vmur.c (ecd740c6f2f092b90b95fa35f757973589eaaca2) vmur.c (b25472f9b96159cc0b9b7ed449448805973cd789)
1/*
2 * Linux driver for System z and s390 unit record devices
3 * (z/VM virtual punch, reader, printer)
4 *
5 * Copyright IBM Corp. 2001, 2009
6 * Authors: Malcolm Beattie <beattiem@uk.ibm.com>
7 * Michael Holzheu <holzheu@de.ibm.com>
8 * Frank Munzert <munzert@de.ibm.com>

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777 wake_up_interruptible(&urf->urd->wait);
778 urdev_put(urf->urd);
779 urfile_free(urf);
780 return 0;
781}
782
783static loff_t ur_llseek(struct file *file, loff_t offset, int whence)
784{
1/*
2 * Linux driver for System z and s390 unit record devices
3 * (z/VM virtual punch, reader, printer)
4 *
5 * Copyright IBM Corp. 2001, 2009
6 * Authors: Malcolm Beattie <beattiem@uk.ibm.com>
7 * Michael Holzheu <holzheu@de.ibm.com>
8 * Frank Munzert <munzert@de.ibm.com>

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777 wake_up_interruptible(&urf->urd->wait);
778 urdev_put(urf->urd);
779 urfile_free(urf);
780 return 0;
781}
782
783static loff_t ur_llseek(struct file *file, loff_t offset, int whence)
784{
785 loff_t newpos;
786
787 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
788 return -ESPIPE; /* seek allowed only for reader */
789 if (offset % PAGE_SIZE)
790 return -ESPIPE; /* only multiples of 4K allowed */
785 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
786 return -ESPIPE; /* seek allowed only for reader */
787 if (offset % PAGE_SIZE)
788 return -ESPIPE; /* only multiples of 4K allowed */
791 switch (whence) {
792 case 0: /* SEEK_SET */
793 newpos = offset;
794 break;
795 case 1: /* SEEK_CUR */
796 newpos = file->f_pos + offset;
797 break;
798 default:
799 return -EINVAL;
800 }
801 file->f_pos = newpos;
802 return newpos;
789 return no_seek_end_llseek(file, offset, whence);
803}
804
805static const struct file_operations ur_fops = {
806 .owner = THIS_MODULE,
807 .open = ur_open,
808 .release = ur_release,
809 .read = ur_read,
810 .write = ur_write,

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791
792static const struct file_operations ur_fops = {
793 .owner = THIS_MODULE,
794 .open = ur_open,
795 .release = ur_release,
796 .read = ur_read,
797 .write = ur_write,

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