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Commit e10f9e14 authored by J. Bruce Fields's avatar J. Bruce Fields
Browse files

nfsd: clean up nfsd_mode_check() 



Add some more comments, simplify logic, do & S_IFMT just once, name
"type" more helpfully.

Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 7d818a7b

fs/nfsd/nfsfh.c

+18 −12
Original line number Diff line number Diff line
@@ -59,20 +59,26 @@ static int nfsd_acceptable(void *expv, struct dentry *dentry) 
 * the write call).

 */

static inline __be32

nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int type)

nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int requested)

{

	if (type > 0 && (mode & S_IFMT) != type) {

		if (rqstp->rq_vers == 4 && (mode & S_IFMT) == S_IFLNK)

	mode &= S_IFMT;



	if (requested == 0) /* the caller doesn't care */

		return nfs_ok;

	if (mode == requested)

		return nfs_ok;

	/*

	 * v4 has an error more specific than err_notdir which we should

	 * return in preference to err_notdir:

	 */

	if (rqstp->rq_vers == 4 && mode == S_IFLNK)

		return nfserr_symlink;

		else if (type == S_IFDIR)

	if (requested == S_IFDIR)

		return nfserr_notdir;

		else if ((mode & S_IFMT) == S_IFDIR)

	if (mode == S_IFDIR)

		return nfserr_isdir;

		else

	return nfserr_inval;

}

	return 0;

}



static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,

					  struct svc_export *exp)