From ac402e749c91d40ce7066993f72f426b67196bd7 Mon Sep 17 00:00:00 2001
From: "W. J. van der Laan" <laanwj@protonmail.com>
Date: Tue, 5 Oct 2021 19:36:20 +0200
Subject: util: Conditionalize some syscalls in syscall name table

Put these in `#ifdef` as they are newer syscalls that might not be
defined on all kernels:

     __NR_pkey_alloc
     __NR_pkey_free
     __NR_pkey_mprotect
     __NR_preadv2
     __NR_pwritev2

Thanks to jamesob for reporting.
---
 src/util/syscall_sandbox.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/util')

diff --git a/src/util/syscall_sandbox.cpp b/src/util/syscall_sandbox.cpp
index 2b6a2dd14a..0380d39675 100644
--- a/src/util/syscall_sandbox.cpp
+++ b/src/util/syscall_sandbox.cpp
@@ -272,15 +272,23 @@ const std::map<uint32_t, std::string> LINUX_SYSCALLS{
     {__NR_pipe, "pipe"},
     {__NR_pipe2, "pipe2"},
     {__NR_pivot_root, "pivot_root"},
+#ifdef __NR_pkey_alloc
     {__NR_pkey_alloc, "pkey_alloc"},
+#endif
+#ifdef __NR_pkey_free
     {__NR_pkey_free, "pkey_free"},
+#endif
+#ifdef __NR_pkey_mprotect
     {__NR_pkey_mprotect, "pkey_mprotect"},
+#endif
     {__NR_poll, "poll"},
     {__NR_ppoll, "ppoll"},
     {__NR_prctl, "prctl"},
     {__NR_pread64, "pread64"},
     {__NR_preadv, "preadv"},
+#ifdef __NR_preadv2
     {__NR_preadv2, "preadv2"},
+#endif
     {__NR_prlimit64, "prlimit64"},
     {__NR_process_vm_readv, "process_vm_readv"},
     {__NR_process_vm_writev, "process_vm_writev"},
@@ -289,7 +297,9 @@ const std::map<uint32_t, std::string> LINUX_SYSCALLS{
     {__NR_putpmsg, "putpmsg"},
     {__NR_pwrite64, "pwrite64"},
     {__NR_pwritev, "pwritev"},
+#ifdef __NR_pwritev2
     {__NR_pwritev2, "pwritev2"},
+#endif
     {__NR_query_module, "query_module"},
     {__NR_quotactl, "quotactl"},
     {__NR_read, "read"},
-- 
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