static int compat_ptrace_write_user(struct task_struct *tsk, compat_ulong_t off, compat_ulong_t val) { int ret; if (off & 3 || off >= COMPAT_USER_SZ) return -EIO; if (off >= sizeof(compat_elf_gregset_t)) return 0; ret = copy_regset_from_user(tsk, &user_aarch32_view, REGSET_COMPAT_GPR, off, sizeof(compat_ulong_t), &val); return ret; }
static int ptrace_regset(struct task_struct *task, int req, unsigned int type, struct iovec *kiov) { const struct user_regset_view *view = task_user_regset_view(task); const struct user_regset *regset = find_regset(view, type); int regset_no; if (!regset || (kiov->iov_len % regset->size) != 0) return -EINVAL; regset_no = regset - view->regsets; kiov->iov_len = min(kiov->iov_len, (__kernel_size_t) (regset->n * regset->size)); if (req == PTRACE_GETREGSET) return copy_regset_to_user(task, view, regset_no, 0, kiov->iov_len, kiov->iov_base); else return copy_regset_from_user(task, view, regset_no, 0, kiov->iov_len, kiov->iov_base); }
long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { int ret; unsigned long __user *datap = (unsigned long __user *) data; switch (request) { case PTRACE_PEEKUSR: ret = ptrace_read_user(child, addr, datap); break; case PTRACE_POKEUSR: ret = ptrace_write_user(child, addr, data); break; case PTRACE_GETREGS: ret = copy_regset_to_user(child, &user_arm_view, REGSET_GPR, 0, sizeof(struct pt_regs), datap); break; case PTRACE_SETREGS: ret = copy_regset_from_user(child, &user_arm_view, REGSET_GPR, 0, sizeof(struct pt_regs), datap); break; case PTRACE_GETFPREGS: ret = copy_regset_to_user(child, &user_arm_view, REGSET_FPR, 0, sizeof(union fp_state), datap); break; case PTRACE_SETFPREGS: ret = copy_regset_from_user(child, &user_arm_view, REGSET_FPR, 0, sizeof(union fp_state), datap); break; #ifdef CONFIG_IWMMXT case PTRACE_GETWMMXREGS: ret = ptrace_getwmmxregs(child, datap); break; case PTRACE_SETWMMXREGS: ret = ptrace_setwmmxregs(child, datap); break; #endif case PTRACE_GET_THREAD_AREA: ret = put_user(task_thread_info(child)->tp_value, datap); break; case PTRACE_SET_SYSCALL: task_thread_info(child)->syscall = data; ret = 0; break; #ifdef CONFIG_CRUNCH case PTRACE_GETCRUNCHREGS: ret = ptrace_getcrunchregs(child, datap); break; case PTRACE_SETCRUNCHREGS: ret = ptrace_setcrunchregs(child, datap); break; #endif #ifdef CONFIG_VFP case PTRACE_GETVFPREGS: ret = copy_regset_to_user(child, &user_arm_view, REGSET_VFP, 0, ARM_VFPREGS_SIZE, datap); break; case PTRACE_SETVFPREGS: ret = copy_regset_from_user(child, &user_arm_view, REGSET_VFP, 0, ARM_VFPREGS_SIZE, datap); break; #endif #ifdef CONFIG_HAVE_HW_BREAKPOINT case PTRACE_GETHBPREGS: ret = ptrace_gethbpregs(child, addr, (unsigned long __user *)data); break; case PTRACE_SETHBPREGS: ret = ptrace_sethbpregs(child, addr, (unsigned long __user *)data); break; #endif default: ret = ptrace_request(child, request, addr, data); break; } return ret; }
long compat_arch_ptrace(struct task_struct *child, compat_long_t request, compat_ulong_t caddr, compat_ulong_t cdata) { unsigned long addr = caddr; unsigned long data = cdata; void __user *datap = compat_ptr(data); int ret; switch (request) { case PTRACE_PEEKUSR: ret = compat_ptrace_read_user(child, addr, datap); break; case PTRACE_POKEUSR: ret = compat_ptrace_write_user(child, addr, data); break; case COMPAT_PTRACE_GETREGS: ret = copy_regset_to_user(child, &user_aarch32_view, REGSET_COMPAT_GPR, 0, sizeof(compat_elf_gregset_t), datap); break; case COMPAT_PTRACE_SETREGS: ret = copy_regset_from_user(child, &user_aarch32_view, REGSET_COMPAT_GPR, 0, sizeof(compat_elf_gregset_t), datap); break; case COMPAT_PTRACE_GET_THREAD_AREA: ret = put_user((compat_ulong_t)child->thread.tp_value, (compat_ulong_t __user *)datap); break; case COMPAT_PTRACE_SET_SYSCALL: task_pt_regs(child)->syscallno = data; ret = 0; break; case COMPAT_PTRACE_GETVFPREGS: ret = copy_regset_to_user(child, &user_aarch32_view, REGSET_COMPAT_VFP, 0, VFP_STATE_SIZE, datap); break; case COMPAT_PTRACE_SETVFPREGS: ret = copy_regset_from_user(child, &user_aarch32_view, REGSET_COMPAT_VFP, 0, VFP_STATE_SIZE, datap); break; #ifdef CONFIG_HAVE_HW_BREAKPOINT case COMPAT_PTRACE_GETHBPREGS: ret = compat_ptrace_gethbpregs(child, addr, datap); break; case COMPAT_PTRACE_SETHBPREGS: ret = compat_ptrace_sethbpregs(child, addr, datap); break; #endif default: ret = compat_ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { unsigned long __user *datap = (long __user __force *)data; unsigned long tmp; long ret = -EIO; char *childreg; struct pt_regs copyregs; switch (request) { case PTRACE_PEEKUSR: /* Read register from pt_regs. */ if (addr >= PTREGS_SIZE) break; childreg = getregs(child, ©regs) + addr; #ifdef CONFIG_COMPAT if (is_compat_task()) { if (addr & (sizeof(compat_long_t)-1)) break; ret = put_user(*(compat_long_t *)childreg, (compat_long_t __user *)datap); } else #endif { if (addr & (sizeof(long)-1)) break; ret = put_user(*(long *)childreg, datap); } break; case PTRACE_POKEUSR: /* Write register in pt_regs. */ if (addr >= PTREGS_SIZE) break; childreg = getregs(child, ©regs) + addr; #ifdef CONFIG_COMPAT if (is_compat_task()) { if (addr & (sizeof(compat_long_t)-1)) break; *(compat_long_t *)childreg = data; } else #endif { if (addr & (sizeof(long)-1)) break; *(long *)childreg = data; } putregs(child, ©regs); ret = 0; break; case PTRACE_GETREGS: /* Get all registers from the child. */ ret = copy_regset_to_user(child, &tile_user_regset_view, REGSET_GPR, 0, sizeof(struct pt_regs), datap); break; case PTRACE_SETREGS: /* Set all registers in the child. */ ret = copy_regset_from_user(child, &tile_user_regset_view, REGSET_GPR, 0, sizeof(struct pt_regs), datap); break; case PTRACE_GETFPREGS: /* Get the child FPU state. */ case PTRACE_SETFPREGS: /* Set the child FPU state. */ break; case PTRACE_SETOPTIONS: /* Support TILE-specific ptrace options. */ BUILD_BUG_ON(PTRACE_O_MASK_TILE & PTRACE_O_MASK); tmp = data & PTRACE_O_MASK_TILE; data &= ~PTRACE_O_MASK_TILE; ret = ptrace_request(child, request, addr, data); if (ret == 0) { unsigned int flags = child->ptrace; flags &= ~(PTRACE_O_MASK_TILE << PT_OPT_FLAG_SHIFT); flags |= (tmp << PT_OPT_FLAG_SHIFT); child->ptrace = flags; } break; default: #ifdef CONFIG_COMPAT if (task_thread_info(current)->status & TS_COMPAT) { ret = compat_ptrace_request(child, request, addr, data); break; } #endif ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4]; void __user *addr2p; const struct user_regset_view *view; struct pt_regs __user *pregs; struct fps __user *fps; int ret; view = task_user_regset_view(current); addr2p = (void __user *) addr2; pregs = (struct pt_regs __user *) addr; fps = (struct fps __user *) addr; switch(request) { case PTRACE_GETREGS: { ret = copy_regset_to_user(child, view, REGSET_GENERAL, 32 * sizeof(u32), 4 * sizeof(u32), &pregs->psr); if (!ret) copy_regset_to_user(child, view, REGSET_GENERAL, 1 * sizeof(u32), 15 * sizeof(u32), &pregs->u_regs[0]); break; } case PTRACE_SETREGS: { ret = copy_regset_from_user(child, view, REGSET_GENERAL, 32 * sizeof(u32), 4 * sizeof(u32), &pregs->psr); if (!ret) copy_regset_from_user(child, view, REGSET_GENERAL, 1 * sizeof(u32), 15 * sizeof(u32), &pregs->u_regs[0]); break; } case PTRACE_GETFPREGS: { ret = copy_regset_to_user(child, view, REGSET_FP, 0 * sizeof(u32), 32 * sizeof(u32), &fps->regs[0]); if (!ret) ret = copy_regset_to_user(child, view, REGSET_FP, 33 * sizeof(u32), 1 * sizeof(u32), &fps->fsr); if (!ret) { if (__put_user(0, &fps->fpqd) || __put_user(0, &fps->flags) || __put_user(0, &fps->extra) || clear_user(fps->fpq, sizeof(fps->fpq))) ret = -EFAULT; } break; } case PTRACE_SETFPREGS: { ret = copy_regset_from_user(child, view, REGSET_FP, 0 * sizeof(u32), 32 * sizeof(u32), &fps->regs[0]); if (!ret) ret = copy_regset_from_user(child, view, REGSET_FP, 33 * sizeof(u32), 1 * sizeof(u32), &fps->fsr); break; } case PTRACE_READTEXT: case PTRACE_READDATA: ret = ptrace_readdata(child, addr, addr2p, data); if (ret == data) ret = 0; else if (ret >= 0) ret = -EIO; break; case PTRACE_WRITETEXT: case PTRACE_WRITEDATA: ret = ptrace_writedata(child, addr2p, addr, data); if (ret == data) ret = 0; else if (ret >= 0) ret = -EIO; break; default: if (request == PTRACE_SPARC_DETACH) request = PTRACE_DETACH; ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; unsigned long __user *datap = (unsigned long __user *)data; void *paddr = (void *)addr; switch (request) { /* when I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKDATA: pr_debug("ptrace: PEEKDATA\n"); /* fall through */ case PTRACE_PEEKTEXT: /* read word at location addr. */ { unsigned long tmp = 0; int copied = 0, to_copy = sizeof(tmp); ret = -EIO; pr_debug("ptrace: PEEKTEXT at addr 0x%08lx + %i\n", addr, to_copy); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &tmp, to_copy, 0); if (copied) break; /* hrm, why didn't that work ... maybe no mapping */ if (addr >= FIXED_CODE_START && addr + to_copy <= FIXED_CODE_END) { copy_from_user_page(0, 0, 0, &tmp, paddr, to_copy); copied = to_copy; } else if (addr >= BOOT_ROM_START) { memcpy(&tmp, paddr, to_copy); copied = to_copy; } break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp); if (copied == to_copy) ret = put_user(tmp, datap); break; } /* when I and D space are separate, this will have to be fixed. */ case PTRACE_POKEDATA: pr_debug("ptrace: PTRACE_PEEKDATA\n"); /* fall through */ case PTRACE_POKETEXT: /* write the word at location addr. */ { int copied = 0, to_copy = sizeof(data); ret = -EIO; pr_debug("ptrace: POKETEXT at addr 0x%08lx + %i bytes %lx\n", addr, to_copy, data); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &data, to_copy, 1); break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(paddr, &data, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(paddr, &data, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d\n", copied); if (copied == to_copy) ret = 0; break; } case PTRACE_PEEKUSR: switch (addr) { #ifdef CONFIG_BINFMT_ELF_FDPIC /* backwards compat */ case PT_FDPIC_EXEC: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_EXEC; goto case_default; case PT_FDPIC_INTERP: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_INTERP; goto case_default; #endif default: ret = get_reg(child, addr, datap); } pr_debug("ptrace: PEEKUSR reg %li with %#lx = %i\n", addr, data, ret); break; case PTRACE_POKEUSR: ret = put_reg(child, addr, data); pr_debug("ptrace: POKEUSR reg %li with %li = %i\n", addr, data, ret); break; case PTRACE_GETREGS: pr_debug("ptrace: PTRACE_GETREGS\n"); return copy_regset_to_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), (void __user *)data); case PTRACE_SETREGS: pr_debug("ptrace: PTRACE_SETREGS\n"); return copy_regset_from_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), (const void __user *)data); case_default: default: ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, long addr, long data) { unsigned long tmp; int ret; switch (request) { /* read the word at location addr in the USER area. */ case PTRACE_PEEKUSR: ret = -EIO; if ((addr & 3) || addr < 0 || addr > sizeof(struct user) - 3) break; tmp = 0; /* Default return condition */ if (addr < NR_PTREGS << 2) tmp = get_stack_long(child, ptrace_regid_to_frame[addr]); ret = put_user(tmp, (unsigned long *) data); break; /* write the word at location addr in the USER area */ case PTRACE_POKEUSR: ret = -EIO; if ((addr & 3) || addr < 0 || addr > sizeof(struct user) - 3) break; ret = 0; if (addr < NR_PTREGS << 2) ret = put_stack_long(child, ptrace_regid_to_frame[addr], data); break; case PTRACE_GETREGS: /* Get all integer regs from the child. */ return copy_regset_to_user(child, &user_mn10300_native_view, REGSET_GENERAL, 0, NR_PTREGS * sizeof(long), (void __user *)data); case PTRACE_SETREGS: /* Set all integer regs in the child. */ return copy_regset_from_user(child, &user_mn10300_native_view, REGSET_GENERAL, 0, NR_PTREGS * sizeof(long), (const void __user *)data); case PTRACE_GETFPREGS: /* Get the child FPU state. */ return copy_regset_to_user(child, &user_mn10300_native_view, REGSET_FPU, 0, sizeof(struct fpu_state_struct), (void __user *)data); case PTRACE_SETFPREGS: /* Set the child FPU state. */ return copy_regset_from_user(child, &user_mn10300_native_view, REGSET_FPU, 0, sizeof(struct fpu_state_struct), (const void __user *)data); default: ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { int ret; unsigned long __user *datap = (unsigned long __user *)data; void *paddr = (void *)addr; switch (request) { case PTRACE_PEEKDATA: pr_debug("ptrace: PEEKDATA\n"); case PTRACE_PEEKTEXT: { unsigned long tmp = 0; int copied = 0, to_copy = sizeof(tmp); ret = -EIO; pr_debug("ptrace: PEEKTEXT at addr 0x%08lx + %i\n", addr, to_copy); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &tmp, to_copy, 0); if (copied) break; if (addr >= FIXED_CODE_START && addr + to_copy <= FIXED_CODE_END) { copy_from_user_page(0, 0, 0, &tmp, paddr, to_copy); copied = to_copy; } else if (addr >= BOOT_ROM_START) { memcpy(&tmp, paddr, to_copy); copied = to_copy; } break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp); if (copied == to_copy) ret = put_user(tmp, datap); break; } case PTRACE_POKEDATA: pr_debug("ptrace: PTRACE_PEEKDATA\n"); case PTRACE_POKETEXT: { int copied = 0, to_copy = sizeof(data); ret = -EIO; pr_debug("ptrace: POKETEXT at addr 0x%08lx + %i bytes %lx\n", addr, to_copy, data); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &data, to_copy, 1); break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(paddr, &data, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(paddr, &data, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d\n", copied); if (copied == to_copy) ret = 0; break; } case PTRACE_PEEKUSR: switch (addr) { #ifdef CONFIG_BINFMT_ELF_FDPIC case PT_FDPIC_EXEC: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_EXEC; goto case_default; case PT_FDPIC_INTERP: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_INTERP; goto case_default; #endif default: ret = get_reg(child, addr, datap); } pr_debug("ptrace: PEEKUSR reg %li with %#lx = %i\n", addr, data, ret); break; case PTRACE_POKEUSR: ret = put_reg(child, addr, data); pr_debug("ptrace: POKEUSR reg %li with %li = %i\n", addr, data, ret); break; case PTRACE_GETREGS: pr_debug("ptrace: PTRACE_GETREGS\n"); return copy_regset_to_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), datap); case PTRACE_SETREGS: pr_debug("ptrace: PTRACE_SETREGS\n"); return copy_regset_from_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), datap); case_default: default: ret = ptrace_request(child, request, addr, data); break; } return ret; }