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Allow to identify disk on 2nd ide bus (generally cdrom (hdc) on PC)

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This commit is contained in:
Laurent Vivier 2006-09-13 21:32:45 +00:00
parent 9d5ff84740
commit a57f6a8617
3 changed files with 23 additions and 8 deletions
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16
libemile/emile_scsi_get_dev.c
View File

@ -16,13 +16,20 @@ int emile_get_dev_name(char *buffer, int driver, int disk, int partition)
{
switch(driver)
{
case MAJOR_HD:
case MAJOR_IDE0:
if (partition == 0)
sprintf(buffer, "/dev/hd%c", 'a' + disk);
else
sprintf(buffer, "/dev/hd%c%d", 'a' + disk,
partition);
break;
case MAJOR_IDE1:
if (partition == 0)
sprintf(buffer, "/dev/hd%c", 'c' + disk);
else
sprintf(buffer, "/dev/hd%c%d", 'c' + disk,
partition);
break;
case MAJOR_LOOP:
sprintf(buffer, "/dev/loop%d", disk);
break;
@ -53,7 +60,7 @@ int emile_scsi_get_dev(int fd, int* driver, int *disk, int *partition)
dev = S_ISREG(st.st_mode) ? st.st_dev : st.st_rdev;
major = (dev >> 8) & 0x0F; /* major number = driver id */
major = (dev >> 8) & 0xFF; /* major number = driver id */
minor = dev & 0xFF; /* minor number = disk id */
*driver = major;
@ -67,10 +74,13 @@ int emile_scsi_get_dev(int fd, int* driver, int *disk, int *partition)
*disk = minor & 0xFF;
*partition = 0;
break;
case MAJOR_HD: /* ATA disks */
case MAJOR_IDE0:
*disk = minor >> 6;
*partition = minor & 0x3F;
break;
case MAJOR_IDE1:
*disk = minor >> 6;
*partition = minor & 0x3F;
default:
fprintf(stderr, "Unknown device major number %d\n", major);
return -1;

12
libemile/emile_scsi_get_rdev.c
View File

@ -22,17 +22,21 @@ int emile_scsi_get_rdev(char* dev_name, int* driver, int *disk, int *partition)
/* not a block device */
return -1;
major = (st.st_rdev >> 8) & 0x0F;
major = (st.st_rdev >> 8) & 0xFF;
*driver = major;
switch(major)
{
case MAJOR_SD:
*disk = (st.st_rdev & 0xFF) >> 4;
*partition = st.st_rdev & 0x0F;
if (partition) *partition = st.st_rdev & 0x0F;
break;
case MAJOR_HD:
case MAJOR_IDE0:
*disk = (st.st_rdev & 0xFF) >> 6;
*partition = st.st_rdev & 0x3F;
if (partition) *partition = st.st_rdev & 0x3F;
break;
case MAJOR_IDE1:
*disk = 2 + (st.st_rdev & 0xFF) >> 6;
if (partition) *partition = st.st_rdev & 0x3F;
break;
default:
return -1;

3
libemile/libemile.h
View File

@ -28,9 +28,10 @@ static __attribute__((used)) char* libemile_header = "$CVSHeader$";
#define FIRST_LEVEL_SIZE (FLOPPY_SECTOR_SIZE * 2)
#define BOOTBLOCK_SIZE (FLOPPY_SECTOR_SIZE * 2)
#define MAJOR_HD 3
#define MAJOR_IDE0 3
#define MAJOR_LOOP 7
#define MAJOR_SD 8
#define MAJOR_IDE1 22
enum {
EEMILE_CANNOT_READ_FIRST = -2,