github.com/vmware/govmomi@v0.51.0/cli/vm/guest/touch.go (about)

     1  // © Broadcom. All Rights Reserved.
     2  // The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
     3  // SPDX-License-Identifier: Apache-2.0
     4  
     5  package guest
     6  
     7  import (
     8  	"bytes"
     9  	"context"
    10  	"flag"
    11  	"time"
    12  
    13  	"github.com/vmware/govmomi/cli"
    14  	"github.com/vmware/govmomi/fault"
    15  	"github.com/vmware/govmomi/vim25/soap"
    16  	"github.com/vmware/govmomi/vim25/types"
    17  )
    18  
    19  type touch struct {
    20  	*GuestFlag
    21  
    22  	nocreate bool
    23  	atime    bool
    24  	date     string
    25  }
    26  
    27  func init() {
    28  	cli.Register("guest.touch", &touch{})
    29  }
    30  
    31  func (cmd *touch) Register(ctx context.Context, f *flag.FlagSet) {
    32  	cmd.GuestFlag, ctx = newGuestFlag(ctx)
    33  	cmd.GuestFlag.Register(ctx, f)
    34  
    35  	f.BoolVar(&cmd.atime, "a", false, "Change only the access time")
    36  	f.BoolVar(&cmd.nocreate, "c", false, "Do not create any files")
    37  	f.StringVar(&cmd.date, "d", "", "Use DATE instead of current time")
    38  }
    39  
    40  func (cmd *touch) Process(ctx context.Context) error {
    41  	if err := cmd.GuestFlag.Process(ctx); err != nil {
    42  		return err
    43  	}
    44  	return nil
    45  }
    46  
    47  func (cmd *touch) Usage() string {
    48  	return "FILE"
    49  }
    50  
    51  func (cmd *touch) Description() string {
    52  	return `Change FILE times on VM.
    53  
    54  Examples:
    55    govc guest.touch -vm $name /var/log/foo.log
    56    govc guest.touch -vm $name -d "$(date -d '1 day ago')" /var/log/foo.log`
    57  }
    58  
    59  func (cmd *touch) Run(ctx context.Context, f *flag.FlagSet) error {
    60  	if f.NArg() != 1 {
    61  		return flag.ErrHelp
    62  	}
    63  
    64  	m, err := cmd.FileManager()
    65  	if err != nil {
    66  		return err
    67  	}
    68  
    69  	name := f.Arg(0)
    70  
    71  	var attr types.GuestFileAttributes
    72  	now := time.Now()
    73  
    74  	if cmd.date != "" {
    75  		now, err = time.Parse(time.UnixDate, cmd.date)
    76  		if err != nil {
    77  			return err
    78  		}
    79  	}
    80  
    81  	if cmd.atime {
    82  		attr.AccessTime = &now
    83  	} else {
    84  		attr.ModificationTime = &now
    85  	}
    86  
    87  	err = m.ChangeFileAttributes(ctx, cmd.Auth(), name, &attr)
    88  	if err != nil && !cmd.nocreate {
    89  		if fault.Is(err, &types.FileNotFound{}) {
    90  			// create a new empty file
    91  			url, cerr := m.InitiateFileTransferToGuest(ctx, cmd.Auth(), name, &attr, 0, false)
    92  			if cerr != nil {
    93  				return cerr
    94  			}
    95  
    96  			u, cerr := cmd.ParseURL(url)
    97  			if cerr != nil {
    98  				return cerr
    99  			}
   100  
   101  			c, cerr := cmd.Client()
   102  			if cerr != nil {
   103  				return cerr
   104  			}
   105  
   106  			err = c.Client.Upload(ctx, new(bytes.Buffer), u, &soap.DefaultUpload)
   107  			if err == nil && cmd.date != "" {
   108  				err = m.ChangeFileAttributes(ctx, cmd.Auth(), name, &attr)
   109  			}
   110  		}
   111  	}
   112  
   113  	return err
   114  }