diff options
| -rw-r--r-- | fs/nfsd/nfsfh.c | 2 | ||||
| -rw-r--r-- | fs/nfsd/nfsproc.c | 3 | ||||
| -rw-r--r-- | fs/nfsd/vfs.c | 13 | ||||
| -rw-r--r-- | include/linux/nfsd/export.h | 13 | ||||
| -rw-r--r-- | include/linux/nfsd/nfsd.h | 3 |
5 files changed, 24 insertions, 10 deletions
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index d5fe392b14fb..8d2b49914843 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -255,7 +255,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access) goto out; /* Finally, check access permissions. */ - error = nfsd_permission(exp, dentry, access); + error = nfsd_permission(rqstp, exp, dentry, access); if (error) { dprintk("fh_verify: %s/%s permission failure, " diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c index b2c7147aa921..977a71f64e19 100644 --- a/fs/nfsd/nfsproc.c +++ b/fs/nfsd/nfsproc.c @@ -278,7 +278,8 @@ nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp, * echo thing > device-special-file-or-pipe * by doing a CREATE with type==0 */ - nfserr = nfsd_permission(newfhp->fh_export, + nfserr = nfsd_permission(rqstp, + newfhp->fh_export, newfhp->fh_dentry, MAY_WRITE|MAY_LOCAL_ACCESS); if (nfserr && nfserr != nfserr_rofs) diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8e109e586a74..e90f4a8a1d01 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -328,7 +328,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, /* The size case is special. It changes the file as well as the attributes. */ if (iap->ia_valid & ATTR_SIZE) { if (iap->ia_size < inode->i_size) { - err = nfsd_permission(fhp->fh_export, dentry, MAY_TRUNC|MAY_OWNER_OVERRIDE); + err = nfsd_permission(rqstp, fhp->fh_export, dentry, MAY_TRUNC|MAY_OWNER_OVERRIDE); if (err) goto out; } @@ -616,7 +616,7 @@ nfsd_access(struct svc_rqst *rqstp, struct svc_fh *fhp, u32 *access, u32 *suppor sresult |= map->access; - err2 = nfsd_permission(export, dentry, map->how); + err2 = nfsd_permission(rqstp, export, dentry, map->how); switch (err2) { case nfs_ok: result |= map->access; @@ -1043,7 +1043,7 @@ nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, __be32 err; if (file) { - err = nfsd_permission(fhp->fh_export, fhp->fh_dentry, + err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, MAY_READ|MAY_OWNER_OVERRIDE); if (err) goto out; @@ -1072,7 +1072,7 @@ nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, __be32 err = 0; if (file) { - err = nfsd_permission(fhp->fh_export, fhp->fh_dentry, + err = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry, MAY_WRITE|MAY_OWNER_OVERRIDE); if (err) goto out; @@ -1801,7 +1801,8 @@ nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat) * Check for a user's access permissions to this inode. */ __be32 -nfsd_permission(struct svc_export *exp, struct dentry *dentry, int acc) +nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp, + struct dentry *dentry, int acc) { struct inode *inode = dentry->d_inode; int err; @@ -1832,7 +1833,7 @@ nfsd_permission(struct svc_export *exp, struct dentry *dentry, int acc) */ if (!(acc & MAY_LOCAL_ACCESS)) if (acc & (MAY_WRITE | MAY_SATTR | MAY_TRUNC)) { - if (EX_RDONLY(exp) || IS_RDONLY(inode)) + if (EX_RDONLY(exp, rqstp) || IS_RDONLY(inode)) return nfserr_rofs; if (/* (acc & MAY_WRITE) && */ IS_IMMUTABLE(inode)) return nfserr_perm; diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 424be41130ba..a01f775cb944 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -112,10 +112,21 @@ struct svc_expkey { #define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT)) #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC)) -#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY) #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE) #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES) +static inline int EX_RDONLY(struct svc_export *exp, struct svc_rqst *rqstp) +{ + struct exp_flavor_info *f; + struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors; + + for (f = exp->ex_flavors; f < end; f++) { + if (f->pseudoflavor == rqstp->rq_flavor) + return f->flags & NFSEXP_READONLY; + } + return exp->ex_flags & NFSEXP_READONLY; +} + __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp); /* diff --git a/include/linux/nfsd/nfsd.h b/include/linux/nfsd/nfsd.h index 62499c2f0918..54ef1a18a56c 100644 --- a/include/linux/nfsd/nfsd.h +++ b/include/linux/nfsd/nfsd.h @@ -119,7 +119,8 @@ __be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *, struct kstatfs *); int nfsd_notify_change(struct inode *, struct iattr *); -__be32 nfsd_permission(struct svc_export *, struct dentry *, int); +__be32 nfsd_permission(struct svc_rqst *, struct svc_export *, + struct dentry *, int); int nfsd_sync_dir(struct dentry *dp); #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) |