diff options
Diffstat (limited to 'sys/sys/hwt.h')
| -rw-r--r-- | sys/sys/hwt.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/sys/sys/hwt.h b/sys/sys/hwt.h new file mode 100644 index 000000000000..78b774a70f9f --- /dev/null +++ b/sys/sys/hwt.h @@ -0,0 +1,129 @@ +/*- + * Copyright (c) 2023-2025 Ruslan Bukin <br@bsdpad.com> + * + * This work was supported by Innovate UK project 105694, "Digital Security + * by Design (DSbD) Technology Platform Prototype". + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* User-visible header. */ + +#include <sys/param.h> +#include <sys/cpuset.h> +#include <sys/types.h> +#include <sys/hwt_record.h> + +#ifndef _SYS_HWT_H_ +#define _SYS_HWT_H_ + +#define HWT_MAGIC 0x42 +#define HWT_IOC_ALLOC _IOW(HWT_MAGIC, 0x00, struct hwt_alloc) +#define HWT_IOC_START _IOW(HWT_MAGIC, 0x01, struct hwt_start) +#define HWT_IOC_STOP _IOW(HWT_MAGIC, 0x02, struct hwt_stop) +#define HWT_IOC_RECORD_GET _IOW(HWT_MAGIC, 0x03, struct hwt_record_get) +#define HWT_IOC_BUFPTR_GET _IOW(HWT_MAGIC, 0x04, struct hwt_bufptr_get) +#define HWT_IOC_SET_CONFIG _IOW(HWT_MAGIC, 0x05, struct hwt_set_config) +#define HWT_IOC_WAKEUP _IOW(HWT_MAGIC, 0x06, struct hwt_wakeup) +#define HWT_IOC_SVC_BUF _IOW(HWT_MAGIC, 0x07, struct hwt_svc_buf) + +#define HWT_BACKEND_MAXNAMELEN 256 + +#define HWT_MODE_THREAD 1 +#define HWT_MODE_CPU 2 + +struct hwt_alloc { + size_t bufsize; + int mode; + pid_t pid; /* thread mode */ + cpuset_t *cpu_map; /* cpu mode only */ + size_t cpusetsize; + const char *backend_name; + int *ident; + int kqueue_fd; +} __aligned(16); + +struct hwt_start { + int reserved; +} __aligned(16); + +struct hwt_stop { + int reserved; +} __aligned(16); + +struct hwt_wakeup { + int reserved; +} __aligned(16); + +struct hwt_record_user_entry { + enum hwt_record_type record_type; + union { + /* + * Used for MMAP, EXECUTABLE, INTERP, + * and KERNEL records. + */ + struct { + char fullpath[MAXPATHLEN]; + uintptr_t addr; + uintptr_t baseaddr; + }; + /* Used for BUFFER records. */ + struct { + int buf_id; + int curpage; + vm_offset_t offset; + }; + /* Used for THREAD_* records. */ + int thread_id; + }; +} __aligned(16); + +struct hwt_record_get { + struct hwt_record_user_entry *records; + int *nentries; + int wait; +} __aligned(16); + +struct hwt_bufptr_get { + int *ident; + vm_offset_t *offset; + uint64_t *data; +} __aligned(16); + +struct hwt_set_config { + /* Configuration of ctx. */ + int pause_on_mmap; + + /* The following passed to backend as is. */ + void *config; + size_t config_size; + int config_version; +} __aligned(16); + +struct hwt_svc_buf { + /* The following passed to backend as is. */ + void *data; + size_t data_size; + int data_version; +} __aligned(16); + +#endif /* !_SYS_HWT_H_ */ |