[PATCH 2/2] audit: fix sparse shadowed variable warnings

Use msglen as the identifier.
kernel/audit.c:724:10: warning: symbol 'len' shadows an earlier one
kernel/audit.c:575:8: originally declared here

Don't use ino_f to check the inode field at the end of the functions.
kernel/auditfilter.c:429:22: warning: symbol 'f' shadows an earlier one
kernel/auditfilter.c:420:21: originally declared here
kernel/auditfilter.c:542:22: warning: symbol 'f' shadows an earlier one
kernel/auditfilter.c:529:21: originally declared here

i always used as a counter for a for loop and initialized to zero before
use.  Eliminate the inner i variables.
kernel/auditsc.c:1295:8: warning: symbol 'i' shadows an earlier one
kernel/auditsc.c:1152:6: originally declared here
kernel/auditsc.c:1320:7: warning: symbol 'i' shadows an earlier one
kernel/auditsc.c:1152:6: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/kernel/audit.c b/kernel/audit.c
index 5b9ad3d..f4799eb 100644 (file)
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -813,21 +813,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
        case AUDIT_MAKE_EQUIV: {
                void *bufp = data;
                u32 sizes[2];
-               size_t len = nlmsg_len(nlh);
+               size_t msglen = nlmsg_len(nlh);
                char *old, *new;
 
                err = -EINVAL;
-               if (len < 2 * sizeof(u32))
+               if (msglen < 2 * sizeof(u32))
                        break;
                memcpy(sizes, bufp, 2 * sizeof(u32));
                bufp += 2 * sizeof(u32);
-               len -= 2 * sizeof(u32);
-               old = audit_unpack_string(&bufp, &len, sizes[0]);
+               msglen -= 2 * sizeof(u32);
+               old = audit_unpack_string(&bufp, &msglen, sizes[0]);
                if (IS_ERR(old)) {
                        err = PTR_ERR(old);
                        break;
                }
-               new = audit_unpack_string(&bufp, &len, sizes[1]);
+               new = audit_unpack_string(&bufp, &msglen, sizes[1]);
                if (IS_ERR(new)) {
                        err = PTR_ERR(new);
                        kfree(old);

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index bcf1fb7..7c3450d 100644 (file)
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -417,7 +417,7 @@ exit_err:
 static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
 {
        struct audit_entry *entry;
-       struct audit_field *f;
+       struct audit_field *ino_f;
        int err = 0;
        int i;
 
@@ -499,9 +499,9 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
                }
        }
 
-       f = entry->rule.inode_f;
-       if (f) {
-               switch(f->op) {
+       ino_f = entry->rule.inode_f;
+       if (ino_f) {
+               switch(ino_f->op) {
                case AUDIT_NOT_EQUAL:
                        entry->rule.inode_f = NULL;
                case AUDIT_EQUAL:
@@ -526,7 +526,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
 {
        int err = 0;
        struct audit_entry *entry;
-       struct audit_field *f;
+       struct audit_field *ino_f;
        void *bufp;
        size_t remain = datasz - sizeof(struct audit_rule_data);
        int i;
@@ -654,9 +654,9 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
                }
        }
 
-       f = entry->rule.inode_f;
-       if (f) {
-               switch(f->op) {
+       ino_f = entry->rule.inode_f;
+       if (ino_f) {
+               switch(ino_f->op) {
                case AUDIT_NOT_EQUAL:
                        entry->rule.inode_f = NULL;
                case AUDIT_EQUAL:

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index e128adc..0914099 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1293,7 +1293,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
                        break; }
 
                case AUDIT_SOCKETCALL: {
-                       int i;
                        struct audit_aux_data_socketcall *axs = (void *)aux;
                        audit_log_format(ab, "nargs=%d", axs->nargs);
                        for (i=0; i<axs->nargs; i++)
@@ -1318,7 +1317,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
 
        for (aux = context->aux_pids; aux; aux = aux->next) {
                struct audit_aux_data_pids *axs = (void *)aux;
-               int i;
 
                for (i = 0; i < axs->pid_count; i++)
                        if (audit_log_pid_context(context, axs->target_pid[i],