Documentation
¶
Index ¶
- Constants
- Variables
- func CheckSystemDriveAndRemoveDriveLetter(path string) (string, error)
- func Chmod(name string, mode os.FileMode) error
- func Chtimes(name string, atime time.Time, mtime time.Time) error
- func CommandLineToArgv(commandLine string) ([]string, error)
- func DefaultPathEnv(platform string) string
- func EnsureRemoveAll(dir string) error
- func GetExitCode(err error) (int, error)
- func IsProcessAlive(pid int) bool
- func KillProcess(pid int)
- func LCOWSupported() bool
- func LUtimesNano(path string, ts []syscall.Timespec) error
- func Lchown(name string, uid, gid int) error
- func Lgetxattr(path string, attr string) ([]byte, error)
- func Llistxattr(path string) ([]string, error)
- func Lsetxattr(path string, attr string, data []byte, flags int) error
- func Mkdev(major int64, minor int64) uint32
- func Mknod(path string, mode uint32, dev int) error
- func ProcessExitCode(err error) (exitCode int)
- func Umask(newmask int) (oldmask int, err error)
- func Unmount(dest string) error
- type MemInfo
- type StatT
Constants ¶
const ( // Value is larger than the maximum size allowed E2BIG unix.Errno = unix.E2BIG // Operation not supported EOPNOTSUPP unix.Errno = unix.EOPNOTSUPP )
Variables ¶
var ( // ErrNotSupportedPlatform means the platform is not supported. ErrNotSupportedPlatform = errors.New("platform and architecture is not supported") )
Functions ¶
func CheckSystemDriveAndRemoveDriveLetter ¶
CheckSystemDriveAndRemoveDriveLetter verifies that a path, if it includes a drive letter, is the system drive. This is a no-op on Linux.
func CommandLineToArgv ¶
CommandLineToArgv should not be used on Unix. It simply returns commandLine in the only element in the returned array.
func DefaultPathEnv ¶
DefaultPathEnv is unix style list of directories to search for executables. Each directory is separated from the next by a colon ':' character .
func EnsureRemoveAll ¶
EnsureRemoveAll wraps `os.RemoveAll` to check for specific errors that can often be remedied. Only use `EnsureRemoveAll` if you really want to make every effort to remove a directory.
Because of the way `os.Remove` (and by extension `os.RemoveAll`) works, there can be a race between reading directory entries and then actually attempting to remove everything in the directory. These types of errors do not need to be returned since it's ok for the dir to be gone we can just retry the remove operation.
This should not return a `os.ErrNotExist` kind of error under any circumstances
func GetExitCode ¶
GetExitCode returns the ExitStatus of the specified error if its type is exec.ExitError, returns 0 and an error otherwise.
func IsProcessAlive ¶
IsProcessAlive returns true if process with a given pid is running.
func LCOWSupported ¶
func LCOWSupported() bool
LCOWSupported returns true if Linux containers on Windows are supported.
func LUtimesNano ¶
LUtimesNano is used to change access and modification time of the specified path. It's used for symbol link file because unix.UtimesNano doesn't support a NOFOLLOW flag atm.
func Lgetxattr ¶
Lgetxattr retrieves the value of the extended attribute identified by attr and associated with the given path in the file system. Returns a []byte slice if the xattr is set and nil otherwise.
func Llistxattr ¶
Llistxattr lists extended attributes associated with the given path in the file system.
func Lsetxattr ¶
Lsetxattr sets the value of the extended attribute identified by attr and associated with the given path in the file system.
func Mkdev ¶
Mkdev is used to build the value of linux devices (in /dev/) which specifies major and minor number of the newly created device special file. Linux device nodes are a bit weird due to backwards compat with 16 bit device nodes. They are, from low to high: the lower 8 bits of the minor, then 12 bits of the major, then the top 12 bits of the minor.
func Mknod ¶
Mknod creates a filesystem node (file, device special file or named pipe) named path with attributes specified by mode and dev.
func ProcessExitCode ¶
ProcessExitCode process the specified error and returns the exit status code if the error was of type exec.ExitError, returns nothing otherwise.
Types ¶
type MemInfo ¶
type MemInfo struct {
// Total usable RAM (i.e. physical RAM minus a few reserved bits and the
// kernel binary code).
MemTotal int64
// Amount of free memory.
MemFree int64
// Total amount of swap space available.
SwapTotal int64
// Amount of swap space that is currently unused.
SwapFree int64
}
MemInfo contains memory statistics of the host system.
func ReadMemInfo ¶
ReadMemInfo retrieves memory statistics of the host system and returns a MemInfo type.
type StatT ¶
type StatT struct {
// contains filtered or unexported fields
}
StatT type contains status of a file. It contains metadata like permission, owner, group, size, etc about a file.
func FromStatT ¶
FromStatT converts a syscall.Stat_t type to a system.Stat_t type This is exposed on Linux as pkg/archive/changes uses it.
func Fstat ¶
Fstat takes an open file descriptor and returns a system.StatT type pertaining to that file.
Throws an error if the file descriptor is invalid
func Lstat ¶
Lstat takes a path to a file and returns a system.StatT type pertaining to that file.
Throws an error if the file does not exist
func Stat ¶
Stat takes a path to a file and returns a system.StatT type pertaining to that file.
Throws an error if the file does not exist
Source Files