#include <rev_endian_fs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/dirent.h>
#include <sys/fcntl.h>
#include <sys/ubc.h>
#include <sys/quota.h>
#include <kern/thread.h>
#include <sys/vm.h>
#include <miscfs/specfs/specdev.h>
#include <ufs/ufs/lockf.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
#if REV_ENDIAN_FS
#include <ufs/ufs/ufs_byte_order.h>
#include <architecture/byte_order.h>
#endif
static int ufs_chmod __P((struct vnode *, int, struct ucred *, struct proc *));
static int ufs_chown
__P((struct vnode *, uid_t, gid_t, struct ucred *, struct proc *));
union _qcvt {
int64_t qcvt;
int32_t val[2];
};
#define SETHIGH(q, h) { \
union _qcvt tmp; \
tmp.qcvt = (q); \
tmp.val[_QUAD_HIGHWORD] = (h); \
(q) = tmp.qcvt; \
}
#define SETLOW(q, l) { \
union _qcvt tmp; \
tmp.qcvt = (q); \
tmp.val[_QUAD_LOWWORD] = (l); \
(q) = tmp.qcvt; \
}
int
ufs_create(ap)
struct vop_create_args *ap;
{
int error;
if (error =
ufs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
ap->a_dvp, ap->a_vpp, ap->a_cnp))
return (error);
return (0);
}
int
ufs_mknod(ap)
struct vop_mknod_args *ap;
{
struct vattr *vap = ap->a_vap;
struct vnode **vpp = ap->a_vpp;
struct inode *ip;
int error;
if (error =
ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, vpp, ap->a_cnp))
return (error);
ip = VTOI(*vpp);
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
ip->i_rdev = vap->va_rdev;
}
vput(*vpp);
(*vpp)->v_type = VNON;
vgone(*vpp);
*vpp = 0;
return (0);
}
int
ufs_open(ap)
struct vop_open_args *ap;
{
if ((VTOI(ap->a_vp)->i_flags & APPEND) &&
(ap->a_mode & (FWRITE | O_APPEND)) == FWRITE)
return (EPERM);
return (0);
}
int
ufs_close(ap)
struct vop_close_args *ap;
{
register struct vnode *vp = ap->a_vp;
register struct inode *ip = VTOI(vp);
simple_lock(&vp->v_interlock);
if ((!UBCISVALID(vp) && vp->v_usecount > 1)
|| (UBCISVALID(vp) && ubc_isinuse(vp, 1)))
ITIMES(ip, &time, &time);
simple_unlock(&vp->v_interlock);
if (!VOP_ISLOCKED(vp)) {
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, ap->a_p);
cluster_push(vp);
VOP_UNLOCK(vp, 0, ap->a_p);
}
return (0);
}
int
ufs_access(ap)
struct vop_access_args *ap;
{
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct ucred *cred = ap->a_cred;
mode_t mask, mode = ap->a_mode;
register gid_t *gp;
int i, error;
if (mode & VWRITE) {
switch (vp->v_type) {
case VDIR:
case VLNK:
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
#if QUOTA
if (error = getinoquota(ip))
return (error);
#endif
break;
}
}
if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
return (EPERM);
if (cred->cr_uid == 0)
return (0);
mask = 0;
if (cred->cr_uid == ip->i_uid) {
if (mode & VEXEC)
mask |= S_IXUSR;
if (mode & VREAD)
mask |= S_IRUSR;
if (mode & VWRITE)
mask |= S_IWUSR;
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
}
for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
if (ip->i_gid == *gp) {
if (mode & VEXEC)
mask |= S_IXGRP;
if (mode & VREAD)
mask |= S_IRGRP;
if (mode & VWRITE)
mask |= S_IWGRP;
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
}
if (mode & VEXEC)
mask |= S_IXOTH;
if (mode & VREAD)
mask |= S_IROTH;
if (mode & VWRITE)
mask |= S_IWOTH;
return ((ip->i_mode & mask) == mask ? 0 : EACCES);
}
int
ufs_getattr(ap)
struct vop_getattr_args *ap;
{
register struct vnode *vp = ap->a_vp;
register struct inode *ip = VTOI(vp);
register struct vattr *vap = ap->a_vap;
int devBlockSize=0;
ITIMES(ip, &time, &time);
vap->va_fsid = ip->i_dev;
vap->va_fileid = ip->i_number;
vap->va_mode = ip->i_mode & ~IFMT;
vap->va_nlink = ip->i_nlink;
vap->va_uid = ip->i_uid;
vap->va_gid = ip->i_gid;
vap->va_rdev = (dev_t)ip->i_rdev;
vap->va_size = ip->i_din.di_size;
vap->va_atime.tv_sec = ip->i_atime;
vap->va_atime.tv_nsec = ip->i_atimensec;
vap->va_mtime.tv_sec = ip->i_mtime;
vap->va_mtime.tv_nsec = ip->i_mtimensec;
vap->va_ctime.tv_sec = ip->i_ctime;
vap->va_ctime.tv_nsec = ip->i_ctimensec;
vap->va_flags = ip->i_flags;
vap->va_gen = ip->i_gen;
if (vp->v_type == VBLK)
vap->va_blocksize = BLKDEV_IOSIZE;
else if (vp->v_type == VCHR)
vap->va_blocksize = MAXPHYSIO;
else
vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
VOP_DEVBLOCKSIZE(ip->i_devvp, &devBlockSize);
vap->va_bytes = dbtob((u_quad_t)ip->i_blocks, devBlockSize);
vap->va_type = vp->v_type;
vap->va_filerev = ip->i_modrev;
return (0);
}
int
ufs_setattr(ap)
struct vop_setattr_args *ap;
{
struct vattr *vap = ap->a_vap;
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct ucred *cred = ap->a_cred;
struct proc *p = ap->a_p;
struct timeval atimeval, mtimeval;
int error;
if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
(vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
return (EINVAL);
}
if (vap->va_flags != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
if (cred->cr_uid != ip->i_uid &&
(error = suser(cred, &p->p_acflag)))
return (error);
if (cred->cr_uid == 0) {
if ((ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) &&
securelevel > 0)
return (EPERM);
ip->i_flags = vap->va_flags;
} else {
if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND) ||
(vap->va_flags & UF_SETTABLE) != vap->va_flags)
return (EPERM);
ip->i_flags &= SF_SETTABLE;
ip->i_flags |= (vap->va_flags & UF_SETTABLE);
}
ip->i_flag |= IN_CHANGE;
if (vap->va_flags & (IMMUTABLE | APPEND))
return (0);
}
if (ip->i_flags & (IMMUTABLE | APPEND))
return (EPERM);
if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, p))
return (error);
}
if (vap->va_size != VNOVAL) {
switch (vp->v_type) {
case VDIR:
return (EISDIR);
case VLNK:
case VREG:
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
break;
}
if (error = VOP_TRUNCATE(vp, vap->va_size, 0, cred, p))
return (error);
}
ip = VTOI(vp);
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
if (cred->cr_uid != ip->i_uid &&
(error = suser(cred, &p->p_acflag)) &&
((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
(error = VOP_ACCESS(vp, VWRITE, cred, p))))
return (error);
if (vap->va_atime.tv_sec != VNOVAL)
ip->i_flag |= IN_ACCESS;
if (vap->va_mtime.tv_sec != VNOVAL)
ip->i_flag |= IN_CHANGE | IN_UPDATE;
atimeval.tv_sec = vap->va_atime.tv_sec;
atimeval.tv_usec = vap->va_atime.tv_nsec / 1000;
mtimeval.tv_sec = vap->va_mtime.tv_sec;
mtimeval.tv_usec = vap->va_mtime.tv_nsec / 1000;
if (error = VOP_UPDATE(vp, &atimeval, &mtimeval, 1))
return (error);
}
error = 0;
if (vap->va_mode != (mode_t)VNOVAL) {
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return (EROFS);
error = ufs_chmod(vp, (int)vap->va_mode, cred, p);
}
return (error);
}
static int
ufs_chmod(vp, mode, cred, p)
register struct vnode *vp;
register int mode;
register struct ucred *cred;
struct proc *p;
{
register struct inode *ip = VTOI(vp);
int error;
if (cred->cr_uid != ip->i_uid &&
(error = suser(cred, &p->p_acflag)))
return (error);
if (cred->cr_uid) {
if (vp->v_type != VDIR && (mode & S_ISTXT))
return (EFTYPE);
if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
return (EPERM);
}
ip->i_mode &= ~ALLPERMS;
ip->i_mode |= (mode & ALLPERMS);
ip->i_flag |= IN_CHANGE;
return (0);
}
static int
ufs_chown(vp, uid, gid, cred, p)
register struct vnode *vp;
uid_t uid;
gid_t gid;
struct ucred *cred;
struct proc *p;
{
register struct inode *ip = VTOI(vp);
uid_t ouid;
gid_t ogid;
int error = 0;
#if QUOTA
register int i;
int64_t change;
int devBlockSize=0;
#endif
if (uid == (uid_t)VNOVAL)
uid = ip->i_uid;
if (gid == (gid_t)VNOVAL)
gid = ip->i_gid;
if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
(gid != ip->i_gid && !groupmember((gid_t)gid, cred))) &&
(error = suser(cred, &p->p_acflag)))
return (error);
ogid = ip->i_gid;
ouid = ip->i_uid;
#if QUOTA
if (error = getinoquota(ip))
return (error);
if (ouid == uid) {
dqrele(vp, ip->i_dquot[USRQUOTA]);
ip->i_dquot[USRQUOTA] = NODQUOT;
}
if (ogid == gid) {
dqrele(vp, ip->i_dquot[GRPQUOTA]);
ip->i_dquot[GRPQUOTA] = NODQUOT;
}
VOP_DEVBLOCKSIZE(ip->i_devvp, &devBlockSize);
change = dbtob((int64_t)ip->i_blocks, devBlockSize);
(void) chkdq(ip, -change, cred, CHOWN);
(void) chkiq(ip, -1, cred, CHOWN);
for (i = 0; i < MAXQUOTAS; i++) {
dqrele(vp, ip->i_dquot[i]);
ip->i_dquot[i] = NODQUOT;
}
#endif
ip->i_gid = gid;
ip->i_uid = uid;
#if QUOTA
if ((error = getinoquota(ip)) == 0) {
if (ouid == uid) {
dqrele(vp, ip->i_dquot[USRQUOTA]);
ip->i_dquot[USRQUOTA] = NODQUOT;
}
if (ogid == gid) {
dqrele(vp, ip->i_dquot[GRPQUOTA]);
ip->i_dquot[GRPQUOTA] = NODQUOT;
}
if ((error = chkdq(ip, change, cred, CHOWN)) == 0) {
if ((error = chkiq(ip, 1, cred, CHOWN)) == 0)
goto good;
else
(void) chkdq(ip, -change, cred, CHOWN|FORCE);
}
for (i = 0; i < MAXQUOTAS; i++) {
dqrele(vp, ip->i_dquot[i]);
ip->i_dquot[i] = NODQUOT;
}
}
ip->i_gid = ogid;
ip->i_uid = ouid;
if (getinoquota(ip) == 0) {
if (ouid == uid) {
dqrele(vp, ip->i_dquot[USRQUOTA]);
ip->i_dquot[USRQUOTA] = NODQUOT;
}
if (ogid == gid) {
dqrele(vp, ip->i_dquot[GRPQUOTA]);
ip->i_dquot[GRPQUOTA] = NODQUOT;
}
(void) chkdq(ip, change, cred, FORCE|CHOWN);
(void) chkiq(ip, 1, cred, FORCE|CHOWN);
(void) getinoquota(ip);
}
return (error);
good:
if (getinoquota(ip))
panic("chown: lost quota");
#endif
if (ouid != uid || ogid != gid)
ip->i_flag |= IN_CHANGE;
if (ouid != uid && cred->cr_uid != 0)
ip->i_mode &= ~ISUID;
if (ogid != gid && cred->cr_uid != 0)
ip->i_mode &= ~ISGID;
return (0);
}
int
ufs_ioctl(ap)
struct vop_ioctl_args *ap;
{
switch (ap->a_command) {
case 1:
{ register struct inode *ip;
register struct vnode *vp;
register struct fs *fs;
register struct radvisory *ra;
int devBlockSize = 0;
int error;
vp = ap->a_vp;
VOP_LEASE(vp, ap->a_p, ap->a_cred, LEASE_READ);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, ap->a_p);
ra = (struct radvisory *)(ap->a_data);
ip = VTOI(vp);
fs = ip->i_fs;
if ((u_int64_t)ra->ra_offset >= ip->i_size) {
VOP_UNLOCK(vp, 0, ap->a_p);
return (EFBIG);
}
VOP_DEVBLOCKSIZE(ip->i_devvp, &devBlockSize);
error = advisory_read(vp, ip->i_size, ra->ra_offset, ra->ra_count, devBlockSize);
VOP_UNLOCK(vp, 0, ap->a_p);
return (error);
}
default:
return (ENOTTY);
}
}
int
ufs_select(ap)
struct vop_select_args *ap;
{
return (1);
}
int
ufs_mmap(ap)
struct vop_mmap_args *ap;
{
return (EINVAL);
}
int
ufs_seek(ap)
struct vop_seek_args *ap;
{
return (0);
}
int
ufs_remove(ap)
struct vop_remove_args *ap;
{
struct inode *ip;
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
int error;
ip = VTOI(vp);
if ((ip->i_flags & (IMMUTABLE | APPEND)) ||
(VTOI(dvp)->i_flags & APPEND)) {
error = EPERM;
goto out;
}
if (ap->a_cnp->cn_flags & NODELETEBUSY) {
if ((!UBCISVALID(vp) && vp->v_usecount > 1)
|| (UBCISVALID(vp) && ubc_isinuse(vp, 1))) {
error = EBUSY;
goto out;
}
}
if ((error = ufs_dirremove(dvp, ap->a_cnp)) == 0) {
ip->i_nlink--;
ip->i_flag |= IN_CHANGE;
}
if (dvp != vp)
VOP_UNLOCK(vp, 0, ap->a_cnp->cn_proc);
(void) ubc_uncache(vp);
vrele(vp);
vput(dvp);
return (error);
out:
if (dvp == vp)
vrele(vp);
else
vput(vp);
vput(dvp);
return (error);
}
int
ufs_link(ap)
struct vop_link_args *ap;
{
struct vnode *vp = ap->a_vp;
struct vnode *tdvp = ap->a_tdvp;
struct componentname *cnp = ap->a_cnp;
struct proc *p = cnp->cn_proc;
struct inode *ip;
struct timeval tv;
int error;
#if DIAGNOSTIC
if ((cnp->cn_flags & HASBUF) == 0)
panic("ufs_link: no name");
#endif
if (tdvp->v_mount != vp->v_mount) {
VOP_ABORTOP(tdvp, cnp);
error = EXDEV;
goto out2;
}
if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE, p))) {
VOP_ABORTOP(tdvp, cnp);
goto out2;
}
ip = VTOI(vp);
if ((nlink_t)ip->i_nlink >= LINK_MAX) {
VOP_ABORTOP(tdvp, cnp);
error = EMLINK;
goto out1;
}
if (ip->i_flags & (IMMUTABLE | APPEND)) {
VOP_ABORTOP(tdvp, cnp);
error = EPERM;
goto out1;
}
ip->i_nlink++;
ip->i_flag |= IN_CHANGE;
tv = time;
error = VOP_UPDATE(vp, &tv, &tv, 1);
if (!error)
error = ufs_direnter(ip, tdvp, cnp);
if (error) {
ip->i_nlink--;
ip->i_flag |= IN_CHANGE;
}
FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
out1:
if (tdvp != vp)
VOP_UNLOCK(vp, 0, p);
out2:
vput(tdvp);
return (error);
}
int
ufs_whiteout(ap)
struct vop_whiteout_args *ap;
{
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct direct newdir;
int error;
switch (ap->a_flags) {
case LOOKUP:
if (dvp->v_mount->mnt_maxsymlinklen > 0)
return (0);
return (EOPNOTSUPP);
case CREATE:
#if DIAGNOSTIC
if ((cnp->cn_flags & SAVENAME) == 0)
panic("ufs_whiteout: missing name");
if (dvp->v_mount->mnt_maxsymlinklen <= 0)
panic("ufs_whiteout: old format filesystem");
#endif
newdir.d_ino = WINO;
newdir.d_namlen = cnp->cn_namelen;
bcopy(cnp->cn_nameptr, newdir.d_name, (unsigned)cnp->cn_namelen + 1);
newdir.d_type = DT_WHT;
error = ufs_direnter2(dvp, &newdir, cnp->cn_cred, cnp->cn_proc);
break;
case DELETE:
#if DIAGNOSTIC
if (dvp->v_mount->mnt_maxsymlinklen <= 0)
panic("ufs_whiteout: old format filesystem");
#endif
cnp->cn_flags &= ~DOWHITEOUT;
error = ufs_dirremove(dvp, cnp);
break;
}
if (cnp->cn_flags & HASBUF) {
FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
cnp->cn_flags &= ~HASBUF;
}
return (error);
}
int
ufs_rename(ap)
struct vop_rename_args *ap;
{
struct vnode *tvp = ap->a_tvp;
register struct vnode *tdvp = ap->a_tdvp;
struct vnode *fvp = ap->a_fvp;
struct vnode *fdvp = ap->a_fdvp;
struct componentname *tcnp = ap->a_tcnp;
struct componentname *fcnp = ap->a_fcnp;
struct proc *p = fcnp->cn_proc;
struct inode *ip, *xp, *dp;
struct dirtemplate dirbuf;
struct timeval tv;
int doingdirectory = 0, oldparent = 0, newparent = 0;
int error = 0;
u_char namlen;
#if DIAGNOSTIC
if ((tcnp->cn_flags & HASBUF) == 0 ||
(fcnp->cn_flags & HASBUF) == 0)
panic("ufs_rename: no name");
#endif
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
abortit:
VOP_ABORTOP(tdvp, tcnp);
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
VOP_ABORTOP(fdvp, fcnp);
vrele(fdvp);
vrele(fvp);
return (error);
}
if (tvp && ((VTOI(tvp)->i_flags & (IMMUTABLE | APPEND)) ||
(VTOI(tdvp)->i_flags & APPEND))) {
error = EPERM;
goto abortit;
}
if (fvp == tvp) {
if (fvp->v_type == VDIR) {
error = EINVAL;
goto abortit;
}
VOP_ABORTOP(tdvp, tcnp);
vput(tdvp);
vput(tvp);
vrele(fdvp);
vrele(fvp);
fcnp->cn_flags &= ~MODMASK;
fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
if ((fcnp->cn_flags & SAVESTART) == 0)
panic("ufs_rename: lost from startdir");
fcnp->cn_nameiop = DELETE;
(void) relookup(fdvp, &fvp, fcnp);
return (VOP_REMOVE(fdvp, fvp, fcnp));
}
if (error = vn_lock(fvp, LK_EXCLUSIVE, p))
goto abortit;
dp = VTOI(fdvp);
ip = VTOI(fvp);
if ((ip->i_flags & (IMMUTABLE | APPEND)) || (dp->i_flags & APPEND)) {
VOP_UNLOCK(fvp, 0, p);
error = EPERM;
goto abortit;
}
if ((ip->i_mode & IFMT) == IFDIR) {
if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
dp == ip || (fcnp->cn_flags&ISDOTDOT) ||
(ip->i_flag & IN_RENAME)) {
VOP_UNLOCK(fvp, 0, p);
error = EINVAL;
goto abortit;
}
ip->i_flag |= IN_RENAME;
oldparent = dp->i_number;
doingdirectory++;
}
vrele(fdvp);
dp = VTOI(tdvp);
xp = NULL;
if (tvp)
xp = VTOI(tvp);
ip->i_nlink++;
ip->i_flag |= IN_CHANGE;
tv = time;
if (error = VOP_UPDATE(fvp, &tv, &tv, 1)) {
VOP_UNLOCK(fvp, 0, p);
goto bad;
}
error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc);
VOP_UNLOCK(fvp, 0, p);
if (oldparent != dp->i_number)
newparent = dp->i_number;
if (doingdirectory && newparent) {
if (error)
goto bad;
if (xp != NULL)
vput(tvp);
if (error = ufs_checkpath(ip, dp, tcnp->cn_cred))
goto out;
if ((tcnp->cn_flags & SAVESTART) == 0)
panic("ufs_rename: lost to startdir");
if (error = relookup(tdvp, &tvp, tcnp))
goto out;
dp = VTOI(tdvp);
xp = NULL;
if (tvp)
xp = VTOI(tvp);
}
if (xp == NULL) {
if (dp->i_dev != ip->i_dev)
panic("rename: EXDEV");
if (doingdirectory && newparent) {
if ((nlink_t)dp->i_nlink >= LINK_MAX) {
error = EMLINK;
goto bad;
}
dp->i_nlink++;
dp->i_flag |= IN_CHANGE;
if (error = VOP_UPDATE(tdvp, &tv, &tv, 1))
goto bad;
}
if (error = ufs_direnter(ip, tdvp, tcnp)) {
if (doingdirectory && newparent) {
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
(void)VOP_UPDATE(tdvp, &tv, &tv, 1);
}
goto bad;
}
vput(tdvp);
} else {
if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
panic("rename: EXDEV");
if (xp->i_number == ip->i_number)
panic("rename: same file");
if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
tcnp->cn_cred->cr_uid != dp->i_uid &&
xp->i_uid != tcnp->cn_cred->cr_uid) {
error = EPERM;
goto bad;
}
if ((xp->i_mode&IFMT) == IFDIR) {
if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
xp->i_nlink > 2) {
error = ENOTEMPTY;
goto bad;
}
if (!doingdirectory) {
error = ENOTDIR;
goto bad;
}
cache_purge(tdvp);
} else if (doingdirectory) {
error = EISDIR;
goto bad;
}
if (error = ufs_dirrewrite(dp, ip, tcnp))
goto bad;
if (doingdirectory && !newparent) {
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
}
vput(tdvp);
xp->i_nlink--;
if (doingdirectory) {
if (--xp->i_nlink != 0)
panic("rename: linked directory");
error = VOP_TRUNCATE(tvp, (off_t)0, IO_SYNC,
tcnp->cn_cred, tcnp->cn_proc);
}
xp->i_flag |= IN_CHANGE;
vput(tvp);
xp = NULL;
}
fcnp->cn_flags &= ~MODMASK;
fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
if ((fcnp->cn_flags & SAVESTART) == 0)
panic("ufs_rename: lost from startdir");
(void) relookup(fdvp, &fvp, fcnp);
if (fvp != NULL) {
xp = VTOI(fvp);
dp = VTOI(fdvp);
} else {
if (doingdirectory)
panic("rename: lost dir entry");
vrele(ap->a_fvp);
return (0);
}
if (xp != ip) {
if (doingdirectory)
panic("rename: lost dir entry");
} else {
if (doingdirectory && newparent) {
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
sizeof (struct dirtemplate), (off_t)0,
UIO_SYSSPACE, IO_NODELOCKED,
tcnp->cn_cred, (int *)0, (struct proc *)0);
if (error == 0) {
# if (BYTE_ORDER == LITTLE_ENDIAN)
if (fvp->v_mount->mnt_maxsymlinklen <= 0)
namlen = dirbuf.dotdot_type;
else
namlen = dirbuf.dotdot_namlen;
# else
namlen = dirbuf.dotdot_namlen;
# endif
if (namlen != 2 ||
dirbuf.dotdot_name[0] != '.' ||
dirbuf.dotdot_name[1] != '.') {
ufs_dirbad(xp, (doff_t)12,
"rename: mangled dir");
} else {
dirbuf.dotdot_ino = newparent;
(void) vn_rdwr(UIO_WRITE, fvp,
(caddr_t)&dirbuf,
sizeof (struct dirtemplate),
(off_t)0, UIO_SYSSPACE,
IO_NODELOCKED|IO_SYNC,
tcnp->cn_cred, (int *)0,
(struct proc *)0);
cache_purge(fdvp);
}
}
}
error = ufs_dirremove(fdvp, fcnp);
if (!error) {
xp->i_nlink--;
xp->i_flag |= IN_CHANGE;
}
xp->i_flag &= ~IN_RENAME;
}
if (dp)
vput(fdvp);
if (xp)
vput(fvp);
vrele(ap->a_fvp);
return (error);
bad:
if (xp)
vput(ITOV(xp));
vput(ITOV(dp));
out:
if (doingdirectory)
ip->i_flag &= ~IN_RENAME;
if (vn_lock(fvp, LK_EXCLUSIVE, p) == 0) {
ip->i_nlink--;
ip->i_flag |= IN_CHANGE;
vput(fvp);
} else
vrele(fvp);
return (error);
}
static struct dirtemplate mastertemplate = {
0, 12, DT_DIR, 1, ".",
0, DIRBLKSIZ - 12, DT_DIR, 2, ".."
};
static struct odirtemplate omastertemplate = {
0, 12, 1, ".",
0, DIRBLKSIZ - 12, 2, ".."
};
int
ufs_mkdir(ap)
struct vop_mkdir_args *ap;
{
register struct vnode *dvp = ap->a_dvp;
register struct vattr *vap = ap->a_vap;
register struct componentname *cnp = ap->a_cnp;
register struct inode *ip, *dp;
struct vnode *tvp;
struct dirtemplate dirtemplate, *dtp;
struct timeval tv;
int error, dmode;
#if DIAGNOSTIC
if ((cnp->cn_flags & HASBUF) == 0)
panic("ufs_mkdir: no name");
#endif
dp = VTOI(dvp);
if ((nlink_t)dp->i_nlink >= LINK_MAX) {
error = EMLINK;
goto out;
}
dmode = vap->va_mode & 0777;
dmode |= IFDIR;
if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp))
goto out;
ip = VTOI(tvp);
ip->i_uid = cnp->cn_cred->cr_uid;
ip->i_gid = dp->i_gid;
#if QUOTA
if ((error = getinoquota(ip)) ||
(error = chkiq(ip, 1, cnp->cn_cred, 0))) {
_FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
VOP_VFREE(tvp, ip->i_number, dmode);
vput(tvp);
vput(dvp);
return (error);
}
#endif
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
ip->i_mode = dmode;
tvp->v_type = VDIR;
ip->i_nlink = 2;
if (cnp->cn_flags & ISWHITEOUT)
ip->i_flags |= UF_OPAQUE;
tv = time;
error = VOP_UPDATE(tvp, &tv, &tv, 1);
dp->i_nlink++;
dp->i_flag |= IN_CHANGE;
if (error = VOP_UPDATE(dvp, &tv, &tv, 1))
goto bad;
if (dvp->v_mount->mnt_maxsymlinklen > 0)
dtp = &mastertemplate;
else
dtp = (struct dirtemplate *)&omastertemplate;
dirtemplate = *dtp;
dirtemplate.dot_ino = ip->i_number;
dirtemplate.dotdot_ino = dp->i_number;
error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0);
if (error) {
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
goto bad;
}
if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
panic("ufs_mkdir: blksize");
else {
ip->i_size = DIRBLKSIZ;
ip->i_flag |= IN_CHANGE;
}
if (error = ufs_direnter(ip, dvp, cnp)) {
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
}
bad:
if (error) {
ip->i_nlink = 0;
ip->i_flag |= IN_CHANGE;
vput(tvp);
} else
*ap->a_vpp = tvp;
out:
FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
vput(dvp);
return (error);
}
int
ufs_rmdir(ap)
struct vop_rmdir_args *ap;
{
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct inode *ip, *dp;
int error;
ip = VTOI(vp);
dp = VTOI(dvp);
if (dp == ip) {
vrele(dvp);
vput(vp);
return (EINVAL);
}
error = 0;
if (ip->i_nlink != 2 ||
!ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) {
error = ENOTEMPTY;
goto out;
}
if ((dp->i_flags & APPEND) || (ip->i_flags & (IMMUTABLE | APPEND))) {
error = EPERM;
goto out;
}
if (error = ufs_dirremove(dvp, cnp))
goto out;
dp->i_nlink--;
dp->i_flag |= IN_CHANGE;
cache_purge(dvp);
vput(dvp);
dvp = NULL;
ip->i_nlink -= 2;
error = VOP_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred,
cnp->cn_proc);
cache_purge(ITOV(ip));
out:
if (dvp)
vput(dvp);
vput(vp);
return (error);
}
int
ufs_symlink(ap)
struct vop_symlink_args *ap;
{
register struct vnode *vp, **vpp = ap->a_vpp;
register struct inode *ip;
int len, error;
if (error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
vpp, ap->a_cnp))
return (error);
vp = *vpp;
len = strlen(ap->a_target);
if (len < vp->v_mount->mnt_maxsymlinklen) {
ip = VTOI(vp);
bcopy(ap->a_target, (char *)ip->i_shortlink, len);
ip->i_size = len;
ip->i_flag |= IN_CHANGE | IN_UPDATE;
} else
error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
UIO_SYSSPACE, IO_NODELOCKED, ap->a_cnp->cn_cred, (int *)0,
(struct proc *)0);
vput(vp);
return (error);
}
int
ufs_readdir(ap)
struct vop_readdir_args *ap;
{
register struct uio *uio = ap->a_uio;
int error;
size_t count, lost;
off_t off = uio->uio_offset;
count = uio->uio_resid;
count -= (uio->uio_offset + count) & (DIRBLKSIZ -1);
if (count <= 0)
return (EINVAL);
lost = uio->uio_resid - count;
uio->uio_resid = count;
uio->uio_iov->iov_len = count;
# if (BYTE_ORDER == LITTLE_ENDIAN)
if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) {
error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred);
} else {
struct dirent *dp, *edp;
struct uio auio;
struct iovec aiov;
caddr_t dirbuf;
int readcnt;
u_char tmp;
auio = *uio;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_segflg = UIO_SYSSPACE;
aiov.iov_len = count;
MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK);
aiov.iov_base = dirbuf;
error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred);
if (error == 0) {
readcnt = count - auio.uio_resid;
edp = (struct dirent *)&dirbuf[readcnt];
for (dp = (struct dirent *)dirbuf; dp < edp; ) {
tmp = dp->d_namlen;
dp->d_namlen = dp->d_type;
dp->d_type = tmp;
if (dp->d_reclen > 0) {
dp = (struct dirent *)
((char *)dp + dp->d_reclen);
} else {
error = EIO;
break;
}
}
if (dp >= edp)
error = uiomove(dirbuf, readcnt, uio);
}
FREE(dirbuf, M_TEMP);
}
# else
error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred);
# endif
if (!error && ap->a_ncookies != NULL) {
struct dirent* dpStart;
struct dirent* dpEnd;
struct dirent* dp;
int ncookies;
u_long *cookies;
u_long *cookiep;
if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
panic("ufs_readdir: unexpected uio from NFS server");
dpStart = (struct dirent *)
(uio->uio_iov->iov_base - (uio->uio_offset - off));
dpEnd = (struct dirent *) uio->uio_iov->iov_base;
for (dp = dpStart, ncookies = 0;
dp < dpEnd && dp->d_reclen != 0;
dp = (struct dirent *)((caddr_t)dp + dp->d_reclen))
ncookies++;
MALLOC(cookies, u_long *, ncookies * sizeof(u_long), M_TEMP,
M_WAITOK);
for (dp = dpStart, cookiep = cookies;
dp < dpEnd;
dp = (struct dirent *)((caddr_t) dp + dp->d_reclen)) {
off += dp->d_reclen;
*cookiep++ = (u_long) off;
}
*ap->a_ncookies = ncookies;
*ap->a_cookies = cookies;
}
uio->uio_resid += lost;
if (ap->a_eofflag)
*ap->a_eofflag = VTOI(ap->a_vp)->i_size <= uio->uio_offset;
return (error);
}
int
ufs_readlink(ap)
struct vop_readlink_args *ap;
{
register struct vnode *vp = ap->a_vp;
register struct inode *ip = VTOI(vp);
int isize;
isize = ip->i_size;
if (isize < vp->v_mount->mnt_maxsymlinklen) {
uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
return (0);
}
return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
}
int
ufs_abortop(ap)
struct vop_abortop_args *ap;
{
if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
FREE_ZONE(ap->a_cnp->cn_pnbuf, ap->a_cnp->cn_pnlen, M_NAMEI);
return (0);
}
int
ufs_lock(ap)
struct vop_lock_args *ap;
{
struct vnode *vp = ap->a_vp;
if (VTOI(vp) == (struct inode *)NULL)
panic("inode in vnode is null\n");
return (lockmgr(&VTOI(vp)->i_lock, ap->a_flags, &vp->v_interlock,
ap->a_p));
}
int
ufs_unlock(ap)
struct vop_unlock_args *ap;
{
struct vnode *vp = ap->a_vp;
return (lockmgr(&VTOI(vp)->i_lock, ap->a_flags | LK_RELEASE,
&vp->v_interlock, ap->a_p));
}
int
ufs_islocked(ap)
struct vop_islocked_args *ap;
{
return (lockstatus(&VTOI(ap->a_vp)->i_lock));
}
int
ufs_strategy(ap)
struct vop_strategy_args *ap;
{
register struct buf *bp = ap->a_bp;
register struct vnode *vp = bp->b_vp;
register struct inode *ip;
int error;
ip = VTOI(vp);
if ( !(bp->b_flags & B_VECTORLIST)) {
if (vp->v_type == VBLK || vp->v_type == VCHR)
panic("ufs_strategy: spec");
if (bp->b_flags & B_PAGELIST) {
#if 1
if (bp->b_blkno == bp->b_lblkno) {
if (error = VOP_BMAP(vp, bp->b_lblkno, NULL,
&bp->b_blkno, NULL)) {
bp->b_error = error;
bp->b_flags |= B_ERROR;
biodone(bp);
return (error);
}
}
#endif
error = cluster_bp(bp);
vp = ip->i_devvp;
bp->b_dev = vp->v_rdev;
return (error);
}
if (bp->b_blkno == bp->b_lblkno) {
if (error =
VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL)) {
bp->b_error = error;
bp->b_flags |= B_ERROR;
biodone(bp);
return (error);
}
if ((long)bp->b_blkno == -1)
clrbuf(bp);
}
if ((long)bp->b_blkno == -1) {
biodone(bp);
return (0);
}
}
vp = ip->i_devvp;
bp->b_dev = vp->v_rdev;
VOCALL (vp->v_op, VOFFSET(vop_strategy), ap);
return (0);
}
int
ufs_print(ap)
struct vop_print_args *ap;
{
register struct vnode *vp = ap->a_vp;
register struct inode *ip = VTOI(vp);
printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number,
major(ip->i_dev), minor(ip->i_dev));
#if FIFO
if (vp->v_type == VFIFO)
fifo_printinfo(vp);
#endif
lockmgr_printinfo(&ip->i_lock);
printf("\n");
return (0);
}
int
ufsspec_read(ap)
struct vop_read_args *ap;
{
VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap));
}
int
ufsspec_write(ap)
struct vop_write_args *ap;
{
VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap));
}
int
ufsspec_close(ap)
struct vop_close_args *ap;
{
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
simple_lock(&vp->v_interlock);
if (ap->a_vp->v_usecount > 1)
ITIMES(ip, &time, &time);
simple_unlock(&vp->v_interlock);
return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap));
}
#if FIFO
int
ufsfifo_read(ap)
struct vop_read_args *ap;
{
extern int (**fifo_vnodeop_p)(void *);
VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap));
}
int
ufsfifo_write(ap)
struct vop_write_args *ap;
{
extern int (**fifo_vnodeop_p)(void *);
VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap));
}
ufsfifo_close(ap)
struct vop_close_args *ap;
{
extern int (**fifo_vnodeop_p)(void *);
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
simple_lock(&vp->v_interlock);
if (ap->a_vp->v_usecount > 1)
ITIMES(ip, &time, &time);
simple_unlock(&vp->v_interlock);
return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap));
}
#endif
ufs_pathconf(ap)
struct vop_pathconf_args *ap;
{
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
return (0);
case _PC_NAME_MAX:
*ap->a_retval = NAME_MAX;
return (0);
case _PC_PATH_MAX:
*ap->a_retval = PATH_MAX;
return (0);
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
return (0);
case _PC_CHOWN_RESTRICTED:
*ap->a_retval = 1;
return (0);
case _PC_NO_TRUNC:
*ap->a_retval = 1;
return (0);
default:
return (EINVAL);
}
}
int
ufs_advlock(ap)
struct vop_advlock_args *ap;
{
register struct inode *ip = VTOI(ap->a_vp);
register struct flock *fl = ap->a_fl;
register struct lockf *lock;
off_t start, end;
int error;
if (ip->i_lockf == (struct lockf *)0) {
if (ap->a_op != F_SETLK) {
fl->l_type = F_UNLCK;
return (0);
}
}
switch (fl->l_whence) {
case SEEK_SET:
case SEEK_CUR:
start = fl->l_start;
break;
case SEEK_END:
start = ip->i_size + fl->l_start;
break;
default:
return (EINVAL);
}
if (start < 0)
return (EINVAL);
if (fl->l_len == 0)
end = -1;
else
end = start + fl->l_len - 1;
MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK);
lock->lf_start = start;
lock->lf_end = end;
lock->lf_id = ap->a_id;
lock->lf_inode = ip;
lock->lf_type = fl->l_type;
lock->lf_next = (struct lockf *)0;
TAILQ_INIT(&lock->lf_blkhd);
lock->lf_flags = ap->a_flags;
switch(ap->a_op) {
case F_SETLK:
return (lf_setlock(lock));
case F_UNLCK:
error = lf_clearlock(lock);
FREE(lock, M_LOCKF);
return (error);
case F_GETLK:
error = lf_getlock(lock, fl);
FREE(lock, M_LOCKF);
return (error);
default:
_FREE(lock, M_LOCKF);
return (EINVAL);
}
}
int
ufs_vinit(mntp, specops, fifoops, vpp)
struct mount *mntp;
int (**specops)();
int (**fifoops)();
struct vnode **vpp;
{
struct proc *p = current_proc();
struct inode *ip;
struct vnode *vp, *nvp;
vp = *vpp;
ip = VTOI(vp);
switch(vp->v_type = IFTOVT(ip->i_mode)) {
case VCHR:
case VBLK:
vp->v_op = specops;
if (nvp = checkalias(vp, ip->i_rdev, mntp)) {
nvp->v_data = vp->v_data;
vp->v_data = NULL;
vp->v_op = spec_vnodeop_p;
vrele(vp);
vgone(vp);
vp = nvp;
ip->i_vnode = vp;
}
break;
case VFIFO:
#if FIFO
vp->v_op = fifoops;
break;
#else
return (EOPNOTSUPP);
#endif
case VREG:
#if 0
ubc_info_init(vp);
#endif
break;
default:
break;
}
if (ip->i_number == ROOTINO)
vp->v_flag |= VROOT;
SETHIGH(ip->i_modrev, time.tv_sec);
SETLOW(ip->i_modrev, time.tv_usec * 4294);
*vpp = vp;
return (0);
}
int
ufs_makeinode(mode, dvp, vpp, cnp)
int mode;
struct vnode *dvp;
struct vnode **vpp;
struct componentname *cnp;
{
register struct inode *ip, *pdir;
struct timeval tv;
struct vnode *tvp;
int error;
pdir = VTOI(dvp);
#if DIAGNOSTIC
if ((cnp->cn_flags & HASBUF) == 0)
panic("ufs_makeinode: no name");
#endif
*vpp = NULL;
if ((mode & IFMT) == 0)
mode |= IFREG;
if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) {
_FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
vput(dvp);
return (error);
}
ip = VTOI(tvp);
ip->i_gid = pdir->i_gid;
if ((mode & IFMT) == IFLNK)
ip->i_uid = pdir->i_uid;
else
ip->i_uid = cnp->cn_cred->cr_uid;
#if QUOTA
if ((error = getinoquota(ip)) ||
(error = chkiq(ip, 1, cnp->cn_cred, 0))) {
_FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
VOP_VFREE(tvp, ip->i_number, mode);
vput(tvp);
vput(dvp);
return (error);
}
#endif
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
ip->i_mode = mode;
tvp->v_type = IFTOVT(mode);
ip->i_nlink = 1;
if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
suser(cnp->cn_cred, NULL))
ip->i_mode &= ~ISGID;
if (cnp->cn_flags & ISWHITEOUT)
ip->i_flags |= UF_OPAQUE;
if (UBCINFOMISSING(tvp) || UBCINFORECLAIMED(tvp))
ubc_info_init(tvp);
tv = time;
if (error = VOP_UPDATE(tvp, &tv, &tv, 1))
goto bad;
if (error = ufs_direnter(ip, dvp, cnp))
goto bad;
if ((cnp->cn_flags & SAVESTART) == 0)
FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
vput(dvp);
*vpp = tvp;
return (0);
bad:
_FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
vput(dvp);
ip->i_nlink = 0;
ip->i_flag |= IN_CHANGE;
vput(tvp);
return (error);
}