Duplicate another few hundred lines of code in order to be compatible

with unreleased binaries.

4 files changed, 211 insertions, 4 deletions

diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c
index 11fa1c2..faac641 100644
--- a/sys/kern/kern_descrip.c
+++ b/sys/kern/kern_descrip.c
@@ -2806,6 +2806,7 @@ export_vnode_for_sysctl(struct vnode *vp, int type,
 	strlcpy(kif->kf_path, fullpath, sizeof(kif->kf_path));
 	if (freepath != NULL)
 		free(freepath, M_TEMP);
+	/* Pack record size down */
 	kif->kf_structsize = offsetof(struct kinfo_file, kf_path) +
 	    strlen(kif->kf_path) + 1;
 	kif->kf_structsize = roundup(kif->kf_structsize, sizeof(uint64_t));
@@ -3003,6 +3004,7 @@ sysctl_kern_proc_filedesc(SYSCTL_HANDLER_ARGS)
 			strlcpy(kif->kf_path, tty_devname(tp),
 			    sizeof(kif->kf_path));
 		}
+		/* Pack record size down */
 		kif->kf_structsize = offsetof(struct kinfo_file, kf_path) +
 		    strlen(kif->kf_path) + 1;
 		kif->kf_structsize = roundup(kif->kf_structsize,
diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c
index e8e6e00..bb66f04 100644
--- a/sys/kern/kern_proc.c
+++ b/sys/kern/kern_proc.c
@@ -32,6 +32,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include "opt_compat.h"
 #include "opt_ddb.h"
 #include "opt_kdtrace.h"
 #include "opt_ktrace.h"
@@ -1337,6 +1338,173 @@ sysctl_kern_proc_sv_name(SYSCTL_HANDLER_ARGS)
 	return (sysctl_handle_string(oidp, sv_name, 0, req));
 }
 
+#ifdef KINFO_OVMENTRY_SIZE
+CTASSERT(sizeof(struct kinfo_ovmentry) == KINFO_OVMENTRY_SIZE);
+#endif
+
+#ifdef COMPAT_FREEBSD7
+static int
+sysctl_kern_proc_ovmmap(SYSCTL_HANDLER_ARGS)
+{
+	vm_map_entry_t entry, tmp_entry;
+	unsigned int last_timestamp;
+	char *fullpath, *freepath;
+	struct kinfo_ovmentry *kve;
+	struct vattr va;
+	struct ucred *cred;
+	int error, *name;
+	struct vnode *vp;
+	struct proc *p;
+	vm_map_t map;
+
+	name = (int *)arg1;
+	if ((p = pfind((pid_t)name[0])) == NULL)
+		return (ESRCH);
+	if (p->p_flag & P_WEXIT) {
+		PROC_UNLOCK(p);
+		return (ESRCH);
+	}
+	if ((error = p_candebug(curthread, p))) {
+		PROC_UNLOCK(p);
+		return (error);
+	}
+	_PHOLD(p);
+	PROC_UNLOCK(p);
+
+	kve = malloc(sizeof(*kve), M_TEMP, M_WAITOK);
+
+	map = &p->p_vmspace->vm_map;	/* XXXRW: More locking required? */
+	vm_map_lock_read(map);
+	for (entry = map->header.next; entry != &map->header;
+	    entry = entry->next) {
+		vm_object_t obj, tobj, lobj;
+		vm_offset_t addr;
+		int vfslocked;
+
+		if (entry->eflags & MAP_ENTRY_IS_SUB_MAP)
+			continue;
+
+		bzero(kve, sizeof(*kve));
+		kve->kve_structsize = sizeof(*kve);
+
+		kve->kve_private_resident = 0;
+		obj = entry->object.vm_object;
+		if (obj != NULL) {
+			VM_OBJECT_LOCK(obj);
+			if (obj->shadow_count == 1)
+				kve->kve_private_resident =
+				    obj->resident_page_count;
+		}
+		kve->kve_resident = 0;
+		addr = entry->start;
+		while (addr < entry->end) {
+			if (pmap_extract(map->pmap, addr))
+				kve->kve_resident++;
+			addr += PAGE_SIZE;
+		}
+
+		for (lobj = tobj = obj; tobj; tobj = tobj->backing_object) {
+			if (tobj != obj)
+				VM_OBJECT_LOCK(tobj);
+			if (lobj != obj)
+				VM_OBJECT_UNLOCK(lobj);
+			lobj = tobj;
+		}
+
+		kve->kve_fileid = 0;
+		kve->kve_fsid = 0;
+		freepath = NULL;
+		fullpath = "";
+		if (lobj) {
+			vp = NULL;
+			switch(lobj->type) {
+			case OBJT_DEFAULT:
+				kve->kve_type = KVME_TYPE_DEFAULT;
+				break;
+			case OBJT_VNODE:
+				kve->kve_type = KVME_TYPE_VNODE;
+				vp = lobj->handle;
+				vref(vp);
+				break;
+			case OBJT_SWAP:
+				kve->kve_type = KVME_TYPE_SWAP;
+				break;
+			case OBJT_DEVICE:
+				kve->kve_type = KVME_TYPE_DEVICE;
+				break;
+			case OBJT_PHYS:
+				kve->kve_type = KVME_TYPE_PHYS;
+				break;
+			case OBJT_DEAD:
+				kve->kve_type = KVME_TYPE_DEAD;
+				break;
+			default:
+				kve->kve_type = KVME_TYPE_UNKNOWN;
+				break;
+			}
+			if (lobj != obj)
+				VM_OBJECT_UNLOCK(lobj);
+
+			kve->kve_ref_count = obj->ref_count;
+			kve->kve_shadow_count = obj->shadow_count;
+			VM_OBJECT_UNLOCK(obj);
+			if (vp != NULL) {
+				vn_fullpath(curthread, vp, &fullpath,
+				    &freepath);
+				cred = curthread->td_ucred;
+				vfslocked = VFS_LOCK_GIANT(vp->v_mount);
+				vn_lock(vp, LK_SHARED | LK_RETRY);
+				if (VOP_GETATTR(vp, &va, cred) == 0) {
+					kve->kve_fileid = va.va_fileid;
+					kve->kve_fsid = va.va_fsid;
+				}
+				vput(vp);
+				VFS_UNLOCK_GIANT(vfslocked);
+			}
+		} else {
+			kve->kve_type = KVME_TYPE_NONE;
+			kve->kve_ref_count = 0;
+			kve->kve_shadow_count = 0;
+		}
+
+		kve->kve_start = (void *)entry->start;
+		kve->kve_end = (void *)entry->end;
+		kve->kve_offset = entry->offset;
+
+		if (entry->protection & VM_PROT_READ)
+			kve->kve_protection |= KVME_PROT_READ;
+		if (entry->protection & VM_PROT_WRITE)
+			kve->kve_protection |= KVME_PROT_WRITE;
+		if (entry->protection & VM_PROT_EXECUTE)
+			kve->kve_protection |= KVME_PROT_EXEC;
+
+		if (entry->eflags & MAP_ENTRY_COW)
+			kve->kve_flags |= KVME_FLAG_COW;
+		if (entry->eflags & MAP_ENTRY_NEEDS_COPY)
+			kve->kve_flags |= KVME_FLAG_NEEDS_COPY;
+
+		strlcpy(kve->kve_path, fullpath, sizeof(kve->kve_path));
+		if (freepath != NULL)
+			free(freepath, M_TEMP);
+
+		last_timestamp = map->timestamp;
+		vm_map_unlock_read(map);
+		error = SYSCTL_OUT(req, kve, sizeof(*kve));
+		vm_map_lock_read(map);
+		if (error)
+			break;
+		if (last_timestamp + 1 != map->timestamp) {
+			vm_map_lookup_entry(map, addr - 1, &tmp_entry);
+			entry = tmp_entry;
+		}
+	}
+	vm_map_unlock_read(map);
+	PRELE(p);
+	free(kve, M_TEMP);
+	return (error);
+}
+#endif	/* COMPAT_FREEBSD7 */
+
 #ifdef KINFO_VMENTRY_SIZE
 CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);
 #endif
@@ -1383,7 +1551,6 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
 			continue;
 
 		bzero(kve, sizeof(*kve));
-		kve->kve_structsize = sizeof(*kve);
 
 		kve->kve_private_resident = 0;
 		obj = entry->object.vm_object;
@@ -1487,7 +1654,12 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS)
 
 		last_timestamp = map->timestamp;
 		vm_map_unlock_read(map);
-		error = SYSCTL_OUT(req, kve, sizeof(*kve));
+		/* Pack record size down */
+		kve->kve_structsize = offsetof(struct kinfo_vmentry, kve_path) +
+		    strlen(kve->kve_path) + 1;
+		kve->kve_structsize = roundup(kve->kve_structsize,
+		    sizeof(uint64_t));
+		error = SYSCTL_OUT(req, kve, kve->kve_structsize);
 		vm_map_lock_read(map);
 		if (error)
 			break;
@@ -1673,6 +1845,11 @@ static SYSCTL_NODE(_kern_proc, (KERN_PROC_PID | KERN_PROC_INC_THREAD), pid_td,
 static SYSCTL_NODE(_kern_proc, (KERN_PROC_PROC | KERN_PROC_INC_THREAD), proc_td,
 	CTLFLAG_RD, sysctl_kern_proc, "Return process table, no threads");
 
+#ifdef COMPAT_FREEBSD7
+static SYSCTL_NODE(_kern_proc, KERN_PROC_OVMMAP, ovmmap, CTLFLAG_RD,
+	sysctl_kern_proc_ovmmap, "Old Process vm map entries");
+#endif
+
 static SYSCTL_NODE(_kern_proc, KERN_PROC_VMMAP, vmmap, CTLFLAG_RD,
 	sysctl_kern_proc_vmmap, "Process vm map entries");
 
diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index e4e3040..f1cb04a 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -540,14 +540,16 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
 #define	KERN_PROC_RGID		10	/* by real group id */
 #define	KERN_PROC_GID		11	/* by effective group id */
 #define	KERN_PROC_PATHNAME	12	/* path to executable */
-#define	KERN_PROC_VMMAP		13	/* VM map entries for process */
+#define	KERN_PROC_OVMMAP	13	/* Old VM map entries for process */
 #define	KERN_PROC_OFILEDESC	14	/* Old file descriptors for process */
 #define	KERN_PROC_KSTACK	15	/* Kernel stacks for process */
 #define	KERN_PROC_INC_THREAD	0x10	/*
 					 * modifier for pid, pgrp, tty,
 					 * uid, ruid, gid, rgid and proc
+					 * This effectively uses 16-31
 					 */
-#define	KERN_PROC_FILEDESC	32	/* File descriptors for process */
+#define	KERN_PROC_VMMAP		32	/* VM map entries for process */
+#define	KERN_PROC_FILEDESC	33	/* File descriptors for process */
 
 /*
  * KERN_IPC identifiers
diff --git a/sys/sys/user.h b/sys/sys/user.h
index 4f11765..73f7d76 100644
--- a/sys/sys/user.h
+++ b/sys/sys/user.h
@@ -348,6 +348,32 @@ struct kinfo_file {
 #define	KVME_FLAG_COW		0x00000001
 #define	KVME_FLAG_NEEDS_COPY	0x00000002
 
+#if defined(__amd64__)
+#define	KINFO_OVMENTRY_SIZE	1168
+#endif
+#if defined(__i386__)
+#define	KINFO_OVMENTRY_SIZE	1128
+#endif
+
+struct kinfo_ovmentry {
+	int	 kve_structsize;		/* Size of kinfo_vmmapentry. */
+	int	 kve_type;			/* Type of map entry. */
+	void	*kve_start;			/* Starting address. */
+	void	*kve_end;			/* Finishing address. */
+	int	 kve_flags;			/* Flags on map entry. */
+	int	 kve_resident;			/* Number of resident pages. */
+	int	 kve_private_resident;		/* Number of private pages. */
+	int	 kve_protection;		/* Protection bitmask. */
+	int	 kve_ref_count;			/* VM obj ref count. */
+	int	 kve_shadow_count;		/* VM obj shadow count. */
+	char	 kve_path[PATH_MAX];		/* Path to VM obj, if any. */
+	void	*_kve_pspare[8];		/* Space for more stuff. */
+	off_t	 kve_offset;			/* Mapping offset in object */
+	uint64_t kve_fileid;			/* inode number if vnode */
+	dev_t	 kve_fsid;			/* dev_t of vnode location */
+	int	 _kve_ispare[3];		/* Space for more stuff. */
+};
+
 #if defined(__amd64__) || defined(__i386__)
 #define	KINFO_VMENTRY_SIZE	1160
 #endif