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WSL2-Linux-Kernel
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Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] tape_char: add missing compat_ptr conversion
  [S390] zcrypt: add sanity check before copy_from_user()
  [S390] unwire sys_recvmmsg again
  [S390] con3215: remove empty ioctl function
  [S390] dasd: add proper compat pointer conversion for symmetrix ioctl
  [S390] mmap: add missing compat_ptr conversion to both mmap compat syscalls
  [S390] bug: implement arch specific __WARN macro
  [S390] Move __cpu_logical_map to smp.c
  [S390] tape_block: remove ioctl function
  [S390] smp: remove volatile type quilifier from __cpu_logical_map
  [S390] smp: setup smp_processor_id early
  [S390] use helpers for rlimits
  [S390] fs3270: add missing compat ptr conversion
  [S390] vmcp: add missing compat ptr conversion
  [S390] cio: add missing compat ptr conversion
  [S390] dasd: add missing compat ptr conversion
  [S390] remove superfluous TIF_USEDFPU bit
  [S390] duplicate SIGTRAP on signal delivery.
  [S390] clear TIF_SINGLE_STEP for new process.
  [S390] fix loading of PER control registers for utrace.
This commit is contained in:
Linus Torvalds 2010-01-14 08:37:53 -08:00
Родитель 4a24eef671 c540607978
Коммит 61c39bb354
24 изменённых файлов: 137 добавлений и 160 удалений
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4
arch/s390/include/asm/bug.h
Просмотреть файл

@ -52,6 +52,10 @@
unreachable(); \
} while (0)
#define __WARN() do { \
__EMIT_BUG(BUGFLAG_WARNING); \
} while (0)
#define WARN_ON(x) ({ \
int __ret_warn_on = !!(x); \
if (__builtin_constant_p(__ret_warn_on)) { \

20
arch/s390/include/asm/sigp.h
Просмотреть файл

@ -15,11 +15,19 @@
#ifndef __SIGP__
#define __SIGP__
#include <asm/ptrace.h>
#include <asm/atomic.h>
#include <asm/system.h>
/* get real cpu address from logical cpu number */
extern volatile int __cpu_logical_map[];
extern int __cpu_logical_map[];
static inline int cpu_logical_map(int cpu)
{
#ifdef CONFIG_SMP
return __cpu_logical_map[cpu];
#else
return stap();
#endif
}
typedef enum
{
@ -79,7 +87,7 @@ signal_processor(__u16 cpu_addr, sigp_order_code order_code)
" ipm %0\n"
" srl %0,28\n"
: "=d" (ccode)
: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
: "d" (reg1), "d" (cpu_logical_map(cpu_addr)),
"a" (order_code) : "cc" , "memory");
return ccode;
}
@ -98,7 +106,7 @@ signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code)
" ipm %0\n"
" srl %0,28\n"
: "=d" (ccode)
: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
: "d" (reg1), "d" (cpu_logical_map(cpu_addr)),
"a" (order_code) : "cc" , "memory");
return ccode;
}
@ -118,7 +126,7 @@ signal_processor_ps(__u32 *statusptr, __u32 parameter, __u16 cpu_addr,
" ipm %0\n"
" srl %0,28\n"
: "=d" (ccode), "+d" (reg1)
: "d" (__cpu_logical_map[cpu_addr]), "a" (order_code)
: "d" (cpu_logical_map(cpu_addr)), "a" (order_code)
: "cc" , "memory");
*statusptr = reg1;
return ccode;

12
arch/s390/include/asm/thread_info.h
Просмотреть файл

@ -93,13 +93,12 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */
#define TIF_SECCOMP 10 /* secure computing */
#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling
TIF_NEED_RESCHED */
#define TIF_31BIT 18 /* 32bit process */
#define TIF_MEMDIE 19
#define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */
#define TIF_FREEZE 21 /* thread is freezing for suspend */
#define TIF_31BIT 17 /* 32bit process */
#define TIF_MEMDIE 18
#define TIF_RESTORE_SIGMASK 19 /* restore signal mask in do_signal() */
#define TIF_FREEZE 20 /* thread is freezing for suspend */
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
@ -112,7 +111,6 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_31BIT (1<<TIF_31BIT)
#define _TIF_FREEZE (1<<TIF_FREEZE)

6
arch/s390/include/asm/unistd.h
Просмотреть файл

@ -269,8 +269,7 @@
#define __NR_pwritev 329
#define __NR_rt_tgsigqueueinfo 330
#define __NR_perf_event_open 331
#define __NR_recvmmsg 332
#define NR_syscalls 333
#define NR_syscalls 332
/*
* There are some system calls that are not present on 64 bit, some
@ -377,6 +376,9 @@
#define __IGNORE_migrate_pages
#define __IGNORE_move_pages
/* Ignore system calls that are also reachable via sys_socket */
#define __IGNORE_recvmmsg
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_SYS_ALARM

41
arch/s390/kernel/compat_linux.c
Просмотреть файл

@ -616,44 +616,35 @@ asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename,
*/
struct mmap_arg_struct_emu31 {
u32 addr;
u32 len;
u32 prot;
u32 flags;
u32 fd;
u32 offset;
compat_ulong_t addr;
compat_ulong_t len;
compat_ulong_t prot;
compat_ulong_t flags;
compat_ulong_t fd;
compat_ulong_t offset;
};
asmlinkage unsigned long
old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
asmlinkage unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
{
struct mmap_arg_struct_emu31 a;
int error = -EFAULT;
if (copy_from_user(&a, arg, sizeof(a)))
goto out;
error = -EINVAL;
return -EFAULT;
if (a.offset & ~PAGE_MASK)
goto out;
error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
a.offset >> PAGE_SHIFT);
out:
return error;
return -EINVAL;
a.addr = (unsigned long) compat_ptr(a.addr);
return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
a.offset >> PAGE_SHIFT);
}
asmlinkage long
sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
asmlinkage long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
{
struct mmap_arg_struct_emu31 a;
int error = -EFAULT;
if (copy_from_user(&a, arg, sizeof(a)))
goto out;
error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
out:
return error;
return -EFAULT;
a.addr = (unsigned long) compat_ptr(a.addr);
return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
}
asmlinkage long sys32_read(unsigned int fd, char __user * buf, size_t count)

9
arch/s390/kernel/compat_wrapper.S
Просмотреть файл

@ -1853,12 +1853,3 @@ sys32_execve_wrapper:
llgtr %r3,%r3 # compat_uptr_t *
llgtr %r4,%r4 # compat_uptr_t *
jg sys32_execve # branch to system call
.globl compat_sys_recvmmsg_wrapper
compat_sys_recvmmsg_wrapper:
lgfr %r2,%r2 # int
llgtr %r3,%r3 # struct compat_mmsghdr *
llgfr %r4,%r4 # unsigned int
llgfr %r5,%r5 # unsigned int
llgtr %r6,%r6 # struct compat_timespec *
jg compat_sys_recvmmsg

3
arch/s390/kernel/process.c
Просмотреть файл

@ -153,8 +153,6 @@ void exit_thread(void)
void flush_thread(void)
{
clear_used_math();
clear_tsk_thread_flag(current, TIF_USEDFPU);
}
void release_thread(struct task_struct *dead_task)
@ -217,6 +215,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
p->thread.mm_segment = get_fs();
/* Don't copy debug registers */
memset(&p->thread.per_info, 0, sizeof(p->thread.per_info));
clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
/* Initialize per thread user and system timer values */
ti = task_thread_info(p);
ti->user_timer = 0;

8
arch/s390/kernel/ptrace.c
Просмотреть файл

@ -65,6 +65,7 @@ FixPerRegisters(struct task_struct *task)
{
struct pt_regs *regs;
per_struct *per_info;
per_cr_words cr_words;
regs = task_pt_regs(task);
per_info = (per_struct *) &task->thread.per_info;
@ -98,6 +99,13 @@ FixPerRegisters(struct task_struct *task)
per_info->control_regs.bits.storage_alt_space_ctl = 1;
else
per_info->control_regs.bits.storage_alt_space_ctl = 0;
if (task == current) {
__ctl_store(cr_words, 9, 11);
if (memcmp(&cr_words, &per_info->control_regs.words,
sizeof(cr_words)) != 0)
__ctl_load(per_info->control_regs.words, 9, 11);
}
}
void user_enable_single_step(struct task_struct *task)

8
arch/s390/kernel/setup.c
Просмотреть файл

@ -87,7 +87,6 @@ unsigned long elf_hwcap = 0;
char elf_platform[ELF_PLATFORM_SIZE];
struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS];
volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
int __initdata memory_end_set;
unsigned long __initdata memory_end;
@ -124,12 +123,6 @@ void __cpuinit cpu_init(void)
*/
get_cpu_id(&S390_lowcore.cpu_id);
/*
* Force FPU initialization:
*/
clear_thread_flag(TIF_USEDFPU);
clear_used_math();
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
BUG_ON(current->mm);
@ -855,7 +848,6 @@ setup_arch(char **cmdline_p)
setup_lowcore();
cpu_init();
__cpu_logical_map[0] = stap();
s390_init_cpu_topology();
/*

10
arch/s390/kernel/signal.c
Просмотреть файл

@ -499,19 +499,11 @@ void do_signal(struct pt_regs *regs)
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
/*
* If we would have taken a single-step trap
* for a normal instruction, act like we took
* one for the handler setup.
*/
if (current->thread.per_info.single_step)
set_thread_flag(TIF_SINGLE_STEP);
/*
* Let tracing know that we've done the handler setup.
*/
tracehook_signal_handler(signr, &info, &ka, regs,
test_thread_flag(TIF_SINGLE_STEP));
current->thread.per_info.single_step);
}
return;
}

9
arch/s390/kernel/smp.c
Просмотреть файл

@ -52,6 +52,9 @@
#include <asm/cpu.h>
#include "entry.h"
/* logical cpu to cpu address */
int __cpu_logical_map[NR_CPUS];
static struct task_struct *current_set[NR_CPUS];
static u8 smp_cpu_type;
@ -717,6 +720,12 @@ void __init smp_cpus_done(unsigned int max_cpus)
{
}
void __init smp_setup_processor_id(void)
{
S390_lowcore.cpu_nr = 0;
__cpu_logical_map[0] = stap();
}
/*
* the frequency of the profiling timer can be changed
* by writing a multiplier value into /proc/profile.

1
arch/s390/kernel/syscalls.S
Просмотреть файл

@ -340,4 +340,3 @@ SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper)
SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper)
SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo_wrapper) /* 330 */
SYSCALL(sys_perf_event_open,sys_perf_event_open,sys_perf_event_open_wrapper)
SYSCALL(sys_recvmmsg,sys_recvmmsg,compat_sys_recvmmsg_wrapper)

2
arch/s390/kernel/topology.c
Просмотреть файл

@ -114,7 +114,7 @@ static void add_cpus_to_core(struct tl_cpu *tl_cpu, struct core_info *core)
rcpu = CPU_BITS - 1 - cpu + tl_cpu->origin;
for_each_present_cpu(lcpu) {
if (__cpu_logical_map[lcpu] == rcpu) {
if (cpu_logical_map(lcpu) == rcpu) {
cpu_set(lcpu, core->mask);
smp_cpu_polarization[lcpu] = tl_cpu->pp;
}

2
arch/s390/lib/spinlock.c
Просмотреть файл

@ -34,7 +34,7 @@ static inline void _raw_yield_cpu(int cpu)
{
if (MACHINE_HAS_DIAG9C)
asm volatile("diag %0,0,0x9c"
: : "d" (__cpu_logical_map[cpu]));
: : "d" (cpu_logical_map(cpu)));
else
_raw_yield();
}

4
arch/s390/mm/mmap.c
Просмотреть файл

@ -40,7 +40,7 @@
static inline unsigned long mmap_base(void)
{
unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
unsigned long gap = rlimit(RLIMIT_STACK);
if (gap < MIN_GAP)
gap = MIN_GAP;
@ -61,7 +61,7 @@ static inline int mmap_is_legacy(void)
#endif
return sysctl_legacy_va_layout ||
(current->personality & ADDR_COMPAT_LAYOUT) ||
current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY;
rlimit(RLIMIT_STACK) == RLIM_INFINITY;
}
#ifndef CONFIG_64BIT

14
drivers/s390/block/dasd_eckd.c
Просмотреть файл

@ -23,6 +23,7 @@
#include <asm/debug.h>
#include <asm/idals.h>
#include <asm/ebcdic.h>
#include <asm/compat.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/cio.h>
@ -2844,13 +2845,16 @@ static int dasd_symm_io(struct dasd_device *device, void __user *argp)
rc = -EFAULT;
if (copy_from_user(&usrparm, argp, sizeof(usrparm)))
goto out;
#ifndef CONFIG_64BIT
/* Make sure pointers are sane even on 31 bit. */
if ((usrparm.psf_data >> 32) != 0 || (usrparm.rssd_result >> 32) != 0) {
if (is_compat_task() || sizeof(long) == 4) {
/* Make sure pointers are sane even on 31 bit. */
rc = -EINVAL;
goto out;
if ((usrparm.psf_data >> 32) != 0)
goto out;
if ((usrparm.rssd_result >> 32) != 0)
goto out;
usrparm.psf_data &= 0x7fffffffULL;
usrparm.rssd_result &= 0x7fffffffULL;
}
#endif
/* alloc I/O data area */
psf_data = kzalloc(usrparm.psf_data_len, GFP_KERNEL | GFP_DMA);
rssd_result = kzalloc(usrparm.rssd_result_len, GFP_KERNEL | GFP_DMA);

14
drivers/s390/block/dasd_ioctl.c
Просмотреть файл

@ -17,7 +17,7 @@
#include <linux/fs.h>
#include <linux/blkpg.h>
#include <linux/smp_lock.h>
#include <asm/compat.h>
#include <asm/ccwdev.h>
#include <asm/cmb.h>
#include <asm/uaccess.h>
@ -358,9 +358,8 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
}
static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd,
unsigned long arg)
struct cmbdata __user *argp)
{
struct cmbdata __user *argp = (void __user *) arg;
size_t size = _IOC_SIZE(cmd);
struct cmbdata data;
int ret;
@ -376,7 +375,12 @@ dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct dasd_block *block = bdev->bd_disk->private_data;
void __user *argp = (void __user *)arg;
void __user *argp;
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (void __user *)arg;
if (!block)
return -ENODEV;
@ -414,7 +418,7 @@ dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
case BIODASDCMFDISABLE:
return disable_cmf(block->base->cdev);
case BIODASDREADALLCMB:
return dasd_ioctl_readall_cmb(block, cmd, arg);
return dasd_ioctl_readall_cmb(block, cmd, argp);
default:
/* if the discipline has an ioctl method try it. */
if (block->base->discipline->ioctl) {

17
drivers/s390/char/con3215.c
Просмотреть файл

@ -1036,22 +1036,6 @@ static void tty3215_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
/*
* Currently we don't have any io controls for 3215 ttys
*/
static int tty3215_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
if (tty->flags & (1 << TTY_IO_ERROR))
return -EIO;
switch (cmd) {
default:
return -ENOIOCTLCMD;
}
return 0;
}
/*
* Disable reading from a 3215 tty
*/
@ -1117,7 +1101,6 @@ static const struct tty_operations tty3215_ops = {
.write_room = tty3215_write_room,
.chars_in_buffer = tty3215_chars_in_buffer,
.flush_buffer = tty3215_flush_buffer,
.ioctl = tty3215_ioctl,
.throttle = tty3215_throttle,
.unthrottle = tty3215_unthrottle,
.stop = tty3215_stop,

17
drivers/s390/char/fs3270.c
Просмотреть файл

@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/smp_lock.h>
#include <asm/compat.h>
#include <asm/ccwdev.h>
#include <asm/cio.h>
#include <asm/ebcdic.h>
@ -322,6 +323,7 @@ fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *o
static long
fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
char __user *argp;
struct fs3270 *fp;
struct raw3270_iocb iocb;
int rc;
@ -329,6 +331,10 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
fp = filp->private_data;
if (!fp)
return -ENODEV;
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (char __user *)arg;
rc = 0;
mutex_lock(&fs3270_mutex);
switch (cmd) {
@ -339,10 +345,10 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
fp->write_command = arg;
break;
case TUBGETI:
rc = put_user(fp->read_command, (char __user *) arg);
rc = put_user(fp->read_command, argp);
break;
case TUBGETO:
rc = put_user(fp->write_command,(char __user *) arg);
rc = put_user(fp->write_command, argp);
break;
case TUBGETMOD:
iocb.model = fp->view.model;
@ -351,8 +357,7 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
iocb.pf_cnt = 24;
iocb.re_cnt = 20;
iocb.map = 0;
if (copy_to_user((char __user *) arg, &iocb,
sizeof(struct raw3270_iocb)))
if (copy_to_user(argp, &iocb, sizeof(struct raw3270_iocb)))
rc = -EFAULT;
break;
}
@ -511,8 +516,8 @@ static const struct file_operations fs3270_fops = {
.write = fs3270_write, /* write */
.unlocked_ioctl = fs3270_ioctl, /* ioctl */
.compat_ioctl = fs3270_ioctl, /* ioctl */
.open = fs3270_open, /* open */
.release = fs3270_close, /* release */
.open = fs3270_open, /* open */
.release = fs3270_close, /* release */
};
/*

39
drivers/s390/char/tape_block.c
Просмотреть файл

@ -46,8 +46,6 @@
*/
static int tapeblock_open(struct block_device *, fmode_t);
static int tapeblock_release(struct gendisk *, fmode_t);
static int tapeblock_ioctl(struct block_device *, fmode_t, unsigned int,
unsigned long);
static int tapeblock_medium_changed(struct gendisk *);
static int tapeblock_revalidate_disk(struct gendisk *);
@ -55,7 +53,6 @@ static const struct block_device_operations tapeblock_fops = {
.owner = THIS_MODULE,
.open = tapeblock_open,
.release = tapeblock_release,
.ioctl = tapeblock_ioctl,
.media_changed = tapeblock_medium_changed,
.revalidate_disk = tapeblock_revalidate_disk,
};
@ -415,42 +412,6 @@ tapeblock_release(struct gendisk *disk, fmode_t mode)
return 0;
}
/*
* Support of some generic block device IOCTLs.
*/
static int
tapeblock_ioctl(
struct block_device * bdev,
fmode_t mode,
unsigned int command,
unsigned long arg
) {
int rc;
int minor;
struct gendisk *disk = bdev->bd_disk;
struct tape_device *device;
rc = 0;
BUG_ON(!disk);
device = disk->private_data;
BUG_ON(!device);
minor = MINOR(bdev->bd_dev);
DBF_LH(6, "tapeblock_ioctl(0x%0x)\n", command);
DBF_LH(6, "device = %d:%d\n", tapeblock_major, minor);
switch (command) {
/* Refuse some IOCTL calls without complaining (mount). */
case 0x5310: /* CDROMMULTISESSION */
rc = -EINVAL;
break;
default:
rc = -EINVAL;
}
return rc;
}
/*
* Initialize block device frontend.
*/

18
drivers/s390/char/tape_char.c
Просмотреть файл

@ -18,6 +18,7 @@
#include <linux/proc_fs.h>
#include <linux/mtio.h>
#include <linux/smp_lock.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
@ -37,8 +38,9 @@ static ssize_t tapechar_write(struct file *, const char __user *, size_t, loff_t
static int tapechar_open(struct inode *,struct file *);
static int tapechar_release(struct inode *,struct file *);
static long tapechar_ioctl(struct file *, unsigned int, unsigned long);
static long tapechar_compat_ioctl(struct file *, unsigned int,
unsigned long);
#ifdef CONFIG_COMPAT
static long tapechar_compat_ioctl(struct file *, unsigned int, unsigned long);
#endif
static const struct file_operations tape_fops =
{
@ -46,7 +48,9 @@ static const struct file_operations tape_fops =
.read = tapechar_read,
.write = tapechar_write,
.unlocked_ioctl = tapechar_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = tapechar_compat_ioctl,
#endif
.open = tapechar_open,
.release = tapechar_release,
};
@ -457,15 +461,22 @@ tapechar_ioctl(struct file *filp, unsigned int no, unsigned long data)
return rc;
}
#ifdef CONFIG_COMPAT
static long
tapechar_compat_ioctl(struct file *filp, unsigned int no, unsigned long data)
{
struct tape_device *device = filp->private_data;
int rval = -ENOIOCTLCMD;
unsigned long argp;
/* The 'arg' argument of any ioctl function may only be used for
* pointers because of the compat pointer conversion.
* Consider this when adding new ioctls.
*/
argp = (unsigned long) compat_ptr(data);
if (device->discipline->ioctl_fn) {
mutex_lock(&device->mutex);
rval = device->discipline->ioctl_fn(device, no, data);
rval = device->discipline->ioctl_fn(device, no, argp);
mutex_unlock(&device->mutex);
if (rval == -EINVAL)
rval = -ENOIOCTLCMD;
@ -473,6 +484,7 @@ tapechar_compat_ioctl(struct file *filp, unsigned int no, unsigned long data)
return rval;
}
#endif /* CONFIG_COMPAT */
/*
* Initialize character device frontend.

12
drivers/s390/char/vmcp.c
Просмотреть файл

@ -19,6 +19,7 @@
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <asm/compat.h>
#include <asm/cpcmd.h>
#include <asm/debug.h>
#include <asm/uaccess.h>
@ -139,21 +140,26 @@ vmcp_write(struct file *file, const char __user *buff, size_t count,
static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct vmcp_session *session;
int __user *argp;
int temp;
session = (struct vmcp_session *)file->private_data;
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (int __user *)arg;
if (mutex_lock_interruptible(&session->mutex))
return -ERESTARTSYS;
switch (cmd) {
case VMCP_GETCODE:
temp = session->resp_code;
mutex_unlock(&session->mutex);
return put_user(temp, (int __user *)arg);
return put_user(temp, argp);
case VMCP_SETBUF:
free_pages((unsigned long)session->response,
get_order(session->bufsize));
session->response=NULL;
temp = get_user(session->bufsize, (int __user *)arg);
temp = get_user(session->bufsize, argp);
if (get_order(session->bufsize) > 8) {
session->bufsize = PAGE_SIZE;
temp = -EINVAL;
@ -163,7 +169,7 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
case VMCP_GETSIZE:
temp = session->resp_size;
mutex_unlock(&session->mutex);
return put_user(temp, (int __user *)arg);
return put_user(temp, argp);
default:
mutex_unlock(&session->mutex);
return -ENOIOCTLCMD;

23
drivers/s390/cio/chsc_sch.c
Просмотреть файл

@ -12,6 +12,7 @@
#include <linux/uaccess.h>
#include <linux/miscdevice.h>
#include <asm/compat.h>
#include <asm/cio.h>
#include <asm/chsc.h>
#include <asm/isc.h>
@ -770,24 +771,30 @@ out_free:
static long chsc_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
void __user *argp;
CHSC_MSG(2, "chsc_ioctl called, cmd=%x\n", cmd);
if (is_compat_task())
argp = compat_ptr(arg);
else
argp = (void __user *)arg;
switch (cmd) {
case CHSC_START:
return chsc_ioctl_start((void __user *)arg);
return chsc_ioctl_start(argp);
case CHSC_INFO_CHANNEL_PATH:
return chsc_ioctl_info_channel_path((void __user *)arg);
return chsc_ioctl_info_channel_path(argp);
case CHSC_INFO_CU:
return chsc_ioctl_info_cu((void __user *)arg);
return chsc_ioctl_info_cu(argp);
case CHSC_INFO_SCH_CU:
return chsc_ioctl_info_sch_cu((void __user *)arg);
return chsc_ioctl_info_sch_cu(argp);
case CHSC_INFO_CI:
return chsc_ioctl_conf_info((void __user *)arg);
return chsc_ioctl_conf_info(argp);
case CHSC_INFO_CCL:
return chsc_ioctl_conf_comp_list((void __user *)arg);
return chsc_ioctl_conf_comp_list(argp);
case CHSC_INFO_CPD:
return chsc_ioctl_chpd((void __user *)arg);
return chsc_ioctl_chpd(argp);
case CHSC_INFO_DCAL:
return chsc_ioctl_dcal((void __user *)arg);
return chsc_ioctl_dcal(argp);
default: /* unknown ioctl number */
return -ENOIOCTLCMD;
}

4
drivers/s390/crypto/zcrypt_api.c
Просмотреть файл

@ -393,10 +393,12 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
* u_mult_inv > 128 bytes.
*/
if (copied == 0) {
int len;
unsigned int len;
spin_unlock_bh(&zcrypt_device_lock);
/* len is max 256 / 2 - 120 = 8 */
len = crt->inputdatalength / 2 - 120;
if (len > sizeof(z1))
return -EFAULT;
z1 = z2 = z3 = 0;
if (copy_from_user(&z1, crt->np_prime, len) ||
copy_from_user(&z2, crt->bp_key, len) ||