static int hello_getattr(const char *path, struct stat *stbuf)
{
ETERM * response = erl_rpc(FERL_DATA->erlang_fd,"gen_server","call",erl_format("[nefs,{get_attr,~s}]",path));
ETERM * pattern = erl_format("{directory,Mode,Nlink}");
ETERM * pattern2 = erl_format("{file,Mode,Nlink,Size}");
int res = 0;
memset(stbuf, 0, sizeof(struct stat));
if(erl_match(pattern, response)) { //directory
ETERM * Mode = erl_var_content(pattern, "Mode");
ETERM * Nlink = erl_var_content(pattern, "Nlink");
if(ERL_IS_INTEGER(Nlink) && ERL_IS_INTEGER(Mode)){
stbuf->st_mode = S_IFDIR | ERL_INT_VALUE(Mode); //permissions
stbuf->st_nlink = ERL_INT_VALUE(Nlink); // directories have the number of files in them
}else{
res = -ENOENT;
}
}else if(erl_match(pattern2, response)){ //file
ETERM * Mode = erl_var_content(pattern2, "Mode");
ETERM * Nlink = erl_var_content(pattern2, "Nlink");
ETERM * Size = erl_var_content(pattern2, "Size");
if(ERL_IS_INTEGER(Nlink) && ERL_IS_INTEGER(Mode) && ERL_IS_INTEGER(Size)){
stbuf->st_mode = S_IFREG | ERL_INT_VALUE(Mode); //permissions
stbuf->st_nlink = ERL_INT_VALUE(Nlink); //files only have 1
stbuf->st_size = ERL_INT_VALUE(Size); // length of the file
}else{
res = -ENOENT;
}
}else{
res = -ENOENT;
}
return res;
}
erlang_pid *erl_whereis(int fd, const char *name)
{
ETERM *reply;
ETERM *n;
/* FIXME problem for threaded ? */
static erlang_pid pid;
n = erl_format("[~a]",name);
reply = erl_rpc(fd,"erlang","whereis",n);
erl_free_term(n);
if (reply && (ERL_IS_PID(reply))) {
char *node;
node = ERL_PID_NODE(reply);
strcpy(pid.node,node);
pid.num = ERL_PID_NUMBER(reply);
pid.serial = ERL_PID_SERIAL(reply);
pid.creation = ERL_PID_CREATION(reply);
erl_free_term(reply);
return &pid;
}
if (reply) erl_free_term(reply);
return NULL;
}
static int hello_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
int res = 0;
ETERM * response = erl_rpc(FERL_DATA->erlang_fd,"gen_server","call",erl_format("[nefs,{read_dir,~s}]",path));
ETERM * pattern = erl_format("{ok,Listing}");
if(erl_match(pattern, response)) { //directory
ETERM * Tail = erl_var_content(pattern, "Listing");
if(ERL_IS_LIST(Tail)){
while(!ERL_IS_EMPTY_LIST(Tail)){
ETERM * elem = ERL_CONS_HEAD(Tail);
// add in the links to the previous folders
filler(buf, ".", NULL, 0);
filler(buf, "..", NULL, 0);
// add in the folders contents
if(ERL_IS_LIST(elem)){
filler(buf,(char *)ERL_BIN_PTR(elem),NULL,0);
}else{
res = -ENOENT;
break;
}
Tail = ERL_CONS_TAIL(Tail);
}
}else{
res = -ENOENT;
}
}else{
res = -ENOENT;
}
return res;
}
static int hello_read(const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi)
{
int ret_bytes = 0;
ETERM * response = erl_rpc(FERL_DATA->erlang_fd,"file","pread",erl_format("[~s,{bof,~i},~i]",offset,size));
ETERM * pattern = erl_format("{ok,Data}");
if(erl_match(pattern, response)) {
ETERM * Data = erl_var_content(pattern, "Data");
if(ERL_IS_BINARY(Data)){
ret_bytes = ERL_BIN_SIZE(Data);
char * data = ERL_BIN_PTR(Data);
memcpy(buf,data,size); //copy the data over into the buffer
}
}
return ret_bytes;
}
int main(int argc, char *argv[])
{
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
int fd = -1;
if ((fd = erl_connect("nefs@Daniels-MacBook")) < 0)
erl_err_quit("erl_connect");
ferl_state FS={
.erlang_fd = fd
};
fprintf(stderr, "Connected to nefs@Daniels-MacBook\n\r");
erl_rpc(fd,"io","format",erl_format("[ping]"));
int retval = fuse_main(argc, argv, &hello_oper, (void *)&FS);
fprintf(stderr, "Finished\n\r");
return retval;
}
static int hello_open(const char *path, struct fuse_file_info *fi)
{
int res = 0;
ETERM * response = erl_rpc(FERL_DATA->erlang_fd,"gen_server","call",erl_format("[nefs,{open,~s,~i}]",path,fi->flags));
ETERM * pattern = erl_format("{ok,Fd}");
ETERM * pattern2 = erl_format("{error,access}");
if(erl_match(pattern, response)) {
ETERM * Fd_Pid = erl_var_content(pattern, "Fd");
if(ERL_IS_PID(Fd_Pid)){
fi->fh = Fd_Pid; //store off the file handle pid to be used in subsequent functions
}else{
res= -ENOENT;
}
}else if(erl_match(pattern2, response)){
res = -EACCES;
}else{
res = -ENOENT;
}
return res;
}
/**
* test utilities.
* create fcount files, every file size is fsize.
*/
int efs_shell_ww(int fcount, int fsize)
{
int ret;
ETERM *args;
ETERM *reply;
args = erl_format("[~i,~i]", fcount, fsize);
reply = erl_rpc(erlang_fd, "efs_shell", "ww", args);
if (reply == NULL) {
ret = EINVAL;
fprintf(stderr, "error %d\n", ret);
goto err_ret;
}
erl_free_term(reply);
erl_free_term(args);
return 0;
err_ret:
erl_free_term(args);
return ret;
}
int efs_create(const char *path, int mode)
{
int ret;
ETERM *args;
ETERM *reply;
args = erl_format("[~s]", path);
reply = erl_rpc(erlang_fd, "efs", "create", args);
if (reply == NULL) {
ret = EINVAL;
fprintf(stderr, "error %d\n", ret);
goto err_ret;
}
erl_free_term(reply);
erl_free_term(args);
return 0;
err_ret:
erl_free_term(args);
return ret;
}
int main(void)
#endif
{
ei_x_buff eix;
int index = 0;
ETERM **etermpp = NULL, *etermp = NULL;
char *charp = NULL;
unsigned char uchar, **ucharpp = NULL, *ucharp = NULL;
void *voidp = NULL;
Erl_Heap *erl_heapp = NULL;
int intx = 0;
int *intp = NULL;
unsigned int uintx, *uintp;
unsigned long *ulongp = NULL;
long longx = 0;
double doublex = 0.0;
short shortx = 42;
FILE *filep = NULL;
Erl_IpAddr erl_ipaddr = NULL;
ErlMessage *erlmessagep = NULL;
ErlConnect *erlconnectp = NULL;
struct hostent *hostp = NULL;
struct in_addr *inaddrp = NULL;
/* Converion to erl_interface format is in liberl_interface */
intx = erl_errno;
ei_encode_term(charp, &index, voidp);
ei_x_encode_term(&eix, voidp);
ei_decode_term(charp, &index, voidp);
erl_init(voidp, longx);
erl_connect_init(intx, charp,shortx);
erl_connect_xinit(charp,charp,charp,erl_ipaddr,charp,shortx);
erl_connect(charp);
erl_xconnect(erl_ipaddr,charp);
erl_close_connection(intx);
erl_receive(intx, ucharp, intx);
erl_receive_msg(intx, ucharp, intx, erlmessagep);
erl_xreceive_msg(intx, ucharpp, intp, erlmessagep);
erl_send(intx, etermp, etermp);
erl_reg_send(intx, charp, etermp);
erl_rpc(intx,charp,charp,etermp);
erl_rpc_to(intx,charp,charp,etermp);
erl_rpc_from(intx,intx,erlmessagep);
erl_publish(intx);
erl_accept(intx,erlconnectp);
erl_thiscookie();
erl_thisnodename();
erl_thishostname();
erl_thisalivename();
erl_thiscreation();
erl_unpublish(charp);
erl_err_msg(charp);
erl_err_quit(charp);
erl_err_ret(charp);
erl_err_sys(charp);
erl_cons(etermp,etermp);
erl_copy_term(etermp);
erl_element(intx,etermp);
erl_hd(etermp);
erl_iolist_to_binary(etermp);
erl_iolist_to_string(etermp);
erl_iolist_length(etermp);
erl_length(etermp);
erl_mk_atom(charp);
erl_mk_binary(charp,intx);
erl_mk_empty_list();
erl_mk_estring(charp, intx);
erl_mk_float(doublex);
erl_mk_int(intx);
erl_mk_list(etermpp,intx);
erl_mk_pid(charp,uintx,uintx,uchar);
erl_mk_port(charp,uintx,uchar);
erl_mk_ref(charp,uintx,uchar);
erl_mk_long_ref(charp,uintx,uintx,uintx,uchar);
erl_mk_string(charp);
erl_mk_tuple(etermpp,intx);
erl_mk_uint(uintx);
erl_mk_var(charp);
erl_print_term(filep,etermp);
/* erl_sprint_term(charp,etermp); */
erl_size(etermp);
erl_tl(etermp);
erl_var_content(etermp, charp);
erl_format(charp);
erl_match(etermp, etermp);
erl_global_names(intx, intp);
erl_global_register(intx, charp, etermp);
erl_global_unregister(intx, charp);
erl_global_whereis(intx, charp, charp);
erl_init_malloc(erl_heapp,longx);
erl_alloc_eterm(uchar);
erl_eterm_release();
erl_eterm_statistics(ulongp,ulongp);
erl_free_array(etermpp,intx);
erl_free_term(etermp);
erl_free_compound(etermp);
erl_malloc(longx);
erl_free(voidp);
erl_compare_ext(ucharp, ucharp);
erl_decode(ucharp);
erl_decode_buf(ucharpp);
erl_encode(etermp,ucharp);
erl_encode_buf(etermp,ucharpp);
erl_ext_size(ucharp);
erl_ext_type(ucharp);
erl_peek_ext(ucharp,intx);
erl_term_len(etermp);
erl_gethostbyname(charp);
erl_gethostbyaddr(charp, intx, intx);
erl_gethostbyname_r(charp, hostp, charp, intx, intp);
erl_gethostbyaddr_r(charp, intx, intx, hostp, charp, intx, intp);
erl_init_resolve();
erl_distversion(intx);
erl_epmd_connect(inaddrp);
erl_epmd_port(inaddrp, charp, intp);
charp = ERL_ATOM_PTR(etermp);
intx = ERL_ATOM_SIZE(etermp);
ucharp = ERL_BIN_PTR(etermp);
intx = ERL_BIN_SIZE(etermp);
etermp = ERL_CONS_HEAD(etermp);
etermp = ERL_CONS_TAIL(etermp);
intx = ERL_COUNT(etermp);
doublex= ERL_FLOAT_VALUE(etermp);
uintx = ERL_INT_UVALUE(etermp);
intx = ERL_INT_VALUE(etermp);
intx = ERL_IS_ATOM(etermp);
intx = ERL_IS_BINARY(etermp);
intx = ERL_IS_CONS(etermp);
intx = ERL_IS_EMPTY_LIST(etermp);
intx = ERL_IS_FLOAT(etermp);
intx = ERL_IS_INTEGER(etermp);
intx = ERL_IS_LIST(etermp);
intx = ERL_IS_PID(etermp);
intx = ERL_IS_PORT(etermp);
intx = ERL_IS_REF(etermp);
intx = ERL_IS_TUPLE(etermp);
intx = ERL_IS_UNSIGNED_INTEGER(etermp);
uchar = ERL_PID_CREATION(etermp);
charp = ERL_PID_NODE(etermp);
uintx = ERL_PID_NUMBER(etermp);
uintx = ERL_PID_SERIAL(etermp);
uchar = ERL_PORT_CREATION(etermp);
charp = ERL_PORT_NODE(etermp);
uintx = ERL_PORT_NUMBER(etermp);
uchar = ERL_REF_CREATION(etermp);
intx = ERL_REF_LEN(etermp);
charp = ERL_REF_NODE(etermp);
uintx = ERL_REF_NUMBER(etermp);
uintp = ERL_REF_NUMBERS(etermp);
etermp = ERL_TUPLE_ELEMENT(etermp,intx);
intx = ERL_TUPLE_SIZE(etermp);
return
BUFSIZ +
EAGAIN +
EHOSTUNREACH +
EINVAL +
EIO +
EMSGSIZE +
ENOMEM +
ERL_ATOM +
ERL_BINARY +
ERL_ERROR +
ERL_EXIT +
ERL_FLOAT +
ERL_INTEGER +
ERL_LINK +
ERL_LIST +
ERL_MSG +
ERL_NO_TIMEOUT +
ERL_PID +
ERL_PORT +
ERL_REF +
ERL_REG_SEND +
ERL_SEND +
ERL_SMALL_BIG +
ERL_TICK +
ERL_TIMEOUT +
ERL_TUPLE +
ERL_UNLINK +
ERL_U_INTEGER +
ERL_U_SMALL_BIG +
ERL_VARIABLE +
ETIMEDOUT +
MAXNODELEN +
MAXREGLEN;
}
