diff mbox series

[RFC,bpf-next,01/13] fork: New clone3 flag for BPF namespace

Message ID 20230326092208.13613-2-laoar.shao@gmail.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series bpf: Introduce BPF namespace | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next-VM_Test-1 success Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-7 success Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-2 success Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-3 success Logs for build for aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-5 success Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-6 success Logs for build for x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-4 success Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-8 fail Logs for test_maps on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-9 fail Logs for test_maps on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-10 pending Logs for test_maps on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-11 fail Logs for test_maps on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-12 fail Logs for test_maps on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-13 fail Logs for test_progs on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-14 fail Logs for test_progs on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-16 fail Logs for test_progs on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-17 fail Logs for test_progs on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-18 fail Logs for test_progs_no_alu32 on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-19 fail Logs for test_progs_no_alu32 on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-21 fail Logs for test_progs_no_alu32 on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-22 fail Logs for test_progs_no_alu32 on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-23 success Logs for test_progs_no_alu32_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-24 success Logs for test_progs_no_alu32_parallel on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-25 success Logs for test_progs_no_alu32_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-26 success Logs for test_progs_no_alu32_parallel on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-27 success Logs for test_progs_parallel on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-28 success Logs for test_progs_parallel on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-29 success Logs for test_progs_parallel on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-30 success Logs for test_progs_parallel on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-31 fail Logs for test_verifier on aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-32 fail Logs for test_verifier on aarch64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-34 fail Logs for test_verifier on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-35 fail Logs for test_verifier on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-33 success Logs for test_verifier on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-20 fail Logs for test_progs_no_alu32 on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-15 fail Logs for test_progs on s390x with gcc
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 18487 this patch: 18487
netdev/cc_maintainers fail 13 maintainers not CCed: bsegall@google.com mgorman@suse.de bristot@redhat.com mingo@redhat.com vschneid@redhat.com peterz@infradead.org Liam.Howlett@Oracle.com brauner@kernel.org vincent.guittot@linaro.org rostedt@goodmis.org dietmar.eggemann@arm.com juri.lelli@redhat.com akpm@linux-foundation.org
netdev/build_clang success Errors and warnings before: 3988 this patch: 3988
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 19434 this patch: 19434
netdev/checkpatch warning CHECK: spaces preferred around that '|' (ctx:VxV)
netdev/kdoc success Errors and warnings before: 8 this patch: 8
netdev/source_inline success Was 0 now: 0

Commit Message

Yafang Shao March 26, 2023, 9:21 a.m. UTC 
A new clone3 flag CLONE_NEWBPF is introduced to create a new BPF
namespace.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
---
 include/uapi/linux/sched.h | 1 +
 kernel/fork.c              | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/uapi/linux/sched.h b/include/uapi/linux/sched.h
index 3bac0a8..ace31df 100644
--- a/include/uapi/linux/sched.h
+++ b/include/uapi/linux/sched.h
@@ -36,6 +36,7 @@ 
 /* Flags for the clone3() syscall. */
 #define CLONE_CLEAR_SIGHAND 0x100000000ULL /* Clear any signal handler and reset to SIG_DFL. */
 #define CLONE_INTO_CGROUP 0x200000000ULL /* Clone into a specific cgroup given the right permissions. */
+#define CLONE_NEWBPF		0x400000000ULL /* New BPF namespace */
 
 /*
  * cloning flags intersect with CSIGNAL so can be used with unshare and clone3
diff --git a/kernel/fork.c b/kernel/fork.c
index f68954d..db0abd4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2929,7 +2929,8 @@  static bool clone3_args_valid(struct kernel_clone_args *kargs)
 {
 	/* Verify that no unknown flags are passed along. */
 	if (kargs->flags &
-	    ~(CLONE_LEGACY_FLAGS | CLONE_CLEAR_SIGHAND | CLONE_INTO_CGROUP))
+	    ~(CLONE_LEGACY_FLAGS | CLONE_CLEAR_SIGHAND | CLONE_INTO_CGROUP |
+		  CLONE_NEWBPF))
 		return false;
 
 	/*
@@ -3080,7 +3081,7 @@  static int check_unshare_flags(unsigned long unshare_flags)
 				CLONE_VM|CLONE_FILES|CLONE_SYSVSEM|
 				CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET|
 				CLONE_NEWUSER|CLONE_NEWPID|CLONE_NEWCGROUP|
-				CLONE_NEWTIME))
+				CLONE_NEWTIME|CLONE_NEWBPF))
 		return -EINVAL;
 	/*
 	 * Not implemented, but pretend it works if there is nothing