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Commit 0d63790c authored by Kinglong Mee's avatar Kinglong Mee Committed by J. Bruce Fields
Browse files

NFSD: Helper function for parsing uuid 



Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent a1f05514

fs/nfsd/export.c

+20 −12
Original line number Diff line number Diff line
@@ -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