NFSD: Helper function for parsing uuid
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -480,6 +480,23 @@ static inline int
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secinfo_parse(char **mesg, char *buf, struct svc_export *exp) { return 0; }
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#endif
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static inline int
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uuid_parse(char **mesg, char *buf, unsigned char **puuid)
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{
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int len;
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/* expect a 16 byte uuid encoded as \xXXXX... */
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len = qword_get(mesg, buf, PAGE_SIZE);
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if (len != 16)
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return -EINVAL;
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*puuid = kmemdup(buf, 16, GFP_KERNEL);
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if (*puuid == NULL)
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return -ENOMEM;
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return 0;
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}
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static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
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{
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/* client path expiry [flags anonuid anongid fsid] */
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@ -558,18 +575,9 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
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while ((len = qword_get(&mesg, buf, PAGE_SIZE)) > 0) {
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if (strcmp(buf, "fsloc") == 0)
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err = fsloc_parse(&mesg, buf, &exp.ex_fslocs);
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else if (strcmp(buf, "uuid") == 0) {
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/* expect a 16 byte uuid encoded as \xXXXX... */
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len = qword_get(&mesg, buf, PAGE_SIZE);
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if (len != 16)
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err = -EINVAL;
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else {
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exp.ex_uuid =
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kmemdup(buf, 16, GFP_KERNEL);
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if (exp.ex_uuid == NULL)
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err = -ENOMEM;
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}
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} else if (strcmp(buf, "secinfo") == 0)
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else if (strcmp(buf, "uuid") == 0)
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err = uuid_parse(&mesg, buf, &exp.ex_uuid);
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else if (strcmp(buf, "secinfo") == 0)
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err = secinfo_parse(&mesg, buf, &exp);
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else
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/* quietly ignore unknown words and anything
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