On 1/24/19 9:13 PM, Casey Schaufler wrote:
> On 1/24/2019 6:56 PM, Gustavo A. R. Silva wrote:
>> In preparation to enabling -Wimplicit-fallthrough, mark switch
>> cases where we are expecting to fall through.
>>
>> This patch fixes the following warnings:
>>
>> security/integrity/ima/ima_appraise.c:116:26: warning: this statement may
>> fall through [-Wimplicit-fallthrough=]
>> security/integrity/ima/ima_template_lib.c:85:10: warning: this statement may
>> fall through [-Wimplicit-fallthrough=]
>> security/integrity/ima/ima_policy.c:940:18: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
>> security/integrity/ima/ima_policy.c:943:7: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
>> security/integrity/ima/ima_policy.c:972:21: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
>> security/integrity/ima/ima_policy.c:974:7: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
>> security/smack/smack_lsm.c:3391:9: warning: this statement may fall through
>> [-Wimplicit-fallthrough=]
>> security/apparmor/domain.c:569:6: warning: this statement may fall through
>> [-Wimplicit-fallthrough=]
>>
>> Warning level 3 was used: -Wimplicit-fallthrough=3
>>
>> This patch is part of the ongoing efforts to enabling -Wimplicit-fallthrough.
>>
>> Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
>
> Acked-by: Casey Schaufler <ca...@schaufler-ca.com>
>
> Ug. It can't be part of a greater comment? Grumble.
>
Not like the one in this case.
It can be part of a one line comment like this:
/* fall through - ... */
and it has to be placed at the bottom of the case.
I know... I'd be great if this can be improved.
>> ---
>> security/apparmor/domain.c | 2 +-
>> security/integrity/ima/ima_appraise.c | 1 +
>> security/integrity/ima/ima_policy.c | 4 ++++
>> security/integrity/ima/ima_template_lib.c | 1 +
>> security/smack/smack_lsm.c | 3 +--
>> 5 files changed, 8 insertions(+), 3 deletions(-)
>>
>> diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
>> index 726910bba84b..c7c619578095 100644
>> --- a/security/apparmor/domain.c
>> +++ b/security/apparmor/domain.c
>> @@ -572,7 +572,7 @@ static struct aa_label *x_to_label(struct aa_profile
>> *profile,
>> stack = NULL;
>> break;
>> }
>> - /* fall through to X_NAME */
>> + /* fall through - to X_NAME */
>> case AA_X_NAME:
>> if (xindex & AA_X_CHILD)
>> /* released by caller */
>> diff --git a/security/integrity/ima/ima_appraise.c
>> b/security/integrity/ima/ima_appraise.c
>> index a2baa85ea2f5..57daf30fb7d4 100644
>> --- a/security/integrity/ima/ima_appraise.c
>> +++ b/security/integrity/ima/ima_appraise.c
>> @@ -114,6 +114,7 @@ static void ima_set_cache_status(struct
>> integrity_iint_cache *iint,
>> break;
>> case CREDS_CHECK:
>> iint->ima_creds_status = status;
>> + /* fall through */
>> case FILE_CHECK:
>> case POST_SETATTR:
>> iint->ima_file_status = status;
>> diff --git a/security/integrity/ima/ima_policy.c
>> b/security/integrity/ima/ima_policy.c
>> index 8bc8a1c8cb3f..122797023bdb 100644
>> --- a/security/integrity/ima/ima_policy.c
>> +++ b/security/integrity/ima/ima_policy.c
>> @@ -938,10 +938,12 @@ static int ima_parse_rule(char *rule, struct
>> ima_rule_entry *entry)
>> case Opt_uid_gt:
>> case Opt_euid_gt:
>> entry->uid_op = &uid_gt;
>> + /* fall through */
>> case Opt_uid_lt:
>> case Opt_euid_lt:
>> if ((token == Opt_uid_lt) || (token == Opt_euid_lt))
>> entry->uid_op = &uid_lt;
>> + /* fall through */
>> case Opt_uid_eq:
>> case Opt_euid_eq:
>> uid_token = (token == Opt_uid_eq) ||
>> @@ -970,9 +972,11 @@ static int ima_parse_rule(char *rule, struct
>> ima_rule_entry *entry)
>> break;
>> case Opt_fowner_gt:
>> entry->fowner_op = &uid_gt;
>> + /* fall through */
>> case Opt_fowner_lt:
>> if (token == Opt_fowner_lt)
>> entry->fowner_op = &uid_lt;
>> + /* fall through */
>> case Opt_fowner_eq:
>> ima_log_string_op(ab, "fowner", args[0].from,
>> entry->fowner_op);
>> diff --git a/security/integrity/ima/ima_template_lib.c
>> b/security/integrity/ima/ima_template_lib.c
>> index 43752002c222..513b457ae900 100644
>> --- a/security/integrity/ima/ima_template_lib.c
>> +++ b/security/integrity/ima/ima_template_lib.c
>> @@ -83,6 +83,7 @@ static void ima_show_template_data_ascii(struct seq_file
>> *m,
>> /* skip ':' and '\0' */
>> buf_ptr += 2;
>> buflen -= buf_ptr - field_data->data;
>> + /* fall through */
>> case DATA_FMT_DIGEST:
>> case DATA_FMT_HEX:
>> if (!buflen)
>> diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
>> index fa98394a40d0..127aa6c58e34 100644
>> --- a/security/smack/smack_lsm.c
>> +++ b/security/smack/smack_lsm.c
>> @@ -3391,13 +3391,12 @@ static void smack_d_instantiate(struct dentry
>> *opt_dentry, struct inode *inode)
>> */
>> final = &smack_known_star;
>> /*
>> - * Fall through.
>> - *
>> * If a smack value has been set we want to use it,
>> * but since tmpfs isn't giving us the opportunity
>> * to set mount options simulate setting the
>> * superblock default.
>> */
>> + /* Fall through */
>> default:
>> /*
>> * This isn't an understood special case.
