Author: pjd
Date: Thu Sep  5 00:19:30 2013
New Revision: 255222
URL: http://svnweb.freebsd.org/changeset/base/255222

Log:
  Style fixes.

Modified:
  head/sys/kern/vfs_syscalls.c

Modified: head/sys/kern/vfs_syscalls.c
==============================================================================
--- head/sys/kern/vfs_syscalls.c        Thu Sep  5 00:17:38 2013        
(r255221)
+++ head/sys/kern/vfs_syscalls.c        Thu Sep  5 00:19:30 2013        
(r255222)
@@ -181,8 +181,8 @@ sys_quotactl(td, uap)
        } */ *uap;
 {
        struct mount *mp;
-       int error;
        struct nameidata nd;
+       int error;
 
        AUDIT_ARG_CMD(uap->cmd);
        AUDIT_ARG_UID(uap->uid);
@@ -198,7 +198,7 @@ sys_quotactl(td, uap)
        vput(nd.ni_vp);
        error = vfs_busy(mp, 0);
        vfs_rel(mp);
-       if (error)
+       if (error != 0)
                return (error);
        error = VFS_QUOTACTL(mp, uap->cmd, uap->uid, uap->arg);
 
@@ -291,13 +291,13 @@ kern_statfs(struct thread *td, char *pat
 {
        struct mount *mp;
        struct statfs *sp, sb;
-       int error;
        struct nameidata nd;
+       int error;
 
        NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,
            pathseg, path, td);
        error = namei(&nd);
-       if (error)
+       if (error != 0)
                return (error);
        mp = nd.ni_vp->v_mount;
        vfs_ref(mp);
@@ -305,11 +305,11 @@ kern_statfs(struct thread *td, char *pat
        vput(nd.ni_vp);
        error = vfs_busy(mp, 0);
        vfs_rel(mp);
-       if (error)
+       if (error != 0)
                return (error);
 #ifdef MAC
        error = mac_mount_check_stat(td->td_ucred, mp);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        /*
@@ -320,7 +320,7 @@ kern_statfs(struct thread *td, char *pat
        sp->f_namemax = NAME_MAX;
        sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
        error = VFS_STATFS(mp, sp);
-       if (error)
+       if (error != 0)
                goto out;
        if (priv_check(td, PRIV_VFS_GENERATION)) {
                bcopy(sp, &sb, sizeof(sb));
@@ -373,7 +373,7 @@ kern_fstatfs(struct thread *td, int fd, 
        AUDIT_ARG_FD(fd);
        error = getvnode(td->td_proc->p_fd, fd,
            cap_rights_init(&rights, CAP_FSTATFS), &fp);
-       if (error)
+       if (error != 0)
                return (error);
        vp = fp->f_vnode;
        vn_lock(vp, LK_SHARED | LK_RETRY);
@@ -391,11 +391,11 @@ kern_fstatfs(struct thread *td, int fd, 
        }
        error = vfs_busy(mp, 0);
        vfs_rel(mp);
-       if (error)
+       if (error != 0)
                return (error);
 #ifdef MAC
        error = mac_mount_check_stat(td->td_ucred, mp);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        /*
@@ -406,7 +406,7 @@ kern_fstatfs(struct thread *td, int fd, 
        sp->f_namemax = NAME_MAX;
        sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
        error = VFS_STATFS(mp, sp);
-       if (error)
+       if (error != 0)
                goto out;
        if (priv_check(td, PRIV_VFS_GENERATION)) {
                bcopy(sp, &sb, sizeof(sb));
@@ -525,7 +525,7 @@ kern_getfsstat(struct thread *td, struct
                                bcopy(sp, sfsp, sizeof(*sp));
                        else /* if (bufseg == UIO_USERSPACE) */ {
                                error = copyout(sp, sfsp, sizeof(*sp));
-                               if (error) {
+                               if (error != 0) {
                                        vfs_unbusy(mp);
                                        return (error);
                                }
@@ -570,7 +570,7 @@ freebsd4_statfs(td, uap)
        int error;
 
        error = kern_statfs(td, uap->path, UIO_USERSPACE, &sf);
-       if (error)
+       if (error != 0)
                return (error);
        cvtstatfs(&sf, &osb);
        return (copyout(&osb, uap->buf, sizeof(osb)));
@@ -598,7 +598,7 @@ freebsd4_fstatfs(td, uap)
        int error;
 
        error = kern_fstatfs(td, uap->fd, &sf);
-       if (error)
+       if (error != 0)
                return (error);
        cvtstatfs(&sf, &osb);
        return (copyout(&osb, uap->buf, sizeof(osb)));
@@ -669,10 +669,10 @@ freebsd4_fhstatfs(td, uap)
        int error;
 
        error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
-       if (error)
+       if (error != 0)
                return (error);
        error = kern_fhstatfs(td, fh, &sf);
-       if (error)
+       if (error != 0)
                return (error);
        cvtstatfs(&sf, &osb);
        return (copyout(&osb, uap->buf, sizeof(osb)));
@@ -751,12 +751,12 @@ sys_fchdir(td, uap)
                        continue;
                error = VFS_ROOT(mp, LK_SHARED, &tdp);
                vfs_unbusy(mp);
-               if (error)
+               if (error != 0)
                        break;
                vput(vp);
                vp = tdp;
        }
-       if (error) {
+       if (error != 0) {
                vput(vp);
                return (error);
        }
@@ -792,9 +792,9 @@ int
 kern_chdir(struct thread *td, char *path, enum uio_seg pathseg)
 {
        register struct filedesc *fdp = td->td_proc->p_fd;
-       int error;
        struct nameidata nd;
        struct vnode *vp;
+       int error;
 
        NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,
            pathseg, path, td);
@@ -871,21 +871,23 @@ sys_chroot(td, uap)
                char *path;
        } */ *uap;
 {
-       int error;
        struct nameidata nd;
+       int error;
 
        error = priv_check(td, PRIV_VFS_CHROOT);
-       if (error)
+       if (error != 0)
                return (error);
        NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | AUDITVNODE1,
            UIO_USERSPACE, uap->path, td);
        error = namei(&nd);
-       if (error)
+       if (error != 0)
                goto error;
-       if ((error = change_dir(nd.ni_vp, td)) != 0)
+       error = change_dir(nd.ni_vp, td);
+       if (error != 0)
                goto e_vunlock;
 #ifdef MAC
-       if ((error = mac_vnode_check_chroot(td->td_ucred, nd.ni_vp)))
+       error = mac_vnode_check_chroot(td->td_ucred, nd.ni_vp);
+       if (error != 0)
                goto e_vunlock;
 #endif
        VOP_UNLOCK(nd.ni_vp, 0);
@@ -909,18 +911,19 @@ change_dir(vp, td)
        struct vnode *vp;
        struct thread *td;
 {
+#ifdef MAC
        int error;
+#endif
 
        ASSERT_VOP_LOCKED(vp, "change_dir(): vp not locked");
        if (vp->v_type != VDIR)
                return (ENOTDIR);
 #ifdef MAC
        error = mac_vnode_check_chdir(td->td_ucred, vp);
-       if (error)
+       if (error == 0)
                return (error);
 #endif
-       error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
-       return (error);
+       return (VOP_ACCESS(vp, VEXEC, td->td_ucred, td));
 }
 
 /*
@@ -942,7 +945,7 @@ change_root(vp, td)
        if (chroot_allow_open_directories == 0 ||
            (chroot_allow_open_directories == 1 && fdp->fd_rdir != rootvnode)) {
                error = chroot_refuse_vdir_fds(fdp);
-               if (error) {
+               if (error != 0) {
                        FILEDESC_XUNLOCK(fdp);
                        return (error);
                }
@@ -1050,10 +1053,11 @@ kern_openat(struct thread *td, int fd, c
        struct filedesc *fdp = p->p_fd;
        struct file *fp;
        struct vnode *vp;
-       int cmode;
-       int indx = -1, error;
        struct nameidata nd;
        cap_rights_t rights;
+       int cmode, error, indx;
+
+       indx = -1;
 
        AUDIT_ARG_FFLAGS(flags);
        AUDIT_ARG_MODE(mode);
@@ -1077,7 +1081,7 @@ kern_openat(struct thread *td, int fd, c
         * Allocate the file descriptor, but don't install a descriptor yet.
         */
        error = falloc_noinstall(td, &fp);
-       if (error)
+       if (error != 0)
                return (error);
        /*
         * An extra reference on `fp' has been held for us by
@@ -1085,12 +1089,12 @@ kern_openat(struct thread *td, int fd, c
         */
        /* Set the flags early so the finit in devfs can pick them up. */
        fp->f_flag = flags & FMASK;
-       cmode = ((mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT;
+       cmode = ((mode & ~fdp->fd_cmask) & ALLPERMS) & ~S_ISTXT;
        NDINIT_ATRIGHTS(&nd, LOOKUP, FOLLOW | AUDITVNODE1, pathseg, path, fd,
            &rights, td);
        td->td_dupfd = -1;              /* XXX check for fdopen */
        error = vn_open(&nd, &flags, cmode, fp);
-       if (error) {
+       if (error != 0) {
                /*
                 * If the vn_open replaced the method vector, something
                 * wonderous happened deep below and we just pass it up
@@ -1134,14 +1138,14 @@ kern_openat(struct thread *td, int fd, c
        if (fp->f_ops == &badfileops) {
                KASSERT(vp->v_type != VFIFO, ("Unexpected fifo."));
                fp->f_seqcount = 1;
-               finit(fp, (flags & FMASK) | (fp->f_flag & FHASLOCK), 
DTYPE_VNODE,
-                   vp, &vnops);
+               finit(fp, (flags & FMASK) | (fp->f_flag & FHASLOCK),
+                   DTYPE_VNODE, vp, &vnops);
        }
 
        VOP_UNLOCK(vp, 0);
        if (flags & O_TRUNC) {
                error = fo_truncate(fp, 0, td->td_ucred, td);
-               if (error)
+               if (error != 0)
                        goto bad;
        }
 success:
@@ -1258,10 +1262,9 @@ kern_mknodat(struct thread *td, int fd, 
        struct vnode *vp;
        struct mount *mp;
        struct vattr vattr;
-       int error;
-       int whiteout = 0;
        struct nameidata nd;
        cap_rights_t rights;
+       int error, whiteout = 0;
 
        AUDIT_ARG_MODE(mode);
        AUDIT_ARG_DEV(dev);
@@ -1284,7 +1287,7 @@ kern_mknodat(struct thread *td, int fd, 
                error = EINVAL;
                break;
        }
-       if (error)
+       if (error != 0)
                return (error);
 restart:
        bwillwrite();
@@ -1337,7 +1340,7 @@ restart:
                error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp,
                    &nd.ni_cnd, &vattr);
 #endif
-       if (!error) {
+       if (error == 0) {
                if (whiteout)
                        error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE);
                else {
@@ -1402,9 +1405,9 @@ kern_mkfifoat(struct thread *td, int fd,
 {
        struct mount *mp;
        struct vattr vattr;
+       struct nameidata nd;
        cap_rights_t rights;
        int error;
-       struct nameidata nd;
 
        AUDIT_ARG_MODE(mode);
 restart:
@@ -1435,7 +1438,7 @@ restart:
 #ifdef MAC
        error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
            &vattr);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
@@ -1519,13 +1522,13 @@ can_hardlink(struct vnode *vp, struct uc
 
        if (hardlink_check_uid && cred->cr_uid != va.va_uid) {
                error = priv_check_cred(cred, PRIV_VFS_LINK, 0);
-               if (error)
+               if (error != 0)
                        return (error);
        }
 
        if (hardlink_check_gid && !groupmember(va.va_gid, cred)) {
                error = priv_check_cred(cred, PRIV_VFS_LINK, 0);
-               if (error)
+               if (error != 0)
                        return (error);
        }
 
@@ -1644,8 +1647,8 @@ kern_symlinkat(struct thread *td, char *
        struct mount *mp;
        struct vattr vattr;
        char *syspath;
-       int error;
        struct nameidata nd;
+       int error;
        cap_rights_t rights;
 
        if (segflg == UIO_SYSSPACE) {
@@ -1685,7 +1688,7 @@ restart:
        vattr.va_type = VLNK;
        error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
            &vattr);
-       if (error)
+       if (error != 0)
                goto out2;
 #endif
        error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr, syspath);
@@ -1713,16 +1716,16 @@ sys_undelete(td, uap)
                char *path;
        } */ *uap;
 {
-       int error;
        struct mount *mp;
        struct nameidata nd;
+       int error;
 
 restart:
        bwillwrite();
        NDINIT(&nd, DELETE, LOCKPARENT | DOWHITEOUT | AUDITVNODE1,
            UIO_USERSPACE, uap->path, td);
        error = namei(&nd);
-       if (error)
+       if (error != 0)
                return (error);
 
        if (nd.ni_vp != NULLVP || !(nd.ni_cnd.cn_flags & ISWHITEOUT)) {
@@ -1804,10 +1807,10 @@ kern_unlinkat(struct thread *td, int fd,
 {
        struct mount *mp;
        struct vnode *vp;
-       int error;
        struct nameidata nd;
        struct stat sb;
        cap_rights_t rights;
+       int error;
 
 restart:
        bwillwrite();
@@ -1847,7 +1850,7 @@ restart:
 #ifdef MAC
                error = mac_vnode_check_unlink(td->td_ucred, nd.ni_dvp, vp,
                    &nd.ni_cnd);
-               if (error)
+               if (error != 0)
                        goto out;
 #endif
                vfs_notify_upper(vp, VFS_NOTIFY_UPPER_UNLINK);
@@ -1959,8 +1962,8 @@ vn_access(vp, user_flags, cred, td)
        struct ucred    *cred;
        struct thread   *td;
 {
-       int error;
        accmode_t accmode;
+       int error;
 
        /* Flags == 0 means only check for existence. */
        error = 0;
@@ -1974,7 +1977,7 @@ vn_access(vp, user_flags, cred, td)
                        accmode |= VEXEC;
 #ifdef MAC
                error = mac_vnode_check_access(cred, vp, accmode);
-               if (error)
+               if (error != 0)
                        return (error);
 #endif
                if ((accmode & VWRITE) == 0 || (error = vn_writechk(vp)) == 0)
@@ -2121,11 +2124,10 @@ ostat(td, uap)
        int error;
 
        error = kern_stat(td, uap->path, UIO_USERSPACE, &sb);
-       if (error)
+       if (error != 0)
                return (error);
        cvtstat(&sb, &osb);
-       error = copyout(&osb, uap->ub, sizeof (osb));
-       return (error);
+       return (copyout(&osb, uap->ub, sizeof (osb)));
 }
 
 /*
@@ -2150,11 +2152,10 @@ olstat(td, uap)
        int error;
 
        error = kern_lstat(td, uap->path, UIO_USERSPACE, &sb);
-       if (error)
+       if (error != 0)
                return (error);
        cvtstat(&sb, &osb);
-       error = copyout(&osb, uap->ub, sizeof (osb));
-       return (error);
+       return (copyout(&osb, uap->ub, sizeof (osb)));
 }
 
 /*
@@ -2269,7 +2270,7 @@ kern_statat_vnhook(struct thread *td, in
        if ((error = namei(&nd)) != 0)
                return (error);
        error = vn_stat(nd.ni_vp, &sb, td->td_ucred, NOCRED, td);
-       if (!error) {
+       if (error == 0) {
                SDT_PROBE(vfs, , stat, mode, path, sb.st_mode, 0, 0, 0);
                if (S_ISREG(sb.st_mode))
                        SDT_PROBE(vfs, , stat, reg, path, pathseg, 0, 0, 0);
@@ -2278,7 +2279,7 @@ kern_statat_vnhook(struct thread *td, in
        }
        NDFREE(&nd, NDF_ONLY_PNBUF);
        vput(nd.ni_vp);
-       if (error)
+       if (error != 0)
                return (error);
        *sbp = sb;
 #ifdef KTRACE
@@ -2330,6 +2331,7 @@ cvtnstat(sb, nsb)
        struct stat *sb;
        struct nstat *nsb;
 {
+
        bzero(nsb, sizeof *nsb);
        nsb->st_dev = sb->st_dev;
        nsb->st_ino = sb->st_ino;
@@ -2368,11 +2370,10 @@ sys_nstat(td, uap)
        int error;
 
        error = kern_stat(td, uap->path, UIO_USERSPACE, &sb);
-       if (error)
+       if (error != 0)
                return (error);
        cvtnstat(&sb, &nsb);
-       error = copyout(&nsb, uap->ub, sizeof (nsb));
-       return (error);
+       return (copyout(&nsb, uap->ub, sizeof (nsb)));
 }
 
 /*
@@ -2397,11 +2398,10 @@ sys_nlstat(td, uap)
        int error;
 
        error = kern_lstat(td, uap->path, UIO_USERSPACE, &sb);
-       if (error)
+       if (error != 0)
                return (error);
        cvtnstat(&sb, &nsb);
-       error = copyout(&nsb, uap->ub, sizeof (nsb));
-       return (error);
+       return (copyout(&nsb, uap->ub, sizeof (nsb)));
 }
 
 /*
@@ -2521,8 +2521,8 @@ kern_readlinkat(struct thread *td, int f
        struct vnode *vp;
        struct iovec aiov;
        struct uio auio;
-       int error;
        struct nameidata nd;
+       int error;
 
        if (count > IOSIZE_MAX)
                return (EINVAL);
@@ -2536,7 +2536,7 @@ kern_readlinkat(struct thread *td, int f
        vp = nd.ni_vp;
 #ifdef MAC
        error = mac_vnode_check_readlink(td->td_ucred, vp);
-       if (error) {
+       if (error != 0) {
                vput(vp);
                return (error);
        }
@@ -2569,9 +2569,9 @@ setfflags(td, vp, flags)
        struct vnode *vp;
        u_long flags;
 {
-       int error;
        struct mount *mp;
        struct vattr vattr;
+       int error;
 
        /* We can't support the value matching VNOVAL. */
        if (flags == VNOVAL)
@@ -2585,7 +2585,7 @@ setfflags(td, vp, flags)
         */
        if (vp->v_type == VCHR || vp->v_type == VBLK) {
                error = priv_check(td, PRIV_VFS_CHFLAGS_DEV);
-               if (error)
+               if (error != 0)
                        return (error);
        }
 
@@ -2738,9 +2738,9 @@ setfmode(td, cred, vp, mode)
        struct vnode *vp;
        int mode;
 {
-       int error;
        struct mount *mp;
        struct vattr vattr;
+       int error;
 
        if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
                return (error);
@@ -2833,10 +2833,9 @@ int
 kern_fchmodat(struct thread *td, int fd, char *path, enum uio_seg pathseg,
     mode_t mode, int flag)
 {
-       int error;
        struct nameidata nd;
-       int follow;
        cap_rights_t rights;
+       int error, follow;
 
        AUDIT_ARG_MODE(mode);
        follow = (flag & AT_SYMLINK_NOFOLLOW) ? NOFOLLOW : FOLLOW;
@@ -2888,9 +2887,9 @@ setfown(td, cred, vp, uid, gid)
        uid_t uid;
        gid_t gid;
 {
-       int error;
        struct mount *mp;
        struct vattr vattr;
+       int error;
 
        if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
                return (error);
@@ -3093,9 +3092,9 @@ setutimes(td, vp, ts, numtimes, nullflag
        int numtimes;
        int nullflag;
 {
-       int error, setbirthtime;
        struct mount *mp;
        struct vattr vattr;
+       int error, setbirthtime;
 
        if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
                return (error);
@@ -3218,8 +3217,8 @@ kern_lutimes(struct thread *td, char *pa
     struct timeval *tptr, enum uio_seg tptrseg)
 {
        struct timespec ts[2];
-       int error;
        struct nameidata nd;
+       int error;
 
        if ((error = getutimes(tptr, tptrseg, ts)) != 0)
                return (error);
@@ -3263,7 +3262,8 @@ kern_futimes(struct thread *td, int fd, 
        int error;
 
        AUDIT_ARG_FD(fd);
-       if ((error = getutimes(tptr, tptrseg, ts)) != 0)
+       error = getutimes(tptr, tptrseg, ts);
+       if (error != 0)
                return (error);
        error = getvnode(td->td_proc->p_fd, fd,
            cap_rights_init(&rights, CAP_FUTIMES), &fp);
@@ -3423,7 +3423,8 @@ sys_fsync(td, uap)
        if (error != 0)
                return (error);
        vp = fp->f_vnode;
-       if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
+       error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
+       if (error != 0)
                goto drop;
        if (MNT_SHARED_WRITES(mp) ||
            ((mp == NULL) && MNT_SHARED_WRITES(vp->v_mount))) {
@@ -3584,15 +3585,15 @@ kern_renameat(struct thread *td, int old
                    tond.ni_vp, fromnd.ni_dvp == tdvp, &tond.ni_cnd);
 #endif
 out:
-       if (!error) {
+       if (error == 0) {
                error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
-                                  tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
+                   tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
                NDFREE(&fromnd, NDF_ONLY_PNBUF);
                NDFREE(&tond, NDF_ONLY_PNBUF);
        } else {
                NDFREE(&fromnd, NDF_ONLY_PNBUF);
                NDFREE(&tond, NDF_ONLY_PNBUF);
-               if (tvp)
+               if (tvp != NULL)
                        vput(tvp);
                if (tdvp == tvp)
                        vrele(tdvp);
@@ -3660,9 +3661,9 @@ kern_mkdirat(struct thread *td, int fd, 
        struct mount *mp;
        struct vnode *vp;
        struct vattr vattr;
+       struct nameidata nd;
        cap_rights_t rights;
        int error;
-       struct nameidata nd;
 
        AUDIT_ARG_MODE(mode);
 restart:
@@ -3700,7 +3701,7 @@ restart:
 #ifdef MAC
        error = mac_vnode_check_create(td->td_ucred, nd.ni_dvp, &nd.ni_cnd,
            &vattr);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
@@ -3709,7 +3710,7 @@ out:
 #endif
        NDFREE(&nd, NDF_ONLY_PNBUF);
        vput(nd.ni_dvp);
-       if (!error)
+       if (error == 0)
                vput(nd.ni_vp);
        vn_finished_write(mp);
        return (error);
@@ -3746,9 +3747,9 @@ kern_rmdirat(struct thread *td, int fd, 
 {
        struct mount *mp;
        struct vnode *vp;
+       struct nameidata nd;
        cap_rights_t rights;
        int error;
-       struct nameidata nd;
 
 restart:
        bwillwrite();
@@ -3778,7 +3779,7 @@ restart:
 #ifdef MAC
        error = mac_vnode_check_unlink(td->td_ucred, nd.ni_dvp, vp,
            &nd.ni_cnd);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        if (vn_start_write(nd.ni_dvp, &mp, V_NOWAIT) != 0) {
@@ -3875,7 +3876,7 @@ unionread:
        loff = auio.uio_offset = foffset;
 #ifdef MAC
        error = mac_vnode_check_readdir(td->td_ucred, vp);
-       if (error) {
+       if (error != 0) {
                VOP_UNLOCK(vp, 0);
                foffset_unlock(fp, foffset, FOF_NOUPDATE);
                fdrop(fp, td);
@@ -3933,7 +3934,7 @@ unionread:
                }
                free(dirbuf, M_TEMP);
        }
-       if (error) {
+       if (error != 0) {
                VOP_UNLOCK(vp, 0);
                foffset_unlock(fp, foffset, 0);
                fdrop(fp, td);
@@ -3987,7 +3988,7 @@ sys_getdirentries(td, uap)
 
        error = kern_getdirentries(td, uap->fd, uap->buf, uap->count, &base,
            NULL, UIO_USERSPACE);
-       if (error)
+       if (error != 0)
                return (error);
        if (uap->basep != NULL)
                error = copyout(&base, uap->basep, sizeof(long));
@@ -4043,7 +4044,7 @@ unionread:
                error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, NULL,
                    NULL);
        foffset = auio.uio_offset;
-       if (error) {
+       if (error != 0) {
                VOP_UNLOCK(vp, 0);
                goto fail;
        }
@@ -4051,6 +4052,7 @@ unionread:
            (vp->v_vflag & VV_ROOT) &&
            (vp->v_mount->mnt_flag & MNT_UNION)) {
                struct vnode *tvp = vp;
+
                vp = vp->v_mount->mnt_vnodecovered;
                VREF(vp);
                fp->f_vnode = vp;
@@ -4087,6 +4089,7 @@ sys_getdents(td, uap)
        } */ *uap;
 {
        struct getdirentries_args ap;
+
        ap.fd = uap->fd;
        ap.buf = uap->buf;
        ap.count = uap->count;
@@ -4137,8 +4140,8 @@ sys_revoke(td, uap)
 {
        struct vnode *vp;
        struct vattr vattr;
-       int error;
        struct nameidata nd;
+       int error;
 
        NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1, UIO_USERSPACE,
            uap->path, td);
@@ -4152,15 +4155,15 @@ sys_revoke(td, uap)
        }
 #ifdef MAC
        error = mac_vnode_check_revoke(td->td_ucred, vp);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        error = VOP_GETATTR(vp, &vattr, td->td_ucred);
-       if (error)
+       if (error != 0)
                goto out;
        if (td->td_ucred->cr_uid != vattr.va_uid) {
                error = priv_check(td, PRIV_VFS_ADMIN);
-               if (error)
+               if (error != 0)
                        goto out;
        }
        if (vcount(vp) > 1)
@@ -4226,12 +4229,12 @@ sys_lgetfh(td, uap)
        int error;
 
        error = priv_check(td, PRIV_VFS_GETFH);
-       if (error)
+       if (error != 0)
                return (error);
        NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | AUDITVNODE1, UIO_USERSPACE,
            uap->fname, td);
        error = namei(&nd);
-       if (error)
+       if (error != 0)
                return (error);
        NDFREE(&nd, NDF_ONLY_PNBUF);
        vp = nd.ni_vp;
@@ -4239,9 +4242,8 @@ sys_lgetfh(td, uap)
        fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
        error = VOP_VPTOFH(vp, &fh.fh_fid);
        vput(vp);
-       if (error)
-               return (error);
-       error = copyout(&fh, uap->fhp, sizeof (fh));
+       if (error == 0)
+               error = copyout(&fh, uap->fhp, sizeof (fh));
        return (error);
 }
 
@@ -4262,12 +4264,12 @@ sys_getfh(td, uap)
        int error;
 
        error = priv_check(td, PRIV_VFS_GETFH);
-       if (error)
+       if (error != 0)
                return (error);
        NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1, UIO_USERSPACE,
            uap->fname, td);
        error = namei(&nd);
-       if (error)
+       if (error != 0)
                return (error);
        NDFREE(&nd, NDF_ONLY_PNBUF);
        vp = nd.ni_vp;
@@ -4275,9 +4277,8 @@ sys_getfh(td, uap)
        fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
        error = VOP_VPTOFH(vp, &fh.fh_fid);
        vput(vp);
-       if (error)
-               return (error);
-       error = copyout(&fh, uap->fhp, sizeof (fh));
+       if (error == 0)
+               error = copyout(&fh, uap->fhp, sizeof (fh));
        return (error);
 }
 
@@ -4310,7 +4311,7 @@ sys_fhopen(td, uap)
        int indx;
 
        error = priv_check(td, PRIV_VFS_FHOPEN);
-       if (error)
+       if (error != 0)
                return (error);
        indx = -1;
        fmode = FFLAGS(uap->flags);
@@ -4318,7 +4319,7 @@ sys_fhopen(td, uap)
        if (((fmode & (FREAD | FWRITE)) == 0) || (fmode & O_CREAT))
                return (EINVAL);
        error = copyin(uap->u_fhp, &fhp, sizeof(fhp));
-       if (error)
+       if (error != 0)
                return(error);
        /* find the mount point */
        mp = vfs_busyfs(&fhp.fh_fsid);
@@ -4327,11 +4328,11 @@ sys_fhopen(td, uap)
        /* now give me my vnode, it gets returned to me locked */
        error = VFS_FHTOVP(mp, &fhp.fh_fid, LK_EXCLUSIVE, &vp);
        vfs_unbusy(mp);
-       if (error)
+       if (error != 0)
                return (error);
 
        error = falloc_noinstall(td, &fp);
-       if (error) {
+       if (error != 0) {
                vput(vp);
                return (error);
        }
@@ -4344,7 +4345,7 @@ sys_fhopen(td, uap)
        td->td_dupfd = -1;
 #endif
        error = vn_open_vnode(vp, fmode, td->td_ucred, td, fp);
-       if (error) {
+       if (error != 0) {
                KASSERT(fp->f_ops == &badfileops,
                    ("VOP_OPEN in fhopen() set f_ops"));
                KASSERT(td->td_dupfd < 0,
@@ -4361,9 +4362,9 @@ sys_fhopen(td, uap)
        finit(fp, (fmode & FMASK) | (fp->f_flag & FHASLOCK), DTYPE_VNODE, vp,
            &vnops);
        VOP_UNLOCK(vp, 0);
-       if (fmode & O_TRUNC) {
+       if ((fmode & O_TRUNC) != 0) {
                error = fo_truncate(fp, 0, td->td_ucred, td);
-               if (error)
+               if (error != 0)
                        goto bad;
        }
 
@@ -4399,9 +4400,8 @@ sys_fhstat(td, uap)
        if (error != 0)
                return (error);
        error = kern_fhstat(td, fh, &sb);
-       if (error != 0)
-               return (error);
-       error = copyout(&sb, uap->sb, sizeof(sb));
+       if (error == 0)
+               error = copyout(&sb, uap->sb, sizeof(sb));
        return (error);
 }
 
@@ -4413,13 +4413,13 @@ kern_fhstat(struct thread *td, struct fh
        int error;
 
        error = priv_check(td, PRIV_VFS_FHSTAT);
-       if (error)
+       if (error != 0)
                return (error);
        if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL)
                return (ESTALE);
        error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp);
        vfs_unbusy(mp);
-       if (error)
+       if (error != 0)
                return (error);
        error = vn_stat(vp, sb, td->td_ucred, NOCRED, td);
        vput(vp);
@@ -4448,10 +4448,10 @@ sys_fhstatfs(td, uap)
        int error;
 
        error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
-       if (error)
+       if (error != 0)
                return (error);
        error = kern_fhstatfs(td, fh, &sf);
-       if (error)
+       if (error != 0)
                return (error);
        return (copyout(&sf, uap->buf, sizeof(sf)));
 }
@@ -4465,22 +4465,22 @@ kern_fhstatfs(struct thread *td, fhandle
        int error;
 
        error = priv_check(td, PRIV_VFS_FHSTATFS);
-       if (error)
+       if (error != 0)
                return (error);
        if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL)
                return (ESTALE);
        error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp);
-       if (error) {
+       if (error != 0) {
                vfs_unbusy(mp);
                return (error);
        }
        vput(vp);
        error = prison_canseemount(td->td_ucred, mp);
-       if (error)
+       if (error != 0)
                goto out;
 #ifdef MAC
        error = mac_mount_check_stat(td->td_ucred, mp);
-       if (error)
+       if (error != 0)
                goto out;
 #endif
        /*
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