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libpayload: bring in file attribute support from cbfstool

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This comes from cbfstool (GPL) into libpayload (BSD-l), but I could have
just as well written it in libpayload first.

Change-Id: I86baefe5c299125a4733fa20523efd5d06de7182
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/11675
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Patrick Georgi
2015-09-16 18:53:40 +02:00
committed by Patrick Georgi
parent 81a4c85acf
commit 377d1db57d
2 changed files with 66 additions and 1 deletions
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26
payloads/libpayload/include/cbfs_core.h
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@ -132,10 +132,34 @@ struct cbfs_file {
char magic[8];
uint32_t len;
uint32_t type;
uint32_t checksum;
uint32_t attributes_offset;
uint32_t offset;
char filename[];
} __attribute__((packed));
/* Depending on how the header was initialized, it may be backed with 0x00 or
* 0xff. Support both. */
#define CBFS_FILE_ATTR_TAG_UNUSED 0
#define CBFS_FILE_ATTR_TAG_UNUSED2 0xffffffff
/* The common fields of extended cbfs file attributes.
Attributes are expected to start with tag/len, then append their
specific fields. */
struct cbfs_file_attribute {
uint32_t tag;
/* len covers the whole structure, incl. tag and len */
uint32_t len;
uint8_t data[0];
} __attribute__((packed));
/* Given a cbfs_file, return the first file attribute, or NULL. */
struct cbfs_file_attribute *cbfs_file_first_attr(struct cbfs_file *file);
/* Given a cbfs_file and a cbfs_file_attribute, return the attribute that
* follows it, or NULL. */
struct cbfs_file_attribute *cbfs_file_next_attr(struct cbfs_file *file,
struct cbfs_file_attribute *attr);
/*** Component sub-headers ***/
/* Following are component sub-headers for the "standard"