brintos

brintos / linux-shallow public Read only

0
0
Text · 1.2 KiB · 94323c3 Raw
66 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2 3#include <errno.h>4#include <fcntl.h>5#include <signal.h>6#include <stdio.h>7#include <string.h>8#include <sys/ioctl.h>9#include <sys/mman.h>10#include <sys/stat.h>11#include <sys/types.h>12#include <unistd.h>13 14#include "vas-api.h"15#include "utils.h"16 17static bool faulted;18 19static void sigbus_handler(int n, siginfo_t *info, void *ctxt_v)20{21	ucontext_t *ctxt = (ucontext_t *)ctxt_v;22	struct pt_regs *regs = ctxt->uc_mcontext.regs;23 24	faulted = true;25	regs->nip += 4;26}27 28static int test_ra_error(void)29{30	struct vas_tx_win_open_attr attr;31	int fd, *paste_addr;32	char *devname = "/dev/crypto/nx-gzip";33	struct sigaction act = {34		.sa_sigaction = sigbus_handler,35		.sa_flags = SA_SIGINFO,36	};37 38	memset(&attr, 0, sizeof(attr));39	attr.version = 1;40	attr.vas_id = 0;41 42	SKIP_IF(access(devname, F_OK));43 44	fd = open(devname, O_RDWR);45	FAIL_IF(fd < 0);46	FAIL_IF(ioctl(fd, VAS_TX_WIN_OPEN, &attr) < 0);47	FAIL_IF(sigaction(SIGBUS, &act, NULL) != 0);48 49	paste_addr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0ULL);50 51	/* The following assignment triggers exception */52	mb();53	*paste_addr = 1;54	mb();55 56	FAIL_IF(!faulted);57 58	return 0;59}60 61int main(void)62{63	return test_harness(test_ra_error, "inject-ra-err");64}65 66