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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 Stanislav Sedov <stas@FreeBSD.org>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*/
#if defined(__FreeBSD__)
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/extattr.h>
#elif defined(__linux__)
#include <sys/types.h>
#include <sys/xattr.h>
#elif defined(DARWIN)
#include <sys/xattr.h>
#else
#error "Your system is not supported!"
#endif
#include "common/xattr.h"
/*
* Sets extended attribute on a file.
* Returns 0 on success, -1 on failure.
*/
int
ceph_os_setxattr(const char *path, const char *name,
const void *value, size_t size)
{
int error = -1;
#if defined(__FreeBSD__)
error = extattr_set_file(path, EXTATTR_NAMESPACE_USER, name, value,
size);
if (error > 0)
error = 0;
#elif defined(__linux__) || defined(DARWIN)
error = setxattr(path, name, value, size, 0);
#endif
return (error);
}
int
ceph_os_fsetxattr(int fd, const char *name, const void *value,
size_t size)
{
int error = -1;
#if defined(__FreeBSD__)
error = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER, name, value,
size);
if (error > 0)
error = 0;
#elif defined(__linux__) || defined(DARWIN)
error = fsetxattr(fd, name, value, size, 0);
#endif
return (error);
}
ssize_t
ceph_os_getxattr(const char *path, const char *name,
void *value, size_t size)
{
ssize_t error = -1;
#if defined(__FreeBSD__)
if (value == NULL || size == 0) {
error = extattr_get_file(path, EXTATTR_NAMESPACE_USER, name, value,
size);
} else {
error = extattr_get_file(path, EXTATTR_NAMESPACE_USER, name, NULL,
0);
if (error > 0) {
if (error > size) {
errno = ERANGE;
error = -1;
} else {
error = extattr_get_file(path, EXTATTR_NAMESPACE_USER,
name, value, size);
}
}
}
#elif defined(__linux__)
error = getxattr(path, name, value, size);
#elif defined(DARWIN)
error = getxattr(path, name, value, size, 0);
#endif
return (error);
}
ssize_t
ceph_os_fgetxattr(int fd, const char *name, void *value,
size_t size)
{
ssize_t error = -1;
#if defined(__FreeBSD__)
if (value == NULL || size == 0) {
error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, value,
size);
} else {
error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, NULL,
0);
if (error > 0) {
if (error > size) {
errno = ERANGE;
error = -1;
} else {
error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER,
name, value, size);
}
}
}
#elif defined(__linux__)
error = fgetxattr(fd, name, value, size);
#elif defined(DARWIN)
error = fgetxattr(fd, name, value, size, 0);
#endif
return (error);
}
ssize_t
ceph_os_listxattr(const char *path, char *list, size_t size)
{
ssize_t error = -1;
#if defined(__FreeBSD__)
/*
* XXX. The format of the list FreeBSD returns differs
* from the Linux ones. We have to perform the conversion. :-(
*/
char *newlist, *p, *p1;
if (size != 0) {
newlist = malloc(size);
if (newlist != NULL) {
error = extattr_list_file(path, EXTATTR_NAMESPACE_USER,
newlist, size);
if (error > 0) {
p = newlist;
p1 = list;
while ((p - newlist) < error) {
uint8_t len = *(uint8_t *)p;
p++;
if ((p + len - newlist) > error)
break;
if (len > 0) {
bcopy(p, p1, len);
p += len;
p1 += len;
*p1++ = '\0';
}
}
error = p1 - list;
}
free(newlist);
}
} else {
error = extattr_list_file(path, EXTATTR_NAMESPACE_USER,
list, size);
}
#elif defined(__linux__)
error = listxattr(path, list, size);
#elif defined(DARWIN)
error = listxattr(path, list, size, 0);
#endif
return (error);
}
ssize_t
ceph_os_flistxattr(int fd, char *list, size_t size)
{
ssize_t error = -1;
#if defined(__FreeBSD__)
/*
* XXX. The format of the list FreeBSD returns differs
* from the Linux ones. We have to perform the conversion. :-(
*/
char *newlist, *p, *p1;
if (size != 0) {
newlist = malloc(size);
if (newlist != NULL) {
error = extattr_list_fd(fd, EXTATTR_NAMESPACE_USER,
newlist, size);
if (error > 0) {
p = newlist;
p1 = list;
while ((p - newlist) < error) {
uint8_t len = *(uint8_t *)p;
p++;
if ((p + len - newlist) > error)
break;
if (len > 0) {
bcopy(p, p1, len);
p += len;
p1 += len;
*p1++ = '\0';
}
}
error = p1 - list;
}
free(newlist);
}
} else {
error = extattr_list_fd(fd, EXTATTR_NAMESPACE_USER,
list, size);
}
#elif defined(__linux__)
error = flistxattr(fd, list, size);
#elif defined(DARWIN)
error = flistxattr(fd, list, size, 0);
#endif
return (error);
}
int
ceph_os_removexattr(const char *path, const char *name)
{
int error = -1;
#if defined(__FreeBSD__)
error = extattr_delete_file(path, EXTATTR_NAMESPACE_USER, name);
#elif defined(__linux__)
error = removexattr(path, name);
#elif defined(DARWIN)
error = removexattr(path, name, 0);
#endif
return (error);
}
int
ceph_os_fremovexattr(int fd, const char *name)
{
int error = -1;
#if defined(__FreeBSD__)
error = extattr_delete_fd(fd, EXTATTR_NAMESPACE_USER, name);
#elif defined(__linux__)
error = fremovexattr(fd, name);
#elif defined(DARWIN)
error = fremovexattr(fd, name, 0);
#endif
return (error);
}
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