SymbX/systemd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

udev: build by-path identifiers for ATA devices.

Browse Source 
/dev/disk/by-path

total 0
lrwxrwxrwx. 1 root root  9 Sep  4 10:02 pci-0000:00:1f.2-ata-2 -> ../../sr0
lrwxrwxrwx. 1 root root  9 Sep  4 10:02 pci-0000:00:1f.2-ata-3 -> ../../sdd
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:00:1f.2-ata-3-part1 -> ../../sdd1
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:00:1f.2-ata-3-part2 -> ../../sdd2
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:00:1f.2-ata-3-part3 -> ../../sdd3
lrwxrwxrwx. 1 root root  9 Sep  4 10:02 pci-0000:03:00.0-ata-4 -> ../../sda
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:03:00.0-ata-4-part1 -> ../../sda1
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:03:00.0-ata-4-part2 -> ../../sda2
lrwxrwxrwx. 1 root root  9 Sep  4 10:02 pci-0000:08:00.0-ata-1 -> ../../sdc
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:08:00.0-ata-1-part1 -> ../../sdc1
lrwxrwxrwx. 1 root root 10 Sep  4 10:02 pci-0000:08:00.0-ata-1-part2 -> ../../sdc2
This commit is contained in:
David Milburn
2015-09-08 16:41:49 -05:00
parent da323858ef
commit ba86822db7
1 changed files with 34 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/udev/udev-builtin-path_id.c
+34 -12
View File
@@ -317,6 +317,39 @@ out:
return parent;
}
static struct udev_device *handle_scsi_ata(struct udev_device *parent, char **path) {
struct udev *udev = udev_device_get_udev(parent);
struct udev_device *targetdev;
struct udev_device *target_parent;
struct udev_device *atadev;
const char *port_no;
assert(parent);
assert(path);
targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_host");
if (!targetdev)
return NULL;
target_parent = udev_device_get_parent(targetdev);
if (!target_parent)
return NULL;
atadev = udev_device_new_from_subsystem_sysname(udev, "ata_port", udev_device_get_sysname(target_parent));
if (!atadev)
return NULL;
port_no = udev_device_get_sysattr_value(atadev, "port_no");
if (!port_no) {
parent = NULL;
goto out;
}
path_prepend(path, "ata-%s", port_no);
out:
udev_device_unref(atadev);
return parent;
}
static struct udev_device *handle_scsi_default(struct udev_device *parent, char **path) {
struct udev_device *hostdev;
int host, bus, target, lun;
@@ -482,19 +515,8 @@ static struct udev_device *handle_scsi(struct udev_device *parent, char **path,
goto out;
}
/*
* We do not support the ATA transport class, it uses global counters
* to name the ata devices which numbers spread across multiple
* controllers.
*
* The real link numbers are not exported. Also, possible chains of ports
* behind port multipliers cannot be composed that way.
*
* Until all that is solved at the kernel level, there are no by-path/
* links for ATA devices.
*/
if (strstr(name, "/ata") != NULL) {
parent = NULL;
parent = handle_scsi_ata(parent, path);
goto out;
}