cliserv.h File Reference

#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <netinet/tcp.h>
#include <netinet/in.h>
#include <stdlib.h>
#include "nbd.h"

Go to the source code of this file.

Macros
#define	__be32   u32
#define	__be64   u64
#define	fdatasync(arg)   fsync(arg)
#define	G_GNUC_NORETURN
#define	G_GNUC_UNUSED
#define	INIT_PASSWD   "NBDMAGIC"
#define	INFO(a)   do { } while(0)
#define	htonll   ntohll
#define	NBD_DEFAULT_PORT
#define	NBD_OPT_EXPORT_NAME   (1) /** Client wants to select a named export (is followed by name of export) */
#define	NBD_OPT_ABORT   (2) /** Client wishes to abort negotiation */
#define	NBD_OPT_LIST   (3) /** Client request list of supported exports (not followed by data) */
#define	NBD_REP_ACK   (1) /** ACK a request. Data: option number to be acked */
#define	NBD_REP_SERVER   (2) /** Reply to NBD_OPT_LIST (one of these per server; must be followed by NBD_REP_ACK to signal the end of the list */
#define	NBD_REP_FLAG_ERROR   (1 << 31) /** If the high bit is set, the reply is an error */
#define	NBD_REP_ERR_UNSUP   (1 | NBD_REP_FLAG_ERROR) /** Client requested an option not understood by this version of the server */
#define	NBD_REP_ERR_POLICY   (2 | NBD_REP_FLAG_ERROR) /** Client requested an option not allowed by server configuration. (e.g., the option was disabled) */
#define	NBD_REP_ERR_INVALID   (3 | NBD_REP_FLAG_ERROR) /** Client issued an invalid request */
#define	NBD_REP_ERR_PLATFORM   (4 | NBD_REP_FLAG_ERROR) /** Option not supported on this platform */
#define	NBD_FLAG_FIXED_NEWSTYLE   (1 << 0) /* new-style export that actually supports extending */
#define	NBD_FLAG_NO_ZEROES   (1 << 1) /* we won't send the 128 bits of zeroes if the client sends NBD_FLAG_C_NO_ZEROES */
#define	NBD_FLAG_C_FIXED_NEWSTYLE   NBD_FLAG_FIXED_NEWSTYLE
#define	NBD_FLAG_C_NO_ZEROES   NBD_FLAG_NO_ZEROES

Functions
void	setmysockopt (int sock)
void	err_nonfatal (const char *s)
void	err (const char *s) G_GNUC_NORETURN
void	logging (const char *name)
uint64_t	ntohll (uint64_t a)

Variables
const u64	cliserv_magic
const u64	opts_magic
const u64	rep_magic

Macro Definition Documentation

#define __be32   u32

Definition at line 39 of file cliserv.h.

#define __be64   u64

Definition at line 40 of file cliserv.h.

#define fdatasync

(

arg

)

fsync(arg)

Definition at line 44 of file cliserv.h.

Referenced by expwrite(), and rawexpwrite().

#define G_GNUC_NORETURN

Definition at line 62 of file cliserv.h.

Referenced by serveloop().

#define G_GNUC_UNUSED

Definition at line 63 of file cliserv.h.

Referenced by main().

#define htonll   ntohll

Definition at line 83 of file cliserv.h.

Referenced by ask_list(), main(), negotiate(), send_export_info(), and send_reply().

#define INFO

(

a

)

do { } while(0)

Definition at line 73 of file cliserv.h.

Referenced by setmysockopt().

#define INIT_PASSWD   "NBDMAGIC"

Definition at line 71 of file cliserv.h.

Referenced by negotiate().

#define NBD_DEFAULT_PORT

Value:

"10809" /* Port on which named exports are
                                         * served */

Definition at line 85 of file cliserv.h.

Referenced by main(), and open_modern().

#define NBD_FLAG_C_FIXED_NEWSTYLE   NBD_FLAG_FIXED_NEWSTYLE

Definition at line 106 of file cliserv.h.

Referenced by main().

#define NBD_FLAG_C_NO_ZEROES   NBD_FLAG_NO_ZEROES

Definition at line 107 of file cliserv.h.

Referenced by negotiate().

#define NBD_FLAG_FIXED_NEWSTYLE   (1 << 0) /* new-style export that actually supports extending */

Definition at line 103 of file cliserv.h.

Referenced by main(), and negotiate().

#define NBD_FLAG_NO_ZEROES   (1 << 1) /* we won't send the 128 bits of zeroes if the client sends NBD_FLAG_C_NO_ZEROES */

Definition at line 104 of file cliserv.h.

Referenced by negotiate().

#define NBD_OPT_ABORT   (2) /** Client wishes to abort negotiation */

Definition at line 90 of file cliserv.h.

Referenced by ask_list(), and negotiate().

#define NBD_OPT_EXPORT_NAME   (1) /** Client wants to select a named export (is followed by name of export) */

Definition at line 89 of file cliserv.h.

Referenced by negotiate().

#define NBD_OPT_LIST   (3) /** Client request list of supported exports (not followed by data) */

Definition at line 91 of file cliserv.h.

Referenced by ask_list(), and negotiate().

#define NBD_REP_ACK   (1) /** ACK a request. Data: option number to be acked */

Definition at line 94 of file cliserv.h.

Referenced by ask_list(), and handle_list().

#define NBD_REP_ERR_INVALID   (3 | NBD_REP_FLAG_ERROR) /** Client issued an invalid request */

Definition at line 99 of file cliserv.h.

Referenced by handle_list().

#define NBD_REP_ERR_PLATFORM   (4 | NBD_REP_FLAG_ERROR) /** Option not supported on this platform */

Definition at line 100 of file cliserv.h.

#define NBD_REP_ERR_POLICY   (2 | NBD_REP_FLAG_ERROR) /** Client requested an option not allowed by server configuration. (e.g., the option was disabled) */

Definition at line 98 of file cliserv.h.

Referenced by ask_list(), and handle_list().

#define NBD_REP_ERR_UNSUP   (1 | NBD_REP_FLAG_ERROR) /** Client requested an option not understood by this version of the server */

Definition at line 97 of file cliserv.h.

Referenced by negotiate().

#define NBD_REP_FLAG_ERROR   (1 << 31) /** If the high bit is set, the reply is an error */

Definition at line 96 of file cliserv.h.

Referenced by ask_list().

#define NBD_REP_SERVER   (2) /** Reply to NBD_OPT_LIST (one of these per server; must be followed by NBD_REP_ACK to signal the end of the list */

Definition at line 95 of file cliserv.h.

Referenced by ask_list(), and handle_list().

Function Documentation

void err

(

const char *

s

)

Definition at line 56 of file cliserv.c.

References err_nonfatal().

Referenced by ask_list(), construct_path(), copyonwrite_prepare(), daemonize(), disconnect(), dousers(), finish_sock(), handle_export_name(), handle_list(), handle_oldstyle_connection(), main(), mainloop(), mkdir_path(), myseek(), negotiate(), open_treefile(), opennet(), parse_cfile(), readit(), send_export_info(), serveloop(), set_timeout(), setsizes(), setup_servers(), setupexport(), and writeit().

void err_nonfatal

(

const char *

s

)

Definition at line 30 of file cliserv.c.

Referenced by err(), handle_list(), negotiate(), opennet(), openunix(), and socket_accept().

void logging

(

const char *

name

)

Definition at line 61 of file cliserv.c.

References ntohll().

Referenced by main().

uint64_t ntohll

(

uint64_t

a

)

void setmysockopt

(

int

sock

)

Definition at line 12 of file cliserv.c.

References INFO.

Referenced by opennet(), and serveconnection().

Variable Documentation

const u64 cliserv_magic

Definition at line 8 of file cliserv.c.

Referenced by negotiate().

const u64 opts_magic

Definition at line 9 of file cliserv.c.

Referenced by ask_list(), and negotiate().

const u64 rep_magic

Definition at line 10 of file cliserv.c.

Referenced by ask_list().