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| author | Ramkumar Ramachandra <artagnon@gmail.com> | 2013-07-16 16:44:40 +0530 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2013-07-16 14:27:53 +0200 |
| commit | 7080ea16b5a0bfd71bfcdffc998e91f5273d47f9 (patch) | |
| tree | 33c7f57db6479096bd0971308422ef902a526c92 /src/shared/virt.c | |
| parent | 36c0868b67a9387d39c97983d3d22cfce0fedc62 (diff) | |
detect-virt: detect User-Mode Linux
In a User-Mode Linux session:
$ systemd-detect-virt
none
Although it is possible to reliably detect virtualization:
$ cat /proc/cpuinfo
processor : 0
vendor_id : User Mode Linux
model name : UML
mode : skas
host : Linux kytes 3.11.0-rc1-00009-ge5fd680 (...)
bogomips : 7007.43
So, grep for the string "\nvendor_id\t: User Mode Linux\n" in
/proc/cpuinfo, and say "uml" when asked.
Diffstat (limited to 'src/shared/virt.c')
| -rw-r--r-- | src/shared/virt.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/shared/virt.c b/src/shared/virt.c index 1c86a3dd1e..1abd6863ea 100644 --- a/src/shared/virt.c +++ b/src/shared/virt.c @@ -67,6 +67,7 @@ int detect_vm(const char **id) { const char *j, *k; bool hypervisor; _cleanup_free_ char *hvtype = NULL; + _cleanup_free_ char *cpuinfo_contents = NULL; int r; /* Try high-level hypervisor sysfs file first: @@ -164,6 +165,16 @@ int detect_vm(const char **id) { } #endif + + /* Detect User-Mode Linux by reading /proc/cpuinfo */ + r = read_full_file("/proc/cpuinfo", &cpuinfo_contents, NULL); + if (r < 0) + return r; + if (strstr(cpuinfo_contents, "\nvendor_id\t: User Mode Linux\n")) { + *id = "uml"; + return 1; + } + return 0; } |