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Added a big endian extended attribute name for attrib and times

PERMISSION_HANDLING_BRANCH
Jean-Pierre André 2010-10-26 08:59:51 +02:00
parent 9c0e3a7b4e
commit 13b578d9b1
4 changed files with 73 additions and 0 deletions
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2
include/ntfs-3g/xattrs.h
View File

@ -30,11 +30,13 @@ enum SYSTEMXATTRS {
XATTR_UNMAPPED,
XATTR_NTFS_ACL,
XATTR_NTFS_ATTRIB,
XATTR_NTFS_ATTRIB_BE,
XATTR_NTFS_EFSINFO,
XATTR_NTFS_REPARSE_DATA,
XATTR_NTFS_OBJECT_ID,
XATTR_NTFS_DOS_NAME,
XATTR_NTFS_TIMES,
XATTR_NTFS_TIMES_BE,
XATTR_POSIX_ACC,
XATTR_POSIX_DEF
} ;

67
libntfs-3g/xattrs.c
View File

@ -65,11 +65,13 @@ static const int nf_ns_user_prefix_len = sizeof(nf_ns_user_prefix) - 1;
static const char nf_ns_xattr_ntfs_acl[] = "system.ntfs_acl";
static const char nf_ns_xattr_attrib[] = "system.ntfs_attrib";
static const char nf_ns_xattr_attrib_be[] = "system.ntfs_attrib_be";
static const char nf_ns_xattr_efsinfo[] = "user.ntfs.efsinfo";
static const char nf_ns_xattr_reparse[] = "system.ntfs_reparse_data";
static const char nf_ns_xattr_object_id[] = "system.ntfs_object_id";
static const char nf_ns_xattr_dos_name[] = "system.ntfs_dos_name";
static const char nf_ns_xattr_times[] = "system.ntfs_times";
static const char nf_ns_xattr_times_be[] = "system.ntfs_times_be";
static const char nf_ns_xattr_posix_access[] = "system.posix_acl_access";
static const char nf_ns_xattr_posix_default[] = "system.posix_acl_default";
@ -83,16 +85,41 @@ struct XATTRNAME {
static struct XATTRNAME nf_ns_xattr_names[] = {
{ XATTR_NTFS_ACL, nf_ns_xattr_ntfs_acl },
{ XATTR_NTFS_ATTRIB, nf_ns_xattr_attrib },
{ XATTR_NTFS_ATTRIB_BE, nf_ns_xattr_attrib_be },
{ XATTR_NTFS_EFSINFO, nf_ns_xattr_efsinfo },
{ XATTR_NTFS_REPARSE_DATA, nf_ns_xattr_reparse },
{ XATTR_NTFS_OBJECT_ID, nf_ns_xattr_object_id },
{ XATTR_NTFS_DOS_NAME, nf_ns_xattr_dos_name },
{ XATTR_NTFS_TIMES, nf_ns_xattr_times },
{ XATTR_NTFS_TIMES_BE, nf_ns_xattr_times_be },
{ XATTR_POSIX_ACC, nf_ns_xattr_posix_access },
{ XATTR_POSIX_DEF, nf_ns_xattr_posix_default },
{ XATTR_UNMAPPED, (char*)NULL } /* terminator */
};
/*
* Make an integer big-endian
*
* Swap bytes on a small-endian computer and does nothing on a
* big-endian computer.
*/
static void fix_big_endian(char *p, int size)
{
#if __BYTE_ORDER == __LITTLE_ENDIAN
int i,j;
int c;
i = 0;
j = size - 1;
while (i < j) {
c = p[i];
p[i++] = p[j];
p[j--] = c;
}
#endif
}
/*
* Determine whether an extended attribute is mapped to
* internal data (original name in system namespace, or renamed)
@ -184,6 +211,7 @@ int ntfs_xattr_system_getxattr(struct SECURITY_CONTEXT *scx,
char *value, size_t size)
{
int res;
int i;
/*
* the returned value is the needed
@ -208,6 +236,15 @@ int ntfs_xattr_system_getxattr(struct SECURITY_CONTEXT *scx,
case XATTR_NTFS_ATTRIB :
res = ntfs_get_ntfs_attrib(ni, value, size);
break;
case XATTR_NTFS_ATTRIB_BE :
res = ntfs_get_ntfs_attrib(ni, value, size);
if ((res == 4) && value) {
if (size >= 4)
fix_big_endian(value,4);
else
res = -EINVAL;
}
break;
case XATTR_NTFS_EFSINFO :
if (ni->vol->efs_raw)
res = ntfs_get_efs_info(ni, value, size);
@ -229,6 +266,14 @@ int ntfs_xattr_system_getxattr(struct SECURITY_CONTEXT *scx,
case XATTR_NTFS_TIMES:
res = ntfs_inode_get_times(ni, value, size);
break;
case XATTR_NTFS_TIMES_BE:
res = ntfs_inode_get_times(ni, value, size);
if ((res > 0) && value) {
for (i=0; (i+1)*sizeof(u64)<=(unsigned int)res; i++)
fix_big_endian(&value[i*sizeof(u64)],
sizeof(u64));
}
break;
default :
errno = EOPNOTSUPP;
res = -errno;
@ -243,6 +288,8 @@ int ntfs_xattr_system_setxattr(struct SECURITY_CONTEXT *scx,
const char *value, size_t size, int flags)
{
int res;
int i;
char buf[4*sizeof(u64)];
switch (attr) {
case XATTR_NTFS_ACL :
@ -261,6 +308,14 @@ int ntfs_xattr_system_setxattr(struct SECURITY_CONTEXT *scx,
case XATTR_NTFS_ATTRIB :
res = ntfs_set_ntfs_attrib(ni, value, size, flags);
break;
case XATTR_NTFS_ATTRIB_BE :
if (value && (size >= 4)) {
memcpy(buf,value,4);
fix_big_endian(buf,4);
res = ntfs_set_ntfs_attrib(ni, buf, 4, flags);
} else
res = ntfs_set_ntfs_attrib(ni, value, size, flags);
break;
case XATTR_NTFS_EFSINFO :
if (ni->vol->efs_raw)
res = ntfs_set_efs_info(ni, value, size, flags);
@ -284,6 +339,16 @@ int ntfs_xattr_system_setxattr(struct SECURITY_CONTEXT *scx,
case XATTR_NTFS_TIMES:
res = ntfs_inode_set_times(ni, value, size, flags);
break;
case XATTR_NTFS_TIMES_BE:
if (value && (size > 0) && (size <= 4*sizeof(u64))) {
memcpy(buf,value,size);
for (i=0; (i+1)*sizeof(u64)<=size; i++)
fix_big_endian(&buf[i*sizeof(u64)],
sizeof(u64));
res = ntfs_inode_set_times(ni, buf, size, flags);
} else
res = ntfs_inode_set_times(ni, value, size, flags);
break;
default :
errno = EOPNOTSUPP;
res = -errno;
@ -306,8 +371,10 @@ int ntfs_xattr_system_removexattr(struct SECURITY_CONTEXT *scx,
*/
case XATTR_NTFS_ACL :
case XATTR_NTFS_ATTRIB :
case XATTR_NTFS_ATTRIB_BE :
case XATTR_NTFS_EFSINFO :
case XATTR_NTFS_TIMES :
case XATTR_NTFS_TIMES_BE :
res = -EPERM;
break;
#if POSIXACLS

2
src/lowntfs-3g.c
View File

@ -3186,8 +3186,10 @@ static void ntfs_fuse_removexattr(fuse_req_t req, fuse_ino_t ino, const char *na
*/
case XATTR_NTFS_ACL :
case XATTR_NTFS_ATTRIB :
case XATTR_NTFS_ATTRIB_BE :
case XATTR_NTFS_EFSINFO :
case XATTR_NTFS_TIMES :
case XATTR_NTFS_TIMES_BE :
res = -EPERM;
break;
default :

2
src/ntfs-3g.c
View File

@ -3087,8 +3087,10 @@ static int ntfs_fuse_removexattr(const char *path, const char *name)
*/
case XATTR_NTFS_ACL :
case XATTR_NTFS_ATTRIB :
case XATTR_NTFS_ATTRIB_BE :
case XATTR_NTFS_EFSINFO :
case XATTR_NTFS_TIMES :
case XATTR_NTFS_TIMES_BE :
res = -EPERM;
break;
default :