disk data into *ea_data and parse it into this*/
115 uint32_t ea_inited; /* needed for interfacing ea_open w. ea_close */
116 const struct vol *vol; /* vol handle, ea_close needs it */
117 int dirfd; /* for *at (cf openat) semantics, -1 means ignore */
118 char *filename; /* name of file, needed by ea_close too */
119 unsigned int ea_count; /* number of EAs in ea_entries array */
120 struct ea_entry (*ea_entries)[]; /* malloced and realloced as needed by ea_count*/
121 int ea_fd; /* open fd for ea_data */
122 eaflags_t ea_flags; /* flags */
123 size_t ea_size; /* size of header file = size of ea_data buffer */
124 char *ea_data; /* pointer to buffer into that we actually *
125 * read the disc file into */
128 /* On-disk format, just for reference ! */
130 struct ea_entry_ondisk {
132 char ea_name[]; /* zero terminated string */
137 u_int16_t ea_version;
139 struct ea_entry_ondisk ea_entries[ea_count];
143 /* VFS inderected funcs ... : */
145 /* Default adouble EAs */
146 extern int get_easize(VFS_FUNC_ARGS_EA_GETSIZE);
147 extern int get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT);
148 extern int list_eas(VFS_FUNC_ARGS_EA_LIST);
149 extern int set_ea(VFS_FUNC_ARGS_EA_SET);
150 extern int remove_ea(VFS_FUNC_ARGS_EA_REMOVE);
151 /* ... EA VFS funcs that deal with file/dir cp/mv/rm */
152 extern int ea_deletefile(VFS_FUNC_ARGS_DELETEFILE);
153 extern int ea_renamefile(VFS_FUNC_ARGS_RENAMEFILE);
154 extern int ea_copyfile(VFS_FUNC_ARGS_COPYFILE);
155 extern int ea_chown(VFS_FUNC_ARGS_CHOWN);
156 extern int ea_chmod_file(VFS_FUNC_ARGS_SETFILEMODE);
157 extern int ea_chmod_dir(VFS_FUNC_ARGS_SETDIRUNIXMODE);
160 extern int sys_get_easize(VFS_FUNC_ARGS_EA_GETSIZE);
161 extern int sys_get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT);
162 extern int sys_list_eas(VFS_FUNC_ARGS_EA_LIST);
163 extern int sys_set_ea(VFS_FUNC_ARGS_EA_SET);
164 extern int sys_remove_ea(VFS_FUNC_ARGS_EA_REMOVE);
165 /* native EA VFSfile/dir cp/mv/rm */
166 extern int sys_ea_copyfile(VFS_FUNC_ARGS_COPYFILE);
168 /* dbd needs access to these */
169 extern int ea_open(const struct vol * restrict vol,
170 const char * restrict uname,
172 struct ea * restrict ea);
173 extern int ea_openat(const struct vol * restrict vol,
175 const char * restrict uname,
177 struct ea * restrict ea);
178 extern int ea_close(struct ea * restrict ea);
179 extern char *ea_path(const struct ea * restrict ea, const char * restrict eaname, int macname);
181 #endif /* ATALK_EA_H */