xen-project/xen
1
0 Fork 0
mirror of https://github.com/xen-project/xen.git synced 2026-10-28 02:01:24 +01:00
Code Issues Activity

libxl: introduce an option for disabling the non-O_DIRECT workaround

Browse Source 
Document and implement a new option that permits disk backends which
would otherwise have to avoid O_DIRECT (because of the network memory
lifetime bug) to use it anyway.  This is:
 direct-io-safe   in the xl domain disk config specification
 direct_io_safe   in the libxl disk API
 direct-io-safe   in the backend xenstore interface

Add a reference to xen/include/public/io/blkif.h in
docs/misc/vbd-interface.txt.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Tested-by: Felipe Franciosi <felipe@paradoxo.org>
This commit is contained in:
Stefano Stabellini authored and Ian Jackson committed 2014-05-02 17:50:27 +01:00
1 parent dc92f1a781
commit 6ec48cf41b
9 files changed
+402 -308
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

docs/misc/vbd-interface.txt
+6
View File
@@ -125,3 +125,9 @@ because they directly map the bottom 8 bits of the xenstore integer
directly to the Linux guest's device number and throw away the rest;
they can crash due to minor number clashes. With these guests, the
workaround is not to supply problematic combinations of devices.
Other frontend and backend options
----------------------------------
See xen/include/public/io/blkif.h for the full list of options.
docs/misc/xl-disk-configuration.txt
+38
View File
@@ -178,6 +178,44 @@ information to be interpreted by the executable program <script>,
These scripts are normally called "block-<script>".
direct-io-safe
--------------
Description: Disables non-O_DIRECT workaround
Supported values: absent, present
Mandatory: No
Default value: absent (workaround may be enabled)
There is a memory lifetime bug in some driver domain (dom0) kernels
which can cause crashes when using O_DIRECT. The bug occurs due to a
mismatch between the backend-visible lifetime of pages used for the
Xen PV network protocol and that expected by the backend kernel's
networking subsystem. This can cause crashes when using certain
backends with certain underlying storage.
See:
http://lists.xen.org/archives/html/xen-devel/2012-12/msg01154.html
For this reason, (this version of) the Xen libxl toolstack disables
O_DIRECT when using the qemu-based Xen PV backend ("qdisk").
However, this workaround has performance and scaling implications, and
it is only necessary if the underlying device is a network filesystem.
If the underlying device is not, then it is good to disable it; that
is what this option is for.
This option simply requests that the workaround be disabled. (However,
not all backends versions which use the workaround understand this
option, so this is on a best effort basis.)
It's important to note that if you are storing the VM disk on a
network filesystem or a network block device (NFS or ISCSI) it might
not be safe to use this option. Otherwise specifying it is safe and
can give better performances.
If in the future the bug is fixed properly this option will then be
silently ignored.
============================================
DEPRECATED PARAMETERS, PREFIXES AND SYNTAXES
tools/libxl/libxl.c
+4
View File
@@ -2205,6 +2205,10 @@ static void device_disk_add(libxl__egc *egc, uint32_t domid,
flexarray_append(back, disk->readwrite ? "w" : "r");
flexarray_append(back, "device-type");
flexarray_append(back, disk->is_cdrom ? "cdrom" : "disk");
if (disk->direct_io_safe) {
flexarray_append(back, "direct-io-safe");
flexarray_append(back, "1");
}
flexarray_append(front, "backend-id");
flexarray_append(front, libxl__sprintf(gc, "%d", disk->backend_domid));
tools/libxl/libxl.h
+7
View File
@@ -94,6 +94,13 @@
*/
#define LIBXL_HAVE_BUILDINFO_EVENT_CHANNELS 1
/*
* LIBXL_HAVE_DEVICE_DISK_DIRECT_IO_SAFE indicates that a
* 'direct_io_safe' field (of boolean type) is present in
* libxl_device_disk.
*/
#define LIBXL_HAVE_DEVICE_DISK_DIRECT_IO_SAFE 1
/*
* libxl ABI compatibility
*
tools/libxl/libxl_types.idl
+1
View File
@@ -416,6 +416,7 @@ libxl_device_disk = Struct("device_disk", [
("removable", integer),
("readwrite", integer),
("is_cdrom", integer),
("direct_io_safe", bool),
])
libxl_device_nic = Struct("device_nic", [
tools/libxl/libxlu_disk_l.c
+322 -307
View File
@@ -361,8 +361,8 @@ static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
*yy_cp = '\0'; \
yyg->yy_c_buf_p = yy_cp;
#define YY_NUM_RULES 26
#define YY_END_OF_BUFFER 27
#define YY_NUM_RULES 27
#define YY_END_OF_BUFFER 28
/* This struct is not used in this scanner,
but its presence is necessary. */
struct yy_trans_info
@@ -370,90 +370,92 @@ struct yy_trans_info
flex_int32_t yy_verify;
flex_int32_t yy_nxt;
};
static yyconst flex_int16_t yy_acclist[454] =
static yyconst flex_int16_t yy_acclist[470] =
{ 0,
25, 25, 27, 23, 24, 26, 8193, 23, 24, 26,
16385, 8193, 23, 26,16385, 23, 24, 26, 24, 26,
23, 24, 26, 23, 24, 26, 23, 24, 26, 23,
24, 26, 23, 24, 26, 23, 24, 26, 23, 24,
26, 23, 24, 26, 23, 24, 26, 23, 24, 26,
23, 24, 26, 23, 24, 26, 23, 24, 26, 23,
24, 26, 23, 24, 26, 25, 26, 26, 23, 23,
8193, 23, 8193, 23,16385, 8193, 23, 8193, 23, 23,
8214, 23,16406, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
26, 26, 28, 24, 25, 27, 8193, 24, 25, 27,
16385, 8193, 24, 27,16385, 24, 25, 27, 25, 27,
24, 25, 27, 24, 25, 27, 24, 25, 27, 24,
25, 27, 24, 25, 27, 24, 25, 27, 24, 25,
27, 24, 25, 27, 24, 25, 27, 24, 25, 27,
24, 25, 27, 24, 25, 27, 24, 25, 27, 24,
25, 27, 24, 25, 27, 26, 27, 27, 24, 24,
8193, 24, 8193, 24,16385, 8193, 24, 8193, 24, 24,
8215, 24,16407, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
23, 23, 25, 8193, 23, 8193, 23, 8193, 8214, 23,
8214, 23, 8214, 13, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
23, 23, 8214, 23, 8214, 23, 8214, 13, 23, 18,
8214, 23,16406, 23, 23, 23, 23, 23, 23, 23,
8207, 8214, 23,16399,16406, 21, 8214, 23,16406, 23,
8206, 8214, 23,16398,16406, 23, 23, 8209, 8214, 23,
16401,16406, 23, 23, 23, 23, 18, 8214, 23, 18,
8214, 23, 18, 23, 18, 8214, 23, 3, 23, 23,
20, 8214, 23,16406, 23, 23, 8207, 8214, 23, 8207,
24, 24, 24, 26, 8193, 24, 8193, 24, 8193, 8215,
24, 8215, 24, 8215, 14, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 8215, 24, 8215, 24, 8215, 14,
24, 19, 8215, 24,16407, 24, 24, 24, 24, 24,
24, 24, 24, 8208, 8215, 24,16400,16407, 22, 8215,
24,16407, 24, 8207, 8215, 24,16399,16407, 24, 24,
8210, 8215, 24,16402,16407, 24, 24, 24, 24, 19,
8215, 24, 19, 8215, 24, 19, 24, 19, 8215, 24,
3, 24, 24, 24, 21, 8215, 24,16407, 24, 24,
8214, 23, 8207, 23, 8207, 8214, 21, 8214, 23, 21,
8214, 23, 21, 23, 21, 8214, 8206, 8214, 23, 8206,
8214, 23, 8206, 23, 8206, 8214, 23, 8209, 8214, 23,
8209, 8214, 23, 8209, 23, 8209, 8214, 23, 23, 10,
23, 18, 8214, 23, 18, 8214, 23, 18, 8214, 18,
23, 18, 23, 3, 23, 23, 20, 8214, 23, 20,
8214, 23, 20, 23, 20, 8214, 23, 19, 8214, 23,
16406, 8207, 8214, 23, 8207, 8214, 23, 8207, 8214, 8207,
23, 8207, 21, 8214, 23, 21, 8214, 23, 21, 8214,
21, 23, 21, 8206, 8214, 23, 8206, 8214, 23, 8206,
8208, 8215, 24, 8208, 8215, 24, 8208, 24, 8208, 8215,
22, 8215, 24, 22, 8215, 24, 22, 24, 22, 8215,
8207, 8215, 24, 8207, 8215, 24, 8207, 24, 8207, 8215,
24, 8210, 8215, 24, 8210, 8215, 24, 8210, 24, 8210,
8215, 24, 24, 10, 24, 19, 8215, 24, 19, 8215,
24, 19, 8215, 19, 24, 19, 24, 3, 24, 24,
24, 21, 8215, 24, 21, 8215, 24, 21, 24, 21,
8215, 24, 20, 8215, 24,16407, 8208, 8215, 24, 8208,
8215, 24, 8208, 8215, 8208, 24, 8208, 22, 8215, 24,
22, 8215, 24, 22, 8215, 22, 24, 22, 8207, 8215,
8214, 8206, 23, 8206, 23, 8209, 8214, 23, 8209, 8214,
23, 8209, 8214, 8209, 23, 8209, 23, 23, 10, 13,
10, 7, 23, 23, 20, 8214, 23, 20, 8214, 23,
20, 8214, 20, 23, 20, 2, 19, 8214, 23, 19,
8214, 23, 19, 23, 19, 8214, 11, 23, 12, 10,
10, 13, 7, 13, 7, 8, 23, 6, 2, 13,
2, 19, 8214, 23, 19, 8214, 23, 19, 8214, 19,
23, 19, 11, 13, 11, 16, 8214, 23,16406, 12,
13, 12, 7, 7, 13, 8, 13, 8, 23, 6,
13, 6, 6, 13, 6, 13, 2, 2, 13, 11,
24, 8207, 8215, 24, 8207, 8215, 8207, 24, 8207, 24,
8210, 8215, 24, 8210, 8215, 24, 8210, 8215, 8210, 24,
8210, 24, 24, 10, 14, 10, 7, 24, 24, 24,
21, 8215, 24, 21, 8215, 24, 21, 8215, 21, 24,
21, 2, 20, 8215, 24, 20, 8215, 24, 20, 24,
20, 8215, 11, 24, 13, 10, 10, 14, 7, 14,
7, 8, 24, 6, 24, 2, 14, 2, 20, 8215,
24, 20, 8215, 24, 20, 8215, 20, 24, 20, 11,
14, 11, 17, 8215, 24,16407, 13, 14, 13, 7,
7, 14, 8, 14, 8, 24, 6, 14, 6, 6,
11, 13, 16, 8214, 23, 16, 8214, 23, 16, 23,
16, 8214, 12, 13, 8, 8, 13, 23, 6, 6,
13, 6, 6, 16, 8214, 23, 16, 8214, 23, 16,
8214, 16, 23, 16, 23, 6, 6, 9, 6, 5,
6, 9, 13, 9, 4, 6, 5, 6, 9, 9,
13, 4, 6
14, 6, 14, 24, 2, 2, 14, 11, 11, 14,
17, 8215, 24, 17, 8215, 24, 17, 24, 17, 8215,
13, 14, 8, 8, 14, 24, 6, 6, 14, 6,
6, 24, 17, 8215, 24, 17, 8215, 24, 17, 8215,
17, 24, 17, 24, 6, 6, 24, 9, 6, 5,
6, 24, 9, 14, 9, 4, 6, 5, 6, 24,
9, 9, 14, 4, 6, 12, 24, 12, 24
} ;
static yyconst flex_int16_t yy_accept[257] =
static yyconst flex_int16_t yy_accept[271] =
{ 0,
1, 1, 1, 2, 3, 4, 7, 12, 16, 19,
21, 24, 27, 30, 33, 36, 39, 42, 45, 48,
51, 54, 57, 60, 63, 66, 68, 69, 70, 71,
73, 76, 78, 79, 80, 81, 84, 84, 85, 86,
87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104, 106, 108,
109, 111, 113, 114, 115, 116, 117, 118, 119, 120,
97, 98, 99, 100, 101, 102, 103, 104, 105, 107,
109, 110, 112, 114, 115, 116, 117, 118, 119, 120,
121, 122, 123, 124, 125, 126, 127, 128, 129, 130,
131, 132, 133, 135, 137, 138, 139, 140, 144, 145,
146, 147, 148, 149, 150, 151, 156, 160, 161, 166,
131, 132, 133, 134, 135, 137, 139, 140, 141, 142,
146, 147, 148, 149, 150, 151, 152, 153, 154, 159,
167, 168, 173, 174, 175, 176, 177, 180, 183, 185,
187, 188, 190, 191, 195, 196, 197, 200, 203, 205,
207, 210, 213, 215, 217, 220, 223, 225, 227, 228,
231, 234, 236, 238, 239, 240, 241, 242, 245, 248,
250, 252, 253, 254, 256, 257, 260, 263, 265, 267,
268, 272, 275, 278, 280, 282, 283, 286, 289, 291,
293, 294, 297, 300, 302, 304, 305, 306, 309, 312,
314, 316, 317, 318, 319, 321, 322, 323, 324, 325,
328, 331, 333, 335, 336, 337, 340, 343, 345, 347,
348, 349, 350, 351, 353, 355, 356, 357, 358, 359,
163, 164, 169, 170, 171, 176, 177, 178, 179, 180,
183, 186, 188, 190, 191, 193, 194, 195, 199, 200,
201, 204, 207, 209, 211, 214, 217, 219, 221, 224,
227, 229, 231, 232, 235, 238, 240, 242, 243, 244,
245, 246, 249, 252, 254, 256, 257, 258, 260, 261,
262, 265, 268, 270, 272, 273, 277, 280, 283, 285,
287, 288, 291, 294, 296, 298, 299, 302, 305, 307,
309, 310, 311, 314, 317, 319, 321, 322, 323, 324,
326, 327, 328, 329, 330, 331, 334, 337, 339, 341,
342, 343, 346, 349, 351, 353, 354, 355, 356, 357,
361, 362, 365, 368, 370, 372, 373, 375, 376, 380,
382, 383, 384, 386, 388, 389, 390, 392, 393, 395,
397, 398, 400, 401, 403, 406, 409, 411, 413, 415,
416, 418, 419, 420, 422, 423, 424, 427, 430, 432,
434, 435, 436, 437, 438, 439, 440, 442, 444, 445,
447, 449, 450, 452, 454, 454
359, 361, 362, 363, 364, 365, 366, 368, 369, 372,
375, 377, 379, 380, 382, 383, 387, 389, 390, 391,
393, 395, 396, 397, 399, 400, 402, 404, 405, 406,
408, 409, 411, 414, 417, 419, 421, 423, 424, 426,
427, 428, 430, 431, 432, 433, 436, 439, 441, 443,
444, 445, 446, 447, 448, 449, 450, 452, 453, 455,
456, 458, 460, 461, 462, 464, 466, 468, 470, 470
} ;
static yyconst flex_int32_t yy_ec[256] =
@@ -496,244 +498,252 @@ static yyconst flex_int32_t yy_meta[34] =
1, 1, 1
} ;
static yyconst flex_int16_t yy_base[315] =
static yyconst flex_int16_t yy_base[329] =
{ 0,
0, 0, 563, 559, 558, 546, 32, 35, 665, 665,
44, 62, 30, 41, 50, 51, 532, 64, 47, 66,
67, 524, 68, 516, 72, 0, 665, 514, 665, 87,
91, 0, 0, 100, 500, 109, 0, 74, 95, 87,
32, 96, 105, 110, 77, 97, 40, 113, 116, 112,
118, 120, 121, 122, 123, 125, 0, 137, 0, 0,
147, 0, 0, 494, 129, 126, 134, 143, 145, 147,
148, 149, 151, 153, 156, 160, 155, 167, 162, 175,
168, 159, 188, 0, 0, 665, 166, 197, 179, 185,
176, 200, 460, 186, 193, 216, 225, 205, 234, 221,
0, 0, 673, 657, 648, 616, 32, 35, 691, 691,
44, 62, 30, 41, 50, 51, 598, 64, 47, 66,
67, 586, 68, 582, 72, 0, 691, 584, 691, 87,
91, 0, 0, 100, 574, 109, 0, 74, 95, 87,
71, 96, 97, 105, 110, 112, 113, 40, 116, 119,
115, 120, 121, 124, 125, 127, 126, 0, 151, 0,
0, 153, 0, 0, 572, 128, 135, 139, 137, 136,
153, 156, 154, 148, 161, 162, 165, 166, 167, 170,
169, 178, 179, 171, 189, 0, 0, 691, 172, 202,
187, 174, 184, 202, 205, 558, 198, 206, 228, 237,
237, 247, 204, 230, 244, 213, 254, 0, 256, 0,
251, 258, 254, 279, 256, 259, 267, 0, 269, 0,
286, 0, 288, 0, 290, 0, 297, 0, 267, 299,
0, 301, 0, 288, 297, 459, 302, 310, 0, 0,
0, 0, 305, 665, 307, 319, 0, 321, 0, 322,
332, 335, 0, 0, 0, 0, 339, 0, 0, 0,
0, 342, 0, 0, 0, 0, 340, 349, 0, 0,
0, 0, 337, 345, 450, 665, 442, 350, 352, 360,
0, 0, 0, 0, 424, 362, 0, 364, 0, 420,
319, 371, 419, 665, 418, 665, 417, 276, 368, 416,
211, 246, 210, 215, 255, 216, 251, 234, 199, 263,
0, 265, 0, 252, 266, 261, 263, 292, 269, 270,
278, 0, 280, 0, 299, 0, 301, 0, 303, 0,
310, 0, 280, 312, 0, 314, 0, 301, 310, 556,
243, 321, 0, 0, 0, 0, 275, 691, 312, 322,
331, 0, 333, 0, 334, 344, 347, 0, 0, 0,
0, 351, 0, 0, 0, 0, 354, 0, 0, 0,
0, 352, 361, 0, 0, 0, 0, 318, 357, 548,
691, 540, 359, 362, 388, 370, 0, 0, 0, 0,
532, 372, 0, 374, 0, 520, 323, 381, 492, 691,
665, 373, 0, 0, 0, 0, 415, 665, 382, 414,
0, 413, 665, 412, 665, 368, 411, 665, 384, 352,
410, 665, 409, 665, 391, 0, 395, 0, 0, 405,
665, 382, 316, 665, 385, 397, 399, 0, 0, 0,
0, 396, 403, 406, 271, 407, 228, 200, 665, 175,
665, 77, 665, 665, 665, 429, 433, 436, 440, 444,
448, 452, 456, 460, 464, 468, 472, 476, 480, 484,
488, 492, 496, 500, 504, 508, 512, 516, 520, 524,
528, 532, 536, 540, 544, 548, 552, 556, 560, 564,
568, 572, 576, 580, 584, 588, 592, 596, 600, 604,
485, 691, 476, 349, 382, 369, 468, 691, 395, 0,
0, 0, 0, 449, 691, 406, 448, 0, 447, 691,
446, 691, 391, 444, 691, 399, 273, 395, 442, 691,
438, 691, 414, 0, 416, 0, 0, 398, 691, 412,
376, 691, 401, 417, 406, 426, 0, 0, 0, 0,
422, 423, 429, 426, 337, 433, 295, 423, 218, 691,
83, 691, 425, 38, 691, 691, 436, 691, 691, 455,
459, 462, 466, 470, 474, 478, 482, 486, 490, 494,
498, 502, 506, 510, 514, 518, 522, 526, 530, 534,
538, 542, 546, 550, 554, 558, 562, 566, 570, 574,
608, 612, 616, 620, 624, 628, 632, 636, 640, 644,
648, 652, 656, 660
578, 582, 586, 590, 594, 598, 602, 606, 610, 614,
618, 622, 626, 630, 634, 638, 642, 646, 650, 654,
658, 662, 666, 670, 674, 678, 682, 686
} ;
static yyconst flex_int16_t yy_def[315] =
static yyconst flex_int16_t yy_def[329] =
{ 0,
255, 1, 256, 256, 255, 257, 258, 258, 255, 255,
259, 259, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 260, 255, 257, 255, 261,
258, 262, 262, 263, 12, 257, 264, 12, 12, 12,
269, 1, 270, 270, 269, 271, 272, 272, 269, 269,
273, 273, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 274, 269, 271, 269, 275,
272, 276, 276, 277, 12, 271, 278, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 260, 261, 262, 262,
265, 266, 266, 255, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 274, 275, 276,
276, 279, 280, 280, 269, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 265, 266, 266, 255, 12, 267, 12, 12,
12, 12, 12, 12, 12, 268, 269, 12, 270, 12,
12, 12, 12, 12, 279, 280, 280, 269, 12, 281,
12, 12, 12, 12, 12, 12, 12, 12, 282, 283,
12, 271, 12, 12, 12, 12, 272, 273, 267, 273,
12, 12, 12, 274, 12, 12, 275, 276, 268, 276,
277, 278, 269, 278, 279, 280, 270, 280, 12, 281,
282, 271, 282, 12, 12, 283, 12, 272, 273, 273,
284, 284, 12, 255, 12, 285, 286, 274, 286, 12,
287, 275, 276, 276, 288, 288, 277, 278, 278, 289,
289, 279, 280, 280, 290, 290, 12, 281, 282, 282,
291, 291, 12, 12, 292, 255, 293, 12, 12, 285,
286, 286, 294, 294, 295, 296, 297, 287, 297, 298,
12, 299, 292, 255, 300, 255, 301, 12, 302, 303,
12, 284, 12, 12, 285, 12, 12, 12, 12, 286,
287, 281, 287, 12, 12, 12, 12, 288, 12, 12,
289, 290, 282, 290, 291, 292, 283, 292, 293, 294,
284, 294, 12, 295, 296, 285, 296, 12, 12, 297,
12, 286, 287, 287, 298, 298, 12, 269, 12, 12,
299, 300, 288, 300, 12, 301, 289, 290, 290, 302,
302, 291, 292, 292, 303, 303, 293, 294, 294, 304,
304, 12, 295, 296, 296, 305, 305, 12, 12, 306,
269, 307, 12, 12, 277, 299, 300, 300, 308, 308,
309, 310, 311, 301, 311, 312, 12, 313, 306, 269,
255, 296, 297, 297, 304, 304, 305, 255, 306, 307,
307, 300, 255, 308, 255, 12, 309, 255, 309, 309,
303, 255, 305, 255, 310, 311, 306, 311, 307, 308,
255, 12, 309, 255, 309, 309, 310, 311, 311, 312,
312, 12, 309, 309, 313, 309, 309, 314, 255, 309,
255, 314, 255, 255, 0, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
314, 269, 315, 12, 316, 185, 317, 269, 310, 311,
311, 318, 318, 319, 269, 320, 321, 321, 314, 269,
322, 269, 12, 323, 269, 323, 323, 185, 317, 269,
319, 269, 324, 325, 320, 325, 321, 322, 269, 12,
323, 269, 323, 323, 185, 324, 325, 325, 326, 326,
12, 323, 323, 185, 327, 323, 323, 185, 328, 269,
323, 269, 185, 328, 269, 269, 185, 269, 0, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269
} ;
static yyconst flex_int16_t yy_nxt[699] =
static yyconst flex_int16_t yy_nxt[725] =
{ 0,
6, 7, 8, 9, 6, 6, 6, 6, 10, 11,
12, 13, 14, 15, 16, 17, 17, 18, 17, 17,
17, 17, 19, 17, 20, 21, 22, 23, 24, 17,
25, 17, 17, 31, 31, 32, 31, 31, 32, 35,
33, 35, 41, 33, 28, 28, 28, 29, 34, 35,
35, 36, 37, 73, 42, 38, 35, 49, 68, 35,
35, 39, 28, 28, 28, 29, 34, 43, 45, 36,
37, 40, 44, 35, 46, 35, 35, 35, 51, 53,
249, 35, 50, 35, 55, 65, 35, 47, 56, 28,
59, 48, 31, 31, 32, 60, 35, 71, 67, 33,
33, 260, 41, 33, 28, 28, 28, 29, 34, 35,
35, 36, 37, 75, 42, 38, 35, 50, 43, 35,
35, 39, 28, 28, 28, 29, 34, 44, 46, 36,
37, 40, 45, 35, 47, 35, 35, 35, 52, 54,
35, 35, 51, 35, 56, 66, 266, 48, 57, 28,
60, 49, 31, 31, 32, 61, 35, 69, 68, 33,
28, 28, 28, 29, 35, 35, 35, 28, 37, 61,
61, 61, 62, 61, 35, 70, 61, 63, 66, 35,
49, 35, 35, 72, 74, 35, 69, 35, 75, 35,
35, 35, 35, 88, 35, 35, 82, 78, 35, 28,
59, 77, 87, 35, 76, 60, 80, 79, 81, 28,
84, 78, 35, 89, 35, 85, 35, 35, 35, 75,
35, 92, 35, 96, 35, 35, 90, 97, 35, 35,
93, 35, 94, 91, 99, 35, 35, 35, 254, 100,
95, 101, 102, 104, 35, 35, 98, 103, 35, 105,
28, 84, 111, 106, 35, 35, 85, 107, 107, 61,
28, 28, 28, 29, 35, 35, 35, 28, 37, 62,
62, 62, 63, 62, 35, 72, 62, 64, 67, 35,
50, 35, 35, 71, 35, 35, 70, 76, 35, 35,
35, 77, 73, 35, 35, 35, 35, 35, 80, 74,
84, 89, 90, 79, 35, 35, 35, 78, 35, 82,
81, 83, 80, 28, 60, 28, 86, 35, 91, 61,
92, 87, 35, 35, 93, 35, 94, 95, 77, 96,
35, 35, 99, 100, 35, 35, 35, 102, 35, 35,
35, 35, 97, 35, 104, 105, 103, 35, 35, 98,
106, 28, 86, 35, 107, 115, 35, 87, 101, 109,
108, 107, 35, 253, 107, 110, 112, 114, 113, 35,
75, 78, 99, 35, 35, 116, 117, 117, 61, 118,
117, 134, 35, 117, 120, 121, 121, 61, 122, 121,
35, 251, 121, 124, 125, 125, 61, 126, 125, 35,
137, 125, 128, 135, 102, 129, 35, 130, 130, 61,
131, 130, 136, 35, 130, 133, 28, 139, 28, 141,
35, 144, 140, 35, 142, 35, 151, 35, 35, 28,
153, 28, 155, 143, 249, 154, 35, 156, 145, 146,
146, 61, 147, 146, 150, 35, 146, 149, 28, 158,
28, 160, 28, 163, 159, 167, 161, 35, 164, 28,
114, 108, 110, 110, 62, 111, 110, 35, 35, 110,
113, 35, 118, 117, 35, 35, 116, 80, 102, 35,
35, 265, 105, 77, 35, 35, 141, 120, 121, 121,
62, 122, 121, 138, 133, 121, 124, 125, 125, 62,
126, 125, 140, 35, 125, 128, 129, 129, 62, 130,
129, 182, 35, 129, 132, 134, 134, 62, 135, 134,
35, 35, 134, 137, 139, 28, 143, 28, 145, 148,
35, 144, 35, 146, 147, 35, 242, 156, 35, 35,
28, 158, 28, 160, 35, 149, 159, 183, 161, 35,
244, 150, 151, 151, 62, 152, 151, 155, 262, 151,
165, 28, 169, 28, 171, 166, 35, 170, 216, 172,
177, 35, 28, 139, 35, 173, 35, 178, 140, 218,
179, 28, 181, 28, 183, 174, 209, 182, 35, 184,
185, 35, 186, 186, 61, 187, 186, 28, 153, 186,
189, 28, 158, 154, 28, 163, 35, 159, 190, 35,
164, 28, 169, 192, 35, 234, 191, 170, 197, 35,
199, 35, 28, 181, 28, 203, 28, 205, 182, 236,
204, 218, 206, 64, 211, 28, 203, 35, 198, 219,
220, 204, 225, 225, 61, 226, 225, 234, 218, 225,
228, 35, 232, 28, 238, 242, 235, 28, 240, 239,
154, 28, 163, 28, 165, 28, 168, 164, 172, 166,
35, 169, 28, 170, 28, 174, 28, 176, 171, 35,
175, 35, 177, 28, 143, 184, 185, 35, 178, 144,
216, 35, 35, 28, 187, 28, 189, 197, 179, 188,
260, 190, 191, 35, 192, 192, 62, 193, 192, 28,
158, 192, 195, 28, 163, 159, 28, 168, 35, 164,
196, 35, 169, 28, 174, 198, 35, 203, 35, 175,
205, 35, 28, 187, 28, 210, 28, 212, 188, 225,
211, 223, 213, 65, 218, 225, 34, 204, 28, 28,
28, 29, 228, 226, 227, 28, 37, 28, 210, 245,
218, 28, 238, 241, 245, 35, 218, 239, 215, 218,
218, 243, 208, 201, 234, 231, 196, 229, 224, 222,
215, 213, 176, 208, 244, 247, 246, 201, 250, 26,
26, 26, 26, 28, 28, 28, 30, 30, 30, 30,
35, 35, 35, 35, 57, 196, 57, 57, 58, 58,
58, 58, 60, 194, 60, 60, 34, 34, 34, 34,
64, 64, 176, 64, 83, 83, 83, 83, 85, 115,
85, 85, 109, 109, 109, 109, 119, 119, 119, 119,
123, 123, 123, 123, 127, 127, 127, 127, 132, 132,
132, 132, 138, 138, 138, 138, 140, 86, 140, 140,
35, 222, 242, 211, 225, 206, 233, 233, 62, 234,
233, 243, 34, 233, 236, 240, 28, 247, 28, 249,
225, 35, 248, 34, 250, 251, 225, 252, 28, 247,
255, 35, 225, 254, 248, 258, 225, 263, 267, 268,
34, 215, 34, 34, 253, 208, 256, 242, 257, 239,
202, 237, 232, 34, 261, 26, 26, 26, 26, 28,
28, 28, 30, 30, 30, 30, 35, 35, 35, 35,
58, 230, 58, 58, 59, 59, 59, 59, 61, 222,
61, 61, 34, 34, 34, 34, 65, 65, 220, 65,
85, 85, 85, 85, 87, 181, 87, 87, 112, 112,
148, 148, 148, 148, 152, 152, 152, 152, 154, 35,
154, 154, 157, 157, 157, 157, 159, 29, 159, 159,
162, 162, 162, 162, 164, 54, 164, 164, 168, 168,
168, 168, 170, 52, 170, 170, 175, 175, 175, 175,
142, 35, 142, 142, 180, 180, 180, 180, 182, 29,
182, 182, 188, 188, 188, 188, 156, 255, 156, 156,
161, 27, 161, 161, 166, 27, 166, 166, 172, 255,
172, 172, 193, 193, 193, 193, 195, 195, 195, 195,
184, 255, 184, 184, 200, 200, 200, 200, 202, 202,
202, 202, 204, 255, 204, 204, 207, 207, 207, 207,
112, 112, 123, 123, 123, 123, 127, 127, 127, 127,
131, 131, 131, 131, 136, 136, 136, 136, 142, 142,
142, 142, 144, 215, 144, 144, 153, 153, 153, 153,
157, 157, 157, 157, 159, 208, 159, 159, 162, 162,
162, 162, 164, 202, 164, 164, 167, 167, 167, 167,
169, 200, 169, 169, 173, 173, 173, 173, 175, 181,
175, 175, 180, 180, 180, 180, 146, 119, 146, 146,
186, 186, 186, 186, 188, 88, 188, 188, 194, 194,
194, 194, 161, 35, 161, 161, 166, 29, 166, 166,
171, 55, 171, 171, 177, 53, 177, 177, 199, 199,
210, 210, 210, 210, 212, 212, 212, 212, 214, 214,
214, 214, 217, 217, 217, 217, 221, 221, 221, 221,
206, 255, 206, 206, 223, 223, 223, 223, 227, 227,
227, 227, 211, 255, 211, 211, 230, 230, 230, 230,
233, 233, 233, 233, 237, 237, 237, 237, 239, 255,
239, 239, 241, 255, 241, 241, 248, 248, 248, 248,
252, 252, 252, 252, 5, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255
199, 199, 201, 201, 201, 201, 190, 35, 190, 190,
207, 207, 207, 207, 209, 209, 209, 209, 211, 29,
211, 211, 214, 214, 214, 214, 217, 217, 217, 217,
219, 219, 219, 219, 221, 221, 221, 221, 224, 224,
224, 224, 229, 229, 229, 229, 213, 269, 213, 213,
231, 231, 231, 231, 235, 235, 235, 235, 218, 27,
218, 218, 238, 238, 238, 238, 241, 241, 241, 241,
246, 246, 246, 246, 248, 27, 248, 248, 250, 269,
250, 250, 259, 259, 259, 259, 264, 264, 264, 264,
5, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269
} ;
static yyconst flex_int16_t yy_chk[699] =
static yyconst flex_int16_t yy_chk[725] =
{ 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 7, 7, 7, 8, 8, 8, 13,
7, 41, 13, 8, 11, 11, 11, 11, 11, 47,
14, 11, 11, 47, 14, 11, 19, 19, 41, 15,
7, 264, 13, 8, 11, 11, 11, 11, 11, 48,
14, 11, 11, 48, 14, 11, 19, 19, 14, 15,
16, 11, 12, 12, 12, 12, 12, 14, 16, 12,
12, 12, 15, 18, 16, 20, 21, 23, 21, 23,
252, 25, 20, 38, 25, 38, 45, 18, 25, 30,
30, 18, 31, 31, 31, 30, 40, 45, 40, 31,
41, 25, 20, 38, 25, 38, 261, 18, 25, 30,
30, 18, 31, 31, 31, 30, 40, 41, 40, 31,
34, 34, 34, 34, 39, 42, 46, 34, 34, 36,
36, 36, 36, 36, 43, 43, 36, 36, 39, 44,
44, 50, 48, 46, 48, 49, 42, 51, 49, 52,
53, 54, 55, 66, 56, 66, 55, 56, 65, 58,
58, 51, 65, 67, 50, 58, 54, 53, 54, 61,
61, 52, 68, 67, 69, 61, 70, 71, 72, 70,
73, 71, 74, 75, 77, 75, 68, 76, 82, 76,
72, 79, 73, 69, 78, 87, 78, 81, 250, 79,
74, 80, 80, 81, 80, 91, 77, 80, 89, 82,
83, 83, 89, 87, 90, 94, 83, 88, 88, 88,
34, 34, 34, 34, 39, 42, 43, 34, 34, 36,
36, 36, 36, 36, 44, 44, 36, 36, 39, 45,
45, 46, 47, 43, 51, 49, 42, 49, 50, 52,
53, 50, 46, 54, 55, 57, 56, 66, 57, 47,
56, 66, 67, 52, 67, 70, 69, 51, 68, 55,
54, 55, 53, 59, 59, 62, 62, 74, 68, 59,
69, 62, 71, 73, 70, 72, 71, 73, 72, 74,
75, 76, 77, 78, 77, 78, 79, 80, 81, 80,
84, 89, 75, 92, 82, 82, 81, 82, 83, 76,
82, 85, 85, 93, 83, 92, 91, 85, 79, 89,
88, 88, 95, 248, 88, 88, 90, 92, 91, 92,
95, 98, 98, 103, 98, 94, 96, 96, 96, 96,
96, 103, 106, 96, 96, 97, 97, 97, 97, 97,
100, 247, 97, 97, 99, 99, 99, 99, 99, 104,
106, 99, 99, 104, 101, 100, 101, 102, 102, 102,
102, 102, 105, 105, 102, 102, 107, 107, 109, 109,
111, 112, 107, 113, 109, 115, 116, 112, 116, 117,
117, 119, 119, 111, 245, 117, 129, 119, 113, 114,
114, 114, 114, 114, 115, 198, 114, 114, 121, 121,
123, 123, 125, 125, 121, 129, 123, 134, 125, 127,
91, 84, 90, 90, 90, 90, 90, 97, 109, 90,
90, 94, 95, 94, 95, 98, 93, 101, 101, 103,
101, 259, 104, 98, 104, 106, 109, 97, 99, 99,
99, 99, 99, 106, 103, 99, 99, 100, 100, 100,
100, 100, 108, 108, 100, 100, 102, 102, 102, 102,
102, 141, 141, 102, 102, 105, 105, 105, 105, 105,
107, 114, 105, 105, 107, 110, 110, 112, 112, 115,
116, 110, 117, 112, 114, 115, 227, 120, 119, 120,
121, 121, 123, 123, 147, 116, 121, 147, 123, 133,
227, 117, 118, 118, 118, 118, 118, 119, 257, 118,
127, 130, 130, 132, 132, 127, 135, 130, 198, 132,
137, 137, 138, 138, 143, 134, 145, 143, 138, 233,
145, 146, 146, 148, 148, 135, 191, 146, 191, 148,
150, 150, 151, 151, 151, 151, 151, 152, 152, 151,
151, 157, 157, 152, 162, 162, 173, 157, 167, 167,
162, 168, 168, 174, 174, 220, 173, 168, 178, 178,
179, 179, 180, 180, 186, 186, 188, 188, 180, 220,
186, 199, 188, 192, 192, 202, 202, 216, 178, 199,
199, 202, 209, 209, 209, 209, 209, 219, 235, 209,
209, 232, 216, 225, 225, 232, 219, 227, 227, 225,
118, 125, 125, 127, 127, 129, 129, 125, 133, 127,
138, 129, 131, 131, 134, 134, 136, 136, 131, 139,
134, 149, 136, 142, 142, 149, 150, 178, 138, 142,
197, 150, 197, 151, 151, 153, 153, 178, 139, 151,
255, 153, 155, 155, 156, 156, 156, 156, 156, 157,
157, 156, 156, 162, 162, 157, 167, 167, 204, 162,
172, 172, 167, 173, 173, 179, 179, 183, 183, 173,
184, 184, 186, 186, 192, 192, 194, 194, 186, 241,
192, 204, 194, 198, 198, 205, 206, 183, 185, 185,
185, 185, 206, 205, 205, 185, 185, 209, 209, 228,
236, 237, 237, 227, 242, 242, 243, 237, 230, 244,
246, 235, 223, 221, 217, 214, 212, 210, 207, 200,
197, 195, 193, 190, 236, 244, 243, 185, 246, 256,
256, 256, 256, 257, 257, 257, 258, 258, 258, 258,
259, 259, 259, 259, 260, 177, 260, 260, 261, 261,
261, 261, 262, 175, 262, 262, 263, 263, 263, 263,
264, 264, 136, 264, 265, 265, 265, 265, 266, 93,
266, 266, 267, 267, 267, 267, 268, 268, 268, 268,
269, 269, 269, 269, 270, 270, 270, 270, 271, 271,
271, 271, 272, 272, 272, 272, 273, 64, 273, 273,
223, 238, 226, 209, 243, 185, 216, 216, 216, 216,
216, 226, 228, 216, 216, 223, 233, 233, 235, 235,
244, 240, 233, 245, 235, 240, 252, 243, 246, 246,
251, 251, 253, 245, 246, 254, 256, 258, 263, 267,
258, 231, 263, 254, 244, 229, 252, 224, 253, 221,
219, 217, 214, 267, 256, 270, 270, 270, 270, 271,
271, 271, 272, 272, 272, 272, 273, 273, 273, 273,
274, 207, 274, 274, 275, 275, 275, 275, 276, 203,
276, 276, 277, 277, 277, 277, 278, 278, 201, 278,
279, 279, 279, 279, 280, 199, 280, 280, 281, 281,
274, 274, 274, 274, 275, 275, 275, 275, 276, 35,
276, 276, 277, 277, 277, 277, 278, 28, 278, 278,
279, 279, 279, 279, 280, 24, 280, 280, 281, 281,
281, 281, 282, 22, 282, 282, 283, 283, 283, 283,
284, 17, 284, 284, 285, 285, 285, 285, 286, 6,
286, 286, 287, 287, 287, 287, 288, 5, 288, 288,
289, 4, 289, 289, 290, 3, 290, 290, 291, 0,
291, 291, 292, 292, 292, 292, 293, 293, 293, 293,
294, 0, 294, 294, 295, 295, 295, 295, 296, 296,
296, 296, 297, 0, 297, 297, 298, 298, 298, 298,
281, 281, 282, 282, 282, 282, 283, 283, 283, 283,
284, 284, 284, 284, 285, 285, 285, 285, 286, 286,
286, 286, 287, 196, 287, 287, 288, 288, 288, 288,
289, 289, 289, 289, 290, 191, 290, 290, 291, 291,
291, 291, 292, 182, 292, 292, 293, 293, 293, 293,
294, 180, 294, 294, 295, 295, 295, 295, 296, 140,
296, 296, 297, 297, 297, 297, 298, 96, 298, 298,
299, 299, 299, 299, 300, 65, 300, 300, 301, 301,
301, 301, 302, 35, 302, 302, 303, 28, 303, 303,
304, 24, 304, 304, 305, 22, 305, 305, 306, 306,
299, 299, 299, 299, 300, 300, 300, 300, 301, 301,
301, 301, 302, 302, 302, 302, 303, 303, 303, 303,
304, 0, 304, 304, 305, 305, 305, 305, 306, 306,
306, 306, 307, 0, 307, 307, 308, 308, 308, 308,
309, 309, 309, 309, 310, 310, 310, 310, 311, 0,
311, 311, 312, 0, 312, 312, 313, 313, 313, 313,
314, 314, 314, 314, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255
306, 306, 307, 307, 307, 307, 308, 17, 308, 308,
309, 309, 309, 309, 310, 310, 310, 310, 311, 6,
311, 311, 312, 312, 312, 312, 313, 313, 313, 313,
314, 314, 314, 314, 315, 315, 315, 315, 316, 316,
316, 316, 317, 317, 317, 317, 318, 5, 318, 318,
319, 319, 319, 319, 320, 320, 320, 320, 321, 4,
321, 321, 322, 322, 322, 322, 323, 323, 323, 323,
324, 324, 324, 324, 325, 3, 325, 325, 326, 0,
326, 326, 327, 327, 327, 327, 328, 328, 328, 328,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269, 269, 269, 269, 269, 269, 269,
269, 269, 269, 269
} ;
#define YY_TRAILING_MASK 0x2000
@@ -890,7 +900,7 @@ static int vdev_and_devtype(DiskParseContext *dpc, char *str) {
#define DPC ((DiskParseContext*)yyextra)
#line 894 "libxlu_disk_l.c"
#line 904 "libxlu_disk_l.c"
#define INITIAL 0
#define LEXERR 1
@@ -1131,7 +1141,7 @@ YY_DECL
/*----- the scanner rules which do the parsing -----*/
#line 1135 "libxlu_disk_l.c"
#line 1145 "libxlu_disk_l.c"
if ( !yyg->yy_init )
{
@@ -1195,14 +1205,14 @@ yy_match:
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
if ( yy_current_state >= 256 )
if ( yy_current_state >= 270 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
*yyg->yy_state_ptr++ = yy_current_state;
++yy_cp;
}
while ( yy_current_state != 255 );
while ( yy_current_state != 269 );
yy_find_action:
yy_current_state = *--yyg->yy_state_ptr;
@@ -1313,34 +1323,39 @@ YY_RULE_SETUP
#line 175 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("script", script, FROMEQUALS); }
YY_BREAK
/* the target magic parameter, eats the rest of the string */
case 12:
YY_RULE_SETUP
#line 179 "libxlu_disk_l.l"
#line 176 "libxlu_disk_l.l"
{ DPC->disk->direct_io_safe = 1; }
YY_BREAK
/* the target magic parameter, eats the rest of the string */
case 13:
YY_RULE_SETUP
#line 180 "libxlu_disk_l.l"
{ STRIP(','); SAVESTRING("target", pdev_path, FROMEQUALS); }
YY_BREAK
/* unknown parameters */
case 13:
/* rule 13 can match eol */
case 14:
/* rule 14 can match eol */
YY_RULE_SETUP
#line 183 "libxlu_disk_l.l"
#line 184 "libxlu_disk_l.l"
{ xlu__disk_err(DPC,yytext,"unknown parameter"); }
YY_BREAK
/* deprecated prefixes */
/* the "/.*" in these patterns ensures that they count as if they
* matched the whole string, so these patterns take precedence */
case 14:
case 15:
YY_RULE_SETUP
#line 190 "libxlu_disk_l.l"
#line 191 "libxlu_disk_l.l"
{
STRIP(':');
DPC->had_depr_prefix=1; DEPRECATE("use `[format=]...,'");
setformat(DPC, yytext);
}
YY_BREAK
case 15:
case 16:
YY_RULE_SETUP
#line 196 "libxlu_disk_l.l"
#line 197 "libxlu_disk_l.l"
{
char *newscript;
STRIP(':');
@@ -1354,30 +1369,22 @@ YY_RULE_SETUP
free(newscript);
}
YY_BREAK
case 16:
case 17:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 8;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 209 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 17:
YY_RULE_SETUP
#line 210 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 18:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 211 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 19:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 212 "libxlu_disk_l.l"
@@ -1385,7 +1392,7 @@ YY_RULE_SETUP
YY_BREAK
case 20:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
yyg->yy_c_buf_p = yy_cp = yy_bp + 6;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 213 "libxlu_disk_l.l"
@@ -1393,26 +1400,34 @@ YY_RULE_SETUP
YY_BREAK
case 21:
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
yyg->yy_c_buf_p = yy_cp = yy_bp + 5;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 214 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 22:
/* rule 22 can match eol */
*yy_cp = yyg->yy_hold_char; /* undo effects of setting up yytext */
yyg->yy_c_buf_p = yy_cp = yy_bp + 4;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
#line 216 "libxlu_disk_l.l"
#line 215 "libxlu_disk_l.l"
{ DPC->had_depr_prefix=1; DEPRECATE(0); }
YY_BREAK
case 23:
/* rule 23 can match eol */
YY_RULE_SETUP
#line 217 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"unknown deprecated disk prefix");
return 0;
}
YY_BREAK
/* positional parameters */
case 23:
/* rule 23 can match eol */
case 24:
/* rule 24 can match eol */
YY_RULE_SETUP
#line 223 "libxlu_disk_l.l"
#line 224 "libxlu_disk_l.l"
{
STRIP(',');
@@ -1439,27 +1454,27 @@ YY_RULE_SETUP
}
}
YY_BREAK
case 24:
case 25:
YY_RULE_SETUP
#line 249 "libxlu_disk_l.l"
#line 250 "libxlu_disk_l.l"
{
BEGIN(LEXERR);
yymore();
}
YY_BREAK
case 25:
case 26:
YY_RULE_SETUP
#line 253 "libxlu_disk_l.l"
#line 254 "libxlu_disk_l.l"
{
xlu__disk_err(DPC,yytext,"bad disk syntax"); return 0;
}
YY_BREAK
case 26:
case 27:
YY_RULE_SETUP
#line 256 "libxlu_disk_l.l"
#line 257 "libxlu_disk_l.l"
YY_FATAL_ERROR( "flex scanner jammed" );
YY_BREAK
#line 1463 "libxlu_disk_l.c"
#line 1478 "libxlu_disk_l.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(LEXERR):
yyterminate();
@@ -1723,7 +1738,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
if ( yy_current_state >= 256 )
if ( yy_current_state >= 270 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
@@ -1747,11 +1762,11 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
{
yy_current_state = (int) yy_def[yy_current_state];
if ( yy_current_state >= 256 )
if ( yy_current_state >= 270 )
yy_c = yy_meta[(unsigned int) yy_c];
}
yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
yy_is_jam = (yy_current_state == 255);
yy_is_jam = (yy_current_state == 269);
if ( ! yy_is_jam )
*yyg->yy_state_ptr++ = yy_current_state;
@@ -2551,4 +2566,4 @@ void xlu__disk_yyfree (void * ptr , yyscan_t yyscanner)
#define YYTABLES_NAME "yytables"
#line 256 "libxlu_disk_l.l"
#line 257 "libxlu_disk_l.l"
tools/libxl/libxlu_disk_l.h
+1 -1
View File
@@ -344,7 +344,7 @@ extern int xlu__disk_yylex (yyscan_t yyscanner);
#undef YY_DECL
#endif
#line 256 "libxlu_disk_l.l"
#line 257 "libxlu_disk_l.l"
#line 350 "libxlu_disk_l.h"
#undef xlu__disk_yyIN_HEADER
tools/libxl/libxlu_disk_l.l
+1
View File
@@ -173,6 +173,7 @@ backendtype=[^,]*,? { STRIP(','); setbackendtype(DPC,FROMEQUALS); }
vdev=[^,]*,? { STRIP(','); SAVESTRING("vdev", vdev, FROMEQUALS); }
script=[^,]*,? { STRIP(','); SAVESTRING("script", script, FROMEQUALS); }
direct-io-safe,? { DPC->disk->direct_io_safe = 1; }
/* the target magic parameter, eats the rest of the string */
xen/include/public/io/blkif.h
+22
View File
@@ -97,6 +97,28 @@
*
* The type of the backing device/object.
*
*
* direct-io-safe
* Values: 0/1 (boolean)
* Default Value: 0
*
* The underlying storage is not affected by the direct IO memory
* lifetime bug. See:
* http://lists.xen.org/archives/html/xen-devel/2012-12/msg01154.html
*
* Therefore this option gives the backend permission to use
* O_DIRECT, notwithstanding that bug.
*
* That is, if this option is enabled, use of O_DIRECT is safe,
* in circumstances where we would normally have avoided it as a
* workaround for that bug. This option is not relevant for all
* backends, and even not necessarily supported for those for
* which it is relevant. A backend which knows that it is not
* affected by the bug can ignore this option.
*
* This option doesn't require a backend to use O_DIRECT, so it
* should not be used to try to control the caching behaviour.
*
*--------------------------------- Features ---------------------------------
*
* feature-barrier
Reference in new issue
xen-project/xen
Block a user
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.

The note is not visible to the blocked user.