mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
Slightly restructure extattr_get_vp() so that there's only one entry point
to VOP_GETEXTATTR(). This simplifies code flow when inserting MAC hooks. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
This commit is contained in:
parent
63976b9f34
commit
7a0776e477
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=95296
@ -4689,10 +4689,10 @@ static int
|
||||
extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
void *data, size_t nbytes, struct thread *td)
|
||||
{
|
||||
struct uio auio;
|
||||
struct uio auio, *auiop;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
size_t size;
|
||||
size_t size, *sizep;
|
||||
int error;
|
||||
|
||||
VOP_LEASE(vp, td, td->td_ucred, LEASE_READ);
|
||||
@ -4703,6 +4703,9 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
* pointer, they don't want to receive the data, just the
|
||||
* maximum read length.
|
||||
*/
|
||||
auiop = NULL;
|
||||
sizep = NULL;
|
||||
cnt = 0;
|
||||
if (data != NULL) {
|
||||
aiov.iov_base = data;
|
||||
aiov.iov_len = nbytes;
|
||||
@ -4716,16 +4719,20 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
auio.uio_rw = UIO_READ;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_td = td;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, &auio,
|
||||
NULL, td->td_ucred, td);
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
|
||||
td->td_ucred, td);
|
||||
|
||||
if (auiop != NULL) {
|
||||
cnt -= auio.uio_resid;
|
||||
td->td_retval[0] = cnt;
|
||||
} else {
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, NULL,
|
||||
&size, td->td_ucred, td);
|
||||
} else
|
||||
td->td_retval[0] = size;
|
||||
}
|
||||
|
||||
done:
|
||||
VOP_UNLOCK(vp, 0, td);
|
||||
return (error);
|
||||
|
@ -4689,10 +4689,10 @@ static int
|
||||
extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
void *data, size_t nbytes, struct thread *td)
|
||||
{
|
||||
struct uio auio;
|
||||
struct uio auio, *auiop;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
size_t size;
|
||||
size_t size, *sizep;
|
||||
int error;
|
||||
|
||||
VOP_LEASE(vp, td, td->td_ucred, LEASE_READ);
|
||||
@ -4703,6 +4703,9 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
* pointer, they don't want to receive the data, just the
|
||||
* maximum read length.
|
||||
*/
|
||||
auiop = NULL;
|
||||
sizep = NULL;
|
||||
cnt = 0;
|
||||
if (data != NULL) {
|
||||
aiov.iov_base = data;
|
||||
aiov.iov_len = nbytes;
|
||||
@ -4716,16 +4719,20 @@ extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
auio.uio_rw = UIO_READ;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_td = td;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, &auio,
|
||||
NULL, td->td_ucred, td);
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
|
||||
td->td_ucred, td);
|
||||
|
||||
if (auiop != NULL) {
|
||||
cnt -= auio.uio_resid;
|
||||
td->td_retval[0] = cnt;
|
||||
} else {
|
||||
error = VOP_GETEXTATTR(vp, attrnamespace, attrname, NULL,
|
||||
&size, td->td_ucred, td);
|
||||
} else
|
||||
td->td_retval[0] = size;
|
||||
}
|
||||
|
||||
done:
|
||||
VOP_UNLOCK(vp, 0, td);
|
||||
return (error);
|
||||
|
Loading…
Reference in New Issue
Block a user