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vsock: Propogate error for vsock ioctl

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Make error handling better by propogating error.

Fixes #1953

Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
This commit is contained in:
Archana Shinde 2019-08-12 12:13:52 -07:00
parent 4cf1fa687d
commit 3fc17e96fc
1 changed files with 3 additions and 3 deletions
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6
virtcontainers/utils/utils_linux.go
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@ -73,18 +73,18 @@ func FindContextID() (*os.File, uint64, error) {
// Looking for the first available context ID.
for cid := contextID; cid <= maxUInt; cid++ {
if err := ioctlFunc(vsockFd.Fd(), ioctlVhostVsockSetGuestCid, uintptr(unsafe.Pointer(&cid))); err == nil {
if err = ioctlFunc(vsockFd.Fd(), ioctlVhostVsockSetGuestCid, uintptr(unsafe.Pointer(&cid))); err == nil {
return vsockFd, cid, nil
}
}
// Last chance to get a free context ID.
for cid := contextID - 1; cid >= firstContextID; cid-- {
if err := ioctlFunc(vsockFd.Fd(), ioctlVhostVsockSetGuestCid, uintptr(unsafe.Pointer(&cid))); err == nil {
if err = ioctlFunc(vsockFd.Fd(), ioctlVhostVsockSetGuestCid, uintptr(unsafe.Pointer(&cid))); err == nil {
return vsockFd, cid, nil
}
}
vsockFd.Close()
return nil, 0, fmt.Errorf("Could not get a unique context ID for the vsock")
return nil, 0, fmt.Errorf("Could not get a unique context ID for the vsock : %s", err)
}