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; }