static inline int
suword_lwpid(void *addr, lwpid_t lwpid)
{
int error;
if (SV_CURPROC_FLAG(SV_LP64))
error = suword(addr, lwpid);
else
error = suword32(addr, lwpid);
return (error);
}
int
procfs_doprocfpregs(PFS_FILL_ARGS)
{
int error;
struct fpreg r;
struct thread *td2;
#ifdef COMPAT_FREEBSD32
struct fpreg32 r32;
int wrap32 = 0;
#endif
if (uio->uio_offset != 0)
return (0);
PROC_LOCK(p);
PROC_ASSERT_HELD(p);
if (p_candebug(td, p)) {
PROC_UNLOCK(p);
return (EPERM);
}
if (!P_SHOULDSTOP(p)) {
PROC_UNLOCK(p);
return (EBUSY);
}
td2 = FIRST_THREAD_IN_PROC(p);
#ifdef COMPAT_FREEBSD32
if (SV_CURPROC_FLAG(SV_ILP32)) {
if (SV_PROC_FLAG(td2->td_proc, SV_ILP32) == 0) {
PROC_UNLOCK(p);
return (EINVAL);
}
wrap32 = 1;
memset(&r32, 0, sizeof(r32));
} else
#endif
memset(&r, 0, sizeof(r));
error = PROC(read, fpregs, td2, &r);
if (error == 0) {
PROC_UNLOCK(p);
error = UIOMOVE_FROMBUF(r, uio);
PROC_LOCK(p);
}
if (error == 0 && uio->uio_rw == UIO_WRITE) {
if (!P_SHOULDSTOP(p))
error = EBUSY;
else
/* XXXKSE: */
error = PROC(write, fpregs, td2, &r);
}
PROC_UNLOCK(p);
return (error);
}
static int
mps_ioctl_devsw(struct dev_ioctl_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
u_long com = ap->a_cmd;
caddr_t arg = ap->a_data;
int flag = ap->a_fflag;
#ifdef COMPAT_FREEBSD32
if (SV_CURPROC_FLAG(SV_ILP32))
return (mps_ioctl32(dev, com, arg, flag, td));
#endif
return (mps_ioctl(dev, com, arg, flag));
}
int
procfs_doprocdbregs(PFS_FILL_ARGS)
{
int error;
struct dbreg r;
struct thread *td2;
#ifdef COMPAT_FREEBSD32
struct dbreg32 r32;
int wrap32 = 0;
#endif
if (uio->uio_offset != 0)
return (0);
PROC_LOCK(p);
KASSERT(p->p_lock > 0, ("proc not held"));
if (p_candebug(td, p) != 0) {
PROC_UNLOCK(p);
return (EPERM);
}
td2 = FIRST_THREAD_IN_PROC(p);
#ifdef COMPAT_FREEBSD32
if (SV_CURPROC_FLAG(SV_ILP32)) {
if (SV_PROC_FLAG(td2->td_proc, SV_ILP32) == 0) {
PROC_UNLOCK(p);
return (EINVAL);
}
wrap32 = 1;
}
#endif
error = PROC(read, dbregs, td2, &r);
if (error == 0) {
PROC_UNLOCK(p);
error = UIOMOVE_FROMBUF(r, uio);
PROC_LOCK(p);
}
if (error == 0 && uio->uio_rw == UIO_WRITE) {
if (!P_SHOULDSTOP(p)) /* XXXKSE should be P_TRACED? */
error = EBUSY;
else
/* XXXKSE: */
error = PROC(write, dbregs, td2, &r);
}
PROC_UNLOCK(p);
return (error);
}
/*
* The map entries can *almost* be read with programs like cat. However,
* large maps need special programs to read. It is not easy to implement
* a program that can sense the required size of the buffer, and then
* subsequently do a read with the appropriate size. This operation cannot
* be atomic. The best that we can do is to allow the program to do a read
* with an arbitrarily large buffer, and return as much as we can. We can
* return an error code if the buffer is too small (EFBIG), then the program
* can try a bigger buffer.
*/
int
procfs_doprocmap(PFS_FILL_ARGS)
{
struct vmspace *vm;
vm_map_t map;
vm_map_entry_t entry, tmp_entry;
struct vnode *vp;
char *fullpath, *freepath;
struct ucred *cred;
int error;
unsigned int last_timestamp;
#ifdef COMPAT_FREEBSD32
int wrap32 = 0;
#endif
PROC_LOCK(p);
error = p_candebug(td, p);
PROC_UNLOCK(p);
if (error)
return (error);
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
#ifdef COMPAT_FREEBSD32
if (SV_CURPROC_FLAG(SV_ILP32)) {
if (!(SV_PROC_FLAG(p, SV_ILP32)))
return (EOPNOTSUPP);
wrap32 = 1;
}
#endif
vm = vmspace_acquire_ref(p);
if (vm == NULL)
return (ESRCH);
map = &vm->vm_map;
vm_map_lock_read(map);
for (entry = map->header.next; entry != &map->header;
entry = entry->next) {
vm_object_t obj, tobj, lobj;
int ref_count, shadow_count, flags;
vm_offset_t e_start, e_end, addr;
int resident, privateresident;
char *type;
vm_eflags_t e_eflags;
vm_prot_t e_prot;
if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
continue;
e_eflags = entry->eflags;
e_prot = entry->protection;
e_start = entry->start;
e_end = entry->end;
privateresident = 0;
obj = entry->object.vm_object;
if (obj != NULL) {
VM_OBJECT_RLOCK(obj);
if (obj->shadow_count == 1)
privateresident = obj->resident_page_count;
}
cred = (entry->cred) ? entry->cred : (obj ? obj->cred : NULL);
resident = 0;
addr = entry->start;
while (addr < entry->end) {
if (pmap_extract(map->pmap, addr))
resident++;
addr += PAGE_SIZE;
}
for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
if (tobj != obj)
VM_OBJECT_RLOCK(tobj);
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);
lobj = tobj;
}
last_timestamp = map->timestamp;
vm_map_unlock_read(map);
freepath = NULL;
fullpath = "-";
if (lobj) {
vp = NULL;
switch (lobj->type) {
default:
case OBJT_DEFAULT:
type = "default";
break;
case OBJT_VNODE:
type = "vnode";
vp = lobj->handle;
vref(vp);
break;
case OBJT_SWAP:
if ((lobj->flags & OBJ_TMPFS_NODE) != 0) {
type = "vnode";
if ((lobj->flags & OBJ_TMPFS) != 0) {
vp = lobj->un_pager.swp.swp_tmpfs;
vref(vp);
}
} else {
type = "swap";
}
break;
case OBJT_SG:
case OBJT_DEVICE:
type = "device";
break;
}
if (lobj != obj)
VM_OBJECT_RUNLOCK(lobj);
flags = obj->flags;
ref_count = obj->ref_count;
shadow_count = obj->shadow_count;
VM_OBJECT_RUNLOCK(obj);
if (vp != NULL) {
vn_fullpath(td, vp, &fullpath, &freepath);
vrele(vp);
}
} else {
type = "none";
flags = 0;
ref_count = 0;
shadow_count = 0;
}
/*
* format:
* start, end, resident, private resident, cow, access, type,
* charged, charged uid.
*/
error = sbuf_printf(sb,
"0x%lx 0x%lx %d %d %p %s%s%s %d %d 0x%x %s %s %s %s %s %d\n",
(u_long)e_start, (u_long)e_end,
resident, privateresident,
#ifdef COMPAT_FREEBSD32
wrap32 ? NULL : obj, /* Hide 64 bit value */
#else
obj,
#endif
(e_prot & VM_PROT_READ)?"r":"-",
(e_prot & VM_PROT_WRITE)?"w":"-",
(e_prot & VM_PROT_EXECUTE)?"x":"-",
ref_count, shadow_count, flags,
(e_eflags & MAP_ENTRY_COW)?"COW":"NCOW",
(e_eflags & MAP_ENTRY_NEEDS_COPY)?"NC":"NNC",
type, fullpath,
cred ? "CH":"NCH", cred ? cred->cr_ruid : -1);
if (freepath != NULL)
free(freepath, M_TEMP);
vm_map_lock_read(map);
if (error == -1) {
error = 0;
break;
}
if (last_timestamp != map->timestamp) {
/*
* Look again for the entry because the map was
* modified while it was unlocked. Specifically,
* the entry may have been clipped, merged, or deleted.
*/
vm_map_lookup_entry(map, e_end - 1, &tmp_entry);
entry = tmp_entry;
}
}
vm_map_unlock_read(map);
vmspace_free(vm);
return (error);
}
