cregit-Linux how code gets into the kernel

Release 4.14 drivers/ide/ide-disk_proc.c

Directory: drivers/ide
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/seq_file.h>

#include "ide-disk.h"


static int smart_enable(ide_drive_t *drive) { struct ide_cmd cmd; struct ide_taskfile *tf = &cmd.tf; memset(&cmd, 0, sizeof(cmd)); tf->feature = ATA_SMART_ENABLE; tf->lbam = ATA_SMART_LBAM_PASS; tf->lbah = ATA_SMART_LBAH_PASS; tf->command = ATA_CMD_SMART; cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; return ide_no_data_taskfile(drive, &cmd); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz7579.79%266.67%
Sergei Shtylyov1920.21%133.33%
Total94100.00%3100.00%


static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) { struct ide_cmd cmd; struct ide_taskfile *tf = &cmd.tf; memset(&cmd, 0, sizeof(cmd)); tf->feature = sub_cmd; tf->nsect = 0x01; tf->lbam = ATA_SMART_LBAM_PASS; tf->lbah = ATA_SMART_LBAH_PASS; tf->command = ATA_CMD_SMART; cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE; cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE; cmd.protocol = ATA_PROT_PIO; return ide_raw_taskfile(drive, &cmd, buf, 1); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz9883.76%375.00%
Sergei Shtylyov1916.24%125.00%
Total117100.00%4100.00%


static int idedisk_cache_proc_show(struct seq_file *m, void *v) { ide_drive_t *drive = (ide_drive_t *) m->private; if (drive->dev_flags & IDE_DFLAG_ID_READ) seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2); else seq_printf(m, "(none)\n"); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz4775.81%150.00%
Alexey Dobriyan1524.19%150.00%
Total62100.00%2100.00%


static int idedisk_cache_proc_open(struct inode *inode, struct file *file) { return single_open(file, idedisk_cache_proc_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan2275.86%133.33%
Bartlomiej Zolnierkiewicz620.69%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations idedisk_cache_proc_fops = { .owner = THIS_MODULE, .open = idedisk_cache_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, };
static int idedisk_capacity_proc_show(struct seq_file *m, void *v) { ide_drive_t*drive = (ide_drive_t *)m->private; seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz3167.39%266.67%
Alexey Dobriyan1532.61%133.33%
Total46100.00%3100.00%


static int idedisk_capacity_proc_open(struct inode *inode, struct file *file) { return single_open(file, idedisk_capacity_proc_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan2275.86%133.33%
Bartlomiej Zolnierkiewicz620.69%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations idedisk_capacity_proc_fops = { .owner = THIS_MODULE, .open = idedisk_capacity_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, };
static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd) { u8 *buf; buf = kmalloc(SECTOR_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; (void)smart_enable(drive); if (get_smart_data(drive, buf, sub_cmd) == 0) { __le16 *val = (__le16 *)buf; int i; for (i = 0; i < SECTOR_SIZE / 2; i++) { seq_printf(m, "%04x%c", le16_to_cpu(val[i]), (i % 8) == 7 ? '\n' : ' '); } } kfree(buf); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan6450.00%133.33%
Bartlomiej Zolnierkiewicz6450.00%266.67%
Total128100.00%3100.00%


static int idedisk_sv_proc_show(struct seq_file *m, void *v) { return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES); }

Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz1762.96%150.00%
Alexey Dobriyan1037.04%150.00%
Total27100.00%2100.00%


static int idedisk_sv_proc_open(struct inode *inode, struct file *file) { return single_open(file, idedisk_sv_proc_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan2275.86%133.33%
Bartlomiej Zolnierkiewicz620.69%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations idedisk_sv_proc_fops = { .owner = THIS_MODULE, .open = idedisk_sv_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, };
static int idedisk_st_proc_show(struct seq_file *m, void *v) { return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan1659.26%150.00%
Bartlomiej Zolnierkiewicz1140.74%150.00%
Total27100.00%2100.00%


static int idedisk_st_proc_open(struct inode *inode, struct file *file) { return single_open(file, idedisk_st_proc_show, PDE_DATA(inode)); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan2379.31%133.33%
Bartlomiej Zolnierkiewicz517.24%133.33%
Al Viro13.45%133.33%
Total29100.00%3100.00%

static const struct file_operations idedisk_st_proc_fops = { .owner = THIS_MODULE, .open = idedisk_st_proc_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; ide_proc_entry_t ide_disk_proc[] = { { "cache", S_IFREG|S_IRUGO, &idedisk_cache_proc_fops }, { "capacity", S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops }, { "geometry", S_IFREG|S_IRUGO, &ide_geometry_proc_fops }, { "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops }, { "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops }, {} }; ide_devset_rw_field(bios_cyl, bios_cyl); ide_devset_rw_field(bios_head, bios_head); ide_devset_rw_field(bios_sect, bios_sect); ide_devset_rw_field(failures, failures); ide_devset_rw_field(lun, lun); ide_devset_rw_field(max_failures, max_failures); const struct ide_proc_devset ide_disk_settings[] = { IDE_PROC_DEVSET(acoustic, 0, 254), IDE_PROC_DEVSET(address, 0, 2), IDE_PROC_DEVSET(bios_cyl, 0, 65535), IDE_PROC_DEVSET(bios_head, 0, 255), IDE_PROC_DEVSET(bios_sect, 0, 63), IDE_PROC_DEVSET(failures, 0, 65535), IDE_PROC_DEVSET(lun, 0, 7), IDE_PROC_DEVSET(max_failures, 0, 65535), IDE_PROC_DEVSET(multcount, 0, 16), IDE_PROC_DEVSET(nowerr, 0, 1), IDE_PROC_DEVSET(wcache, 0, 1), { NULL }, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Bartlomiej Zolnierkiewicz57958.84%541.67%
Alexey Dobriyan35536.08%18.33%
Sergei Shtylyov383.86%18.33%
Al Viro40.41%18.33%
Paul Gortmaker30.30%18.33%
Tejun Heo30.30%18.33%
Hannes Eder10.10%18.33%
Greg Kroah-Hartman10.10%18.33%
Total984100.00%12100.00%
Directory: drivers/ide
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