From 853b3da10d617f08340e5fe569c99e7b54f2a568 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Dec 2009 00:34:13 -0500 Subject: [PATCH] sanitize do_pipe_flags() callers in arch * hpux_pipe() - no need to take BKL * sys32_pipe() in arch/x86/ia32 and xtensa_pipe() in arch/xtensa - no need at all, since both functions are open-coded sys_pipe() Signed-off-by: Al Viro --- arch/parisc/hpux/sys_hpux.c | 7 +------ arch/x86/include/asm/sys_ia32.h | 1 - arch/xtensa/include/asm/syscall.h | 1 - arch/xtensa/include/asm/unistd.h | 2 +- arch/xtensa/kernel/syscall.c | 18 ------------------ 5 files changed, 2 insertions(+), 27 deletions(-) diff --git a/arch/parisc/hpux/sys_hpux.c b/arch/parisc/hpux/sys_hpux.c index 18072e03a01..92343bd35fa 100644 --- a/arch/parisc/hpux/sys_hpux.c +++ b/arch/parisc/hpux/sys_hpux.c @@ -445,12 +445,7 @@ done: int hpux_pipe(int *kstack_fildes) { - int error; - - lock_kernel(); - error = do_pipe_flags(kstack_fildes, 0); - unlock_kernel(); - return error; + return do_pipe_flags(kstack_fildes, 0); } /* lies - says it works, but it really didn't lock anything */ diff --git a/arch/x86/include/asm/sys_ia32.h b/arch/x86/include/asm/sys_ia32.h index 4a5a089e1c6..d5f69045c10 100644 --- a/arch/x86/include/asm/sys_ia32.h +++ b/arch/x86/include/asm/sys_ia32.h @@ -30,7 +30,6 @@ struct mmap_arg_struct; asmlinkage long sys32_mmap(struct mmap_arg_struct __user *); asmlinkage long sys32_mprotect(unsigned long, size_t, unsigned long); -asmlinkage long sys32_pipe(int __user *); struct sigaction32; struct old_sigaction32; asmlinkage long sys32_rt_sigaction(int, struct sigaction32 __user *, diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h index 4352dbe1186..efcf33b92e4 100644 --- a/arch/xtensa/include/asm/syscall.h +++ b/arch/xtensa/include/asm/syscall.h @@ -12,7 +12,6 @@ struct pt_regs; struct sigaction; asmlinkage long xtensa_execve(char*, char**, char**, struct pt_regs*); asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*); -asmlinkage long xtensa_pipe(int __user *); asmlinkage long xtensa_ptrace(long, long, long, long); asmlinkage long xtensa_sigreturn(struct pt_regs*); asmlinkage long xtensa_rt_sigreturn(struct pt_regs*); diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h index fbf318b3af3..528042c2951 100644 --- a/arch/xtensa/include/asm/unistd.h +++ b/arch/xtensa/include/asm/unistd.h @@ -94,7 +94,7 @@ __SYSCALL( 35, sys_readlink, 3) #define __NR_mknod 36 __SYSCALL( 36, sys_mknod, 3) #define __NR_pipe 37 -__SYSCALL( 37, xtensa_pipe, 1) +__SYSCALL( 37, sys_pipe, 1) #define __NR_unlink 38 __SYSCALL( 38, sys_unlink, 1) #define __NR_rmdir 39 diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c index 1e67bab775c..816e6d0d686 100644 --- a/arch/xtensa/kernel/syscall.c +++ b/arch/xtensa/kernel/syscall.c @@ -39,24 +39,6 @@ syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= { #include }; -/* - * xtensa_pipe() is the normal C calling standard for creating a pipe. It's not - * the way unix traditional does this, though. - */ - -asmlinkage long xtensa_pipe(int __user *userfds) -{ - int fd[2]; - int error; - - error = do_pipe_flags(fd, 0); - if (!error) { - if (copy_to_user(userfds, fd, 2 * sizeof(int))) - error = -EFAULT; - } - return error; -} - asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg) { unsigned long ret; -- 2.41.0