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Handle old kernels that don't do NETLINK_NO_ENOBUFS.

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Deal with both old kernel header files that don't define it,
and old kernels that don't implement it.

Also generalise Linux kernel version handling.
This commit is contained in:
Simon Kelley
2020-03-19 21:56:45 +00:00
parent e7ee1aa093
commit 0506a5ed4e
5 changed files with 40 additions and 20 deletions
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23
src/util.c
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@@ -30,6 +30,10 @@
#include <idna.h>
#endif
#ifdef HAVE_LINUX_NETWORK
#include <sys/utsname.h>
#endif
/* SURF random number generator */
static u32 seed[32];
@@ -782,3 +786,22 @@ int wildcard_matchn(const char* wildcard, const char* match, int num)
return (!num) || (*wildcard == *match);
}
#ifdef HAVE_LINUX_NETWORK
int kernel_version(void)
{
struct utsname utsname;
int version;
char *split;
if (uname(&utsname) < 0)
die(_("failed to find kernel version: %s"), NULL, EC_MISC);
split = strtok(utsname.release, ".");
version = (split ? atoi(split) : 0);
split = strtok(NULL, ".");
version = version * 256 + (split ? atoi(split) : 0);
split = strtok(NULL, ".");
return version * 256 + (split ? atoi(split) : 0);
}
#endif