Re: [PATCH 08/11] network.c: removed some warnings

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On 07/20/2017 02:37 PM, J. Bruce Fields wrote:
> On Wed, Jul 19, 2017 at 04:53:51PM -0400, Steve Dickson wrote:
>> network.c:1234:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>> network.c:1382:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>> network.c:1477:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>> network.c:1508:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
>> network.c:1574:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
> 
> Looks like after this an out-of-range port number will be treated as an
> unspecified port rather than returning an error.  That sounds wrong.
> 
> I didn't check the others.
> 
> All of these "break" statements added without any explanation are making
> me nervous.
Yeah you are right... Boy there are some subtle things going there... 

Thanks for the review and cycles! 

steved.

> 
> --b.
> 
>> Signed-off-by: Steve Dickson <steved@xxxxxxxxxx>
>> ---
>>  utils/mount/network.c | 5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/utils/mount/network.c b/utils/mount/network.c
>> index 281e935..19f14e5 100644
>> --- a/utils/mount/network.c
>> +++ b/utils/mount/network.c
>> @@ -1235,6 +1235,7 @@ nfs_nfs_program(struct mount_options *options, unsigned long *program)
>>  			*program = tmp;
>>  			return 1;
>>  		}
>> +		break;
>>  	case PO_BAD_VALUE:
>>  		nfs_error(_("%s: invalid value for 'nfsprog=' option"),
>>  				progname);
>> @@ -1383,6 +1384,7 @@ nfs_nfs_port(struct mount_options *options, unsigned long *port)
>>  			*port = tmp;
>>  			return 1;
>>  		}
>> +		break;
>>  	case PO_BAD_VALUE:
>>  		nfs_error(_("%s: invalid value for 'port=' option"),
>>  				progname);
>> @@ -1478,6 +1480,7 @@ nfs_mount_program(struct mount_options *options, unsigned long *program)
>>  			*program = tmp;
>>  			return 1;
>>  		}
>> +		break;
>>  	case PO_BAD_VALUE:
>>  		nfs_error(_("%s: invalid value for 'mountprog=' option"),
>>  				progname);
>> @@ -1509,6 +1512,7 @@ nfs_mount_version(struct mount_options *options, unsigned long *version)
>>  			*version = tmp;
>>  			return 1;
>>  		}
>> +		break;
>>  	case PO_BAD_VALUE:
>>  		nfs_error(_("%s: invalid value for 'mountvers=' option"),
>>  				progname);
>> @@ -1575,6 +1579,7 @@ nfs_mount_port(struct mount_options *options, unsigned long *port)
>>  			*port = tmp;
>>  			return 1;
>>  		}
>> +		break;
>>  	case PO_BAD_VALUE:
>>  		nfs_error(_("%s: invalid value for 'mountport=' option"),
>>  				progname);
>> -- 
>> 2.13.3
>>
>> --
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