^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/scsi/scsi_proc.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * The functions in this file provide an interface between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the PROC file system and the SCSI device drivers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * It is mainly used for debugging, statistics and to pass
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * information directly to the lowlevel driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * (c) 1995 Michael Neuffer neuffer@goofy.zdv.uni-mainz.de
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Version: 0.99.8 last change: 95/09/13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * generic command parser provided by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Andreas Heilwagen <crashcar@informatik.uni-koblenz.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * generic_proc_info() support of xxxx_info() by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Michael A. Griffith <grif@acm.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include "scsi_priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "scsi_logging.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* 4K page size, but our output routines, use some slack for overruns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define PROC_BLOCK_SIZE (3*1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static struct proc_dir_entry *proc_scsi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Protect sht->present and sht->proc_dir */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static DEFINE_MUTEX(global_host_template_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static ssize_t proc_scsi_host_write(struct file *file, const char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct Scsi_Host *shost = PDE_DATA(file_inode(file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ssize_t ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) char *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (count > PROC_BLOCK_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return -EOVERFLOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (!shost->hostt->write_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) page = (char *)__get_free_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (page) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (copy_from_user(page, buf, count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ret = shost->hostt->write_info(shost, page, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) free_page((unsigned long)page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int proc_scsi_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct Scsi_Host *shost = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return shost->hostt->show_info(m, shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int proc_scsi_host_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return single_open_size(file, proc_scsi_show, PDE_DATA(inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 4 * PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static const struct proc_ops proc_scsi_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .proc_open = proc_scsi_host_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .proc_release = single_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .proc_read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .proc_lseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .proc_write = proc_scsi_host_write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * scsi_proc_hostdir_add - Create directory in /proc for a scsi host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @sht: owner of this directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Sets sht->proc_dir to the new directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) void scsi_proc_hostdir_add(struct scsi_host_template *sht)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!sht->show_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) mutex_lock(&global_host_template_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (!sht->present++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) sht->proc_dir = proc_mkdir(sht->proc_name, proc_scsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (!sht->proc_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) printk(KERN_ERR "%s: proc_mkdir failed for %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __func__, sht->proc_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) mutex_unlock(&global_host_template_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * scsi_proc_hostdir_rm - remove directory in /proc for a scsi host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * @sht: owner of directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (!sht->show_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) mutex_lock(&global_host_template_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (!--sht->present && sht->proc_dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) remove_proc_entry(sht->proc_name, proc_scsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) sht->proc_dir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) mutex_unlock(&global_host_template_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * scsi_proc_host_add - Add entry for this host to appropriate /proc dir
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @shost: host to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) void scsi_proc_host_add(struct Scsi_Host *shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct scsi_host_template *sht = shost->hostt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct proc_dir_entry *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) char name[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (!sht->proc_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) sprintf(name,"%d", shost->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) p = proc_create_data(name, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) sht->proc_dir, &proc_scsi_ops, shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) printk(KERN_ERR "%s: Failed to register host %d in"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) "%s\n", __func__, shost->host_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) sht->proc_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * scsi_proc_host_rm - remove this host's entry from /proc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * @shost: which host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) void scsi_proc_host_rm(struct Scsi_Host *shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) char name[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!shost->hostt->proc_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) sprintf(name,"%d", shost->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) remove_proc_entry(name, shost->hostt->proc_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * proc_print_scsidevice - return data about this host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * @dev: A scsi device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @data: &struct seq_file to output to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * Description: prints Host, Channel, Id, Lun, Vendor, Model, Rev, Type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * and revision.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int proc_print_scsidevice(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct scsi_device *sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct seq_file *s = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (!scsi_is_sdev_device(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) sdev = to_scsi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) seq_printf(s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) "Host: scsi%d Channel: %02d Id: %02d Lun: %02llu\n Vendor: ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (sdev->vendor[i] >= 0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) seq_putc(s, sdev->vendor[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) seq_putc(s, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) seq_puts(s, " Model: ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) for (i = 0; i < 16; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (sdev->model[i] >= 0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) seq_putc(s, sdev->model[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) seq_putc(s, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) seq_puts(s, " Rev: ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) for (i = 0; i < 4; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (sdev->rev[i] >= 0x20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) seq_putc(s, sdev->rev[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) seq_putc(s, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) seq_printf(s, " Type: %s ", scsi_device_type(sdev->type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) seq_printf(s, " ANSI SCSI revision: %02x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) sdev->scsi_level - (sdev->scsi_level > 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (sdev->scsi_level == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) seq_puts(s, " CCS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * scsi_add_single_device - Respond to user request to probe for/add device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @host: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * @channel: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * @id: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * @lun: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * Description: called by writing "scsi add-single-device" to /proc/scsi/scsi.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * does scsi_host_lookup() and either user_scan() if that transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * type supports it, or else scsi_scan_host_selected()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * Note: this seems to be aimed exclusively at SCSI parallel busses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int scsi_add_single_device(uint host, uint channel, uint id, uint lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int error = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) shost = scsi_host_lookup(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (!shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (shost->transportt->user_scan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) error = shost->transportt->user_scan(shost, channel, id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) error = scsi_scan_host_selected(shost, channel, id, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) SCSI_SCAN_MANUAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) scsi_host_put(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * scsi_remove_single_device - Respond to user request to remove a device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * @host: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * @channel: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * @id: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * @lun: user-supplied decimal integer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * Description: called by writing "scsi remove-single-device" to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * /proc/scsi/scsi. Does a scsi_device_lookup() and scsi_remove_device()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int scsi_remove_single_device(uint host, uint channel, uint id, uint lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct scsi_device *sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) int error = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) shost = scsi_host_lookup(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (!shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) sdev = scsi_device_lookup(shost, channel, id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (sdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) scsi_remove_device(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) scsi_device_put(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) scsi_host_put(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * proc_scsi_write - handle writes to /proc/scsi/scsi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * @file: not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * @buf: buffer to write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) * @length: length of buf, at most PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * @ppos: not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * Description: this provides a legacy mechanism to add or remove devices by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * Host, Channel, ID, and Lun. To use,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * "echo 'scsi add-single-device 0 1 2 3' > /proc/scsi/scsi" or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * "echo 'scsi remove-single-device 0 1 2 3' > /proc/scsi/scsi" with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * "0 1 2 3" replaced by the Host, Channel, Id, and Lun.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * Note: this seems to be aimed at parallel SCSI. Most modern busses (USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * SATA, Firewire, Fibre Channel, etc) dynamically assign these values to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * provide a unique identifier and nothing more.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) size_t length, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) int host, channel, id, lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) char *buffer, *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (!buf || length > PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) buffer = (char *)__get_free_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (copy_from_user(buffer, buf, length))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (length < PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) buffer[length] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) else if (buffer[PAGE_SIZE-1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * with "0 1 2 3" replaced by your "Host Channel Id Lun".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (!strncmp("scsi add-single-device", buffer, 22)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) p = buffer + 23;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) host = simple_strtoul(p, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) channel = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) id = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) lun = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) err = scsi_add_single_device(host, channel, id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * Usage: echo "scsi remove-single-device 0 1 2 3" >/proc/scsi/scsi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * with "0 1 2 3" replaced by your "Host Channel Id Lun".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) } else if (!strncmp("scsi remove-single-device", buffer, 25)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) p = buffer + 26;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) host = simple_strtoul(p, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) channel = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) id = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) lun = simple_strtoul(p + 1, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) err = scsi_remove_single_device(host, channel, id, lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) * convert success returns so that we return the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * number of bytes consumed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) err = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) free_page((unsigned long)buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static inline struct device *next_scsi_device(struct device *start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct device *next = bus_find_next_device(&scsi_bus_type, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) put_device(start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static void *scsi_seq_start(struct seq_file *sfile, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) loff_t n = *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) while ((dev = next_scsi_device(dev))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (!n--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) sfile->private++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static void *scsi_seq_next(struct seq_file *sfile, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) (*pos)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) sfile->private++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return next_scsi_device(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static void scsi_seq_stop(struct seq_file *sfile, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) put_device(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static int scsi_seq_show(struct seq_file *sfile, void *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (!sfile->private)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) seq_puts(sfile, "Attached devices:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return proc_print_scsidevice(dev, sfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static const struct seq_operations scsi_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) .start = scsi_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) .next = scsi_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) .stop = scsi_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) .show = scsi_seq_show
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * proc_scsi_open - glue function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) * @inode: not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * @file: passed to single_open()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * Associates proc_scsi_show with this file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) static int proc_scsi_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) * We don't really need this for the write case but it doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * harm either.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return seq_open(file, &scsi_seq_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static const struct proc_ops scsi_scsi_proc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) .proc_open = proc_scsi_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) .proc_read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) .proc_write = proc_scsi_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) .proc_lseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) .proc_release = seq_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * scsi_init_procfs - create scsi and scsi/scsi in procfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) int __init scsi_init_procfs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct proc_dir_entry *pde;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) proc_scsi = proc_mkdir("scsi", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (!proc_scsi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) pde = proc_create("scsi/scsi", 0, NULL, &scsi_scsi_proc_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (!pde)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) remove_proc_entry("scsi", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * scsi_exit_procfs - Remove scsi/scsi and scsi from procfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) void scsi_exit_procfs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) remove_proc_entry("scsi/scsi", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) remove_proc_entry("scsi", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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