diff options
Diffstat (limited to 'fs/cifs/file.c')
-rw-r--r-- | fs/cifs/file.c | 58 |
1 files changed, 4 insertions, 54 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index b6c303f6373f..5ecda554f913 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c | |||
@@ -1183,16 +1183,11 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data, | |||
1183 | char *smb_read_data; | 1183 | char *smb_read_data; |
1184 | char __user *current_offset; | 1184 | char __user *current_offset; |
1185 | struct smb_com_read_rsp *pSMBr; | 1185 | struct smb_com_read_rsp *pSMBr; |
1186 | int use_old_read = FALSE; | ||
1187 | 1186 | ||
1188 | xid = GetXid(); | 1187 | xid = GetXid(); |
1189 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); | 1188 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
1190 | pTcon = cifs_sb->tcon; | 1189 | pTcon = cifs_sb->tcon; |
1191 | 1190 | ||
1192 | if(pTcon->ses) | ||
1193 | if((pTcon->ses->capabilities & CAP_LARGE_FILES) == 0) | ||
1194 | use_old_read = TRUE; | ||
1195 | |||
1196 | if (file->private_data == NULL) { | 1191 | if (file->private_data == NULL) { |
1197 | FreeXid(xid); | 1192 | FreeXid(xid); |
1198 | return -EBADF; | 1193 | return -EBADF; |
@@ -1217,22 +1212,10 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data, | |||
1217 | if (rc != 0) | 1212 | if (rc != 0) |
1218 | break; | 1213 | break; |
1219 | } | 1214 | } |
1220 | if(use_old_read) | 1215 | rc = CIFSSMBRead(xid, pTcon, |
1221 | rc = SMBLegacyRead(xid, pTcon, | ||
1222 | open_file->netfid, | ||
1223 | current_read_size, *poffset, | ||
1224 | &bytes_read, &smb_read_data); | ||
1225 | else { | ||
1226 | rc = CIFSSMBRead(xid, pTcon, | ||
1227 | open_file->netfid, | 1216 | open_file->netfid, |
1228 | current_read_size, *poffset, | 1217 | current_read_size, *poffset, |
1229 | &bytes_read, &smb_read_data); | 1218 | &bytes_read, &smb_read_data); |
1230 | if(rc == -EINVAL) { | ||
1231 | use_old_read = TRUE; | ||
1232 | rc = -EAGAIN; | ||
1233 | continue; | ||
1234 | } | ||
1235 | } | ||
1236 | pSMBr = (struct smb_com_read_rsp *)smb_read_data; | 1219 | pSMBr = (struct smb_com_read_rsp *)smb_read_data; |
1237 | if (copy_to_user(current_offset, | 1220 | if (copy_to_user(current_offset, |
1238 | smb_read_data + 4 /* RFC1001 hdr */ | 1221 | smb_read_data + 4 /* RFC1001 hdr */ |
@@ -1276,7 +1259,6 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, | |||
1276 | int xid; | 1259 | int xid; |
1277 | char *current_offset; | 1260 | char *current_offset; |
1278 | struct cifsFileInfo *open_file; | 1261 | struct cifsFileInfo *open_file; |
1279 | int use_old_read = FALSE; | ||
1280 | 1262 | ||
1281 | xid = GetXid(); | 1263 | xid = GetXid(); |
1282 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); | 1264 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
@@ -1287,9 +1269,6 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, | |||
1287 | return -EBADF; | 1269 | return -EBADF; |
1288 | } | 1270 | } |
1289 | open_file = (struct cifsFileInfo *)file->private_data; | 1271 | open_file = (struct cifsFileInfo *)file->private_data; |
1290 | if(pTcon->ses) | ||
1291 | if((pTcon->ses->capabilities & CAP_LARGE_FILES) == 0) | ||
1292 | use_old_read = TRUE; | ||
1293 | 1272 | ||
1294 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) | 1273 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) |
1295 | cFYI(1, ("attempting read on write only file instance")); | 1274 | cFYI(1, ("attempting read on write only file instance")); |
@@ -1308,24 +1287,10 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size, | |||
1308 | if (rc != 0) | 1287 | if (rc != 0) |
1309 | break; | 1288 | break; |
1310 | } | 1289 | } |
1311 | if(use_old_read) | 1290 | rc = CIFSSMBRead(xid, pTcon, |
1312 | rc = SMBLegacyRead(xid, pTcon, | ||
1313 | open_file->netfid, | ||
1314 | current_read_size, *poffset, | ||
1315 | &bytes_read, ¤t_offset); | ||
1316 | else { | ||
1317 | rc = CIFSSMBRead(xid, pTcon, | ||
1318 | open_file->netfid, | 1291 | open_file->netfid, |
1319 | current_read_size, *poffset, | 1292 | current_read_size, *poffset, |
1320 | &bytes_read, ¤t_offset); | 1293 | &bytes_read, ¤t_offset); |
1321 | /* check if server disavows support for | ||
1322 | 64 bit offsets */ | ||
1323 | if(rc == -EINVAL) { | ||
1324 | rc = -EAGAIN; | ||
1325 | use_old_read = TRUE; | ||
1326 | continue; | ||
1327 | } | ||
1328 | } | ||
1329 | } | 1294 | } |
1330 | if (rc || (bytes_read == 0)) { | 1295 | if (rc || (bytes_read == 0)) { |
1331 | if (total_read) { | 1296 | if (total_read) { |
@@ -1423,7 +1388,6 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, | |||
1423 | struct smb_com_read_rsp *pSMBr; | 1388 | struct smb_com_read_rsp *pSMBr; |
1424 | struct pagevec lru_pvec; | 1389 | struct pagevec lru_pvec; |
1425 | struct cifsFileInfo *open_file; | 1390 | struct cifsFileInfo *open_file; |
1426 | int use_old_read = FALSE; | ||
1427 | 1391 | ||
1428 | xid = GetXid(); | 1392 | xid = GetXid(); |
1429 | if (file->private_data == NULL) { | 1393 | if (file->private_data == NULL) { |
@@ -1433,9 +1397,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, | |||
1433 | open_file = (struct cifsFileInfo *)file->private_data; | 1397 | open_file = (struct cifsFileInfo *)file->private_data; |
1434 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); | 1398 | cifs_sb = CIFS_SB(file->f_dentry->d_sb); |
1435 | pTcon = cifs_sb->tcon; | 1399 | pTcon = cifs_sb->tcon; |
1436 | if(pTcon->ses) | 1400 | |
1437 | if((pTcon->ses->capabilities & CAP_LARGE_FILES) == 0) | ||
1438 | use_old_read = TRUE; | ||
1439 | pagevec_init(&lru_pvec, 0); | 1401 | pagevec_init(&lru_pvec, 0); |
1440 | 1402 | ||
1441 | for (i = 0; i < num_pages; ) { | 1403 | for (i = 0; i < num_pages; ) { |
@@ -1481,22 +1443,10 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, | |||
1481 | break; | 1443 | break; |
1482 | } | 1444 | } |
1483 | 1445 | ||
1484 | if(use_old_read) | 1446 | rc = CIFSSMBRead(xid, pTcon, |
1485 | rc = SMBLegacyRead(xid, pTcon, | ||
1486 | open_file->netfid, | ||
1487 | read_size, offset, | ||
1488 | &bytes_read, &smb_read_data); | ||
1489 | else { | ||
1490 | rc = CIFSSMBRead(xid, pTcon, | ||
1491 | open_file->netfid, | 1447 | open_file->netfid, |
1492 | read_size, offset, | 1448 | read_size, offset, |
1493 | &bytes_read, &smb_read_data); | 1449 | &bytes_read, &smb_read_data); |
1494 | if(rc == -EINVAL) { | ||
1495 | use_old_read = TRUE; | ||
1496 | rc = -EAGAIN; | ||
1497 | continue; | ||
1498 | } | ||
1499 | } | ||
1500 | 1450 | ||
1501 | /* BB more RC checks ? */ | 1451 | /* BB more RC checks ? */ |
1502 | if (rc== -EAGAIN) { | 1452 | if (rc== -EAGAIN) { |