summaryrefslogtreecommitdiff
path: root/ANDROID_3.4.5/arch/s390/hypfs
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/s390/hypfs
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/hypfs')
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/Makefile7
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/hypfs.h72
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/hypfs_dbfs.c116
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/hypfs_diag.c778
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c283
-rw-r--r--ANDROID_3.4.5/arch/s390/hypfs/inode.c515
6 files changed, 0 insertions, 1771 deletions
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/Makefile b/ANDROID_3.4.5/arch/s390/hypfs/Makefile
deleted file mode 100644
index 2e671d50..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for the linux hypfs filesystem routines.
-#
-
-obj-$(CONFIG_S390_HYPFS_FS) += s390_hypfs.o
-
-s390_hypfs-objs := inode.o hypfs_diag.o hypfs_vm.o hypfs_dbfs.o
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/hypfs.h b/ANDROID_3.4.5/arch/s390/hypfs/hypfs.h
deleted file mode 100644
index d9df5a06..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/hypfs.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * arch/s390/hypfs/hypfs.h
- * Hypervisor filesystem for Linux on s390.
- *
- * Copyright (C) IBM Corp. 2006
- * Author(s): Michael Holzheu <holzheu@de.ibm.com>
- */
-
-#ifndef _HYPFS_H_
-#define _HYPFS_H_
-
-#include <linux/fs.h>
-#include <linux/types.h>
-#include <linux/debugfs.h>
-#include <linux/workqueue.h>
-#include <linux/kref.h>
-
-#define REG_FILE_MODE 0440
-#define UPDATE_FILE_MODE 0220
-#define DIR_MODE 0550
-
-extern struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
- const char *name);
-
-extern struct dentry *hypfs_create_u64(struct super_block *sb,
- struct dentry *dir, const char *name,
- __u64 value);
-
-extern struct dentry *hypfs_create_str(struct super_block *sb,
- struct dentry *dir, const char *name,
- char *string);
-
-/* LPAR Hypervisor */
-extern int hypfs_diag_init(void);
-extern void hypfs_diag_exit(void);
-extern int hypfs_diag_create_files(struct super_block *sb, struct dentry *root);
-
-/* VM Hypervisor */
-extern int hypfs_vm_init(void);
-extern void hypfs_vm_exit(void);
-extern int hypfs_vm_create_files(struct super_block *sb, struct dentry *root);
-
-/* debugfs interface */
-struct hypfs_dbfs_file;
-
-struct hypfs_dbfs_data {
- void *buf;
- void *buf_free_ptr;
- size_t size;
- struct hypfs_dbfs_file *dbfs_file;
- struct kref kref;
-};
-
-struct hypfs_dbfs_file {
- const char *name;
- int (*data_create)(void **data, void **data_free_ptr,
- size_t *size);
- void (*data_free)(const void *buf_free_ptr);
-
- /* Private data for hypfs_dbfs.c */
- struct hypfs_dbfs_data *data;
- struct delayed_work data_free_work;
- struct mutex lock;
- struct dentry *dentry;
-};
-
-extern int hypfs_dbfs_init(void);
-extern void hypfs_dbfs_exit(void);
-extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
-extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
-
-#endif /* _HYPFS_H_ */
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_dbfs.c b/ANDROID_3.4.5/arch/s390/hypfs/hypfs_dbfs.c
deleted file mode 100644
index b478013b..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_dbfs.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Hypervisor filesystem for Linux on s390 - debugfs interface
- *
- * Copyright (C) IBM Corp. 2010
- * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
- */
-
-#include <linux/slab.h>
-#include "hypfs.h"
-
-static struct dentry *dbfs_dir;
-
-static struct hypfs_dbfs_data *hypfs_dbfs_data_alloc(struct hypfs_dbfs_file *f)
-{
- struct hypfs_dbfs_data *data;
-
- data = kmalloc(sizeof(*data), GFP_KERNEL);
- if (!data)
- return NULL;
- kref_init(&data->kref);
- data->dbfs_file = f;
- return data;
-}
-
-static void hypfs_dbfs_data_free(struct kref *kref)
-{
- struct hypfs_dbfs_data *data;
-
- data = container_of(kref, struct hypfs_dbfs_data, kref);
- data->dbfs_file->data_free(data->buf_free_ptr);
- kfree(data);
-}
-
-static void data_free_delayed(struct work_struct *work)
-{
- struct hypfs_dbfs_data *data;
- struct hypfs_dbfs_file *df;
-
- df = container_of(work, struct hypfs_dbfs_file, data_free_work.work);
- mutex_lock(&df->lock);
- data = df->data;
- df->data = NULL;
- mutex_unlock(&df->lock);
- kref_put(&data->kref, hypfs_dbfs_data_free);
-}
-
-static ssize_t dbfs_read(struct file *file, char __user *buf,
- size_t size, loff_t *ppos)
-{
- struct hypfs_dbfs_data *data;
- struct hypfs_dbfs_file *df;
- ssize_t rc;
-
- if (*ppos != 0)
- return 0;
-
- df = file->f_path.dentry->d_inode->i_private;
- mutex_lock(&df->lock);
- if (!df->data) {
- data = hypfs_dbfs_data_alloc(df);
- if (!data) {
- mutex_unlock(&df->lock);
- return -ENOMEM;
- }
- rc = df->data_create(&data->buf, &data->buf_free_ptr,
- &data->size);
- if (rc) {
- mutex_unlock(&df->lock);
- kfree(data);
- return rc;
- }
- df->data = data;
- schedule_delayed_work(&df->data_free_work, HZ);
- }
- data = df->data;
- kref_get(&data->kref);
- mutex_unlock(&df->lock);
-
- rc = simple_read_from_buffer(buf, size, ppos, data->buf, data->size);
- kref_put(&data->kref, hypfs_dbfs_data_free);
- return rc;
-}
-
-static const struct file_operations dbfs_ops = {
- .read = dbfs_read,
- .llseek = no_llseek,
-};
-
-int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
-{
- df->dentry = debugfs_create_file(df->name, 0400, dbfs_dir, df,
- &dbfs_ops);
- if (IS_ERR(df->dentry))
- return PTR_ERR(df->dentry);
- mutex_init(&df->lock);
- INIT_DELAYED_WORK(&df->data_free_work, data_free_delayed);
- return 0;
-}
-
-void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
-{
- debugfs_remove(df->dentry);
-}
-
-int hypfs_dbfs_init(void)
-{
- dbfs_dir = debugfs_create_dir("s390_hypfs", NULL);
- if (IS_ERR(dbfs_dir))
- return PTR_ERR(dbfs_dir);
- return 0;
-}
-
-void hypfs_dbfs_exit(void)
-{
- debugfs_remove(dbfs_dir);
-}
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_diag.c b/ANDROID_3.4.5/arch/s390/hypfs/hypfs_diag.c
deleted file mode 100644
index 74c8f5e7..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_diag.c
+++ /dev/null
@@ -1,778 +0,0 @@
-/*
- * arch/s390/hypfs/hypfs_diag.c
- * Hypervisor filesystem for Linux on s390. Diag 204 and 224
- * implementation.
- *
- * Copyright IBM Corp. 2006, 2008
- * Author(s): Michael Holzheu <holzheu@de.ibm.com>
- */
-
-#define KMSG_COMPONENT "hypfs"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <asm/ebcdic.h>
-#include "hypfs.h"
-
-#define LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */
-#define CPU_NAME_LEN 16 /* type name len of cpus in diag224 name table */
-#define TMP_SIZE 64 /* size of temporary buffers */
-
-#define DBFS_D204_HDR_VERSION 0
-
-/* diag 204 subcodes */
-enum diag204_sc {
- SUBC_STIB4 = 4,
- SUBC_RSI = 5,
- SUBC_STIB6 = 6,
- SUBC_STIB7 = 7
-};
-
-/* The two available diag 204 data formats */
-enum diag204_format {
- INFO_SIMPLE = 0,
- INFO_EXT = 0x00010000
-};
-
-/* bit is set in flags, when physical cpu info is included in diag 204 data */
-#define LPAR_PHYS_FLG 0x80
-
-static char *diag224_cpu_names; /* diag 224 name table */
-static enum diag204_sc diag204_store_sc; /* used subcode for store */
-static enum diag204_format diag204_info_type; /* used diag 204 data format */
-
-static void *diag204_buf; /* 4K aligned buffer for diag204 data */
-static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */
-static int diag204_buf_pages; /* number of pages for diag204 data */
-
-static struct dentry *dbfs_d204_file;
-
-/*
- * DIAG 204 data structures and member access functions.
- *
- * Since we have two different diag 204 data formats for old and new s390
- * machines, we do not access the structs directly, but use getter functions for
- * each struct member instead. This should make the code more readable.
- */
-
-/* Time information block */
-
-struct info_blk_hdr {
- __u8 npar;
- __u8 flags;
- __u16 tslice;
- __u16 phys_cpus;
- __u16 this_part;
- __u64 curtod;
-} __attribute__ ((packed));
-
-struct x_info_blk_hdr {
- __u8 npar;
- __u8 flags;
- __u16 tslice;
- __u16 phys_cpus;
- __u16 this_part;
- __u64 curtod1;
- __u64 curtod2;
- char reserved[40];
-} __attribute__ ((packed));
-
-static inline int info_blk_hdr__size(enum diag204_format type)
-{
- if (type == INFO_SIMPLE)
- return sizeof(struct info_blk_hdr);
- else /* INFO_EXT */
- return sizeof(struct x_info_blk_hdr);
-}
-
-static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct info_blk_hdr *)hdr)->npar;
- else /* INFO_EXT */
- return ((struct x_info_blk_hdr *)hdr)->npar;
-}
-
-static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct info_blk_hdr *)hdr)->flags;
- else /* INFO_EXT */
- return ((struct x_info_blk_hdr *)hdr)->flags;
-}
-
-static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct info_blk_hdr *)hdr)->phys_cpus;
- else /* INFO_EXT */
- return ((struct x_info_blk_hdr *)hdr)->phys_cpus;
-}
-
-/* Partition header */
-
-struct part_hdr {
- __u8 pn;
- __u8 cpus;
- char reserved[6];
- char part_name[LPAR_NAME_LEN];
-} __attribute__ ((packed));
-
-struct x_part_hdr {
- __u8 pn;
- __u8 cpus;
- __u8 rcpus;
- __u8 pflag;
- __u32 mlu;
- char part_name[LPAR_NAME_LEN];
- char lpc_name[8];
- char os_name[8];
- __u64 online_cs;
- __u64 online_es;
- __u8 upid;
- char reserved1[3];
- __u32 group_mlu;
- char group_name[8];
- char reserved2[32];
-} __attribute__ ((packed));
-
-static inline int part_hdr__size(enum diag204_format type)
-{
- if (type == INFO_SIMPLE)
- return sizeof(struct part_hdr);
- else /* INFO_EXT */
- return sizeof(struct x_part_hdr);
-}
-
-static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct part_hdr *)hdr)->cpus;
- else /* INFO_EXT */
- return ((struct x_part_hdr *)hdr)->rcpus;
-}
-
-static inline void part_hdr__part_name(enum diag204_format type, void *hdr,
- char *name)
-{
- if (type == INFO_SIMPLE)
- memcpy(name, ((struct part_hdr *)hdr)->part_name,
- LPAR_NAME_LEN);
- else /* INFO_EXT */
- memcpy(name, ((struct x_part_hdr *)hdr)->part_name,
- LPAR_NAME_LEN);
- EBCASC(name, LPAR_NAME_LEN);
- name[LPAR_NAME_LEN] = 0;
- strim(name);
-}
-
-struct cpu_info {
- __u16 cpu_addr;
- char reserved1[2];
- __u8 ctidx;
- __u8 cflag;
- __u16 weight;
- __u64 acc_time;
- __u64 lp_time;
-} __attribute__ ((packed));
-
-struct x_cpu_info {
- __u16 cpu_addr;
- char reserved1[2];
- __u8 ctidx;
- __u8 cflag;
- __u16 weight;
- __u64 acc_time;
- __u64 lp_time;
- __u16 min_weight;
- __u16 cur_weight;
- __u16 max_weight;
- char reseved2[2];
- __u64 online_time;
- __u64 wait_time;
- __u32 pma_weight;
- __u32 polar_weight;
- char reserved3[40];
-} __attribute__ ((packed));
-
-/* CPU info block */
-
-static inline int cpu_info__size(enum diag204_format type)
-{
- if (type == INFO_SIMPLE)
- return sizeof(struct cpu_info);
- else /* INFO_EXT */
- return sizeof(struct x_cpu_info);
-}
-
-static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct cpu_info *)hdr)->ctidx;
- else /* INFO_EXT */
- return ((struct x_cpu_info *)hdr)->ctidx;
-}
-
-static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct cpu_info *)hdr)->cpu_addr;
- else /* INFO_EXT */
- return ((struct x_cpu_info *)hdr)->cpu_addr;
-}
-
-static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct cpu_info *)hdr)->acc_time;
- else /* INFO_EXT */
- return ((struct x_cpu_info *)hdr)->acc_time;
-}
-
-static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct cpu_info *)hdr)->lp_time;
- else /* INFO_EXT */
- return ((struct x_cpu_info *)hdr)->lp_time;
-}
-
-static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return 0; /* online_time not available in simple info */
- else /* INFO_EXT */
- return ((struct x_cpu_info *)hdr)->online_time;
-}
-
-/* Physical header */
-
-struct phys_hdr {
- char reserved1[1];
- __u8 cpus;
- char reserved2[6];
- char mgm_name[8];
-} __attribute__ ((packed));
-
-struct x_phys_hdr {
- char reserved1[1];
- __u8 cpus;
- char reserved2[6];
- char mgm_name[8];
- char reserved3[80];
-} __attribute__ ((packed));
-
-static inline int phys_hdr__size(enum diag204_format type)
-{
- if (type == INFO_SIMPLE)
- return sizeof(struct phys_hdr);
- else /* INFO_EXT */
- return sizeof(struct x_phys_hdr);
-}
-
-static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct phys_hdr *)hdr)->cpus;
- else /* INFO_EXT */
- return ((struct x_phys_hdr *)hdr)->cpus;
-}
-
-/* Physical CPU info block */
-
-struct phys_cpu {
- __u16 cpu_addr;
- char reserved1[2];
- __u8 ctidx;
- char reserved2[3];
- __u64 mgm_time;
- char reserved3[8];
-} __attribute__ ((packed));
-
-struct x_phys_cpu {
- __u16 cpu_addr;
- char reserved1[2];
- __u8 ctidx;
- char reserved2[3];
- __u64 mgm_time;
- char reserved3[80];
-} __attribute__ ((packed));
-
-static inline int phys_cpu__size(enum diag204_format type)
-{
- if (type == INFO_SIMPLE)
- return sizeof(struct phys_cpu);
- else /* INFO_EXT */
- return sizeof(struct x_phys_cpu);
-}
-
-static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct phys_cpu *)hdr)->cpu_addr;
- else /* INFO_EXT */
- return ((struct x_phys_cpu *)hdr)->cpu_addr;
-}
-
-static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct phys_cpu *)hdr)->mgm_time;
- else /* INFO_EXT */
- return ((struct x_phys_cpu *)hdr)->mgm_time;
-}
-
-static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr)
-{
- if (type == INFO_SIMPLE)
- return ((struct phys_cpu *)hdr)->ctidx;
- else /* INFO_EXT */
- return ((struct x_phys_cpu *)hdr)->ctidx;
-}
-
-/* Diagnose 204 functions */
-
-static int diag204(unsigned long subcode, unsigned long size, void *addr)
-{
- register unsigned long _subcode asm("0") = subcode;
- register unsigned long _size asm("1") = size;
-
- asm volatile(
- " diag %2,%0,0x204\n"
- "0:\n"
- EX_TABLE(0b,0b)
- : "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
- if (_subcode)
- return -1;
- return _size;
-}
-
-/*
- * For the old diag subcode 4 with simple data format we have to use real
- * memory. If we use subcode 6 or 7 with extended data format, we can (and
- * should) use vmalloc, since we need a lot of memory in that case. Currently
- * up to 93 pages!
- */
-
-static void diag204_free_buffer(void)
-{
- if (!diag204_buf)
- return;
- if (diag204_buf_vmalloc) {
- vfree(diag204_buf_vmalloc);
- diag204_buf_vmalloc = NULL;
- } else {
- free_pages((unsigned long) diag204_buf, 0);
- }
- diag204_buf = NULL;
-}
-
-static void *page_align_ptr(void *ptr)
-{
- return (void *) PAGE_ALIGN((unsigned long) ptr);
-}
-
-static void *diag204_alloc_vbuf(int pages)
-{
- /* The buffer has to be page aligned! */
- diag204_buf_vmalloc = vmalloc(PAGE_SIZE * (pages + 1));
- if (!diag204_buf_vmalloc)
- return ERR_PTR(-ENOMEM);
- diag204_buf = page_align_ptr(diag204_buf_vmalloc);
- diag204_buf_pages = pages;
- return diag204_buf;
-}
-
-static void *diag204_alloc_rbuf(void)
-{
- diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
- if (!diag204_buf)
- return ERR_PTR(-ENOMEM);
- diag204_buf_pages = 1;
- return diag204_buf;
-}
-
-static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
-{
- if (diag204_buf) {
- *pages = diag204_buf_pages;
- return diag204_buf;
- }
- if (fmt == INFO_SIMPLE) {
- *pages = 1;
- return diag204_alloc_rbuf();
- } else {/* INFO_EXT */
- *pages = diag204((unsigned long)SUBC_RSI |
- (unsigned long)INFO_EXT, 0, NULL);
- if (*pages <= 0)
- return ERR_PTR(-ENOSYS);
- else
- return diag204_alloc_vbuf(*pages);
- }
-}
-
-/*
- * diag204_probe() has to find out, which type of diagnose 204 implementation
- * we have on our machine. Currently there are three possible scanarios:
- * - subcode 4 + simple data format (only one page)
- * - subcode 4-6 + extended data format
- * - subcode 4-7 + extended data format
- *
- * Subcode 5 is used to retrieve the size of the data, provided by subcodes
- * 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition
- * to subcode 6 it provides also information about secondary cpus.
- * In order to get as much information as possible, we first try
- * subcode 7, then 6 and if both fail, we use subcode 4.
- */
-
-static int diag204_probe(void)
-{
- void *buf;
- int pages, rc;
-
- buf = diag204_get_buffer(INFO_EXT, &pages);
- if (!IS_ERR(buf)) {
- if (diag204((unsigned long)SUBC_STIB7 |
- (unsigned long)INFO_EXT, pages, buf) >= 0) {
- diag204_store_sc = SUBC_STIB7;
- diag204_info_type = INFO_EXT;
- goto out;
- }
- if (diag204((unsigned long)SUBC_STIB6 |
- (unsigned long)INFO_EXT, pages, buf) >= 0) {
- diag204_store_sc = SUBC_STIB6;
- diag204_info_type = INFO_EXT;
- goto out;
- }
- diag204_free_buffer();
- }
-
- /* subcodes 6 and 7 failed, now try subcode 4 */
-
- buf = diag204_get_buffer(INFO_SIMPLE, &pages);
- if (IS_ERR(buf)) {
- rc = PTR_ERR(buf);
- goto fail_alloc;
- }
- if (diag204((unsigned long)SUBC_STIB4 |
- (unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
- diag204_store_sc = SUBC_STIB4;
- diag204_info_type = INFO_SIMPLE;
- goto out;
- } else {
- rc = -ENOSYS;
- goto fail_store;
- }
-out:
- rc = 0;
-fail_store:
- diag204_free_buffer();
-fail_alloc:
- return rc;
-}
-
-static int diag204_do_store(void *buf, int pages)
-{
- int rc;
-
- rc = diag204((unsigned long) diag204_store_sc |
- (unsigned long) diag204_info_type, pages, buf);
- return rc < 0 ? -ENOSYS : 0;
-}
-
-static void *diag204_store(void)
-{
- void *buf;
- int pages, rc;
-
- buf = diag204_get_buffer(diag204_info_type, &pages);
- if (IS_ERR(buf))
- goto out;
- rc = diag204_do_store(buf, pages);
- if (rc)
- return ERR_PTR(rc);
-out:
- return buf;
-}
-
-/* Diagnose 224 functions */
-
-static int diag224(void *ptr)
-{
- int rc = -EOPNOTSUPP;
-
- asm volatile(
- " diag %1,%2,0x224\n"
- "0: lhi %0,0x0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "+d" (rc) :"d" (0), "d" (ptr) : "memory");
- return rc;
-}
-
-static int diag224_get_name_table(void)
-{
- /* memory must be below 2GB */
- diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
- if (!diag224_cpu_names)
- return -ENOMEM;
- if (diag224(diag224_cpu_names)) {
- kfree(diag224_cpu_names);
- return -EOPNOTSUPP;
- }
- EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16);
- return 0;
-}
-
-static void diag224_delete_name_table(void)
-{
- kfree(diag224_cpu_names);
-}
-
-static int diag224_idx2name(int index, char *name)
-{
- memcpy(name, diag224_cpu_names + ((index + 1) * CPU_NAME_LEN),
- CPU_NAME_LEN);
- name[CPU_NAME_LEN] = 0;
- strim(name);
- return 0;
-}
-
-struct dbfs_d204_hdr {
- u64 len; /* Length of d204 buffer without header */
- u16 version; /* Version of header */
- u8 sc; /* Used subcode */
- char reserved[53];
-} __attribute__ ((packed));
-
-struct dbfs_d204 {
- struct dbfs_d204_hdr hdr; /* 64 byte header */
- char buf[]; /* d204 buffer */
-} __attribute__ ((packed));
-
-static int dbfs_d204_create(void **data, void **data_free_ptr, size_t *size)
-{
- struct dbfs_d204 *d204;
- int rc, buf_size;
- void *base;
-
- buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);
- base = vzalloc(buf_size);
- if (!base)
- return -ENOMEM;
- d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);
- rc = diag204_do_store(d204->buf, diag204_buf_pages);
- if (rc) {
- vfree(base);
- return rc;
- }
- d204->hdr.version = DBFS_D204_HDR_VERSION;
- d204->hdr.len = PAGE_SIZE * diag204_buf_pages;
- d204->hdr.sc = diag204_store_sc;
- *data = d204;
- *data_free_ptr = base;
- *size = d204->hdr.len + sizeof(struct dbfs_d204_hdr);
- return 0;
-}
-
-static struct hypfs_dbfs_file dbfs_file_d204 = {
- .name = "diag_204",
- .data_create = dbfs_d204_create,
- .data_free = vfree,
-};
-
-__init int hypfs_diag_init(void)
-{
- int rc;
-
- if (diag204_probe()) {
- pr_err("The hardware system does not support hypfs\n");
- return -ENODATA;
- }
- if (diag204_info_type == INFO_EXT) {
- rc = hypfs_dbfs_create_file(&dbfs_file_d204);
- if (rc)
- return rc;
- }
- if (MACHINE_IS_LPAR) {
- rc = diag224_get_name_table();
- if (rc) {
- pr_err("The hardware system does not provide all "
- "functions required by hypfs\n");
- debugfs_remove(dbfs_d204_file);
- return rc;
- }
- }
- return 0;
-}
-
-void hypfs_diag_exit(void)
-{
- debugfs_remove(dbfs_d204_file);
- diag224_delete_name_table();
- diag204_free_buffer();
- hypfs_dbfs_remove_file(&dbfs_file_d204);
-}
-
-/*
- * Functions to create the directory structure
- * *******************************************
- */
-
-static int hypfs_create_cpu_files(struct super_block *sb,
- struct dentry *cpus_dir, void *cpu_info)
-{
- struct dentry *cpu_dir;
- char buffer[TMP_SIZE];
- void *rc;
-
- snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type,
- cpu_info));
- cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
- rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
- cpu_info__acc_time(diag204_info_type, cpu_info) -
- cpu_info__lp_time(diag204_info_type, cpu_info));
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- rc = hypfs_create_u64(sb, cpu_dir, "cputime",
- cpu_info__lp_time(diag204_info_type, cpu_info));
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- if (diag204_info_type == INFO_EXT) {
- rc = hypfs_create_u64(sb, cpu_dir, "onlinetime",
- cpu_info__online_time(diag204_info_type,
- cpu_info));
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- }
- diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer);
- rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- return 0;
-}
-
-static void *hypfs_create_lpar_files(struct super_block *sb,
- struct dentry *systems_dir, void *part_hdr)
-{
- struct dentry *cpus_dir;
- struct dentry *lpar_dir;
- char lpar_name[LPAR_NAME_LEN + 1];
- void *cpu_info;
- int i;
-
- part_hdr__part_name(diag204_info_type, part_hdr, lpar_name);
- lpar_name[LPAR_NAME_LEN] = 0;
- lpar_dir = hypfs_mkdir(sb, systems_dir, lpar_name);
- if (IS_ERR(lpar_dir))
- return lpar_dir;
- cpus_dir = hypfs_mkdir(sb, lpar_dir, "cpus");
- if (IS_ERR(cpus_dir))
- return cpus_dir;
- cpu_info = part_hdr + part_hdr__size(diag204_info_type);
- for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) {
- int rc;
- rc = hypfs_create_cpu_files(sb, cpus_dir, cpu_info);
- if (rc)
- return ERR_PTR(rc);
- cpu_info += cpu_info__size(diag204_info_type);
- }
- return cpu_info;
-}
-
-static int hypfs_create_phys_cpu_files(struct super_block *sb,
- struct dentry *cpus_dir, void *cpu_info)
-{
- struct dentry *cpu_dir;
- char buffer[TMP_SIZE];
- void *rc;
-
- snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type,
- cpu_info));
- cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
- if (IS_ERR(cpu_dir))
- return PTR_ERR(cpu_dir);
- rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
- phys_cpu__mgm_time(diag204_info_type, cpu_info));
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer);
- rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
- if (IS_ERR(rc))
- return PTR_ERR(rc);
- return 0;
-}
-
-static void *hypfs_create_phys_files(struct super_block *sb,
- struct dentry *parent_dir, void *phys_hdr)
-{
- int i;
- void *cpu_info;
- struct dentry *cpus_dir;
-
- cpus_dir = hypfs_mkdir(sb, parent_dir, "cpus");
- if (IS_ERR(cpus_dir))
- return cpus_dir;
- cpu_info = phys_hdr + phys_hdr__size(diag204_info_type);
- for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) {
- int rc;
- rc = hypfs_create_phys_cpu_files(sb, cpus_dir, cpu_info);
- if (rc)
- return ERR_PTR(rc);
- cpu_info += phys_cpu__size(diag204_info_type);
- }
- return cpu_info;
-}
-
-int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
-{
- struct dentry *systems_dir, *hyp_dir;
- void *time_hdr, *part_hdr;
- int i, rc;
- void *buffer, *ptr;
-
- buffer = diag204_store();
- if (IS_ERR(buffer))
- return PTR_ERR(buffer);
-
- systems_dir = hypfs_mkdir(sb, root, "systems");
- if (IS_ERR(systems_dir)) {
- rc = PTR_ERR(systems_dir);
- goto err_out;
- }
- time_hdr = (struct x_info_blk_hdr *)buffer;
- part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type);
- for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) {
- part_hdr = hypfs_create_lpar_files(sb, systems_dir, part_hdr);
- if (IS_ERR(part_hdr)) {
- rc = PTR_ERR(part_hdr);
- goto err_out;
- }
- }
- if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) {
- ptr = hypfs_create_phys_files(sb, root, part_hdr);
- if (IS_ERR(ptr)) {
- rc = PTR_ERR(ptr);
- goto err_out;
- }
- }
- hyp_dir = hypfs_mkdir(sb, root, "hyp");
- if (IS_ERR(hyp_dir)) {
- rc = PTR_ERR(hyp_dir);
- goto err_out;
- }
- ptr = hypfs_create_str(sb, hyp_dir, "type", "LPAR Hypervisor");
- if (IS_ERR(ptr)) {
- rc = PTR_ERR(ptr);
- goto err_out;
- }
- rc = 0;
-
-err_out:
- return rc;
-}
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c b/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c
deleted file mode 100644
index e5479600..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/hypfs_vm.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * Hypervisor filesystem for Linux on s390. z/VM implementation.
- *
- * Copyright (C) IBM Corp. 2006
- * Author(s): Michael Holzheu <holzheu@de.ibm.com>
- */
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/vmalloc.h>
-#include <asm/ebcdic.h>
-#include <asm/timex.h>
-#include "hypfs.h"
-
-#define NAME_LEN 8
-#define DBFS_D2FC_HDR_VERSION 0
-
-static char local_guest[] = " ";
-static char all_guests[] = "* ";
-static char *guest_query;
-
-struct diag2fc_data {
- __u32 version;
- __u32 flags;
- __u64 used_cpu;
- __u64 el_time;
- __u64 mem_min_kb;
- __u64 mem_max_kb;
- __u64 mem_share_kb;
- __u64 mem_used_kb;
- __u32 pcpus;
- __u32 lcpus;
- __u32 vcpus;
- __u32 cpu_min;
- __u32 cpu_max;
- __u32 cpu_shares;
- __u32 cpu_use_samp;
- __u32 cpu_delay_samp;
- __u32 page_wait_samp;
- __u32 idle_samp;
- __u32 other_samp;
- __u32 total_samp;
- char guest_name[NAME_LEN];
-};
-
-struct diag2fc_parm_list {
- char userid[NAME_LEN];
- char aci_grp[NAME_LEN];
- __u64 addr;
- __u32 size;
- __u32 fmt;
-};
-
-static int diag2fc(int size, char* query, void *addr)
-{
- unsigned long residual_cnt;
- unsigned long rc;
- struct diag2fc_parm_list parm_list;
-
- memcpy(parm_list.userid, query, NAME_LEN);
- ASCEBC(parm_list.userid, NAME_LEN);
- parm_list.addr = (unsigned long) addr ;
- parm_list.size = size;
- parm_list.fmt = 0x02;
- memset(parm_list.aci_grp, 0x40, NAME_LEN);
- rc = -1;
-
- asm volatile(
- " diag %0,%1,0x2fc\n"
- "0:\n"
- EX_TABLE(0b,0b)
- : "=d" (residual_cnt), "+d" (rc) : "0" (&parm_list) : "memory");
-
- if ((rc != 0 ) && (rc != -2))
- return rc;
- else
- return -residual_cnt;
-}
-
-/*
- * Allocate buffer for "query" and store diag 2fc at "offset"
- */
-static void *diag2fc_store(char *query, unsigned int *count, int offset)
-{
- void *data;
- int size;
-
- do {
- size = diag2fc(0, query, NULL);
- if (size < 0)
- return ERR_PTR(-EACCES);
- data = vmalloc(size + offset);
- if (!data)
- return ERR_PTR(-ENOMEM);
- if (diag2fc(size, query, data + offset) == 0)
- break;
- vfree(data);
- } while (1);
- *count = (size / sizeof(struct diag2fc_data));
-
- return data;
-}
-
-static void diag2fc_free(const void *data)
-{
- vfree(data);
-}
-
-#define ATTRIBUTE(sb, dir, name, member) \
-do { \
- void *rc; \
- rc = hypfs_create_u64(sb, dir, name, member); \
- if (IS_ERR(rc)) \
- return PTR_ERR(rc); \
-} while(0)
-
-static int hpyfs_vm_create_guest(struct super_block *sb,
- struct dentry *systems_dir,
- struct diag2fc_data *data)
-{
- char guest_name[NAME_LEN + 1] = {};
- struct dentry *guest_dir, *cpus_dir, *samples_dir, *mem_dir;
- int dedicated_flag, capped_value;
-
- capped_value = (data->flags & 0x00000006) >> 1;
- dedicated_flag = (data->flags & 0x00000008) >> 3;
-
- /* guest dir */
- memcpy(guest_name, data->guest_name, NAME_LEN);
- EBCASC(guest_name, NAME_LEN);
- strim(guest_name);
- guest_dir = hypfs_mkdir(sb, systems_dir, guest_name);
- if (IS_ERR(guest_dir))
- return PTR_ERR(guest_dir);
- ATTRIBUTE(sb, guest_dir, "onlinetime_us", data->el_time);
-
- /* logical cpu information */
- cpus_dir = hypfs_mkdir(sb, guest_dir, "cpus");
- if (IS_ERR(cpus_dir))
- return PTR_ERR(cpus_dir);
- ATTRIBUTE(sb, cpus_dir, "cputime_us", data->used_cpu);
- ATTRIBUTE(sb, cpus_dir, "capped", capped_value);
- ATTRIBUTE(sb, cpus_dir, "dedicated", dedicated_flag);
- ATTRIBUTE(sb, cpus_dir, "count", data->vcpus);
- ATTRIBUTE(sb, cpus_dir, "weight_min", data->cpu_min);
- ATTRIBUTE(sb, cpus_dir, "weight_max", data->cpu_max);
- ATTRIBUTE(sb, cpus_dir, "weight_cur", data->cpu_shares);
-
- /* memory information */
- mem_dir = hypfs_mkdir(sb, guest_dir, "mem");
- if (IS_ERR(mem_dir))
- return PTR_ERR(mem_dir);
- ATTRIBUTE(sb, mem_dir, "min_KiB", data->mem_min_kb);
- ATTRIBUTE(sb, mem_dir, "max_KiB", data->mem_max_kb);
- ATTRIBUTE(sb, mem_dir, "used_KiB", data->mem_used_kb);
- ATTRIBUTE(sb, mem_dir, "share_KiB", data->mem_share_kb);
-
- /* samples */
- samples_dir = hypfs_mkdir(sb, guest_dir, "samples");
- if (IS_ERR(samples_dir))
- return PTR_ERR(samples_dir);
- ATTRIBUTE(sb, samples_dir, "cpu_using", data->cpu_use_samp);
- ATTRIBUTE(sb, samples_dir, "cpu_delay", data->cpu_delay_samp);
- ATTRIBUTE(sb, samples_dir, "mem_delay", data->page_wait_samp);
- ATTRIBUTE(sb, samples_dir, "idle", data->idle_samp);
- ATTRIBUTE(sb, samples_dir, "other", data->other_samp);
- ATTRIBUTE(sb, samples_dir, "total", data->total_samp);
- return 0;
-}
-
-int hypfs_vm_create_files(struct super_block *sb, struct dentry *root)
-{
- struct dentry *dir, *file;
- struct diag2fc_data *data;
- unsigned int count = 0;
- int rc, i;
-
- data = diag2fc_store(guest_query, &count, 0);
- if (IS_ERR(data))
- return PTR_ERR(data);
-
- /* Hpervisor Info */
- dir = hypfs_mkdir(sb, root, "hyp");
- if (IS_ERR(dir)) {
- rc = PTR_ERR(dir);
- goto failed;
- }
- file = hypfs_create_str(sb, dir, "type", "z/VM Hypervisor");
- if (IS_ERR(file)) {
- rc = PTR_ERR(file);
- goto failed;
- }
-
- /* physical cpus */
- dir = hypfs_mkdir(sb, root, "cpus");
- if (IS_ERR(dir)) {
- rc = PTR_ERR(dir);
- goto failed;
- }
- file = hypfs_create_u64(sb, dir, "count", data->lcpus);
- if (IS_ERR(file)) {
- rc = PTR_ERR(file);
- goto failed;
- }
-
- /* guests */
- dir = hypfs_mkdir(sb, root, "systems");
- if (IS_ERR(dir)) {
- rc = PTR_ERR(dir);
- goto failed;
- }
-
- for (i = 0; i < count; i++) {
- rc = hpyfs_vm_create_guest(sb, dir, &(data[i]));
- if (rc)
- goto failed;
- }
- diag2fc_free(data);
- return 0;
-
-failed:
- diag2fc_free(data);
- return rc;
-}
-
-struct dbfs_d2fc_hdr {
- u64 len; /* Length of d2fc buffer without header */
- u16 version; /* Version of header */
- char tod_ext[16]; /* TOD clock for d2fc */
- u64 count; /* Number of VM guests in d2fc buffer */
- char reserved[30];
-} __attribute__ ((packed));
-
-struct dbfs_d2fc {
- struct dbfs_d2fc_hdr hdr; /* 64 byte header */
- char buf[]; /* d2fc buffer */
-} __attribute__ ((packed));
-
-static int dbfs_diag2fc_create(void **data, void **data_free_ptr, size_t *size)
-{
- struct dbfs_d2fc *d2fc;
- unsigned int count;
-
- d2fc = diag2fc_store(guest_query, &count, sizeof(d2fc->hdr));
- if (IS_ERR(d2fc))
- return PTR_ERR(d2fc);
- get_clock_ext(d2fc->hdr.tod_ext);
- d2fc->hdr.len = count * sizeof(struct diag2fc_data);
- d2fc->hdr.version = DBFS_D2FC_HDR_VERSION;
- d2fc->hdr.count = count;
- memset(&d2fc->hdr.reserved, 0, sizeof(d2fc->hdr.reserved));
- *data = d2fc;
- *data_free_ptr = d2fc;
- *size = d2fc->hdr.len + sizeof(struct dbfs_d2fc_hdr);
- return 0;
-}
-
-static struct hypfs_dbfs_file dbfs_file_2fc = {
- .name = "diag_2fc",
- .data_create = dbfs_diag2fc_create,
- .data_free = diag2fc_free,
-};
-
-int hypfs_vm_init(void)
-{
- if (!MACHINE_IS_VM)
- return 0;
- if (diag2fc(0, all_guests, NULL) > 0)
- guest_query = all_guests;
- else if (diag2fc(0, local_guest, NULL) > 0)
- guest_query = local_guest;
- else
- return -EACCES;
- return hypfs_dbfs_create_file(&dbfs_file_2fc);
-}
-
-void hypfs_vm_exit(void)
-{
- if (!MACHINE_IS_VM)
- return;
- hypfs_dbfs_remove_file(&dbfs_file_2fc);
-}
diff --git a/ANDROID_3.4.5/arch/s390/hypfs/inode.c b/ANDROID_3.4.5/arch/s390/hypfs/inode.c
deleted file mode 100644
index 6a2cb560..00000000
--- a/ANDROID_3.4.5/arch/s390/hypfs/inode.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- * arch/s390/hypfs/inode.c
- * Hypervisor filesystem for Linux on s390.
- *
- * Copyright IBM Corp. 2006, 2008
- * Author(s): Michael Holzheu <holzheu@de.ibm.com>
- */
-
-#define KMSG_COMPONENT "hypfs"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/namei.h>
-#include <linux/vfs.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/time.h>
-#include <linux/parser.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/mount.h>
-#include <asm/ebcdic.h>
-#include "hypfs.h"
-
-#define HYPFS_MAGIC 0x687970 /* ASCII 'hyp' */
-#define TMP_SIZE 64 /* size of temporary buffers */
-
-static struct dentry *hypfs_create_update_file(struct super_block *sb,
- struct dentry *dir);
-
-struct hypfs_sb_info {
- uid_t uid; /* uid used for files and dirs */
- gid_t gid; /* gid used for files and dirs */
- struct dentry *update_file; /* file to trigger update */
- time_t last_update; /* last update time in secs since 1970 */
- struct mutex lock; /* lock to protect update process */
-};
-
-static const struct file_operations hypfs_file_ops;
-static struct file_system_type hypfs_type;
-static const struct super_operations hypfs_s_ops;
-
-/* start of list of all dentries, which have to be deleted on update */
-static struct dentry *hypfs_last_dentry;
-
-static void hypfs_update_update(struct super_block *sb)
-{
- struct hypfs_sb_info *sb_info = sb->s_fs_info;
- struct inode *inode = sb_info->update_file->d_inode;
-
- sb_info->last_update = get_seconds();
- inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-}
-
-/* directory tree removal functions */
-
-static void hypfs_add_dentry(struct dentry *dentry)
-{
- dentry->d_fsdata = hypfs_last_dentry;
- hypfs_last_dentry = dentry;
-}
-
-static inline int hypfs_positive(struct dentry *dentry)
-{
- return dentry->d_inode && !d_unhashed(dentry);
-}
-
-static void hypfs_remove(struct dentry *dentry)
-{
- struct dentry *parent;
-
- parent = dentry->d_parent;
- if (!parent || !parent->d_inode)
- return;
- mutex_lock(&parent->d_inode->i_mutex);
- if (hypfs_positive(dentry)) {
- if (S_ISDIR(dentry->d_inode->i_mode))
- simple_rmdir(parent->d_inode, dentry);
- else
- simple_unlink(parent->d_inode, dentry);
- }
- d_delete(dentry);
- dput(dentry);
- mutex_unlock(&parent->d_inode->i_mutex);
-}
-
-static void hypfs_delete_tree(struct dentry *root)
-{
- while (hypfs_last_dentry) {
- struct dentry *next_dentry;
- next_dentry = hypfs_last_dentry->d_fsdata;
- hypfs_remove(hypfs_last_dentry);
- hypfs_last_dentry = next_dentry;
- }
-}
-
-static struct inode *hypfs_make_inode(struct super_block *sb, umode_t mode)
-{
- struct inode *ret = new_inode(sb);
-
- if (ret) {
- struct hypfs_sb_info *hypfs_info = sb->s_fs_info;
- ret->i_mode = mode;
- ret->i_uid = hypfs_info->uid;
- ret->i_gid = hypfs_info->gid;
- ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME;
- if (S_ISDIR(mode))
- set_nlink(ret, 2);
- }
- return ret;
-}
-
-static void hypfs_evict_inode(struct inode *inode)
-{
- end_writeback(inode);
- kfree(inode->i_private);
-}
-
-static int hypfs_open(struct inode *inode, struct file *filp)
-{
- char *data = filp->f_path.dentry->d_inode->i_private;
- struct hypfs_sb_info *fs_info;
-
- if (filp->f_mode & FMODE_WRITE) {
- if (!(inode->i_mode & S_IWUGO))
- return -EACCES;
- }
- if (filp->f_mode & FMODE_READ) {
- if (!(inode->i_mode & S_IRUGO))
- return -EACCES;
- }
-
- fs_info = inode->i_sb->s_fs_info;
- if(data) {
- mutex_lock(&fs_info->lock);
- filp->private_data = kstrdup(data, GFP_KERNEL);
- if (!filp->private_data) {
- mutex_unlock(&fs_info->lock);
- return -ENOMEM;
- }
- mutex_unlock(&fs_info->lock);
- }
- return nonseekable_open(inode, filp);
-}
-
-static ssize_t hypfs_aio_read(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t offset)
-{
- char *data;
- ssize_t ret;
- struct file *filp = iocb->ki_filp;
- /* XXX: temporary */
- char __user *buf = iov[0].iov_base;
- size_t count = iov[0].iov_len;
-
- if (nr_segs != 1)
- return -EINVAL;
-
- data = filp->private_data;
- ret = simple_read_from_buffer(buf, count, &offset, data, strlen(data));
- if (ret <= 0)
- return ret;
-
- iocb->ki_pos += ret;
- file_accessed(filp);
-
- return ret;
-}
-static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t offset)
-{
- int rc;
- struct super_block *sb;
- struct hypfs_sb_info *fs_info;
- size_t count = iov_length(iov, nr_segs);
-
- sb = iocb->ki_filp->f_path.dentry->d_inode->i_sb;
- fs_info = sb->s_fs_info;
- /*
- * Currently we only allow one update per second for two reasons:
- * 1. diag 204 is VERY expensive
- * 2. If several processes do updates in parallel and then read the
- * hypfs data, the likelihood of collisions is reduced, if we restrict
- * the minimum update interval. A collision occurs, if during the
- * data gathering of one process another process triggers an update
- * If the first process wants to ensure consistent data, it has
- * to restart data collection in this case.
- */
- mutex_lock(&fs_info->lock);
- if (fs_info->last_update == get_seconds()) {
- rc = -EBUSY;
- goto out;
- }
- hypfs_delete_tree(sb->s_root);
- if (MACHINE_IS_VM)
- rc = hypfs_vm_create_files(sb, sb->s_root);
- else
- rc = hypfs_diag_create_files(sb, sb->s_root);
- if (rc) {
- pr_err("Updating the hypfs tree failed\n");
- hypfs_delete_tree(sb->s_root);
- goto out;
- }
- hypfs_update_update(sb);
- rc = count;
-out:
- mutex_unlock(&fs_info->lock);
- return rc;
-}
-
-static int hypfs_release(struct inode *inode, struct file *filp)
-{
- kfree(filp->private_data);
- return 0;
-}
-
-enum { opt_uid, opt_gid, opt_err };
-
-static const match_table_t hypfs_tokens = {
- {opt_uid, "uid=%u"},
- {opt_gid, "gid=%u"},
- {opt_err, NULL}
-};
-
-static int hypfs_parse_options(char *options, struct super_block *sb)
-{
- char *str;
- substring_t args[MAX_OPT_ARGS];
-
- if (!options)
- return 0;
- while ((str = strsep(&options, ",")) != NULL) {
- int token, option;
- struct hypfs_sb_info *hypfs_info = sb->s_fs_info;
-
- if (!*str)
- continue;
- token = match_token(str, hypfs_tokens, args);
- switch (token) {
- case opt_uid:
- if (match_int(&args[0], &option))
- return -EINVAL;
- hypfs_info->uid = option;
- break;
- case opt_gid:
- if (match_int(&args[0], &option))
- return -EINVAL;
- hypfs_info->gid = option;
- break;
- case opt_err:
- default:
- pr_err("%s is not a valid mount option\n", str);
- return -EINVAL;
- }
- }
- return 0;
-}
-
-static int hypfs_show_options(struct seq_file *s, struct dentry *root)
-{
- struct hypfs_sb_info *hypfs_info = root->d_sb->s_fs_info;
-
- seq_printf(s, ",uid=%u", hypfs_info->uid);
- seq_printf(s, ",gid=%u", hypfs_info->gid);
- return 0;
-}
-
-static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
-{
- struct inode *root_inode;
- struct dentry *root_dentry;
- int rc = 0;
- struct hypfs_sb_info *sbi;
-
- sbi = kzalloc(sizeof(struct hypfs_sb_info), GFP_KERNEL);
- if (!sbi)
- return -ENOMEM;
- mutex_init(&sbi->lock);
- sbi->uid = current_uid();
- sbi->gid = current_gid();
- sb->s_fs_info = sbi;
- sb->s_blocksize = PAGE_CACHE_SIZE;
- sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
- sb->s_magic = HYPFS_MAGIC;
- sb->s_op = &hypfs_s_ops;
- if (hypfs_parse_options(data, sb))
- return -EINVAL;
- root_inode = hypfs_make_inode(sb, S_IFDIR | 0755);
- if (!root_inode)
- return -ENOMEM;
- root_inode->i_op = &simple_dir_inode_operations;
- root_inode->i_fop = &simple_dir_operations;
- sb->s_root = root_dentry = d_make_root(root_inode);
- if (!root_dentry)
- return -ENOMEM;
- if (MACHINE_IS_VM)
- rc = hypfs_vm_create_files(sb, root_dentry);
- else
- rc = hypfs_diag_create_files(sb, root_dentry);
- if (rc)
- return rc;
- sbi->update_file = hypfs_create_update_file(sb, root_dentry);
- if (IS_ERR(sbi->update_file))
- return PTR_ERR(sbi->update_file);
- hypfs_update_update(sb);
- pr_info("Hypervisor filesystem mounted\n");
- return 0;
-}
-
-static struct dentry *hypfs_mount(struct file_system_type *fst, int flags,
- const char *devname, void *data)
-{
- return mount_single(fst, flags, data, hypfs_fill_super);
-}
-
-static void hypfs_kill_super(struct super_block *sb)
-{
- struct hypfs_sb_info *sb_info = sb->s_fs_info;
-
- if (sb->s_root)
- hypfs_delete_tree(sb->s_root);
- if (sb_info->update_file)
- hypfs_remove(sb_info->update_file);
- kfree(sb->s_fs_info);
- sb->s_fs_info = NULL;
- kill_litter_super(sb);
-}
-
-static struct dentry *hypfs_create_file(struct super_block *sb,
- struct dentry *parent, const char *name,
- char *data, umode_t mode)
-{
- struct dentry *dentry;
- struct inode *inode;
-
- mutex_lock(&parent->d_inode->i_mutex);
- dentry = lookup_one_len(name, parent, strlen(name));
- if (IS_ERR(dentry)) {
- dentry = ERR_PTR(-ENOMEM);
- goto fail;
- }
- inode = hypfs_make_inode(sb, mode);
- if (!inode) {
- dput(dentry);
- dentry = ERR_PTR(-ENOMEM);
- goto fail;
- }
- if (S_ISREG(mode)) {
- inode->i_fop = &hypfs_file_ops;
- if (data)
- inode->i_size = strlen(data);
- else
- inode->i_size = 0;
- } else if (S_ISDIR(mode)) {
- inode->i_op = &simple_dir_inode_operations;
- inode->i_fop = &simple_dir_operations;
- inc_nlink(parent->d_inode);
- } else
- BUG();
- inode->i_private = data;
- d_instantiate(dentry, inode);
- dget(dentry);
-fail:
- mutex_unlock(&parent->d_inode->i_mutex);
- return dentry;
-}
-
-struct dentry *hypfs_mkdir(struct super_block *sb, struct dentry *parent,
- const char *name)
-{
- struct dentry *dentry;
-
- dentry = hypfs_create_file(sb, parent, name, NULL, S_IFDIR | DIR_MODE);
- if (IS_ERR(dentry))
- return dentry;
- hypfs_add_dentry(dentry);
- return dentry;
-}
-
-static struct dentry *hypfs_create_update_file(struct super_block *sb,
- struct dentry *dir)
-{
- struct dentry *dentry;
-
- dentry = hypfs_create_file(sb, dir, "update", NULL,
- S_IFREG | UPDATE_FILE_MODE);
- /*
- * We do not put the update file on the 'delete' list with
- * hypfs_add_dentry(), since it should not be removed when the tree
- * is updated.
- */
- return dentry;
-}
-
-struct dentry *hypfs_create_u64(struct super_block *sb, struct dentry *dir,
- const char *name, __u64 value)
-{
- char *buffer;
- char tmp[TMP_SIZE];
- struct dentry *dentry;
-
- snprintf(tmp, TMP_SIZE, "%llu\n", (unsigned long long int)value);
- buffer = kstrdup(tmp, GFP_KERNEL);
- if (!buffer)
- return ERR_PTR(-ENOMEM);
- dentry =
- hypfs_create_file(sb, dir, name, buffer, S_IFREG | REG_FILE_MODE);
- if (IS_ERR(dentry)) {
- kfree(buffer);
- return ERR_PTR(-ENOMEM);
- }
- hypfs_add_dentry(dentry);
- return dentry;
-}
-
-struct dentry *hypfs_create_str(struct super_block *sb, struct dentry *dir,
- const char *name, char *string)
-{
- char *buffer;
- struct dentry *dentry;
-
- buffer = kmalloc(strlen(string) + 2, GFP_KERNEL);
- if (!buffer)
- return ERR_PTR(-ENOMEM);
- sprintf(buffer, "%s\n", string);
- dentry =
- hypfs_create_file(sb, dir, name, buffer, S_IFREG | REG_FILE_MODE);
- if (IS_ERR(dentry)) {
- kfree(buffer);
- return ERR_PTR(-ENOMEM);
- }
- hypfs_add_dentry(dentry);
- return dentry;
-}
-
-static const struct file_operations hypfs_file_ops = {
- .open = hypfs_open,
- .release = hypfs_release,
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = hypfs_aio_read,
- .aio_write = hypfs_aio_write,
- .llseek = no_llseek,
-};
-
-static struct file_system_type hypfs_type = {
- .owner = THIS_MODULE,
- .name = "s390_hypfs",
- .mount = hypfs_mount,
- .kill_sb = hypfs_kill_super
-};
-
-static const struct super_operations hypfs_s_ops = {
- .statfs = simple_statfs,
- .evict_inode = hypfs_evict_inode,
- .show_options = hypfs_show_options,
-};
-
-static struct kobject *s390_kobj;
-
-static int __init hypfs_init(void)
-{
- int rc;
-
- rc = hypfs_dbfs_init();
- if (rc)
- return rc;
- if (hypfs_diag_init()) {
- rc = -ENODATA;
- goto fail_dbfs_exit;
- }
- if (hypfs_vm_init()) {
- rc = -ENODATA;
- goto fail_hypfs_diag_exit;
- }
- s390_kobj = kobject_create_and_add("s390", hypervisor_kobj);
- if (!s390_kobj) {
- rc = -ENOMEM;
- goto fail_hypfs_vm_exit;
- }
- rc = register_filesystem(&hypfs_type);
- if (rc)
- goto fail_filesystem;
- return 0;
-
-fail_filesystem:
- kobject_put(s390_kobj);
-fail_hypfs_vm_exit:
- hypfs_vm_exit();
-fail_hypfs_diag_exit:
- hypfs_diag_exit();
-fail_dbfs_exit:
- hypfs_dbfs_exit();
- pr_err("Initialization of hypfs failed with rc=%i\n", rc);
- return rc;
-}
-
-static void __exit hypfs_exit(void)
-{
- hypfs_diag_exit();
- hypfs_vm_exit();
- hypfs_dbfs_exit();
- unregister_filesystem(&hypfs_type);
- kobject_put(s390_kobj);
-}
-
-module_init(hypfs_init)
-module_exit(hypfs_exit)
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Michael Holzheu <holzheu@de.ibm.com>");
-MODULE_DESCRIPTION("s390 Hypervisor Filesystem");