#include <linux/unistd.h>
#include <linux/mm.h>
#include <linux/ptrace.h>
-#include <linux/tracehook.h>
-#include <linux/module.h>
-#include <linux/elf.h>
#include <asm/ptrace.h>
-#include <asm/tracehook.h>
#include <asm/compat.h>
#include <asm/uaccess.h>
#include <asm/user32.h>
#include <asm/debugreg.h>
#include <asm/i387.h>
#include <asm/fpu32.h>
-#include <asm/ldt.h>
-#include <asm/desc.h>
+#include <asm/ia32.h>
/*
* Determines which flags the user has access to [1 = access, 0 = no access].
#define FLAG_MASK 0x54dd5UL
#define R32(l,q) \
- case offsetof(struct user_regs_struct32, l): stack[offsetof(struct pt_regs, q)/8] = val; break
+ case offsetof(struct user32, regs.l): stack[offsetof(struct pt_regs, q)/8] = val; break
static int putreg32(struct task_struct *child, unsigned regno, u32 val)
{
+ int i;
__u64 *stack = (__u64 *)task_pt_regs(child);
switch (regno) {
- case offsetof(struct user_regs_struct32, fs):
+ case offsetof(struct user32, regs.fs):
if (val && (val & 3) != 3) return -EIO;
child->thread.fsindex = val & 0xffff;
break;
- case offsetof(struct user_regs_struct32, gs):
+ case offsetof(struct user32, regs.gs):
if (val && (val & 3) != 3) return -EIO;
child->thread.gsindex = val & 0xffff;
break;
- case offsetof(struct user_regs_struct32, ds):
+ case offsetof(struct user32, regs.ds):
if (val && (val & 3) != 3) return -EIO;
child->thread.ds = val & 0xffff;
break;
- case offsetof(struct user_regs_struct32, es):
+ case offsetof(struct user32, regs.es):
child->thread.es = val & 0xffff;
break;
- case offsetof(struct user_regs_struct32, ss):
+ case offsetof(struct user32, regs.ss):
if ((val & 3) != 3) return -EIO;
stack[offsetof(struct pt_regs, ss)/8] = val & 0xffff;
break;
- case offsetof(struct user_regs_struct32, cs):
+ case offsetof(struct user32, regs.cs):
if ((val & 3) != 3) return -EIO;
stack[offsetof(struct pt_regs, cs)/8] = val & 0xffff;
break;
R32(eip, rip);
R32(esp, rsp);
- case offsetof(struct user_regs_struct32, eflags): {
+ case offsetof(struct user32, regs.eflags): {
__u64 *flags = &stack[offsetof(struct pt_regs, eflags)/8];
val &= FLAG_MASK;
*flags = val | (*flags & ~FLAG_MASK);
- clear_tsk_thread_flag(child, TIF_FORCED_TF);
break;
}
+ case offsetof(struct user32, u_debugreg[4]):
+ case offsetof(struct user32, u_debugreg[5]):
+ return -EIO;
+
+ case offsetof(struct user32, u_debugreg[0]):
+ child->thread.debugreg0 = val;
+ break;
+
+ case offsetof(struct user32, u_debugreg[1]):
+ child->thread.debugreg1 = val;
+ break;
+
+ case offsetof(struct user32, u_debugreg[2]):
+ child->thread.debugreg2 = val;
+ break;
+
+ case offsetof(struct user32, u_debugreg[3]):
+ child->thread.debugreg3 = val;
+ break;
+
+ case offsetof(struct user32, u_debugreg[6]):
+ child->thread.debugreg6 = val;
+ break;
+
+ case offsetof(struct user32, u_debugreg[7]):
+ val &= ~DR_CONTROL_RESERVED;
+ /* See arch/i386/kernel/ptrace.c for an explanation of
+ * this awkward check.*/
+ for(i=0; i<4; i++)
+ if ((0x5454 >> ((val >> (16 + 4*i)) & 0xf)) & 1)
+ return -EIO;
+ child->thread.debugreg7 = val;
+ break;
+
default:
- BUG();
+ if (regno > sizeof(struct user32) || (regno & 3))
+ return -EIO;
+
+ /* Other dummy fields in the virtual user structure are ignored */
+ break;
}
return 0;
}
#undef R32
#define R32(l,q) \
- case offsetof(struct user_regs_struct32, l): val = stack[offsetof(struct pt_regs, q)/8]; break
+ case offsetof(struct user32, regs.l): *val = stack[offsetof(struct pt_regs, q)/8]; break
-static int getreg32(struct task_struct *child, unsigned regno)
+static int getreg32(struct task_struct *child, unsigned regno, u32 *val)
{
__u64 *stack = (__u64 *)task_pt_regs(child);
- u32 val;
switch (regno) {
- case offsetof(struct user_regs_struct32, fs):
- val = child->thread.fsindex;
+ case offsetof(struct user32, regs.fs):
+ *val = child->thread.fsindex;
break;
- case offsetof(struct user_regs_struct32, gs):
- val = child->thread.gsindex;
+ case offsetof(struct user32, regs.gs):
+ *val = child->thread.gsindex;
break;
- case offsetof(struct user_regs_struct32, ds):
- val = child->thread.ds;
+ case offsetof(struct user32, regs.ds):
+ *val = child->thread.ds;
break;
- case offsetof(struct user_regs_struct32, es):
- val = child->thread.es;
+ case offsetof(struct user32, regs.es):
+ *val = child->thread.es;
break;
R32(cs, cs);
R32(eax, rax);
R32(orig_eax, orig_rax);
R32(eip, rip);
+ R32(eflags, eflags);
R32(esp, rsp);
- case offsetof(struct user_regs_struct32, eflags):
- val = stack[offsetof(struct pt_regs, eflags) / 8];
- if (test_tsk_thread_flag(child, TIF_FORCED_TF))
- val &= ~X86_EFLAGS_TF;
+ case offsetof(struct user32, u_debugreg[0]):
+ *val = child->thread.debugreg0;
+ break;
+ case offsetof(struct user32, u_debugreg[1]):
+ *val = child->thread.debugreg1;
+ break;
+ case offsetof(struct user32, u_debugreg[2]):
+ *val = child->thread.debugreg2;
+ break;
+ case offsetof(struct user32, u_debugreg[3]):
+ *val = child->thread.debugreg3;
+ break;
+ case offsetof(struct user32, u_debugreg[6]):
+ *val = child->thread.debugreg6;
+ break;
+ case offsetof(struct user32, u_debugreg[7]):
+ *val = child->thread.debugreg7;
break;
default:
- BUG();
- val = -1;
- break;
- }
-
- return val;
-}
-
-#undef R32
+ if (regno > sizeof(struct user32) || (regno & 3))
+ return -EIO;
-static int
-ia32_genregs_get(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- if (kbuf) {
- u32 *kp = kbuf;
- while (count > 0) {
- *kp++ = getreg32(target, pos);
- pos += 4;
- count -= 4;
- }
- }
- else {
- u32 __user *up = ubuf;
- while (count > 0) {
- if (__put_user(getreg32(target, pos), up++))
- return -EFAULT;
- pos += 4;
- count -= 4;
- }
+ /* Other dummy fields in the virtual user structure are ignored */
+ *val = 0;
+ break;
}
-
return 0;
}
-static int
-ia32_genregs_set(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- int ret = 0;
-
- if (kbuf) {
- const u32 *kp = kbuf;
- while (!ret && count > 0) {
- ret = putreg32(target, pos, *kp++);
- pos += 4;
- count -= 4;
- }
- }
- else {
- int ret = 0;
- const u32 __user *up = ubuf;
- while (!ret && count > 0) {
- u32 val;
- ret = __get_user(val, up++);
- if (!ret)
- ret = putreg32(target, pos, val);
- pos += 4;
- count -= 4;
- }
- }
-
- return ret;
-}
-
-static int
-ia32_fpregs_active(struct task_struct *target,
- const struct utrace_regset *regset)
-{
- return tsk_used_math(target) ? regset->n : 0;
-}
-
-static int
-ia32_fpregs_get(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- struct user_i387_ia32_struct fp;
- int ret;
-
- if (tsk_used_math(target)) {
- if (target == current)
- unlazy_fpu(target);
- }
- else
- init_fpu(target);
-
- ret = get_fpregs32(&fp, target);
- if (ret == 0)
- ret = utrace_regset_copyout(&pos, &count, &kbuf, &ubuf,
- &fp, 0, -1);
-
- return ret;
-}
+#undef R32
-static int
-ia32_fpregs_set(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
+static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
{
- struct user_i387_ia32_struct fp;
int ret;
-
- if (tsk_used_math(target)) {
- if (target == current)
- unlazy_fpu(target);
- }
- else if (pos == 0 && count == sizeof(fp))
- set_stopped_child_used_math(target);
- else
- init_fpu(target);
-
- if (pos > 0 || count < sizeof(fp)) {
- ret = get_fpregs32(&fp, target);
- if (ret == 0)
- ret = utrace_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &fp, 0, -1);
+ compat_siginfo_t *si32 = (compat_siginfo_t *)compat_ptr(data);
+ siginfo_t ssi;
+ siginfo_t *si = compat_alloc_user_space(sizeof(siginfo_t));
+ if (request == PTRACE_SETSIGINFO) {
+ memset(&ssi, 0, sizeof(siginfo_t));
+ ret = copy_siginfo_from_user32(&ssi, si32);
if (ret)
return ret;
- kbuf = &fp;
- }
- else if (kbuf == NULL) {
- if (__copy_from_user(&fp, ubuf, sizeof(fp)))
+ if (copy_to_user(si, &ssi, sizeof(siginfo_t)))
return -EFAULT;
- kbuf = &fp;
}
-
- return set_fpregs32(target, kbuf);
-}
-
-static int
-ia32_fpxregs_active(struct task_struct *target,
- const struct utrace_regset *regset)
-{
- return tsk_used_math(target) ? regset->n : 0;
-}
-
-static int
-ia32_fpxregs_get(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- if (tsk_used_math(target)) {
- if (target == current)
- unlazy_fpu(target);
+ ret = sys_ptrace(request, pid, addr, (unsigned long)si);
+ if (ret)
+ return ret;
+ if (request == PTRACE_GETSIGINFO) {
+ if (copy_from_user(&ssi, si, sizeof(siginfo_t)))
+ return -EFAULT;
+ ret = copy_siginfo_to_user32(si32, &ssi);
}
- else
- init_fpu(target);
-
- return utrace_regset_copyout(&pos, &count, &kbuf, &ubuf,
- &target->thread.i387.fxsave, 0, -1);
+ return ret;
}
-static int
-ia32_fpxregs_set(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-
+asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
{
+ struct task_struct *child;
+ struct pt_regs *childregs;
+ void __user *datap = compat_ptr(data);
int ret;
+ __u32 val;
+
+ switch (request) {
+ case PTRACE_TRACEME:
+ case PTRACE_ATTACH:
+ case PTRACE_KILL:
+ case PTRACE_CONT:
+ case PTRACE_SINGLESTEP:
+ case PTRACE_DETACH:
+ case PTRACE_SYSCALL:
+ case PTRACE_SETOPTIONS:
+ return sys_ptrace(request, pid, addr, data);
- if (tsk_used_math(target)) {
- if (target == current)
- unlazy_fpu(target);
- }
- else if (pos == 0 && count == sizeof(struct i387_fxsave_struct))
- set_stopped_child_used_math(target);
- else
- init_fpu(target);
-
- ret = utrace_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &target->thread.i387.fxsave, 0, -1);
-
- target->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask;
-
- return ret;
-}
-
-static int
-ia32_dbregs_active(struct task_struct *tsk, const struct utrace_regset *regset)
-{
- if (tsk->thread.debugreg6 | tsk->thread.debugreg7)
- return 8;
- return 0;
-}
+ default:
+ return -EINVAL;
-static int
-ia32_dbregs_get(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- for (pos >>= 2, count >>= 2; count > 0; --count, ++pos) {
- u32 val;
-
- /*
- * The hardware updates the status register on a debug trap,
- * but do_debug (traps.c) saves it for us when that happens.
- * So whether the target is current or not, debugregN is good.
- */
- val = 0;
- switch (pos) {
- case 0: val = target->thread.debugreg0; break;
- case 1: val = target->thread.debugreg1; break;
- case 2: val = target->thread.debugreg2; break;
- case 3: val = target->thread.debugreg3; break;
- case 6: val = target->thread.debugreg6; break;
- case 7: val = target->thread.debugreg7; break;
- }
+ case PTRACE_PEEKTEXT:
+ case PTRACE_PEEKDATA:
+ case PTRACE_POKEDATA:
+ case PTRACE_POKETEXT:
+ case PTRACE_POKEUSR:
+ case PTRACE_PEEKUSR:
+ case PTRACE_GETREGS:
+ case PTRACE_SETREGS:
+ case PTRACE_SETFPREGS:
+ case PTRACE_GETFPREGS:
+ case PTRACE_SETFPXREGS:
+ case PTRACE_GETFPXREGS:
+ case PTRACE_GETEVENTMSG:
+ break;
- if (kbuf) {
- *(u32 *) kbuf = val;
- kbuf += sizeof(u32);
- }
- else {
- if (__put_user(val, (u32 __user *) ubuf))
- return -EFAULT;
- ubuf += sizeof(u32);
- }
+ case PTRACE_SETSIGINFO:
+ case PTRACE_GETSIGINFO:
+ return ptrace32_siginfo(request, pid, addr, data);
}
- return 0;
-}
+ child = ptrace_get_task_struct(pid);
+ if (IS_ERR(child))
+ return PTR_ERR(child);
-static int
-ia32_dbregs_set(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- /*
- * We'll just hijack the native setter to do the real work for us.
- */
- const struct utrace_regset *dbregset = &utrace_x86_64_native.regsets[2];
-
- int ret = 0;
-
- for (pos >>= 2, count >>= 2; count > 0; --count, ++pos) {
- unsigned long val;
-
- if (kbuf) {
- val = *(const u32 *) kbuf;
- kbuf += sizeof(u32);
- }
- else {
- if (__get_user(val, (u32 __user *) ubuf))
- return -EFAULT;
- ubuf += sizeof(u32);
- }
+ ret = ptrace_check_attach(child, request == PTRACE_KILL);
+ if (ret < 0)
+ goto out;
- ret = (*dbregset->set)(target, dbregset, pos * sizeof(long),
- sizeof(val), &val, NULL);
- if (ret)
- break;
- }
+ childregs = task_pt_regs(child);
- return ret;
-}
+ switch (request) {
+ case PTRACE_PEEKDATA:
+ case PTRACE_PEEKTEXT:
+ ret = 0;
+ if (access_process_vm(child, addr, &val, sizeof(u32), 0)!=sizeof(u32))
+ ret = -EIO;
+ else
+ ret = put_user(val, (unsigned int __user *)datap);
+ break;
+ case PTRACE_POKEDATA:
+ case PTRACE_POKETEXT:
+ ret = 0;
+ if (access_process_vm(child, addr, &data, sizeof(u32), 1)!=sizeof(u32))
+ ret = -EIO;
+ break;
-/*
- * Perform get_thread_area on behalf of the traced child.
- */
-static int
-ia32_tls_get(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- struct user_desc info, *ip;
- const struct n_desc_struct *desc;
- const struct n_desc_struct *tls;
+ case PTRACE_PEEKUSR:
+ ret = getreg32(child, addr, &val);
+ if (ret == 0)
+ ret = put_user(val, (__u32 __user *)datap);
+ break;
-/*
- * Get the current Thread-Local Storage area:
- */
+ case PTRACE_POKEUSR:
+ ret = putreg32(child, addr, data);
+ break;
-#define GET_BASE(desc) ( \
- (((desc)->a >> 16) & 0x0000ffff) | \
- (((desc)->b << 16) & 0x00ff0000) | \
- ( (desc)->b & 0xff000000) )
-
-#define GET_LIMIT(desc) ( \
- ((desc)->a & 0x0ffff) | \
- ((desc)->b & 0xf0000) )
-
-#define GET_32BIT(desc) (((desc)->b >> 22) & 1)
-#define GET_CONTENTS(desc) (((desc)->b >> 10) & 3)
-#define GET_WRITABLE(desc) (((desc)->b >> 9) & 1)
-#define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1)
-#define GET_PRESENT(desc) (((desc)->b >> 15) & 1)
-#define GET_USEABLE(desc) (((desc)->b >> 20) & 1)
-
- tls = (struct n_desc_struct *) target->thread.tls_array;
- desc = &tls[pos];
- ip = kbuf ?: &info;
- memset(ip, 0, sizeof *ip);
- for (; count > 0; count -= sizeof(struct user_desc), ++desc) {
- ip->entry_number = desc - tls + GDT_ENTRY_TLS_MIN;
- ip->base_addr = GET_BASE(desc);
- ip->limit = GET_LIMIT(desc);
- ip->seg_32bit = GET_32BIT(desc);
- ip->contents = GET_CONTENTS(desc);
- ip->read_exec_only = !GET_WRITABLE(desc);
- ip->limit_in_pages = GET_LIMIT_PAGES(desc);
- ip->seg_not_present = !GET_PRESENT(desc);
- ip->useable = GET_USEABLE(desc);
-
- if (kbuf)
- ++ip;
- else {
- if (__copy_to_user(ubuf, &info, sizeof(info)))
- return -EFAULT;
- ubuf += sizeof(info);
+ case PTRACE_GETREGS: { /* Get all gp regs from the child. */
+ int i;
+ if (!access_ok(VERIFY_WRITE, datap, 16*4)) {
+ ret = -EIO;
+ break;
}
+ ret = 0;
+ for ( i = 0; i <= 16*4 ; i += sizeof(__u32) ) {
+ getreg32(child, i, &val);
+ ret |= __put_user(val,(u32 __user *)datap);
+ datap += sizeof(u32);
+ }
+ break;
}
- return 0;
-}
-
-/*
- * Perform set_thread_area on behalf of the traced child.
- */
-static int
-ia32_tls_set(struct task_struct *target,
- const struct utrace_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct user_desc info;
- struct n_desc_struct *desc;
- struct n_desc_struct newtls[GDT_ENTRY_TLS_ENTRIES];
- unsigned int i;
- int cpu;
-
- pos /= sizeof(struct user_desc);
- count /= sizeof(struct user_desc);
-
- desc = &newtls[pos];
- for (i = 0; i < count; ++i, ++desc) {
- const struct user_desc *ip;
- if (kbuf) {
- ip = kbuf;
- kbuf += sizeof(struct user_desc);
- }
- else {
- ip = &info;
- if (__copy_from_user(&info, ubuf, sizeof(info)))
- return -EFAULT;
- ubuf += sizeof(struct user_desc);
+ case PTRACE_SETREGS: { /* Set all gp regs in the child. */
+ unsigned long tmp;
+ int i;
+ if (!access_ok(VERIFY_READ, datap, 16*4)) {
+ ret = -EIO;
+ break;
}
-
- if (LDT_empty(ip)) {
- desc->a = 0;
- desc->b = 0;
- } else {
- desc->a = LDT_entry_a(ip);
- desc->b = LDT_entry_b(ip);
+ ret = 0;
+ for ( i = 0; i <= 16*4; i += sizeof(u32) ) {
+ ret |= __get_user(tmp, (u32 __user *)datap);
+ putreg32(child, i, tmp);
+ datap += sizeof(u32);
}
+ break;
}
- /*
- * We must not get preempted while modifying the TLS.
- */
- cpu = get_cpu();
- memcpy(&target->thread.tls_array[pos], newtls,
- count * sizeof(newtls[0]));
- if (target == current)
- load_TLS(&target->thread, cpu);
- put_cpu();
+ case PTRACE_GETFPREGS:
+ ret = -EIO;
+ if (!access_ok(VERIFY_READ, compat_ptr(data),
+ sizeof(struct user_i387_struct)))
+ break;
+ save_i387_ia32(child, datap, childregs, 1);
+ ret = 0;
+ break;
- return 0;
-}
+ case PTRACE_SETFPREGS:
+ ret = -EIO;
+ if (!access_ok(VERIFY_WRITE, datap,
+ sizeof(struct user_i387_struct)))
+ break;
+ ret = 0;
+ /* don't check EFAULT to be bug-to-bug compatible to i386 */
+ restore_i387_ia32(child, datap, 1);
+ break;
-/*
- * Determine how many TLS slots are in use.
- */
-static int
-ia32_tls_active(struct task_struct *target, const struct utrace_regset *regset)
-{
- int i;
- for (i = GDT_ENTRY_TLS_ENTRIES; i > 0; --i) {
- struct n_desc_struct *desc = (struct n_desc_struct *)
- &target->thread.tls_array[i - 1];
- if ((desc->a | desc->b) != 0)
+ case PTRACE_GETFPXREGS: {
+ struct user32_fxsr_struct __user *u = datap;
+ init_fpu(child);
+ ret = -EIO;
+ if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
+ break;
+ ret = -EFAULT;
+ if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u)))
break;
+ ret = __put_user(childregs->cs, &u->fcs);
+ ret |= __put_user(child->thread.ds, &u->fos);
+ break;
+ }
+ case PTRACE_SETFPXREGS: {
+ struct user32_fxsr_struct __user *u = datap;
+ unlazy_fpu(child);
+ ret = -EIO;
+ if (!access_ok(VERIFY_READ, u, sizeof(*u)))
+ break;
+ /* no checking to be bug-to-bug compatible with i386 */
+ __copy_from_user(&child->thread.i387.fxsave, u, sizeof(*u));
+ set_stopped_child_used_math(child);
+ child->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask;
+ ret = 0;
+ break;
}
- return i;
-}
-
-/*
- * This should match arch/i386/kernel/ptrace.c:native_regsets.
- * XXX ioperm? vm86?
- */
-static const struct utrace_regset ia32_regsets[] = {
- {
- .n = sizeof(struct user_regs_struct32)/4,
- .size = 4, .align = 4,
- .get = ia32_genregs_get, .set = ia32_genregs_set
- },
- {
- .n = sizeof(struct user_i387_ia32_struct) / 4,
- .size = 4, .align = 4,
- .active = ia32_fpregs_active,
- .get = ia32_fpregs_get, .set = ia32_fpregs_set
- },
- {
- .n = sizeof(struct user32_fxsr_struct) / 4,
- .size = 4, .align = 4,
- .active = ia32_fpxregs_active,
- .get = ia32_fpxregs_get, .set = ia32_fpxregs_set
- },
- {
- .n = GDT_ENTRY_TLS_ENTRIES,
- .bias = GDT_ENTRY_TLS_MIN,
- .size = sizeof(struct user_desc),
- .align = sizeof(struct user_desc),
- .active = ia32_tls_active,
- .get = ia32_tls_get, .set = ia32_tls_set
- },
- {
- .n = 8, .size = 4, .align = 4,
- .active = ia32_dbregs_active,
- .get = ia32_dbregs_get, .set = ia32_dbregs_set
- },
-};
-
-const struct utrace_regset_view utrace_ia32_view = {
- .name = "i386", .e_machine = EM_386,
- .regsets = ia32_regsets,
- .n = sizeof ia32_regsets / sizeof ia32_regsets[0],
-};
-EXPORT_SYMBOL_GPL(utrace_ia32_view);
-
-
-#ifdef CONFIG_PTRACE
-/*
- * This matches the arch/i386/kernel/ptrace.c definitions.
- */
+ case PTRACE_GETEVENTMSG:
+ ret = put_user(child->ptrace_message,(unsigned int __user *)compat_ptr(data));
+ break;
-static const struct ptrace_layout_segment ia32_uarea[] = {
- {0, sizeof(struct user_regs_struct32), 0, 0},
- {offsetof(struct user32, u_debugreg[0]),
- offsetof(struct user32, u_debugreg[8]), 4, 0},
- {0, 0, -1, 0}
-};
-
-fastcall int arch_compat_ptrace(compat_long_t *req, struct task_struct *child,
- struct utrace_attached_engine *engine,
- compat_ulong_t addr, compat_ulong_t data,
- compat_long_t *val)
-{
- switch (*req) {
- case PTRACE_PEEKUSR:
- return ptrace_compat_peekusr(child, engine, ia32_uarea,
- addr, data);
- case PTRACE_POKEUSR:
- return ptrace_compat_pokeusr(child, engine, ia32_uarea,
- addr, data);
- case PTRACE_GETREGS:
- return ptrace_whole_regset(child, engine, data, 0, 0);
- case PTRACE_SETREGS:
- return ptrace_whole_regset(child, engine, data, 0, 1);
- case PTRACE_GETFPREGS:
- return ptrace_whole_regset(child, engine, data, 1, 0);
- case PTRACE_SETFPREGS:
- return ptrace_whole_regset(child, engine, data, 1, 1);
- case PTRACE_GETFPXREGS:
- return ptrace_whole_regset(child, engine, data, 2, 0);
- case PTRACE_SETFPXREGS:
- return ptrace_whole_regset(child, engine, data, 2, 1);
- case PTRACE_GET_THREAD_AREA:
- case PTRACE_SET_THREAD_AREA:
- return ptrace_onereg_access(child, engine,
- &utrace_ia32_view, 3,
- addr,
- (void __user *)(unsigned long)data,
- *req == PTRACE_SET_THREAD_AREA);
+ default:
+ BUG();
}
- return -ENOSYS;
+
+ out:
+ put_task_struct(child);
+ return ret;
}
-#endif /* CONFIG_PTRACE */
+
git://git.onelab.eu / linux-2.6.git / blobdiff