Android: inital porting of libefivar

The static library is linked by efibootmgr.

Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>

Define strdupa if it is not defined

Android does not include strdupa in <string.h>. Define strdupa if it has
not already been defined.

Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>

linux-pci-root: remove an unused assignment

scan-build gripes about this, and it's pointless, so it can go.

Signed-off-by: Peter Jones <pjones@redhat.com>

dp.h: make format_guid() handle misaligned guid pointers safely.

GCC 9 adds -Werror=address-of-packed-member, which causes us to see the
build error reported at
 https://bugzilla.opensuse.org/show_bug.cgi?id=1120862 .

That bug report shows us the following:

In file included from dp.c:26:
dp.h: In function 'format_vendor_helper':
dp.h:120:37: error: taking address of packed member of 'struct <anonymous>' may result in an unaligned pointer value [-Werror=address-of-packed-member]
  120 |  format_guid(buf, size, off, label, &dp->hw_vendor.vendor_guid);
      |                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~
dp.h:74:25: note: in definition of macro 'format_guid'
   74 |   _rc = efi_guid_to_str(guid, &_guidstr);   \
      |                         ^~~~
cc1: all warnings being treated as errors

This patch makes format_guid() use a local variable as a bounce buffer
in the case that the guid we're passed is aligned as chaotic neutral.

Note that this only fixes this instance and there may be others that bz
didn't show because it exited too soon, and I don't have a gcc 9 build
in front of me right now.

Signed-off-by: Peter Jones <pjones@redhat.com>

util.h: add unlikely() and likely() macros

Signed-off-by: Peter Jones <pjones@redhat.com>

Bump version to 37

- Minor coverity fixes
- Improve ACPI device path formatting
- Add support for SOC devices that use FDT as their PCI root node
- Make devices we can't parse the "device" sysfs link for use DEV_ABBREV_ONLY
- Handle SCSI port numbers better
- Don't require an EUI for NVMe
- Fix the accidental requirement on ACPI UID nodes existing
- Add support for EMMC devices
- Add support for PCI root nodes without a device link in sysfs
- Add support for partitioned MD devices
- Fix partition number detection when the number isn't provided
- Add support for ACPI Generic Container and Embedded Controller root nodes
- Add limited support for SAS/SATA port expanders

Signed-off-by: Peter Jones <pjones@redhat.com>

Workaround libabigail weirness.

As per usual, two runs of libabigail produce two different results :/

This removes the extra set of arguments it generated from
efidp_make_file() in efivar-36, because abicheck is complaining about
them going away, even though they're duplicates *and* other functions
have the same problem in the .abixml file.

I really wish this worked better.

Signed-off-by: Peter Jones <pjones@redhat.com>

Update abixml for newer libabigail

This is the xml files for the "36" tag, updated with libabigail-1.4-2.fc29.x86_64

Signed-off-by: Peter Jones <pjones@redhat.com>

sas: handle port expanders at all.

Signed-off-by: Peter Jones <pjones@redhat.com>

pci-root: actually create the device path node.

Signed-off-by: Peter Jones <pjones@redhat.com>

Support decoding ACPI Generic Container and Embedded Controller dp nodes

Signed-off-by: Peter Jones <pjones@redhat.com>

dp-acpi: fix HID vs HID_EX formatting bug.

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix partition number detection when it's not provided.

We need to actually get the partition number from the child device when
we're called without it.

Resolves: rhbz#1616305

Signed-off-by: Peter Jones <pjones@redhat.com>

Handle partition name parsing and formatting for partitioned md.

Signed-off-by: Peter Jones <pjones@redhat.com>

Deal with devices that don't have a ->device link in sysfs

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix dev->probes intialization test

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix another buggy fake acpi pci root driver

In this case, the platform driver that creates the PCI(e) root device
doesn't fill in its driver link, so we can't look up what driver is in
use - but since it's the root, it *really* doesn't matter.  And in
general, we only really care if it's the last node in our path, because
that'll be the controller for the boot device anyway.

Signed-off-by: Peter Jones <pjones@redhat.com>

linux-emmc: update for internal API breakage.

Alek wrote his code before I made debug() imply LOG_DEBUG, so we need to
change that here as well.

Signed-off-by: Peter Jones <pjones@redhat.com>

Update abidw for newer tools.

Signed-off-by: Peter Jones <pjones@redhat.com>

abignore: work around an abidw bug

Some versions of abignore mistakenly treat brackets as section headers,
thus ignoring the rest of the stanza after them.  It's fixed upstream,
but I don't have the newer version yet.  Moving the braces to be after
the change-kind and other things works around the issue.

Signed-off-by: Peter Jones <pjones@redhat.com>

emmc_parser: add emmc_parser

Signed-off-by: Alek Du <alek.du@intel.com>

makeguids: initialize memory

so that we do not write uninitialized memory into guids.bin and names.bin
which made the resulting libefivar.so.1.36 unreproducible.
See https://reproducible-builds.org/ for why this matters.

Don't require NVME to have an EUI

Resolves: rhbz#1593784

Signed-off-by: Peter Jones <pjones@redhat.com>

Coverity still doesn't believe in error codes...

So also test fbuf here.

Signed-off-by: Peter Jones <pjones@redhat.com>

efiboot: parse_scsi_link(): fix the offset searching for the port

Signed-off-by: Peter Jones <pjones@redhat.com>

efiboot: fix a bad error check

Signed-off-by: Peter Jones <pjones@redhat.com>

efiboot: don't error on unknown type with DEV_ABBREV_ONLY

Signed-off-by: Peter Jones <pjones@redhat.com>

efiboot: Make the device node skipping code pass coverity.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make the debug() code less intrusive

Signed-off-by: Peter Jones <pjones@redhat.com>

Try even harder to convince coverity that get_file isn't leaking memory...

Signed-off-by: Peter Jones <pjones@redhat.com>

Pacify clang analyzer just a little.

Signed-off-by: Peter Jones <pjones@redhat.com>

If we can't parse part of the device link, skip it and set DEV_ABBREV_ONLY

If we can't parse some part of the device symlink, we can't write a full
device path, but we can write an abbreviated HD() or File() path.  So if
we've exausted all possibilities, skip to the next node, set
DEV_ABBREV_ONLY in the device's flags, and try parsing again.  Then when
creator.c checks if that flag conflicts, it'll throw an error if it
does.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make a linux device root for SOC devices that use FDT.

Add parsing for FDT devices in sysfs.  These devices have to use HD() or
File() because we don't have a way to express FDT nodes in a Device
Path.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make a way to say "-e 3" isn't viable for a kind of device.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make a platform ACPI root parser separate from PCI roots.

Because apparently PNP0A03 and PNP0A0C weren't good enough.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move ACPI ID parsing to a shared location.

This is getting out of PCI because we have some other platforms that do
ACPI root parsing, but don't use the PCI roots.

Signed-off-by: Peter Jones <pjones@redhat.com>

Give linux-*'s ->parse() functions the unmodified device link as well

Signed-off-by: Peter Jones <pjones@redhat.com>

Improve ACPI device path formatting

This factors a bunch of the duplication out to another function, which
also does a better job of it.

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix a makeguids building problem with generics.h.

Guard generics.h with EFIVAR_BUILD_ENVIRONMENT to keep it from
interfering with the makeguids build if libefivar.so isn't around
already.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make path-helpers.c also import fix_coverity.h

Signed-off-by: Peter Jones <pjones@redhat.com>

Make efidp_make_file() have even more, better input constraints.

This is all in the effort to convince coverity that it doesn't
dereference buf when size==0, which it already doesn't.

Signed-off-by: Peter Jones <pjones@redhat.com>

Try to convince covscan that sysfs_read_file() doesn't leak on error.

Basically, covscan gets confused about some of our return paths and
doesn't  think the error condition correlates with not having allocated
(or having freed) the ram we're using to pass the file data back.

Signed-off-by: Peter Jones <pjones@redhat.com>

Promote _make_hd_dn() to make_hd_dn() and get rid of the wrapper.

The wrapper is just hiding what the code's doing, and all the other code
around where we use it does the same thing anyway.  This hopefully
convinces coverity we're not really dereferencing "buf" there unless
it's nonzero.

Signed-off-by: Peter Jones <pjones@redhat.com>

efivar: Fix some types in -L behavior to pacify coverity.

Coverity doesn't realize that efi_well_known_guids is /actually/ an
array, because we didn't tell it so.  So fix the declaration so we've
told it so.

Signed-off-by: Peter Jones <pjones@redhat.com>

Pacify some coverity nits.

Coverity has trouble tracking data flow sometimes, and believes that
sysfs_readlink() and read_sysfs_file() will sometimes return >= 0 when
the buffer has not been filled out.  This changes the check to also test
for a NULL pointer, hopefully pacifying it.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move verbosity headers to be public

Signed-off-by: Peter Jones <pjones@redhat.com>

Move the syntastic file I use out of the repo

Signed-off-by: Peter Jones <pjones@redhat.com>

Bump version to 36

- Add NVDIMM support
- Re-written linux interface parser to handle how devices are
  partitioned better, and for cleaner code, with one file per device
  type.
- lots of verbosity updates
- better CI
- analysis with clang's analyzer as well as coverity
- Better handling of immutable bits in sysfs
- LIBEFIVAR_OPS=help
- lots of code cleanups.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make ccc-analyzer get clang cflags

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix some errors scan-build found.

This fixes a couple of failures to check for NULL in string parsing, and
one failure to free a value in an error path.

Signed-off-by: Peter Jones <pjones@redhat.com>

nvdimm: Use the namespace guid, not just the device guid

This makes long-form device paths for nvdimm be:

NVDIMM(pmem-namespace-guid)/NVDIMM(pmem-label-guid)/HD(...)/File(...)

It also conditionally removes our UUID swizzling, because nobody can
figure out what the correct encoding is, and only byteswaps if
LIBEFIBOOT_SWIZZLE_PMEM_UUID is set (to any value) in the environment.

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix an edge case in finding the sysfs driver link

Signed-off-by: Peter Jones <pjones@redhat.com>

Use the pci node's driver link to detect ATA in some cases

efivarfs: fix some minor immutability bugs

Signed-off-by: Peter Jones <pjones@redhat.com>

Expand tabs on the rest of linux.c

Signed-off-by: Peter Jones <pjones@redhat.com>

Always build the .so.1 local symlink

Signed-off-by: Peter Jones <pjones@redhat.com>

audit efi_error() for wrong newlines.

Signed-off-by: Peter Jones <pjones@redhat.com>

Update our abixml files for new ABI bits and minor changes.

Currently abidiff notices the following:

abidiff \
--suppr abignore \
--headers-dir2 /home/pjones/devel/github.com/efivar/master/src/include/efivar/ \
libefivar.abixml \
libefivar.so
Functions changes summary: 0 Removed, 1 Changed, 3 Added functions
Variables changes summary: 0 Removed, 0 Changed, 0 Added variable

3 Added functions:

  'function FILE* efi_get_logfile()'    {efi_get_logfile@@LIBEFIVAR_1.36}
  'function int efi_get_verbose()'    {efi_get_verbose@@LIBEFIVAR_1.36}
  'function void efi_set_verbose(int, FILE*)'    {efi_set_verbose@@LIBEFIVAR_1.36}

1 function with some indirect sub-type change:

  [C]'function ssize_t efidp_make_acpi_hid_ex(uint8_t*, ssize_t, uint32_t, uint32_t, uint32_t, char*, char*, char*)' at <built-in>:263:1 has some indirect sub-type changes:
    parameter 6 of type 'char*' changed:
      in pointed to type 'char':
        entity changed from 'char' to 'const char'
        type size hasn't changed
    parameter 7 of type 'char*' changed:
      in pointed to type 'char':
        entity changed from 'char' to 'const char'
        type size hasn't changed
    parameter 8 of type 'char*' changed:
      in pointed to type 'char':
        entity changed from 'char' to 'const char'
        type size hasn't changed

The 3 added functions are as they should be.  The
efidp_make_acpi_hid_ex() changes are all from making arguments "const"
that weren't before, and that's fine as well.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add a make target to rebuild our abidw .abixml files

Signed-off-by: Peter Jones <pjones@redhat.com>

Rebuild efivar-35's abixml files with newer abidw.

abidiff is not that good at recognizing its own format changes, so if we
just do the normal abicheck we get a lot of:

  [C]'function ssize_t efidp_make_atapi(uint8_t*, ssize_t, uint16_t, uint16_t, uint16_t)' has some indirect sub-type changes:
    parameter 6 of type 'uint8_t*' was added
    parameter 7 of type 'typedef ssize_t' was added
    parameter 8 of type 'typedef uint16_t' was added
    parameter 9 of type 'typedef uint16_t' was added
    parameter 10 of type 'typedef uint16_t' was added

Which is obviously just plain wrong (efidp_make_atapi()'s arguments have
not changed at all, and it still has only 5 of them.)

So the answer is to re-build efivar-35's .abixml files with newer abidw,
and *then* do abicheck.

Signed-off-by: Peter Jones <pjones@redhat.com>

libefiboot: make everything use "struct device" and kill "struct disk_info"

Signed-off-by: Peter Jones <pjones@redhat.com>

linux.h: Make some decls HIDDEN as they should be

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix decl for get_sector_size()

Signed-off-by: Peter Jones <pjones@redhat.com>

Constify efidp_make_acpi_hid_ex() args and make its prototype more readible

Signed-off-by: Peter Jones <pjones@redhat.com>

Move the PMEM device parser to linux-pmem.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add a PCI parser that's independent of the other stuff.

This doesn't actually remove the old one, but a later patch will when
it's replacing all that stuff.

This won't actually *work* yet, either, because the infrastructure to
use it (replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move SAS parsing to linux-sas.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move SATA parsing to linux-sata.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move nvme parsing to linux-nvme.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move virtblk device parsing to linux-virtblk.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move i2o device parsing to linux-i2o.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move traditional SCSI parsing to linux-scsi.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Move ATA parsing to linux-ata.c

This won't actually *work* yet, because the infrastructure to use it
(replacing "struct disk_info") won't land for a few more patches.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add a (not great) macro to print parser debugging arrows.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add "struct device" in preperation for removing "struct disk_info".

Also adds src/linux-*.c to the makefile

Signed-off-by: Peter Jones <pjones@redhat.com>

efi_loadopt_create(): add some debugging

Signed-off-by: Peter Jones <pjones@redhat.com>

ucs2.h: there's no reason ucs2_to_utf8 shouldn't malloc directly.

Signed-off-by: Peter Jones <pjones@redhat.com>

rename the pci_root_info fields to match the struct name

Signed-off-by: Peter Jones <pjones@redhat.com>

Move get_sector_size() to the linux specific code

Signed-off-by: Peter Jones <pjones@redhat.com>

linux.h: add some more sysfs helpers, and improve their error handling.

... this also moves them from util.h

Signed-off-by: Peter Jones <pjones@redhat.com>

More fixups for CONSTRUCTOR/DESTRUCTOR/HIDDEN/PUBLIC/etc.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add some helpers for file path mangling

Signed-off-by: Peter Jones <pjones@redhat.com>

util.h: Add error reporting in read_file()

Signed-off-by: Peter Jones <pjones@redhat.com>

Temporary hack in get_partition_number

This code has been wrong for a while, but it's getting removed, so
really don't bother *fixing* it so much as appeasing newer gcc's
noticing that it's uninitialized.

Signed-off-by: Peter Jones <pjones@redhat.com>

Make LIBEFIVAR_OPS=help work

Signed-off-by: Peter Jones <pjones@redhat.com>

Add some more debug facilities.

Signed-off-by: Peter Jones <pjones@redhat.com>

Add hexdumper

Make all of our Make.* files have vim:ft=make

... except Make.version because it's fully automated.

Signed-off-by: Peter Jones <pjones@redhat.com>

fix some dumb stuff in 'make install' targets

Signed-off-by: Peter Jones <pjones@redhat.com>

gpt.h: minor cleanups (mostly formatting/whitespace)

Signed-off-by: Peter Jones <pjones@redhat.com>

get_partition_info(): fix the return code error path.

Half the code thinks >= 0 is success, half the code things <= 0 is
success...

Signed-off-by: Peter Jones <pjones@redhat.com>

clang: ?e64_to_cpu() and cpu_to_?e64(): cast to uint64_t.

On x86_64, clang makes __builtin_bswap64() return "unsigned long"
instead of "unsigned long long", so using PRIx64 complains all over the
place.  Casting to uint64_t satisfies both compilers.

Signed-off-by: Peter Jones <pjones@redhat.com>

More aggressively use macros for compiler attributes

Signed-off-by: Peter Jones <pjones@redhat.com>

Simplify our include files

Make everything just include src/efivar.h or src/efiboot.h, and let
those sort out the correct things to include.

Signed-off-by: Peter Jones <pjones@redhat.com>

util.h: whitespace cleanup

Signed-off-by: Peter Jones <pjones@redhat.com>

gpt: get rid of ad-hoc warning reporting; use efi_error()

Signed-off-by: Peter Jones <pjones@redhat.com>

gpt: don't use the __ versions of cpu_to_le??()/le??_to_cpu()

Signed-off-by: Peter Jones <pjones@redhat.com>

efivar: fix efi_well_known_guids and efi_well_known_guids_end definitions

From github:

build command: make CROSS_COMPILE=aarch64-linux-gnu- prefix=/home/b58867/Desktop/ls1043ardb/efivar/efivar_arm64 static

compilation error:
aarch64-linux-gnu-gcc -O2 -flto -g3 -I/home/b58867/Desktop/ls1043ardb/efivar/src/include/ -specs=/home/b58867/Desktop/ls1043ardb/efivar/gcc.specs -L. -Wl,-z,muldefs -static -o efivar-static efivar.c dp.static.o dp-acpi.static.o dp-hw.static.o dp-media.static.o dp-message.static.o efivarfs.static.o error.static.o export.static.o guid.static.o guids.static.o guid-symbols.static.o lib.static.o vars.static.o -ldl
guid.c:112:24: error: type of ‘efi_well_known_guids_end’ does not match original declaration [-Werror]
extern struct guidname efi_well_known_guids_end
^
efivar.c:490:28: note: previously declared here
extern struct guidname *efi_well_known_guids_end;
^
efivar.c:489:27: error: type of ‘efi_well_known_guids’ does not match original declaration [-Werror]
extern struct guidname efi_well_known_guids[];
^
guid.c:108:24: note: previously declared here
extern struct guidname efi_well_known_guids
^
lto1: all warnings being treated as errors
lto-wrapper: fatal error: aarch64-linux-gnu-gcc returned 1 exit status

Fixes github issue #102

Signed-off-by: Peter Jones <pjones@redhat.com>

Fix our pkg-config-ldflags invocation.

Signed-off-by: Peter Jones <pjones@redhat.com>

We don't use list.h at all; axe it.

Signed-off-by: Peter Jones <pjones@redhat.com>