diff --git a/lib/libsysdecode/linux.c b/lib/libsysdecode/linux.c
index 79e71d1207ca..8a3b88a7bfca 100644
--- a/lib/libsysdecode/linux.c
+++ b/lib/libsysdecode/linux.c
@@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$");
 #endif
 
 #include <compat/linux/linux.h>
+#include <compat/linux/linux_file.h>
 #include <compat/linux/linux_timer.h>
 
 #define	X(a,b)	{ a, #b },
@@ -197,3 +198,10 @@ sysdecode_linux_clock_flags(FILE *fp, int flags, int *rem)
 
 	return (print_mask_int(fp, clockflags, flags, rem));
 }
+
+bool
+sysdecode_linux_atflags(FILE *fp, int flag, int *rem)
+{
+
+	return (print_mask_int(fp, atflags, flag, rem));
+}
diff --git a/lib/libsysdecode/mklinuxtables b/lib/libsysdecode/mklinuxtables
index caeeb785b4d3..734d69fca9cf 100644
--- a/lib/libsysdecode/mklinuxtables
+++ b/lib/libsysdecode/mklinuxtables
@@ -88,6 +88,7 @@ cat <<_EOF_
 
 _EOF_
 
+gen_table "atflags"     "LINUX_AT_[A-Z_]+[[:space:]]+[0-9]+"             "compat/linux/linux_file.h"
 gen_table "clockids"    "LINUX_CLOCK_[A-Z_]+[[:space:]]+[0-9]+"          "compat/linux/linux_timer.h"
 gen_table "clockflags"  "LINUX_TIMER_[A-Z_]+[[:space:]]+0x[0-9]+"        "compat/linux/linux_timer.h"
 gen_table "clockcpuids" "LINUX_CPUCLOCK_[A-Z_]+[[:space:]]+[0-9]+"       "compat/linux/linux_timer.h"	"_MASK|_MAX"
diff --git a/lib/libsysdecode/sysdecode.h b/lib/libsysdecode/sysdecode.h
index 4a826f489a16..7b1a77aad9af 100644
--- a/lib/libsysdecode/sysdecode.h
+++ b/lib/libsysdecode/sysdecode.h
@@ -139,6 +139,7 @@ bool	sysdecode_shmflags(FILE *_fp, int _flags, int *_rem);
 
 #define	SYSDECODE_HAVE_LINUX
 
+bool	sysdecode_linux_atflags(FILE *_fp, int _flag, int *_rem);
 void	sysdecode_linux_clockid(FILE *_fp, clockid_t _which);
 bool	sysdecode_linux_clock_flags(FILE *_fp, int _flags, int *_rem);
 const char *sysdecode_linux_signal(int _sig);