11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/drivers/scsi/scsi_proc.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The functions in this file provide an interface between 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the PROC file system and the SCSI device drivers 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * It is mainly used for debugging, statistics and to pass 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * information directly to the lowlevel driver. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (c) 1995 Michael Neuffer neuffer@goofy.zdv.uni-mainz.de 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version: 0.99.8 last change: 95/09/13 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * generic command parser provided by: 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Andreas Heilwagen <crashcar@informatik.uni-koblenz.de> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * generic_proc_info() support of xxxx_info() by: 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Michael A. Griffith <grif@acm.org> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/proc_fs.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/seq_file.h> 270b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven#include <linux/mutex.h> 285a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/gfp.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_device.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 34e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig#include <scsi/scsi_transport.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "scsi_priv.h" 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "scsi_logging.h" 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4K page size, but our output routines, use some slack for overruns */ 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PROC_BLOCK_SIZE (3*1024) 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct proc_dir_entry *proc_scsi; 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Protect sht->present and sht->proc_dir */ 460b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Venstatic DEFINE_MUTEX(global_host_template_mutex); 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 49eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_read - handle read from /proc by calling host's proc_info() command 50eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @buffer: passed to proc_info 51eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @start: passed to proc_info 52eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @offset: passed to proc_info 53eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @length: passed to proc_info 54eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @eof: returns whether length read was less than requested 55eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @data: pointer to a &struct Scsi_Host 56eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 57eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_scsi_read(char *buffer, char **start, off_t offset, 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length, int *eof, void *data) 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost = data; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int n; 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds n = shost->hostt->proc_info(shost, buffer, start, offset, length, 0); 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *eof = (n < length); 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return n; 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 70eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 71eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_write_proc - Handle write to /proc by calling host's proc_info() 72eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @file: not used 73eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @buf: source of data to write. 74eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @count: number of bytes (at most PROC_BLOCK_SIZE) to write. 75eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @data: pointer to &struct Scsi_Host 76eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_scsi_write_proc(struct file *file, const char __user *buf, 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long count, void *data) 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost = data; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssize_t ret = -ENOMEM; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *page; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *start; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count > PROC_BLOCK_SIZE) 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EOVERFLOW; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page = (char *)__get_free_page(GFP_KERNEL); 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (page) { 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EFAULT; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(page, buf, count)) 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = shost->hostt->proc_info(shost, page, &start, 0, count, 1); 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page((unsigned long)page); 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 100eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 101eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_hostdir_add - Create directory in /proc for a scsi host 102eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @sht: owner of this directory 103eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 104eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Sets sht->proc_dir to the new directory. 105eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 106eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_hostdir_add(struct scsi_host_template *sht) 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_info) 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1120b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_lock(&global_host_template_mutex); 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->present++) { 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir = proc_mkdir(sht->proc_name, proc_scsi); 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_dir) 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s: proc_mkdir failed for %s\n", 117cadbd4a5e36dde7e6c49b587b2c419103c0b7218Harvey Harrison __func__, sht->proc_name); 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1190b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_unlock(&global_host_template_mutex); 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 122eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 123eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_hostdir_rm - remove directory in /proc for a scsi host 124eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @sht: owner of directory 125eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_hostdir_rm(struct scsi_host_template *sht) 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_info) 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1310b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_lock(&global_host_template_mutex); 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!--sht->present && sht->proc_dir) { 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry(sht->proc_name, proc_scsi); 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir = NULL; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1360b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_unlock(&global_host_template_mutex); 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 139eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 140eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 141eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_host_add - Add entry for this host to appropriate /proc dir 142eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @shost: host to add 143eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_host_add(struct Scsi_Host *shost) 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_host_template *sht = shost->hostt; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct proc_dir_entry *p; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char name[10]; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_dir) 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(name,"%d", shost->host_no); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR, 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir, proc_scsi_read, shost); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!p) { 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s: Failed to register host %d in" 158cadbd4a5e36dde7e6c49b587b2c419103c0b7218Harvey Harrison "%s\n", __func__, shost->host_no, 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_name); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p->write_proc = proc_scsi_write_proc; 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 166eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 167eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_host_rm - remove this host's entry from /proc 168eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @shost: which host 169eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_host_rm(struct Scsi_Host *shost) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char name[10]; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!shost->hostt->proc_dir) 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(name,"%d", shost->host_no); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry(name, shost->hostt->proc_dir); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 180eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 181eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_print_scsidevice - return data about this host 182eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @dev: A scsi device 183eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @data: &struct seq_file to output to. 184eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 185eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: prints Host, Channel, Id, Lun, Vendor, Model, Rev, Type, 186eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * and revision. 187eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_print_scsidevice(struct device *dev, void *data) 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 190b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reinecke struct scsi_device *sdev; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct seq_file *s = data; 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 194b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reinecke if (!scsi_is_sdev_device(dev)) 195b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reinecke goto out; 196b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reinecke 197b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reinecke sdev = to_scsi_device(dev); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Host: scsi%d Channel: %02d Id: %02d Lun: %02d\n Vendor: ", 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 8; i++) { 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->vendor[i] >= 0x20) 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->vendor[i]); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " Model: "); 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 16; i++) { 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->model[i] >= 0x20) 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->model[i]); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " Rev: "); 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 4; i++) { 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->rev[i] >= 0x20) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->rev[i]); 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "\n"); 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2264ff36718ede26ee2da73f2dae94d71e2b06845fcMatthew Wilcox seq_printf(s, " Type: %s ", scsi_device_type(sdev->type)); 22774feb53e8b5020e790e12c6331cbe885d276cc60Alan Stern seq_printf(s, " ANSI SCSI revision: %02x", 22874feb53e8b5020e790e12c6331cbe885d276cc60Alan Stern sdev->scsi_level - (sdev->scsi_level > 1)); 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->scsi_level == 2) 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " CCS\n"); 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "\n"); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 234b0ed43360fdca227048d88a08290365cb681c1a8Hannes Reineckeout: 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 238eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 239eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_add_single_device - Respond to user request to probe for/add device 240eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @host: user-supplied decimal integer 241eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @channel: user-supplied decimal integer 242eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @id: user-supplied decimal integer 243eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @lun: user-supplied decimal integer 244eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 245eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: called by writing "scsi add-single-device" to /proc/scsi/scsi. 246eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 247eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * does scsi_host_lookup() and either user_scan() if that transport 248eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * type supports it, or else scsi_scan_host_selected() 249eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 250eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Note: this seems to be aimed exclusively at SCSI parallel busses. 251eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 252eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int scsi_add_single_device(uint host, uint channel, uint id, uint lun) 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = -ENXIO; 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shost = scsi_host_lookup(host); 259315cb0ad124575e75da2d0e0a95990587fc23485James Smart if (!shost) 260315cb0ad124575e75da2d0e0a95990587fc23485James Smart return error; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 262e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig if (shost->transportt->user_scan) 263e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig error = shost->transportt->user_scan(shost, channel, id, lun); 264e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig else 265e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig error = scsi_scan_host_selected(shost, channel, id, lun, 1); 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(shost); 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 270eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 271eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_remove_single_device - Respond to user request to remove a device 272eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @host: user-supplied decimal integer 273eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @channel: user-supplied decimal integer 274eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @id: user-supplied decimal integer 275eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @lun: user-supplied decimal integer 276eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 277eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: called by writing "scsi remove-single-device" to 278eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * /proc/scsi/scsi. Does a scsi_device_lookup() and scsi_remove_device() 279eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int scsi_remove_single_device(uint host, uint channel, uint id, uint lun) 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *sdev; 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost; 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = -ENXIO; 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shost = scsi_host_lookup(host); 287315cb0ad124575e75da2d0e0a95990587fc23485James Smart if (!shost) 288315cb0ad124575e75da2d0e0a95990587fc23485James Smart return error; 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sdev = scsi_device_lookup(shost, channel, id, lun); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev) { 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_remove_device(sdev); 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_device_put(sdev); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = 0; 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(shost); 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 300eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 301eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_write - handle writes to /proc/scsi/scsi 302eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @file: not used 303eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @buf: buffer to write 304eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @length: length of buf, at most PAGE_SIZE 305eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @ppos: not used 306eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 307eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: this provides a legacy mechanism to add or remove devices by 308eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Host, Channel, ID, and Lun. To use, 309eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi" or 310eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi" with 311eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "0 1 2 3" replaced by the Host, Channel, Id, and Lun. 312eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 313eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Note: this seems to be aimed at parallel SCSI. Most modern busses (USB, 314eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * SATA, Firewire, Fibre Channel, etc) dynamically assign these values to 315eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * provide a unique identifier and nothing more. 316eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 317eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 318eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t proc_scsi_write(struct file *file, const char __user *buf, 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t length, loff_t *ppos) 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int host, channel, id, lun; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buffer, *p; 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf || length > PAGE_SIZE) 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer = (char *)__get_free_page(GFP_KERNEL); 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buffer) 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(buffer, buf, length)) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (length < PAGE_SIZE) 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer[length] = '\0'; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (buffer[PAGE_SIZE-1]) 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with "0 1 2 3" replaced by your "Host Channel Id Lun". 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp("scsi add-single-device", buffer, 22)) { 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = buffer + 23; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = simple_strtoul(p, &p, 0); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds channel = simple_strtoul(p + 1, &p, 0); 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = simple_strtoul(p + 1, &p, 0); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = simple_strtoul(p + 1, &p, 0); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = scsi_add_single_device(host, channel, id, lun); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Usage: echo "scsi remove-single-device 0 1 2 3" >/proc/scsi/scsi 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with "0 1 2 3" replaced by your "Host Channel Id Lun". 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp("scsi remove-single-device", buffer, 25)) { 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = buffer + 26; 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = simple_strtoul(p, &p, 0); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds channel = simple_strtoul(p + 1, &p, 0); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = simple_strtoul(p + 1, &p, 0); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = simple_strtoul(p + 1, &p, 0); 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = scsi_remove_single_device(host, channel, id, lun); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3722ca48a132167f9f12efba179382979aafde0ab36James Bottomley /* 3732ca48a132167f9f12efba179382979aafde0ab36James Bottomley * convert success returns so that we return the 3742ca48a132167f9f12efba179382979aafde0ab36James Bottomley * number of bytes consumed. 3752ca48a132167f9f12efba179382979aafde0ab36James Bottomley */ 3762ca48a132167f9f12efba179382979aafde0ab36James Bottomley if (!err) 3772ca48a132167f9f12efba179382979aafde0ab36James Bottomley err = length; 3782ca48a132167f9f12efba179382979aafde0ab36James Bottomley 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out: 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page((unsigned long)buffer); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 384e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic int always_match(struct device *dev, void *data) 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 386e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return 1; 387e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney} 388e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 389e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic inline struct device *next_scsi_device(struct device *start) 390e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney{ 391e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney struct device *next = bus_find_device(&scsi_bus_type, start, NULL, 392e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney always_match); 393e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney put_device(start); 394e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return next; 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 397e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic void *scsi_seq_start(struct seq_file *sfile, loff_t *pos) 398e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney{ 399e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney struct device *dev = NULL; 400e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney loff_t n = *pos; 401e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 402e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney while ((dev = next_scsi_device(dev))) { 403e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney if (!n--) 404e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney break; 405e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney sfile->private++; 406e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney } 407e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return dev; 408e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney} 409e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 410e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic void *scsi_seq_next(struct seq_file *sfile, void *v, loff_t *pos) 411e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney{ 412e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney (*pos)++; 413e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney sfile->private++; 414e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return next_scsi_device(v); 415e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney} 416e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 417e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic void scsi_seq_stop(struct seq_file *sfile, void *v) 418e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney{ 419e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney put_device(v); 420e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney} 421e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 422e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic int scsi_seq_show(struct seq_file *sfile, void *dev) 423e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney{ 424e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney if (!sfile->private) 425e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney seq_puts(sfile, "Attached devices:\n"); 426e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 427e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return proc_print_scsidevice(dev, sfile); 428e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney} 429e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 430e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoneystatic const struct seq_operations scsi_seq_ops = { 431e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney .start = scsi_seq_start, 432e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney .next = scsi_seq_next, 433e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney .stop = scsi_seq_stop, 434e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney .show = scsi_seq_show 435e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney}; 436e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney 437eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 438eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_open - glue function 439eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @inode: not used 440eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @file: passed to single_open() 441eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 442eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Associates proc_scsi_show with this file 443eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_scsi_open(struct inode *inode, struct file *file) 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 447eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * We don't really need this for the write case but it doesn't 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * harm either. 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 450e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney return seq_open(file, &scsi_seq_ops); 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 45300977a59b951207d38380c75f03a36829950265cArjan van de Venstatic const struct file_operations proc_scsi_operations = { 454a973909fc32be90884280b7a8cd2f2e093c97890Denis V. Lunev .owner = THIS_MODULE, 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = proc_scsi_open, 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read = seq_read, 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = proc_scsi_write, 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .llseek = seq_lseek, 459e37c4913c555bd149eba3af953fb5d3a1686dfbdJeff Mahoney .release = seq_release, 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 462eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 463eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_init_procfs - create scsi and scsi/scsi in procfs 464eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint __init scsi_init_procfs(void) 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct proc_dir_entry *pde; 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds proc_scsi = proc_mkdir("scsi", NULL); 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!proc_scsi) 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err1; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 473a973909fc32be90884280b7a8cd2f2e093c97890Denis V. Lunev pde = proc_create("scsi/scsi", 0, NULL, &proc_scsi_operations); 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!pde) 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err2; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr2: 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi", NULL); 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr1: 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 485eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 486eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_exit_procfs - Remove scsi/scsi and scsi from procfs 487eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_exit_procfs(void) 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi/scsi", NULL); 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi", NULL); 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 493