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Use /usr/lib/os-release if /etc/os-release is missing.

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As per os-release spec, /usr/lib/os-release file should be tried if
/etc/os-release is missing.

http://www.freedesktop.org/software/systemd/man/os-release.html

Thanks James Hunt <james.o.hunt@intel.com> and
Dimitri John Ledkov <dimitri.j.ledkov@intel.com> for contribution.

Close #17174

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
This commit is contained in:
Alexander Morozov 2015-11-16 16:19:14 -08:00
parent 6dab26120b
commit 2f11790e60
2 changed files with 39 additions and 1 deletions
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11
parsers/operatingsystem/operatingsystem_linux.go
View file

@ -19,13 +19,22 @@ var (
// file to check to determine Operating System
etcOsRelease = "/etc/os-release"
// used by stateless systems like Clear Linux
altOsRelease = "/usr/lib/os-release"
)
// GetOperatingSystem gets the name of the current operating system.
func GetOperatingSystem() (string, error) {
osReleaseFile, err := os.Open(etcOsRelease)
if err != nil {
return "", err
if !os.IsNotExist(err) {
return "", fmt.Errorf("Error opening %s: %v", etcOsRelease, err)
}
osReleaseFile, err = os.Open(altOsRelease)
if err != nil {
return "", fmt.Errorf("Error opening %s: %v", altOsRelease, err)
}
}
defer osReleaseFile.Close()