/*
* 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);
if ((oflag & O_NOFOLLOW) ) {
ret = sys_lgetxattr(uname, attruname, rbuf +4, 0);
}
else {
ret = sys_getxattr(uname, attruname, rbuf +4, 0);
}
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:
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;
/* 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;
}
/*
* 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
*
* 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 ((oflag & O_NOFOLLOW) ) {
ret = sys_lgetxattr(uname, attruname, rbuf +4, maxreply);
}
else {
ret = sys_getxattr(uname, attruname, rbuf +4, maxreply);
}
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:
return AFPERR_MISC;
default:
LOG(log_debug, logtype_afpd, "sys_getextattr_content(%s): error: %s", attruname, strerror(errno));
return AFPERR_MISC;
}
}
/* 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;
}
/*
* Function: sys_ea_copyfile
*
* Purpose: copy EAs
*
* Arguments:
*
* vol (r) current volume
* sdf (r) source file descriptor
* src (r) source path
* dst (r) destination path
*
* Return AFP code AFP_OK on success or appropriate AFP error code
*
* Effects:
*
* Copies EAs from source file to dest file.
*/
int sys_ea_copyfile(VFS_FUNC_ARGS_COPYFILE)
{
int ret = 0;
int cwd = -1;
ssize_t size;
char *names = NULL, *end_names, *name, *value = NULL;
unsigned int setxattr_ENOTSUP = 0;
if (sfd != -1) {
if ((cwd = open(".", O_RDONLY)) == -1) {
LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant open cwd: %s",
strerror(errno));
ret = -1;
goto getout;
}
}
if (sfd != -1) {
if (fchdir(sfd) == -1) {
LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to sfd: %s",
strerror(errno));
ret = -1;
goto getout;
}
}
size = sys_listxattr(src, NULL, 0);
if (size < 0) {
if (errno != ENOSYS && errno != ENOTSUP) {
ret = -1;
}
goto getout;
}
names = malloc(size+1);
if (names == NULL) {
ret = -1;
goto getout;
}
size = sys_listxattr(src, names, size);
if (size < 0) {
ret = -1;
goto getout;
} else {
names[size] = '\0';
end_names = names + size;
}
if (sfd != -1) {
if (fchdir(cwd) == -1) {
LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to cwd: %s",
strerror(errno));
ret = -1;
goto getout;
}
}
for (name = names; name != end_names; name = strchr(name, '\0') + 1) {
void *old_value;
/* check if this attribute shall be preserved */
if (!*name)
continue;
if (STRCMP(name, ==, AD_EA_META))
continue;
if (sfd != -1) {
if (fchdir(sfd) == -1) {
LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to sfd: %s",
strerror(errno));
ret = -1;
goto getout;
}
}
size = sys_getxattr (src, name, NULL, 0);
if (size < 0) {
ret = -1;
continue;
}
value = realloc(old_value = value, size);
if (size != 0 && value == NULL) {
free(old_value);
ret = -1;
}
size = sys_getxattr(src, name, value, size);
if (size < 0) {
ret = -1;
continue;
}
if (sfd != -1) {
if (fchdir(cwd) == -1) {
LOG(log_error, logtype_afpd, "sys_ea_copyfile: cant chdir to cwd: %s",
strerror(errno));
ret = -1;
goto getout;
}
}
if (sys_setxattr(dst, name, value, size, 0) != 0) {
if (errno == ENOTSUP)
setxattr_ENOTSUP++;
else {
if (errno == ENOSYS) {
ret = -1;
/* no hope of getting any further */
break;
} else {
ret = -1;
}
}
}
}
if (setxattr_ENOTSUP) {
errno = ENOTSUP;
ret = -1;
}
getout:
if (cwd != -1)
close(cwd);
free(value);
free(names);
if (ret == -1) {
switch(errno) {
case ENOENT:
/* no attribute */
break;
case EACCES:
LOG(log_debug, logtype_afpd, "sys_ea_copyfile(%s, %s): error: %s", src, dst, strerror(errno));
return AFPERR_ACCESS;
default:
LOG(log_error, logtype_afpd, "sys_ea_copyfile(%s, %s): error: %s", src, dst, strerror(errno));
return AFPERR_MISC;
}
}
return AFP_OK;
}
/*
* 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;
}
ssize_t vfswrap_getxattr(struct vfs_handle_struct *handle,struct connection_struct *conn,const char *path, const char *name, void *value, size_t size)
{
return sys_getxattr(path, name, value, size);
}
