linux/fs/smb/client/netmisc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 *   Copyright (c) International Business Machines  Corp., 2002,2008
 *   Author(s): Steve French ([email protected])
 *
 *   Error mapping routines from Samba libsmb/errormap.c
 *   Copyright (C) Andrew Tridgell 2001
 */

#include <linux/net.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <asm/div64.h>
#include <asm/byteorder.h>
#include <linux/inet.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "smberr.h"
#include "cifs_debug.h"
#include "nterr.h"

struct smb_to_posix_error { … };

static const struct smb_to_posix_error mapping_table_ERRDOS[] = …;

static const struct smb_to_posix_error mapping_table_ERRSRV[] = …;

/*
 * Convert a string containing text IPv4 or IPv6 address to binary form.
 *
 * Returns 0 on failure.
 */
static int
cifs_inet_pton(const int address_family, const char *cp, int len, void *dst)
{ … }

/*
 * Try to convert a string to an IPv4 address and then attempt to convert
 * it to an IPv6 address if that fails. Set the family field if either
 * succeeds. If it's an IPv6 address and it has a '%' sign in it, try to
 * treat the part following it as a numeric sin6_scope_id.
 *
 * Returns 0 on failure.
 */
int
cifs_convert_address(struct sockaddr *dst, const char *src, int len)
{ … }

void
cifs_set_port(struct sockaddr *addr, const unsigned short int port)
{ … }

/*****************************************************************************
convert a NT status code to a dos class/code
 *****************************************************************************/
/* NT status -> dos error map */
static const struct { … } ntstatus_to_dos_map[] = …;

/*****************************************************************************
 Print an error message from the status code
 *****************************************************************************/
static void
cifs_print_status(__u32 status_code)
{ … }


static void
ntstatus_to_dos(__u32 ntstatus, __u8 *eclass, __u16 *ecode)
{ … }

int
map_smb_to_linux_error(char *buf, bool logErr)
{ … }

int
map_and_check_smb_error(struct mid_q_entry *mid, bool logErr)
{ … }


/*
 * calculate the size of the SMB message based on the fixed header
 * portion, the number of word parameters and the data portion of the message
 */
unsigned int
smbCalcSize(void *buf)
{ … }

/* The following are taken from fs/ntfs/util.c */

#define NTFS_TIME_OFFSET …

/*
 * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
 * into Unix UTC (based 1970-01-01, in seconds).
 */
struct timespec64
cifs_NTtimeToUnix(__le64 ntutc)
{ … }

/* Convert the Unix UTC into NT UTC. */
u64
cifs_UnixTimeToNT(struct timespec64 t)
{ … }

static const int total_days_of_prev_months[] = …;

struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
{ … }