size_t
dump_vm_map_entry(kvm_t *kd, struct kbit *vmspace,
struct vm_map_entry *vme, struct sum *sum)
{
struct kbit kbit[4], *uvm_obj, *vp, *vfs, *amap;
ino_t inode = 0;
dev_t dev = 0;
size_t sz = 0;
char *name;
uvm_obj = &kbit[0];
vp = &kbit[1];
vfs = &kbit[2];
amap = &kbit[3];
A(uvm_obj) = 0;
A(vp) = 0;
A(vfs) = 0;
if (debug & PRINT_VM_MAP_ENTRY) {
printf("%s = {", "vm_map_entry");
printf(" start = %lx,", vme->start);
printf(" end = %lx,", vme->end);
printf(" object.uvm_obj/sub_map = %p,\n", vme->object.uvm_obj);
printf(" offset = %lx,", (unsigned long)vme->offset);
printf(" etype = %x <%s%s%s%s%s >,", vme->etype,
vme->etype & UVM_ET_OBJ ? " OBJ" : "",
vme->etype & UVM_ET_SUBMAP ? " SUBMAP" : "",
vme->etype & UVM_ET_COPYONWRITE ? " COW" : "",
vme->etype & UVM_ET_NEEDSCOPY ? " NEEDSCOPY" : "",
vme->etype & UVM_ET_HOLE ? " HOLE" : "");
printf(" protection = %x,\n", vme->protection);
printf(" max_protection = %x,", vme->max_protection);
printf(" inheritance = %d,", vme->inheritance);
printf(" wired_count = %d,\n", vme->wired_count);
printf(" aref = <struct vm_aref>,");
printf(" advice = %d,", vme->advice);
printf(" flags = %x <%s%s > }\n", vme->flags,
vme->flags & UVM_MAP_STATIC ? " STATIC" : "",
vme->flags & UVM_MAP_KMEM ? " KMEM" : "");
}
A(vp) = 0;
A(uvm_obj) = 0;
if (vme->object.uvm_obj != NULL) {
P(uvm_obj) = vme->object.uvm_obj;
S(uvm_obj) = sizeof(struct uvm_object);
KDEREF(kd, uvm_obj);
if (UVM_ET_ISOBJ(vme) &&
UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) {
P(vp) = P(uvm_obj);
S(vp) = sizeof(struct vnode);
KDEREF(kd, vp);
}
}
if (vme->aref.ar_amap != NULL) {
P(amap) = vme->aref.ar_amap;
S(amap) = sizeof(struct vm_amap);
KDEREF(kd, amap);
}
A(vfs) = 0;
if (P(vp) != NULL && D(vp, vnode)->v_mount != NULL) {
P(vfs) = D(vp, vnode)->v_mount;
S(vfs) = sizeof(struct mount);
KDEREF(kd, vfs);
D(vp, vnode)->v_mount = D(vfs, mount);
}
/*
* dig out the device number and inode number from certain
* file system types.
*/
#define V_DATA_IS(vp, type, d, i) do { \
struct kbit data; \
P(&data) = D(vp, vnode)->v_data; \
S(&data) = sizeof(*D(&data, type)); \
KDEREF(kd, &data); \
dev = D(&data, type)->d; \
inode = D(&data, type)->i; \
} while (0/*CONSTCOND*/)
if (A(vp) &&
D(vp, vnode)->v_type == VREG &&
D(vp, vnode)->v_data != NULL) {
switch (D(vp, vnode)->v_tag) {
case VT_UFS:
case VT_EXT2FS:
V_DATA_IS(vp, inode, i_dev, i_number);
break;
case VT_ISOFS:
V_DATA_IS(vp, iso_node, i_dev, i_number);
break;
case VT_NON:
case VT_NFS:
case VT_MFS:
case VT_MSDOSFS:
case VT_PROCFS:
default:
break;
}
}
name = findname(kd, vmspace, vme, vp, vfs, uvm_obj);
if (print_map) {
printf("0x%lx 0x%lx %c%c%c %c%c%c %s %s %d %d %d",
vme->start, vme->end,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(vme->max_protection & VM_PROT_READ) ? 'r' : '-',
(vme->max_protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-',
(vme->etype & UVM_ET_COPYONWRITE) ? "COW" : "NCOW",
(vme->etype & UVM_ET_NEEDSCOPY) ? "NC" : "NNC",
vme->inheritance, vme->wired_count,
vme->advice);
if (verbose) {
if (inode)
printf(" %d,%d %llu",
major(dev), minor(dev),
(unsigned long long)inode);
if (name[0])
printf(" %s", name);
}
printf("\n");
}
if (print_maps)
printf("%0*lx-%0*lx %c%c%c%c %0*lx %02x:%02x %llu %s\n",
(int)sizeof(void *) * 2, vme->start,
(int)sizeof(void *) * 2, vme->end,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's',
(int)sizeof(void *) * 2,
(unsigned long)vme->offset,
major(dev), minor(dev), (unsigned long long)inode,
inode ? name : "");
if (print_ddb) {
printf(" - <lost address>: 0x%lx->0x%lx: "
"obj=%p/0x%lx, amap=%p/%d\n",
vme->start, vme->end,
vme->object.uvm_obj, (unsigned long)vme->offset,
vme->aref.ar_amap, vme->aref.ar_pageoff);
printf("\tsubmap=%c, cow=%c, nc=%c, prot(max)=%d/%d, inh=%d, "
"wc=%d, adv=%d\n",
(vme->etype & UVM_ET_SUBMAP) ? 'T' : 'F',
(vme->etype & UVM_ET_COPYONWRITE) ? 'T' : 'F',
(vme->etype & UVM_ET_NEEDSCOPY) ? 'T' : 'F',
vme->protection, vme->max_protection,
vme->inheritance, vme->wired_count, vme->advice);
if (inode && verbose)
printf("\t(dev=%d,%d ino=%llu [%s] [%p])\n",
major(dev), minor(dev), (unsigned long long)inode,
inode ? name : "", P(vp));
else if (name[0] == ' ' && verbose)
printf("\t(%s)\n", &name[2]);
}
if (print_solaris) {
char prot[30];
prot[0] = '\0';
prot[1] = '\0';
if (vme->protection & VM_PROT_READ)
strlcat(prot, "/read", sizeof(prot));
if (vme->protection & VM_PROT_WRITE)
strlcat(prot, "/write", sizeof(prot));
if (vme->protection & VM_PROT_EXECUTE)
strlcat(prot, "/exec", sizeof(prot));
sz = (size_t)((vme->end - vme->start) / 1024);
printf("%0*lX %6luK %-15s %s\n",
(int)sizeof(void *) * 2, (unsigned long)vme->start,
(unsigned long)sz, &prot[1], name);
}
if (print_all) {
sz = (size_t)((vme->end - vme->start) / 1024);
printf("%0*lx-%0*lx %7luk %0*lx %c%c%c%c%c (%c%c%c) %d/%d/%d %02d:%02d %7llu - %s",
(int)sizeof(void *) * 2, vme->start, (int)sizeof(void *) * 2,
vme->end - (vme->start != vme->end ? 1 : 0), (unsigned long)sz,
(int)sizeof(void *) * 2, (unsigned long)vme->offset,
(vme->protection & VM_PROT_READ) ? 'r' : '-',
(vme->protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's',
(vme->etype & UVM_ET_NEEDSCOPY) ? '+' : '-',
(vme->max_protection & VM_PROT_READ) ? 'r' : '-',
(vme->max_protection & VM_PROT_WRITE) ? 'w' : '-',
(vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-',
vme->inheritance, vme->wired_count, vme->advice,
major(dev), minor(dev), (unsigned long long)inode, name);
if (A(vp))
printf(" [%p]", P(vp));
printf("\n");
}
if (print_amap && vme->aref.ar_amap) {
printf(" amap - ref: %d fl: 0x%x maxsl: %d nsl: %d nuse: %d\n",
D(amap, vm_amap)->am_ref,
D(amap, vm_amap)->am_flags,
D(amap, vm_amap)->am_maxslot,
D(amap, vm_amap)->am_nslot,
D(amap, vm_amap)->am_nused);
if (sum) {
sum->s_am_nslots += D(amap, vm_amap)->am_nslot;
sum->s_am_maxslots += D(amap, vm_amap)->am_maxslot;
sum->s_am_nusedslots += D(amap, vm_amap)->am_nused;
}
}
/* no access allowed, don't count space */
if ((vme->protection & rwx) == 0)
sz = 0;
return (sz);
}
char *
findname(kvm_t *kd, struct kbit *vmspace,
struct vm_map_entry *vme, struct kbit *vp,
struct kbit *vfs, struct kbit *uvm_obj)
{
static char buf[1024], *name;
size_t l;
if (UVM_ET_ISOBJ(vme)) {
if (A(vfs)) {
l = strlen(D(vfs, mount)->mnt_stat.f_mntonname);
switch (search_cache(kd, vp, &name, buf, sizeof(buf))) {
case 0: /* found something */
if (name - (1 + 11 + l) < buf)
break;
name--;
*name = '/';
/*FALLTHROUGH*/
case 2: /* found nothing */
name -= 11;
memcpy(name, " -unknown- ", (size_t)11);
name -= l;
memcpy(name,
D(vfs, mount)->mnt_stat.f_mntonname, l);
break;
case 1: /* all is well */
if (name - (1 + l) < buf)
break;
name--;
*name = '/';
if (l != 1) {
name -= l;
memcpy(name,
D(vfs, mount)->mnt_stat.f_mntonname, l);
}
break;
}
} else if (UVM_OBJ_IS_DEVICE(D(uvm_obj, uvm_object))) {
struct kbit kdev;
dev_t dev;
P(&kdev) = P(uvm_obj);
S(&kdev) = sizeof(struct uvm_device);
KDEREF(kd, &kdev);
dev = D(&kdev, uvm_device)->u_device;
name = devname(dev, S_IFCHR);
if (name != NULL)
snprintf(buf, sizeof(buf), "/dev/%s", name);
else
snprintf(buf, sizeof(buf), " [ device %d,%d ]",
major(dev), minor(dev));
name = buf;
} else if (UVM_OBJ_IS_AOBJ(D(uvm_obj, uvm_object)))
name = " [ uvm_aobj ]";
else if (UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object)))
name = " [ ?VNODE? ]";
else {
snprintf(buf, sizeof(buf), " [ unknown (%p) ]",
D(uvm_obj, uvm_object)->pgops);
name = buf;
}
} else if (D(vmspace, vmspace)->vm_maxsaddr <= (caddr_t)vme->start &&
(D(vmspace, vmspace)->vm_maxsaddr + (size_t)maxssiz) >=
(caddr_t)vme->end) {
name = " [ stack ]";
} else if (D(vmspace, vmspace)->vm_daddr <= (caddr_t)vme->start &&
D(vmspace, vmspace)->vm_daddr + BRKSIZ >= (caddr_t)vme->end) {
name = " [ heap ]";
} else if (UVM_ET_ISHOLE(vme))
name = " [ hole ]";
else
name = " [ anon ]";
return (name);
}
/*
* 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_domap(struct lwp *curl, struct proc *p, struct pfsnode *pfs,
struct uio *uio, int linuxmode)
{
int error;
struct vmspace *vm;
struct vm_map *map;
struct vm_map_entry *entry;
char *buffer = NULL;
size_t bufsize = BUFFERSIZE;
char *path;
struct vnode *vp;
struct vattr va;
dev_t dev;
long fileid;
size_t pos;
int width = (int)((curl->l_proc->p_flag & PK_32) ? sizeof(int32_t) :
sizeof(void *)) * 2;
if (uio->uio_rw != UIO_READ)
return EOPNOTSUPP;
if (uio->uio_offset != 0) {
/*
* we return 0 here, so that the second read returns EOF
* we don't support reading from an offset because the
* map could have changed between the two reads.
*/
return 0;
}
error = 0;
if (linuxmode != 0)
path = malloc(MAXPATHLEN * 4, M_TEMP, M_WAITOK);
else
path = NULL;
if ((error = proc_vmspace_getref(p, &vm)) != 0)
goto out;
map = &vm->vm_map;
vm_map_lock_read(map);
again:
buffer = malloc(bufsize, M_TEMP, M_WAITOK);
pos = 0;
for (entry = map->header.next; entry != &map->header;
entry = entry->next) {
if (UVM_ET_ISSUBMAP(entry))
continue;
if (linuxmode != 0) {
*path = 0;
dev = (dev_t)0;
fileid = 0;
if (UVM_ET_ISOBJ(entry) &&
UVM_OBJ_IS_VNODE(entry->object.uvm_obj)) {
vp = (struct vnode *)entry->object.uvm_obj;
vn_lock(vp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(vp, &va, curl->l_cred);
VOP_UNLOCK(vp);
if (error == 0 && vp != pfs->pfs_vnode) {
fileid = va.va_fileid;
dev = va.va_fsid;
error = vnode_to_path(path,
MAXPATHLEN * 4, vp, curl, p);
}
}
pos += snprintf(buffer + pos, bufsize - pos,
"%.*"PRIxVADDR"-%.*"PRIxVADDR" %c%c%c%c "
"%.*lx %.2llx:%.2llx %-8ld %25.s %s\n",
width, entry->start,
width, entry->end,
(entry->protection & VM_PROT_READ) ? 'r' : '-',
(entry->protection & VM_PROT_WRITE) ? 'w' : '-',
(entry->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(entry->etype & UVM_ET_COPYONWRITE) ? 'p' : 's',
width, (unsigned long)entry->offset,
(unsigned long long)major(dev),
(unsigned long long)minor(dev), fileid, "", path);
} else {
pos += snprintf(buffer + pos, bufsize - pos,
"%#"PRIxVADDR" %#"PRIxVADDR" "
"%c%c%c %c%c%c %s %s %d %d %d\n",
entry->start, entry->end,
(entry->protection & VM_PROT_READ) ? 'r' : '-',
(entry->protection & VM_PROT_WRITE) ? 'w' : '-',
(entry->protection & VM_PROT_EXECUTE) ? 'x' : '-',
(entry->max_protection & VM_PROT_READ) ? 'r' : '-',
(entry->max_protection & VM_PROT_WRITE) ? 'w' : '-',
(entry->max_protection & VM_PROT_EXECUTE) ?
'x' : '-',
(entry->etype & UVM_ET_COPYONWRITE) ?
"COW" : "NCOW",
(entry->etype & UVM_ET_NEEDSCOPY) ? "NC" : "NNC",
entry->inheritance, entry->wired_count,
entry->advice);
}
if (pos >= bufsize) {
bufsize <<= 1;
if (bufsize > MAXBUFFERSIZE) {
error = ENOMEM;
vm_map_unlock_read(map);
uvmspace_free(vm);
goto out;
}
free(buffer, M_TEMP);
goto again;
}
}
vm_map_unlock_read(map);
uvmspace_free(vm);
error = uiomove(buffer, pos, uio);
out:
if (path != NULL)
free(path, M_TEMP);
if (buffer != NULL)
free(buffer, M_TEMP);
return error;
}
