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android / platform / external / strace / b65e7a8b16e6edd4c1591d9f94d36eec9cfe3ea0 / . / tests / bpf.c
blob: 44aac051214a700677fe628369aabbc92fa2e847 [file] [log] [blame]
/*
* Check bpf syscall decoding.
*
* Copyright (c) 2015-2017 Dmitry V. Levin <[email protected]>
* Copyright (c) 2015-2018 The strace developers.
* All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
#include "tests.h"
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <asm/unistd.h>
#include "scno.h"
#ifdef HAVE_LINUX_BPF_H
# include <linux/bpf.h>
#endif
#include "bpf_attr.h"
#include "print_fields.h"
#include "xlat.h"
#include "xlat/bpf_commands.h"
#if defined MPERS_IS_m32 || SIZEOF_KERNEL_LONG_T > 4
# define BIG_ADDR(addr64_, addr32_) addr64_
# define BIG_ADDR_MAYBE(addr_)
#elif defined __arm__ || defined __i386__ || defined __mips__ \
|| defined __powerpc__ || defined __riscv__ || defined __s390__ \
|| defined __sparc__ || defined __tile__
# define BIG_ADDR(addr64_, addr32_) addr64_ " or " addr32_
# define BIG_ADDR_MAYBE(addr_) addr_ " or "
#else
# define BIG_ADDR(addr64_, addr32_) addr32_
# define BIG_ADDR_MAYBE(addr_)
#endif
#ifndef HAVE_STRUCT_BPF_INSN
struct bpf_insn {
uint8_t code;
uint8_t dst_reg:4;
uint8_t src_reg:4;
int16_t off;
int32_t imm;
};
#endif
#define BPF_ATTR_DATA_FIELD(cmd_) struct cmd_ ## _struct cmd_ ## _data
union bpf_attr_data {
BPF_ATTR_DATA_FIELD(BPF_MAP_CREATE);
BPF_ATTR_DATA_FIELD(BPF_MAP_LOOKUP_ELEM);
BPF_ATTR_DATA_FIELD(BPF_MAP_UPDATE_ELEM);
BPF_ATTR_DATA_FIELD(BPF_MAP_DELETE_ELEM);
BPF_ATTR_DATA_FIELD(BPF_MAP_GET_NEXT_KEY);
BPF_ATTR_DATA_FIELD(BPF_PROG_LOAD);
BPF_ATTR_DATA_FIELD(BPF_OBJ_PIN);
BPF_ATTR_DATA_FIELD(BPF_PROG_ATTACH);
BPF_ATTR_DATA_FIELD(BPF_PROG_DETACH);
BPF_ATTR_DATA_FIELD(BPF_PROG_TEST_RUN);
BPF_ATTR_DATA_FIELD(BPF_PROG_GET_NEXT_ID);
BPF_ATTR_DATA_FIELD(BPF_PROG_GET_FD_BY_ID);
BPF_ATTR_DATA_FIELD(BPF_MAP_GET_FD_BY_ID);
BPF_ATTR_DATA_FIELD(BPF_OBJ_GET_INFO_BY_FD);
BPF_ATTR_DATA_FIELD(BPF_PROG_QUERY);
BPF_ATTR_DATA_FIELD(BPF_RAW_TRACEPOINT_OPEN);
char char_data[256];
};
struct bpf_attr_check {
union bpf_attr_data data;
size_t size;
const char *str;
void (*init_fn)(struct bpf_attr_check *check);
void (*print_fn)(const struct bpf_attr_check *check,
unsigned long addr);
};
struct bpf_check {
kernel_ulong_t cmd;
const char *cmd_str;
const struct bpf_attr_check *checks;
size_t count;
};
static const kernel_ulong_t long_bits = (kernel_ulong_t) 0xfacefeed00000000ULL;
static const char *errstr;
static unsigned int sizeof_attr = sizeof(union bpf_attr_data);
static unsigned int page_size;
static unsigned long end_of_page;
static long
sys_bpf(kernel_ulong_t cmd, kernel_ulong_t attr, kernel_ulong_t size)
{
long rc = syscall(__NR_bpf, cmd, attr, size);
errstr = sprintrc(rc);
#ifdef INJECT_RETVAL
if (rc != INJECT_RETVAL)
error_msg_and_fail("Got a return value of %ld != %d",
rc, INJECT_RETVAL);
static char inj_errstr[4096];
snprintf(inj_errstr, sizeof(inj_errstr), "%s (INJECTED)", errstr);
errstr = inj_errstr;
#endif
return rc;
}
#if VERBOSE
# define print_extra_data(addr_, offs_, size_) \
do { \
printf("/* bytes %u..%u */ ", (offs_), (size_) + (offs_) - 1); \
print_quoted_hex((addr_) + (offs_), (size_)); \
} while (0)
#else
# define print_extra_data(addr_, offs_, size_) printf("...")
#endif
static void
print_bpf_attr(const struct bpf_attr_check *check, unsigned long addr)
{
if (check->print_fn)
check->print_fn(check, addr);
else
printf("%s", check->str);
}
static void
test_bpf(const struct bpf_check *cmd_check)
{
const struct bpf_attr_check *check = 0;
const union bpf_attr_data *data = 0;
unsigned int offset = 0;
/* zero addr */
sys_bpf(cmd_check->cmd, 0, long_bits | sizeof(union bpf_attr_data));
printf("bpf(%s, NULL, %u) = %s\n",
cmd_check->cmd_str, sizeof_attr, errstr);
/* zero size */
unsigned long addr = end_of_page - sizeof_attr;
sys_bpf(cmd_check->cmd, addr, long_bits);
printf("bpf(%s, %#lx, 0) = %s\n",
cmd_check->cmd_str, addr, errstr);
for (size_t i = 0; i < cmd_check->count; i++) {
check = &cmd_check->checks[i];
if (check->init_fn)
check->init_fn((struct bpf_attr_check *) check);
data = &check->data;
offset = check->size;
addr = end_of_page - offset;
memcpy((void *) addr, data, offset);
/* starting piece of bpf_attr_data */
sys_bpf(cmd_check->cmd, addr, offset);
printf("bpf(%s, {", cmd_check->cmd_str);
print_bpf_attr(check, addr);
printf("}, %u) = %s\n", offset, errstr);
/* short read of the starting piece */
sys_bpf(cmd_check->cmd, addr + 1, offset);
printf("bpf(%s, %#lx, %u) = %s\n",
cmd_check->cmd_str, addr + 1, offset, errstr);
}
if (offset < sizeof_attr) {
/* short read of the whole bpf_attr_data */
memcpy((void *) end_of_page - sizeof_attr + 1, data, offset);
addr = end_of_page - sizeof_attr + 1;
memset((void *) addr + offset, 0, sizeof_attr - offset - 1);
sys_bpf(cmd_check->cmd, addr, sizeof_attr);
printf("bpf(%s, %#lx, %u) = %s\n",
cmd_check->cmd_str, addr, sizeof_attr, errstr);
/* the whole bpf_attr_data */
memcpy((void *) end_of_page - sizeof_attr, data, offset);
addr = end_of_page - sizeof_attr;
memset((void *) addr + offset, 0, sizeof_attr - offset);
sys_bpf(cmd_check->cmd, addr, sizeof_attr);
printf("bpf(%s, {", cmd_check->cmd_str);
print_bpf_attr(check, addr);
printf("}, %u) = %s\n", sizeof_attr, errstr);
/* non-zero bytes after the relevant part */
fill_memory_ex((void *) addr + offset,
sizeof_attr - offset, '0', 10);
sys_bpf(cmd_check->cmd, addr, sizeof_attr);
printf("bpf(%s, {", cmd_check->cmd_str);
print_bpf_attr(check, addr);
printf(", ");
print_extra_data((char *) addr, offset,
sizeof_attr - offset);
printf("}, %u) = %s\n", sizeof_attr, errstr);
}
/* short read of the whole page */
memcpy((void *) end_of_page - page_size + 1, data, offset);
addr = end_of_page - page_size + 1;
memset((void *) addr + offset, 0, page_size - offset - 1);
sys_bpf(cmd_check->cmd, addr, page_size);
printf("bpf(%s, %#lx, %u) = %s\n",
cmd_check->cmd_str, addr, page_size, errstr);
/* the whole page */
memcpy((void *) end_of_page - page_size, data, offset);
addr = end_of_page - page_size;
memset((void *) addr + offset, 0, page_size - offset);
sys_bpf(cmd_check->cmd, addr, page_size);
printf("bpf(%s, {", cmd_check->cmd_str);
print_bpf_attr(check, addr);
printf("}, %u) = %s\n", page_size, errstr);
/* non-zero bytes after the whole bpf_attr_data */
fill_memory_ex((void *) addr + offset,
page_size - offset, '0', 10);
sys_bpf(cmd_check->cmd, addr, page_size);
printf("bpf(%s, {", cmd_check->cmd_str);
print_bpf_attr(check, addr);
printf(", ");
print_extra_data((char *) addr, offset,
page_size - offset);
printf("}, %u) = %s\n", page_size, errstr);
/* more than a page */
sys_bpf(cmd_check->cmd, addr, page_size + 1);
printf("bpf(%s, %#lx, %u) = %s\n",
cmd_check->cmd_str, addr, page_size + 1, errstr);
}
static void
init_BPF_MAP_CREATE_attr7(struct bpf_attr_check *check)
{
struct BPF_MAP_CREATE_struct *attr = &check->data.BPF_MAP_CREATE_data;
attr->map_ifindex = ifindex_lo();
}
static struct bpf_attr_check BPF_MAP_CREATE_checks[] = {
{
.data = { .BPF_MAP_CREATE_data = { .map_type = 2 } },
.size = offsetofend(struct BPF_MAP_CREATE_struct, map_type),
.str = "map_type=BPF_MAP_TYPE_ARRAY, key_size=0, value_size=0"
", max_entries=0"
},
{ /* 1 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 20,
.key_size = 4,
.value_size = 8,
.max_entries = 256,
.map_flags = 63,
.inner_map_fd = -1,
.numa_node = 3141592653,
.map_name = "0123456789abcde",
} },
.size = offsetof(struct BPF_MAP_CREATE_struct, map_name) + 8,
.str = "map_type=BPF_MAP_TYPE_REUSEPORT_SOCKARRAY, key_size=4"
", value_size=8, max_entries=256"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NO_COMMON_LRU"
"|BPF_F_NUMA_NODE|BPF_F_RDONLY|BPF_F_WRONLY"
"|BPF_F_STACK_BUILD_ID"
", inner_map_fd=-1"
", numa_node=3141592653"
", map_name=\"0123456\"...",
},
{ /* 2 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 21,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xffffffc0,
.inner_map_fd = 2718281828,
.numa_node = -1,
.map_name = "",
.map_ifindex = 3141592653,
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, map_ifindex),
.str = "map_type=0x15 /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=0xffffffc0 /* BPF_F_??? */"
", inner_map_fd=-1576685468"
", map_name=\"\", map_ifindex=3141592653",
},
{ /* 3 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 0xdeadf00d,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xc0dedead,
.inner_map_fd = 2718281828,
.numa_node = -1,
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, map_flags),
.str = "map_type=0xdeadf00d /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NUMA_NODE"
"|BPF_F_RDONLY|BPF_F_STACK_BUILD_ID"
"|0xc0dede80",
},
{ /* 4 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 0xdeadf00d,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xc0dedead,
.inner_map_fd = 2718281828,
.numa_node = -1,
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, inner_map_fd),
.str = "map_type=0xdeadf00d /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NUMA_NODE"
"|BPF_F_RDONLY|BPF_F_STACK_BUILD_ID"
"|0xc0dede80"
", inner_map_fd=-1576685468",
},
{ /* 5 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 0xdeadf00d,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xc0dedead,
.inner_map_fd = 2718281828,
.numa_node = -1,
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, numa_node),
.str = "map_type=0xdeadf00d /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NUMA_NODE"
"|BPF_F_RDONLY|BPF_F_STACK_BUILD_ID"
"|0xc0dede80"
", inner_map_fd=-1576685468"
", numa_node=4294967295 /* NUMA_NO_NODE */",
},
{ /* 6 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 0xdeadf00d,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xc0dedead,
.inner_map_fd = 2718281828,
.numa_node = -1,
.map_name = "fedcba9876543210",
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, map_name),
.str = "map_type=0xdeadf00d /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NUMA_NODE"
"|BPF_F_RDONLY|BPF_F_STACK_BUILD_ID"
"|0xc0dede80"
", inner_map_fd=-1576685468"
", numa_node=4294967295 /* NUMA_NO_NODE */"
", map_name=\"fedcba987654321\"...",
},
{ /* 7 */
.data = { .BPF_MAP_CREATE_data = {
.map_type = 0xdeadf00d,
.key_size = 0xface1e55,
.value_size = 0xbadc0ded,
.max_entries = 0xbeefcafe,
.map_flags = 0xc0dedead,
.inner_map_fd = 2718281828,
.numa_node = -1,
.map_name = "0123456789abcde",
} },
.size = offsetofend(struct BPF_MAP_CREATE_struct, map_ifindex),
.str = "map_type=0xdeadf00d /* BPF_MAP_TYPE_??? */"
", key_size=4207812181, value_size=3134983661"
", max_entries=3203386110"
", map_flags=BPF_F_NO_PREALLOC|BPF_F_NUMA_NODE"
"|BPF_F_RDONLY|BPF_F_STACK_BUILD_ID"
"|0xc0dede80"
", inner_map_fd=-1576685468"
", numa_node=4294967295 /* NUMA_NO_NODE */"
", map_name=\"0123456789abcde\""
", map_ifindex=" IFINDEX_LO_STR,
.init_fn = init_BPF_MAP_CREATE_attr7,
},
};
static const struct bpf_attr_check BPF_MAP_LOOKUP_ELEM_checks[] = {
{
.data = { .BPF_MAP_LOOKUP_ELEM_data = { .map_fd = -1 } },
.size = offsetofend(struct BPF_MAP_LOOKUP_ELEM_struct, map_fd),
.str = "map_fd=-1, key=NULL, value=NULL"
},
{
.data = { .BPF_MAP_LOOKUP_ELEM_data = {
.map_fd = -1,
.key = 0xdeadbeef,
.value = 0xbadc0ded
} },
.size = offsetofend(struct BPF_MAP_LOOKUP_ELEM_struct, value),
.str = "map_fd=-1, key=0xdeadbeef, value=0xbadc0ded"
}
};
static const struct bpf_attr_check BPF_MAP_UPDATE_ELEM_checks[] = {
{
.data = { .BPF_MAP_UPDATE_ELEM_data = { .map_fd = -1 } },
.size = offsetofend(struct BPF_MAP_UPDATE_ELEM_struct, map_fd),
.str = "map_fd=-1, key=NULL, value=NULL, flags=BPF_ANY"
},
{
.data = { .BPF_MAP_UPDATE_ELEM_data = {
.map_fd = -1,
.key = 0xdeadbeef,
.value = 0xbadc0ded,
.flags = 2
} },
.size = offsetofend(struct BPF_MAP_UPDATE_ELEM_struct, flags),
.str = "map_fd=-1, key=0xdeadbeef, value=0xbadc0ded"
", flags=BPF_EXIST"
}
};
static const struct bpf_attr_check BPF_MAP_DELETE_ELEM_checks[] = {
{
.data = { .BPF_MAP_DELETE_ELEM_data = { .map_fd = -1 } },
.size = offsetofend(struct BPF_MAP_DELETE_ELEM_struct, map_fd),
.str = "map_fd=-1, key=NULL"
},
{
.data = { .BPF_MAP_DELETE_ELEM_data = {
.map_fd = -1,
.key = 0xdeadbeef
} },
.size = offsetofend(struct BPF_MAP_DELETE_ELEM_struct, key),
.str = "map_fd=-1, key=0xdeadbeef"
}
};
static const struct bpf_attr_check BPF_MAP_GET_NEXT_KEY_checks[] = {
{
.data = { .BPF_MAP_GET_NEXT_KEY_data = { .map_fd = -1 } },
.size = offsetofend(struct BPF_MAP_GET_NEXT_KEY_struct, map_fd),
.str = "map_fd=-1, key=NULL, next_key=NULL"
},
{
.data = { .BPF_MAP_GET_NEXT_KEY_data = {
.map_fd = -1,
.key = 0xdeadbeef,
.next_key = 0xbadc0ded
} },
.size = offsetofend(struct BPF_MAP_GET_NEXT_KEY_struct, next_key),
.str = "map_fd=-1, key=0xdeadbeef, next_key=0xbadc0ded"
}
};
static const struct bpf_insn insns[] = {
{
.code = 0x95,
.dst_reg = 10,
.src_reg = 11,
.off = 0xdead,
.imm = 0xbadc0ded,
},
};
static const char license[] = "GPL";
static const char pathname[] = "/sys/fs/bpf/foo/bar";
static char *log_buf;
/*
* This has to be a macro, otherwise the compiler complains that
* initializer element is not constant.
*/
#define log_buf_size 4096U
static inline char *
get_log_buf(void)
{
if (!log_buf)
log_buf = tail_alloc(log_buf_size);
return log_buf;
}
static inline char *
get_log_buf_tail(void)
{
return get_log_buf() + log_buf_size;
}
#if VERBOSE
# define INSNS_FMT \
"[{code=BPF_JMP|BPF_K|BPF_EXIT, dst_reg=BPF_REG_10" \
", src_reg=0xb /* BPF_REG_??? */, off=%d, imm=%#x}]"
# define INSNS_ARG insns[0].off, insns[0].imm
#else
# define INSNS_FMT "%p"
# define INSNS_ARG insns
#endif
static void
init_BPF_PROG_LOAD_attr3(struct bpf_attr_check *check)
{
struct BPF_PROG_LOAD_struct *attr = &check->data.BPF_PROG_LOAD_data;
attr->insns = (uintptr_t) insns;
attr->license = (uintptr_t) license;
attr->log_buf = (uintptr_t) get_log_buf_tail();
}
static void
print_BPF_PROG_LOAD_attr3(const struct bpf_attr_check *check, unsigned long addr)
{
printf("prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=%u"
", insns=" INSNS_FMT ", license=\"%s\", log_level=2718281828"
", log_size=%u, log_buf=%p"
", kern_version=KERNEL_VERSION(51966, 240, 13)"
", prog_flags=0x2 /* BPF_F_??? */"
", prog_name=\"0123456789abcde\"..., prog_ifindex=3203399405",
(unsigned int) ARRAY_SIZE(insns), INSNS_ARG, license,
log_buf_size, get_log_buf_tail());
}
static void
init_BPF_PROG_LOAD_attr4(struct bpf_attr_check *check)
{
struct BPF_PROG_LOAD_struct *attr = &check->data.BPF_PROG_LOAD_data;
attr->insns = (uintptr_t) insns;
attr->license = (uintptr_t) license;
attr->log_buf = (uintptr_t) get_log_buf();
attr->prog_ifindex = ifindex_lo();
strncpy(log_buf, "log test", 9);
}
static void
print_BPF_PROG_LOAD_attr4(const struct bpf_attr_check *check, unsigned long addr)
{
printf("prog_type=BPF_PROG_TYPE_UNSPEC, insn_cnt=%u, insns=" INSNS_FMT
", license=\"%s\", log_level=2718281828, log_size=4"
", log_buf=\"log \"..."
", kern_version=KERNEL_VERSION(51966, 240, 13)"
", prog_flags=BPF_F_STRICT_ALIGNMENT|0x2"
", prog_name=\"0123456789abcde\"..., prog_ifindex=%s"
", expected_attach_type=BPF_CGROUP_INET6_BIND",
(unsigned int) ARRAY_SIZE(insns), INSNS_ARG,
license, IFINDEX_LO_STR);
}
static struct bpf_attr_check BPF_PROG_LOAD_checks[] = {
{
.data = { .BPF_PROG_LOAD_data = { .prog_type = 1 } },
.size = offsetofend(struct BPF_PROG_LOAD_struct, prog_type),
.str = "prog_type=BPF_PROG_TYPE_SOCKET_FILTER"
", insn_cnt=0, insns=NULL, license=NULL"
},
{ /* 1 */
.data = { .BPF_PROG_LOAD_data = {
.prog_type = 21,
.insn_cnt = 0xbadc0ded,
.insns = 0,
.license = 0,
.log_level = 42,
.log_size = 3141592653U,
.log_buf = 0,
.kern_version = 0xcafef00d,
.prog_flags = 0,
} },
.size = offsetofend(struct BPF_PROG_LOAD_struct, prog_flags),
.str = "prog_type=0x15 /* BPF_PROG_TYPE_??? */"
", insn_cnt=3134983661, insns=NULL, license=NULL"
", log_level=42, log_size=3141592653, log_buf=NULL"
", kern_version=KERNEL_VERSION(51966, 240, 13)"
", prog_flags=0",
},
{ /* 2 */
.data = { .BPF_PROG_LOAD_data = {
.prog_type = 20,
.insn_cnt = 0xbadc0ded,
.insns = 0xffffffff00000000,
.license = 0xffffffff00000000,
.log_level = 2718281828U,
.log_size = log_buf_size,
.log_buf = 0xffffffff00000000,
.kern_version = 0xcafef00d,
.prog_flags = 1,
.prog_name = "fedcba987654321",
} },
.size = offsetofend(struct BPF_PROG_LOAD_struct, prog_name),
.str = "prog_type=BPF_PROG_TYPE_SK_REUSEPORT"
", insn_cnt=3134983661"
", insns=" BIG_ADDR("0xffffffff00000000", "NULL")
", license=" BIG_ADDR("0xffffffff00000000", "NULL")
", log_level=2718281828, log_size=4096"
", log_buf=" BIG_ADDR("0xffffffff00000000", "NULL")
", kern_version=KERNEL_VERSION(51966, 240, 13)"
", prog_flags=BPF_F_STRICT_ALIGNMENT"
", prog_name=\"fedcba987654321\"",
},
{ /* 3 */
.data = { .BPF_PROG_LOAD_data = {
.prog_type = 1,
.insn_cnt = ARRAY_SIZE(insns),
.log_level = 2718281828U,
.log_size = log_buf_size,
.kern_version = 0xcafef00d,
.prog_flags = 2,
.prog_name = "0123456789abcdef",
.prog_ifindex = 0xbeeffeed,
} },
.size = offsetofend(struct BPF_PROG_LOAD_struct, prog_ifindex),
.init_fn = init_BPF_PROG_LOAD_attr3,
.print_fn = print_BPF_PROG_LOAD_attr3
},
{ /* 4 */
.data = { .BPF_PROG_LOAD_data = {
.prog_type = 0,
.insn_cnt = ARRAY_SIZE(insns),
.log_level = 2718281828U,
.log_size = 4,
.kern_version = 0xcafef00d,
.prog_flags = 3,
.prog_name = "0123456789abcdef",
.expected_attach_type = 9,
} },
.size = offsetofend(struct BPF_PROG_LOAD_struct,
expected_attach_type),
.init_fn = init_BPF_PROG_LOAD_attr4,
.print_fn = print_BPF_PROG_LOAD_attr4
},
};
static void
init_BPF_OBJ_PIN_attr(struct bpf_attr_check *check)
{
struct BPF_OBJ_PIN_struct *attr = &check->data.BPF_OBJ_PIN_data;
attr->pathname = (uintptr_t) pathname;
}
static struct bpf_attr_check BPF_OBJ_PIN_checks[] = {
{
.data = { .BPF_OBJ_PIN_data = { .pathname = 0 } },
.size = offsetofend(struct BPF_OBJ_PIN_struct, pathname),
.str = "pathname=NULL, bpf_fd=0"
},
{
.data = { .BPF_OBJ_PIN_data = {
.pathname = 0xFFFFFFFFFFFFFFFFULL
} },
.size = offsetofend(struct BPF_OBJ_PIN_struct, pathname),
.str = "pathname=" BIG_ADDR("0xffffffffffffffff", "0xffffffff")
", bpf_fd=0",
},
{
.data = { .BPF_OBJ_PIN_data = { .bpf_fd = -1 } },
.size = offsetofend(struct BPF_OBJ_PIN_struct, bpf_fd),
.init_fn = init_BPF_OBJ_PIN_attr,
.str = "pathname=\"/sys/fs/bpf/foo/bar\", bpf_fd=-1"
},
{
.data = { .BPF_OBJ_PIN_data = {
.bpf_fd = -1,
.file_flags = 0x18
} },
.size = offsetofend(struct BPF_OBJ_PIN_struct, file_flags),
.init_fn = init_BPF_OBJ_PIN_attr,
.str = "pathname=\"/sys/fs/bpf/foo/bar\", bpf_fd=-1"
", file_flags=BPF_F_RDONLY|BPF_F_WRONLY"
}
};
#define BPF_OBJ_GET_checks BPF_OBJ_PIN_checks
static const struct bpf_attr_check BPF_PROG_ATTACH_checks[] = {
{
.data = { .BPF_PROG_ATTACH_data = { .target_fd = -1 } },
.size = offsetofend(struct BPF_PROG_ATTACH_struct, target_fd),
.str = "target_fd=-1, attach_bpf_fd=0"
", attach_type=BPF_CGROUP_INET_INGRESS, attach_flags=0"
},
{
.data = { .BPF_PROG_ATTACH_data = {
.target_fd = -1,
.attach_bpf_fd = -2,
.attach_type = 2,
.attach_flags = 1
} },
.size = offsetofend(struct BPF_PROG_ATTACH_struct, attach_flags),
.str = "target_fd=-1, attach_bpf_fd=-2"
", attach_type=BPF_CGROUP_INET_SOCK_CREATE"
", attach_flags=BPF_F_ALLOW_OVERRIDE"
}
};
static const struct bpf_attr_check BPF_PROG_DETACH_checks[] = {
{
.data = { .BPF_PROG_DETACH_data = { .target_fd = -1 } },
.size = offsetofend(struct BPF_PROG_DETACH_struct, target_fd),
.str = "target_fd=-1, attach_type=BPF_CGROUP_INET_INGRESS"
},
{
.data = { .BPF_PROG_DETACH_data = {
.target_fd = -1,
.attach_type = 2
} },
.size = offsetofend(struct BPF_PROG_DETACH_struct, attach_type),
.str = "target_fd=-1, attach_type=BPF_CGROUP_INET_SOCK_CREATE"
}
};
static const struct bpf_attr_check BPF_PROG_TEST_RUN_checks[] = {
{
.data = { .BPF_PROG_TEST_RUN_data = { .prog_fd = -1 } },
.size = offsetofend(struct BPF_PROG_TEST_RUN_struct, prog_fd),
.str = "test={prog_fd=-1, retval=0, data_size_in=0"
", data_size_out=0, data_in=NULL, data_out=NULL"
", repeat=0, duration=0}"
},
{
.data = { .BPF_PROG_TEST_RUN_data = {
.prog_fd = -1,
.retval = 0xfac1fed2,
.data_size_in = 0xfac3fed4,
.data_size_out = 0xfac5fed6,
.data_in = (uint64_t) 0xfacef11dbadc2dedULL,
.data_out = (uint64_t) 0xfacef33dbadc4dedULL,
.repeat = 0xfac7fed8,
.duration = 0xfac9feda
} },
.size = offsetofend(struct BPF_PROG_TEST_RUN_struct, duration),
.str = "test={prog_fd=-1, retval=4207017682"
", data_size_in=4207148756, data_size_out=4207279830"
", data_in=0xfacef11dbadc2ded"
", data_out=0xfacef33dbadc4ded"
", repeat=4207410904, duration=4207541978}"
}
};
static const struct bpf_attr_check BPF_PROG_GET_NEXT_ID_checks[] = {
{
.data = { .BPF_PROG_GET_NEXT_ID_data = {
.start_id = 0xdeadbeef
} },
.size = offsetofend(struct BPF_PROG_GET_NEXT_ID_struct, start_id),
.str = "start_id=3735928559, next_id=0"
},
{
.data = { .BPF_PROG_GET_NEXT_ID_data = {
.start_id = 0xdeadbeef
} },
.size = 1,
.str = "start_id="
#if WORDS_BIGENDIAN
"3724541952" /* 0xde000000 */
#else
"239" /* 0x000000ef */
#endif
", next_id=0"
},
{
.data = { .BPF_PROG_GET_NEXT_ID_data = {
.start_id = 0xbadc0ded,
.next_id = 0xcafef00d
} },
.size = offsetofend(struct BPF_PROG_GET_NEXT_ID_struct, next_id),
.str = "start_id=3134983661, next_id=3405705229"
},
{
.data = { .BPF_PROG_GET_NEXT_ID_data = {
.start_id = 0xbadc0ded,
.next_id = 0xcafef00d,
.open_flags = 0xffffff27
} },
.size = offsetofend(struct BPF_PROG_GET_NEXT_ID_struct, open_flags),
.str = "start_id=3134983661, next_id=3405705229"
", open_flags=0xffffff27 /* BPF_F_??? */"
}
};
#define BPF_MAP_GET_NEXT_ID_checks BPF_PROG_GET_NEXT_ID_checks
static const struct bpf_attr_check BPF_PROG_GET_FD_BY_ID_checks[] = {
{
.data = { .BPF_PROG_GET_FD_BY_ID_data = {
.prog_id = 0xdeadbeef
} },
.size = offsetofend(struct BPF_PROG_GET_FD_BY_ID_struct, prog_id),
.str = "prog_id=3735928559, next_id=0"
},
{
.data = { .BPF_PROG_GET_FD_BY_ID_data = {
.prog_id = 0xbadc0ded,
.next_id = 0xcafef00d
} },
.size = offsetofend(struct BPF_PROG_GET_FD_BY_ID_struct, next_id),
.str = "prog_id=3134983661, next_id=3405705229"
},
{
.data = { .BPF_PROG_GET_FD_BY_ID_data = {
.prog_id = 0xbadc0ded,
.next_id = 0xcafef00d,
.open_flags = 0xffffff27
} },
.size = offsetofend(struct BPF_PROG_GET_FD_BY_ID_struct, open_flags),
.str = "prog_id=3134983661, next_id=3405705229"
", open_flags=0xffffff27 /* BPF_F_??? */"
}
};
static const struct bpf_attr_check BPF_MAP_GET_FD_BY_ID_checks[] = {
{
.data = { .BPF_MAP_GET_FD_BY_ID_data = {
.map_id = 0xdeadbeef
} },
.size = offsetofend(struct BPF_MAP_GET_FD_BY_ID_struct, map_id),
.str = "map_id=3735928559, next_id=0"
},
{
.data = { .BPF_MAP_GET_FD_BY_ID_data = {
.map_id = 0xbadc0ded,
.next_id = 0xcafef00d
} },
.size = offsetofend(struct BPF_MAP_GET_FD_BY_ID_struct, next_id),
.str = "map_id=3134983661, next_id=3405705229"
},
{
.data = { .BPF_MAP_GET_FD_BY_ID_data = {
.map_id = 0xbadc0ded,
.next_id = 0xcafef00d,
.open_flags = 0xffffff27
} },
.size = offsetofend(struct BPF_MAP_GET_FD_BY_ID_struct, open_flags),
.str = "map_id=3134983661, next_id=3405705229"
", open_flags=0xffffff27 /* BPF_F_??? */"
}
};
static const struct bpf_attr_check BPF_OBJ_GET_INFO_BY_FD_checks[] = {
{
.data = { .BPF_OBJ_GET_INFO_BY_FD_data = { .bpf_fd = -1 } },
.size = offsetofend(struct BPF_OBJ_GET_INFO_BY_FD_struct, bpf_fd),
.str = "info={bpf_fd=-1, info_len=0, info=NULL}"
},
{
.data = { .BPF_OBJ_GET_INFO_BY_FD_data = {
.bpf_fd = -1,
.info_len = 0xdeadbeef,
.info = (uint64_t) 0xfacefeedbadc0dedULL
} },
.size = offsetofend(struct BPF_OBJ_GET_INFO_BY_FD_struct, info),
.str = "info={bpf_fd=-1, info_len=3735928559"
", info=0xfacefeedbadc0ded}"
}
};
static uint32_t prog_load_ids[] = { 0, 1, 0xffffffff, 2718281828, };
uint32_t *prog_load_ids_ptr;
static void
init_BPF_PROG_QUERY_attr4(struct bpf_attr_check *check)
{
struct BPF_PROG_QUERY_struct *attr = &check->data.BPF_PROG_QUERY_data;
if (!prog_load_ids_ptr)
prog_load_ids_ptr = tail_memdup(prog_load_ids,
sizeof(prog_load_ids));
attr->prog_ids = (uintptr_t) prog_load_ids_ptr;
attr->prog_cnt = ARRAY_SIZE(prog_load_ids);
}
static void
print_BPF_PROG_QUERY_attr4(const struct bpf_attr_check *check, unsigned long addr)
{
printf("query={target_fd=-1153374643"
", attach_type=0xfeedface /* BPF_??? */"
", query_flags=BPF_F_QUERY_EFFECTIVE|0xdeadf00c"
", attach_flags=BPF_F_ALLOW_MULTI|0xbeefcafc"
#if defined(INJECT_RETVAL) && INJECT_RETVAL > 0
", prog_ids=[0, 1, 4294967295, 2718281828], prog_cnt=4}"
#else
", prog_ids=%p, prog_cnt=4}", prog_load_ids_ptr
#endif
);
}
static void
init_BPF_PROG_QUERY_attr5(struct bpf_attr_check *check)
{
struct BPF_PROG_QUERY_struct *attr = &check->data.BPF_PROG_QUERY_data;
if (!prog_load_ids_ptr)
prog_load_ids_ptr = tail_memdup(prog_load_ids,
sizeof(prog_load_ids));
attr->prog_ids = (uintptr_t) prog_load_ids_ptr;
attr->prog_cnt = ARRAY_SIZE(prog_load_ids) + 1;
}
static void
print_BPF_PROG_QUERY_attr5(const struct bpf_attr_check *check, unsigned long addr)
{
printf("query={target_fd=-1153374643"
", attach_type=0xfeedface /* BPF_??? */"
", query_flags=BPF_F_QUERY_EFFECTIVE|0xdeadf00c"
", attach_flags=BPF_F_ALLOW_MULTI|0xbeefcafc"
#if defined(INJECT_RETVAL) && INJECT_RETVAL > 0
", prog_ids=[0, 1, 4294967295, 2718281828, ... /* %p */]"
", prog_cnt=5}",
prog_load_ids_ptr + ARRAY_SIZE(prog_load_ids)
#else
", prog_ids=%p, prog_cnt=5}", prog_load_ids_ptr
#endif
);
}
static struct bpf_attr_check BPF_PROG_QUERY_checks[] = {
{
.data = { .BPF_PROG_QUERY_data = { .target_fd = -1 } },
.size = offsetofend(struct BPF_PROG_QUERY_struct, target_fd),
.str = "query={target_fd=-1"
", attach_type=BPF_CGROUP_INET_INGRESS, query_flags=0"
", attach_flags=0, prog_ids=NULL, prog_cnt=0}",
},
{ /* 1 */
.data = { .BPF_PROG_QUERY_data = {
.target_fd = 3141592653U,
.attach_type = 16,
.query_flags = 1,
.attach_flags = 3,
} },
.size = offsetofend(struct BPF_PROG_QUERY_struct, attach_flags),
.str = "query={target_fd=-1153374643"
", attach_type=BPF_LIRC_MODE2"
", query_flags=BPF_F_QUERY_EFFECTIVE"
", attach_flags=BPF_F_ALLOW_OVERRIDE|BPF_F_ALLOW_MULTI"
", prog_ids=NULL, prog_cnt=0}",
},
{ /* 2 */
.data = { .BPF_PROG_QUERY_data = {
.target_fd = 3141592653U,
.attach_type = 17,
.query_flags = 0xfffffffe,
.attach_flags = 0xfffffffc,
.prog_ids = 0xffffffffffffffffULL,
.prog_cnt = 2718281828,
} },
.size = offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt),
.str = "query={target_fd=-1153374643"
", attach_type=0x11 /* BPF_??? */"
", query_flags=0xfffffffe /* BPF_F_QUERY_??? */"
", attach_flags=0xfffffffc /* BPF_F_??? */"
", prog_ids="
BIG_ADDR("0xffffffffffffffff", "0xffffffff")
", prog_cnt=2718281828}",
},
{ /* 3 */
.data = { .BPF_PROG_QUERY_data = {
.target_fd = 3141592653U,
.attach_type = 0xfeedface,
.query_flags = 0xdeadf00d,
.attach_flags = 0xbeefcafe,
.prog_ids = 0xffffffffffffffffULL,
.prog_cnt = 0,
} },
.size = offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt),
.str = "query={target_fd=-1153374643"
", attach_type=0xfeedface /* BPF_??? */"
", query_flags=BPF_F_QUERY_EFFECTIVE|0xdeadf00c"
", attach_flags=BPF_F_ALLOW_MULTI|0xbeefcafc"
", prog_ids=" BIG_ADDR_MAYBE("0xffffffffffffffff") "[]"
", prog_cnt=0}",
},
{ /* 4 */
.data = { .BPF_PROG_QUERY_data = {
.target_fd = 3141592653U,
.attach_type = 0xfeedface,
.query_flags = 0xdeadf00d,
.attach_flags = 0xbeefcafe,
} },
.size = offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt),
.init_fn = init_BPF_PROG_QUERY_attr4,
.print_fn = print_BPF_PROG_QUERY_attr4,
},
{ /* 5 */
.data = { .BPF_PROG_QUERY_data = {
.target_fd = 3141592653U,
.attach_type = 0xfeedface,
.query_flags = 0xdeadf00d,
.attach_flags = 0xbeefcafe,
} },
.size = offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt),
.init_fn = init_BPF_PROG_QUERY_attr5,
.print_fn = print_BPF_PROG_QUERY_attr5,
},
};
static void
init_BPF_RAW_TRACEPOINT_attr2(struct bpf_attr_check *check)
{
/* TODO: test the 128 byte limit */
static const char tp_name[] = "0123456789qwertyuiop0123456789qwe";
struct BPF_RAW_TRACEPOINT_OPEN_struct *attr =
&check->data.BPF_RAW_TRACEPOINT_OPEN_data;
attr->name = (uintptr_t) tp_name;
}
static struct bpf_attr_check BPF_RAW_TRACEPOINT_OPEN_checks[] = {
{
.data = { .BPF_RAW_TRACEPOINT_OPEN_data = { .name = 0 } },
.size = offsetofend(struct BPF_RAW_TRACEPOINT_OPEN_struct,
name),
.str = "raw_tracepoint={name=NULL, prog_fd=0}",
},
{ /* 1 */
.data = { .BPF_RAW_TRACEPOINT_OPEN_data = {
.name = 0xffffffff00000000ULL,
.prog_fd = 0xdeadbeef,
} },
.size = offsetofend(struct BPF_RAW_TRACEPOINT_OPEN_struct,
prog_fd),
.str = "raw_tracepoint="
"{name=" BIG_ADDR("0xffffffff00000000", "NULL")
", prog_fd=-559038737}",
},
{
.data = { .BPF_RAW_TRACEPOINT_OPEN_data = {
.prog_fd = 0xdeadbeef,
} },
.size = offsetofend(struct BPF_RAW_TRACEPOINT_OPEN_struct,
prog_fd),
.init_fn = init_BPF_RAW_TRACEPOINT_attr2,
.str = "raw_tracepoint="
"{name=\"0123456789qwertyuiop0123456789qw\"..."
", prog_fd=-559038737}",
}
};
#define CHK(cmd_) \
{ \
cmd_, #cmd_, \
cmd_##_checks, ARRAY_SIZE(cmd_##_checks), \
} \
/* End of CHK definition */
int
main(void)
{
static const struct bpf_check checks[] = {
CHK(BPF_MAP_CREATE),
CHK(BPF_MAP_LOOKUP_ELEM),
CHK(BPF_MAP_UPDATE_ELEM),
CHK(BPF_MAP_DELETE_ELEM),
CHK(BPF_MAP_GET_NEXT_KEY),
CHK(BPF_PROG_LOAD),
CHK(BPF_OBJ_PIN),
CHK(BPF_OBJ_GET),
CHK(BPF_PROG_ATTACH),
CHK(BPF_PROG_DETACH),
CHK(BPF_PROG_TEST_RUN),
CHK(BPF_PROG_GET_NEXT_ID),
CHK(BPF_MAP_GET_NEXT_ID),
CHK(BPF_PROG_GET_FD_BY_ID),
CHK(BPF_MAP_GET_FD_BY_ID),
CHK(BPF_OBJ_GET_INFO_BY_FD),
CHK(BPF_PROG_QUERY),
CHK(BPF_RAW_TRACEPOINT_OPEN),
};
page_size = get_page_size();
end_of_page = (unsigned long) tail_alloc(1) + 1;
for (size_t i = 0; i < ARRAY_SIZE(checks); i++)
test_bpf(checks + i);
sys_bpf(0xfacefeed, 0, (kernel_ulong_t) 0xfacefeedbadc0dedULL);
printf("bpf(0xfacefeed /* BPF_??? */, NULL, %u) = %s\n",
0xbadc0dedu, errstr);
sys_bpf(0xfacefeed, end_of_page, 40);
printf("bpf(0xfacefeed /* BPF_??? */, %#lx, 40) = %s\n",
end_of_page, errstr);
puts("+++ exited with 0 +++");
return 0;
}