diff options
| -rw-r--r-- | src/sys/dms/dms_engine.c | 10 | ||||
| -rw-r--r-- | src/sys/include/dms/dms.h | 7 | ||||
| -rw-r--r-- | src/sys/include/sys/dms.h | 20 |
3 files changed, 31 insertions, 6 deletions
diff --git a/src/sys/dms/dms_engine.c b/src/sys/dms/dms_engine.c index 35388cc..d2506a3 100644 --- a/src/sys/dms/dms_engine.c +++ b/src/sys/dms/dms_engine.c @@ -34,11 +34,13 @@ #include <os/systm.h> #include <os/kalloc.h> #include <dms/dms.h> +#include <string.h> static ssize_t dms_io(struct dms_frame *dfp) { struct dms_disk *dp; + struct dms_diskinfo info; size_t len; ssize_t retval = -ENXIO; int error; @@ -81,6 +83,14 @@ dms_io(struct dms_frame *dfp) retval = dms_write(dp, kbuf, dfp->offset, dfp->len); break; + case DMS_OPC_QUERY: + memcpy(info.name, dp->name, sizeof(info.name)); + info.bsize = dp->bsize; + info.id = dp->id; + if (dfp->len > sizeof(info)) + dfp->len = sizeof(info); + retval = copyout(&info, dfp->buf, dfp->len); + break; } kfree(kbuf); diff --git a/src/sys/include/dms/dms.h b/src/sys/include/dms/dms.h index 8453723..835f667 100644 --- a/src/sys/include/dms/dms.h +++ b/src/sys/include/dms/dms.h @@ -34,6 +34,7 @@ #include <sys/queue.h> #include <sys/cdefs.h> #include <sys/types.h> +#include <sys/dms.h> /* * Maximum attached disks, from kconf @@ -49,12 +50,6 @@ __static_assert( "maxiumum disks cannot be zro!" ); -/* Parameters */ -#define DISKNAME_MAX 128 /* Disk name maxlen */ - -/* ID of the disk */ -typedef uint16_t disk_id_t; - /* Forward declarations */ struct dms_disk; diff --git a/src/sys/include/sys/dms.h b/src/sys/include/sys/dms.h index b4d291d..fdc290a 100644 --- a/src/sys/include/sys/dms.h +++ b/src/sys/include/sys/dms.h @@ -36,8 +36,28 @@ #include <stddef.h> #endif /* !_KERNEL */ +#define DISKNAME_MAX 128 /* Disk name maxlen */ + #define DMS_OPC_READ 0x00 /* Read from drive */ #define DMS_OPC_WRITE 0x01 /* Write to drive */ +#define DMS_OPC_QUERY 0x02 /* Query a drive */ + +/* ID of the disk */ +typedef uint16_t disk_id_t; + +/* + * Represents disk information that can be requested + * from a device with a query + * + * @name: Name of disk + * @bsize: Block size + * @id: ID of disk + */ +struct dms_diskinfo { + char name[DISKNAME_MAX]; + uint16_t bsize; + disk_id_t id; +}; /* * Represents data that can be sent between the |