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/*
* Extended attribute support for rsync.
*
* Copyright (C) 2004 Red Hat, Inc.
* Written by Jay Fenlason.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "rsync.h"
#include "sysxattrs.h"
#ifdef SUPPORT_XATTRS
#if defined HAVE_LINUX_XATTRS
ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
{
return lgetxattr(path, name, value, size);
}
ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
{
return fgetxattr(filedes, name, value, size);
}
int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
{
return lsetxattr(path, name, value, size, 0);
}
int sys_lremovexattr(const char *path, const char *name)
{
return lremovexattr(path, name);
}
ssize_t sys_llistxattr(const char *path, char *list, size_t size)
{
return llistxattr(path, list, size);
}
#elif HAVE_OSX_XATTRS
ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
{
return getxattr(path, name, value, size, 0, XATTR_NOFOLLOW);
}
ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
{
return fgetxattr(filedes, name, value, size, 0, 0);
}
int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
{
return setxattr(path, name, value, size, 0, XATTR_NOFOLLOW);
}
int sys_lremovexattr(const char *path, const char *name)
{
return removexattr(path, name, XATTR_NOFOLLOW);
}
ssize_t sys_llistxattr(const char *path, char *list, size_t size)
{
return listxattr(path, list, size, XATTR_NOFOLLOW);
}
#elif HAVE_FREEBSD_XATTRS
ssize_t sys_lgetxattr(const char *path, const char *name, void *value, size_t size)
{
return extattr_get_link(path, EXTATTR_NAMESPACE_USER, name, value, size);
}
ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
{
return extattr_get_fd(filedes, EXTATTR_NAMESPACE_USER, name, value, size);
}
int sys_lsetxattr(const char *path, const char *name, const void *value, size_t size)
{
return extattr_set_link(path, EXTATTR_NAMESPACE_USER, name, value, size);
}
int sys_lremovexattr(const char *path, const char *name)
{
return extattr_delete_link(path, EXTATTR_NAMESPACE_USER, name);
}
ssize_t sys_llistxattr(const char *path, char *list, size_t size)
{
unsigned char keylen;
ssize_t off, len = extattr_list_link(path, EXTATTR_NAMESPACE_USER, list, size);
if (len <= 0 || (size_t)len > size)
return len;
/* FreeBSD puts a single-byte length before each string, with no '\0'
* terminator. We need to change this into a series of null-terminted
* strings. Since the size is the same, we can simply transform the
* output in place. */
for (off = 0; off < len; off += keylen + 1) {
keylen = ((unsigned char*)list)[off];
if (off + keylen >= len) {
/* Should be impossible, but kernel bugs happen! */
errno = EINVAL;
return -1;
}
memmove(list+off, list+off+1, keylen);
list[off+keylen] = '\0';
}
return len;
}
#else
#error You need to create xattr compatibility functions.
#endif
#endif /* SUPPORT_XATTRS */
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