[PATCH v12 net-next 02/11] bpf: enable bpf syscall on x64 and i386
From: Alexei Starovoitov <hidden>
Date: 2014-09-15 19:22:29
Also in:
linux-api, lkml
Subsystem:
abi/api, generic include/asm header files, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Arnd Bergmann, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
done as separate commit to ease conflict resolution Signed-off-by: Alexei Starovoitov <redacted> --- arch/x86/syscalls/syscall_32.tbl | 1 + arch/x86/syscalls/syscall_64.tbl | 1 + include/linux/syscalls.h | 3 ++- include/uapi/asm-generic/unistd.h | 4 +++- kernel/sys_ni.c | 3 +++ 5 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
index 028b78168d85..9fe1b5d002f0 100644
--- a/arch/x86/syscalls/syscall_32.tbl
+++ b/arch/x86/syscalls/syscall_32.tbl@@ -363,3 +363,4 @@ 354 i386 seccomp sys_seccomp 355 i386 getrandom sys_getrandom 356 i386 memfd_create sys_memfd_create +357 i386 bpf sys_bpf
diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
index 35dd922727b9..281150b539a2 100644
--- a/arch/x86/syscalls/syscall_64.tbl
+++ b/arch/x86/syscalls/syscall_64.tbl@@ -327,6 +327,7 @@ 318 common getrandom sys_getrandom 319 common memfd_create sys_memfd_create 320 common kexec_file_load sys_kexec_file_load +321 common bpf sys_bpf # # x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 0f86d85a9ce4..bda9b81357cc 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h@@ -65,6 +65,7 @@ struct old_linux_dirent; struct perf_event_attr; struct file_handle; struct sigaltstack; +union bpf_attr; #include <linux/types.h> #include <linux/aio_abi.h>
@@ -875,5 +876,5 @@ asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, const char __user *uargs); asmlinkage long sys_getrandom(char __user *buf, size_t count, unsigned int flags); - +asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); #endif
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 11d11bc5c78f..22749c134117 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h@@ -705,9 +705,11 @@ __SYSCALL(__NR_seccomp, sys_seccomp) __SYSCALL(__NR_getrandom, sys_getrandom) #define __NR_memfd_create 279 __SYSCALL(__NR_memfd_create, sys_memfd_create) +#define __NR_bpf 280 +__SYSCALL(__NR_bpf, sys_bpf) #undef __NR_syscalls -#define __NR_syscalls 280 +#define __NR_syscalls 281 /* * All syscalls below here should go away really,
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 391d4ddb6f4b..b4b5083f5f5e 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c@@ -218,3 +218,6 @@ cond_syscall(sys_kcmp); /* operate on Secure Computing state */ cond_syscall(sys_seccomp); + +/* access BPF programs and maps */ +cond_syscall(sys_bpf);
--
1.7.9.5