if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
-
pagefault_disable();
ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval);
pagefault_enable();
static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
u32 oldval, u32 newval)
{
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
-
return uaccess.futex_atomic_cmpxchg(uval, uaddr, oldval, newval);
}
#define _REGION3_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_INV)
#define _REGION3_ENTRY_LARGE 0x400 /* RTTE-format control, large page */
+#define _REGION3_ENTRY_RO 0x200 /* page protection bit */
+#define _REGION3_ENTRY_CO 0x100 /* change-recording override */
/* Bits in the segment table entry */
#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL/* segment table origin */
copy_to_user(void __user *to, const void *from, unsigned long n)
{
might_fault();
- if (access_ok(VERIFY_WRITE, to, n))
- n = __copy_to_user(to, from, n);
- return n;
+ return __copy_to_user(to, from, n);
}
/**
copy_from_user_overflow();
return n;
}
- if (access_ok(VERIFY_READ, from, n))
- n = __copy_from_user(to, from, n);
- else
- memset(to, 0, n);
- return n;
+ return __copy_from_user(to, from, n);
}
static inline unsigned long __must_check
copy_in_user(void __user *to, const void __user *from, unsigned long n)
{
might_fault();
- if (__access_ok(from,n) && __access_ok(to,n))
- n = __copy_in_user(to, from, n);
- return n;
+ return __copy_in_user(to, from, n);
}
/*
static inline long __must_check
strncpy_from_user(char *dst, const char __user *src, long count)
{
- long res = -EFAULT;
might_fault();
- if (access_ok(VERIFY_READ, src, 1))
- res = uaccess.strncpy_from_user(count, src, dst);
- return res;
+ return uaccess.strncpy_from_user(count, src, dst);
}
static inline unsigned long
clear_user(void __user *to, unsigned long n)
{
might_fault();
- if (access_ok(VERIFY_WRITE, to, n))
- n = uaccess.clear_user(n, to);
- return n;
+ return uaccess.clear_user(n, to);
}
extern int copy_to_user_real(void __user *dest, void *src, size_t count);
{
int err;
- if (!access_ok (VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
- return -EFAULT;
-
/* If you change siginfo_t structure, please be sure
this code is fixed accordingly.
It should never copy any pad contained in the structure
int err;
u32 tmp;
- if (!access_ok (VERIFY_READ, from, sizeof(compat_siginfo_t)))
- return -EFAULT;
-
err = __get_user(to->si_signo, &from->si_signo);
err |= __get_user(to->si_errno, &from->si_errno);
err |= __get_user(to->si_code, &from->si_code);
sigframe32 __user *frame = (sigframe32 __user *)regs->gprs[15];
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
goto badframe;
set_current_blocked(&set);
rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15];
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
set_current_blocked(&set);
sigset_t *set, struct pt_regs * regs)
{
sigframe32 __user *frame = get_sigframe(ka, regs, sizeof(sigframe32));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(sigframe32)))
- goto give_sigsegv;
if (frame == (void __user *) -1UL)
goto give_sigsegv;
{
int err = 0;
rt_sigframe32 __user *frame = get_sigframe(ka, regs, sizeof(rt_sigframe32));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(rt_sigframe32)))
- goto give_sigsegv;
if (frame == (void __user *) -1UL)
goto give_sigsegv;
if (!insn)
return -ENOENT;
if (insn->name[0] == '\0')
- snprintf(buf, sizeof(buf), "%s",
+ snprintf(buf, 8, "%s",
long_insn_name[(int) insn->name[1]]);
else
- snprintf(buf, sizeof(buf), "%.5s", insn->name);
+ snprintf(buf, 8, "%.5s", insn->name);
return 0;
}
EXPORT_SYMBOL_GPL(insn_to_mnemonic);
struct mod_arch_syminfo *info;
Elf_Addr loc, val;
int r_type, r_sym;
- int rc;
+ int rc = -ENOEXEC;
/* This is where to make the change */
loc = base + rela->r_offset;
sigframe __user *frame = (sigframe __user *)regs->gprs[15];
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE))
goto badframe;
set_current_blocked(&set);
rt_sigframe __user *frame = (rt_sigframe __user *)regs->gprs[15];
sigset_t set;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
if (__copy_from_user(&set.sig, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
set_current_blocked(&set);
sigframe __user *frame;
frame = get_sigframe(ka, regs, sizeof(sigframe));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(sigframe)))
- goto give_sigsegv;
if (frame == (void __user *) -1UL)
goto give_sigsegv;
rt_sigframe __user *frame;
frame = get_sigframe(ka, regs, sizeof(rt_sigframe));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(rt_sigframe)))
- goto give_sigsegv;
if (frame == (void __user *) -1UL)
goto give_sigsegv;
static size_t strnlen_user_mvcos(size_t count, const char __user *src)
{
+ size_t done, len, offset, len_str;
char buf[256];
- int rc;
- size_t done, len, len_str;
done = 0;
do {
- len = min(count - done, (size_t) 256);
- rc = uaccess.copy_from_user(len, src + done, buf);
- if (unlikely(rc == len))
+ offset = (size_t)src & ~PAGE_MASK;
+ len = min(256UL, PAGE_SIZE - offset);
+ len = min(count - done, len);
+ if (copy_from_user_mvcos(len, src, buf))
return 0;
- len -= rc;
len_str = strnlen(buf, len);
done += len_str;
+ src += len_str;
} while ((len_str == len) && (done < count));
return done + 1;
}
static size_t strncpy_from_user_mvcos(size_t count, const char __user *src,
char *dst)
{
- int rc;
- size_t done, len, len_str;
+ size_t done, len, offset, len_str;
+ if (unlikely(!count))
+ return 0;
done = 0;
do {
- len = min(count - done, (size_t) 4096);
- rc = uaccess.copy_from_user(len, src + done, dst);
- if (unlikely(rc == len))
+ offset = (size_t)src & ~PAGE_MASK;
+ len = min(count - done, PAGE_SIZE - offset);
+ if (copy_from_user_mvcos(len, src, dst))
return -EFAULT;
- len -= rc;
len_str = strnlen(dst, len);
done += len_str;
+ src += len_str;
+ dst += len_str;
} while ((len_str == len) && (done < count));
return done;
}
#include <asm/futex.h>
#include "uaccess.h"
+#ifndef CONFIG_64BIT
+#define AHI "ahi"
+#define SLR "slr"
+#else
+#define AHI "aghi"
+#define SLR "slgr"
+#endif
+
+static size_t strnlen_kernel(size_t count, const char __user *src)
+{
+ register unsigned long reg0 asm("0") = 0UL;
+ unsigned long tmp1, tmp2;
+
+ asm volatile(
+ " la %2,0(%1)\n"
+ " la %3,0(%0,%1)\n"
+ " "SLR" %0,%0\n"
+ "0: srst %3,%2\n"
+ " jo 0b\n"
+ " la %0,1(%3)\n" /* strnlen_kernel results includes \0 */
+ " "SLR" %0,%1\n"
+ "1:\n"
+ EX_TABLE(0b,1b)
+ : "+a" (count), "+a" (src), "=a" (tmp1), "=a" (tmp2)
+ : "d" (reg0) : "cc", "memory");
+ return count;
+}
+
+static size_t copy_in_kernel(size_t count, void __user *to,
+ const void __user *from)
+{
+ unsigned long tmp1;
+
+ asm volatile(
+ " "AHI" %0,-1\n"
+ " jo 5f\n"
+ " bras %3,3f\n"
+ "0:"AHI" %0,257\n"
+ "1: mvc 0(1,%1),0(%2)\n"
+ " la %1,1(%1)\n"
+ " la %2,1(%2)\n"
+ " "AHI" %0,-1\n"
+ " jnz 1b\n"
+ " j 5f\n"
+ "2: mvc 0(256,%1),0(%2)\n"
+ " la %1,256(%1)\n"
+ " la %2,256(%2)\n"
+ "3:"AHI" %0,-256\n"
+ " jnm 2b\n"
+ "4: ex %0,1b-0b(%3)\n"
+ "5:"SLR" %0,%0\n"
+ "6:\n"
+ EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
+ : "+a" (count), "+a" (to), "+a" (from), "=a" (tmp1)
+ : : "cc", "memory");
+ return count;
+}
/*
* Returns kernel address for user virtual address. If the returned address is
{
size_t rc;
- if (segment_eq(get_fs(), KERNEL_DS)) {
- memcpy(to, (void __kernel __force *) from, n);
- return 0;
- }
+ if (segment_eq(get_fs(), KERNEL_DS))
+ return copy_in_kernel(n, (void __user *) to, from);
rc = __user_copy_pt((unsigned long) from, to, n, 0);
if (unlikely(rc))
memset(to + n - rc, 0, rc);
size_t copy_to_user_pt(size_t n, void __user *to, const void *from)
{
- if (segment_eq(get_fs(), KERNEL_DS)) {
- memcpy((void __kernel __force *) to, from, n);
- return 0;
- }
+ if (segment_eq(get_fs(), KERNEL_DS))
+ return copy_in_kernel(n, to, (void __user *) from);
return __user_copy_pt((unsigned long) to, (void *) from, n, 1);
}
static size_t clear_user_pt(size_t n, void __user *to)
{
+ void *zpage = &empty_zero_page;
long done, size, ret;
- if (segment_eq(get_fs(), KERNEL_DS)) {
- memset((void __kernel __force *) to, 0, n);
- return 0;
- }
done = 0;
do {
if (n - done > PAGE_SIZE)
size = PAGE_SIZE;
else
size = n - done;
- ret = __user_copy_pt((unsigned long) to + done,
- &empty_zero_page, size, 1);
+ if (segment_eq(get_fs(), KERNEL_DS))
+ ret = copy_in_kernel(n, to, (void __user *) zpage);
+ else
+ ret = __user_copy_pt((unsigned long) to, zpage, size, 1);
done += size;
+ to += size;
if (ret)
return ret + n - done;
} while (done < n);
unsigned long offset, done, len, kaddr;
size_t len_str;
+ if (unlikely(!count))
+ return 0;
if (segment_eq(get_fs(), KERNEL_DS))
- return strnlen((const char __kernel __force *) src, count) + 1;
+ return strnlen_kernel(count, src);
done = 0;
retry:
spin_lock(&mm->page_table_lock);
static size_t strncpy_from_user_pt(size_t count, const char __user *src,
char *dst)
{
- size_t n = strnlen_user_pt(count, src);
+ size_t done, len, offset, len_str;
- if (!n)
- return -EFAULT;
- if (n > count)
- n = count;
- if (segment_eq(get_fs(), KERNEL_DS)) {
- memcpy(dst, (const char __kernel __force *) src, n);
- if (dst[n-1] == '\0')
- return n-1;
- else
- return n;
- }
- if (__user_copy_pt((unsigned long) src, dst, n, 0))
- return -EFAULT;
- if (dst[n-1] == '\0')
- return n-1;
- else
- return n;
+ if (unlikely(!count))
+ return 0;
+ done = 0;
+ do {
+ offset = (size_t)src & ~PAGE_MASK;
+ len = min(count - done, PAGE_SIZE - offset);
+ if (segment_eq(get_fs(), KERNEL_DS)) {
+ if (copy_in_kernel(len, (void __user *) dst, src))
+ return -EFAULT;
+ } else {
+ if (__user_copy_pt((unsigned long) src, dst, len, 0))
+ return -EFAULT;
+ }
+ len_str = strnlen(dst, len);
+ done += len_str;
+ src += len_str;
+ dst += len_str;
+ } while ((len_str == len) && (done < count));
+ return done;
}
static size_t copy_in_user_pt(size_t n, void __user *to,
unsigned long kaddr_to, kaddr_from;
int write_user;
- if (segment_eq(get_fs(), KERNEL_DS)) {
- memcpy((void __force *) to, (void __force *) from, n);
- return 0;
- }
+ if (segment_eq(get_fs(), KERNEL_DS))
+ return copy_in_kernel(n, to, from);
done = 0;
retry:
spin_lock(&mm->page_table_lock);
register unsigned long reg0 asm("0") = 0UL;
unsigned long tmp1, tmp2;
+ if (unlikely(!size))
+ return 0;
asm volatile(
" la %2,0(%1)\n"
" la %3,0(%0,%1)\n"
return size;
}
-size_t strncpy_from_user_std(size_t size, const char __user *src, char *dst)
+size_t strncpy_from_user_std(size_t count, const char __user *src, char *dst)
{
- register unsigned long reg0 asm("0") = 0UL;
- unsigned long tmp1, tmp2;
+ size_t done, len, offset, len_str;
- asm volatile(
- " la %3,0(%1)\n"
- " la %4,0(%0,%1)\n"
- " sacf 256\n"
- "0: srst %4,%3\n"
- " jo 0b\n"
- " sacf 0\n"
- " la %0,0(%4)\n"
- " jh 1f\n" /* found \0 in string ? */
- " "AHI" %4,1\n" /* include \0 in copy */
- "1:"SLR" %0,%1\n" /* %0 = return length (without \0) */
- " "SLR" %4,%1\n" /* %4 = copy length (including \0) */
- "2: mvcp 0(%4,%2),0(%1),%5\n"
- " jz 9f\n"
- "3:"AHI" %4,-256\n"
- " la %1,256(%1)\n"
- " la %2,256(%2)\n"
- "4: mvcp 0(%4,%2),0(%1),%5\n"
- " jnz 3b\n"
- " j 9f\n"
- "7: sacf 0\n"
- "8:"LHI" %0,%6\n"
- "9:\n"
- EX_TABLE(0b,7b) EX_TABLE(2b,8b) EX_TABLE(4b,8b)
- : "+a" (size), "+a" (src), "+d" (dst), "=a" (tmp1), "=a" (tmp2)
- : "d" (reg0), "K" (-EFAULT) : "cc", "memory");
- return size;
+ if (unlikely(!count))
+ return 0;
+ done = 0;
+ do {
+ offset = (size_t)src & ~PAGE_MASK;
+ len = min(count - done, PAGE_SIZE - offset);
+ if (copy_from_user_std(len, src, dst))
+ return -EFAULT;
+ len_str = strnlen(dst, len);
+ done += len_str;
+ src += len_str;
+ dst += len_str;
+ } while ((len_str == len) && (done < count));
+ return done;
}
#define __futex_atomic_op(insn, ret, oldval, newval, uaddr, oparg) \
{ "ASCE", "PGD", "PUD", "PMD", "PTE" };
seq_printf(m, "%s ", level_name[level]);
- if (pr & _PAGE_INVALID)
+ if (pr & _PAGE_INVALID) {
seq_printf(m, "I\n");
- else
- seq_printf(m, "%s\n", pr & _PAGE_RO ? "RO" : "RW");
+ return;
+ }
+ seq_printf(m, "%s", pr & _PAGE_RO ? "RO " : "RW ");
+ seq_printf(m, "%s", pr & _PAGE_CO ? "CO " : " ");
+ seq_putc(m, '\n');
}
static void note_page(struct seq_file *m, struct pg_state *st,
}
}
+#ifdef CONFIG_64BIT
+#define _PMD_PROT_MASK (_SEGMENT_ENTRY_RO | _SEGMENT_ENTRY_CO)
+#else
+#define _PMD_PROT_MASK 0
+#endif
+
static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
pud_t *pud, unsigned long addr)
{
pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd)) {
if (pmd_large(*pmd)) {
- prot = pmd_val(*pmd) & _SEGMENT_ENTRY_RO;
+ prot = pmd_val(*pmd) & _PMD_PROT_MASK;
note_page(m, st, prot, 3);
} else
walk_pte_level(m, st, pmd, addr);
}
}
+#ifdef CONFIG_64BIT
+#define _PUD_PROT_MASK (_REGION3_ENTRY_RO | _REGION3_ENTRY_CO)
+#else
+#define _PUD_PROT_MASK 0
+#endif
+
static void walk_pud_level(struct seq_file *m, struct pg_state *st,
pgd_t *pgd, unsigned long addr)
{
pud = pud_offset(pgd, addr);
if (!pud_none(*pud))
if (pud_large(*pud)) {
- prot = pud_val(*pud) & _PAGE_RO;
+ prot = pud_val(*pud) & _PUD_PROT_MASK;
note_page(m, st, prot, 2);
} else
walk_pmd_level(m, st, pud, addr);
if (!new_page)
goto out;
pmd_val(*pm_dir) = __pa(new_page) |
- _SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE;
+ _SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE |
+ _SEGMENT_ENTRY_CO;
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
tristate "i8042 PC Keyboard controller" if EXPERT || !X86
default y
depends on !PARISC && (!ARM || ARCH_SHARK || FOOTBRIDGE_HOST) && \
- (!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN
+ (!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN && !S390
help
i8042 is the chip over which the standard AT keyboard and PS/2
mouse are connected to the computer. If you use these devices,
{
struct dasd_device *device = container_of(work, struct dasd_device,
kick_validate);
- if (dasd_eckd_validate_server(device, DASD_CQR_FLAGS_FAILFAST)
+ unsigned long flags = 0;
+
+ set_bit(DASD_CQR_FLAGS_FAILFAST, &flags);
+ if (dasd_eckd_validate_server(device, flags)
== -EAGAIN) {
/* schedule worker again if failed */
schedule_work(&device->kick_validate);
int rc;
struct dasd_uid temp_uid;
unsigned long flags;
+ unsigned long cqr_flags = 0;
private = (struct dasd_eckd_private *) device->private;
rc = dasd_alias_make_device_known_to_lcu(device);
if (rc)
return rc;
- dasd_eckd_validate_server(device, DASD_CQR_FLAGS_FAILFAST);
+
+ set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr_flags);
+ dasd_eckd_validate_server(device, cqr_flags);
/* RE-Read Configuration Data */
dasd_eckd_read_conf(device);
.llseek = seq_lseek,
.release = single_release,
};
-static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
+
+static void setup_debugfs_entry(struct qdio_q *q)
{
char name[QDIO_DEBUGFS_NAME_LEN];
irq_ptr->debugfs_perf = NULL;
for_each_input_queue(irq_ptr, q, i)
- setup_debugfs_entry(q, cdev);
+ setup_debugfs_entry(q);
for_each_output_queue(irq_ptr, q, i)
- setup_debugfs_entry(q, cdev);
+ setup_debugfs_entry(q);
}
-void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
+void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr)
{
struct qdio_q *q;
int i;
struct qdio_irq *irq_ptr);
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
struct ccw_device *cdev);
-void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr,
- struct ccw_device *cdev);
+void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr);
int qdio_debug_init(void);
void qdio_debug_exit(void);
tiqdio_remove_input_queues(irq_ptr);
qdio_shutdown_queues(cdev);
- qdio_shutdown_debug_entries(irq_ptr, cdev);
+ qdio_shutdown_debug_entries(irq_ptr);
/* cleanup subchannel */
spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
projects / mirror_ubuntu-jammy-kernel.git / commitdiff