Displaying 11 results from an estimated 11 matches for "efi_crc32".
2019 Feb 19
0
[PATCH nbdkit 1/4] common: Move some GPT functionality to a common directory.
...abac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+ 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+ 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+ 0x2d02ef8dL
+ };
+
+/* Return a 32-bit CRC of the contents of the buffer. */
+
+static uint32_t
+_efi_crc32 (const void *buf, size_t len, uint32_t seed)
+{
+ size_t i;
+ uint32_t crc32val;
+ const unsigned char *s = buf;
+
+ crc32val = seed;
+ for (i = 0; i < len; i++) {
+ crc32val =
+ crc32_tab[(crc32val ^ s[i]) & 0xff] ^
+ (crc32val >> 8);
+ }
+ return crc32val;
+}
+...
2019 Jan 02
0
[PATCH nbdkit v2 1/2] Annotate internal function parameters with attribute((nonnull)).
...)));
#endif /* NBDKIT_VIRTUAL_FLOPPY_H */
diff --git a/plugins/partitioning/efi-crc32.h b/plugins/partitioning/efi-crc32.h
index 76f5a6a..21e28d7 100644
--- a/plugins/partitioning/efi-crc32.h
+++ b/plugins/partitioning/efi-crc32.h
@@ -36,6 +36,7 @@
#include <stdint.h>
-extern uint32_t efi_crc32 (const void *buf, size_t len);
+extern uint32_t efi_crc32 (const void *buf, size_t len)
+ __attribute__((__nonnull__ (1)));
#endif /* NBDKIT_EFI_CRC32_H */
diff --git a/plugins/partitioning/virtual-disk.h b/plugins/partitioning/virtual-disk.h
index da846f5..3860f46 100644
--- a/plugins/partitio...
2019 Feb 22
5
[PATCH nbdkit v3 0/4] Add linuxdisk plugin.
For v3 I reimplemented this using mke2fs -d. This obviously makes the
implementation a whole lot simpler, but cannot support multiple
directory merging.
Patches 1-3 are the same as before. I've also reproduced the notes
from v2 below.
v2:
- Fix inconsistent tab/space.
- All 3 plugins now contain a block of text pointing to the
other 2 plugins.
- TMDIR -> TMPDIR
- Unlink the
2019 Jan 02
4
[PATCH nbdkit v2 0/2] Use of attribute(()).
v1 was here:
https://www.redhat.com/archives/libguestfs/2019-January/msg00008.html
In v2 I have provided two patches:
The first patch extends attribute((nonnull)) to most internal
functions, but not to the external API.
The second patch uses a macro so that attribute((format)) is only used
in the public API on GCC or Clang. At least in theory these headers
could be used by a C compiler which
2019 Feb 19
6
[PATCH nbdkit v2 0/5] Add linuxdisk plugin.
Another interesting thing you can do with this plugin:
https://rwmj.wordpress.com/2019/02/19/nbdkit-linuxdisk-plugin/
v2:
- Fix inconsistent tab/space.
- All 3 plugins now contain a block of text pointing to the
other 2 plugins.
- TMDIR -> TMPDIR
- Unlink the temporary file and other cleanups along error paths.
- fclose -> pclose, and check the return value for errors.
-
2019 Feb 19
7
[PATCH nbdkit 0/4] New plugin: Add linuxdisk plugin.
Turns out Japanese trains are good for coding!
In supermin we have a bunch of code to create the libguestfs
appliance. It creates it directly using libext2fs (part of
e2fsprogs). We can use the same technique to create ext2 virtual
disks in nbdkit, which is what this new plugin does. Why a new plugin
instead of modifying the floppy plugin? See the 4/4 commit message
for an explanation.
The
2018 Sep 17
0
[PATCH nbdkit v3 3/3] Add partitioning plugin.
...cabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+ 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+ 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+ 0x2d02ef8dL
+ };
+
+/* Return a 32-bit CRC of the contents of the buffer. */
+
+static uint32_t
+efi_crc32 (const void *buf, size_t len, uint32_t seed)
+{
+ size_t i;
+ uint32_t crc32val;
+ const unsigned char *s = buf;
+
+ crc32val = seed;
+ for (i = 0; i < len; i++) {
+ crc32val =
+ crc32_tab[(crc32val ^ s[i]) & 0xff] ^
+ (crc32val >> 8);
+ }
+ return crc32val;
+}
+...
2019 Feb 22
0
[PATCH nbdkit v3 4/4] Add linuxdisk plugin.
...header->partition_entries_lba = htole64 (2);
+ else
+ header->partition_entries_lba = htole64 (nr_lbas - 33);
+ header->nr_partition_entries = htole32 (GPT_MIN_PARTITIONS);
+ header->size_partition_entry = htole32 (GPT_PT_ENTRY_SIZE);
+ header->crc_partitions =
+ htole32 (efi_crc32 (pt, GPT_PT_ENTRY_SIZE * GPT_MIN_PARTITIONS));
+
+ /* Must be computed last. */
+ header->crc = htole32 (efi_crc32 (header, sizeof *header));
+}
+
+static void
+create_gpt_partition_table_entry (const struct region *region,
+ bool bootable,
+...
2018 Sep 17
4
[PATCH nbdkit 0/3] Add partitioning plugin.
nbdkit partitioning boot.img swap.img root.img
... creates a virtual disk by adding a partition table.
In ancient times Xen used to do this.
Rich.
2018 Sep 17
7
[PATCH nbdkit v3 0/3] Add partitioning plugin.
The partitioning plugin patch is the same (except for rebasing).
However I have changed the first two patches based on feedback
received. In particular this fixes a very serious bug found by Eric
Blake in the current truncate filter.
Rich.
2019 Feb 19
0
[PATCH nbdkit 4/4] Add linuxdisk plugin.
...header->partition_entries_lba = htole64 (2);
+ else
+ header->partition_entries_lba = htole64 (nr_lbas - 33);
+ header->nr_partition_entries = htole32 (GPT_MIN_PARTITIONS);
+ header->size_partition_entry = htole32 (GPT_PT_ENTRY_SIZE);
+ header->crc_partitions =
+ htole32 (efi_crc32 (pt, GPT_PT_ENTRY_SIZE * GPT_MIN_PARTITIONS));
+
+ /* Must be computed last. */
+ header->crc = htole32 (efi_crc32 (header, sizeof *header));
+}
+
+static void
+create_gpt_partition_table_entry (const struct region *region,
+ bool bootable,
+...