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/*
* SYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, size_t, count)
*/
#include <stdlib.h>
#include "arch.h" // page_size
#include "maps.h"
#include "random.h"
#include "sanitise.h"
#include "shm.h"
#include "syscall.h"
#include "trinity.h"
#include "utils.h"
#include "compat.h"
static void sanitise_write(struct syscallrecord *rec)
{
unsigned int size;
void *ptr;
if (RAND_BOOL())
size = 1;
else
size = rnd() % page_size;
ptr = malloc(size);
if (ptr == NULL)
return;
generate_rand_bytes(ptr, size);
rec->a2 = (unsigned long) ptr;
rec->a3 = size;
}
static void post_write(struct syscallrecord *rec)
{
freeptr(&rec->a2);
}
struct syscallentry syscall_write = {
.name = "write",
.num_args = 3,
.arg1name = "fd",
.arg1type = ARG_FD,
.arg2name = "buf",
.arg2type = ARG_NON_NULL_ADDRESS,
.arg3name = "count",
.arg3type = ARG_LEN,
.flags = NEED_ALARM,
.sanitise = sanitise_write,
.post = post_write,
};
/*
* SYSCALL_DEFINE3(writev, unsigned long, fd, const struct iovec __user *, vec, unsigned long, vlen)
*/
struct syscallentry syscall_writev = {
.name = "writev",
.num_args = 3,
.arg1name = "fd",
.arg1type = ARG_FD,
.arg2name = "vec",
.arg2type = ARG_IOVEC,
.arg3name = "vlen",
.arg3type = ARG_IOVECLEN,
.flags = NEED_ALARM,
};
/*
* SYSCALL_DEFINE(pwrite64)(unsigned int fd, const char __user *buf, size_t count, loff_t po>
*/
static void sanitise_pwrite64(struct syscallrecord *rec)
{
sanitise_write(rec);
retry_pos:
if ((int) rec->a4 < 0) {
rec->a4 = rand64();
goto retry_pos;
}
}
struct syscallentry syscall_pwrite64 = {
.name = "pwrite64",
.num_args = 4,
.arg1name = "fd",
.arg1type = ARG_FD,
.arg2name = "buf",
.arg2type = ARG_ADDRESS,
.arg3name = "count",
.arg3type = ARG_LEN,
.arg4name = "pos",
.flags = NEED_ALARM,
.sanitise = sanitise_pwrite64,
.post = post_write,
};
/*
* SYSCALL_DEFINE5(pwritev, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
*/
struct syscallentry syscall_pwritev = {
.name = "pwritev",
.num_args = 5,
.arg1name = "fd",
.arg1type = ARG_FD,
.arg2name = "vec",
.arg2type = ARG_IOVEC,
.arg3name = "vlen",
.arg3type = ARG_IOVECLEN,
.arg4name = "pos_l",
.arg5name = "pos_h",
.flags = NEED_ALARM,
};
/*
* SYSCALL_DEFINE5(pwritev2, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h,
int, flags)
*/
static unsigned long pwritev2_flags[] = {
RWF_HIPRI, RWF_DSYNC, RWF_SYNC,
};
struct syscallentry syscall_pwritev2 = {
.name = "pwritev2",
.num_args = 6,
.arg1name = "fd",
.arg1type = ARG_FD,
.arg2name = "vec",
.arg2type = ARG_IOVEC,
.arg3name = "vlen",
.arg3type = ARG_IOVECLEN,
.arg4name = "pos_l",
.arg5name = "pos_h",
.arg6name = "flags",
.arg6type = ARG_LIST,
.arg6list = ARGLIST(pwritev2_flags),
.flags = NEED_ALARM,
};
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