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| author | Enji Cooper <ngie@FreeBSD.org> | 2016-08-26 03:46:43 +0000 |
|---|---|---|
| committer | Enji Cooper <ngie@FreeBSD.org> | 2016-08-26 03:46:43 +0000 |
| commit | aaf3e744fd4e63742027d09d2eee91b1912ce8e2 (patch) | |
| tree | ca84dc471659870c28e34948195c1667a8794674 /contrib | |
| parent | ed04e0c3dcea4b07d73bda30b678beaf67829a67 (diff) | |
| download | src-aaf3e744fd4e63742027d09d2eee91b1912ce8e2.tar.gz src-aaf3e744fd4e63742027d09d2eee91b1912ce8e2.zip | |
Detect virtual machines on FreeBSD using the kern.vm_guest sysctl
kern.vm_guest == none -> not a virtual machine
It's a bit of a misnomer with the function being named `isQEMU`... but FreeBSD's
support seems to be a bit more all-encompassing than NetBSD's is today.
Sponsored by: EMC / Isilon Storage Division
Notes
Notes:
svn path=/projects/netbsd-tests-update-12/; revision=304830
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/netbsd-tests/lib/libc/gen/isqemu.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libc/gen/isqemu.h b/contrib/netbsd-tests/lib/libc/gen/isqemu.h index e5e5ea4b5867..c44ffda082a0 100644 --- a/contrib/netbsd-tests/lib/libc/gen/isqemu.h +++ b/contrib/netbsd-tests/lib/libc/gen/isqemu.h @@ -41,6 +41,30 @@ static __inline bool isQEMU(void) { +#ifdef __FreeBSD__ + char *vm_guest_name_buf; + size_t len; + bool is_vm; + + if (sysctlbyname("kern.vm_guest", NULL, &len, NULL, 0) == -1) + err(EXIT_FAILURE, "sysctl"); + + if ((vm_guest_name_buf = malloc(len)) == NULL) + err(EXIT_FAILURE, "malloc"); + + if (sysctlbyname("kern.vm_guest", vm_guest_name_buf, &len, NULL, 0) + == -1) + err(EXIT_FAILURE, "sysctl"); + + if (strcmp(vm_guest_name_buf, "none") == 0) + is_vm = false; + else + is_vm = true; + + free(vm_guest_name_buf); + + return is_vm; +#else #if defined(__i386__) || defined(__x86_64__) char name[1024]; size_t len = sizeof(name); @@ -54,6 +78,7 @@ isQEMU(void) { #else return false; #endif +#endif } #ifdef TEST |