ssize_t file_pwrite(file_t* f, const void* buf, size_t size, off_t offset)
{
populate_mapping(buf, size, PROT_READ);
long flags = spinlock_lock_irqsave(&file_lock);
f_lseek(&f->fd, offset);
uint32_t wsize = 0;
f_write(&f->fd, buf, size, &wsize);
spinlock_unlock_irqrestore(&file_lock,flags);
return wsize;
}
long sys_time(void* loc)
{
uintptr_t t = rdcycle() / CLOCK_FREQ;
if (loc)
{
populate_mapping(loc, long_bytes, PROT_WRITE);
put_long(loc, 0, t);
}
return t;
}
int sys_rt_sigaction(int sig, const void* act, void* oact, size_t sssz)
{
if (oact)
{
size_t sz = long_bytes * 3;
populate_mapping(oact, sz, PROT_WRITE);
memset(oact, 0, sz);
}
return 0;
}
ssize_t file_read(file_t* f, void* buf, size_t size)
{
populate_mapping(buf, size, PROT_WRITE);
long flags = spinlock_lock_irqsave(&file_lock);
f_lseek(&f->fd, f->offset);
uint32_t rsize;
f_read(&f->fd, buf, size, &rsize);
f->offset += rsize;
spinlock_unlock_irqrestore(&file_lock,flags);
return rsize;
}
ssize_t file_pread(file_t* f, void* buf, size_t size, off_t offset)
{
populate_mapping(buf, size, PROT_WRITE);
long flags = spinlock_lock_irqsave(&file_lock);
FRESULT rt = f_lseek(&f->fd, offset);
if(rt) panic("f_lseek() failed! %d", rt);
uint32_t rsize = 0;
f_read(&f->fd, buf, size, &rsize);
if(rt) panic("f_read() failed! %d", rt);
spinlock_unlock_irqrestore(&file_lock,flags);
return rsize;
}
long sys_fstatat(int dirfd, const char* name, void* st, int flags)
{
if(name[0] == '/'){
return sys_stat(name, st);
}
file_t* dir = file_get(dirfd);
if(dir)
{
size_t name_size = strlen(name)+1;
populate_mapping(st, sizeof(struct stat), PROT_WRITE);
return frontend_syscall(SYS_fstatat, dir->kfd, (uintptr_t)name, name_size, (uintptr_t)st, flags);
}
return -EBADF;
}
long sys_getcwd(const char* buf, size_t size)
{
populate_mapping(buf, size, PROT_WRITE);
return frontend_syscall(SYS_getcwd, (uintptr_t)buf, size, 0, 0, 0, 0, 0);
}
long sys_lstat(const char* name, void* st)
{
size_t name_size = strlen(name)+1;
populate_mapping(st, sizeof(struct stat), PROT_WRITE);
return frontend_syscall(SYS_lstat, (uintptr_t)name, name_size, (uintptr_t)st, 0, 0);
}
