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scsi: add support for listing devices on Windows

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Change-Id: I963028c6017796152a201791c078f672bf84a40a
This commit is contained in:
Amaury Pouly 2020-01-29 13:27:18 +01:00
parent 392db31d90
commit 05a40ab07c
2 changed files with 58 additions and 2 deletions
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56
utils/scsi/rbscsi.c
View file

@ -379,6 +379,62 @@ struct rb_scsi_devent_t *rb_scsi_list(void)
struct rb_scsi_devent_t *dev = malloc(sizeof(struct rb_scsi_devent_t));
dev[0].scsi_path = NULL;
dev[0].block_path = NULL;
int nr_dev = 0;
/* list logical drives */
DWORD cbStrSize = GetLogicalDriveStringsA(0, NULL);
LPSTR pszDrives = malloc(cbStrSize);
cbStrSize = GetLogicalDriveStringsA(cbStrSize, pszDrives);
/* drives are separated by a NULL character, the last drive is just a NULL one */
for(LPSTR pszDriveRoot = pszDrives; *pszDriveRoot != '\0';
pszDriveRoot += lstrlen(pszDriveRoot) + 1)
{
// each drive is of the form "X:\"
char path[3];
path[0] = pszDriveRoot[0]; // letter
path[1] = ':';
path[2] = 0;
/* open drive */
rb_scsi_device_t rdev = rb_scsi_open(path, 0, NULL, NULL);
if(rdev == NULL)
continue; // ignore device
// send an INQUIRY device to check it's actually an SCSI device and get information
uint8_t inquiry_data[36];
uint8_t cdb[6] = {0x12, 0, 0, 0, sizeof(inquiry_data), 0}; // INQUIRY
struct rb_scsi_raw_cmd_t raw;
raw.dir = RB_SCSI_READ;
raw.cdb_len = sizeof(cdb);
raw.cdb = cdb;
raw.buf = inquiry_data;
raw.buf_len = sizeof(inquiry_data);
raw.sense_len = 0; // don't bother with SENSE, this command cannot possibly fail for good reasons
raw.sense = NULL;
raw.tmo = 5;
int ret = rb_scsi_raw_xfer(rdev, &raw);
rb_scsi_close(rdev);
if(ret != RB_SCSI_OK)
continue; // ignore device
if(raw.buf_len != (int)sizeof(inquiry_data))
continue; // ignore device (what kind of device would not return all the INQUIRY data?)
/* fill device details */
dev = realloc(dev, (2 + nr_dev) * sizeof(struct rb_scsi_devent_t));
dev[nr_dev].scsi_path = strdup(path);
dev[nr_dev].block_path = strdup(path);
/* fill vendor/model/rev */
char info[17];
snprintf(info, sizeof(info), "%.8s", inquiry_data + 8);
dev[nr_dev].vendor = strdup(info);
snprintf(info, sizeof(info), "%.16s", inquiry_data + 16);
dev[nr_dev].model = strdup(info);
snprintf(info, sizeof(info), "%.4s", inquiry_data + 32);
dev[nr_dev].rev = strdup(info);
/* sentinel */
dev[++nr_dev].scsi_path = NULL;
dev[nr_dev].block_path = NULL;
}
return dev;
}
/* other targets */

4
utils/scsi/rbscsi.h
View file

@ -94,13 +94,13 @@ struct rb_scsi_devent_t
{
/* device path to the raw SCSI device, typically:
* - Linux: /dev/sgX
* - Windows: TODO
* - Windows: C:
* This path can be used directly with scsi_rb_open(), and is guaranteed to
* be valid. */
char *scsi_path;
/* device path to the corresponding block device, if it exists, typically:
* - Linux: /dev/sdX
* - Windows: TODO
* - Windows: C:
* If this path is not-NULL, then it can used directly with scsi_rb_open() */
char *block_path;
/* various information about the device, can be NULL on error */