a53c8fab3f
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/*
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* tape device driver for S/390 and zSeries tapes.
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*
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* S390 and zSeries version
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* Copyright IBM Corp. 2001
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Michael Holzheu <holzheu@de.ibm.com>
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* Tuan Ngo-Anh <ngoanh@de.ibm.com>
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*
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* PROCFS Functions
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*/
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#define KMSG_COMPONENT "tape"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/module.h>
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#include <linux/vmalloc.h>
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#include <linux/seq_file.h>
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#include <linux/proc_fs.h>
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#define TAPE_DBF_AREA tape_core_dbf
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#include "tape.h"
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static const char *tape_med_st_verbose[MS_SIZE] =
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{
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[MS_UNKNOWN] = "UNKNOWN ",
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[MS_LOADED] = "LOADED ",
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[MS_UNLOADED] = "UNLOADED"
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};
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/* our proc tapedevices entry */
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static struct proc_dir_entry *tape_proc_devices;
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/*
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* Show function for /proc/tapedevices
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*/
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static int tape_proc_show(struct seq_file *m, void *v)
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{
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struct tape_device *device;
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struct tape_request *request;
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const char *str;
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unsigned long n;
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n = (unsigned long) v - 1;
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if (!n) {
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seq_printf(m, "TapeNo\tBusID CuType/Model\t"
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"DevType/Model\tBlkSize\tState\tOp\tMedState\n");
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}
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device = tape_find_device(n);
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if (IS_ERR(device))
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return 0;
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spin_lock_irq(get_ccwdev_lock(device->cdev));
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seq_printf(m, "%d\t", (int) n);
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seq_printf(m, "%-10.10s ", dev_name(&device->cdev->dev));
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seq_printf(m, "%04X/", device->cdev->id.cu_type);
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seq_printf(m, "%02X\t", device->cdev->id.cu_model);
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seq_printf(m, "%04X/", device->cdev->id.dev_type);
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seq_printf(m, "%02X\t\t", device->cdev->id.dev_model);
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if (device->char_data.block_size == 0)
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seq_printf(m, "auto\t");
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else
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seq_printf(m, "%i\t", device->char_data.block_size);
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if (device->tape_state >= 0 &&
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device->tape_state < TS_SIZE)
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str = tape_state_verbose[device->tape_state];
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else
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str = "UNKNOWN";
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seq_printf(m, "%s\t", str);
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if (!list_empty(&device->req_queue)) {
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request = list_entry(device->req_queue.next,
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struct tape_request, list);
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str = tape_op_verbose[request->op];
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} else
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str = "---";
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seq_printf(m, "%s\t", str);
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seq_printf(m, "%s\n", tape_med_st_verbose[device->medium_state]);
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spin_unlock_irq(get_ccwdev_lock(device->cdev));
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tape_put_device(device);
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return 0;
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}
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static void *tape_proc_start(struct seq_file *m, loff_t *pos)
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{
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if (*pos >= 256 / TAPE_MINORS_PER_DEV)
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return NULL;
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return (void *)((unsigned long) *pos + 1);
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}
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static void *tape_proc_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return tape_proc_start(m, pos);
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}
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static void tape_proc_stop(struct seq_file *m, void *v)
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{
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}
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static const struct seq_operations tape_proc_seq = {
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.start = tape_proc_start,
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.next = tape_proc_next,
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.stop = tape_proc_stop,
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.show = tape_proc_show,
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};
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static int tape_proc_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &tape_proc_seq);
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}
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static const struct file_operations tape_proc_ops =
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{
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.owner = THIS_MODULE,
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.open = tape_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*
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* Initialize procfs stuff on startup
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*/
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void
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tape_proc_init(void)
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{
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tape_proc_devices =
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proc_create("tapedevices", S_IFREG | S_IRUGO | S_IWUSR, NULL,
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&tape_proc_ops);
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if (tape_proc_devices == NULL) {
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return;
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}
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}
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/*
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* Cleanup all stuff registered to the procfs
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*/
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void
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tape_proc_cleanup(void)
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{
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if (tape_proc_devices != NULL)
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remove_proc_entry ("tapedevices", NULL);
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}
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