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nfsd: clean up expkey_parse error cases 

We might as well do all of these at the end.  Fix up a couple minor
style nits while we're there.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields 2008-10-20 16:34:21 -04:00
parent 6dfcde98a2
commit 30bc4dfd3b
1 changed files with 11 additions and 14 deletions
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25
fs/nfsd/export.c
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@ -99,7 +99,7 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
int fsidtype;
char *ep;
struct svc_expkey key;
struct svc_expkey *ek;
struct svc_expkey *ek = NULL;
if (mesg[mlen-1] != '\n')
return -EINVAL;
@ -107,7 +107,8 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
err = -ENOMEM;
if (!buf) goto out;
if (!buf)
goto out;
err = -EINVAL;
if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
@ -151,38 +152,34 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
/* now we want a pathname, or empty meaning NEGATIVE */
err = -EINVAL;
if ((len=qword_get(&mesg, buf, PAGE_SIZE)) < 0) {
cache_put(&ek->h, &svc_expkey_cache);
len = qword_get(&mesg, buf, PAGE_SIZE);
if (len < 0)
goto out;
}
dprintk("Path seems to be <%s>\n", buf);
err = 0;
if (len == 0) {
set_bit(CACHE_NEGATIVE, &key.h.flags);
ek = svc_expkey_update(&key, ek);
if (ek)
cache_put(&ek->h, &svc_expkey_cache);
else err = -ENOMEM;
if (!ek)
err = -ENOMEM;
} else {
struct nameidata nd;
err = path_lookup(buf, 0, &nd);
if (err) {
cache_put(&ek->h, &svc_expkey_cache);
if (err)
goto out;
}
dprintk("Found the path %s\n", buf);
key.ek_path = nd.path;
ek = svc_expkey_update(&key, ek);
if (ek)
cache_put(&ek->h, &svc_expkey_cache);
else
if (!ek)
err = -ENOMEM;
path_put(&nd.path);
}
cache_flush();
out:
if (ek)
cache_put(&ek->h, &svc_expkey_cache);
if (dom)
auth_domain_put(dom);
kfree(buf);