Date: Fri, 26 Aug 2016 03:46:43 +0000 (UTC) From: Garrett Cooper <ngie@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r304830 - projects/netbsd-tests-update-12/contrib/netbsd-tests/lib/libc/gen Message-ID: <201608260346.u7Q3khFE006131@repo.freebsd.org>
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Author: ngie Date: Fri Aug 26 03:46:43 2016 New Revision: 304830 URL: https://svnweb.freebsd.org/changeset/base/304830 Log: 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 Modified: projects/netbsd-tests-update-12/contrib/netbsd-tests/lib/libc/gen/isqemu.h Modified: projects/netbsd-tests-update-12/contrib/netbsd-tests/lib/libc/gen/isqemu.h ============================================================================== --- projects/netbsd-tests-update-12/contrib/netbsd-tests/lib/libc/gen/isqemu.h Fri Aug 26 03:36:37 2016 (r304829) +++ projects/netbsd-tests-update-12/contrib/netbsd-tests/lib/libc/gen/isqemu.h Fri Aug 26 03:46:43 2016 (r304830) @@ -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
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