diff --git a/acinclude.m4 b/acinclude.m4
index 11abeb8491..8334d084bd 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -759,6 +759,11 @@ case $AFS_SYSNAME in
     *_obsd46)   AFS_PARAM_COMMON=param.obsd46.h  ;;
     *_obsd47)   AFS_PARAM_COMMON=param.obsd47.h  ;;
     *_obsd48)   AFS_PARAM_COMMON=param.obsd48.h  ;;
+    *_obsd49)   AFS_PARAM_COMMON=param.obsd49.h  ;;
+    *_obsd50)   AFS_PARAM_COMMON=param.obsd50.h  ;;
+    *_obsd51)   AFS_PARAM_COMMON=param.obsd51.h  ;;
+    *_obsd52)   AFS_PARAM_COMMON=param.obsd52.h  ;;
+    *_obsd53)   AFS_PARAM_COMMON=param.obsd53.h  ;;
     *_linux22)  AFS_PARAM_COMMON=param.linux22.h ;;
     *_linux24)  AFS_PARAM_COMMON=param.linux24.h ;;
     *_linux26)  AFS_PARAM_COMMON=param.linux26.h ;;
diff --git a/src/config/afs_sysnames.h b/src/config/afs_sysnames.h
index 1768ed2de7..060795b680 100644
--- a/src/config/afs_sysnames.h
+++ b/src/config/afs_sysnames.h
@@ -276,6 +276,11 @@
 #define SYS_NAME_ID_i386_obsd46         2615
 #define SYS_NAME_ID_i386_obsd47         2616
 #define SYS_NAME_ID_i386_obsd48         2617
+#define SYS_NAME_ID_i386_obsd49         2618
+#define SYS_NAME_ID_i386_obsd50         2619
+#define SYS_NAME_ID_i386_obsd51         2620
+#define SYS_NAME_ID_i386_obsd52         2621
+#define SYS_NAME_ID_i386_obsd53         2622
 
 #define SYS_NAME_ID_amd64_linux2        2700
 #define SYS_NAME_ID_amd64_linux22       2701
@@ -336,6 +341,11 @@
 #define SYS_NAME_ID_amd64_obsd46        4015
 #define SYS_NAME_ID_amd64_obsd47        4016
 #define SYS_NAME_ID_amd64_obsd48        4017
+#define SYS_NAME_ID_amd64_obsd49        4018
+#define SYS_NAME_ID_amd64_obsd50        4019
+#define SYS_NAME_ID_amd64_obsd51        4020
+#define SYS_NAME_ID_amd64_obsd52        4021
+#define SYS_NAME_ID_amd64_obsd53        4022
 
 /*
  * Placeholder to keep system-wide standard flags since this file is included by all
diff --git a/src/config/param.amd64_obsd49.h b/src/config/param.amd64_obsd49.h
new file mode 100644
index 0000000000..1760f5c1d3
--- /dev/null
+++ b/src/config/param.amd64_obsd49.h
@@ -0,0 +1,19 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_AMD64_PARAM_H
+#define	AFS_AMD64_PARAM_H
+
+#define SYS_NAME		"amd64_obsd49"
+#define SYS_NAME_ID		SYS_NAME_ID_amd64_obsd49
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFS_64BITPOINTER_ENV    1
+#define AFS_64BITUSERPOINTER_ENV	1
+#define AFSLITTLE_ENDIAN	1
+
+#endif /* AFS_AMD64_PARAM_H */
diff --git a/src/config/param.amd64_obsd50.h b/src/config/param.amd64_obsd50.h
new file mode 100644
index 0000000000..ab6b74bd78
--- /dev/null
+++ b/src/config/param.amd64_obsd50.h
@@ -0,0 +1,19 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_AMD64_PARAM_H
+#define	AFS_AMD64_PARAM_H
+
+#define SYS_NAME		"amd64_obsd50"
+#define SYS_NAME_ID		SYS_NAME_ID_amd64_obsd50
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFS_64BITPOINTER_ENV    1
+#define AFS_64BITUSERPOINTER_ENV	1
+#define AFSLITTLE_ENDIAN	1
+
+#endif /* AFS_AMD64_PARAM_H */
diff --git a/src/config/param.amd64_obsd51.h b/src/config/param.amd64_obsd51.h
new file mode 100644
index 0000000000..4e03954fba
--- /dev/null
+++ b/src/config/param.amd64_obsd51.h
@@ -0,0 +1,19 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_AMD64_PARAM_H
+#define	AFS_AMD64_PARAM_H
+
+#define SYS_NAME		"amd64_obsd51"
+#define SYS_NAME_ID		SYS_NAME_ID_amd64_obsd51
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFS_64BITPOINTER_ENV    1
+#define AFS_64BITUSERPOINTER_ENV	1
+#define AFSLITTLE_ENDIAN	1
+
+#endif /* AFS_AMD64_PARAM_H */
diff --git a/src/config/param.amd64_obsd52.h b/src/config/param.amd64_obsd52.h
new file mode 100644
index 0000000000..868f49b81e
--- /dev/null
+++ b/src/config/param.amd64_obsd52.h
@@ -0,0 +1,19 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_AMD64_PARAM_H
+#define	AFS_AMD64_PARAM_H
+
+#define SYS_NAME		"amd64_obsd52"
+#define SYS_NAME_ID		SYS_NAME_ID_amd64_obsd52
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFS_64BITPOINTER_ENV    1
+#define AFS_64BITUSERPOINTER_ENV	1
+#define AFSLITTLE_ENDIAN	1
+
+#endif /* AFS_AMD64_PARAM_H */
diff --git a/src/config/param.amd64_obsd53.h b/src/config/param.amd64_obsd53.h
new file mode 100644
index 0000000000..42da77edfa
--- /dev/null
+++ b/src/config/param.amd64_obsd53.h
@@ -0,0 +1,19 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_AMD64_PARAM_H
+#define	AFS_AMD64_PARAM_H
+
+#define SYS_NAME		"amd64_obsd53"
+#define SYS_NAME_ID		SYS_NAME_ID_amd64_obsd53
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFS_64BITPOINTER_ENV    1
+#define AFS_64BITUSERPOINTER_ENV	1
+#define AFSLITTLE_ENDIAN	1
+
+#endif /* AFS_AMD64_PARAM_H */
diff --git a/src/config/param.i386_obsd49.h b/src/config/param.i386_obsd49.h
new file mode 100644
index 0000000000..fd0203ccc2
--- /dev/null
+++ b/src/config/param.i386_obsd49.h
@@ -0,0 +1,25 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_I386_PARAM_H
+#define	AFS_I386_PARAM_H
+
+#define SYS_NAME		"i386_obsd49"
+#define SYS_NAME_ID		SYS_NAME_ID_i386_obsd49
+
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFSLITTLE_ENDIAN	1
+
+#ifdef _KERNEL
+void bcopy(const void *, void *, size_t);
+
+static inline void *memmove(void *dst, const void *src, size_t len) {
+    bcopy(src, dst, len);
+    return(dst);
+}
+#endif
+
+#endif /* AFS_I386_PARAM_H */
diff --git a/src/config/param.i386_obsd50.h b/src/config/param.i386_obsd50.h
new file mode 100644
index 0000000000..0dffd46de0
--- /dev/null
+++ b/src/config/param.i386_obsd50.h
@@ -0,0 +1,25 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_I386_PARAM_H
+#define	AFS_I386_PARAM_H
+
+#define SYS_NAME		"i386_obsd50"
+#define SYS_NAME_ID		SYS_NAME_ID_i386_obsd50
+
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFSLITTLE_ENDIAN	1
+
+#ifdef _KERNEL
+void bcopy(const void *, void *, size_t);
+
+static inline void *memmove(void *dst, const void *src, size_t len) {
+    bcopy(src, dst, len);
+    return(dst);
+}
+#endif
+
+#endif /* AFS_I386_PARAM_H */
diff --git a/src/config/param.i386_obsd51.h b/src/config/param.i386_obsd51.h
new file mode 100644
index 0000000000..621108ad40
--- /dev/null
+++ b/src/config/param.i386_obsd51.h
@@ -0,0 +1,25 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_I386_PARAM_H
+#define	AFS_I386_PARAM_H
+
+#define SYS_NAME		"i386_obsd51"
+#define SYS_NAME_ID		SYS_NAME_ID_i386_obsd51
+
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFSLITTLE_ENDIAN	1
+
+#ifdef _KERNEL
+void bcopy(const void *, void *, size_t);
+
+static inline void *memmove(void *dst, const void *src, size_t len) {
+    bcopy(src, dst, len);
+    return(dst);
+}
+#endif
+
+#endif /* AFS_I386_PARAM_H */
diff --git a/src/config/param.i386_obsd52.h b/src/config/param.i386_obsd52.h
new file mode 100644
index 0000000000..04365461a6
--- /dev/null
+++ b/src/config/param.i386_obsd52.h
@@ -0,0 +1,25 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_I386_PARAM_H
+#define	AFS_I386_PARAM_H
+
+#define SYS_NAME		"i386_obsd52"
+#define SYS_NAME_ID		SYS_NAME_ID_i386_obsd52
+
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFSLITTLE_ENDIAN	1
+
+#ifdef _KERNEL
+void bcopy(const void *, void *, size_t);
+
+static inline void *memmove(void *dst, const void *src, size_t len) {
+    bcopy(src, dst, len);
+    return(dst);
+}
+#endif
+
+#endif /* AFS_I386_PARAM_H */
diff --git a/src/config/param.i386_obsd53.h b/src/config/param.i386_obsd53.h
new file mode 100644
index 0000000000..354be472a1
--- /dev/null
+++ b/src/config/param.i386_obsd53.h
@@ -0,0 +1,25 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_I386_PARAM_H
+#define	AFS_I386_PARAM_H
+
+#define SYS_NAME		"i386_obsd53"
+#define SYS_NAME_ID		SYS_NAME_ID_i386_obsd53
+
+#define AFS_X86_XBSD_ENV	1
+#define AFS_X86_ENV	        1
+#define AFSLITTLE_ENDIAN	1
+
+#ifdef _KERNEL
+void bcopy(const void *, void *, size_t);
+
+static inline void *memmove(void *dst, const void *src, size_t len) {
+    bcopy(src, dst, len);
+    return(dst);
+}
+#endif
+
+#endif /* AFS_I386_PARAM_H */
diff --git a/src/config/param.obsd49.h b/src/config/param.obsd49.h
new file mode 100644
index 0000000000..be4e889f71
--- /dev/null
+++ b/src/config/param.obsd49.h
@@ -0,0 +1,83 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#ifndef IGNORE_STDS_H
+#include <sys/param.h>
+#endif
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+
+#define AFS_NAMEI_ENV		1	/* User space interface to file system */
+#define AFS_64BIT_ENV		1
+#define AFS_64BIT_CLIENT	1
+#define AFS_64BIT_IOPS_ENV	1	/* Needed for NAMEI */
+
+#define AFS_OBSD_ENV		1
+#define	AFS_OBSD31_ENV		1
+#define	AFS_OBSD32_ENV		1
+#define	AFS_OBSD33_ENV		1
+#define AFS_OBSD34_ENV		1
+#define AFS_OBSD35_ENV		1
+#define AFS_OBSD36_ENV		1
+#define AFS_OBSD37_ENV		1
+#define AFS_OBSD38_ENV		1
+#define AFS_OBSD39_ENV		1
+#define AFS_OBSD40_ENV		1
+#define AFS_OBSD41_ENV		1
+#define AFS_OBSD42_ENV		1
+#define AFS_OBSD43_ENV		1
+#define AFS_OBSD44_ENV		1
+#define AFS_OBSD45_ENV		1
+#define AFS_OBSD46_ENV          1
+#define AFS_OBSD47_ENV          1
+#define AFS_OBSD48_ENV          1
+#define AFS_OBSD49_ENV          1
+#undef  AFS_NONFSTRANS
+#define AFS_NONFSTRANS		1
+#define AFS_VM_RDWR_ENV		1
+#define AFS_VFS_ENV		1
+#define AFS_VFSINCL_ENV		1
+
+#define FTRUNC O_TRUNC
+
+#define AFS_SYSCALL		208
+#define AFS_MOUNT_AFS		"afs"
+
+#define RXK_LISTENER_ENV	1
+#define AFS_GCPAGS	        0	/* if nonzero, garbage collect PAGs */
+#define AFS_USE_GETTIMEOFDAY    1	/* use gettimeofday to implement rx clock */
+
+#ifndef IGNORE_STDS_H
+#include <afs/afs_sysnames.h>
+#endif
+
+#ifndef TAILQ_ENTRY
+#include <sys/queue.h>
+#endif
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#ifdef MULTIPROCESSOR
+#define AFS_GLOBAL_SUNLOCK	1
+#endif
+#define	AFS_SHORTGID		0	/* are group id's short? */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl { NONEXCL, EXCL };
+
+#ifndef MIN
+#define MIN(A,B) ((A) < (B) ? (A) : (B))
+#endif
+#ifndef MAX
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+#endif
+
+#endif /* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+#endif /* _KERNEL */
+
+#endif /* AFS_PARAM_H */
diff --git a/src/config/param.obsd50.h b/src/config/param.obsd50.h
new file mode 100644
index 0000000000..c67fecfcad
--- /dev/null
+++ b/src/config/param.obsd50.h
@@ -0,0 +1,84 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#ifndef IGNORE_STDS_H
+#include <sys/param.h>
+#endif
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+
+#define AFS_NAMEI_ENV		1	/* User space interface to file system */
+#define AFS_64BIT_ENV		1
+#define AFS_64BIT_CLIENT	1
+#define AFS_64BIT_IOPS_ENV	1	/* Needed for NAMEI */
+
+#define AFS_OBSD_ENV		1
+#define	AFS_OBSD31_ENV		1
+#define	AFS_OBSD32_ENV		1
+#define	AFS_OBSD33_ENV		1
+#define AFS_OBSD34_ENV		1
+#define AFS_OBSD35_ENV		1
+#define AFS_OBSD36_ENV		1
+#define AFS_OBSD37_ENV		1
+#define AFS_OBSD38_ENV		1
+#define AFS_OBSD39_ENV		1
+#define AFS_OBSD40_ENV		1
+#define AFS_OBSD41_ENV		1
+#define AFS_OBSD42_ENV		1
+#define AFS_OBSD43_ENV		1
+#define AFS_OBSD44_ENV		1
+#define AFS_OBSD45_ENV		1
+#define AFS_OBSD46_ENV          1
+#define AFS_OBSD47_ENV          1
+#define AFS_OBSD48_ENV          1
+#define AFS_OBSD49_ENV          1
+#define AFS_OBSD50_ENV          1
+#undef  AFS_NONFSTRANS
+#define AFS_NONFSTRANS		1
+#define AFS_VM_RDWR_ENV		1
+#define AFS_VFS_ENV		1
+#define AFS_VFSINCL_ENV		1
+
+#define FTRUNC O_TRUNC
+
+#define AFS_SYSCALL		208
+#define AFS_MOUNT_AFS		"afs"
+
+#define RXK_LISTENER_ENV	1
+#define AFS_GCPAGS	        0	/* if nonzero, garbage collect PAGs */
+#define AFS_USE_GETTIMEOFDAY    1	/* use gettimeofday to implement rx clock */
+
+#ifndef IGNORE_STDS_H
+#include <afs/afs_sysnames.h>
+#endif
+
+#ifndef TAILQ_ENTRY
+#include <sys/queue.h>
+#endif
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#ifdef MULTIPROCESSOR
+#define AFS_GLOBAL_SUNLOCK	1
+#endif
+#define	AFS_SHORTGID		0	/* are group id's short? */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl { NONEXCL, EXCL };
+
+#ifndef MIN
+#define MIN(A,B) ((A) < (B) ? (A) : (B))
+#endif
+#ifndef MAX
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+#endif
+
+#endif /* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+#endif /* _KERNEL */
+
+#endif /* AFS_PARAM_H */
diff --git a/src/config/param.obsd51.h b/src/config/param.obsd51.h
new file mode 100644
index 0000000000..ca21f97bad
--- /dev/null
+++ b/src/config/param.obsd51.h
@@ -0,0 +1,85 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#ifndef IGNORE_STDS_H
+#include <sys/param.h>
+#endif
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+
+#define AFS_NAMEI_ENV		1	/* User space interface to file system */
+#define AFS_64BIT_ENV		1
+#define AFS_64BIT_CLIENT	1
+#define AFS_64BIT_IOPS_ENV	1	/* Needed for NAMEI */
+
+#define AFS_OBSD_ENV		1
+#define	AFS_OBSD31_ENV		1
+#define	AFS_OBSD32_ENV		1
+#define	AFS_OBSD33_ENV		1
+#define AFS_OBSD34_ENV		1
+#define AFS_OBSD35_ENV		1
+#define AFS_OBSD36_ENV		1
+#define AFS_OBSD37_ENV		1
+#define AFS_OBSD38_ENV		1
+#define AFS_OBSD39_ENV		1
+#define AFS_OBSD40_ENV		1
+#define AFS_OBSD41_ENV		1
+#define AFS_OBSD42_ENV		1
+#define AFS_OBSD43_ENV		1
+#define AFS_OBSD44_ENV		1
+#define AFS_OBSD45_ENV		1
+#define AFS_OBSD46_ENV          1
+#define AFS_OBSD47_ENV          1
+#define AFS_OBSD48_ENV          1
+#define AFS_OBSD49_ENV          1
+#define AFS_OBSD50_ENV          1
+#define AFS_OBSD51_ENV          1
+#undef  AFS_NONFSTRANS
+#define AFS_NONFSTRANS		1
+#define AFS_VM_RDWR_ENV		1
+#define AFS_VFS_ENV		1
+#define AFS_VFSINCL_ENV		1
+
+#define FTRUNC O_TRUNC
+
+#define AFS_SYSCALL		208
+#define AFS_MOUNT_AFS		"afs"
+
+#define RXK_LISTENER_ENV	1
+#define AFS_GCPAGS	        0	/* if nonzero, garbage collect PAGs */
+#define AFS_USE_GETTIMEOFDAY    1	/* use gettimeofday to implement rx clock */
+
+#ifndef IGNORE_STDS_H
+#include <afs/afs_sysnames.h>
+#endif
+
+#ifndef TAILQ_ENTRY
+#include <sys/queue.h>
+#endif
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#ifdef MULTIPROCESSOR
+#define AFS_GLOBAL_SUNLOCK	1
+#endif
+#define	AFS_SHORTGID		0	/* are group id's short? */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl { NONEXCL, EXCL };
+
+#ifndef MIN
+#define MIN(A,B) ((A) < (B) ? (A) : (B))
+#endif
+#ifndef MAX
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+#endif
+
+#endif /* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+#endif /* _KERNEL */
+
+#endif /* AFS_PARAM_H */
diff --git a/src/config/param.obsd52.h b/src/config/param.obsd52.h
new file mode 100644
index 0000000000..c95f992293
--- /dev/null
+++ b/src/config/param.obsd52.h
@@ -0,0 +1,86 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#ifndef IGNORE_STDS_H
+#include <sys/param.h>
+#endif
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+
+#define AFS_NAMEI_ENV		1	/* User space interface to file system */
+#define AFS_64BIT_ENV		1
+#define AFS_64BIT_CLIENT	1
+#define AFS_64BIT_IOPS_ENV	1	/* Needed for NAMEI */
+
+#define AFS_OBSD_ENV		1
+#define	AFS_OBSD31_ENV		1
+#define	AFS_OBSD32_ENV		1
+#define	AFS_OBSD33_ENV		1
+#define AFS_OBSD34_ENV		1
+#define AFS_OBSD35_ENV		1
+#define AFS_OBSD36_ENV		1
+#define AFS_OBSD37_ENV		1
+#define AFS_OBSD38_ENV		1
+#define AFS_OBSD39_ENV		1
+#define AFS_OBSD40_ENV		1
+#define AFS_OBSD41_ENV		1
+#define AFS_OBSD42_ENV		1
+#define AFS_OBSD43_ENV		1
+#define AFS_OBSD44_ENV		1
+#define AFS_OBSD45_ENV		1
+#define AFS_OBSD46_ENV          1
+#define AFS_OBSD47_ENV          1
+#define AFS_OBSD48_ENV          1
+#define AFS_OBSD49_ENV          1
+#define AFS_OBSD50_ENV          1
+#define AFS_OBSD51_ENV          1
+#define AFS_OBSD52_ENV          1
+#undef  AFS_NONFSTRANS
+#define AFS_NONFSTRANS		1
+#define AFS_VM_RDWR_ENV		1
+#define AFS_VFS_ENV		1
+#define AFS_VFSINCL_ENV		1
+
+#define FTRUNC O_TRUNC
+
+#define AFS_SYSCALL		208
+#define AFS_MOUNT_AFS		"afs"
+
+#define RXK_LISTENER_ENV	1
+#define AFS_GCPAGS	        0	/* if nonzero, garbage collect PAGs */
+#define AFS_USE_GETTIMEOFDAY    1	/* use gettimeofday to implement rx clock */
+
+#ifndef IGNORE_STDS_H
+#include <afs/afs_sysnames.h>
+#endif
+
+#ifndef TAILQ_ENTRY
+#include <sys/queue.h>
+#endif
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#ifdef MULTIPROCESSOR
+#define AFS_GLOBAL_SUNLOCK	1
+#endif
+#define	AFS_SHORTGID		0	/* are group id's short? */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl { NONEXCL, EXCL };
+
+#ifndef MIN
+#define MIN(A,B) ((A) < (B) ? (A) : (B))
+#endif
+#ifndef MAX
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+#endif
+
+#endif /* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+#endif /* _KERNEL */
+
+#endif /* AFS_PARAM_H */
diff --git a/src/config/param.obsd53.h b/src/config/param.obsd53.h
new file mode 100644
index 0000000000..8a551d2113
--- /dev/null
+++ b/src/config/param.obsd53.h
@@ -0,0 +1,87 @@
+/*
+ * Thanks to Jim Rees and University of Michigan CITI, for the initial
+ * OpenBSD porting work.
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#ifndef IGNORE_STDS_H
+#include <sys/param.h>
+#endif
+
+#define AFS_XBSD_ENV		1	/* {Free,Open,Net}BSD */
+
+#define AFS_NAMEI_ENV		1	/* User space interface to file system */
+#define AFS_64BIT_ENV		1
+#define AFS_64BIT_CLIENT	1
+#define AFS_64BIT_IOPS_ENV	1	/* Needed for NAMEI */
+
+#define AFS_OBSD_ENV		1
+#define	AFS_OBSD31_ENV		1
+#define	AFS_OBSD32_ENV		1
+#define	AFS_OBSD33_ENV		1
+#define AFS_OBSD34_ENV		1
+#define AFS_OBSD35_ENV		1
+#define AFS_OBSD36_ENV		1
+#define AFS_OBSD37_ENV		1
+#define AFS_OBSD38_ENV		1
+#define AFS_OBSD39_ENV		1
+#define AFS_OBSD40_ENV		1
+#define AFS_OBSD41_ENV		1
+#define AFS_OBSD42_ENV		1
+#define AFS_OBSD43_ENV		1
+#define AFS_OBSD44_ENV		1
+#define AFS_OBSD45_ENV		1
+#define AFS_OBSD46_ENV          1
+#define AFS_OBSD47_ENV          1
+#define AFS_OBSD48_ENV          1
+#define AFS_OBSD49_ENV          1
+#define AFS_OBSD50_ENV          1
+#define AFS_OBSD51_ENV          1
+#define AFS_OBSD52_ENV          1
+#define AFS_OBSD53_ENV          1
+#undef  AFS_NONFSTRANS
+#define AFS_NONFSTRANS		1
+#define AFS_VM_RDWR_ENV		1
+#define AFS_VFS_ENV		1
+#define AFS_VFSINCL_ENV		1
+
+#define FTRUNC O_TRUNC
+
+#define AFS_SYSCALL		208
+#define AFS_MOUNT_AFS		"afs"
+
+#define RXK_LISTENER_ENV	1
+#define AFS_GCPAGS	        0	/* if nonzero, garbage collect PAGs */
+#define AFS_USE_GETTIMEOFDAY    1	/* use gettimeofday to implement rx clock */
+
+#ifndef IGNORE_STDS_H
+#include <afs/afs_sysnames.h>
+#endif
+
+#ifndef TAILQ_ENTRY
+#include <sys/queue.h>
+#endif
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#ifdef MULTIPROCESSOR
+#define AFS_GLOBAL_SUNLOCK	1
+#endif
+#define	AFS_SHORTGID		0	/* are group id's short? */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl { NONEXCL, EXCL };
+
+#ifndef MIN
+#define MIN(A,B) ((A) < (B) ? (A) : (B))
+#endif
+#ifndef MAX
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+#endif
+
+#endif /* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+#endif /* _KERNEL */
+
+#endif /* AFS_PARAM_H */