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Incremental style improvements: more consistently avoid assignments

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in conditionals; remove some excess vertical whitespace; remove a
bug in the return handling of the delete_vp() case for MAC.

Spotted by:	bde
This commit is contained in:
Robert Watson 2002-10-10 13:59:58 +00:00
parent fd936e43a4
commit 2dba710ddb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=104776
2 changed files with 62 additions and 36 deletions
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49
sys/kern/vfs_extattr.c
View File

@ -3744,7 +3744,8 @@ extattrctl(td, uap)
if (uap->filename != NULL) {
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
uap->filename, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
filename_vp = nd.ni_vp;
NDFREE(&nd, NDF_NO_VP_RELE | NDF_NO_VP_UNLOCK);
@ -3752,7 +3753,8 @@ extattrctl(td, uap)
/* uap->path is always defined. */
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0) {
error = namei(&nd);
if (error) {
if (filename_vp != NULL)
vput(filename_vp);
return (error);
@ -3776,7 +3778,6 @@ extattrctl(td, uap)
*/
if (filename_vp != NULL)
vrele(filename_vp);
return (error);
}
@ -3800,7 +3801,8 @@ extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
ssize_t cnt;
int error;
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@ -3857,7 +3859,8 @@ extattr_set_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
error = extattr_set_vp((struct vnode *)fp->f_data, uap->attrnamespace,
@ -3887,7 +3890,8 @@ extattr_set_file(td, uap)
return (error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -3918,7 +3922,8 @@ extattr_set_link(td, uap)
return (error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4018,7 +4023,8 @@ extattr_get_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
error = extattr_get_vp((struct vnode *)fp->f_data, uap->attrnamespace,
@ -4048,7 +4054,8 @@ extattr_get_file(td, uap)
return (error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4079,7 +4086,8 @@ extattr_get_link(td, uap)
return (error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4107,7 +4115,8 @@ extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
struct mount *mp;
int error;
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@ -4115,11 +4124,15 @@ extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
#ifdef MAC
error = mac_check_vnode_setextattr(td->td_ucred, vp, attrnamespace,
attrname, NULL);
if (error)
goto done;
#endif
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL, td->td_ucred,
td);
#ifdef MAC
done:
#endif
VOP_UNLOCK(vp, 0, td);
vn_finished_write(mp);
return (error);
@ -4143,12 +4156,12 @@ extattr_delete_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
vp = (struct vnode *)fp->f_data;
error = extattr_delete_vp(vp, uap->attrnamespace, attrname, td);
fdrop(fp, td);
return (error);
}
@ -4171,12 +4184,12 @@ extattr_delete_file(td, uap)
return(error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
return(error);
}
@ -4199,12 +4212,12 @@ extattr_delete_link(td, uap)
return(error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
return(error);
}

49
sys/kern/vfs_syscalls.c
View File

@ -3744,7 +3744,8 @@ extattrctl(td, uap)
if (uap->filename != NULL) {
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
uap->filename, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
filename_vp = nd.ni_vp;
NDFREE(&nd, NDF_NO_VP_RELE | NDF_NO_VP_UNLOCK);
@ -3752,7 +3753,8 @@ extattrctl(td, uap)
/* uap->path is always defined. */
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0) {
error = namei(&nd);
if (error) {
if (filename_vp != NULL)
vput(filename_vp);
return (error);
@ -3776,7 +3778,6 @@ extattrctl(td, uap)
*/
if (filename_vp != NULL)
vrele(filename_vp);
return (error);
}
@ -3800,7 +3801,8 @@ extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
ssize_t cnt;
int error;
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@ -3857,7 +3859,8 @@ extattr_set_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
error = extattr_set_vp((struct vnode *)fp->f_data, uap->attrnamespace,
@ -3887,7 +3890,8 @@ extattr_set_file(td, uap)
return (error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -3918,7 +3922,8 @@ extattr_set_link(td, uap)
return (error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4018,7 +4023,8 @@ extattr_get_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
error = extattr_get_vp((struct vnode *)fp->f_data, uap->attrnamespace,
@ -4048,7 +4054,8 @@ extattr_get_file(td, uap)
return (error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4079,7 +4086,8 @@ extattr_get_link(td, uap)
return (error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return (error);
NDFREE(&nd, NDF_ONLY_PNBUF);
@ -4107,7 +4115,8 @@ extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
struct mount *mp;
int error;
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
if (error)
return (error);
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
@ -4115,11 +4124,15 @@ extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
#ifdef MAC
error = mac_check_vnode_setextattr(td->td_ucred, vp, attrnamespace,
attrname, NULL);
if (error)
goto done;
#endif
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL, td->td_ucred,
td);
#ifdef MAC
done:
#endif
VOP_UNLOCK(vp, 0, td);
vn_finished_write(mp);
return (error);
@ -4143,12 +4156,12 @@ extattr_delete_fd(td, uap)
if (error)
return (error);
if ((error = getvnode(td->td_proc->p_fd, uap->fd, &fp)) != 0)
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
if (error)
return (error);
vp = (struct vnode *)fp->f_data;
error = extattr_delete_vp(vp, uap->attrnamespace, attrname, td);
fdrop(fp, td);
return (error);
}
@ -4171,12 +4184,12 @@ extattr_delete_file(td, uap)
return(error);
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
return(error);
}
@ -4199,12 +4212,12 @@ extattr_delete_link(td, uap)
return(error);
NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td);
if ((error = namei(&nd)) != 0)
error = namei(&nd);
if (error)
return(error);
NDFREE(&nd, NDF_ONLY_PNBUF);
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
vrele(nd.ni_vp);
return(error);
}