/*
* Function: sys_get_eacontent
*
* Purpose: copy native EA into rbuf
*
* Arguments:
*
* vol (r) current volume
* rbuf (w) DSI reply buffer
* rbuflen (rw) current length of data in reply buffer
* uname (r) filename
* oflag (r) link and create flag
* attruname (r) name of attribute
* maxreply (r) maximum EA size as of current specs/real-life
* fd (r) file descriptor
* Returns: AFP code: AFP_OK on success or appropiate AFP error code
*
* Effects:
*
* Copies EA into rbuf. Increments *rbuflen accordingly.
*/
int sys_get_eacontent(VFS_FUNC_ARGS_EA_GETCONTENT)
{
ssize_t ret;
uint32_t attrsize;
/* Start building reply packet */
maxreply -= MAX_REPLY_EXTRA_BYTES;
if (maxreply > MAX_EA_SIZE)
maxreply = MAX_EA_SIZE;
LOG(log_debug7, logtype_afpd, "sys_getextattr_content(%s): attribute: \"%s\", size: %u", uname, attruname, maxreply);
if (vol->v_flags & AFPVOL_EA_SAMBA) {
maxreply++;
}
/* PBaranski fix */
if (fd != -1) {
LOG(log_debug, logtype_afpd, "sys_get_eacontent(%s): file is already opened", uname);
ret = sys_fgetxattr(fd, attruname, rbuf +4, maxreply);
} else {
if ((oflag & O_NOFOLLOW) ) {
ret = sys_lgetxattr(uname, attruname, rbuf +4, maxreply);
}
else {
ret = sys_getxattr(uname, attruname, rbuf +4, maxreply);
}
}
/* PBaranski fix */
if (ret == -1) {
memset(rbuf, 0, 4);
*rbuflen += 4;
switch(errno) {
case OPEN_NOFOLLOW_ERRNO:
/* its a symlink and client requested O_NOFOLLOW */
LOG(log_debug, logtype_afpd, "sys_getextattr_content(%s): symlink with kXAttrNoFollow", uname);
return AFPERR_MISC;
case ENOATTR:
if (vol->v_obj->afp_version >= 34)
return AFPERR_NOITEM;
return AFPERR_MISC;
default:
LOG(log_debug, logtype_afpd, "sys_getextattr_content(%s): error: %s", attruname, strerror(errno));
return AFPERR_MISC;
}
}
if (vol->v_flags & AFPVOL_EA_SAMBA) {
/* What can we do about xattrs that are 1 byte large? */
if (ret < 2) {
memset(rbuf, 0, 4);
*rbuflen += 4;
if (vol->v_obj->afp_version >= 34) {
return AFPERR_NOITEM;
}
return AFPERR_MISC;
}
ret--;
}
/* remember where we must store length of attribute data in rbuf */
*rbuflen += 4 +ret;
attrsize = htonl((uint32_t)ret);
memcpy(rbuf, &attrsize, 4);
return AFP_OK;
}
/*
* Function: sys_get_easize
*
* Purpose: get size of a native EA
*
* Arguments:
*
* vol (r) current volume
* rbuf (w) DSI reply buffer
* rbuflen (rw) current length of data in reply buffer
* uname (r) filename
* oflag (r) link and create flag
* attruname (r) name of attribute
*
* Returns: AFP code: AFP_OK on success or appropiate AFP error code
*
* Effects:
*
* Copies EA size into rbuf in network order. Increments *rbuflen +4.
*/
int sys_get_easize(VFS_FUNC_ARGS_EA_GETSIZE)
{
ssize_t ret;
uint32_t attrsize;
LOG(log_debug7, logtype_afpd, "sys_getextattr_size(%s): attribute: \"%s\"", uname, attruname);
/* PBaranski fix */
if (fd != -1) {
LOG(log_debug, logtype_afpd, "sys_get_easize(%s): file is already opened", uname);
ret = sys_fgetxattr(fd, attruname, rbuf +4, 0);
} else {
if ((oflag & O_NOFOLLOW) ) {
ret = sys_lgetxattr(uname, attruname, rbuf +4, 0);
}
else {
ret = sys_getxattr(uname, attruname, rbuf +4, 0);
}
}
/* PBaranski fix */
if (ret == -1) {
memset(rbuf, 0, 4);
*rbuflen += 4;
switch(errno) {
case OPEN_NOFOLLOW_ERRNO:
/* its a symlink and client requested O_NOFOLLOW */
LOG(log_debug, logtype_afpd, "sys_getextattr_size(%s): symlink with kXAttrNoFollow", uname);
return AFPERR_MISC;
case ENOATTR:
case ENOENT:
if (vol->v_obj->afp_version >= 34)
return AFPERR_NOITEM;
return AFPERR_MISC;
default:
LOG(log_debug, logtype_afpd, "sys_getextattr_size: error: %s", strerror(errno));
return AFPERR_MISC;
}
}
if (ret > MAX_EA_SIZE)
ret = MAX_EA_SIZE;
if (vol->v_flags & AFPVOL_EA_SAMBA) {
/* What can we do about xattrs that are 1 byte large? */
if (ret < 2) {
memset(rbuf, 0, 4);
*rbuflen += 4;
if (vol->v_obj->afp_version >= 34) {
return AFPERR_NOITEM;
}
return AFPERR_MISC;
}
ret--;
}
/* Start building reply packet */
LOG(log_debug7, logtype_afpd, "sys_getextattr_size(%s): attribute: \"%s\", size: %u", uname, attruname, ret);
/* length of attribute data */
attrsize = htonl((uint32_t)ret);
memcpy(rbuf, &attrsize, 4);
*rbuflen += 4;
ret = AFP_OK;
return ret;
}
ssize_t vfswrap_fgetxattr(struct vfs_handle_struct *handle, struct files_struct *fsp,int fd, const char *name, void *value, size_t size)
{
return sys_fgetxattr(fd, name, value, size);
}
