iberpal-skeleton is constantly being updated, it may not be compatible with the previous images.

 Signed-off-by: Shirong Hao shirong@linux.alibaba.com

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

The new implementation introduces new object called Challenger
and the foundations for SGX EPID-based RA. In future, the object
called Attester will be added to complete the attestation package.
Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

rune/libenclave/skeleton && sgx-tools: Resolve the launch token adaptation problem on sgx2 + in-tree

- sgx-tools gen-token command reports an error when running on machine with FLC
- Operations related to lanunch token are not supported on machine with FLC

Signed-off-by: Shirong Hao shirong@linux.alibaba.com

Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Xfrm needs support the same xsave feature in encalve as in OS.
By cpuid, it can get the same value between xfrm and xcr0.
Signed-off-by: NLiang Yang <liang3.yang@intel.com>
Reviewed-by: Jia Zhang <zhang.jia@linux.alibaba.com>

Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Call ias.GetVerifiedReport service rather than ias.Verify service to
get IAS report in PAL attest
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

- Add Dragonwell and Skeleton images in reference container image
- Update Version number
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

- Update centos version from 7.5 to 8.1
- Update occlum version from 0.14.0 to 0.15.1
- Update the way to Install SGX SDK and SGX PSW
- Update tht value of ENCLAVE_RUNTIME_ARGS
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

The official psw installer from Intel doesn't create a symbol link libsgx_launch.so to libsgx_launch.so.1, leading to pal init failure.

Signed-off-by: Shirong Hao<shirong@linux.alibaba.com>

nanosleep() may return the remaining duration longer than
requested one due to timer slack.
Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: Nshirong <shirong@linux.alibaba.com>

skeleton_remote_attestation_with_rune.md.

Only `liberpal-skeleton-v3.so` supports `rune attest` command.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

1. Support PAL API V3.
2. Support `rune attest` command.
3. Add skeleton_remote_attestation_with_rune.md.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Load function has became unnecessary in the current design.
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Move the implementation of skeleton PAL V2 APIs from liberpal-skeleton-v2.c
to liberpal-skeleton.c
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Since the pal_create_process interface of PAI API v2 has achieved a similar function, fork-test argument is useless.
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

sgxsign now supports --product option to enable product enclave build and launch.
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

- Use liberpal-skeleton to replace liberpal-skeleton.so in README.
- Use liberpal-skeleton-v1.so to replace liberpal-skeleton.so in rune/libcontainer/specconv/example.go
- Use liberpal-skeleton*.so to repalce liberpal-skeleton.so in rune/Makefile and .gitignore
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Use liberpal-skeleton-v${SKELETON_PAL_VERSION}.so to replace liberpal-skeleton.so in README.
Signed-off-by: NYilin Li <YiLin.Li@linux.alibaba.com>

Reformat spec_v1.md and spec_v2.md
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

Leave v1 implementation in a separate file.
Signed-off-by: NShirong Hao <shirong@linux.alibaba.com>

This argument is used to test whether enclave share mapping between
parent and child process is usable.
Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

In the GNU C Library, "major" is defined by <sys/sysmacros.h> starting from glibc-2.25,
the macros major and minor are only available in <sys/sysmacros.h>. This fix is for historical compatibility.
Signed-off-by: NLiang Yang <liang3.yang@intel.com>

Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

There are still lots of SGX1 machines without FLC support deployed
in filed. These machines eventually needs to be migrated to be supported
by SGX in-tree driver which is product-ready and well-maintained.

This patch targets to address the gap between SGX1 machine and SGX
in-tree driver.
Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>

Signed-off-by: Jia Zhang <zhang.jia@linux.alibaba.com>