struct inode *inode;
int accmode = MAY_SATTR;
int ftype = 0;
- int imode;
__be32 err;
int host_err;
int size_change = 0;
DQUOT_INIT(inode);
}
- imode = inode->i_mode;
+ /* sanitize the mode change */
if (iap->ia_valid & ATTR_MODE) {
iap->ia_mode &= S_IALLUGO;
- imode = iap->ia_mode |= (imode & ~S_IALLUGO);
- /* if changing uid/gid revoke setuid/setgid in mode */
- if ((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) {
- iap->ia_valid |= ATTR_KILL_PRIV;
+ iap->ia_mode |= (inode->i_mode & ~S_IALLUGO);
+ }
+
+ /* Revoke setuid/setgid on chown */
+ if (((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) ||
+ ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid)) {
+ iap->ia_valid |= ATTR_KILL_PRIV;
+ if (iap->ia_valid & ATTR_MODE) {
+ /* we're setting mode too, just clear the s*id bits */
iap->ia_mode &= ~S_ISUID;
+ if (iap->ia_mode & S_IXGRP)
+ iap->ia_mode &= ~S_ISGID;
+ } else {
+ /* set ATTR_KILL_* bits and let VFS handle it */
+ iap->ia_valid |= (ATTR_KILL_SUID | ATTR_KILL_SGID);
}
- if ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid)
- iap->ia_mode &= ~S_ISGID;
- } else {
- /*
- * Revoke setuid/setgid bit on chown/chgrp
- */
- if ((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid)
- iap->ia_valid |= ATTR_KILL_SUID | ATTR_KILL_PRIV;
- if ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid)
- iap->ia_valid |= ATTR_KILL_SGID;
}
/* Change the attributes. */
* flushing the data to disk is handled separately below.
*/
- if (file->f_op->fsync == 0) {/* COMMIT3 cannot work */
+ if (!file->f_op->fsync) {/* COMMIT3 cannot work */
stable = 2;
*stablep = 2; /* FILE_SYNC */
}
}
#endif /* CONFIG_NFSD_V3 */
-__be32
+static __be32
nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *resfhp,
struct iattr *iap)
{
err = 0;
switch (type) {
case S_IFREG:
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
break;
case S_IFDIR:
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
break;
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
case S_IFSOCK:
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
host_err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev);
break;
default:
printk("nfsd: bad file type %o in nfsd_create\n", type);
host_err = -EINVAL;
+ goto out_nfserr;
}
- if (host_err < 0)
+ if (host_err < 0) {
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
goto out_nfserr;
+ }
if (EX_ISSYNC(fhp->fh_export)) {
err = nfserrno(nfsd_sync_dir(dentry));
err2 = nfsd_create_setattr(rqstp, resfhp, iap);
if (err2)
err = err2;
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
/*
* Update the file handle to get the new inode info.
*/
v_atime = verifier[1]&0x7fffffff;
}
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
if (dchild->d_inode) {
err = 0;
case NFS3_CREATE_GUARDED:
err = nfserr_exist;
}
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
goto out;
}
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
- if (host_err < 0)
+ if (host_err < 0) {
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
goto out_nfserr;
+ }
if (created)
*created = 1;
if (err2)
err = err2;
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
/*
* Update the filehandle to get the new inode info.
*/
if (iap && (iap->ia_valid & ATTR_MODE))
mode = iap->ia_mode & S_IALLUGO;
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
+
if (unlikely(path[plen] != 0)) {
char *path_alloced = kmalloc(plen+1, GFP_KERNEL);
if (path_alloced == NULL)
err = nfserrno(host_err);
fh_unlock(fhp);
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
+
cerr = fh_compose(resfhp, fhp->fh_export, dnew, fhp);
dput(dnew);
if (err==0) err = cerr;
dold = tfhp->fh_dentry;
dest = dold->d_inode;
+ host_err = mnt_want_write(tfhp->fh_export->ex_path.mnt);
+ if (host_err) {
+ err = nfserrno(host_err);
+ goto out_dput;
+ }
host_err = vfs_link(dold, dirp, dnew);
if (!host_err) {
if (EX_ISSYNC(ffhp->fh_export)) {
else
err = nfserrno(host_err);
}
-
+ mnt_drop_write(tfhp->fh_export->ex_path.mnt);
+out_dput:
dput(dnew);
out_unlock:
fh_unlock(ffhp);
if (ndentry == trap)
goto out_dput_new;
-#ifdef MSNFS
- if ((ffhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
+ if (svc_msnfs(ffhp) &&
((atomic_read(&odentry->d_count) > 1)
|| (atomic_read(&ndentry->d_count) > 1))) {
host_err = -EPERM;
- } else
-#endif
+ goto out_dput_new;
+ }
+
+ host_err = -EXDEV;
+ if (ffhp->fh_export->ex_path.mnt != tfhp->fh_export->ex_path.mnt)
+ goto out_dput_new;
+ host_err = mnt_want_write(ffhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_dput_new;
+
host_err = vfs_rename(fdir, odentry, tdir, ndentry);
if (!host_err && EX_ISSYNC(tfhp->fh_export)) {
host_err = nfsd_sync_dir(tdentry);
host_err = nfsd_sync_dir(fdentry);
}
+ mnt_drop_write(ffhp->fh_export->ex_path.mnt);
+
out_dput_new:
dput(ndentry);
out_dput_old:
if (!type)
type = rdentry->d_inode->i_mode & S_IFMT;
+ host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (host_err)
+ goto out_nfserr;
+
if (type != S_IFDIR) { /* It's UNLINK */
#ifdef MSNFS
if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
dput(rdentry);
if (host_err)
- goto out_nfserr;
+ goto out_drop;
if (EX_ISSYNC(fhp->fh_export))
host_err = nfsd_sync_dir(dentry);
+out_drop:
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
out_nfserr:
err = nfserrno(host_err);
out:
inode->i_mode,
IS_IMMUTABLE(inode)? " immut" : "",
IS_APPEND(inode)? " append" : "",
- IS_RDONLY(inode)? " ro" : "");
+ __mnt_is_readonly(exp->ex_path.mnt)? " ro" : "");
dprintk(" owner %d/%d user %d/%d\n",
inode->i_uid, inode->i_gid, current->fsuid, current->fsgid);
#endif
*/
if (!(acc & MAY_LOCAL_ACCESS))
if (acc & (MAY_WRITE | MAY_SATTR | MAY_TRUNC)) {
- if (exp_rdonly(rqstp, exp) || IS_RDONLY(inode))
+ if (exp_rdonly(rqstp, exp) ||
+ __mnt_is_readonly(exp->ex_path.mnt))
return nfserr_rofs;
if (/* (acc & MAY_WRITE) && */ IS_IMMUTABLE(inode))
return nfserr_perm;
} else
size = 0;
+ error = mnt_want_write(fhp->fh_export->ex_path.mnt);
+ if (error)
+ goto getout;
if (size)
error = vfs_setxattr(fhp->fh_dentry, name, value, size, 0);
else {
error = 0;
}
}
+ mnt_drop_write(fhp->fh_export->ex_path.mnt);
getout:
kfree(value);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff