//
// DetermineUnitGeometry()
//
// Extract and determine the logical and physical geometry.
//
VOID DetermineUnitGeometry (NPU npU)
{
NPA npA;
NPGEO npGEO;
ULONG MaxSec;
USHORT SecPerCyl;
UCHAR rc;
T('G') T('<')
if ((npU->Flags & (UCBF_NOTPRESENT | UCBF_FORCE)) == UCBF_NOTPRESENT) return;
npA = npU->npA;
// Reconsile the physical geometries.
if (npU->FlagsT & UTBF_IDEGEOMETRYVALID) {
npGEO = &npU->IDEPhysGeom;
} else {
npU->Status = UTS_NOT_PRESENT;
}
npU->PhysGeom = *npGEO;
if ((npU->Flags & (UCBF_NOTPRESENT | UCBF_ATAPIDEVICE)) == 0) {
// Get the BIOS Parameter Block Logical geometry for this drive.
if (!BPBGeometryGet (npU)) {
if (npU->Flags & UCBF_ONTRACK)
npU->PhysGeom.TotalSectors -= ONTRACK_SECTOR_OFFSET;
if (npU->BPBLogGeom.NumHeads * npU->BPBLogGeom.SectorsPerTrack)
npU->FlagsT |= UTBF_BPBGEOMETRYVALID;
}
// Get the BIOS reported and Logical geometry (only if BPB geom failed!)
if (InitActive && !Int13GeometryGet (npU))
if (npU->I13LogGeom.NumHeads * npU->I13LogGeom.SectorsPerTrack)
npU->FlagsT |= UTBF_I13GEOMETRYVALID;
}
// Calculate a logical geometry based on the physical geometry.
LogGeomCalculate (&npU->IDELogGeom, &npU->PhysGeom);
if ((npU->IDELogGeom.NumHeads * npU->IDELogGeom.SectorsPerTrack) == 0)
npU->FlagsT &= ~UTBF_IDEGEOMETRYVALID;
#if TRACES
if (Debug & 16) {
TWRITE(16)
TraceStr ("LGeoB: H:%u S:%u", npU->BPBLogGeom.NumHeads,
npU->BPBLogGeom.SectorsPerTrack);
TWRITE(16)
TraceStr ("LGeo3: H:%u S:%u", npU->I13LogGeom.NumHeads,
npU->I13LogGeom.SectorsPerTrack);
TWRITE(16)
TraceStr ("LGeoI: C:%u H:%u S:%u", npU->IDELogGeom.TotalCylinders,
npU->IDELogGeom.NumHeads,
npU->IDELogGeom.SectorsPerTrack);
TWRITE(16)
}
/* @ttyno: 0 is tty1, 1 is tty2 etc.
*
* Note tty1 is used for console
*/
int do_console_attach(vps_handler *h, envid_t veid, int ttyno)
{
struct vzctl_ve_configure c;
int pid, status;
char buf;
const char esc = 27;
const char enter = 13;
int new_line = 1;
int ret = VZ_SYSTEM_ERROR;
if (ttyno < 0) /* undef */
ttyno = 0; /* tty1 aka console by default */
child_term = 0;
c.veid = veid;
c.key = VE_CONFIGURE_OPEN_TTY;
c.val = ttyno;
c.size = 0;
tty = ioctl(h->vzfd, VZCTL_VE_CONFIGURE, &c);
if (tty < 0) {
fprintf(stderr, "Error in VE_CONFIGURE_OPEN_TTY: %s\n",
strerror(errno));
return VZ_SYSTEM_ERROR;
}
signal(SIGCHLD, child_handler);
signal(SIGWINCH, console_winch);
console_winch(0);
fprintf(stderr, "Attached to CT %d (ESC . to detach)\n", veid);
if ((pid = fork()) < 0) {
fprintf(stderr, "Unable to fork: %s\n", strerror(errno));
return VZ_RESOURCE_ERROR;
}
if (pid == 0) {
char bigbuf[4096];
ssize_t nread;
while (1) {
if ((nread = read(tty, &bigbuf, sizeof bigbuf)) <= 0) {
if (errno == EINTR || errno == EAGAIN)
continue;
if (nread < 0)
err(1, "tty read error: %m");
exit(nread < 0 ? 2 : 0 );
}
if (write(1, &bigbuf, nread) < 0) {
err(1, "stdout write error: %m");
exit(3);
}
}
exit(0);
}
raw_on();
#define TREAD(buf) \
do { \
if (read(0, &buf, sizeof buf) <= 0) { \
warn("stdin read error"); \
goto err; \
} \
} while (0)
#define TWRITE(buf) \
do { \
if (write(tty, &buf, sizeof buf) <= 0) { \
warn("tty write error"); \
goto err; \
} \
} while (0)
while (!child_term) {
TREAD(buf);
if (buf == esc && new_line) {
TREAD(buf);
switch (buf) {
case '.':
goto out;
case '!':
sak();
continue;
default:
TWRITE(esc);
break;
}
}
TWRITE(buf);
new_line = (buf == enter);
}
out:
ret = 0;
err:
kill(pid, SIGKILL);
while (waitpid(pid, &status, 0) == -1)
if (errno != EINTR)
break;
raw_off();
fprintf(stderr, "\nDetached from CT %d\n", veid);
return ret;
}
