[PATCH][procd] jail/seccomp: add support for loongarch64

[Weijie Gao]

Add support for loongarch64 in utrace and ujail.

Signed-off-by: Weijie Gao <hackpascal at gmail.com>
---
 jail/seccomp-bpf.h | 3 +++
 jail/seccomp-oci.c | 2 ++
 trace/trace.c      | 6 +++---
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/jail/seccomp-bpf.h b/jail/seccomp-bpf.h
index 077483f..e6384db 100644
--- a/jail/seccomp-bpf.h
+++ b/jail/seccomp-bpf.h
@@ -80,6 +80,9 @@ struct seccomp_data {
 #elif defined(__i386__)
 # define REG_SYSCALL	REG_EAX
 # define ARCH_NR	AUDIT_ARCH_I386
+#elif defined(__loongarch_lp64)
+# define REG_SYSCALL	regs[11]
+# define ARCH_NR	AUDIT_ARCH_LOONGARCH64
 #elif defined(__mips__)
 # define REG_SYSCALL	regs[2]
 # if __BYTE_ORDER == __LITTLE_ENDIAN
diff --git a/jail/seccomp-oci.c b/jail/seccomp-oci.c
index f089ac6..9ef43d1 100644
--- a/jail/seccomp-oci.c
+++ b/jail/seccomp-oci.c
@@ -119,6 +119,8 @@ static uint32_t resolve_architecture(char *archname)
 		return AUDIT_ARCH_ARM;
 	else if (!strcmp(archname, "SCMP_ARCH_AARCH64"))
 		return AUDIT_ARCH_AARCH64;
+	else if (!strcmp(archname, "SCMP_ARCH_LOONGARCH64"))
+		return AUDIT_ARCH_LOONGARCH64;
 	else if (!strcmp(archname, "SCMP_ARCH_MIPS"))
 		return AUDIT_ARCH_MIPS;
 	else if (!strcmp(archname, "SCMP_ARCH_MIPS64"))
diff --git a/trace/trace.c b/trace/trace.c
index e257d89..47c2fef 100644
--- a/trace/trace.c
+++ b/trace/trace.c
@@ -48,7 +48,7 @@
 #define _offsetof(a, b) __builtin_offsetof(a,b)
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 
-#if defined (__aarch64__)
+#if defined (__aarch64__) || defined(__loongarch_lp64)
 #include <linux/ptrace.h>
 #elif defined(__amd64__)
 #define reg_syscall_nr	_offsetof(struct user, regs.orig_rax)
@@ -226,7 +226,7 @@ static void tracer_cb(struct uloop_process *c, int ret)
 	if (WIFSTOPPED(ret) || (ret >> 16)) {
 		if (WSTOPSIG(ret) & 0x80) {
 			if (!tracee->in_syscall) {
-#ifdef __aarch64__
+#if defined(__aarch64__) || defined(__loongarch_lp64)
 				int syscall = -1;
 				struct ptrace_syscall_info ptsi = {.op=PTRACE_SYSCALL_INFO_ENTRY};
 				if (ptrace(PTRACE_GET_SYSCALL_INFO, c->pid, sizeof(ptsi), &ptsi) != -1)
@@ -260,7 +260,7 @@ static void tracer_cb(struct uloop_process *c, int ret)
 		} else if ((ret >> 16) == PTRACE_EVENT_STOP) {
 			/* Nothing special to do here */
 		} else if ((ret >> 8) == (SIGTRAP | (PTRACE_EVENT_SECCOMP << 8))) {
-#ifdef __aarch64__
+#if defined(__aarch64__) || defined(__loongarch_lp64)
 			int syscall = -1;
 			struct ptrace_syscall_info ptsi = {.op=PTRACE_SYSCALL_INFO_SECCOMP};
 			if (ptrace(PTRACE_GET_SYSCALL_INFO, c->pid, sizeof(ptsi), &ptsi) != -1)
-- 
2.43.0