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nfsd4: return badname, not inval, on "." or "..", or "/"

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The spec requires badname, not inval, in these cases.

Some callers want us to return enoent, but I can see no justification
for that.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-11-25 16:31:00 -05:00
parent 063b0fb9fa
commit a36b1725b3
1 changed files with 12 additions and 13 deletions
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25
fs/nfsd/nfs4xdr.c
View file

@ -65,17 +65,17 @@
#define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
static __be32
check_filename(char *str, int len, __be32 err)
check_filename(char *str, int len)
{
int i;
if (len == 0)
return nfserr_inval;
if (isdotent(str, len))
return err;
return nfserr_badname;
for (i = 0; i < len; i++)
if (str[i] == '/')
return err;
return nfserr_badname;
return 0;
}
@ -570,7 +570,7 @@ nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create
READ32(create->cr_namelen);
READ_BUF(create->cr_namelen);
SAVEMEM(create->cr_name, create->cr_namelen);
if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
if ((status = check_filename(create->cr_name, create->cr_namelen)))
return status;
status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr,
@ -602,7 +602,7 @@ nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
READ32(link->li_namelen);
READ_BUF(link->li_namelen);
SAVEMEM(link->li_name, link->li_namelen);
if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval)))
if ((status = check_filename(link->li_name, link->li_namelen)))
return status;
DECODE_TAIL;
@ -696,7 +696,7 @@ nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup
READ32(lookup->lo_len);
READ_BUF(lookup->lo_len);
SAVEMEM(lookup->lo_name, lookup->lo_len);
if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent)))
if ((status = check_filename(lookup->lo_name, lookup->lo_len)))
return status;
DECODE_TAIL;
@ -860,7 +860,7 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
READ32(open->op_fname.len);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
if ((status = check_filename(open->op_fname.data, open->op_fname.len)))
return status;
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
@ -875,7 +875,7 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
READ32(open->op_fname.len);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
if ((status = check_filename(open->op_fname.data, open->op_fname.len)))
return status;
break;
case NFS4_OPEN_CLAIM_FH:
@ -987,7 +987,7 @@ nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove
READ32(remove->rm_namelen);
READ_BUF(remove->rm_namelen);
SAVEMEM(remove->rm_name, remove->rm_namelen);
if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent)))
if ((status = check_filename(remove->rm_name, remove->rm_namelen)))
return status;
DECODE_TAIL;
@ -1005,9 +1005,9 @@ nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename
READ32(rename->rn_tnamelen);
READ_BUF(rename->rn_tnamelen);
SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent)))
if ((status = check_filename(rename->rn_sname, rename->rn_snamelen)))
return status;
if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval)))
if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen)))
return status;
DECODE_TAIL;
@ -1034,8 +1034,7 @@ nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
READ32(secinfo->si_namelen);
READ_BUF(secinfo->si_namelen);
SAVEMEM(secinfo->si_name, secinfo->si_namelen);
status = check_filename(secinfo->si_name, secinfo->si_namelen,
nfserr_noent);
status = check_filename(secinfo->si_name, secinfo->si_namelen);
if (status)
return status;
DECODE_TAIL;