scsi_proc.c revision eb44820c28bc9a042e1157b41c677018a8fdfc74
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/slab.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/proc_fs.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/seq_file.h> 280b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven#include <linux/mutex.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", 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FUNCTION__, sht->proc_name); 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir->owner = sht->module; 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1210b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_unlock(&global_host_template_mutex); 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 124eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 125eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_hostdir_rm - remove directory in /proc for a scsi host 126eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @sht: owner of directory 127eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_hostdir_rm(struct scsi_host_template *sht) 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_info) 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1330b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_lock(&global_host_template_mutex); 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!--sht->present && sht->proc_dir) { 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry(sht->proc_name, proc_scsi); 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir = NULL; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1380b9506723826c68b50fa33e345700ddcac1bed36Arjan van de Ven mutex_unlock(&global_host_template_mutex); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 142eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 143eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_host_add - Add entry for this host to appropriate /proc dir 144eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @shost: host to add 145eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_host_add(struct Scsi_Host *shost) 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_host_template *sht = shost->hostt; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct proc_dir_entry *p; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char name[10]; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sht->proc_dir) 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(name,"%d", shost->host_no); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR, 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_dir, proc_scsi_read, shost); 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!p) { 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "%s: Failed to register host %d in" 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "%s\n", __FUNCTION__, shost->host_no, 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sht->proc_name); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p->write_proc = proc_scsi_write_proc; 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p->owner = sht->module; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 169eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 170eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_proc_host_rm - remove this host's entry from /proc 171eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @shost: which host 172eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_proc_host_rm(struct Scsi_Host *shost) 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char name[10]; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!shost->hostt->proc_dir) 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sprintf(name,"%d", shost->host_no); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry(name, shost->hostt->proc_dir); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 183eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 184eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_print_scsidevice - return data about this host 185eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @dev: A scsi device 186eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @data: &struct seq_file to output to. 187eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 188eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: prints Host, Channel, Id, Lun, Vendor, Model, Rev, Type, 189eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * and revision. 190eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_print_scsidevice(struct device *dev, void *data) 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *sdev = to_scsi_device(dev); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct seq_file *s = data; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Host: scsi%d Channel: %02d Id: %02d Lun: %02d\n Vendor: ", 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sdev->host->host_no, sdev->channel, sdev->id, sdev->lun); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 8; i++) { 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->vendor[i] >= 0x20) 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->vendor[i]); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " Model: "); 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 16; i++) { 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->model[i] >= 0x20) 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->model[i]); 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " Rev: "); 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 4; i++) { 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->rev[i] >= 0x20) 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "%c", sdev->rev[i]); 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " "); 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "\n"); 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2254ff36718ede26ee2da73f2dae94d71e2b06845fcMatthew Wilcox seq_printf(s, " Type: %s ", scsi_device_type(sdev->type)); 22674feb53e8b5020e790e12c6331cbe885d276cc60Alan Stern seq_printf(s, " ANSI SCSI revision: %02x", 22774feb53e8b5020e790e12c6331cbe885d276cc60Alan Stern sdev->scsi_level - (sdev->scsi_level > 1)); 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev->scsi_level == 2) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, " CCS\n"); 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "\n"); 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 236eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 237eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_add_single_device - Respond to user request to probe for/add device 238eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @host: user-supplied decimal integer 239eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @channel: user-supplied decimal integer 240eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @id: user-supplied decimal integer 241eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @lun: user-supplied decimal integer 242eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 243eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: called by writing "scsi add-single-device" to /proc/scsi/scsi. 244eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 245eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * does scsi_host_lookup() and either user_scan() if that transport 246eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * type supports it, or else scsi_scan_host_selected() 247eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 248eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Note: this seems to be aimed exclusively at SCSI parallel busses. 249eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 250eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int scsi_add_single_device(uint host, uint channel, uint id, uint lun) 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost; 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = -ENXIO; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shost = scsi_host_lookup(host); 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(shost)) 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return PTR_ERR(shost); 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 260e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig if (shost->transportt->user_scan) 261e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig error = shost->transportt->user_scan(shost, channel, id, lun); 262e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig else 263e02f3f59225d8c3b2a0ad0dc941a09865e27da61Christoph Hellwig error = scsi_scan_host_selected(shost, channel, id, lun, 1); 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(shost); 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 268eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 269eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_remove_single_device - Respond to user request to remove a device 270eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @host: user-supplied decimal integer 271eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @channel: user-supplied decimal integer 272eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @id: user-supplied decimal integer 273eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @lun: user-supplied decimal integer 274eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 275eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: called by writing "scsi remove-single-device" to 276eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * /proc/scsi/scsi. Does a scsi_device_lookup() and scsi_remove_device() 277eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int scsi_remove_single_device(uint host, uint channel, uint id, uint lun) 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *sdev; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *shost; 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = -ENXIO; 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shost = scsi_host_lookup(host); 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(shost)) 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return PTR_ERR(shost); 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sdev = scsi_device_lookup(shost, channel, id, lun); 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sdev) { 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_remove_device(sdev); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_device_put(sdev); 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = 0; 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(shost); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 298eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 299eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_write - handle writes to /proc/scsi/scsi 300eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @file: not used 301eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @buf: buffer to write 302eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @length: length of buf, at most PAGE_SIZE 303eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @ppos: not used 304eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 305eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Description: this provides a legacy mechanism to add or remove devices by 306eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Host, Channel, ID, and Lun. To use, 307eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi" or 308eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi" with 309eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * "0 1 2 3" replaced by the Host, Channel, Id, and Lun. 310eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 311eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Note: this seems to be aimed at parallel SCSI. Most modern busses (USB, 312eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * SATA, Firewire, Fibre Channel, etc) dynamically assign these values to 313eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * provide a unique identifier and nothing more. 314eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 315eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 316eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t proc_scsi_write(struct file *file, const char __user *buf, 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t length, loff_t *ppos) 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int host, channel, id, lun; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buffer, *p; 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf || length > PAGE_SIZE) 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer = (char *)__get_free_page(GFP_KERNEL); 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buffer) 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(buffer, buf, length)) 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (length < PAGE_SIZE) 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer[length] = '\0'; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (buffer[PAGE_SIZE-1]) 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with "0 1 2 3" replaced by your "Host Channel Id Lun". 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp("scsi add-single-device", buffer, 22)) { 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = buffer + 23; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = simple_strtoul(p, &p, 0); 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds channel = simple_strtoul(p + 1, &p, 0); 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = simple_strtoul(p + 1, &p, 0); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = simple_strtoul(p + 1, &p, 0); 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = scsi_add_single_device(host, channel, id, lun); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Usage: echo "scsi remove-single-device 0 1 2 3" >/proc/scsi/scsi 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with "0 1 2 3" replaced by your "Host Channel Id Lun". 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp("scsi remove-single-device", buffer, 25)) { 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = buffer + 26; 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = simple_strtoul(p, &p, 0); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds channel = simple_strtoul(p + 1, &p, 0); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = simple_strtoul(p + 1, &p, 0); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = simple_strtoul(p + 1, &p, 0); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = scsi_remove_single_device(host, channel, id, lun); 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3702ca48a132167f9f12efba179382979aafde0ab36James Bottomley /* 3712ca48a132167f9f12efba179382979aafde0ab36James Bottomley * convert success returns so that we return the 3722ca48a132167f9f12efba179382979aafde0ab36James Bottomley * number of bytes consumed. 3732ca48a132167f9f12efba179382979aafde0ab36James Bottomley */ 3742ca48a132167f9f12efba179382979aafde0ab36James Bottomley if (!err) 3752ca48a132167f9f12efba179382979aafde0ab36James Bottomley err = length; 3762ca48a132167f9f12efba179382979aafde0ab36James Bottomley 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out: 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page((unsigned long)buffer); 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 382eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 383eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_show - show contents of /proc/scsi/scsi (attached devices) 384eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @s: output goes here 385eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @p: not used 386eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_scsi_show(struct seq_file *s, void *p) 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq_printf(s, "Attached devices:\n"); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bus_for_each_dev(&scsi_bus_type, NULL, s, proc_print_scsidevice); 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 394eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 395eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * proc_scsi_open - glue function 396eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @inode: not used 397eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * @file: passed to single_open() 398eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * 399eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * Associates proc_scsi_show with this file 400eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int proc_scsi_open(struct inode *inode, struct file *file) 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 404eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * We don't really need this for the write case but it doesn't 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * harm either. 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return single_open(file, proc_scsi_show, NULL); 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41000977a59b951207d38380c75f03a36829950265cArjan van de Venstatic const struct file_operations proc_scsi_operations = { 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = proc_scsi_open, 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read = seq_read, 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = proc_scsi_write, 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .llseek = seq_lseek, 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release = single_release, 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 418eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 419eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_init_procfs - create scsi and scsi/scsi in procfs 420eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint __init scsi_init_procfs(void) 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct proc_dir_entry *pde; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds proc_scsi = proc_mkdir("scsi", NULL); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!proc_scsi) 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err1; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pde = create_proc_entry("scsi/scsi", 0, NULL); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!pde) 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err2; 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pde->proc_fops = &proc_scsi_operations; 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr2: 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi", NULL); 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr1: 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 442eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley/** 443eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley * scsi_exit_procfs - Remove scsi/scsi and scsi from procfs 444eb44820c28bc9a042e1157b41c677018a8fdfc74Rob Landley */ 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid scsi_exit_procfs(void) 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi/scsi", NULL); 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds remove_proc_entry("scsi", NULL); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 450