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NFSD: Helper function for parsing uuid 

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Kinglong Mee 2014-05-23 19:59:06 +08:00 committed by J. Bruce Fields
parent a1f05514b0
commit 0d63790c36
1 changed files with 20 additions and 12 deletions
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32
fs/nfsd/export.c
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@ -480,6 +480,23 @@ static inline int
secinfo_parse(char **mesg, char *buf, struct svc_export *exp) { return 0; }
#endif
static inline int
uuid_parse(char **mesg, char *buf, unsigned char **puuid)
{
int len;
/* expect a 16 byte uuid encoded as \xXXXX... */
len = qword_get(mesg, buf, PAGE_SIZE);
if (len != 16)
return -EINVAL;
*puuid = kmemdup(buf, 16, GFP_KERNEL);
if (*puuid == NULL)
return -ENOMEM;
return 0;
}
static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
{
/* client path expiry [flags anonuid anongid fsid] */
@ -558,18 +575,9 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
while ((len = qword_get(&mesg, buf, PAGE_SIZE)) > 0) {
if (strcmp(buf, "fsloc") == 0)
err = fsloc_parse(&mesg, buf, &exp.ex_fslocs);
else if (strcmp(buf, "uuid") == 0) {
/* expect a 16 byte uuid encoded as \xXXXX... */
len = qword_get(&mesg, buf, PAGE_SIZE);
if (len != 16)
err = -EINVAL;
else {
exp.ex_uuid =
kmemdup(buf, 16, GFP_KERNEL);
if (exp.ex_uuid == NULL)
err = -ENOMEM;
}
} else if (strcmp(buf, "secinfo") == 0)
else if (strcmp(buf, "uuid") == 0)
err = uuid_parse(&mesg, buf, &exp.ex_uuid);
else if (strcmp(buf, "secinfo") == 0)
err = secinfo_parse(&mesg, buf, &exp);
else
/* quietly ignore unknown words and anything