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Use VersionNumber for detecting renameat2()

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This commit is contained in:
Azat Khuzhin 2021-06-09 02:40:39 +03:00
parent 1b5ca07ff4
commit 055e9d87f0
1 changed files with 5 additions and 17 deletions
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22
src/Common/renameat2.cpp
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@ -1,5 +1,7 @@
#include <Common/renameat2.h>
#include <Common/Exception.h>
#include <Common/VersionNumber.h>
#include <Poco/Environment.h>
#include <filesystem>
#if defined(linux) || defined(__linux) || defined(__linux__)
@ -7,7 +9,6 @@
#include <fcntl.h>
#include <sys/syscall.h>
#include <linux/fs.h>
#include <sys/utsname.h>
#endif
namespace fs = std::filesystem;
@ -27,22 +28,9 @@ namespace ErrorCodes
static bool supportsRenameat2Impl()
{
#if defined(__NR_renameat2)
/// renameat2 is available in linux since 3.15
struct utsname sysinfo;
if (uname(&sysinfo))
return false;
char * point = nullptr;
auto v_major = strtol(sysinfo.release, &point, 10);
errno = 0;
if (errno || *point != '.' || v_major < 3)
return false;
if (3 < v_major)
return true;
errno = 0;
auto v_minor = strtol(point + 1, nullptr, 10);
return !errno && 15 <= v_minor;
DB::VersionNumber renameat2_minimal_version(3, 15, 0);
DB::VersionNumber linux_version(Poco::Environment::osVersion(), /* strict= */ false);
return linux_version >= renameat2_minimal_version;
#else
return false;
#endif