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-rw-r--r--meta/recipes-devtools/syslinux/syslinux/0008-libinstaller-syslinuxext-implement-syslinux_patch_bo.patch427
1 files changed, 427 insertions, 0 deletions
diff --git a/meta/recipes-devtools/syslinux/syslinux/0008-libinstaller-syslinuxext-implement-syslinux_patch_bo.patch b/meta/recipes-devtools/syslinux/syslinux/0008-libinstaller-syslinuxext-implement-syslinux_patch_bo.patch
new file mode 100644
index 0000000000..2400c98d6a
--- /dev/null
+++ b/meta/recipes-devtools/syslinux/syslinux/0008-libinstaller-syslinuxext-implement-syslinux_patch_bo.patch
@@ -0,0 +1,427 @@
1From 78d76b87a4b855e6b661ae457283a63f385c04c9 Mon Sep 17 00:00:00 2001
2From: Robert Yang <liezhi.yang@windriver.com>
3Date: Fri, 2 Jan 2015 12:26:46 +0800
4Subject: [PATCH 8/9] libinstaller/syslinuxext: implement
5 syslinux_patch_bootsect()
6
7Move the related from extlinux/main.c to libinstaller/syslinuxext.c, the
8syslinux_patch_bootsect() are used by both extlinux/main.c and
9linux/syslinux.c.
10
11Upstream-Status: Submitted
12
13Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
14Tested-by: Du Dolpher <dolpher.du@intel.com>
15---
16 extlinux/Makefile | 3 +-
17 extlinux/main.c | 167 +-------------------------------------------
18 libinstaller/syslinuxext.c | 170 +++++++++++++++++++++++++++++++++++++++++++++
19 3 files changed, 175 insertions(+), 165 deletions(-)
20
21diff --git a/extlinux/Makefile b/extlinux/Makefile
22index 02d1db5..90dd92f 100644
23--- a/extlinux/Makefile
24+++ b/extlinux/Makefile
25@@ -31,7 +31,8 @@ SRCS = main.c \
26 ../libinstaller/advio.c \
27 ../libinstaller/bootsect_bin.c \
28 ../libinstaller/ldlinuxc32_bin.c \
29- ../libinstaller/ldlinux_bin.c
30+ ../libinstaller/ldlinux_bin.c \
31+ ../libinstaller/syslinuxext.c
32 OBJS = $(patsubst %.c,%.o,$(notdir $(SRCS)))
33
34 .SUFFIXES: .c .o .i .s .S
35diff --git a/extlinux/main.c b/extlinux/main.c
36index 09740bd..6fe026e 100644
37--- a/extlinux/main.c
38+++ b/extlinux/main.c
39@@ -60,6 +60,7 @@
40 #include "setadv.h"
41 #include "syslxopt.h" /* unified options */
42 #include "mountinfo.h"
43+#include "syslinuxext.h"
44
45 #ifdef DEBUG
46 # define dprintf printf
47@@ -67,10 +68,6 @@
48 # define dprintf(...) ((void)0)
49 #endif
50
51-#ifndef EXT2_SUPER_OFFSET
52-#define EXT2_SUPER_OFFSET 1024
53-#endif
54-
55 /* Since we have unused 2048 bytes in the primary AG of an XFS partition,
56 * we will use the first 0~512 bytes starting from 2048 for the Syslinux
57 * boot sector.
58@@ -92,136 +89,6 @@ static char subvol[BTRFS_SUBVOL_MAX];
59 - 2*ADV_SIZE)
60
61 /*
62- * Get the size of a block device
63- */
64-static uint64_t get_size(int devfd)
65-{
66- uint64_t bytes;
67- uint32_t sects;
68- struct stat st;
69-
70-#ifdef BLKGETSIZE64
71- if (!ioctl(devfd, BLKGETSIZE64, &bytes))
72- return bytes;
73-#endif
74- if (!ioctl(devfd, BLKGETSIZE, &sects))
75- return (uint64_t) sects << 9;
76- else if (!fstat(devfd, &st) && st.st_size)
77- return st.st_size;
78- else
79- return 0;
80-}
81-
82-/*
83- * Get device geometry and partition offset
84- */
85-struct geometry_table {
86- uint64_t bytes;
87- struct hd_geometry g;
88-};
89-
90-static int sysfs_get_offset(int devfd, unsigned long *start)
91-{
92- struct stat st;
93- char sysfs_name[128];
94- FILE *f;
95- int rv;
96-
97- if (fstat(devfd, &st))
98- return -1;
99-
100- if ((size_t)snprintf(sysfs_name, sizeof sysfs_name,
101- "/sys/dev/block/%u:%u/start",
102- major(st.st_rdev), minor(st.st_rdev))
103- >= sizeof sysfs_name)
104- return -1;
105-
106- f = fopen(sysfs_name, "r");
107- if (!f)
108- return -1;
109-
110- rv = fscanf(f, "%lu", start);
111- fclose(f);
112-
113- return (rv == 1) ? 0 : -1;
114-}
115-
116-/* Standard floppy disk geometries, plus LS-120. Zipdisk geometry
117- (x/64/32) is the final fallback. I don't know what LS-240 has
118- as its geometry, since I don't have one and don't know anyone that does,
119- and Google wasn't helpful... */
120-static const struct geometry_table standard_geometries[] = {
121- {360 * 1024, {2, 9, 40, 0}},
122- {720 * 1024, {2, 9, 80, 0}},
123- {1200 * 1024, {2, 15, 80, 0}},
124- {1440 * 1024, {2, 18, 80, 0}},
125- {1680 * 1024, {2, 21, 80, 0}},
126- {1722 * 1024, {2, 21, 80, 0}},
127- {2880 * 1024, {2, 36, 80, 0}},
128- {3840 * 1024, {2, 48, 80, 0}},
129- {123264 * 1024, {8, 32, 963, 0}}, /* LS120 */
130- {0, {0, 0, 0, 0}}
131-};
132-
133-int get_geometry(int devfd, uint64_t totalbytes, struct hd_geometry *geo)
134-{
135- struct floppy_struct fd_str;
136- struct loop_info li;
137- struct loop_info64 li64;
138- const struct geometry_table *gp;
139- int rv = 0;
140-
141- memset(geo, 0, sizeof *geo);
142-
143- if (!ioctl(devfd, HDIO_GETGEO, geo)) {
144- goto ok;
145- } else if (!ioctl(devfd, FDGETPRM, &fd_str)) {
146- geo->heads = fd_str.head;
147- geo->sectors = fd_str.sect;
148- geo->cylinders = fd_str.track;
149- geo->start = 0;
150- goto ok;
151- }
152-
153- /* Didn't work. Let's see if this is one of the standard geometries */
154- for (gp = standard_geometries; gp->bytes; gp++) {
155- if (gp->bytes == totalbytes) {
156- memcpy(geo, &gp->g, sizeof *geo);
157- goto ok;
158- }
159- }
160-
161- /* Didn't work either... assign a geometry of 64 heads, 32 sectors; this is
162- what zipdisks use, so this would help if someone has a USB key that
163- they're booting in USB-ZIP mode. */
164-
165- geo->heads = opt.heads ? : 64;
166- geo->sectors = opt.sectors ? : 32;
167- geo->cylinders = totalbytes / (geo->heads * geo->sectors << SECTOR_SHIFT);
168- geo->start = 0;
169-
170- if (!opt.sectors && !opt.heads) {
171- fprintf(stderr,
172- "Warning: unable to obtain device geometry (defaulting to %d heads, %d sectors)\n"
173- " (on hard disks, this is usually harmless.)\n",
174- geo->heads, geo->sectors);
175- rv = 1; /* Suboptimal result */
176- }
177-
178-ok:
179- /* If this is a loopback device, try to set the start */
180- if (!ioctl(devfd, LOOP_GET_STATUS64, &li64))
181- geo->start = li64.lo_offset >> SECTOR_SHIFT;
182- else if (!ioctl(devfd, LOOP_GET_STATUS, &li))
183- geo->start = (unsigned int)li.lo_offset >> SECTOR_SHIFT;
184- else if (!sysfs_get_offset(devfd, &geo->start)) {
185- /* OK */
186- }
187-
188- return rv;
189-}
190-
191-/*
192 * Query the device geometry and put it into the boot sector.
193 * Map the file and put the map in the boot sector and file.
194 * Stick the "current directory" inode number into the file.
195@@ -231,11 +98,8 @@ ok:
196 static int patch_file_and_bootblock(int fd, const char *dir, int devfd)
197 {
198 struct stat dirst, xdst;
199- struct hd_geometry geo;
200 sector_t *sectp;
201- uint64_t totalbytes, totalsectors;
202 int nsect;
203- struct fat_boot_sector *sbs;
204 char *dirpath, *subpath, *xdirpath;
205 int rv;
206
207@@ -279,33 +143,8 @@ static int patch_file_and_bootblock(int fd, const char *dir, int devfd)
208 /* Now subpath should contain the path relative to the fs base */
209 dprintf("subpath = %s\n", subpath);
210
211- totalbytes = get_size(devfd);
212- get_geometry(devfd, totalbytes, &geo);
213-
214- if (opt.heads)
215- geo.heads = opt.heads;
216- if (opt.sectors)
217- geo.sectors = opt.sectors;
218-
219- /* Patch this into a fake FAT superblock. This isn't because
220- FAT is a good format in any way, it's because it lets the
221- early bootstrap share code with the FAT version. */
222- dprintf("heads = %u, sect = %u\n", geo.heads, geo.sectors);
223-
224- sbs = (struct fat_boot_sector *)syslinux_bootsect;
225-
226- totalsectors = totalbytes >> SECTOR_SHIFT;
227- if (totalsectors >= 65536) {
228- set_16(&sbs->bsSectors, 0);
229- } else {
230- set_16(&sbs->bsSectors, totalsectors);
231- }
232- set_32(&sbs->bsHugeSectors, totalsectors);
233-
234- set_16(&sbs->bsBytesPerSec, SECTOR_SIZE);
235- set_16(&sbs->bsSecPerTrack, geo.sectors);
236- set_16(&sbs->bsHeads, geo.heads);
237- set_32(&sbs->bsHiddenSecs, geo.start);
238+ /* Patch syslinux_bootsect */
239+ syslinux_patch_bootsect(devfd);
240
241 /* Construct the boot file map */
242
243diff --git a/libinstaller/syslinuxext.c b/libinstaller/syslinuxext.c
244index bb54cef..5a4423b 100644
245--- a/libinstaller/syslinuxext.c
246+++ b/libinstaller/syslinuxext.c
247@@ -1,7 +1,177 @@
248 #define _GNU_SOURCE
249
250+#include <sys/stat.h>
251+#include <sys/types.h>
252+#include <getopt.h>
253+#include <ext2fs/ext2fs.h>
254+
255+#include "linuxioctl.h"
256+#include "syslinux.h"
257+#include "syslxint.h"
258+#include "syslxopt.h"
259+
260+/*
261+ * Get the size of a block device
262+ */
263+static uint64_t get_size(int dev_fd)
264+{
265+ uint64_t bytes;
266+ uint32_t sects;
267+ struct stat st;
268+
269+#ifdef BLKGETSIZE64
270+ if (!ioctl(dev_fd, BLKGETSIZE64, &bytes))
271+ return bytes;
272+#endif
273+ if (!ioctl(dev_fd, BLKGETSIZE, &sects))
274+ return (uint64_t) sects << 9;
275+ else if (!fstat(dev_fd, &st) && st.st_size)
276+ return st.st_size;
277+ else
278+ return 0;
279+}
280+
281+/*
282+ * Get device geometry and partition offset
283+ */
284+static struct geometry_table {
285+ uint64_t bytes;
286+ struct hd_geometry g;
287+};
288+
289+static int sysfs_get_offset(int dev_fd, unsigned long *start)
290+{
291+ struct stat st;
292+ char sysfs_name[128];
293+ FILE *f;
294+ int rv;
295+
296+ if (fstat(dev_fd, &st))
297+ return -1;
298+
299+ if ((size_t)snprintf(sysfs_name, sizeof sysfs_name,
300+ "/sys/dev/block/%u:%u/start",
301+ major(st.st_rdev), minor(st.st_rdev))
302+ >= sizeof sysfs_name)
303+ return -1;
304+
305+ f = fopen(sysfs_name, "r");
306+ if (!f)
307+ return -1;
308+
309+ rv = fscanf(f, "%lu", start);
310+ fclose(f);
311+
312+ return (rv == 1) ? 0 : -1;
313+}
314+
315+/* Standard floppy disk geometries, plus LS-120. Zipdisk geometry
316+ (x/64/32) is the final fallback. I don't know what LS-240 has
317+ as its geometry, since I don't have one and don't know anyone that does,
318+ and Google wasn't helpful... */
319+static const struct geometry_table standard_geometries[] = {
320+ {360 * 1024, {2, 9, 40, 0}},
321+ {720 * 1024, {2, 9, 80, 0}},
322+ {1200 * 1024, {2, 15, 80, 0}},
323+ {1440 * 1024, {2, 18, 80, 0}},
324+ {1680 * 1024, {2, 21, 80, 0}},
325+ {1722 * 1024, {2, 21, 80, 0}},
326+ {2880 * 1024, {2, 36, 80, 0}},
327+ {3840 * 1024, {2, 48, 80, 0}},
328+ {123264 * 1024, {8, 32, 963, 0}}, /* LS120 */
329+ {0, {0, 0, 0, 0}}
330+};
331+
332+static int get_geometry(int dev_fd, uint64_t totalbytes, struct hd_geometry *geo)
333+{
334+ struct floppy_struct fd_str;
335+ struct loop_info li;
336+ struct loop_info64 li64;
337+ const struct geometry_table *gp;
338+ int rv = 0;
339+
340+ memset(geo, 0, sizeof *geo);
341+
342+ if (!ioctl(dev_fd, HDIO_GETGEO, geo)) {
343+ goto ok;
344+ } else if (!ioctl(dev_fd, FDGETPRM, &fd_str)) {
345+ geo->heads = fd_str.head;
346+ geo->sectors = fd_str.sect;
347+ geo->cylinders = fd_str.track;
348+ geo->start = 0;
349+ goto ok;
350+ }
351+
352+ /* Didn't work. Let's see if this is one of the standard geometries */
353+ for (gp = standard_geometries; gp->bytes; gp++) {
354+ if (gp->bytes == totalbytes) {
355+ memcpy(geo, &gp->g, sizeof *geo);
356+ goto ok;
357+ }
358+ }
359+
360+ /* Didn't work either... assign a geometry of 64 heads, 32 sectors; this is
361+ what zipdisks use, so this would help if someone has a USB key that
362+ they're booting in USB-ZIP mode. */
363+
364+ geo->heads = opt.heads ? : 64;
365+ geo->sectors = opt.sectors ? : 32;
366+ geo->cylinders = totalbytes / (geo->heads * geo->sectors << SECTOR_SHIFT);
367+ geo->start = 0;
368+
369+ if (!opt.sectors && !opt.heads) {
370+ fprintf(stderr,
371+ "Warning: unable to obtain device geometry (defaulting to %d heads, %d sectors)\n"
372+ " (on hard disks, this is usually harmless.)\n",
373+ geo->heads, geo->sectors);
374+ rv = 1; /* Suboptimal result */
375+ }
376+
377+ok:
378+ /* If this is a loopback device, try to set the start */
379+ if (!ioctl(dev_fd, LOOP_GET_STATUS64, &li64))
380+ geo->start = li64.lo_offset >> SECTOR_SHIFT;
381+ else if (!ioctl(dev_fd, LOOP_GET_STATUS, &li))
382+ geo->start = (unsigned int)li.lo_offset >> SECTOR_SHIFT;
383+ else if (!sysfs_get_offset(dev_fd, &geo->start)) {
384+ /* OK */
385+ }
386+
387+ return rv;
388+}
389+
390+
391 /* Patch syslinux_bootsect */
392 void syslinux_patch_bootsect(int dev_fd)
393 {
394+ uint64_t totalbytes, totalsectors;
395+ struct hd_geometry geo;
396+ struct fat_boot_sector *sbs;
397+
398+ totalbytes = get_size(dev_fd);
399+ get_geometry(dev_fd, totalbytes, &geo);
400+
401+ if (opt.heads)
402+ geo.heads = opt.heads;
403+ if (opt.sectors)
404+ geo.sectors = opt.sectors;
405+
406+ /* Patch this into a fake FAT superblock. This isn't because
407+ FAT is a good format in any way, it's because it lets the
408+ early bootstrap share code with the FAT version. */
409+ sbs = (struct fat_boot_sector *)syslinux_bootsect;
410+
411+ totalsectors = totalbytes >> SECTOR_SHIFT;
412+ if (totalsectors >= 65536) {
413+ set_16(&sbs->bsSectors, 0);
414+ } else {
415+ set_16(&sbs->bsSectors, totalsectors);
416+ }
417+ set_32(&sbs->bsHugeSectors, totalsectors);
418+
419+ set_16(&sbs->bsBytesPerSec, SECTOR_SIZE);
420+ set_16(&sbs->bsSecPerTrack, geo.sectors);
421+ set_16(&sbs->bsHeads, geo.heads);
422+ set_32(&sbs->bsHiddenSecs, geo.start);
423 }
424
425--
4261.9.1
427
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