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pkg/system: replace more uses of "syscall"

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follow-up to 069fdc8a08, replacing
more uses of the syscall package in favor of their "windows"
equivalents in golang.org/x/sys.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2020-03-09 11:50:32 +01:00
parent 6004b9ad52
commit 079fb80657
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GPG key ID: 76698F39D527CE8C
1 changed files with 8 additions and 5 deletions
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13
pkg/system/path_windows.go
View file

@ -1,24 +1,27 @@
package system // import "github.com/docker/docker/pkg/system"
import "syscall"
import "golang.org/x/sys/windows"
// GetLongPathName converts Windows short pathnames to full pathnames.
// For example C:\Users\ADMIN~1 --> C:\Users\Administrator.
// It is a no-op on non-Windows platforms
func GetLongPathName(path string) (string, error) {
// See https://groups.google.com/forum/#!topic/golang-dev/1tufzkruoTg
p := syscall.StringToUTF16(path)
p, err := windows.UTF16FromString(path)
if err != nil {
return "", err
}
b := p // GetLongPathName says we can reuse buffer
n, err := syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
n, err := windows.GetLongPathName(&p[0], &b[0], uint32(len(b)))
if err != nil {
return "", err
}
if n > uint32(len(b)) {
b = make([]uint16, n)
_, err = syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
_, err = windows.GetLongPathName(&p[0], &b[0], uint32(len(b)))
if err != nil {
return "", err
}
}
return syscall.UTF16ToString(b), nil
return windows.UTF16ToString(b), nil
}