diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/.gitignore | 3 | ||||
| -rw-r--r-- | arch/um/drivers/line.c | 4 | ||||
| -rw-r--r-- | arch/um/drivers/mconsole_kern.c | 2 | ||||
| -rw-r--r-- | arch/um/drivers/ubd_kern.c | 4 | ||||
| -rw-r--r-- | arch/um/include/asm/dma-mapping.h | 8 | ||||
| -rw-r--r-- | arch/um/include/asm/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/um/include/asm/ptrace-generic.h | 2 | ||||
| -rw-r--r-- | arch/um/kernel/ptrace.c | 70 | ||||
| -rw-r--r-- | arch/um/kernel/syscall.c | 45 | ||||
| -rw-r--r-- | arch/um/sys-i386/Makefile | 2 | ||||
| -rw-r--r-- | arch/um/sys-i386/asm/elf.h | 43 | ||||
| -rw-r--r-- | arch/um/sys-i386/elfcore.c | 83 | ||||
| -rw-r--r-- | arch/um/sys-i386/shared/sysdep/syscalls.h | 2 | ||||
| -rw-r--r-- | arch/um/sys-i386/sys_call_table.S | 2 | ||||
| -rw-r--r-- | arch/um/sys-i386/syscalls.c | 137 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/Makefile | 3 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/syscall_table.c | 5 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/syscalls.c | 14 |
18 files changed, 115 insertions, 316 deletions
diff --git a/arch/um/.gitignore b/arch/um/.gitignore new file mode 100644 index 00000000000..a73d3a1cc74 --- /dev/null +++ b/arch/um/.gitignore @@ -0,0 +1,3 @@ +kernel/config.c +kernel/config.tmp +kernel/vmlinux.lds diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index cf8a97f3451..64cda95f59c 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -18,10 +18,10 @@ static irqreturn_t line_interrupt(int irq, void *data) { struct chan *chan = data; struct line *line = chan->line; - struct tty_struct *tty = line->tty; + struct tty_struct *tty; if (line) - chan_interrupt(&line->chan_list, &line->task, tty, irq); + chan_interrupt(&line->chan_list, &line->task, line->tty, irq); return IRQ_HANDLED; } diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index 3b3c36601a7..de317d0c329 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -140,7 +140,7 @@ void mconsole_proc(struct mc_request *req) goto out; } - err = may_open(&nd.path, MAY_READ, FMODE_READ); + err = may_open(&nd.path, MAY_READ, O_RDONLY); if (result) { mconsole_reply(req, "Failed to open file", 1, 0); path_put(&nd.path); diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 5ff554677f4..c1ff6903b62 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -747,7 +747,7 @@ static int ubd_open_dev(struct ubd *ubd_dev) ubd_dev->fd = fd; if(ubd_dev->cow.file != NULL){ - blk_queue_max_sectors(ubd_dev->queue, 8 * sizeof(long)); + blk_queue_max_hw_sectors(ubd_dev->queue, 8 * sizeof(long)); err = -ENOMEM; ubd_dev->cow.bitmap = vmalloc(ubd_dev->cow.bitmap_len); @@ -849,7 +849,7 @@ static int ubd_add(int n, char **error_out) } ubd_dev->queue->queuedata = ubd_dev; - blk_queue_max_hw_segments(ubd_dev->queue, MAX_SG); + blk_queue_max_segments(ubd_dev->queue, MAX_SG); err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]); if(err){ *error_out = "Failed to register device"; diff --git a/arch/um/include/asm/dma-mapping.h b/arch/um/include/asm/dma-mapping.h index 378de4bbf49..b948c14a786 100644 --- a/arch/um/include/asm/dma-mapping.h +++ b/arch/um/include/asm/dma-mapping.h @@ -104,14 +104,6 @@ dma_get_cache_alignment(void) } static inline void -dma_sync_single_range(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - BUG(); -} - -static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h index 9ce3f165111..a9f7251b4a8 100644 --- a/arch/um/include/asm/pgtable.h +++ b/arch/um/include/asm/pgtable.h @@ -345,7 +345,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) struct mm_struct; extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); -#define update_mmu_cache(vma,address,pte) do ; while (0) +#define update_mmu_cache(vma,address,ptep) do ; while (0) /* Encode and de-code a swap entry */ #define __swp_type(x) (((x).val >> 4) & 0x3f) diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h index 6c8899013c9..2cd899f75a3 100644 --- a/arch/um/include/asm/ptrace-generic.h +++ b/arch/um/include/asm/ptrace-generic.h @@ -16,6 +16,8 @@ struct pt_regs { struct uml_pt_regs regs; }; +#define arch_has_single_step() (1) + #define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS } #define PT_REGS_IP(r) UPT_IP(&(r)->regs) diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 8e3d69e4fcb..484509948ee 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -12,16 +12,25 @@ #endif #include "skas_ptrace.h" -static inline void set_singlestepping(struct task_struct *child, int on) + + +void user_enable_single_step(struct task_struct *child) { - if (on) - child->ptrace |= PT_DTRACE; - else - child->ptrace &= ~PT_DTRACE; + child->ptrace |= PT_DTRACE; child->thread.singlestep_syscall = 0; #ifdef SUBARCH_SET_SINGLESTEPPING - SUBARCH_SET_SINGLESTEPPING(child, on); + SUBARCH_SET_SINGLESTEPPING(child, 1); +#endif +} + +void user_disable_single_step(struct task_struct *child) +{ + child->ptrace &= ~PT_DTRACE; + child->thread.singlestep_syscall = 0; + +#ifdef SUBARCH_SET_SINGLESTEPPING + SUBARCH_SET_SINGLESTEPPING(child, 0); #endif } @@ -30,7 +39,7 @@ static inline void set_singlestepping(struct task_struct *child, int on) */ void ptrace_disable(struct task_struct *child) { - set_singlestepping(child,0); + user_disable_single_step(child); } extern int peek_user(struct task_struct * child, long addr, long data); @@ -69,53 +78,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ret = -EIO; break; - /* continue and stop at next (return from) syscall */ - case PTRACE_SYSCALL: - /* restart after signal. */ - case PTRACE_CONT: { - ret = -EIO; - if (!valid_signal(data)) - break; - - set_singlestepping(child, 0); - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - wake_up_process(child); - ret = 0; - break; - } - -/* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: { - ret = 0; - if (child->exit_state == EXIT_ZOMBIE) /* already dead */ - break; - - set_singlestepping(child, 0); - child->exit_code = SIGKILL; - wake_up_process(child); - break; - } - - case PTRACE_SINGLESTEP: { /* set the trap flag. */ - ret = -EIO; - if (!valid_signal(data)) - break; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - set_singlestepping(child, 1); - child->exit_code = data; - /* give it a chance to run. */ - wake_up_process(child); - ret = 0; - break; - } - #ifdef PTRACE_GETREGS case PTRACE_GETREGS: { /* Get all gp regs from the child. */ if (!access_ok(VERIFY_WRITE, p, MAX_REG_OFFSET)) { diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c index cccab850c27..4393173923f 100644 --- a/arch/um/kernel/syscall.c +++ b/arch/um/kernel/syscall.c @@ -51,51 +51,6 @@ long old_mmap(unsigned long addr, unsigned long len, return err; } -long sys_uname(struct old_utsname __user * name) -{ - long err; - if (!name) - return -EFAULT; - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof (*name)); - up_read(&uts_sem); - return err?-EFAULT:0; -} - -long sys_olduname(struct oldold_utsname __user * name) -{ - long error; - - if (!name) - return -EFAULT; - if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname))) - return -EFAULT; - - down_read(&uts_sem); - - error = __copy_to_user(&name->sysname, &utsname()->sysname, - __OLD_UTS_LEN); - error |= __put_user(0, name->sysname + __OLD_UTS_LEN); - error |= __copy_to_user(&name->nodename, &utsname()->nodename, - __OLD_UTS_LEN); - error |= __put_user(0, name->nodename + __OLD_UTS_LEN); - error |= __copy_to_user(&name->release, &utsname()->release, - __OLD_UTS_LEN); - error |= __put_user(0, name->release + __OLD_UTS_LEN); - error |= __copy_to_user(&name->version, &utsname()->version, - __OLD_UTS_LEN); - error |= __put_user(0, name->version + __OLD_UTS_LEN); - error |= __copy_to_user(&name->machine, &utsname()->machine, - __OLD_UTS_LEN); - error |= __put_user(0, name->machine + __OLD_UTS_LEN); - - up_read(&uts_sem); - - error = error ? -EFAULT : 0; - - return error; -} - int kernel_execve(const char *filename, char *const argv[], char *const envp[]) { mm_segment_t fs; diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile index 1b549bca464..804b28dd032 100644 --- a/arch/um/sys-i386/Makefile +++ b/arch/um/sys-i386/Makefile @@ -6,6 +6,8 @@ obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \ ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \ sys_call_table.o tls.o +obj-$(CONFIG_BINFMT_ELF) += elfcore.o + subarch-obj-y = lib/semaphore_32.o lib/string_32.o subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o subarch-obj-$(CONFIG_MODULES) += kernel/module.o diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h index 770885472ed..e64cd41d7ba 100644 --- a/arch/um/sys-i386/asm/elf.h +++ b/arch/um/sys-i386/asm/elf.h @@ -116,47 +116,4 @@ do { \ } \ } while (0) -/* - * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out - * extra segments containing the vsyscall DSO contents. Dumping its - * contents makes post-mortem fully interpretable later without matching up - * the same kernel and hardware config to see what PC values meant. - * Dumping its extra ELF program headers includes all the other information - * a debugger needs to easily find how the vsyscall DSO was being used. - */ -#define ELF_CORE_EXTRA_PHDRS \ - (vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 ) - -#define ELF_CORE_WRITE_EXTRA_PHDRS \ -if ( vsyscall_ehdr ) { \ - const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ - const struct elf_phdr *const phdrp = \ - (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ - int i; \ - Elf32_Off ofs = 0; \ - for (i = 0; i < ehdrp->e_phnum; ++i) { \ - struct elf_phdr phdr = phdrp[i]; \ - if (phdr.p_type == PT_LOAD) { \ - ofs = phdr.p_offset = offset; \ - offset += phdr.p_filesz; \ - } \ - else \ - phdr.p_offset += ofs; \ - phdr.p_paddr = 0; /* match other core phdrs */ \ - DUMP_WRITE(&phdr, sizeof(phdr)); \ - } \ -} -#define ELF_CORE_WRITE_EXTRA_DATA \ -if ( vsyscall_ehdr ) { \ - const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr; \ - const struct elf_phdr *const phdrp = \ - (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); \ - int i; \ - for (i = 0; i < ehdrp->e_phnum; ++i) { \ - if (phdrp[i].p_type == PT_LOAD) \ - DUMP_WRITE((void *) phdrp[i].p_vaddr, \ - phdrp[i].p_filesz); \ - } \ -} - #endif diff --git a/arch/um/sys-i386/elfcore.c b/arch/um/sys-i386/elfcore.c new file mode 100644 index 00000000000..6bb49b687c9 --- /dev/null +++ b/arch/um/sys-i386/elfcore.c @@ -0,0 +1,83 @@ +#include <linux/elf.h> +#include <linux/coredump.h> +#include <linux/fs.h> +#include <linux/mm.h> + +#include <asm/elf.h> + + +Elf32_Half elf_core_extra_phdrs(void) +{ + return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0; +} + +int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size, + unsigned long limit) +{ + if ( vsyscall_ehdr ) { + const struct elfhdr *const ehdrp = + (struct elfhdr *) vsyscall_ehdr; + const struct elf_phdr *const phdrp = + (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); + int i; + Elf32_Off ofs = 0; + + for (i = 0; i < ehdrp->e_phnum; ++i) { + struct elf_phdr phdr = phdrp[i]; + + if (phdr.p_type == PT_LOAD) { + ofs = phdr.p_offset = offset; + offset += phdr.p_filesz; + } else { + phdr.p_offset += ofs; + } + phdr.p_paddr = 0; /* match other core phdrs */ + *size += sizeof(phdr); + if (*size > limit + || !dump_write(file, &phdr, sizeof(phdr))) + return 0; + } + } + return 1; +} + +int elf_core_write_extra_data(struct file *file, size_t *size, + unsigned long limit) +{ + if ( vsyscall_ehdr ) { + const struct elfhdr *const ehdrp = + (struct elfhdr *) vsyscall_ehdr; + const struct elf_phdr *const phdrp = + (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); + int i; + + for (i = 0; i < ehdrp->e_phnum; ++i) { + if (phdrp[i].p_type == PT_LOAD) { + void *addr = (void *) phdrp[i].p_vaddr; + size_t filesz = phdrp[i].p_filesz; + + *size += filesz; + if (*size > limit + || !dump_write(file, addr, filesz)) + return 0; + } + } + } + return 1; +} + +size_t elf_core_extra_data_size(void) +{ + if ( vsyscall_ehdr ) { + const struct elfhdr *const ehdrp = + (struct elfhdr *)vsyscall_ehdr; + const struct elf_phdr *const phdrp = + (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); + int i; + + for (i = 0; i < ehdrp->e_phnum; ++i) + if (phdrp[i].p_type == PT_LOAD) + return (size_t) phdrp[i].p_filesz; + } + return 0; +} diff --git a/arch/um/sys-i386/shared/sysdep/syscalls.h b/arch/um/sys-i386/shared/sysdep/syscalls.h index e7787679e31..05cb796aecb 100644 --- a/arch/um/sys-i386/shared/sysdep/syscalls.h +++ b/arch/um/sys-i386/shared/sysdep/syscalls.h @@ -13,8 +13,6 @@ typedef long syscall_handler_t(struct pt_regs); */ extern syscall_handler_t sys_rt_sigaction; -extern syscall_handler_t old_mmap_i386; - extern syscall_handler_t *sys_call_table[]; #define EXECUTE_SYSCALL(syscall, regs) \ diff --git a/arch/um/sys-i386/sys_call_table.S b/arch/um/sys-i386/sys_call_table.S index c6260dd6ebb..de274071455 100644 --- a/arch/um/sys-i386/sys_call_table.S +++ b/arch/um/sys-i386/sys_call_table.S @@ -7,7 +7,7 @@ #define sys_vm86old sys_ni_syscall #define sys_vm86 sys_ni_syscall -#define old_mmap old_mmap_i386 +#define old_mmap sys_old_mmap #define ptregs_fork sys_fork #define ptregs_execve sys_execve diff --git a/arch/um/sys-i386/syscalls.c b/arch/um/sys-i386/syscalls.c index 857ca0b3bde..70ca357393b 100644 --- a/arch/um/sys-i386/syscalls.c +++ b/arch/um/sys-i386/syscalls.c @@ -12,57 +12,6 @@ #include "asm/unistd.h" /* - * Perform the select(nd, in, out, ex, tv) and mmap() system - * calls. Linux/i386 didn't use to be able to handle more than - * 4 system call parameters, so these system calls used a memory - * block for parameter passing.. - */ - -struct mmap_arg_struct { - unsigned long addr; - unsigned long len; - unsigned long prot; - unsigned long flags; - unsigned long fd; - unsigned long offset; -}; - -extern int old_mmap(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long offset); - -long old_mmap_i386(struct mmap_arg_struct __user *arg) -{ - struct mmap_arg_struct a; - int err = -EFAULT; - - if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - err = old_mmap(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); - out: - return err; -} - -struct sel_arg_struct { - unsigned long n; - fd_set __user *inp; - fd_set __user *outp; - fd_set __user *exp; - struct timeval __user *tvp; -}; - -long old_select(struct sel_arg_struct __user *arg) -{ - struct sel_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - /* sys_select() does the appropriate kernel locking */ - return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); -} - -/* * The prototype on i386 is: * * int clone(int flags, void * child_stack, int * parent_tidptr, struct user_desc * newtls, int * child_tidptr) @@ -85,92 +34,6 @@ long sys_clone(unsigned long clone_flags, unsigned long newsp, return ret; } -/* - * sys_ipc() is the de-multiplexer for the SysV IPC calls.. - * - * This is really horribly ugly. - */ -long sys_ipc (uint call, int first, int second, - int third, void __user *ptr, long fifth) -{ - int version, ret; - - version = call >> 16; /* hack for backward compatibility */ - call &= 0xffff; - - switch (call) { - case SEMOP: - return sys_semtimedop(first, (struct sembuf __user *) ptr, - second, NULL); - case SEMTIMEDOP: - return sys_semtimedop(first, (struct sembuf __user *) ptr, - second, - (const struct timespec __user *) fifth); - case SEMGET: - return sys_semget (first, second, third); - case SEMCTL: { - union semun fourth; - if (!ptr) - return -EINVAL; - if (get_user(fourth.__pad, (void __user * __user *) ptr)) - return -EFAULT; - return sys_semctl (first, second, third, fourth); - } - - case MSGSND: - return sys_msgsnd (first, (struct msgbuf *) ptr, - second, third); - case MSGRCV: - switch (version) { - case 0: { - struct ipc_kludge tmp; - if (!ptr) - return -EINVAL; - - if (copy_from_user(&tmp, - (struct ipc_kludge *) ptr, - sizeof (tmp))) - return -EFAULT; - return sys_msgrcv (first, tmp.msgp, second, - tmp.msgtyp, third); - } - default: - panic("msgrcv with version != 0"); - return sys_msgrcv (first, - (struct msgbuf *) ptr, - second, fifth, third); - } - case MSGGET: - return sys_msgget ((key_t) first, second); - case MSGCTL: - return sys_msgctl (first, second, (struct msqid_ds *) ptr); - - case SHMAT: - switch (version) { - default: { - ulong raddr; - ret = do_shmat (first, (char *) ptr, second, &raddr); - if (ret) - return ret; - return put_user (raddr, (ulong *) third); - } - case 1: /* iBCS2 emulator entry point */ - if (!segment_eq(get_fs(), get_ds())) - return -EINVAL; - return do_shmat (first, (char *) ptr, second, (ulong *) third); - } - case SHMDT: - return sys_shmdt ((char *)ptr); - case SHMGET: - return sys_shmget (first, second, third); - case SHMCTL: - return sys_shmctl (first, second, - (struct shmid_ds *) ptr); - default: - return -ENOSYS; - } -} - long sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact) { diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index 2201e9c20e4..c1ea9eb0446 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -8,7 +8,8 @@ obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \ setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \ sysrq.o ksyms.o tls.o -subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o +subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \ + lib/rwsem_64.o subarch-obj-$(CONFIG_MODULES) += kernel/module.o ldt-y = ../sys-i386/ldt.o diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c index dd21d69715e..47d469e7e7c 100644 --- a/arch/um/sys-x86_64/syscall_table.c +++ b/arch/um/sys-x86_64/syscall_table.c @@ -26,11 +26,6 @@ /* On UML we call it this way ("old" means it's not mmap2) */ #define sys_mmap old_mmap -/* - * On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. - * See arch/x86_64/kernel/sys_x86_64.c - */ -#define sys_uname sys_uname64 #define stub_clone sys_clone #define stub_fork sys_fork diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c index f1199fd34d3..f3d82bb6e15 100644 --- a/arch/um/sys-x86_64/syscalls.c +++ b/arch/um/sys-x86_64/syscalls.c @@ -12,20 +12,6 @@ #include "asm/uaccess.h" #include "os.h" -asmlinkage long sys_uname64(struct new_utsname __user * name) -{ - int err; - - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof (*name)); - up_read(&uts_sem); - - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - - return err ? -EFAULT : 0; -} - long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) { unsigned long *ptr = addr, tmp; |