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util: Support checking for kernel versions.

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Extract checking for a given kernel version to a separate function.
It will be used also in the next patch.

Acked-by: Mike Pattrick <mkp@redhat.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Felix Huettner <felix.huettner@mail.schwarz>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Felix Huettner
2024-03-11 14:15:47 +01:00
committed by Ilya Maximets
parent b5e6829254
commit 6439d694ae
3 changed files with 34 additions and 12 deletions
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27
lib/util.c
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@@ -27,6 +27,7 @@
#include <string.h>
#ifdef __linux__
#include <sys/prctl.h>
#include <sys/utsname.h>
#endif
#include <sys/stat.h>
#include <unistd.h>
@@ -2500,3 +2501,29 @@ OVS_CONSTRUCTOR(winsock_start) {
}
}
#endif
#ifdef __linux__
bool
ovs_kernel_is_version_or_newer(int target_major, int target_minor)
{
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
static int current_major, current_minor = -1;
if (ovsthread_once_start(&once)) {
struct utsname utsname;
if (uname(&utsname) == -1) {
VLOG_WARN("uname failed (%s)", ovs_strerror(errno));
} else if (!ovs_scan(utsname.release, "%d.%d",
&current_major, &current_minor)) {
VLOG_WARN("uname reported bad OS release (%s)", utsname.release);
}
ovsthread_once_done(&once);
}
if (current_major == -1 || current_minor == -1) {
return false;
}
return current_major > target_major || (
current_major == target_major && current_minor >= target_minor);
}
#endif