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Differential D46709 Diff 143505 sys/kern/vfs_syscalls.c

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sys/kern/vfs_syscalls.c

Show First 20 Lines • Show All 1,579 Lines • ▼ Show 20 Lines
can_hardlink(struct vnode *vp, struct ucred *cred) can_hardlink(struct vnode *vp, struct ucred *cred)
{ {
struct vattr va; struct vattr va;
int error; int error;
if (!hardlink_check_uid && !hardlink_check_gid) if (!hardlink_check_uid && !hardlink_check_gid)
return (0); return (0);
error = VOP_GETATTR(vp, &va, cred); error = VOP_GETATTR(vp, 0, &va, cred);
if (error != 0) if (error != 0)
return (error); return (error);
if (hardlink_check_uid && cred->cr_uid != va.va_uid) { if (hardlink_check_uid && cred->cr_uid != va.va_uid) {
error = priv_check_cred(cred, PRIV_VFS_LINK); error = priv_check_cred(cred, PRIV_VFS_LINK);
if (error != 0) if (error != 0)
return (error); return (error);
} }
▲ Show 20 Lines • Show All 355 Lines • ▼ Show 20 Lines if ((error = namei(&nd)) != 0) {
if (error == EINVAL) if (error == EINVAL)
error = EPERM; error = EPERM;
goto fdout; goto fdout;
} }
vp = nd.ni_vp; vp = nd.ni_vp;
if (vp->v_type == VDIR && oldinum == 0) { if (vp->v_type == VDIR && oldinum == 0) {
error = EPERM; /* POSIX */ error = EPERM; /* POSIX */
} else if (oldinum != 0 && } else if (oldinum != 0 &&
((error = VOP_STAT(vp, &sb, td->td_ucred, NOCRED)) == 0) && ((error = VOP_STAT(vp, &sb, 0, td->td_ucred, NOCRED)) == 0) &&
sb.st_ino != oldinum) { sb.st_ino != oldinum) {
error = EIDRM; /* Identifier removed */ error = EIDRM; /* Identifier removed */
} else if (fp != NULL && fp->f_vnode != vp) { } else if (fp != NULL && fp->f_vnode != vp) {
if (VN_IS_DOOMED(fp->f_vnode)) if (VN_IS_DOOMED(fp->f_vnode))
error = EBADF; error = EBADF;
else else
error = EDEADLK; error = EDEADLK;
} else { } else {
▲ Show 20 Lines • Show All 501 Lines • ▼ Show 20 Lines NDINIT_ATRIGHTS(&nd, LOOKUP, at2cnpflags(flag, AT_RESOLVE_BENEATH |
AUDITVNODE1, pathseg, path, fd, &cap_fstat_rights); AUDITVNODE1, pathseg, path, fd, &cap_fstat_rights);
if ((error = namei(&nd)) != 0) { if ((error = namei(&nd)) != 0) {
if (error == ENOTDIR && if (error == ENOTDIR &&
(nd.ni_resflags & NIRES_EMPTYPATH) != 0) (nd.ni_resflags & NIRES_EMPTYPATH) != 0)
error = kern_fstat(td, fd, sbp); error = kern_fstat(td, fd, sbp);
return (error); return (error);
} }
error = VOP_STAT(nd.ni_vp, sbp, td->td_ucred, NOCRED); error = VOP_STAT(nd.ni_vp, sbp, 0, td->td_ucred, NOCRED);
NDFREE_PNBUF(&nd); NDFREE_PNBUF(&nd);
vput(nd.ni_vp); vput(nd.ni_vp);
#ifdef __STAT_TIME_T_EXT #ifdef __STAT_TIME_T_EXT
sbp->st_atim_ext = 0; sbp->st_atim_ext = 0;
sbp->st_mtim_ext = 0; sbp->st_mtim_ext = 0;
sbp->st_ctim_ext = 0; sbp->st_ctim_ext = 0;
sbp->st_btim_ext = 0; sbp->st_btim_ext = 0;
#endif #endif
▲ Show 20 Lines • Show All 732 Lines • ▼ Show 20 Linessetutimes(struct thread *td, struct vnode *vp, const struct timespec *ts,
setbirthtime = false; setbirthtime = false;
vattr.va_birthtime.tv_sec = VNOVAL; vattr.va_birthtime.tv_sec = VNOVAL;
vattr.va_birthtime.tv_nsec = 0; vattr.va_birthtime.tv_nsec = 0;
if ((error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH)) != 0) if ((error = vn_start_write(vp, &mp, V_WAIT | V_PCATCH)) != 0)
return (error); return (error);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
if (numtimes < 3 && VOP_GETATTR(vp, &vattr, td->td_ucred) == 0 && if (numtimes < 3 && VOP_GETATTR(vp, 0, &vattr, td->td_ucred) == 0 &&
timespeccmp(&ts[1], &vattr.va_birthtime, < )) timespeccmp(&ts[1], &vattr.va_birthtime, < ))
setbirthtime = true; setbirthtime = true;
VATTR_NULL(&vattr); VATTR_NULL(&vattr);
vattr.va_atime = ts[0]; vattr.va_atime = ts[0];
vattr.va_mtime = ts[1]; vattr.va_mtime = ts[1];
if (setbirthtime) if (setbirthtime)
vattr.va_birthtime = ts[1]; vattr.va_birthtime = ts[1];
if (numtimes > 2) if (numtimes > 2)
▲ Show 20 Lines • Show All 1,063 Lines • ▼ Show 20 Lines if (vp->v_type != VCHR || vp->v_rdev == NULL) {
error = EINVAL; error = EINVAL;
goto out; goto out;
} }
#ifdef MAC #ifdef MAC
error = mac_vnode_check_revoke(td->td_ucred, vp); error = mac_vnode_check_revoke(td->td_ucred, vp);
if (error != 0) if (error != 0)
goto out; goto out;
#endif #endif
error = VOP_GETATTR(vp, &vattr, td->td_ucred); error = VOP_GETATTR(vp, 0, &vattr, td->td_ucred);
if (error != 0) if (error != 0)
goto out; goto out;
if (td->td_ucred->cr_uid != vattr.va_uid) { if (td->td_ucred->cr_uid != vattr.va_uid) {
error = priv_check(td, PRIV_VFS_ADMIN); error = priv_check(td, PRIV_VFS_ADMIN);
if (error != 0) if (error != 0)
goto out; goto out;
} }
if (devfs_usecount(vp) > 0) if (devfs_usecount(vp) > 0)
▲ Show 20 Lines • Show All 375 Lines • ▼ Show 20 Lineskern_fhstat(struct thread *td, struct fhandle fh, struct stat *sb)
if (error != 0) if (error != 0)
return (error); return (error);
if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL) if ((mp = vfs_busyfs(&fh.fh_fsid)) == NULL)
return (ESTALE); return (ESTALE);
error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp); error = VFS_FHTOVP(mp, &fh.fh_fid, LK_EXCLUSIVE, &vp);
vfs_unbusy(mp); vfs_unbusy(mp);
if (error != 0) if (error != 0)
return (error); return (error);
error = VOP_STAT(vp, sb, td->td_ucred, NOCRED); error = VOP_STAT(vp, sb, 0, td->td_ucred, NOCRED);
vput(vp); vput(vp);
return (error); return (error);
} }
/* /*
* Implement fstatfs() for (NFS) file handles. * Implement fstatfs() for (NFS) file handles.
*/ */
#ifndef _SYS_SYSPROTO_H_ #ifndef _SYS_SYSPROTO_H_
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