/*
* Point (dev) at an allocated device specifier matching the string version
* at the beginning of (devspec). Return a pointer to the remaining
* text in (path).
*/
static int
ofw_parsedev(struct ofw_devdesc **dev, const char *devspec, const char **path)
{
struct ofw_devdesc *idev;
struct devsw *dv;
phandle_t handle;
const char *p;
const char *s;
char *ep;
char name[256];
char type[64];
int err;
int len;
int i;
for (p = s = devspec; *s != '\0'; p = s) {
if ((s = strchr(p + 1, '/')) == NULL)
s = strchr(p, '\0');
len = s - devspec;
bcopy(devspec, name, len);
name[len] = '\0';
if ((handle = OF_finddevice(name)) == -1) {
bcopy(name, type, len);
type[len] = '\0';
} else if (OF_getprop(handle, "device_type", type, sizeof(type)) == -1)
continue;
for (i = 0; (dv = devsw[i]) != NULL; i++) {
if (strncmp(dv->dv_name, type, strlen(dv->dv_name)) == 0)
goto found;
}
}
return(ENOENT);
found:
if (path != NULL)
*path = s;
idev = malloc(sizeof(struct ofw_devdesc));
if (idev == NULL) {
printf("ofw_parsedev: malloc failed\n");
return ENOMEM;
}
strcpy(idev->d_path, name);
idev->d_dev = dv;
idev->d_type = dv->dv_type;
if (idev->d_type == DEVT_ZFS) {
p = devspec + strlen(dv->dv_name);
err = zfs_parsedev((struct zfs_devdesc *)idev, p, path);
if (err != 0) {
free(idev);
return (err);
}
}
if (dev == NULL) {
free(idev);
} else {
*dev = idev;
}
return(0);
}
/*
* Point (dev) at an allocated device specifier matching the string version
* at the beginning of (devspec). Return a pointer to the remaining
* text in (path).
*
* In all cases, the beginning of (devspec) is compared to the names
* of known devices in the device switch, and then any following text
* is parsed according to the rules applied to the device type.
*
* For disk-type devices, the syntax is:
*
* disk<unit>[s<slice>][<partition>]:
*
*/
static int
i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path)
{
struct i386_devdesc *idev;
struct devsw *dv;
int i, unit, err;
char *cp;
const char *np;
/* minimum length check */
if (strlen(devspec) < 2)
return(EINVAL);
/* look for a device that matches */
for (i = 0, dv = NULL; devsw[i] != NULL; i++) {
if (!strncmp(devspec, devsw[i]->dv_name, strlen(devsw[i]->dv_name))) {
dv = devsw[i];
break;
}
}
if (dv == NULL)
return(ENOENT);
idev = malloc(sizeof(struct i386_devdesc));
err = 0;
np = (devspec + strlen(dv->dv_name));
switch(dv->dv_type) {
case DEVT_NONE: /* XXX what to do here? Do we care? */
break;
case DEVT_DISK:
err = disk_parsedev((struct disk_devdesc *)idev, np, path);
if (err != 0)
goto fail;
break;
case DEVT_CD:
case DEVT_NET:
unit = 0;
if (*np && (*np != ':')) {
unit = strtol(np, &cp, 0); /* get unit number if present */
if (cp == np) {
err = EUNIT;
goto fail;
}
} else {
cp = (char *)np;
}
if (*cp && (*cp != ':')) {
err = EINVAL;
goto fail;
}
idev->d_unit = unit;
if (path != NULL)
*path = (*cp == 0) ? cp : cp + 1;
break;
case DEVT_ZFS:
err = zfs_parsedev((struct zfs_devdesc *)idev, np, path);
if (err != 0)
goto fail;
break;
default:
err = EINVAL;
goto fail;
}
idev->d_dev = dv;
idev->d_type = dv->dv_type;
if (dev == NULL) {
free(idev);
} else {
*dev = idev;
}
return(0);
fail:
free(idev);
return(err);
}
/*
* Point (dev) at an allocated device specifier matching the string version
* at the beginning of (devspec). Return a pointer to the remaining
* text in (path).
*
* In all cases, the beginning of (devspec) is compared to the names
* of known devices in the device switch, and then any following text
* is parsed according to the rules applied to the device type.
*
* For disk-type devices, the syntax is:
*
* disk<unit>[s<slice>][<partition>]:
*
*/
static int
i386_parsedev(struct i386_devdesc **dev, const char *devspec, const char **path)
{
struct i386_devdesc *idev;
struct devsw *dv;
int i, unit, slice, partition, err;
char *cp;
const char *np;
/* minimum length check */
if (strlen(devspec) < 2)
return(EINVAL);
/* look for a device that matches */
for (i = 0, dv = NULL; devsw[i] != NULL; i++) {
if (!strncmp(devspec, devsw[i]->dv_name, strlen(devsw[i]->dv_name))) {
dv = devsw[i];
break;
}
}
if (dv == NULL)
return(ENOENT);
idev = malloc(sizeof(struct i386_devdesc));
err = 0;
np = (devspec + strlen(dv->dv_name));
switch(dv->dv_type) {
case DEVT_NONE: /* XXX what to do here? Do we care? */
break;
case DEVT_DISK:
unit = -1;
slice = -1;
partition = -1;
if (*np && (*np != ':')) {
unit = strtol(np, &cp, 10); /* next comes the unit number */
if (cp == np) {
err = EUNIT;
goto fail;
}
#ifdef LOADER_GPT_SUPPORT
if (*cp == 'p') { /* got a GPT partition */
np = cp + 1;
slice = strtol(np, &cp, 10);
if (cp == np) {
err = ESLICE;
goto fail;
}
if (*cp && (*cp != ':')) {
err = EINVAL;
goto fail;
}
partition = 0xff;
} else {
#endif
if (*cp == 's') { /* got a slice number */
np = cp + 1;
slice = strtol(np, &cp, 10);
if (cp == np) {
err = ESLICE;
goto fail;
}
}
if (*cp && (*cp != ':')) {
partition = *cp - 'a'; /* got a partition number */
if ((partition < 0) || (partition >= MAXPARTITIONS)) {
err = EPART;
goto fail;
}
cp++;
}
#ifdef LOADER_GPT_SUPPORT
}
#endif
} else {
cp = np;
}
if (*cp && (*cp != ':')) {
err = EINVAL;
goto fail;
}
idev->d_unit = unit;
idev->d_kind.biosdisk.slice = slice;
idev->d_kind.biosdisk.partition = partition;
if (path != NULL)
*path = (*cp == 0) ? cp : cp + 1;
break;
case DEVT_CD:
case DEVT_NET:
unit = 0;
if (*np && (*np != ':')) {
unit = strtol(np, &cp, 0); /* get unit number if present */
if (cp == np) {
err = EUNIT;
goto fail;
}
} else {
cp = np;
}
if (*cp && (*cp != ':')) {
err = EINVAL;
goto fail;
}
idev->d_unit = unit;
if (path != NULL)
*path = (*cp == 0) ? cp : cp + 1;
break;
case DEVT_ZFS:
err = zfs_parsedev((struct zfs_devdesc *)idev, np, path);
if (err != 0)
goto fail;
break;
default:
err = EINVAL;
goto fail;
}
idev->d_dev = dv;
idev->d_type = dv->dv_type;
if (dev == NULL) {
free(idev);
} else {
*dev = idev;
}
return(0);
fail:
free(idev);
return(err);
}
/*
* Point (dev) at an allocated device specifier matching the string version
* at the beginning of (devspec). Return a pointer to the remaining
* text in (path).
*
* In all cases, the beginning of (devspec) is compared to the names
* of known devices in the device switch, and then any following text
* is parsed according to the rules applied to the device type.
*
* For disk-type devices, the syntax is:
*
* fs<unit>:
*/
static int
efi_parsedev(struct devdesc **dev, const char *devspec, const char **path)
{
struct devdesc *idev;
struct devsw *dv;
int i, unit, err;
char *cp;
const char *np;
/* minimum length check */
if (strlen(devspec) < 2)
return (EINVAL);
/* look for a device that matches */
for (i = 0; devsw[i] != NULL; i++) {
dv = devsw[i];
if (!strncmp(devspec, dv->dv_name, strlen(dv->dv_name)))
break;
}
if (devsw[i] == NULL)
return (ENOENT);
np = devspec + strlen(dv->dv_name);
idev = NULL;
err = 0;
switch (dv->dv_type) {
case DEVT_NONE:
break;
case DEVT_DISK:
idev = malloc(sizeof(struct disk_devdesc));
if (idev == NULL)
return (ENOMEM);
err = disk_parsedev((struct disk_devdesc *)idev, np, path);
if (err != 0)
goto fail;
break;
#ifdef EFI_ZFS_BOOT
case DEVT_ZFS:
idev = malloc(sizeof(struct zfs_devdesc));
if (idev == NULL)
return (ENOMEM);
err = zfs_parsedev((struct zfs_devdesc*)idev, np, path);
if (err != 0)
goto fail;
break;
#endif
default:
idev = malloc(sizeof(struct devdesc));
if (idev == NULL)
return (ENOMEM);
unit = 0;
cp = (char *)np;
if (*np != '\0' && *np != ':') {
errno = 0;
unit = strtol(np, &cp, 0);
if (errno != 0 || cp == np) {
err = EUNIT;
goto fail;
}
}
if (*cp != '\0' && *cp != ':') {
err = EINVAL;
goto fail;
}
idev->d_unit = unit;
if (path != NULL)
*path = (*cp == 0) ? cp : cp + 1;
break;
}
idev->d_dev = dv;
idev->d_type = dv->dv_type;
if (dev != NULL)
*dev = idev;
else
free(idev);
return (0);
fail:
free(idev);
return (err);
}
