Adding qemu as a submodule of KVMFORNFV

This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>

1 files changed, 0 insertions, 1167 deletions

diff --git a/qemu/fsdev/virtfs-proxy-helper.c b/qemu/fsdev/virtfs-proxy-helper.c
deleted file mode 100644
index 54f7ad1c4..000000000
--- a/qemu/fsdev/virtfs-proxy-helper.c
+++ /dev/null
@@ -1,1167 +0,0 @@
-/*
- * Helper for QEMU Proxy FS Driver
- * Copyright IBM, Corp. 2011
- *
- * Authors:
- * M. Mohan Kumar <mohan@in.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- */
-
-#include "qemu/osdep.h"
-#include <sys/resource.h>
-#include <getopt.h>
-#include <syslog.h>
-#include <sys/capability.h>
-#include <sys/fsuid.h>
-#include <sys/vfs.h>
-#include <sys/ioctl.h>
-#include <linux/fs.h>
-#ifdef CONFIG_LINUX_MAGIC_H
-#include <linux/magic.h>
-#endif
-#include "qemu-common.h"
-#include "qemu/sockets.h"
-#include "qemu/xattr.h"
-#include "9p-iov-marshal.h"
-#include "hw/9pfs/9p-proxy.h"
-#include "fsdev/9p-iov-marshal.h"
-
-#define PROGNAME "virtfs-proxy-helper"
-
-#ifndef XFS_SUPER_MAGIC
-#define XFS_SUPER_MAGIC  0x58465342
-#endif
-#ifndef EXT2_SUPER_MAGIC
-#define EXT2_SUPER_MAGIC 0xEF53
-#endif
-#ifndef REISERFS_SUPER_MAGIC
-#define REISERFS_SUPER_MAGIC 0x52654973
-#endif
-#ifndef BTRFS_SUPER_MAGIC
-#define BTRFS_SUPER_MAGIC 0x9123683E
-#endif
-
-static struct option helper_opts[] = {
-    {"fd", required_argument, NULL, 'f'},
-    {"path", required_argument, NULL, 'p'},
-    {"nodaemon", no_argument, NULL, 'n'},
-    {"socket", required_argument, NULL, 's'},
-    {"uid", required_argument, NULL, 'u'},
-    {"gid", required_argument, NULL, 'g'},
-    {},
-};
-
-static bool is_daemon;
-static bool get_version; /* IOC getversion IOCTL supported */
-
-static void GCC_FMT_ATTR(2, 3) do_log(int loglevel, const char *format, ...)
-{
-    va_list ap;
-
-    va_start(ap, format);
-    if (is_daemon) {
-        vsyslog(LOG_CRIT, format, ap);
-    } else {
-        vfprintf(stderr, format, ap);
-    }
-    va_end(ap);
-}
-
-static void do_perror(const char *string)
-{
-    if (is_daemon) {
-        syslog(LOG_CRIT, "%s:%s", string, strerror(errno));
-    } else {
-        fprintf(stderr, "%s:%s\n", string, strerror(errno));
-    }
-}
-
-static int do_cap_set(cap_value_t *cap_value, int size, int reset)
-{
-    cap_t caps;
-    if (reset) {
-        /*
-         * Start with an empty set and set permitted and effective
-         */
-        caps = cap_init();
-        if (caps == NULL) {
-            do_perror("cap_init");
-            return -1;
-        }
-        if (cap_set_flag(caps, CAP_PERMITTED, size, cap_value, CAP_SET) < 0) {
-            do_perror("cap_set_flag");
-            goto error;
-        }
-    } else {
-        caps = cap_get_proc();
-        if (!caps) {
-            do_perror("cap_get_proc");
-            return -1;
-        }
-    }
-    if (cap_set_flag(caps, CAP_EFFECTIVE, size, cap_value, CAP_SET) < 0) {
-        do_perror("cap_set_flag");
-        goto error;
-    }
-    if (cap_set_proc(caps) < 0) {
-        do_perror("cap_set_proc");
-        goto error;
-    }
-    cap_free(caps);
-    return 0;
-
-error:
-    cap_free(caps);
-    return -1;
-}
-
-static int init_capabilities(void)
-{
-    /* helper needs following capabilities only */
-    cap_value_t cap_list[] = {
-        CAP_CHOWN,
-        CAP_DAC_OVERRIDE,
-        CAP_FOWNER,
-        CAP_FSETID,
-        CAP_SETGID,
-        CAP_MKNOD,
-        CAP_SETUID,
-    };
-    return do_cap_set(cap_list, ARRAY_SIZE(cap_list), 1);
-}
-
-static int socket_read(int sockfd, void *buff, ssize_t size)
-{
-    ssize_t retval, total = 0;
-
-    while (size) {
-        retval = read(sockfd, buff, size);
-        if (retval == 0) {
-            return -EIO;
-        }
-        if (retval < 0) {
-            if (errno == EINTR) {
-                continue;
-            }
-            return -errno;
-        }
-        size -= retval;
-        buff += retval;
-        total += retval;
-    }
-    return total;
-}
-
-static int socket_write(int sockfd, void *buff, ssize_t size)
-{
-    ssize_t retval, total = 0;
-
-    while (size) {
-        retval = write(sockfd, buff, size);
-        if (retval < 0) {
-            if (errno == EINTR) {
-                continue;
-            }
-            return -errno;
-        }
-        size -= retval;
-        buff += retval;
-        total += retval;
-    }
-    return total;
-}
-
-static int read_request(int sockfd, struct iovec *iovec, ProxyHeader *header)
-{
-    int retval;
-
-    /*
-     * read the request header.
-     */
-    iovec->iov_len = 0;
-    retval = socket_read(sockfd, iovec->iov_base, PROXY_HDR_SZ);
-    if (retval < 0) {
-        return retval;
-    }
-    iovec->iov_len = PROXY_HDR_SZ;
-    retval = proxy_unmarshal(iovec, 0, "dd", &header->type, &header->size);
-    if (retval < 0) {
-        return retval;
-    }
-    /*
-     * We can't process message.size > PROXY_MAX_IO_SZ.
-     * Treat it as fatal error
-     */
-    if (header->size > PROXY_MAX_IO_SZ) {
-        return -ENOBUFS;
-    }
-    retval = socket_read(sockfd, iovec->iov_base + PROXY_HDR_SZ, header->size);
-    if (retval < 0) {
-        return retval;
-    }
-    iovec->iov_len += header->size;
-    return 0;
-}
-
-static int send_fd(int sockfd, int fd)
-{
-    struct msghdr msg;
-    struct iovec iov;
-    int retval, data;
-    struct cmsghdr *cmsg;
-    union MsgControl msg_control;
-
-    iov.iov_base = &data;
-    iov.iov_len = sizeof(data);
-
-    memset(&msg, 0, sizeof(msg));
-    msg.msg_iov = &iov;
-    msg.msg_iovlen = 1;
-    /* No ancillary data on error */
-    if (fd < 0) {
-        /* fd is really negative errno if the request failed  */
-        data = fd;
-    } else {
-        data = V9FS_FD_VALID;
-        msg.msg_control = &msg_control;
-        msg.msg_controllen = sizeof(msg_control);
-
-        cmsg = &msg_control.cmsg;
-        cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
-        cmsg->cmsg_level = SOL_SOCKET;
-        cmsg->cmsg_type = SCM_RIGHTS;
-        memcpy(CMSG_DATA(cmsg), &fd, sizeof(fd));
-    }
-
-    do {
-        retval = sendmsg(sockfd, &msg, 0);
-    } while (retval < 0 && errno == EINTR);
-    if (fd >= 0) {
-        close(fd);
-    }
-    if (retval < 0) {
-        return retval;
-    }
-    return 0;
-}
-
-static int send_status(int sockfd, struct iovec *iovec, int status)
-{
-    ProxyHeader header;
-    int retval, msg_size;
-
-    if (status < 0) {
-        header.type = T_ERROR;
-    } else {
-        header.type = T_SUCCESS;
-    }
-    header.size = sizeof(status);
-    /*
-     * marshal the return status. We don't check error.
-     * because we are sure we have enough space for the status
-     */
-    msg_size = proxy_marshal(iovec, 0, "ddd", header.type,
-                             header.size, status);
-    if (msg_size < 0) {
-        return msg_size;
-    }
-    retval = socket_write(sockfd, iovec->iov_base, msg_size);
-    if (retval < 0) {
-        return retval;
-    }
-    return 0;
-}
-
-/*
- * from man 7 capabilities, section
- * Effect of User ID Changes on Capabilities:
- * If the effective user ID is changed from nonzero to 0, then the permitted
- * set is copied to the effective set.  If the effective user ID is changed
- * from 0 to nonzero, then all capabilities are are cleared from the effective
- * set.
- *
- * The setfsuid/setfsgid man pages warn that changing the effective user ID may
- * expose the program to unwanted signals, but this is not true anymore: for an
- * unprivileged (without CAP_KILL) program to send a signal, the real or
- * effective user ID of the sending process must equal the real or saved user
- * ID of the target process.  Even when dropping privileges, it is enough to
- * keep the saved UID to a "privileged" value and virtfs-proxy-helper won't
- * be exposed to signals.  So just use setresuid/setresgid.
- */
-static int setugid(int uid, int gid, int *suid, int *sgid)
-{
-    int retval;
-
-    /*
-     * We still need DAC_OVERRIDE because we don't change
-     * supplementary group ids, and hence may be subjected DAC rules
-     */
-    cap_value_t cap_list[] = {
-        CAP_DAC_OVERRIDE,
-    };
-
-    *suid = geteuid();
-    *sgid = getegid();
-
-    if (setresgid(-1, gid, *sgid) == -1) {
-        retval = -errno;
-        goto err_out;
-    }
-
-    if (setresuid(-1, uid, *suid) == -1) {
-        retval = -errno;
-        goto err_sgid;
-    }
-
-    if (uid != 0 || gid != 0) {
-        if (do_cap_set(cap_list, ARRAY_SIZE(cap_list), 0) < 0) {
-            retval = -errno;
-            goto err_suid;
-        }
-    }
-    return 0;
-
-err_suid:
-    if (setresuid(-1, *suid, *suid) == -1) {
-        abort();
-    }
-err_sgid:
-    if (setresgid(-1, *sgid, *sgid) == -1) {
-        abort();
-    }
-err_out:
-    return retval;
-}
-
-/*
- * This is used to reset the ugid back with the saved values
- * There is nothing much we can do checking error values here.
- */
-static void resetugid(int suid, int sgid)
-{
-    if (setresgid(-1, sgid, sgid) == -1) {
-        abort();
-    }
-    if (setresuid(-1, suid, suid) == -1) {
-        abort();
-    }
-}
-
-/*
- * send response in two parts
- * 1) ProxyHeader
- * 2) Response or error status
- * This function should be called with marshaled response
- * send_response constructs header part and error part only.
- * send response sends {ProxyHeader,Response} if the request was success
- * otherwise sends {ProxyHeader,error status}
- */
-static int send_response(int sock, struct iovec *iovec, int size)
-{
-    int retval;
-    ProxyHeader header;
-
-    /*
-     * If response size exceeds available iovec->iov_len,
-     * we return ENOBUFS
-     */
-    if (size > PROXY_MAX_IO_SZ) {
-        size = -ENOBUFS;
-    }
-
-    if (size < 0) {
-        /*
-         * In case of error we would not have got the error encoded
-         * already so encode the error here.
-         */
-        header.type = T_ERROR;
-        header.size = sizeof(size);
-        proxy_marshal(iovec, PROXY_HDR_SZ, "d", size);
-    } else {
-        header.type = T_SUCCESS;
-        header.size = size;
-    }
-    proxy_marshal(iovec, 0, "dd", header.type, header.size);
-    retval = socket_write(sock, iovec->iov_base, header.size + PROXY_HDR_SZ);
-    if (retval < 0) {
-        return retval;
-    }
-    return 0;
-}
-
-/*
- * gets generation number
- * returns -errno on failure and sizeof(generation number) on success
- */
-static int do_getversion(struct iovec *iovec, struct iovec *out_iovec)
-{
-    uint64_t version;
-    int retval = -ENOTTY;
-#ifdef FS_IOC_GETVERSION
-    int fd;
-    V9fsString path;
-#endif
-
-
-    /* no need to issue ioctl */
-    if (!get_version) {
-        version = 0;
-        retval = proxy_marshal(out_iovec, PROXY_HDR_SZ, "q", version);
-        return retval;
-    }
-#ifdef FS_IOC_GETVERSION
-    retval = proxy_unmarshal(iovec, PROXY_HDR_SZ, "s", &path);
-    if (retval < 0) {
-        return retval;
-    }
-
-    fd = open(path.data, O_RDONLY);
-    if (fd < 0) {
-        retval = -errno;
-        goto err_out;
-    }
-    if (ioctl(fd, FS_IOC_GETVERSION, &version) < 0) {
-        retval = -errno;
-    } else {
-        retval = proxy_marshal(out_iovec, PROXY_HDR_SZ, "q", version);
-    }
-    close(fd);
-err_out:
-    v9fs_string_free(&path);
-#endif
-    return retval;
-}
-
-static int do_getxattr(int type, struct iovec *iovec, struct iovec *out_iovec)
-{
-    int size = 0, offset, retval;
-    V9fsString path, name, xattr;
-
-    v9fs_string_init(&xattr);
-    v9fs_string_init(&path);
-    retval = proxy_unmarshal(iovec, PROXY_HDR_SZ, "ds", &size, &path);
-    if (retval < 0) {
-        return retval;
-    }
-    offset = PROXY_HDR_SZ + retval;
-
-    if (size) {
-        xattr.data = g_malloc(size);
-        xattr.size = size;
-    }
-    switch (type) {
-    case T_LGETXATTR:
-        v9fs_string_init(&name);
-        retval = proxy_unmarshal(iovec, offset, "s", &name);
-        if (retval > 0) {
-            retval = lgetxattr(path.data, name.data, xattr.data, size);
-            if (retval < 0) {
-                retval = -errno;
-            } else {
-                xattr.size = retval;
-            }
-        }
-        v9fs_string_free(&name);
-        break;
-    case T_LLISTXATTR:
-        retval = llistxattr(path.data, xattr.data, size);
-        if (retval < 0) {
-            retval = -errno;
-        } else {
-            xattr.size = retval;
-        }
-        break;
-    }
-    if (retval < 0) {
-        goto err_out;
-    }
-
-    if (!size) {
-        proxy_marshal(out_iovec, PROXY_HDR_SZ, "d", retval);
-        retval = sizeof(retval);
-    } else {
-        retval = proxy_marshal(out_iovec, PROXY_HDR_SZ, "s", &xattr);
-    }
-err_out:
-    v9fs_string_free(&xattr);
-    v9fs_string_free(&path);
-    return retval;
-}
-
-static void stat_to_prstat(ProxyStat *pr_stat, struct stat *stat)
-{
-    memset(pr_stat, 0, sizeof(*pr_stat));
-    pr_stat->st_dev = stat->st_dev;
-    pr_stat->st_ino = stat->st_ino;
-    pr_stat->st_nlink = stat->st_nlink;
-    pr_stat->st_mode = stat->st_mode;
-    pr_stat->st_uid = stat->st_uid;
-    pr_stat->st_gid = stat->st_gid;
-    pr_stat->st_rdev = stat->st_rdev;
-    pr_stat->st_size = stat->st_size;
-    pr_stat->st_blksize = stat->st_blksize;
-    pr_stat->st_blocks = stat->st_blocks;
-    pr_stat->st_atim_sec = stat->st_atim.tv_sec;
-    pr_stat->st_atim_nsec = stat->st_atim.tv_nsec;
-    pr_stat->st_mtim_sec = stat->st_mtim.tv_sec;
-    pr_stat->st_mtim_nsec = stat->st_mtim.tv_nsec;
-    pr_stat->st_ctim_sec = stat->st_ctim.tv_sec;
-    pr_stat->st_ctim_nsec = stat->st_ctim.tv_nsec;
-}
-
-static void statfs_to_prstatfs(ProxyStatFS *pr_stfs, struct statfs *stfs)
-{
-    memset(pr_stfs, 0, sizeof(*pr_stfs));
-    pr_stfs->f_type = stfs->f_type;
-    pr_stfs->f_bsize = stfs->f_bsize;
-    pr_stfs->f_blocks = stfs->f_blocks;
-    pr_stfs->f_bfree = stfs->f_bfree;
-    pr_stfs->f_bavail = stfs->f_bavail;
-    pr_stfs->f_files = stfs->f_files;
-    pr_stfs->f_ffree = stfs->f_ffree;
-    pr_stfs->f_fsid[0] = stfs->f_fsid.__val[0];
-    pr_stfs->f_fsid[1] = stfs->f_fsid.__val[1];
-    pr_stfs->f_namelen = stfs->f_namelen;
-    pr_stfs->f_frsize = stfs->f_frsize;
-}
-
-/*
- * Gets stat/statfs information and packs in out_iovec structure
- * on success returns number of bytes packed in out_iovec struture
- * otherwise returns -errno
- */
-static int do_stat(int type, struct iovec *iovec, struct iovec *out_iovec)
-{
-    int retval;
-    V9fsString path;
-    ProxyStat pr_stat;
-    ProxyStatFS pr_stfs;
-    struct stat st_buf;
-    struct statfs stfs_buf;
-
-    v9fs_string_init(&path);
-    retval = proxy_unmarshal(iovec, PROXY_HDR_SZ, "s", &path);
-    if (retval < 0) {
-        return retval;
-    }
-
-    switch (type) {
-    case T_LSTAT:
-        retval = lstat(path.data, &st_buf);
-        if (retval < 0) {
-            retval = -errno;
-        } else {
-            stat_to_prstat(&pr_stat, &st_buf);
-            retval = proxy_marshal(out_iovec, PROXY_HDR_SZ,
-                                   "qqqdddqqqqqqqqqq", pr_stat.st_dev,
-                                   pr_stat.st_ino, pr_stat.st_nlink,
-                                   pr_stat.st_mode, pr_stat.st_uid,
-                                   pr_stat.st_gid, pr_stat.st_rdev,
-                                   pr_stat.st_size, pr_stat.st_blksize,
-                                   pr_stat.st_blocks,
-                                   pr_stat.st_atim_sec, pr_stat.st_atim_nsec,
-                                   pr_stat.st_mtim_sec, pr_stat.st_mtim_nsec,
-                                   pr_stat.st_ctim_sec, pr_stat.st_ctim_nsec);
-        }
-        break;
-    case T_STATFS:
-        retval = statfs(path.data, &stfs_buf);
-        if (retval < 0) {
-            retval = -errno;
-        } else {
-            statfs_to_prstatfs(&pr_stfs, &stfs_buf);
-            retval = proxy_marshal(out_iovec, PROXY_HDR_SZ,
-                                   "qqqqqqqqqqq", pr_stfs.f_type,
-                                   pr_stfs.f_bsize, pr_stfs.f_blocks,
-                                   pr_stfs.f_bfree, pr_stfs.f_bavail,
-                                   pr_stfs.f_files, pr_stfs.f_ffree,
-                                   pr_stfs.f_fsid[0], pr_stfs.f_fsid[1],
-                                   pr_stfs.f_namelen, pr_stfs.f_frsize);
-        }
-        break;
-    }
-    v9fs_string_free(&path);
-    return retval;
-}
-
-static int do_readlink(struct iovec *iovec, struct iovec *out_iovec)
-{
-    char *buffer;
-    int size, retval;
-    V9fsString target, path;
-
-    v9fs_string_init(&path);
-    retval = proxy_unmarshal(iovec, PROXY_HDR_SZ, "sd", &path, &size);
-    if (retval < 0) {
-        v9fs_string_free(&path);
-        return retval;
-    }
-    buffer = g_malloc(size);
-    v9fs_string_init(&target);
-    retval = readlink(path.data, buffer, size - 1);
-    if (retval > 0) {
-        buffer[retval] = '\0';
-        v9fs_string_sprintf(&target, "%s", buffer);
-        retval = proxy_marshal(out_iovec, PROXY_HDR_SZ, "s", &target);
-    } else {
-        retval = -errno;
-    }
-    g_free(buffer);
-    v9fs_string_free(&target);
-    v9fs_string_free(&path);
-    return retval;
-}
-
-/*
- * create other filesystem objects and send 0 on success
- * return -errno on error
- */
-static int do_create_others(int type, struct iovec *iovec)
-{
-    dev_t rdev;
-    int retval = 0;
-    int offset = PROXY_HDR_SZ;
-    V9fsString oldpath, path;
-    int mode, uid, gid, cur_uid, cur_gid;
-
-    v9fs_string_init(&path);
-    v9fs_string_init(&oldpath);
-
-    retval = proxy_unmarshal(iovec, offset, "dd", &uid, &gid);
-    if (retval < 0) {
-        return retval;
-    }
-    offset += retval;
-    retval = setugid(uid, gid, &cur_uid, &cur_gid);
-    if (retval < 0) {
-        goto unmarshal_err_out;
-    }
-    switch (type) {
-    case T_MKNOD:
-        retval = proxy_unmarshal(iovec, offset, "sdq", &path, &mode, &rdev);
-        if (retval < 0) {
-            goto err_out;
-        }
-        retval = mknod(path.data, mode, rdev);
-        break;
-    case T_MKDIR:
-        retval = proxy_unmarshal(iovec, offset, "sd", &path, &mode);
-        if (retval < 0) {
-            goto err_out;
-        }
-        retval = mkdir(path.data, mode);
-        break;
-    case T_SYMLINK:
-        retval = proxy_unmarshal(iovec, offset, "ss", &oldpath, &path);
-        if (retval < 0) {
-            goto err_out;
-        }
-        retval = symlink(oldpath.data, path.data);
-        break;
-    }
-    if (retval < 0) {
-        retval = -errno;
-    }
-
-err_out:
-    resetugid(cur_uid, cur_gid);
-unmarshal_err_out:
-    v9fs_string_free(&path);
-    v9fs_string_free(&oldpath);
-    return retval;
-}
-
-/*
- * create a file and send fd on success
- * return -errno on error
- */
-static int do_create(struct iovec *iovec)
-{
-    int ret;
-    V9fsString path;
-    int flags, mode, uid, gid, cur_uid, cur_gid;
-
-    v9fs_string_init(&path);
-    ret = proxy_unmarshal(iovec, PROXY_HDR_SZ, "sdddd",
-                          &path, &flags, &mode, &uid, &gid);
-    if (ret < 0) {
-        goto unmarshal_err_out;
-    }
-    ret = setugid(uid, gid, &cur_uid, &cur_gid);
-    if (ret < 0) {
-        goto unmarshal_err_out;
-    }
-    ret = open(path.data, flags, mode);
-    if (ret < 0) {
-        ret = -errno;
-    }
-
-    resetugid(cur_uid, cur_gid);
-unmarshal_err_out:
-    v9fs_string_free(&path);
-    return ret;
-}
-
-/*
- * open a file and send fd on success
- * return -errno on error
- */
-static int do_open(struct iovec *iovec)
-{
-    int flags, ret;
-    V9fsString path;
-
-    v9fs_string_init(&path);
-    ret = proxy_unmarshal(iovec, PROXY_HDR_SZ, "sd", &path, &flags);
-    if (ret < 0) {
-        goto err_out;
-    }
-    ret = open(path.data, flags);
-    if (ret < 0) {
-        ret = -errno;
-    }
-err_out:
-    v9fs_string_free(&path);
-    return ret;
-}
-
-/* create unix domain socket and return the descriptor */
-static int proxy_socket(const char *path, uid_t uid, gid_t gid)
-{
-    int sock, client;
-    struct sockaddr_un proxy, qemu;
-    socklen_t size;
-
-    /* requested socket already exists, refuse to start */
-    if (!access(path, F_OK)) {
-        do_log(LOG_CRIT, "socket already exists\n");
-        return -1;
-    }
-
-    if (strlen(path) >= sizeof(proxy.sun_path)) {
-        do_log(LOG_CRIT, "UNIX domain socket path exceeds %zu characters\n",
-               sizeof(proxy.sun_path));
-        return -1;
-    }
-
-    sock = socket(AF_UNIX, SOCK_STREAM, 0);
-    if (sock < 0) {
-        do_perror("socket");
-        return -1;
-    }
-
-    /* mask other part of mode bits */
-    umask(7);
-
-    proxy.sun_family = AF_UNIX;
-    strcpy(proxy.sun_path, path);
-    if (bind(sock, (struct sockaddr *)&proxy,
-            sizeof(struct sockaddr_un)) < 0) {
-        do_perror("bind");
-        goto error;
-    }
-    if (chown(proxy.sun_path, uid, gid) < 0) {
-        do_perror("chown");
-        goto error;
-    }
-    if (listen(sock, 1) < 0) {
-        do_perror("listen");
-        goto error;
-    }
-
-    size = sizeof(qemu);
-    client = accept(sock, (struct sockaddr *)&qemu, &size);
-    if (client < 0) {
-        do_perror("accept");
-        goto error;
-    }
-    close(sock);
-    return client;
-
-error:
-    close(sock);
-    return -1;
-}
-
-static void usage(char *prog)
-{
-    fprintf(stderr, "usage: %s\n"
-            " -p|--path <path> 9p path to export\n"
-            " {-f|--fd <socket-descriptor>} socket file descriptor to be used\n"
-            " {-s|--socket <socketname> socket file used for communication\n"
-            " \t-u|--uid <uid> -g|--gid <gid>} - uid:gid combination to give "
-            " access to this socket\n"
-            " \tNote: -s & -f can not be used together\n"
-            " [-n|--nodaemon] Run as a normal program\n",
-            basename(prog));
-}
-
-static int process_reply(int sock, int type,
-                         struct iovec *out_iovec, int retval)
-{
-    switch (type) {
-    case T_OPEN:
-    case T_CREATE:
-        if (send_fd(sock, retval) < 0) {
-            return -1;
-        }
-        break;
-    case T_MKNOD:
-    case T_MKDIR:
-    case T_SYMLINK:
-    case T_LINK:
-    case T_CHMOD:
-    case T_CHOWN:
-    case T_TRUNCATE:
-    case T_UTIME:
-    case T_RENAME:
-    case T_REMOVE:
-    case T_LSETXATTR:
-    case T_LREMOVEXATTR:
-        if (send_status(sock, out_iovec, retval) < 0) {
-            return -1;
-        }
-        break;
-    case T_LSTAT:
-    case T_STATFS:
-    case T_READLINK:
-    case T_LGETXATTR:
-    case T_LLISTXATTR:
-    case T_GETVERSION:
-        if (send_response(sock, out_iovec, retval) < 0) {
-            return -1;
-        }
-        break;
-    default:
-        return -1;
-        break;
-    }
-    return 0;
-}
-
-static int process_requests(int sock)
-{
-    int flags;
-    int size = 0;
-    int retval = 0;
-    uint64_t offset;
-    ProxyHeader header;
-    int mode, uid, gid;
-    V9fsString name, value;
-    struct timespec spec[2];
-    V9fsString oldpath, path;
-    struct iovec in_iovec, out_iovec;
-
-    in_iovec.iov_base  = g_malloc(PROXY_MAX_IO_SZ + PROXY_HDR_SZ);
-    in_iovec.iov_len   = PROXY_MAX_IO_SZ + PROXY_HDR_SZ;
-    out_iovec.iov_base = g_malloc(PROXY_MAX_IO_SZ + PROXY_HDR_SZ);
-    out_iovec.iov_len  = PROXY_MAX_IO_SZ + PROXY_HDR_SZ;
-
-    while (1) {
-        /*
-         * initialize the header type, so that we send
-         * response to proper request type.
-         */
-        header.type = 0;
-        retval = read_request(sock, &in_iovec, &header);
-        if (retval < 0) {
-            goto err_out;
-        }
-
-        switch (header.type) {
-        case T_OPEN:
-            retval = do_open(&in_iovec);
-            break;
-        case T_CREATE:
-            retval = do_create(&in_iovec);
-            break;
-        case T_MKNOD:
-        case T_MKDIR:
-        case T_SYMLINK:
-            retval = do_create_others(header.type, &in_iovec);
-            break;
-        case T_LINK:
-            v9fs_string_init(&path);
-            v9fs_string_init(&oldpath);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ,
-                                     "ss", &oldpath, &path);
-            if (retval > 0) {
-                retval = link(oldpath.data, path.data);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&oldpath);
-            v9fs_string_free(&path);
-            break;
-        case T_LSTAT:
-        case T_STATFS:
-            retval = do_stat(header.type, &in_iovec, &out_iovec);
-            break;
-        case T_READLINK:
-            retval = do_readlink(&in_iovec, &out_iovec);
-            break;
-        case T_CHMOD:
-            v9fs_string_init(&path);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ,
-                                     "sd", &path, &mode);
-            if (retval > 0) {
-                retval = chmod(path.data, mode);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            break;
-        case T_CHOWN:
-            v9fs_string_init(&path);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sdd", &path,
-                                     &uid, &gid);
-            if (retval > 0) {
-                retval = lchown(path.data, uid, gid);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            break;
-        case T_TRUNCATE:
-            v9fs_string_init(&path);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sq",
-                                     &path, &offset);
-            if (retval > 0) {
-                retval = truncate(path.data, offset);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            break;
-        case T_UTIME:
-            v9fs_string_init(&path);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sqqqq", &path,
-                                     &spec[0].tv_sec, &spec[0].tv_nsec,
-                                     &spec[1].tv_sec, &spec[1].tv_nsec);
-            if (retval > 0) {
-                retval = qemu_utimens(path.data, spec);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            break;
-        case T_RENAME:
-            v9fs_string_init(&path);
-            v9fs_string_init(&oldpath);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ,
-                                     "ss", &oldpath, &path);
-            if (retval > 0) {
-                retval = rename(oldpath.data, path.data);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&oldpath);
-            v9fs_string_free(&path);
-            break;
-        case T_REMOVE:
-            v9fs_string_init(&path);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "s", &path);
-            if (retval > 0) {
-                retval = remove(path.data);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            break;
-        case T_LGETXATTR:
-        case T_LLISTXATTR:
-            retval = do_getxattr(header.type, &in_iovec, &out_iovec);
-            break;
-        case T_LSETXATTR:
-            v9fs_string_init(&path);
-            v9fs_string_init(&name);
-            v9fs_string_init(&value);
-            retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sssdd", &path,
-                                     &name, &value, &size, &flags);
-            if (retval > 0) {
-                retval = lsetxattr(path.data,
-                                   name.data, value.data, size, flags);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            v9fs_string_free(&name);
-            v9fs_string_free(&value);
-            break;
-        case T_LREMOVEXATTR:
-            v9fs_string_init(&path);
-            v9fs_string_init(&name);
-            retval = proxy_unmarshal(&in_iovec,
-                                     PROXY_HDR_SZ, "ss", &path, &name);
-            if (retval > 0) {
-                retval = lremovexattr(path.data, name.data);
-                if (retval < 0) {
-                    retval = -errno;
-                }
-            }
-            v9fs_string_free(&path);
-            v9fs_string_free(&name);
-            break;
-        case T_GETVERSION:
-            retval = do_getversion(&in_iovec, &out_iovec);
-            break;
-        default:
-            goto err_out;
-            break;
-        }
-
-        if (process_reply(sock, header.type, &out_iovec, retval) < 0) {
-            goto err_out;
-        }
-    }
-err_out:
-    g_free(in_iovec.iov_base);
-    g_free(out_iovec.iov_base);
-    return -1;
-}
-
-int main(int argc, char **argv)
-{
-    int sock;
-    uid_t own_u;
-    gid_t own_g;
-    char *rpath = NULL;
-    char *sock_name = NULL;
-    struct stat stbuf;
-    int c, option_index;
-#ifdef FS_IOC_GETVERSION
-    int retval;
-    struct statfs st_fs;
-#endif
-
-    is_daemon = true;
-    sock = -1;
-    own_u = own_g = -1;
-    while (1) {
-        option_index = 0;
-        c = getopt_long(argc, argv, "p:nh?f:s:u:g:", helper_opts,
-                        &option_index);
-        if (c == -1) {
-            break;
-        }
-        switch (c) {
-        case 'p':
-            rpath = g_strdup(optarg);
-            break;
-        case 'n':
-            is_daemon = false;
-            break;
-        case 'f':
-            sock = atoi(optarg);
-            break;
-        case 's':
-            sock_name = g_strdup(optarg);
-            break;
-        case 'u':
-            own_u = atoi(optarg);
-            break;
-        case 'g':
-            own_g = atoi(optarg);
-            break;
-        case '?':
-        case 'h':
-        default:
-            usage(argv[0]);
-            exit(EXIT_FAILURE);
-        }
-    }
-
-    /* Parameter validation */
-    if ((sock_name == NULL && sock == -1) || rpath == NULL) {
-        fprintf(stderr, "socket, socket descriptor or path not specified\n");
-        usage(argv[0]);
-        return -1;
-    }
-
-    if (sock_name && sock != -1) {
-        fprintf(stderr, "both named socket and socket descriptor specified\n");
-        usage(argv[0]);
-        exit(EXIT_FAILURE);
-    }
-
-    if (sock_name && (own_u == -1 || own_g == -1)) {
-        fprintf(stderr, "owner uid:gid not specified, ");
-        fprintf(stderr,
-                "owner uid:gid specifies who can access the socket file\n");
-        usage(argv[0]);
-        exit(EXIT_FAILURE);
-    }
-
-    if (lstat(rpath, &stbuf) < 0) {
-        fprintf(stderr, "invalid path \"%s\" specified, %s\n",
-                rpath, strerror(errno));
-        exit(EXIT_FAILURE);
-    }
-
-    if (!S_ISDIR(stbuf.st_mode)) {
-        fprintf(stderr, "specified path \"%s\" is not directory\n", rpath);
-        exit(EXIT_FAILURE);
-    }
-
-    if (is_daemon) {
-        if (daemon(0, 0) < 0) {
-            fprintf(stderr, "daemon call failed\n");
-            exit(EXIT_FAILURE);
-        }
-        openlog(PROGNAME, LOG_PID, LOG_DAEMON);
-    }
-
-    do_log(LOG_INFO, "Started\n");
-    if (sock_name) {
-        sock = proxy_socket(sock_name, own_u, own_g);
-        if (sock < 0) {
-            goto error;
-        }
-    }
-
-    if (chdir("/") < 0) {
-        do_perror("chdir");
-        goto error;
-    }
-    if (chroot(rpath) < 0) {
-        do_perror("chroot");
-        goto error;
-    }
-
-    get_version = false;
-#ifdef FS_IOC_GETVERSION
-    /* check whether underlying FS support IOC_GETVERSION */
-    retval = statfs("/", &st_fs);
-    if (!retval) {
-        switch (st_fs.f_type) {
-        case EXT2_SUPER_MAGIC:
-        case BTRFS_SUPER_MAGIC:
-        case REISERFS_SUPER_MAGIC:
-        case XFS_SUPER_MAGIC:
-            get_version = true;
-            break;
-        }
-    }
-#endif
-
-    umask(0);
-    if (init_capabilities() < 0) {
-        goto error;
-    }
-
-    process_requests(sock);
-error:
-    do_log(LOG_INFO, "Done\n");
-    closelog();
-    return 0;
-}