C++ rpath函数代码示例

static int local_statfs(FsContext *s, V9fsPath *fs_path, struct statfs *stbuf)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    return statfs(rpath(s, path, buffer), stbuf);
}

static int local_truncate(FsContext *ctx, V9fsPath *fs_path, off_t size)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    return truncate(rpath(ctx, path, buffer), size);
}

std::string Sys::GetTempPath() {
	char path[EE_MAX_CFG_PATH_LEN];

	#if EE_PLATFORM == EE_PLATFORM_WIN
		DWORD dwRetVal = GetTempPathA(EE_MAX_CFG_PATH_LEN, path);

		if ( 0 <= dwRetVal || dwRetVal > EE_MAX_CFG_PATH_LEN ) {
			return std::string( "C:\\WINDOWS\\TEMP\\" );
		}
	#elif EE_PLATFORM == EE_PLATFORM_ANDROID
		if ( NULL != Window::cEngine::instance() ) {
			String::StrCopy( path, Window::cEngine::instance()->GetCurrentWindow()->GetInternalStoragePath().c_str(), EE_MAX_CFG_PATH_LEN );
		} else {
			String::StrCopy( path, "/tmp", EE_MAX_CFG_PATH_LEN );
		}
	#else
		char * tmpdir = getenv("TMPDIR");

		if ( NULL != tmpdir ) {
			String::StrCopy( path, tmpdir, EE_MAX_CFG_PATH_LEN );
		} else {
			String::StrCopy( path, "/tmp", EE_MAX_CFG_PATH_LEN );
		}
	#endif

	std::string rpath( path );

	FileSystem::DirPathAddSlashAtEnd( rpath );

	return rpath;
}

static int local_post_create_passthrough(FsContext *fs_ctx, const char *path,
                                         FsCred *credp)
{
    char *buffer;

    buffer = rpath(fs_ctx, path);
    if (lchown(buffer, credp->fc_uid, credp->fc_gid) < 0) {
        /*
         * If we fail to change ownership and if we are
         * using security model none. Ignore the error
         */
        if ((fs_ctx->export_flags & V9FS_SEC_MASK) != V9FS_SM_NONE) {
            goto err;
        }
    }

    if (chmod(buffer, credp->fc_mode & 07777) < 0) {
        goto err;
    }

    g_free(buffer);
    return 0;
err:
    g_free(buffer);
    return -1;
}

static int mp_pacl_setxattr(FsContext *ctx, const char *path, const char *name,
                            void *value, size_t size, int flags)
{
    char buffer[PATH_MAX];
    return lsetxattr(rpath(ctx, path, buffer), MAP_ACL_ACCESS, value,
                     size, flags);
}

static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
                       const char *name, FsCred *credp)
{
    char *path;
    int err = -1;
    int serrno = 0;
    V9fsString fullname;
    char buffer[PATH_MAX];

    v9fs_string_init(&fullname);
    v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
    path = fullname.data;

    /* Determine the security model */
    if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
        err = mknod(rpath(fs_ctx, path, buffer),
                SM_LOCAL_MODE_BITS|S_IFREG, 0);
        if (err == -1) {
            goto out;
        }
        err = local_set_xattr(rpath(fs_ctx, path, buffer), credp);
        if (err == -1) {
            serrno = errno;
            goto err_end;
        }
    } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
               (fs_ctx->export_flags & V9FS_SM_NONE)) {
        err = mknod(rpath(fs_ctx, path, buffer), credp->fc_mode,
                credp->fc_rdev);
        if (err == -1) {
            goto out;
        }
        err = local_post_create_passthrough(fs_ctx, path, credp);
        if (err == -1) {
            serrno = errno;
            goto err_end;
        }
    }
    goto out;

err_end:
    remove(rpath(fs_ctx, path, buffer));
    errno = serrno;
out:
    v9fs_string_free(&fullname);
    return err;
}

static int local_post_create_passthrough(FsContext *fs_ctx, const char *path,
        FsCred *credp)
{
    if (chmod(rpath(fs_ctx, path), credp->fc_mode & 07777) < 0) {
        return -1;
    }
    if (lchown(rpath(fs_ctx, path), credp->fc_uid, credp->fc_gid) < 0) {
        /*
         * If we fail to change ownership and if we are
         * using security model none. Ignore the error
         */
        if (fs_ctx->fs_sm != SM_NONE) {
            return -1;
        }
    }
    return 0;
}

static int local_chown(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    if ((credp->fc_uid == -1 && credp->fc_gid == -1) ||
        (fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) ||
        (fs_ctx->export_flags & V9FS_SM_NONE)) {
        return lchown(rpath(fs_ctx, path, buffer),
                      credp->fc_uid, credp->fc_gid);
    } else if (fs_ctx->export_flags & V9FS_SM_MAPPED) {
        return local_set_xattr(rpath(fs_ctx, path, buffer), credp);
    } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) {
        return local_set_mapped_file_attr(fs_ctx, path, credp);
    }
    return -1;
}

static int local_utimensat(FsContext *s, V9fsPath *fs_path,
                           const struct timespec *buf)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    return qemu_utimens(rpath(s, path, buffer), buf);
}

static int local_utimensat(FsContext *s, V9fsPath *fs_path,
                           const struct timespec *buf)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    return qemu_utimensat(AT_FDCWD, rpath(s, path, buffer), buf,
                          AT_SYMLINK_NOFOLLOW);
}

		static boost::filesystem::path root_name( const boost::filesystem::path& path ) {
			boost::filesystem::path rpath( path );
			if ( boost::filesystem::is_regular_file( path ) ) {
				rpath = path.parent_path();
				if ( boost::filesystem::is_directory( rpath ) && rpath.extension() == L".d" )
					return rpath;
			}
			return rpath;
		}

static int local_open(FsContext *ctx, V9fsPath *fs_path,
                      int flags, V9fsFidOpenState *fs)
{
    char buffer[PATH_MAX];
    char *path = fs_path->data;

    fs->fd = open(rpath(ctx, path, buffer), flags | O_NOFOLLOW);
    return fs->fd;
}

void dosman::Entry::run()
{
    std::string dosbox("dosbox ");
    std::string conf(" -conf ");
    std::string cpath(getConfPath());
    std::string rpath(getRunConfPath());
    std::string line = dosbox + conf + cpath + conf + rpath;
    system(line.c_str());
}

static int local_remove(FsContext *ctx, const char *path)
{
    int err;
    struct stat stbuf;
    char buffer[PATH_MAX];

    if (ctx->export_flags & V9FS_SM_MAPPED_FILE) {
        err =  lstat(rpath(ctx, path, buffer), &stbuf);
        if (err) {
            goto err_out;
        }
        /*
         * If directory remove .virtfs_metadata contained in the
         * directory
         */
        if (S_ISDIR(stbuf.st_mode)) {
            sprintf(buffer, "%s/%s/%s", ctx->fs_root, path, VIRTFS_META_DIR);
            err = remove(buffer);
            if (err < 0 && errno != ENOENT) {
                /*
                 * We didn't had the .virtfs_metadata file. May be file created
                 * in non-mapped mode ?. Ignore ENOENT.
                 */
                goto err_out;
            }
        }
        /*
         * Now remove the name from parent directory
         * .virtfs_metadata directory
         */
        err = remove(local_mapped_attr_path(ctx, path, buffer));
        if (err < 0 && errno != ENOENT) {
            /*
             * We didn't had the .virtfs_metadata file. May be file created
             * in non-mapped mode ?. Ignore ENOENT.
             */
            goto err_out;
        }
    }
    return remove(rpath(ctx, path, buffer));
err_out:
    return err;
}

/*
 * Get the list and pass to each layer to find out whether
 * to send the data or not
 */
ssize_t v9fs_list_xattr(FsContext *ctx, const char *path,
                        void *value, size_t vsize)
{
    ssize_t size = 0;
    char *buffer;
    void *ovalue = value;
    XattrOperations *xops;
    char *orig_value, *orig_value_start;
    ssize_t xattr_len, parsed_len = 0, attr_len;

    /* Get the actual len */
    buffer = rpath(ctx, path);
    xattr_len = llistxattr(buffer, value, 0);
    if (xattr_len <= 0) {
        g_free(buffer);
        return xattr_len;
    }

    /* Now fetch the xattr and find the actual size */
    orig_value = g_malloc(xattr_len);
    xattr_len = llistxattr(buffer, orig_value, xattr_len);
    g_free(buffer);

    /* store the orig pointer */
    orig_value_start = orig_value;
    while (xattr_len > parsed_len) {
        xops = get_xattr_operations(ctx->xops, orig_value);
        if (!xops) {
            goto next_entry;
        }

        if (!value) {
            size += xops->listxattr(ctx, path, orig_value, value, vsize);
        } else {
            size = xops->listxattr(ctx, path, orig_value, value, vsize);
            if (size < 0) {
                goto err_out;
            }
            value += size;
            vsize -= size;
        }
next_entry:
        /* Got the next entry */
        attr_len = strlen(orig_value) + 1;
        parsed_len += attr_len;
        orig_value += attr_len;
    }
    if (value) {
        size = value - ovalue;
    }

err_out:
    g_free(orig_value_start);
    return size;
}