search for: serial_sysfs

...ndex) return index << PART_BITS; } +/* Copy serial number from *s to *d. Copy operation terminates on either + * encountering a nul in *s or after n bytes have been copied, whichever + * occurs first. *d is not forcibly nul terminated. Return # of bytes copied. + */ +static inline int serial_sysfs(char *d, char *s, int n) +{ + char *di = d; + + while (*s && n--) + *d++ = *s++; + return d - di; +} + +static ssize_t virtblk_serial_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gendisk *disk = dev_to_disk(dev); + char id_str[VIRTIO_BLK_ID_BYTES]; +...

...ndex) return index << PART_BITS; } +/* Copy serial number from *s to *d. Copy operation terminates on either + * encountering a nul in *s or after n bytes have been copied, whichever + * occurs first. *d is not forcibly nul terminated. Return # of bytes copied. + */ +static inline int serial_sysfs(char *d, char *s, int n) +{ + char *di = d; + + while (*s && n--) + *d++ = *s++; + return d - di; +} + +static ssize_t virtblk_serial_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gendisk *disk = dev_to_disk(dev); + char id_str[VIRTIO_BLK_ID_BYTES]; +...

Using Rusty's suggestion I've respun the patch removing the special copy function. I've tested this patch in a guest kernel with and without qemu supplying serial numbers for the block devices and it's working as expected. When qemu supplies serial numbers, the correct value is supplied to /sys/block/vdX/serial and can be used by udev for generating disk/by-id paths (without

Using Rusty's suggestion I've respun the patch removing the special copy function. I've tested this patch in a guest kernel with and without qemu supplying serial numbers for the block devices and it's working as expected. When qemu supplies serial numbers, the correct value is supplied to /sys/block/vdX/serial and can be used by udev for generating disk/by-id paths (without