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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [smbfs/] [proc.c] - Blame information for rev 1782

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/*
 *  proc.c
 *
 *  Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
 *
 *  28/06/96 - Fixed long file name support (smb_proc_readdir_long) by Yuri Per
 */
 
#include <linux/config.h>
#include <linux/fs.h>
#include <linux/smbno.h>
#include <linux/smb_fs.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/malloc.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
#include <asm/segment.h>
#include <asm/string.h>
 
#define SMB_VWV(packet)  ((packet) + SMB_HEADER_LEN)
#define SMB_CMD(packet)  (BVAL(packet,8))
#define SMB_WCT(packet)  (BVAL(packet, SMB_HEADER_LEN - 1))
#define SMB_BCC(packet)  smb_bcc(packet)
#define SMB_BUF(packet)  ((packet) + SMB_HEADER_LEN + SMB_WCT(packet) * 2 + 2)
 
#define SMB_DIRINFO_SIZE 43
#define SMB_STATUS_SIZE  21
 
static int smb_request_ok(struct smb_server *s, int command, int wct, int bcc);
 
static inline int
min(int a, int b)
{
        return a < b ? a : b;
}
 
static void
str_upper(char *name)
{
        while (*name)
        {
                if (*name >= 'a' && *name <= 'z')
                        *name -= ('a' - 'A');
                name++;
        }
}
 
static void
str_lower(char *name)
{
        while (*name)
        {
                if (*name >= 'A' && *name <= 'Z')
                        *name += ('a' - 'A');
                name++;
        }
}
 
/*****************************************************************************/
/*                                                                           */
/*  Encoding/Decoding section                                                */
/*                                                                           */
/*****************************************************************************/
 
static inline byte *
smb_decode_word(byte * p, word * data)
{
        *data = WVAL(p, 0);
        return p + 2;
}
 
byte *
smb_encode_smb_length(byte * p, dword len)
{
        BSET(p, 0, 0);
        BSET(p, 1, 0);
        BSET(p, 2, (len & 0xFF00) >> 8);
        BSET(p, 3, (len & 0xFF));
        if (len > 0xFFFF)
        {
                BSET(p, 1, 1);
        }
        return p + 4;
}
 
static byte *
smb_encode_ascii(byte * p, const byte * name, int len)
{
        *p++ = 4;
        strcpy(p, name);
        return p + len + 1;
}
 
static byte *
smb_encode_this_name(byte * p, const char *name, const int len)
{
        *p++ = '\\';
        strncpy(p, name, len);
        return p + len;
}
 
/* I put smb_encode_parents into a separate function so that the
   recursion only takes 16 bytes on the stack per path component on a
   386. */
 
static byte *
smb_encode_parents(byte * p, struct smb_inode_info *ino)
{
        byte *q;
 
        if (ino->dir == NULL)
        {
                return p;
        }
        q = smb_encode_parents(p, ino->dir);
        if (q - p + 1 + ino->finfo.len > SMB_MAXPATHLEN)
        {
                return p;
        }
        return smb_encode_this_name(q, ino->finfo.name, ino->finfo.len);
}
 
static byte *
smb_encode_path(struct smb_server *server,
                byte * p, struct smb_inode_info *dir,
                const char *name, const int len)
{
        byte *start = p;
        if (dir != NULL)
        {
                p = smb_encode_parents(p, dir);
        }
        p = smb_encode_this_name(p, name, len);
        *p++ = 0;
        if (server->protocol <= PROTOCOL_COREPLUS)
        {
                str_upper(start);
        }
        return p;
}
 
static byte *
smb_decode_data(byte * p, byte * data, word * data_len, int fs)
{
        word len;
 
        if (!(*p == 1 || *p == 5))
        {
                printk("smb_decode_data: Warning! Data block not starting "
                       "with 1 or 5\n");
        }
        len = WVAL(p, 1);
        p += 3;
 
        if (fs)
                memcpy_tofs(data, p, len);
        else
                memcpy(data, p, len);
 
        *data_len = len;
 
        return p + len;
}
 
static byte *
smb_name_mangle(byte * p, const byte * name)
{
        int len, pad = 0;
 
        len = strlen(name);
 
        if (len < 16)
                pad = 16 - len;
 
        *p++ = 2 * (len + pad);
 
        while (*name)
        {
                *p++ = (*name >> 4) + 'A';
                *p++ = (*name & 0x0F) + 'A';
                name++;
        }
        while (pad--)
        {
                *p++ = 'C';
                *p++ = 'A';
        }
        *p++ = '\0';
 
        return p;
}
 
/* The following are taken directly from msdos-fs */
 
/* Linear day numbers of the respective 1sts in non-leap years. */
 
static int day_n[] =
{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
                  /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
 
 
extern struct timezone sys_tz;
 
static int
utc2local(int time)
{
        return time - sys_tz.tz_minuteswest * 60 + sys_tz.tz_dsttime * 3600;
}
 
static int
local2utc(int time)
{
        return time + sys_tz.tz_minuteswest * 60 - sys_tz.tz_dsttime * 3600;
}
 
/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
 
static int
date_dos2unix(unsigned short time, unsigned short date)
{
        int month, year, secs;
 
        month = ((date >> 5) & 15) - 1;
        year = date >> 9;
        secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
            ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
                                                   month < 2 ? 1 : 0) + 3653);
        /* days since 1.1.70 plus 80's leap day */
        return local2utc(secs);
}
 
/*****************************************************************************/
/*                                                                           */
/*  Support section.                                                         */
/*                                                                           */
/*****************************************************************************/
 
dword
smb_len(byte * p)
{
        return ((BVAL(p, 1) & 0x1) << 16L) | (BVAL(p, 2) << 8L) | (BVAL(p, 3));
}
 
static word
smb_bcc(byte * packet)
{
        int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(word);
        return WVAL(packet, pos);
}
 
/* smb_valid_packet: We check if packet fulfills the basic
   requirements of a smb packet */
 
static int
smb_valid_packet(byte * packet)
{
        DDPRINTK("len: %d, wct: %d, bcc: %d\n",
                 smb_len(packet), SMB_WCT(packet), SMB_BCC(packet));
        return (packet[4] == 0xff
                && packet[5] == 'S'
                && packet[6] == 'M'
                && packet[7] == 'B'
                && (smb_len(packet) + 4 == SMB_HEADER_LEN
                    + SMB_WCT(packet) * 2 + SMB_BCC(packet)));
}
 
/* smb_verify: We check if we got the answer we expected, and if we
   got enough data. If bcc == -1, we don't care. */
 
static int
smb_verify(byte * packet, int command, int wct, int bcc)
{
        return (SMB_CMD(packet) == command &&
                SMB_WCT(packet) >= wct &&
                (bcc == -1 || SMB_BCC(packet) >= bcc)) ? 0 : -EIO;
}
 
static int
smb_errno(int errcls, int error)
{
        if (errcls == ERRDOS)
                switch (error)
                {
                case ERRbadfunc:
                        return EINVAL;
                case ERRbadfile:
                        return ENOENT;
                case ERRbadpath:
                        return ENOENT;
                case ERRnofids:
                        return EMFILE;
                case ERRnoaccess:
                        return EACCES;
                case ERRbadfid:
                        return EBADF;
                case ERRbadmcb:
                        return EREMOTEIO;
                case ERRnomem:
                        return ENOMEM;
                case ERRbadmem:
                        return EFAULT;
                case ERRbadenv:
                        return EREMOTEIO;
                case ERRbadformat:
                        return EREMOTEIO;
                case ERRbadaccess:
                        return EACCES;
                case ERRbaddata:
                        return E2BIG;
                case ERRbaddrive:
                        return ENXIO;
                case ERRremcd:
                        return EREMOTEIO;
                case ERRdiffdevice:
                        return EXDEV;
                case ERRnofiles:
                        return 0;
                case ERRbadshare:
                        return ETXTBSY;
                case ERRlock:
                        return EDEADLK;
                case ERRfilexists:
                        return EEXIST;
                case 87:
                        return 0;        /* Unknown error!! */
                        /* This next error seems to occur on an mv when
                         * the destination exists */
                case 183:
                        return EEXIST;
                default:
                        return EIO;
        } else if (errcls == ERRSRV)
                switch (error)
                {
                case ERRerror:
                        return ENFILE;
                case ERRbadpw:
                        return EINVAL;
                case ERRbadtype:
                        return EIO;
                case ERRaccess:
                        return EACCES;
                default:
                        return EIO;
        } else if (errcls == ERRHRD)
                switch (error)
                {
                case ERRnowrite:
                        return EROFS;
                case ERRbadunit:
                        return ENODEV;
                case ERRnotready:
                        return EUCLEAN;
                case ERRbadcmd:
                        return EIO;
                case ERRdata:
                        return EIO;
                case ERRbadreq:
                        return ERANGE;
                case ERRbadshare:
                        return ETXTBSY;
                case ERRlock:
                        return EDEADLK;
                default:
                        return EIO;
        } else if (errcls == ERRCMD)
                return EIO;
        return 0;
}
 
static void
smb_lock_server(struct smb_server *server)
{
        while (server->lock)
                sleep_on(&server->wait);
        server->lock = 1;
}
 
static void
smb_unlock_server(struct smb_server *server)
{
        if (server->lock != 1)
        {
                printk("smb_unlock_server: was not locked!\n");
        }
        server->lock = 0;
        wake_up(&server->wait);
}
 
/* smb_request_ok: We expect the server to be locked. Then we do the
   request and check the answer completely. When smb_request_ok
   returns 0, you can be quite sure that everything went well. When
   the answer is <=0, the returned number is a valid unix errno. */
 
static int
smb_request_ok(struct smb_server *s, int command, int wct, int bcc)
{
        int result = 0;
        s->rcls = 0;
        s->err = 0;
 
        if (smb_request(s) < 0)
        {
                DPRINTK("smb_request failed\n");
                result = -EIO;
        } else if (smb_valid_packet(s->packet) != 0)
        {
                DPRINTK("not a valid packet!\n");
                result = -EIO;
        } else if (s->rcls != 0)
        {
                result = -smb_errno(s->rcls, s->err);
        } else if (smb_verify(s->packet, command, wct, bcc) != 0)
        {
                DPRINTK("smb_verify failed\n");
                result = -EIO;
        }
        return result;
}
 
/* smb_retry: This function should be called when smb_request_ok has
   indicated an error. If the error was indicated because the
   connection was killed, we try to reconnect. If smb_retry returns 0,
   the error was indicated for another reason, so a retry would not be
   of any use. */
 
static int
smb_retry(struct smb_server *server)
{
        if (server->state != CONN_INVALID)
        {
                return 0;
        }
        if (smb_release(server) < 0)
        {
                DPRINTK("smb_retry: smb_release failed\n");
                server->state = CONN_RETRIED;
                return 0;
        }
        if (smb_proc_reconnect(server) < 0)
        {
                DPRINTK("smb_proc_reconnect failed\n");
                server->state = CONN_RETRIED;
                return 0;
        }
        server->state = CONN_VALID;
        return 1;
}
 
static int
smb_request_ok_unlock(struct smb_server *s, int command, int wct, int bcc)
{
        int result = smb_request_ok(s, command, wct, bcc);
 
        smb_unlock_server(s);
 
        return result;
}
 
/* smb_setup_header: We completely set up the packet. You only have to
   insert the command-specific fields */
 
__u8 *
smb_setup_header(struct smb_server * server, byte command, word wct, word bcc)
{
        dword xmit_len = SMB_HEADER_LEN + wct * sizeof(word) + bcc + 2;
        byte *p = server->packet;
        byte *buf = server->packet;
 
        p = smb_encode_smb_length(p, xmit_len - 4);
 
        BSET(p, 0, 0xff);
        BSET(p, 1, 'S');
        BSET(p, 2, 'M');
        BSET(p, 3, 'B');
        BSET(p, 4, command);
 
        p += 5;
        memset(p, '\0', 19);
        p += 19;
        p += 8;
 
        WSET(buf, smb_tid, server->tid);
        WSET(buf, smb_pid, server->pid);
        WSET(buf, smb_uid, server->server_uid);
        WSET(buf, smb_mid, server->mid);
 
        if (server->protocol > PROTOCOL_CORE)
        {
                BSET(buf, smb_flg, 0x8);
                WSET(buf, smb_flg2, 0x3);
        }
        *p++ = wct;             /* wct */
        p += 2 * wct;
        WSET(p, 0, bcc);
        return p + 2;
}
 
/* smb_setup_header_exclusive waits on server->lock and locks the
   server, when it's free. You have to unlock it manually when you're
   finished with server->packet! */
 
static byte *
smb_setup_header_exclusive(struct smb_server *server,
                           byte command, word wct, word bcc)
{
        smb_lock_server(server);
        return smb_setup_header(server, command, wct, bcc);
}
 
static void
smb_setup_bcc(struct smb_server *server, byte * p)
{
        __u8 *packet = server->packet;
        __u8 *pbcc = packet + SMB_HEADER_LEN + 2 * SMB_WCT(packet);
        __u16 bcc = p - (pbcc + 2);
 
        WSET(pbcc, 0, bcc);
        smb_encode_smb_length(packet,
                              SMB_HEADER_LEN + 2 * SMB_WCT(packet) - 2 + bcc);
}
 
 
/*****************************************************************************/
/*                                                                           */
/*  File operation section.                                                  */
/*                                                                           */
/*****************************************************************************/
 
int
smb_proc_open(struct smb_server *server,
              struct smb_inode_info *dir, const char *name, int len,
              struct smb_dirent *entry)
{
        int error;
        char *p;
        char *buf;
        const word o_attr = aSYSTEM | aHIDDEN | aDIR;
 
        DPRINTK("smb_proc_open: name=%s\n", name);
 
        smb_lock_server(server);
 
        if (entry->opened != 0)
        {
                /* Somebody else opened the file while we slept */
                smb_unlock_server(server);
                return 0;
        }
      retry:
        buf = server->packet;
        p = smb_setup_header(server, SMBopen, 2, 0);
        WSET(buf, smb_vwv0, 0x42);      /* read/write */
        WSET(buf, smb_vwv1, o_attr);
        *p++ = 4;
        p = smb_encode_path(server, p, dir, name, len);
        smb_setup_bcc(server, p);
 
        if ((error = smb_request_ok(server, SMBopen, 7, 0)) != 0)
        {
 
                if (smb_retry(server))
                {
                        goto retry;
                }
                if ((error != -EACCES) && (error != -ETXTBSY)
                    && (error != -EROFS))
                {
                        smb_unlock_server(server);
                        return error;
                }
                /* N.B. Packet may change after request */
                buf = server->packet;
                p = smb_setup_header(server, SMBopen, 2, 0);
                WSET(buf, smb_vwv0, 0x40);      /* read only */
                WSET(buf, smb_vwv1, o_attr);
                *p++ = 4;
                p = smb_encode_path(server, p, dir, name, len);
                smb_setup_bcc(server, p);
 
                if ((error = smb_request_ok(server, SMBopen, 7, 0)) != 0)
                {
                        if (smb_retry(server))
                        {
                                goto retry;
                        }
                        smb_unlock_server(server);
                        return error;
                }
        }
        /* We should now have data in vwv[0..6]. */
 
        /* N.B. Packet may change after request */
        buf = server->packet;
        entry->fileid = WVAL(buf, smb_vwv0);
        entry->attr = WVAL(buf, smb_vwv1);
        entry->f_ctime = entry->f_atime =
            entry->f_mtime = local2utc(DVAL(buf, smb_vwv2));
        entry->f_size = DVAL(buf, smb_vwv4);
        entry->access = WVAL(buf, smb_vwv6);
 
        entry->opened = 1;
        entry->access &= 3;
 
        smb_unlock_server(server);
 
        DPRINTK("smb_proc_open: entry->access = %d\n", entry->access);
        return 0;
}
 
int
smb_proc_close(struct smb_server *server,
               __u16 fileid, __u32 mtime)
{
        char *buf;
 
        smb_setup_header_exclusive(server, SMBclose, 3, 0);
        buf = server->packet;
        WSET(buf, smb_vwv0, fileid);
        DSET(buf, smb_vwv1, utc2local(mtime));
 
        return smb_request_ok_unlock(server, SMBclose, 0, 0);
}
 
/* In smb_proc_read and smb_proc_write we do not retry, because the
   file-id would not be valid after a reconnection. */
 
/* smb_proc_read: fs indicates if it should be copied with
   memcpy_tofs. */
 
int
smb_proc_read(struct smb_server *server, struct smb_dirent *finfo,
              off_t offset, long count, char *data, int fs)
{
        word returned_count, data_len;
        char *buf;
        int error;
 
        smb_setup_header_exclusive(server, SMBread, 5, 0);
        buf = server->packet;
 
        WSET(buf, smb_vwv0, finfo->fileid);
        WSET(buf, smb_vwv1, count);
        DSET(buf, smb_vwv2, offset);
        WSET(buf, smb_vwv4, 0);
 
        if ((error = smb_request_ok(server, SMBread, 5, -1)) < 0)
        {
                smb_unlock_server(server);
                return error;
        }
        returned_count = WVAL(server->packet, smb_vwv0);
 
        smb_decode_data(SMB_BUF(server->packet), data, &data_len, fs);
 
        smb_unlock_server(server);
 
        if (returned_count != data_len)
        {
                printk("smb_proc_read: Warning, returned_count != data_len\n");
                printk("smb_proc_read: ret_c=%d, data_len=%d\n",
                       returned_count, data_len);
        }
        return data_len;
}
 
int
smb_proc_write(struct smb_server *server, struct smb_dirent *finfo,
               off_t offset, int count, const char *data)
{
        int res = 0;
        char *buf;
        byte *p;
 
        p = smb_setup_header_exclusive(server, SMBwrite, 5, count + 3);
        buf = server->packet;
        WSET(buf, smb_vwv0, finfo->fileid);
        WSET(buf, smb_vwv1, count);
        DSET(buf, smb_vwv2, offset);
        WSET(buf, smb_vwv4, 0);
 
        *p++ = 1;
        WSET(p, 0, count);
        memcpy_fromfs(p + 2, data, count);
 
        if ((res = smb_request_ok(server, SMBwrite, 1, 0)) >= 0)
        {
                res = WVAL(server->packet, smb_vwv0);
        }
        smb_unlock_server(server);
 
        return res;
}
 
int
smb_proc_create(struct inode *dir, const char *name, int len,
                word attr, time_t ctime)
{
        int error;
        char *p;
        struct smb_server *server = SMB_SERVER(dir);
        char *buf;
        __u16 fileid;
 
        smb_lock_server(server);
      retry:
        buf = server->packet;
        p = smb_setup_header(server, SMBcreate, 3, 0);
        WSET(buf, smb_vwv0, attr);
        DSET(buf, smb_vwv1, utc2local(ctime));
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
        smb_setup_bcc(server, p);
 
        if ((error = smb_request_ok(server, SMBcreate, 1, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
                smb_unlock_server(server);
                return error;
        }
        fileid = WVAL(server->packet, smb_vwv0);
        smb_unlock_server(server);
 
        smb_proc_close(server, fileid, CURRENT_TIME);
 
        return 0;
}
 
int
smb_proc_mv(struct inode *odir, const char *oname, const int olen,
            struct inode *ndir, const char *nname, const int nlen)
{
        char *p;
        struct smb_server *server = SMB_SERVER(odir);
        int result;
 
        smb_lock_server(server);
 
      retry:
        p = smb_setup_header(server, SMBmv, 1, 0);
        WSET(server->packet, smb_vwv0, aSYSTEM | aHIDDEN);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(odir), oname, olen);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(ndir), nname, nlen);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBmv, 0, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_mkdir(struct inode *dir, const char *name, const int len)
{
        char *p;
        int result;
        struct smb_server *server = SMB_SERVER(dir);
 
        smb_lock_server(server);
 
      retry:
        p = smb_setup_header(server, SMBmkdir, 0, 0);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBmkdir, 0, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_rmdir(struct inode *dir, const char *name, const int len)
{
        char *p;
        int result;
        struct smb_server *server = SMB_SERVER(dir);
 
        smb_lock_server(server);
 
      retry:
        p = smb_setup_header(server, SMBrmdir, 0, 0);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBrmdir, 0, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_unlink(struct inode *dir, const char *name, const int len)
{
        char *p;
        struct smb_server *server = SMB_SERVER(dir);
        int result;
 
        smb_lock_server(server);
 
      retry:
        p = smb_setup_header(server, SMBunlink, 1, 0);
        WSET(server->packet, smb_vwv0, aSYSTEM | aHIDDEN);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBunlink, 0, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_trunc(struct smb_server *server, word fid, dword length)
{
        char *p;
        char *buf;
        int result;
 
        smb_lock_server(server);
 
      retry:
        buf = server->packet;
        p = smb_setup_header(server, SMBwrite, 5, 0);
        WSET(buf, smb_vwv0, fid);
        WSET(buf, smb_vwv1, 0);
        DSET(buf, smb_vwv2, length);
        WSET(buf, smb_vwv4, 0);
        p = smb_encode_ascii(p, "", 0);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBwrite, 1, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
static void
smb_init_dirent(struct smb_server *server, struct smb_dirent *entry)
{
        memset(entry, 0, sizeof(struct smb_dirent));
 
        entry->f_nlink = 1;
        entry->f_uid = server->m.uid;
        entry->f_gid = server->m.gid;
        entry->f_blksize = 512;
}
 
static void
smb_finish_dirent(struct smb_server *server, struct smb_dirent *entry)
{
        if ((entry->attr & aDIR) != 0)
        {
                entry->f_mode = server->m.dir_mode;
                entry->f_size = 512;
        } else
        {
                entry->f_mode = server->m.file_mode;
        }
 
        if (entry->attr & aRONLY)
                entry->f_mode &= ~0222;
 
        if ((entry->f_blksize != 0) && (entry->f_size != 0))
        {
                entry->f_blocks =
                    (entry->f_size - 1) / entry->f_blksize + 1;
        } else
        {
                entry->f_blocks = 0;
        }
        return;
}
 
void
smb_init_root_dirent(struct smb_server *server, struct smb_dirent *entry)
{
        smb_init_dirent(server, entry);
        entry->attr = aDIR;
        entry->f_ino = 1;
        smb_finish_dirent(server, entry);
}
 
 
static char *
smb_decode_dirent(struct smb_server *server, char *p, struct smb_dirent *entry)
{
        smb_init_dirent(server, entry);
 
        p += SMB_STATUS_SIZE;   /* reserved (search_status) */
        entry->attr = BVAL(p, 0);
        entry->f_mtime = entry->f_atime = entry->f_ctime =
            date_dos2unix(WVAL(p, 1), WVAL(p, 3));
        entry->f_size = DVAL(p, 5);
        entry->len = strlen(p + 9);
        if (entry->len > 12)
        {
                entry->len = 12;
        }
        memcpy(entry->name, p + 9, entry->len);
        entry->name[entry->len] = '\0';
        while (entry->len > 2)
        {
                /* Pathworks fills names with spaces */
                entry->len -= 1;
                if (entry->name[entry->len] == ' ')
                {
                        entry->name[entry->len] = '\0';
                }
        }
        switch (server->case_handling)
        {
        case CASE_UPPER:
                str_upper(entry->name);
                break;
        case CASE_LOWER:
                str_lower(entry->name);
                break;
        default:
                break;
        }
        DPRINTK("smb_decode_dirent: name = %s\n", entry->name);
        smb_finish_dirent(server, entry);
        return p + 22;
}
 
/* This routine is used to read in directory entries from the network.
   Note that it is for short directory name seeks, i.e.: protocol <
   PROTOCOL_LANMAN2 */
 
static int
smb_proc_readdir_short(struct smb_server *server, struct inode *dir, int fpos,
                       int cache_size, struct smb_dirent *entry)
{
        char *p;
        char *buf;
        int error;
        int result;
        int i;
        int first, total_count;
        struct smb_dirent *current_entry;
        word bcc;
        word count;
        char status[SMB_STATUS_SIZE];
        int entries_asked = (server->max_xmit - 100) / SMB_DIRINFO_SIZE;
 
        DPRINTK("SMB call  readdir %d @ %d\n", cache_size, fpos);
 
        smb_lock_server(server);
 
      retry:
        buf = server->packet;
        first = 1;
        total_count = 0;
        current_entry = entry;
 
        while (1)
        {
                if (first == 1)
                {
                        p = smb_setup_header(server, SMBsearch, 2, 0);
                        WSET(buf, smb_vwv0, entries_asked);
                        WSET(buf, smb_vwv1, aDIR);
                        *p++ = 4;
                        p = smb_encode_path(server, p, SMB_INOP(dir), "*.*", 3);
                        *p++ = 5;
                        WSET(p, 0, 0);
                        p += 2;
                } else
                {
                        p = smb_setup_header(server, SMBsearch, 2, 0);
                        WSET(buf, smb_vwv0, entries_asked);
                        WSET(buf, smb_vwv1, aDIR);
                        p = smb_encode_ascii(p, "", 0);
                        *p++ = 5;
                        WSET(p, 0, SMB_STATUS_SIZE);
                        p += 2;
                        memcpy(p, status, SMB_STATUS_SIZE);
                        p += SMB_STATUS_SIZE;
                }
 
                smb_setup_bcc(server, p);
 
                if ((error = smb_request_ok(server, SMBsearch, 1, -1)) < 0)
                {
                        if ((server->rcls == ERRDOS)
                            && (server->err == ERRnofiles))
                        {
                                result = total_count - fpos;
                                goto unlock_return;
                        } else
                        {
                                if (smb_retry(server))
                                {
                                        goto retry;
                                }
                                result = error;
                                goto unlock_return;
                        }
                }
                p = SMB_VWV(server->packet);
                p = smb_decode_word(p, &count);
                p = smb_decode_word(p, &bcc);
 
                first = 0;
 
                if (count <= 0)
                {
                        result = total_count - fpos;
                        goto unlock_return;
                }
                if (bcc != count * SMB_DIRINFO_SIZE + 3)
                {
                        result = -EIO;
                        goto unlock_return;
                }
                p += 3;         /* Skipping VBLOCK header
                                   (5, length lo, length hi). */
 
                /* Read the last entry into the status field. */
                memcpy(status,
                       SMB_BUF(server->packet) + 3 +
                       (count - 1) * SMB_DIRINFO_SIZE,
                       SMB_STATUS_SIZE);
 
                /* Now we are ready to parse smb directory entries. */
 
                for (i = 0; i < count; i++)
                {
                        if (total_count < fpos)
                        {
                                p += SMB_DIRINFO_SIZE;
                                DDPRINTK("smb_proc_readdir: skipped entry.\n");
                                DDPRINTK("                  total_count = %d\n"
                                         "                i = %d, fpos = %d\n",
                                         total_count, i, fpos);
                        } else if (total_count >= fpos + cache_size)
                        {
                                result = total_count - fpos;
                                goto unlock_return;
                        } else
                        {
                                p = smb_decode_dirent(server, p,
                                                      current_entry);
                                current_entry->f_pos = total_count;
                                DDPRINTK("smb_proc_readdir: entry->f_pos = "
                                         "%lu\n", entry->f_pos);
                                current_entry += 1;
                        }
                        total_count += 1;
                }
        }
      unlock_return:
        smb_unlock_server(server);
        return result;
}
 
/* interpret a long filename structure - this is mostly guesses at the
   moment.  The length of the structure is returned.  The structure of
   a long filename depends on the info level. 260 is used by NT and 2
   is used by OS/2. */
 
static char *
smb_decode_long_dirent(struct smb_server *server, char *p,
                       struct smb_dirent *entry, int level)
{
        char *result;
 
        smb_init_dirent(server, entry);
 
        switch (level)
        {
                /* We might add more levels later... */
        case 1:
                entry->len = BVAL(p, 26);
                strncpy(entry->name, p + 27, entry->len);
                entry->name[entry->len] = '\0';
                entry->f_size = DVAL(p, 16);
                entry->attr = BVAL(p, 24);
 
                entry->f_ctime = date_dos2unix(WVAL(p, 6), WVAL(p, 4));
                entry->f_atime = date_dos2unix(WVAL(p, 10), WVAL(p, 8));
                entry->f_mtime = date_dos2unix(WVAL(p, 14), WVAL(p, 12));
                result = p + 28 + BVAL(p, 26);
                break;
 
        default:
                DPRINTK("Unknown long filename format %d\n", level);
                result = p + WVAL(p, 0);
        }
 
        switch (server->case_handling)
        {
        case CASE_UPPER:
                str_upper(entry->name);
                break;
        case CASE_LOWER:
                str_lower(entry->name);
                break;
        default:
                break;
        }
 
        smb_finish_dirent(server, entry);
        return result;
}
 
int
smb_proc_readdir_long(struct smb_server *server, struct inode *dir, int fpos,
                      int cache_size, struct smb_dirent *cache)
{
        /* NT uses 260, OS/2 uses 2. Both accept 1. */
        const int info_level = 1;
        const int max_matches = 512;
 
        char *p;
        char *lastname;
        int lastname_len;
        int i;
        int first, entries, entries_seen;
 
        unsigned char *resp_data = NULL;
        unsigned char *resp_param = NULL;
        int resp_data_len = 0;
        int resp_param_len = 0;
 
        __u16 command;
 
        int result;
 
        int ff_resume_key = 0;
        int ff_searchcount = 0;
        int ff_eos = 0;
        int ff_lastname = 0;
        int ff_dir_handle = 0;
        int loop_count = 0;
 
        char param[SMB_MAXPATHLEN + 2 + 12];
        int mask_len;
        unsigned char *mask = &(param[12]);
 
        mask_len = smb_encode_path(server, mask,
                                   SMB_INOP(dir), "*", 1) - mask;
 
        mask[mask_len] = 0;
        mask[mask_len + 1] = 0;
 
        DPRINTK("smb_readdir_long cache=%d, fpos=%d, mask=%s\n",
                cache_size, fpos, mask);
 
        smb_lock_server(server);
 
      retry:
 
        first = 1;
        entries = 0;
        entries_seen = 2;
 
        while (ff_eos == 0)
        {
                loop_count += 1;
                if (loop_count > 200)
                {
                        printk("smb_proc_readdir_long: "
                               "Looping in FIND_NEXT??\n");
                        break;
                }
                if (first != 0)
                {
                        command = TRANSACT2_FINDFIRST;
                        WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
                        WSET(param, 2, max_matches);    /* max count */
                        WSET(param, 4, 8 + 4 + 2);      /* resume required +
                                                           close on end +
                                                           continue */
                        WSET(param, 6, info_level);
                        DSET(param, 8, 0);
                } else
                {
                        command = TRANSACT2_FINDNEXT;
                        DPRINTK("hand=0x%X resume=%d ff_lastname=%d mask=%s\n",
                             ff_dir_handle, ff_resume_key, ff_lastname, mask);
                        WSET(param, 0, ff_dir_handle);
                        WSET(param, 2, max_matches);    /* max count */
                        WSET(param, 4, info_level);
                        DSET(param, 6, ff_resume_key);  /* ff_resume_key */
                        WSET(param, 10, 8 + 4 + 2);     /* resume required +
                                                           close on end +
                                                           continue */
                }
#ifdef CONFIG_SMB_WIN95
                /* Windows 95 is not able to deliver answers
                   to FIND_NEXT fast enough, so sleep 0.2 seconds */
                current->timeout = jiffies + HZ / 5;
                current->state = TASK_INTERRUPTIBLE;
                schedule();
                current->timeout = 0;
#endif
 
                result = smb_trans2_request(server, command,
                                            0, NULL, 12 + mask_len + 2, param,
                                            &resp_data_len, &resp_data,
                                            &resp_param_len, &resp_param);
 
                if (result < 0)
                {
                        if (smb_retry(server))
                        {
                                goto retry;
                        }
                        DPRINTK("smb_proc_readdir_long: "
                                "got error from trans2_request\n");
                        break;
                }
                if (server->rcls != 0)
                {
                        result = -EIO;
                        break;
                }
                /* parse out some important return info */
                if (first != 0)
                {
                        ff_dir_handle = WVAL(resp_param, 0);
                        ff_searchcount = WVAL(resp_param, 2);
                        ff_eos = WVAL(resp_param, 4);
                        ff_lastname = WVAL(resp_param, 8);
                } else
                {
                        ff_searchcount = WVAL(resp_param, 0);
                        ff_eos = WVAL(resp_param, 2);
                        ff_lastname = WVAL(resp_param, 6);
                }
 
                if (ff_searchcount == 0)
                {
                        break;
                }
                /* point to the data bytes */
                p = resp_data;
 
                /* we might need the lastname for continuations */
                lastname = "";
                lastname_len = 0;
                if (ff_lastname > 0)
                {
                        switch (info_level)
                        {
                        case 260:
                                lastname = p + ff_lastname;
                                lastname_len = resp_data_len - ff_lastname;
                                ff_resume_key = 0;
                                break;
                        case 1:
                                lastname = p + ff_lastname + 1;
                                lastname_len = BVAL(p, ff_lastname);
                                ff_resume_key = 0;
                                break;
                        }
                }
                lastname_len = min(lastname_len, 256);
                strncpy(mask, lastname, lastname_len);
                mask[lastname_len] = '\0';
 
                /* Now we are ready to parse smb directory entries. */
 
                for (i = 0; i < ff_searchcount; i++)
                {
                        struct smb_dirent *entry = &(cache[entries]);
 
                        p = smb_decode_long_dirent(server, p,
                                                   entry, info_level);
 
                        DDPRINTK("smb_readdir_long: got %s\n", entry->name);
 
                        if ((entry->name[0] == '.')
                            && ((entry->name[1] == '\0')
                                || ((entry->name[1] == '.')
                                    && (entry->name[2] == '\0'))))
                        {
                                /* ignore . and .. from the server */
                                continue;
                        }
                        if (entries_seen >= fpos)
                        {
                                entry->f_pos = entries_seen;
                                entries += 1;
                        }
                        if (entries >= cache_size)
                        {
                                goto finished;
                        }
                        entries_seen += 1;
                }
 
                DPRINTK("received %d entries (eos=%d resume=%d)\n",
                        ff_searchcount, ff_eos, ff_resume_key);
 
                first = 0;
        }
 
      finished:
        smb_unlock_server(server);
        return entries;
}
 
int
smb_proc_readdir(struct smb_server *server, struct inode *dir, int fpos,
                 int cache_size, struct smb_dirent *entry)
{
        if (server->protocol >= PROTOCOL_LANMAN2)
                return smb_proc_readdir_long(server, dir, fpos, cache_size,
                                             entry);
        else
                return smb_proc_readdir_short(server, dir, fpos, cache_size,
                                              entry);
}
 
/*
 * This version uses the core protocol to get the attribute info.
 * It works OK with Win 3.11, 95 and NT 3.51, but NOT with NT 4 (bad mtime).
 */
static int
smb_proc_getattr_core(struct inode *dir, const char *name, int len,
                      struct smb_dirent *entry)
{
        int result;
        char *p;
        struct smb_server *server = SMB_SERVER(dir);
        char *buf;
 
        smb_lock_server(server);
 
        DDPRINTK("smb_proc_getattr_core: %s\n", name);
 
      retry:
        buf = server->packet;
        p = smb_setup_header(server, SMBgetatr, 0, 0);
        *p++ = 4;
        p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
        smb_setup_bcc(server, p);
 
        if ((result = smb_request_ok(server, SMBgetatr, 10, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
                smb_unlock_server(server);
                return result;
        }
        /* N.B. Packet may change after request */
        buf = server->packet;
        entry->attr = WVAL(buf, smb_vwv0);
        entry->f_ctime = entry->f_atime =
            entry->f_mtime = local2utc(DVAL(buf, smb_vwv1));
 
        DDPRINTK("smb_proc_getattr_core: mtime=%ld\n", entry->f_mtime);
 
        entry->f_size = DVAL(buf, smb_vwv3);
        smb_unlock_server(server);
        return 0;
}
 
/*
 * This version uses the trans2 findfirst to get the attribute info.
 * It works fine with NT 3.51 and NT 4 (any SP), but not with Win95 (ERRerror).
 */
static int
smb_proc_getattr_ff(struct inode *dir, const char *name, int len,
                    struct smb_dirent *entry)
{
        unsigned char *resp_data = NULL;
        unsigned char *resp_param = NULL;
        int resp_data_len = 0;
        int resp_param_len = 0;
 
        char param[SMB_MAXPATHLEN + 1 + 12];
        int mask_len;
        unsigned char *mask = &(param[12]);
 
        int result;
        char *p;
        struct smb_server *server = SMB_SERVER(dir);
 
        mask_len = smb_encode_path(server, mask,
                                   SMB_INOP(dir), name, len) - mask;
 
        mask[mask_len] = 0;
 
        DDPRINTK("smb_proc_getattr_ff: mask=%s\n", mask);
 
        smb_lock_server(server);
 
      retry:
 
        WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
        WSET(param, 2, 1);      /* max count */
        WSET(param, 4, 2 + 1);  /* close on end + close after this call */
        WSET(param, 6, 1);      /* info level */
        DSET(param, 8, 0);
 
        result = smb_trans2_request(server, TRANSACT2_FINDFIRST,
                                    0, NULL, 12 + mask_len + 1, param,
                                    &resp_data_len, &resp_data,
                                    &resp_param_len, &resp_param);
 
        if (result < 0)
        {
                if (smb_retry(server))
                {
                        DPRINTK("smb_proc_getattr_ff: error=%d, retrying\n",
                                 result);
                        goto retry;
                }
                goto out;
        }
        if (server->rcls != 0)
        {
                result = -smb_errno(server->rcls, server->err);
                if (result != -ENOENT)
                        DPRINTK("smb_proc_getattr_ff: rcls=%d, err=%d\n",
                                 server->rcls, server->err);
                goto out;
        }
        /* Make sure we got enough data ... */
        result = -EINVAL;      /* WVAL(resp_param, 2) is ff_searchcount */
        if (resp_data_len < 22 || WVAL(resp_param, 2) != 1)
        {
                DPRINTK("smb_proc_getattr_ff: bad result, len=%d, count=%d\n",
                         resp_data_len, WVAL(resp_param, 2));
                goto out;
        }
        /* Decode the response (info level 1, as in smb_decode_long_dirent) */
        p = resp_data;
        entry->f_ctime = date_dos2unix(WVAL(p, 2), WVAL(p, 0));
        entry->f_atime = date_dos2unix(WVAL(p, 6), WVAL(p, 4));
        entry->f_mtime = date_dos2unix(WVAL(p, 10), WVAL(p, 8));
        entry->f_size = DVAL(p, 12);
        entry->attr = WVAL(p, 20);
 
        DDPRINTK("smb_proc_getattr_ff: attr=%x\n", entry->attr);
 
        result = 0;
 
out:
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_getattr(struct inode *dir, const char *name, int len,
                 struct smb_dirent *entry)
{
        struct smb_server *server = SMB_SERVER(dir);
        int result;
 
        smb_init_dirent(server, entry);
 
        /* Use trans2 for NT, use core protocol for others (Win95/3.11/...).
         * We distinguish NT from Win95 by looking at the capabilities,
         * in the same way as in Samba 1.9.18p2's reply.c.
         */
        if ((server->protocol >= PROTOCOL_LANMAN2)
            && (server->blkmode & (CAP_NT_SMBS | CAP_STATUS32)))
                result = smb_proc_getattr_ff(dir, name, len, entry);
        else
                result = smb_proc_getattr_core(dir, name, len, entry);
 
        smb_finish_dirent(server, entry);
 
        entry->len = len;
        memcpy(entry->name, name, len);
        /* entry->name is null terminated from smb_init_dirent */
 
        return result;
}
 
int
smb_proc_setattr(struct smb_server *server,
                 struct inode *i, struct smb_dirent *new_finfo)
{
        char *p;
        char *buf;
        int result;
 
        smb_lock_server(server);
 
      retry:
        buf = server->packet;
        p = smb_setup_header(server, SMBsetatr, 8, 0);
        WSET(buf, smb_vwv0, new_finfo->attr);
        DSET(buf, smb_vwv1, 0);
        DSET(buf, smb_vwv3, 0);
        DSET(buf, smb_vwv5, 0);
        WSET(buf, smb_vwv7, 0);
        *p++ = 4;
        p = smb_encode_path(server, p,
                            SMB_INOP(i)->dir, SMB_INOP(i)->finfo.name,
                            SMB_INOP(i)->finfo.len);
 
        smb_setup_bcc(server, p);
        if ((result = smb_request_ok(server, SMBsetatr, 0, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_dskattr(struct super_block *super, struct smb_dskattr *attr)
{
        int error;
        char *p;
        struct smb_server *server = &(SMB_SBP(super)->s_server);
 
        smb_lock_server(server);
 
      retry:
        smb_setup_header(server, SMBdskattr, 0, 0);
 
        if ((error = smb_request_ok(server, SMBdskattr, 5, 0)) < 0)
        {
                if (smb_retry(server))
                {
                        goto retry;
                }
                smb_unlock_server(server);
                return error;
        }
        p = SMB_VWV(server->packet);
        p = smb_decode_word(p, &attr->total);
        p = smb_decode_word(p, &attr->allocblocks);
        p = smb_decode_word(p, &attr->blocksize);
        p = smb_decode_word(p, &attr->free);
        smb_unlock_server(server);
        return 0;
}
 
/*****************************************************************************/
/*                                                                           */
/*  Mount/umount operations.                                                 */
/*                                                                           */
/*****************************************************************************/
 
struct smb_prots
{
        enum smb_protocol prot;
        const char *name;
};
 
/* smb_proc_reconnect: We expect the server to be locked, so that you
   can call the routine from within smb_retry. The socket must be
   created, like after a user-level socket()-call. It may not be
   connected. */
 
int
smb_proc_reconnect(struct smb_server *server)
{
        struct smb_prots prots[] =
        {
                {PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"},
                {PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"},
#ifdef LANMAN1
                {PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"},
                {PROTOCOL_LANMAN1, "LANMAN1.0"},
#endif
#ifdef LANMAN2
                {PROTOCOL_LANMAN2, "LM1.2X002"},
#endif
#ifdef NT1
                {PROTOCOL_NT1, "NT LM 0.12"},
                {PROTOCOL_NT1, "NT LANMAN 1.0"},
#endif
                {-1, NULL}};
        char dev[] = "A:";
        int i, plength;
        int max_xmit = 1024;    /* Space needed for first request. */
        int given_max_xmit = server->m.max_xmit;
        int result;
        byte *p;
 
        if ((result = smb_connect(server)) < 0)
        {
                DPRINTK("smb_proc_reconnect: could not smb_connect\n");
                goto fail;
        }
        /* Here we assume that the connection is valid */
        server->state = CONN_VALID;
 
        if (server->packet != NULL)
        {
                smb_vfree(server->packet);
                server->packet = NULL;
                server->packet_size = 0;
        }
        server->packet = smb_vmalloc(max_xmit);
 
        if (server->packet == NULL)
        {
                printk("smb_proc_connect: No memory! Bailing out.\n");
                result = -ENOMEM;
                goto fail;
        }
        server->packet_size = server->max_xmit = max_xmit;
 
        /*
         * Start with an RFC1002 session request packet.
         */
        p = server->packet + 4;
 
        p = smb_name_mangle(p, server->m.server_name);
        p = smb_name_mangle(p, server->m.client_name);
 
        smb_encode_smb_length(server->packet,
                              (void *) p - (void *) (server->packet));
 
        server->packet[0] = 0x81;        /* SESSION REQUEST */
 
        if (smb_catch_keepalive(server) < 0)
        {
                printk("smb_proc_connect: could not catch_keepalives\n");
        }
        if ((result = smb_request(server)) < 0)
        {
                DPRINTK("smb_proc_connect: Failed to send SESSION REQUEST.\n");
                smb_dont_catch_keepalive(server);
                goto fail;
        }
        if (server->packet[0] != 0x82)
        {
                printk("smb_proc_connect: Did not receive positive response "
                       "(err = %x)\n",
                       server->packet[0]);
                smb_dont_catch_keepalive(server);
                result = -EIO;
                goto fail;
        }
        DPRINTK("smb_proc_connect: Passed SESSION REQUEST.\n");
 
        /* Now we are ready to send a SMB Negotiate Protocol packet. */
        memset(server->packet, 0, SMB_HEADER_LEN);
 
        plength = 0;
        for (i = 0; prots[i].name != NULL; i++)
        {
                plength += strlen(prots[i].name) + 2;
        }
 
        smb_setup_header(server, SMBnegprot, 0, plength);
 
        p = SMB_BUF(server->packet);
 
        for (i = 0; prots[i].name != NULL; i++)
        {
                *p++ = 2;
                strcpy(p, prots[i].name);
                p += strlen(prots[i].name) + 1;
        }
 
        if ((result = smb_request_ok(server, SMBnegprot, 1, -1)) < 0)
        {
                DPRINTK("smb_proc_connect: Failure requesting SMBnegprot\n");
                smb_dont_catch_keepalive(server);
                goto fail;
        } else
        {
                DDPRINTK("smb_proc_connect: Request SMBnegprot..");
        }
 
        DDPRINTK("Verified!\n");
 
        p = SMB_VWV(server->packet);
        p = smb_decode_word(p, (word *) & i);
#ifdef CONFIG_COLDFIRE
        /*
         *      Not quite sure why this is needed???
         *      Maybe the byte swapping code is broken, but the result
         *      byte is certainly in the wrong position within the word.
         */
        i = i >> 16;
#endif
        server->protocol = prots[i].prot;
 
        DPRINTK("smb_proc_connect: Server wants %s protocol.\n",
                prots[i].name);
 
        if (server->protocol >= PROTOCOL_LANMAN1)
        {
 
                word passlen = strlen(server->m.password);
                word userlen = strlen(server->m.username);
 
#ifdef DEBUG_SMB_PASSWORD
                DPRINTK("smb_proc_connect: password = %s\n",
                        server->m.password);
#endif                  
                DPRINTK("smb_proc_connect: usernam = %s\n",
                        server->m.username);
 
                if (server->protocol >= PROTOCOL_NT1)
                {
                        server->max_xmit = DVAL(server->packet, smb_vwv3 + 1);
                        server->maxmux = WVAL(server->packet, smb_vwv1 + 1);
                        server->maxvcs = WVAL(server->packet, smb_vwv2 + 1);
                        server->blkmode = DVAL(server->packet, smb_vwv9 + 1);
                        server->sesskey = DVAL(server->packet, smb_vwv7 + 1);
                } else
                {
                        server->max_xmit = WVAL(server->packet, smb_vwv2);
                        server->maxmux = WVAL(server->packet, smb_vwv3);
                        server->maxvcs = WVAL(server->packet, smb_vwv4);
                        server->blkmode = WVAL(server->packet, smb_vwv5);
                        server->sesskey = DVAL(server->packet, smb_vwv6);
                }
                DPRINTK("smb_proc_connect: blkmode (capabilities) = %x\n",
                        server->blkmode);
 
                if (server->max_xmit < given_max_xmit)
                {
                        /* We do not distinguish between the client
                           requests and the server response. */
                        given_max_xmit = server->max_xmit;
                }
                if (server->protocol >= PROTOCOL_NT1)
                {
                        char *workgroup = server->m.domain;
                        char *OS_id = "Unix";
                        char *client_id = "ksmbfs";
 
                        smb_setup_header(server, SMBsesssetupX, 13,
                                         5 + userlen + passlen +
                                         strlen(workgroup) + strlen(OS_id) +
                                         strlen(client_id));
 
                        WSET(server->packet, smb_vwv0, 0x00ff);
                        WSET(server->packet, smb_vwv1, 0);
                        WSET(server->packet, smb_vwv2, given_max_xmit);
                        WSET(server->packet, smb_vwv3, 2);
                        WSET(server->packet, smb_vwv4, server->pid);
                        DSET(server->packet, smb_vwv5, server->sesskey);
                        WSET(server->packet, smb_vwv7, passlen + 1);
                        WSET(server->packet, smb_vwv8, 0);
                        WSET(server->packet, smb_vwv9, 0);
 
                        p = SMB_BUF(server->packet);
                        strcpy(p, server->m.password);
                        p += passlen + 1;
                        strcpy(p, server->m.username);
                        p += userlen + 1;
                        strcpy(p, workgroup);
                        p += strlen(p) + 1;
                        strcpy(p, OS_id);
                        p += strlen(p) + 1;
                        strcpy(p, client_id);
                } else
                {
                        smb_setup_header(server, SMBsesssetupX, 10,
                                         2 + userlen + passlen);
 
                        WSET(server->packet, smb_vwv0, 0x00ff);
                        WSET(server->packet, smb_vwv1, 0);
                        WSET(server->packet, smb_vwv2, given_max_xmit);
                        WSET(server->packet, smb_vwv3, 2);
                        WSET(server->packet, smb_vwv4, server->pid);
                        DSET(server->packet, smb_vwv5, server->sesskey);
                        WSET(server->packet, smb_vwv7, passlen + 1);
                        WSET(server->packet, smb_vwv8, 0);
                        WSET(server->packet, smb_vwv9, 0);
 
                        p = SMB_BUF(server->packet);
                        strcpy(p, server->m.password);
                        p += passlen + 1;
                        strcpy(p, server->m.username);
                }
 
                if ((result = smb_request_ok(server, SMBsesssetupX, 3, 0)) < 0)
                {
                        DPRINTK("smb_proc_connect: SMBsessetupX failed\n");
                        smb_dont_catch_keepalive(server);
                        goto fail;
                }
                smb_decode_word(server->packet + 32, &(server->server_uid));
        } else
        {
                server->max_xmit = 0;
                server->maxmux = 0;
                server->maxvcs = 0;
                server->blkmode = 0;
                server->sesskey = 0;
        }
 
        /* Fine! We have a connection, send a tcon message. */
 
        smb_setup_header(server, SMBtcon, 0,
                         6 + strlen(server->m.service) +
                         strlen(server->m.password) + strlen(dev));
 
        p = SMB_BUF(server->packet);
        p = smb_encode_ascii(p, server->m.service, strlen(server->m.service));
        p = smb_encode_ascii(p, server->m.password, strlen(server->m.password));
        p = smb_encode_ascii(p, dev, strlen(dev));
 
        if ((result = smb_request_ok(server, SMBtcon, 2, 0)) < 0)
        {
                DPRINTK("smb_proc_connect: SMBtcon not verified.\n");
                smb_dont_catch_keepalive(server);
                goto fail;
        }
        DDPRINTK("OK! Managed to set up SMBtcon!\n");
 
        p = SMB_VWV(server->packet);
 
        if (server->protocol <= PROTOCOL_COREPLUS)
        {
                word max_xmit;
 
                p = smb_decode_word(p, &max_xmit);
                server->max_xmit = max_xmit;
 
                if (server->max_xmit > given_max_xmit)
                {
                        server->max_xmit = given_max_xmit;
                }
        } else
        {
                p += 2;
        }
 
        p = smb_decode_word(p, &server->tid);
 
        /* Ok, everything is fine. max_xmit does not include */
        /* the TCP-SMB header of 4 bytes. */
        server->max_xmit += 4;
 
        DPRINTK("max_xmit = %d, tid = %d\n", server->max_xmit, server->tid);
 
        /* Now make a new packet with the correct size. */
        smb_vfree(server->packet);
        server->packet = NULL;
 
        server->packet = smb_vmalloc(server->max_xmit);
        if (server->packet == NULL)
        {
                printk("smb_proc_connect: No memory left in end of "
                       "connection phase :-(\n");
                smb_dont_catch_keepalive(server);
                goto fail;
        }
        server->packet_size = server->max_xmit;
 
        DPRINTK("smb_proc_connect: Normal exit\n");
        return 0;
 
      fail:
        server->state = CONN_INVALID;
        return result;
}
 
/* smb_proc_reconnect: server->packet is allocated with
   server->max_xmit bytes if and only if we return >= 0 */
int
smb_proc_connect(struct smb_server *server)
{
        int result;
        smb_lock_server(server);
 
        result = smb_proc_reconnect(server);
 
        if ((result < 0) && (server->packet != NULL))
        {
                smb_vfree(server->packet);
                server->packet = NULL;
        }
        smb_unlock_server(server);
        return result;
}
 
int
smb_proc_disconnect(struct smb_server *server)
{
        smb_setup_header_exclusive(server, SMBtdis, 0, 0);
        return smb_request_ok_unlock(server, SMBtdis, 0, 0);
}
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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [smbfs/] [proc.c] - Blame information for rev 1782

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* proc.c`
3			`*`
4			`* Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke`
5			`*`
6			`* 28/06/96 - Fixed long file name support (smb_proc_readdir_long) by Yuri Per`
7			`*/`
8
9			`#include <linux/config.h>`
10			`#include <linux/fs.h>`
11			`#include <linux/smbno.h>`
12			`#include <linux/smb_fs.h>`
13			`#include <linux/types.h>`
14			`#include <linux/errno.h>`
15			`#include <linux/malloc.h>`
16			`#include <linux/stat.h>`
17			`#include <linux/fcntl.h>`
18			`#include <asm/segment.h>`
19			`#include <asm/string.h>`
20
21			`#define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)`
22			`#define SMB_CMD(packet) (BVAL(packet,8))`
23			`#define SMB_WCT(packet) (BVAL(packet, SMB_HEADER_LEN - 1))`
24			`#define SMB_BCC(packet) smb_bcc(packet)`
25			`#define SMB_BUF(packet) ((packet) + SMB_HEADER_LEN + SMB_WCT(packet) * 2 + 2)`
26
27			`#define SMB_DIRINFO_SIZE 43`
28			`#define SMB_STATUS_SIZE 21`
29
30			`static int smb_request_ok(struct smb_server *s, int command, int wct, int bcc);`
31
32			`static inline int`
33			`min(int a, int b)`
34			`{`
35			`return a < b ? a : b;`
36			`}`
37
38			`static void`
39			`str_upper(char *name)`
40			`{`