void check_linuxswap(exec_options *eo, file_state *fs, off_t offset) {
offset -= 7*512; // TODO: 4k block specific
uint8_t uuid[16];
FS_READ(fs, uuid, offset+0x40C, 16);
uint32_t page_count = read_le_uint32(fs, offset+0x404);
page_count += 1;
off_t fs_size = page_count * 4096; // TODO: 4k block specific
switch ( eo->part_format_type ) {
default:
printf("linux swap v1 at offset %s\n", format_offset(eo, offset));
printf(" filesystem size %llu 512-blocks = %llu bytes ~= %s\n",
(long long unsigned int) fs_size/512,
(long long unsigned int) fs_size,
format_humansize(eo, fs_size));
printf(" uuid %s\n", format_uuid(eo, uuid));
if ( eo->verbose )
printf(" page count %lu\n", (long unsigned) page_count);
printf("\n");
}
if ( !fs->skip_active ) {
fs->skip_active = true;
fs->skip_to = offset+fs_size;
}
}
oread(int fd, void *dest, size_t bcount)
#endif
{
struct open_file *f = &files[fd];
size_t resid;
#if !defined(LIBSA_NO_FD_CHECKING)
if ((unsigned int)fd >= SOPEN_MAX || !(f->f_flags & F_READ)) {
errno = EBADF;
return -1;
}
#endif
#if !defined(LIBSA_NO_RAW_ACCESS)
if (f->f_flags & F_RAW) {
#if !defined(LIBSA_NO_TWIDDLE)
twiddle();
#endif
errno = DEV_STRATEGY(f->f_dev)(f->f_devdata, F_READ,
btodb(f->f_offset), bcount, dest, &resid);
if (errno)
return -1;
f->f_offset += resid;
return resid;
}
#endif
resid = bcount;
if ((errno = FS_READ(f->f_ops)(f, dest, bcount, &resid)))
return -1;
return (ssize_t)(bcount - resid);
}
