Patchwork [16/23] bsd-user: add shims for stat and file handle related syscalls

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Submitter Stacey Son
Date June 24, 2013, 2:03 a.m.
Message ID <1372039435-41921-17-git-send-email-sson@FreeBSD.org>
Download mbox | patch
Permalink /patch/253923/
State New
Headers show

Comments

Stacey Son - June 24, 2013, 2:03 a.m.
This change adds support for status, file handle, and fcntl related system
calls including stat(), statfs(), fhstatfs(), fcntl() and the many variants.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
---
 bsd-user/Makefile.objs     |    3 +-
 bsd-user/freebsd/os-stat.c |  234 +++++++++++++++++++++++
 bsd-user/freebsd/os-stat.h |  437 ++++++++++++++++++++++++++++++++++++++++++++
 bsd-user/freebsd/qemu-os.h |   10 +
 bsd-user/netbsd/os-stat.c  |    1 +
 bsd-user/netbsd/os-stat.h  |  176 ++++++++++++++++++
 bsd-user/openbsd/os-stat.c |    1 +
 bsd-user/openbsd/os-stat.h |  176 ++++++++++++++++++
 bsd-user/syscall.c         |   76 ++++++++
 bsd-user/syscall_defs.h    |  155 ++++++++++++++++
 10 files changed, 1268 insertions(+), 1 deletions(-)
 create mode 100644 bsd-user/freebsd/os-stat.c
 create mode 100644 bsd-user/freebsd/os-stat.h
 create mode 100644 bsd-user/netbsd/os-stat.c
 create mode 100644 bsd-user/netbsd/os-stat.h
 create mode 100644 bsd-user/openbsd/os-stat.c
 create mode 100644 bsd-user/openbsd/os-stat.h

Patch

diff --git a/bsd-user/Makefile.objs b/bsd-user/Makefile.objs
index 01f315e..cc7a82b 100644
--- a/bsd-user/Makefile.objs
+++ b/bsd-user/Makefile.objs
@@ -1,3 +1,4 @@ 
 obj-y = main.o bsdload.o elfload.o mmap.o signal.o strace.o syscall.o \
 	        uaccess.o bsd-mem.o bsd-proc.o $(TARGET_OS)/os-time.o \
-		    $(TARGET_OS)/os-proc.o bsd-socket.o $(TARGET_OS)/os-socket.o
+		    $(TARGET_OS)/os-proc.o bsd-socket.o $(TARGET_OS)/os-socket.o \
+			$(TARGET_OS)/os-stat.o
diff --git a/bsd-user/freebsd/os-stat.c b/bsd-user/freebsd/os-stat.c
new file mode 100644
index 0000000..50885d1
--- /dev/null
+++ b/bsd-user/freebsd/os-stat.c
@@ -0,0 +1,234 @@ 
+/*
+ *  FreeBSD stat related conversion routines
+ *
+ *  Copyright (c) 2013 Stacey D. Son
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+
+#include "qemu.h"
+#include "qemu-os.h"
+
+/*
+ * stat conversion
+ */
+abi_long h2t_freebsd_stat(abi_ulong target_addr, struct stat *host_st)
+{
+    struct target_freebsd_stat *target_st;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    memset(target_st, 0, sizeof(*target_st));
+    __put_user(host_st->st_dev, &target_st->st_dev);
+    __put_user(host_st->st_ino, &target_st->st_ino);
+    __put_user(host_st->st_mode, &target_st->st_mode);
+    __put_user(host_st->st_nlink, &target_st->st_nlink);
+    __put_user(host_st->st_uid, &target_st->st_uid);
+    __put_user(host_st->st_gid, &target_st->st_gid);
+    __put_user(host_st->st_rdev, &target_st->st_rdev);
+    __put_user(host_st->st_atim.tv_sec, &target_st->st_atim.tv_sec);
+    __put_user(host_st->st_atim.tv_nsec, &target_st->st_atim.tv_nsec);
+    __put_user(host_st->st_mtim.tv_sec, &target_st->st_mtim.tv_sec);
+    __put_user(host_st->st_mtim.tv_nsec, &target_st->st_mtim.tv_nsec);
+    __put_user(host_st->st_ctim.tv_sec, &target_st->st_ctim.tv_sec);
+    __put_user(host_st->st_ctim.tv_nsec, &target_st->st_ctim.tv_nsec);
+    __put_user(host_st->st_size, &target_st->st_size);
+    __put_user(host_st->st_blocks, &target_st->st_blocks);
+    __put_user(host_st->st_blksize, &target_st->st_blksize);
+    __put_user(host_st->st_flags, &target_st->st_flags);
+    __put_user(host_st->st_gen, &target_st->st_gen);
+    /* st_lspare not used */
+    __put_user(host_st->st_birthtim.tv_sec, &target_st->st_birthtim.tv_sec);
+    __put_user(host_st->st_birthtim.tv_nsec, &target_st->st_birthtim.tv_nsec);
+    unlock_user_struct(target_st, target_addr, 1);
+
+    return 0;
+}
+
+abi_long h2t_freebsd_nstat(abi_ulong target_addr, struct stat *host_st)
+{
+    struct target_freebsd_nstat *target_st;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    memset(target_st, 0, sizeof(*target_st));
+    __put_user(host_st->st_dev, &target_st->st_dev);
+    __put_user(host_st->st_ino, &target_st->st_ino);
+    __put_user(host_st->st_mode, &target_st->st_mode);
+    __put_user(host_st->st_nlink, &target_st->st_nlink);
+    __put_user(host_st->st_uid, &target_st->st_uid);
+    __put_user(host_st->st_gid, &target_st->st_gid);
+    __put_user(host_st->st_rdev, &target_st->st_rdev);
+    __put_user(host_st->st_atim.tv_sec, &target_st->st_atim.tv_sec);
+    __put_user(host_st->st_atim.tv_nsec, &target_st->st_atim.tv_nsec);
+    __put_user(host_st->st_mtim.tv_sec, &target_st->st_mtim.tv_sec);
+    __put_user(host_st->st_mtim.tv_nsec, &target_st->st_mtim.tv_nsec);
+    __put_user(host_st->st_ctim.tv_sec, &target_st->st_ctim.tv_sec);
+    __put_user(host_st->st_ctim.tv_nsec, &target_st->st_ctim.tv_nsec);
+    __put_user(host_st->st_size, &target_st->st_size);
+    __put_user(host_st->st_blocks, &target_st->st_blocks);
+    __put_user(host_st->st_blksize, &target_st->st_blksize);
+    __put_user(host_st->st_flags, &target_st->st_flags);
+    __put_user(host_st->st_gen, &target_st->st_gen);
+    __put_user(host_st->st_birthtim.tv_sec, &target_st->st_birthtim.tv_sec);
+    __put_user(host_st->st_birthtim.tv_nsec, &target_st->st_birthtim.tv_nsec);
+    unlock_user_struct(target_st, target_addr, 1);
+
+    return 0;
+}
+
+/*
+ * file handle conversion
+ */
+abi_long t2h_freebsd_fhandle(fhandle_t *host_fh, abi_ulong target_addr)
+{
+    target_freebsd_fhandle_t *target_fh;
+
+    if (!lock_user_struct(VERIFY_READ, target_fh, target_addr, 1)) {
+        return -TARGET_EFAULT;
+    }
+    __get_user(host_fh->fh_fsid.val[0], &target_fh->fh_fsid.val[0]);
+    __get_user(host_fh->fh_fsid.val[1], &target_fh->fh_fsid.val[0]);
+    __get_user(host_fh->fh_fid.fid_len, &target_fh->fh_fid.fid_len);
+    /* u_short         fid_data0; */
+    memcpy(host_fh->fh_fid.fid_data, target_fh->fh_fid.fid_data,
+        TARGET_MAXFIDSZ);
+    unlock_user_struct(target_fh, target_addr, 0);
+    return 0;
+}
+
+abi_long h2t_freebsd_fhandle(abi_ulong target_addr, fhandle_t *host_fh)
+{
+    target_freebsd_fhandle_t *target_fh;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_fh, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    __put_user(host_fh->fh_fsid.val[0], &target_fh->fh_fsid.val[0]);
+    __put_user(host_fh->fh_fsid.val[1], &target_fh->fh_fsid.val[0]);
+    __put_user(host_fh->fh_fid.fid_len, &target_fh->fh_fid.fid_len);
+    /* u_short         fid_data0; */
+    memcpy(target_fh->fh_fid.fid_data, host_fh->fh_fid.fid_data,
+            TARGET_MAXFIDSZ);
+    unlock_user_struct(target_fh, target_addr, 1);
+    return 0;
+}
+
+/*
+ *  file system stat
+ */
+abi_long h2t_freebsd_statfs(abi_ulong target_addr, struct statfs *host_statfs)
+{
+    struct target_freebsd_statfs *target_statfs;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_statfs, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    __put_user(host_statfs->f_version, &target_statfs->f_version);
+    __put_user(host_statfs->f_type, &target_statfs->f_type);
+    __put_user(host_statfs->f_flags, &target_statfs->f_flags);
+    __put_user(host_statfs->f_bsize, &target_statfs->f_bsize);
+    __put_user(host_statfs->f_iosize, &target_statfs->f_iosize);
+    __put_user(host_statfs->f_blocks, &target_statfs->f_blocks);
+    __put_user(host_statfs->f_bfree, &target_statfs->f_bfree);
+    __put_user(host_statfs->f_bavail, &target_statfs->f_bavail);
+    __put_user(host_statfs->f_files, &target_statfs->f_files);
+    __put_user(host_statfs->f_ffree, &target_statfs->f_ffree);
+    __put_user(host_statfs->f_syncwrites, &target_statfs->f_syncwrites);
+    __put_user(host_statfs->f_asyncwrites, &target_statfs->f_asyncwrites);
+    __put_user(host_statfs->f_syncreads, &target_statfs->f_syncreads);
+    __put_user(host_statfs->f_asyncreads, &target_statfs->f_asyncreads);
+    /* uint64_t f_spare[10]; */
+    __put_user(host_statfs->f_namemax, &target_statfs->f_namemax);
+    __put_user(host_statfs->f_owner, &target_statfs->f_owner);
+    __put_user(host_statfs->f_fsid.val[0], &target_statfs->f_fsid.val[0]);
+    __put_user(host_statfs->f_fsid.val[1], &target_statfs->f_fsid.val[1]);
+    /* char f_charspace[80]; */
+    strncpy(&target_statfs->f_fstypename[0], host_statfs->f_fstypename,
+        TARGET_MFSNAMELEN);
+    strncpy(&target_statfs->f_mntfromname[0], host_statfs->f_mntfromname,
+        TARGET_MNAMELEN);
+    strncpy(&target_statfs->f_mntonname[0], host_statfs->f_mntonname,
+        TARGET_MNAMELEN);
+    unlock_user_struct(target_statfs, target_addr, 1);
+    return 0;
+}
+
+/*
+ * fcntl cmd conversion
+ */
+abi_long target_to_host_fcntl_cmd(int cmd)
+{
+
+    switch (cmd) {
+    case TARGET_F_DUPFD:
+        return F_DUPFD;
+
+    case TARGET_F_DUP2FD:
+        return F_DUP2FD;
+
+    case TARGET_F_GETFD:
+        return F_GETFD;
+
+    case TARGET_F_SETFD:
+        return F_SETFD;
+
+    case TARGET_F_GETFL:
+        return F_GETFL;
+
+    case TARGET_F_SETFL:
+        return F_SETFL;
+
+    case TARGET_F_GETOWN:
+        return F_GETOWN;
+
+    case TARGET_F_SETOWN:
+        return F_SETOWN;
+
+    case TARGET_F_GETLK:
+        return F_GETLK;
+
+    case TARGET_F_SETLK:
+        return F_SETLK;
+
+    case TARGET_F_SETLKW:
+        return F_SETLKW;
+
+    case TARGET_F_READAHEAD:
+        return F_READAHEAD;
+
+    case TARGET_F_RDAHEAD:
+        return F_RDAHEAD;
+
+#ifdef F_DUPFD_CLOEXEC
+    case TARGET_F_DUPFD_CLOEXEC:
+        return F_DUPFD_CLOEXEC;
+#endif
+
+#ifdef F_DUP2FD_CLOEXEC
+    case TARGET_F_DUP2FD_CLOEXEC:
+        return F_DUP2FD_CLOEXEC;
+#endif
+
+    default:
+        return -TARGET_EINVAL;
+    }
+}
+
diff --git a/bsd-user/freebsd/os-stat.h b/bsd-user/freebsd/os-stat.h
new file mode 100644
index 0000000..abf92a6
--- /dev/null
+++ b/bsd-user/freebsd/os-stat.h
@@ -0,0 +1,437 @@ 
+/*
+ *  stat related system call shims and definitions
+ *
+ *  Copyright (c) 2013 Stacey D. Son
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __FREEBSD_STAT_H_
+#define __FREEBSD_STAT_H_
+
+#include <sys/types.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <dirent.h>
+
+#include "qemu-os.h"
+
+/* undocumented nstat system calls */
+int nstat(const char *path, struct stat *sb);
+int nlstat(const char *path, struct stat *sb);
+int nfstat(int fd, struct stat *sb);
+
+/* stat(2) */
+static inline abi_long do_freebsd_stat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    struct stat st;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(stat(path(p), &st));
+    UNLOCK_PATH(p, arg1);
+    if (!is_error(ret)) {
+        ret = h2t_freebsd_stat(arg2, &st);
+    }
+    return ret;
+}
+
+/* lstat(2) */
+static inline abi_long do_freebsd_lstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    struct stat st;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(lstat(path(p), &st));
+    UNLOCK_PATH(p, arg1);
+    if (!is_error(ret)) {
+        ret = h2t_freebsd_stat(arg2, &st);
+    }
+    return ret;
+}
+
+/* fstat(2) */
+static inline abi_long do_freebsd_fstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    struct stat st;
+
+    ret = get_errno(fstat(arg1, &st));
+    if (!is_error(ret))  {
+        ret = h2t_freebsd_stat(arg2, &st);
+    }
+    return ret;
+}
+
+/* fstatat(2) */
+static inline abi_long do_freebsd_fstatat(abi_long arg1, abi_long arg2,
+        abi_long arg3, abi_long arg4)
+{
+    abi_long ret;
+    void *p;
+    struct stat st;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(fstatat(arg1, p, &st, arg4));
+    UNLOCK_PATH(p, arg1);
+    if (!is_error(ret)) {
+        ret = h2t_freebsd_stat(arg2, &st);
+    }
+    return ret;
+}
+
+/* undocummented nstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    struct stat st;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(nstat(path(p), &st));
+    UNLOCK_PATH(p, arg1);
+    if (!is_error(ret)) {
+        ret = h2t_freebsd_nstat(arg2, &st);
+    }
+    return ret;
+}
+
+/* undocummented nfstat(int fd, struct nstat *sb) syscall */
+static abi_long do_freebsd_nfstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    struct stat st;
+
+    ret = get_errno(nfstat(arg1, &st));
+    if (!is_error(ret))  {
+        ret = h2t_freebsd_nstat(arg2, &st);
+    }
+    return ret;
+}
+
+/* undocummented nlstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nlstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    struct stat st;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(nlstat(path(p), &st));
+    UNLOCK_PATH(p, arg1);
+    if (!is_error(ret)) {
+        ret = h2t_freebsd_nstat(arg2, &st);
+    }
+    return ret;
+}
+
+/* getfh(2) */
+static abi_long do_freebsd_getfh(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    fhandle_t host_fh;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(getfh(path(p), &host_fh));
+    UNLOCK_PATH(p, arg1);
+    if (is_error(ret)) {
+        return ret;
+    }
+    return h2t_freebsd_fhandle(arg2, &host_fh);
+}
+
+/* lgetfh(2) */
+static inline abi_long do_freebsd_lgetfh(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    fhandle_t host_fh;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(lgetfh(path(p), &host_fh));
+    UNLOCK_PATH(p, arg1);
+    if (is_error(ret)) {
+        return ret;
+    }
+    return h2t_freebsd_fhandle(arg2, &host_fh);
+}
+
+/* fhopen(2) */
+static inline abi_long do_freebsd_fhopen(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    fhandle_t host_fh;
+
+    ret = t2h_freebsd_fhandle(&host_fh, arg1);
+    if (is_error(ret)) {
+        return ret;
+    }
+
+    return get_errno(fhopen(&host_fh, arg2));
+}
+
+/* fhstat(2) */
+static inline abi_long do_freebsd_fhstat(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    fhandle_t host_fh;
+    struct stat host_sb;
+
+    ret = t2h_freebsd_fhandle(&host_fh, arg1);
+    if (is_error(ret)) {
+        return ret;
+    }
+    ret = get_errno(fhstat(&host_fh, &host_sb));
+    if (is_error(ret)) {
+        return ret;
+    }
+    return h2t_freebsd_stat(arg2, &host_sb);
+}
+
+/* fhstatfs(2) */
+static inline abi_long do_freebsd_fhstatfs(abi_ulong target_fhp_addr,
+        abi_ulong target_stfs_addr)
+{
+    abi_long ret;
+    fhandle_t host_fh;
+    struct statfs host_stfs;
+
+    ret = t2h_freebsd_fhandle(&host_fh, target_fhp_addr);
+    if (is_error(ret)) {
+        return ret;
+    }
+    ret = get_errno(fhstatfs(&host_fh, &host_stfs));
+    if (is_error(ret)) {
+        return ret;
+    }
+    return h2t_freebsd_statfs(target_stfs_addr, &host_stfs);
+}
+
+/* statfs(2) */
+static inline abi_long do_freebsd_statfs(abi_long arg1, abi_long arg2)
+{
+    abi_long ret;
+    void *p;
+    struct statfs host_stfs;
+
+    LOCK_PATH(p, arg1);
+    ret = get_errno(statfs(path(p), &host_stfs));
+    UNLOCK_PATH(p, arg1);
+    if (is_error(ret)) {
+        return ret;
+    }
+
+    return h2t_freebsd_statfs(arg2, &host_stfs);
+}
+
+/* fstatfs(2) */
+static inline abi_long do_freebsd_fstatfs(abi_long fd, abi_ulong target_addr)
+{
+    abi_long ret;
+    struct statfs host_stfs;
+
+    ret = get_errno(fstatfs(fd, &host_stfs));
+    if (is_error(ret)) {
+        return ret;
+    }
+
+    return h2t_freebsd_statfs(target_addr, &host_stfs);
+}
+
+/* getfsstat(2) */
+static inline abi_long do_freebsd_getfsstat(abi_ulong target_addr,
+        abi_long bufsize, abi_long flags)
+{
+    abi_long ret;
+    struct statfs *host_stfs;
+    int count;
+    long host_bufsize;
+
+    count = bufsize / sizeof(struct target_freebsd_statfs);
+
+    /* if user buffer is NULL then return number of mounted FS's */
+    if (target_addr == 0 || count == 0) {
+        return get_errno(getfsstat(NULL, 0, flags));
+    }
+
+    /* XXX check count to be reasonable */
+    host_bufsize = sizeof(struct statfs) * count;
+    host_stfs = alloca(host_bufsize);
+    if (!host_stfs) {
+        return -TARGET_EINVAL;
+    }
+
+    ret = count = get_errno(getfsstat(host_stfs, host_bufsize, flags));
+    if (is_error(ret)) {
+        return ret;
+    }
+
+    while (count--) {
+        if (h2t_freebsd_statfs((target_addr +
+                        (count * sizeof(struct target_freebsd_statfs))),
+                    &host_stfs[count])) {
+            return -TARGET_EFAULT;
+        }
+    }
+    return ret;
+}
+
+/* getdents(2) */
+static inline abi_long do_freebsd_getdents(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes)
+{
+    abi_long ret;
+    struct dirent *dirp;
+
+    dirp = lock_user(VERIFY_WRITE, arg2, nbytes, 0);
+    if (dirp == NULL) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(getdents(arg1, (char *)dirp, nbytes));
+    if (!is_error(ret)) {
+        struct dirent *de;
+        int len = ret;
+        int reclen;
+
+        de = dirp;
+        while (len > 0) {
+            reclen = de->d_reclen;
+            if (reclen > len) {
+                return -TARGET_EFAULT;
+            }
+            de->d_reclen = tswap16(reclen);
+            de->d_fileno = tswap32(de->d_fileno);
+            len -= reclen;
+        }
+    }
+    return ret;
+}
+
+/* getdirecentries(2) */
+static inline abi_long do_freebsd_getdirentries(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes, abi_ulong arg4)
+{
+    abi_long ret;
+    struct dirent *dirp;
+    long basep;
+
+    dirp = lock_user(VERIFY_WRITE, arg2, nbytes, 0);
+    if (dirp == NULL) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(getdirentries(arg1, (char *)dirp, nbytes, &basep));
+    if (!is_error(ret)) {
+        struct dirent *de;
+        int len = ret;
+        int reclen;
+
+        de = dirp;
+        while (len > 0) {
+            reclen = de->d_reclen;
+            if (reclen > len) {
+                return -TARGET_EFAULT;
+            }
+            de->d_reclen = tswap16(reclen);
+            de->d_fileno = tswap32(de->d_fileno);
+            len -= reclen;
+            de = (struct dirent *)((void *)de + reclen);
+        }
+    }
+    unlock_user(dirp, arg2, ret);
+    if (arg4) {
+        if (put_user(basep, arg4, abi_ulong)) {
+            return -TARGET_EFAULT;
+        }
+    }
+    return ret;
+}
+
+/* fcntl(2) */
+static inline abi_long do_freebsd_fcntl(abi_long arg1, abi_long arg2,
+        abi_ulong arg3)
+{
+    abi_long ret;
+    int host_cmd;
+    struct flock fl;
+    struct target_freebsd_flock *target_fl;
+
+    host_cmd = target_to_host_fcntl_cmd(arg2);
+    if (host_cmd < 0) {
+        return host_cmd;
+    }
+    switch (arg2) {
+    case TARGET_F_GETLK:
+        if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) {
+            return -TARGET_EFAULT;
+        }
+        __get_user(fl.l_type, &target_fl->l_type);
+        __get_user(fl.l_whence, &target_fl->l_whence);
+        __get_user(fl.l_start, &target_fl->l_start);
+        __get_user(fl.l_len, &target_fl->l_len);
+        __get_user(fl.l_pid, &target_fl->l_pid);
+        __get_user(fl.l_sysid, &target_fl->l_sysid);
+        unlock_user_struct(target_fl, arg3, 0);
+        ret = get_errno(fcntl(arg1, host_cmd, &fl));
+        if (!is_error(ret)) {
+            if (!lock_user_struct(VERIFY_WRITE, target_fl, arg3, 0)) {
+                return -TARGET_EFAULT;
+            }
+            __put_user(fl.l_type, &target_fl->l_type);
+            __put_user(fl.l_whence, &target_fl->l_whence);
+            __put_user(fl.l_start, &target_fl->l_start);
+            __put_user(fl.l_len, &target_fl->l_len);
+            __put_user(fl.l_pid, &target_fl->l_pid);
+            __put_user(fl.l_sysid, &target_fl->l_sysid);
+            unlock_user_struct(target_fl, arg3, 1);
+        }
+        break;
+
+    case TARGET_F_SETLK:
+    case TARGET_F_SETLKW:
+        if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) {
+            return -TARGET_EFAULT;
+        }
+        __get_user(fl.l_type, &target_fl->l_type);
+        __get_user(fl.l_whence, &target_fl->l_whence);
+        __get_user(fl.l_start, &target_fl->l_start);
+        __get_user(fl.l_len, &target_fl->l_len);
+        __get_user(fl.l_pid, &target_fl->l_pid);
+        __get_user(fl.l_sysid, &target_fl->l_sysid);
+        unlock_user_struct(target_fl, arg3, 0);
+        ret = get_errno(fcntl(arg1, host_cmd, &fl));
+        break;
+
+    case TARGET_F_DUPFD:
+    case TARGET_F_DUP2FD:
+    case TARGET_F_GETOWN:
+    case TARGET_F_SETOWN:
+    case TARGET_F_GETFD:
+    case TARGET_F_SETFD:
+    case TARGET_F_GETFL:
+    case TARGET_F_SETFL:
+    case TARGET_F_READAHEAD:
+    case TARGET_F_RDAHEAD:
+    default:
+        ret = get_errno(fcntl(arg1, host_cmd, arg3));
+        break;
+    }
+    return ret;
+}
+
+#endif /* ! __FREEBSD_STAT_H_ */
diff --git a/bsd-user/freebsd/qemu-os.h b/bsd-user/freebsd/qemu-os.h
index ff3a2c2..0dd65f5 100644
--- a/bsd-user/freebsd/qemu-os.h
+++ b/bsd-user/freebsd/qemu-os.h
@@ -21,9 +21,11 @@ 
 #define _QEMU_OS_H_
 
 #include <sys/types.h>
+#include <sys/mount.h>
 #include <sys/timex.h>
 #include <sys/select.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <netinet/in.h>
 
 #include <time.h>
@@ -52,4 +54,12 @@  abi_long t2h_freebsd_cmsg(struct msghdr *msgh,
 abi_long h2t_freebsd_cmsg(struct target_msghdr *target_msgh,
                 struct msghdr *msgh);
 
+/* os-stat.c */
+abi_long h2t_freebsd_stat(abi_ulong target_addr, struct stat *host_st);
+abi_long h2t_freebsd_nstat(abi_ulong target_addr, struct stat *host_st);
+abi_long t2h_freebsd_fhandle(fhandle_t *host_fh, abi_ulong target_addr);
+abi_long h2t_freebsd_fhandle(abi_ulong target_addr, fhandle_t *host_fh);
+abi_long h2t_freebsd_statfs(abi_ulong target_addr, struct statfs *host_statfs);
+abi_long target_to_host_fcntl_cmd(int cmd);
+
 #endif /* !_QEMU_OS_H_ */
diff --git a/bsd-user/netbsd/os-stat.c b/bsd-user/netbsd/os-stat.c
new file mode 100644
index 0000000..11ea122
--- /dev/null
+++ b/bsd-user/netbsd/os-stat.c
@@ -0,0 +1 @@ 
+/* XXX NetBSD stat related helpers */
diff --git a/bsd-user/netbsd/os-stat.h b/bsd-user/netbsd/os-stat.h
new file mode 100644
index 0000000..d3e5bdd
--- /dev/null
+++ b/bsd-user/netbsd/os-stat.h
@@ -0,0 +1,176 @@ 
+/*
+ *  NetBSD stat related system call shims and definitions
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __NETBSD_STAT_H_
+#define __NETBSD_STAT_H_
+
+/*
+ * XXX To support FreeBSD binaries on NetBSD these syscalls will need
+ * to be emulated.
+ */
+
+/* stat(2) */
+static inline abi_long do_freebsd_stat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall stat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* lstat(2) */
+static inline abi_long do_freebsd_lstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall lstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstat(2) */
+static inline abi_long do_freebsd_fstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstatat(2) */
+static inline abi_long do_freebsd_fstatat(abi_long arg1, abi_long arg2,
+        abi_long arg3, abi_long arg4)
+{
+
+    qemu_log("qemu: Unsupported syscall fstatat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nfstat(int fd, struct nstat *sb) syscall */
+static abi_long do_freebsd_nfstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nfstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nlstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nlstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nlstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getfh(2) */
+static abi_long do_freebsd_getfh(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall getfh()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* lgetfh(2) */
+static inline abi_long do_freebsd_lgetfh(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall lgetfh()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhopen(2) */
+static inline abi_long do_freebsd_fhopen(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fhopen()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhstat(2) */
+static inline abi_long do_freebsd_fhstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fhstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhstatfs(2) */
+static inline abi_long do_freebsd_fhstatfs(abi_ulong target_fhp_addr,
+        abi_ulong target_stfs_addr)
+{
+
+    qemu_log("qemu: Unsupported syscall fhstatfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* statfs(2) */
+static inline abi_long do_freebsd_statfs(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall statfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstatfs(2) */
+static inline abi_long do_freebsd_fstatfs(abi_long fd, abi_ulong target_addr)
+{
+
+    qemu_log("qemu: Unsupported syscall fstatfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getfsstat(2) */
+static inline abi_long do_freebsd_getfsstat(abi_ulong target_addr,
+        abi_long bufsize, abi_long flags)
+{
+
+    qemu_log("qemu: Unsupported syscall getfsstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getdents(2) */
+static inline abi_long do_freebsd_getdents(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes)
+{
+
+    qemu_log("qemu: Unsupported syscall getdents()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getdirecentries(2) */
+static inline abi_long do_freebsd_getdirentries(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes, abi_ulong arg4)
+{
+
+    qemu_log("qemu: Unsupported syscall getdirecentries()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fcntl(2) */
+static inline abi_long do_freebsd_fcntl(abi_long arg1, abi_long arg2,
+        abi_ulong arg3)
+{
+
+    qemu_log("qemu: Unsupported syscall fcntl()\n");
+    return -TARGET_ENOSYS;
+}
+
+#endif /* ! __NETBSD_STAT_H_ */
diff --git a/bsd-user/openbsd/os-stat.c b/bsd-user/openbsd/os-stat.c
new file mode 100644
index 0000000..de4e3f5
--- /dev/null
+++ b/bsd-user/openbsd/os-stat.c
@@ -0,0 +1 @@ 
+/* XXX OpenBSD stat related helpers */
diff --git a/bsd-user/openbsd/os-stat.h b/bsd-user/openbsd/os-stat.h
new file mode 100644
index 0000000..1d3850d
--- /dev/null
+++ b/bsd-user/openbsd/os-stat.h
@@ -0,0 +1,176 @@ 
+/*
+ *  OpenBSD stat related system call shims and definitions
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __OPENBSD_STAT_H_
+#define __OPENBSD_STAT_H_
+
+/*
+ * XXX To support FreeBSD binaries on OpenBSD these syscalls will need
+ * to be emulated.
+ */
+
+/* stat(2) */
+static inline abi_long do_freebsd_stat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall stat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* lstat(2) */
+static inline abi_long do_freebsd_lstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall lstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstat(2) */
+static inline abi_long do_freebsd_fstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstatat(2) */
+static inline abi_long do_freebsd_fstatat(abi_long arg1, abi_long arg2,
+        abi_long arg3, abi_long arg4)
+{
+
+    qemu_log("qemu: Unsupported syscall fstatat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nfstat(int fd, struct nstat *sb) syscall */
+static abi_long do_freebsd_nfstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nfstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* undocummented nlstat(char *path, struct nstat *ub) syscall */
+static abi_long do_freebsd_nlstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall nlstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getfh(2) */
+static abi_long do_freebsd_getfh(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall getfh()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* lgetfh(2) */
+static inline abi_long do_freebsd_lgetfh(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall lgetfh()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhopen(2) */
+static inline abi_long do_freebsd_fhopen(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fhopen()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhstat(2) */
+static inline abi_long do_freebsd_fhstat(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall fhstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fhstatfs(2) */
+static inline abi_long do_freebsd_fhstatfs(abi_ulong target_fhp_addr,
+        abi_ulong target_stfs_addr)
+{
+
+    qemu_log("qemu: Unsupported syscall fhstatfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* statfs(2) */
+static inline abi_long do_freebsd_statfs(abi_long arg1, abi_long arg2)
+{
+
+    qemu_log("qemu: Unsupported syscall statfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fstatfs(2) */
+static inline abi_long do_freebsd_fstatfs(abi_long fd, abi_ulong target_addr)
+{
+
+    qemu_log("qemu: Unsupported syscall fstatfs()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getfsstat(2) */
+static inline abi_long do_freebsd_getfsstat(abi_ulong target_addr,
+        abi_long bufsize, abi_long flags)
+{
+
+    qemu_log("qemu: Unsupported syscall getfsstat()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getdents(2) */
+static inline abi_long do_freebsd_getdents(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes)
+{
+
+    qemu_log("qemu: Unsupported syscall getdents()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* getdirecentries(2) */
+static inline abi_long do_freebsd_getdirentries(abi_long arg1, abi_ulong arg2,
+        abi_long nbytes, abi_ulong arg4)
+{
+
+    qemu_log("qemu: Unsupported syscall getdirecentries()\n");
+    return -TARGET_ENOSYS;
+}
+
+/* fcntl(2) */
+static inline abi_long do_freebsd_fcntl(abi_long arg1, abi_long arg2,
+        abi_ulong arg3)
+{
+
+    qemu_log("qemu: Unsupported syscall fcntl()\n");
+    return -TARGET_ENOSYS;
+}
+
+#endif /* ! __OPENBSD_STAT_H_ */
diff --git a/bsd-user/syscall.c b/bsd-user/syscall.c
index 98b1339..fee602b 100644
--- a/bsd-user/syscall.c
+++ b/bsd-user/syscall.c
@@ -44,6 +44,7 @@  static int host_to_target_errno(int err);
 #include "os-proc.h"
 #include "os-signal.h"
 #include "os-socket.h"
+#include "os-stat.h"
 
 /* #define DEBUG */
 
@@ -869,6 +870,81 @@  abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
         ret = do_bsd_freebsd6_ftruncate(arg1, arg2, arg3);
         break;
 
+        /*
+         * stat system calls
+         */
+    case TARGET_FREEBSD_NR_stat: /* stat(2) */
+        ret = do_freebsd_stat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_lstat: /* lstat(2) */
+        ret = do_freebsd_lstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fstat: /* fstat(2) */
+        ret = do_freebsd_fstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fstatat: /* fstatat(2) */
+        ret = do_freebsd_fstatat(arg1, arg2, arg3, arg4);
+        break;
+
+    case TARGET_FREEBSD_NR_nstat: /* undocumented */
+        ret = do_freebsd_nstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_nfstat: /* undocumented */
+        ret = do_freebsd_nfstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_nlstat: /* undocumented */
+        ret = do_freebsd_nlstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_getfh: /* getfh(2) */
+        ret = do_freebsd_getfh(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_lgetfh: /* lgetfh(2) */
+        ret = do_freebsd_lgetfh(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fhopen: /* fhopen(2) */
+        ret = do_freebsd_fhopen(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fhstat: /* fhstat(2) */
+        ret = do_freebsd_fhstat(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fhstatfs: /* fhstatfs(2) */
+        ret = do_freebsd_fhstatfs(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_statfs: /* statfs(2) */
+        ret = do_freebsd_statfs(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_fstatfs: /* fstatfs(2) */
+        ret = do_freebsd_fstatfs(arg1, arg2);
+        break;
+
+    case TARGET_FREEBSD_NR_getfsstat: /* getfsstat(2) */
+        ret = do_freebsd_getfsstat(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_getdents: /* getdents(2) */
+        ret = do_freebsd_getdents(arg1, arg2, arg3);
+        break;
+
+    case TARGET_FREEBSD_NR_getdirentries: /* getdirentries(2) */
+        ret = do_freebsd_getdirentries(arg1, arg2, arg3, arg4);
+        break;
+
+    case TARGET_FREEBSD_NR_fcntl: /* fcntl(2) */
+        ret = do_freebsd_fcntl(arg1, arg2, arg3);
+        break;
+
 
         /*
          * Memory management system calls.
diff --git a/bsd-user/syscall_defs.h b/bsd-user/syscall_defs.h
index 84d2f6f..0db7126 100644
--- a/bsd-user/syscall_defs.h
+++ b/bsd-user/syscall_defs.h
@@ -343,4 +343,159 @@  struct target_ip_mreqn {
     int32_t                 imr_ifindex;
 };
 
+/*
+ * sys/stat.h
+ */
+#if defined(__FreeBSD_version) && __FreeBSD_version < 900000
+#define st_atim st_atimespec
+#define st_ctim st_ctimespec
+#define st_mtim st_mtimespec
+#define st_birthtim st_birthtimespec
+#endif
+
+struct target_freebsd_stat {
+    uint32_t  st_dev;       /* inode's device */
+    uint32_t  st_ino;       /* inode's number */
+    int16_t   st_mode;      /* inode protection mode */
+    int16_t   st_nlink;     /* number of hard links */
+    uint32_t  st_uid;       /* user ID of the file's owner */
+    uint32_t  st_gid;       /* group ID of the file's group */
+    uint32_t  st_rdev;      /* device type */
+    struct  target_freebsd_timespec st_atim; /* time last accessed */
+    struct  target_freebsd_timespec st_mtim; /* time last data modification */
+    struct  target_freebsd_timespec st_ctim; /* time last file status change */
+    int64_t    st_size;     /* file size, in bytes */
+    int64_t    st_blocks;   /* blocks allocated for file */
+    uint32_t   st_blksize;  /* optimal blocksize for I/O */
+    uint32_t   st_flags;    /* user defined flags for file */
+    __uint32_t st_gen;      /* file generation number */
+    __int32_t  st_lspare;
+    struct target_freebsd_timespec st_birthtim; /* time of file creation */
+    /*
+     * Explicitly pad st_birthtim to 16 bytes so that the size of
+     * struct stat is backwards compatible.  We use bitfields instead
+     * of an array of chars so that this doesn't require a C99 compiler
+     * to compile if the size of the padding is 0.  We use 2 bitfields
+     * to cover up to 64 bits on 32-bit machines.  We assume that
+     * CHAR_BIT is 8...
+     */
+    unsigned int:(8 / 2) * (16 - (int)sizeof(struct target_freebsd_timespec));
+    unsigned int:(8 / 2) * (16 - (int)sizeof(struct target_freebsd_timespec));
+} __packed;
+
+/* struct nstat is the same as stat above but without the st_lspare field */
+struct target_freebsd_nstat {
+    uint32_t  st_dev;       /* inode's device */
+    uint32_t  st_ino;       /* inode's number */
+    int16_t   st_mode;      /* inode protection mode */
+    int16_t   st_nlink;     /* number of hard links */
+    uint32_t  st_uid;       /* user ID of the file's owner */
+    uint32_t  st_gid;       /* group ID of the file's group */
+    uint32_t  st_rdev;      /* device type */
+    struct  target_freebsd_timespec st_atim; /* time last accessed */
+    struct  target_freebsd_timespec st_mtim; /* time last data modification */
+    struct  target_freebsd_timespec st_ctim; /* time last file status change */
+    int64_t    st_size;     /* file size, in bytes */
+    int64_t    st_blocks;   /* blocks allocated for file */
+    uint32_t   st_blksize;  /* optimal blocksize for I/O */
+    uint32_t   st_flags;    /* user defined flags for file */
+    __uint32_t st_gen;      /* file generation number */
+    /* __int32_t  st_lspare; */
+    struct target_freebsd_timespec st_birthtim; /* time of file creation */
+    /*
+     * Explicitly pad st_birthtim to 16 bytes so that the size of
+     * struct stat is backwards compatible.  We use bitfields instead
+     * of an array of chars so that this doesn't require a C99 compiler
+     * to compile if the size of the padding is 0.  We use 2 bitfields
+     * to cover up to 64 bits on 32-bit machines.  We assume that
+     * CHAR_BIT is 8...
+     */
+    unsigned int:(8 / 2) * (16 - (int)sizeof(struct target_freebsd_timespec));
+    unsigned int:(8 / 2) * (16 - (int)sizeof(struct target_freebsd_timespec));
+} __packed;
+
+/*
+ * sys/mount.h
+ */
+
+/* filesystem id type */
+typedef struct target_freebsd_fsid { int32_t val[2]; } target_freebsd_fsid_t;
+
+/* filesystem statistics */
+#define TARGET_MFSNAMELEN   16  /* length of type name include null */
+#define TARGET_MNAMELEN     88  /* size of on/from name bufs */
+#define TARGET_STATFS_VERSION   0x20030518  /* current version number */
+struct target_freebsd_statfs {
+    uint32_t f_version; /* structure version number */
+    uint32_t f_type;    /* type of filesystem */
+    uint64_t f_flags;   /* copy of mount exported flags */
+    uint64_t f_bsize;   /* filesystem fragment size */
+    uint64_t f_iosize;  /* optimal transfer block size */
+    uint64_t f_blocks;  /* total data blocks in filesystem */
+    uint64_t f_bfree;   /* free blocks in filesystem */
+    int64_t  f_bavail;  /* free blocks avail to non-superuser */
+    uint64_t f_files;   /* total file nodes in filesystem */
+    int64_t  f_ffree;   /* free nodes avail to non-superuser */
+    uint64_t f_syncwrites;  /* count of sync writes since mount */
+    uint64_t f_asyncwrites; /* count of async writes since mount */
+    uint64_t f_syncreads;   /* count of sync reads since mount */
+    uint64_t f_asyncreads;  /* count of async reads since mount */
+    uint64_t f_spare[10];   /* unused spare */
+    uint32_t f_namemax; /* maximum filename length */
+    uint32_t f_owner;   /* user that mounted the filesystem */
+    target_freebsd_fsid_t   f_fsid; /* filesystem id */
+    char     f_charspare[80];           /* spare string space */
+    char     f_fstypename[TARGET_MFSNAMELEN];   /* filesys type name */
+    char     f_mntfromname[TARGET_MNAMELEN];    /* mount filesystem */
+    char     f_mntonname[TARGET_MNAMELEN];      /* dir on which mounted*/
+};
+
+/* File identifier. These are unique per filesystem on a single machine. */
+#define TARGET_MAXFIDSZ     16
+
+struct target_freebsd_fid {
+    u_short     fid_len;            /* len of data in bytes */
+    u_short     fid_data0;          /* force longword align */
+    char        fid_data[TARGET_MAXFIDSZ];  /* data (variable len) */
+};
+
+/* Generic file handle */
+struct target_freebsd_fhandle {
+    target_freebsd_fsid_t   fh_fsid;    /* Filesystem id of mount point */
+    struct target_freebsd_fid fh_fid;   /* Filesys specific id */
+};
+typedef struct target_freebsd_fhandle target_freebsd_fhandle_t;
+
+/*
+ * sys/fcntl.h
+ */
+#define TARGET_F_DUPFD              0
+#define TARGET_F_GETFD              1
+#define TARGET_F_SETFD              2
+#define TARGET_F_GETFL              3
+#define TARGET_F_SETFL              4
+#define TARGET_F_GETOWN             5
+#define TARGET_F_SETOWN             6
+#define TARGET_F_OGETLK             7
+#define TARGET_F_OSETLK             8
+#define TARGET_F_OSETLKW            9
+#define TARGET_F_DUP2FD             10
+#define TARGET_F_GETLK              11
+#define TARGET_F_SETLK              12
+#define TARGET_F_SETLKW             13
+#define TARGET_F_SETLK_REMOTE       14
+#define TARGET_F_READAHEAD          15
+#define TARGET_F_RDAHEAD            16
+#define TARGET_F_DUPFD_CLOEXEC     17
+#define TARGET_F_DUP2FD_CLOEXEC    18
+
+struct target_freebsd_flock {
+    int64_t l_start;
+    int64_t l_len;
+    int32_t l_pid;
+    int16_t l_type;
+    int16_t l_whence;
+    int32_t l_sysid;
+} QEMU_PACKED;
+
 #endif /* ! _SYSCALL_DEFS_H_ */