[PATCH v2] unify sys_pipe implementation
From: Ulrich Drepper
Date: Sat May 03 2008 - 14:01:29 EST
The second version of this patch with Linus' comments addressed. I've
changed the code for a few architectures to use a new name (<arch>_pipe
instead of sys_pipe) as per Linus' suggestion. I haven't touched MIPS
and Sparc, they use too much magic in this area. Should be easy enough
for the arch maintainer to clean up. sys_pipe is now unconditionally
created in fs/pipe.c and they will lead to link errors in case the
arch code isn't cleaned up.
Some arch maintainers might want to take a look at their remaining
special versions. The cris version, for instance, only differs from
the generic version in that it takes the BKL. Is this still needed
these days?
arch/alpha/kernel/entry.S | 8 ++++----
arch/alpha/kernel/systbls.S | 2 +-
arch/arm/kernel/sys_arm.c | 17 -----------------
arch/avr32/kernel/sys_avr32.c | 13 -------------
arch/blackfin/kernel/sys_bfin.c | 17 -----------------
arch/cris/arch-v10/kernel/entry.S | 2 +-
arch/cris/arch-v32/kernel/entry.S | 2 +-
arch/cris/kernel/sys_cris.c | 4 ++--
arch/frv/kernel/sys_frv.c | 17 -----------------
arch/h8300/kernel/sys_h8300.c | 17 -----------------
arch/ia64/kernel/entry.S | 2 +-
arch/ia64/kernel/sys_ia64.c | 2 +-
arch/m32r/kernel/sys_m32r.c | 4 ++--
arch/m32r/kernel/syscall_table.S | 2 +-
arch/m68k/kernel/sys_m68k.c | 17 -----------------
arch/m68knommu/kernel/sys_m68k.c | 17 -----------------
arch/mn10300/kernel/sys_mn10300.c | 17 -----------------
arch/parisc/kernel/sys_parisc.c | 13 -------------
arch/powerpc/kernel/syscalls.c | 17 -----------------
arch/s390/kernel/entry.h | 1 -
arch/s390/kernel/sys_s390.c | 17 -----------------
arch/sh/kernel/sys_sh32.c | 4 ++--
arch/sh/kernel/sys_sh64.c | 17 -----------------
arch/sh/kernel/syscalls_32.S | 2 +-
arch/um/kernel/syscall.c | 17 -----------------
arch/v850/kernel/syscalls.c | 17 -----------------
arch/x86/kernel/sys_i386_32.c | 17 -----------------
arch/x86/kernel/sys_x86_64.c | 17 -----------------
fs/pipe.c | 17 +++++++++++++++++
include/asm-ia64/unistd.h | 2 +-
include/asm-powerpc/syscalls.h | 2 +-
31 files changed, 36 insertions(+), 284 deletions(-)
Signed-off-by: Ulrich Drepper <drepper@xxxxxxxxxx>
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 5fc61e2..c7a72a5 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -894,9 +894,9 @@ sys_getxpid:
.end sys_getxpid
.align 4
- .globl sys_pipe
- .ent sys_pipe
-sys_pipe:
+ .globl alpha_pipe
+ .ent alpha_pipe
+alpha_pipe:
lda $sp, -16($sp)
stq $26, 0($sp)
.prologue 0
@@ -914,7 +914,7 @@ sys_pipe:
stq $1, 80+16($sp)
1: lda $sp, 16($sp)
ret
-.end sys_pipe
+.end alpha_pipe
.align 4
.globl sys_execve
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index ba914af..863f23a 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -52,7 +52,7 @@ sys_call_table:
.quad sys_setpgid
.quad alpha_ni_syscall /* 40 */
.quad sys_dup
- .quad sys_pipe
+ .quad alpha_pipe
.quad osf_set_program_attributes
.quad alpha_ni_syscall
.quad sys_open /* 45 */
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 9bd1870..0128687 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -34,23 +34,6 @@ extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
unsigned long new_len, unsigned long flags,
unsigned long new_addr);
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
inline long do_mmap2(
unsigned long addr, unsigned long len,
diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c
index 8deb600..8e8911e 100644
--- a/arch/avr32/kernel/sys_avr32.c
+++ b/arch/avr32/kernel/sys_avr32.c
@@ -14,19 +14,6 @@
#include <asm/mman.h>
#include <asm/uaccess.h>
-asmlinkage int sys_pipe(unsigned long __user *filedes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(filedes, fd, sizeof(fd)))
- error = -EFAULT;
- }
- return error;
-}
-
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, off_t offset)
diff --git a/arch/blackfin/kernel/sys_bfin.c b/arch/blackfin/kernel/sys_bfin.c
index efb7b25..fce49d7 100644
--- a/arch/blackfin/kernel/sys_bfin.c
+++ b/arch/blackfin/kernel/sys_bfin.c
@@ -45,23 +45,6 @@
#include <asm/cacheflush.h>
#include <asm/dma.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2 * sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
static inline long
do_mmap2(unsigned long addr, unsigned long len,
diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S
index 3a65f32..c0811c7 100644
--- a/arch/cris/arch-v10/kernel/entry.S
+++ b/arch/cris/arch-v10/kernel/entry.S
@@ -644,7 +644,7 @@ sys_call_table:
.long sys_mkdir
.long sys_rmdir /* 40 */
.long sys_dup
- .long sys_pipe
+ .long cris_pipe
.long sys_times
.long sys_ni_syscall /* old prof syscall holder */
.long sys_brk /* 45 */
diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
index eebbaba..adbc57a 100644
--- a/arch/cris/arch-v32/kernel/entry.S
+++ b/arch/cris/arch-v32/kernel/entry.S
@@ -567,7 +567,7 @@ sys_call_table:
.long sys_mkdir
.long sys_rmdir /* 40 */
.long sys_dup
- .long sys_pipe
+ .long cris_pipe
.long sys_times
.long sys_ni_syscall /* old prof syscall holder */
.long sys_brk /* 45 */
diff --git a/arch/cris/kernel/sys_cris.c b/arch/cris/kernel/sys_cris.c
index 8b99841..0e7f220 100644
--- a/arch/cris/kernel/sys_cris.c
+++ b/arch/cris/kernel/sys_cris.c
@@ -28,10 +28,10 @@
#include <asm/segment.h>
/*
- * sys_pipe() is the normal C calling standard for creating
+ * cris_pipe() is the normal C calling standard for creating
* a pipe. It's not the way Unix traditionally does this, though.
*/
-asmlinkage int sys_pipe(unsigned long __user * fildes)
+asmlinkage int cris_pipe(unsigned long __user * fildes)
{
int fd[2];
int error;
diff --git a/arch/frv/kernel/sys_frv.c b/arch/frv/kernel/sys_frv.c
index 04c6b16..49b2cf2 100644
--- a/arch/frv/kernel/sys_frv.c
+++ b/arch/frv/kernel/sys_frv.c
@@ -28,23 +28,6 @@
#include <asm/setup.h>
#include <asm/uaccess.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage long sys_pipe(unsigned long __user * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c
index 00608be..2745656 100644
--- a/arch/h8300/kernel/sys_h8300.c
+++ b/arch/h8300/kernel/sys_h8300.c
@@ -27,23 +27,6 @@
#include <asm/traps.h>
#include <asm/unistd.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
static inline long do_mmap2(
unsigned long addr, unsigned long len,
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e49ad8c..f567bcc 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1402,7 +1402,7 @@ sys_call_table:
data8 sys_mkdir // 1055
data8 sys_rmdir
data8 sys_dup
- data8 sys_pipe
+ data8 ia64_pipe
data8 sys_times
data8 ia64_brk // 1060
data8 sys_setgid
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index 1eda194..6070826 100644
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -154,7 +154,7 @@ out:
* and r9) as this is faster than doing a copy_to_user().
*/
asmlinkage long
-sys_pipe (void)
+ia64_pipe (void)
{
struct pt_regs *regs = task_pt_regs(current);
int fd[2];
diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c
index 6d7a80f..7475510 100644
--- a/arch/m32r/kernel/sys_m32r.c
+++ b/arch/m32r/kernel/sys_m32r.c
@@ -77,11 +77,11 @@ asmlinkage int sys_tas(int __user *addr)
}
/*
- * sys_pipe() is the normal C calling standard for creating
+ * m32r_pipe() is the normal C calling standard for creating
* a pipe. It's not the way Unix traditionally does this, though.
*/
asmlinkage int
-sys_pipe(unsigned long r0, unsigned long r1, unsigned long r2,
+m32r_pipe(unsigned long r0, unsigned long r1, unsigned long r2,
unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, struct pt_regs regs)
{
diff --git a/arch/m32r/kernel/syscall_table.S b/arch/m32r/kernel/syscall_table.S
index aa3bf4c..911913d 100644
--- a/arch/m32r/kernel/syscall_table.S
+++ b/arch/m32r/kernel/syscall_table.S
@@ -41,7 +41,7 @@ ENTRY(sys_call_table)
.long sys_mkdir
.long sys_rmdir /* 40 */
.long sys_dup
- .long sys_pipe
+ .long m32r_pipe
.long sys_times
.long sys_ni_syscall /* old prof syscall holder */
.long sys_brk /* 45 */
diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index e892f17..7f54efa 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -30,23 +30,6 @@
#include <asm/page.h>
#include <asm/unistd.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long __user * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
static inline long do_mmap2(
unsigned long addr, unsigned long len,
diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c
index 65f7a95..7002816 100644
--- a/arch/m68knommu/kernel/sys_m68k.c
+++ b/arch/m68knommu/kernel/sys_m68k.c
@@ -28,23 +28,6 @@
#include <asm/cacheflush.h>
#include <asm/unistd.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
static inline long do_mmap2(
unsigned long addr, unsigned long len,
diff --git a/arch/mn10300/kernel/sys_mn10300.c b/arch/mn10300/kernel/sys_mn10300.c
index 5f17a1e..bca5a84 100644
--- a/arch/mn10300/kernel/sys_mn10300.c
+++ b/arch/mn10300/kernel/sys_mn10300.c
@@ -29,23 +29,6 @@
#define MIN_MAP_ADDR PAGE_SIZE /* minimum fixed mmap address */
/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage long sys_pipe(unsigned long __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2 * sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
-/*
* memory mapping syscall
*/
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 4f58921..71b3195 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -33,19 +33,6 @@
#include <linux/utsname.h>
#include <linux/personality.h>
-int sys_pipe(int __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
static unsigned long get_unshared_area(unsigned long addr, unsigned long len)
{
struct vm_area_struct *vma;
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index e722a4e..4fe69ca 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -136,23 +136,6 @@ int sys_ipc(uint call, int first, unsigned long second, long third,
return ret;
}
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-int sys_pipe(int __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
static inline unsigned long do_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off, int shift)
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index 6b18963..9febc89 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -30,7 +30,6 @@ struct fadvise64_64_args;
struct old_sigaction;
struct sel_arg_struct;
-long sys_pipe(unsigned long __user *fildes);
long sys_mmap2(struct mmap_arg_struct __user *arg);
long old_mmap(struct mmap_arg_struct __user *arg);
long sys_ipc(uint call, int first, unsigned long second,
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 988d0d6..5fdb799 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -32,23 +32,6 @@
#include <asm/uaccess.h>
#include "entry.h"
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage long sys_pipe(unsigned long __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
/* common code for old and new mmaps */
static inline long do_mmap2(
unsigned long addr, unsigned long len,
diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c
index 125e493..da25089 100644
--- a/arch/sh/kernel/sys_sh32.c
+++ b/arch/sh/kernel/sys_sh32.c
@@ -18,10 +18,10 @@
#include <asm/unistd.h>
/*
- * sys_pipe() is the normal C calling standard for creating
+ * sh32_pipe() is the normal C calling standard for creating
* a pipe. It's not the way Unix traditionally does this, though.
*/
-asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
+asmlinkage int sh32_pipe(unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7,
struct pt_regs __regs)
{
diff --git a/arch/sh/kernel/sys_sh64.c b/arch/sh/kernel/sys_sh64.c
index 578004d..91fb844 100644
--- a/arch/sh/kernel/sys_sh64.c
+++ b/arch/sh/kernel/sys_sh64.c
@@ -31,23 +31,6 @@
#include <asm/unistd.h>
/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
-/*
* Do a system call from kernel instead of calling sys_execve so we
* end up with proper pt_regs.
*/
diff --git a/arch/sh/kernel/syscalls_32.S b/arch/sh/kernel/syscalls_32.S
index a46cc3a..b17cef2 100644
--- a/arch/sh/kernel/syscalls_32.S
+++ b/arch/sh/kernel/syscalls_32.S
@@ -58,7 +58,7 @@ ENTRY(sys_call_table)
.long sys_mkdir
.long sys_rmdir /* 40 */
.long sys_dup
- .long sys_pipe
+ .long sh32_pipe
.long sys_times
.long sys_ni_syscall /* old prof syscall holder */
.long sys_brk /* 45 */
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index 9cffc62..128ee85 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -73,23 +73,6 @@ long old_mmap(unsigned long addr, unsigned long len,
out:
return err;
}
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-long sys_pipe(unsigned long __user * fildes)
-{
- int fd[2];
- long error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, sizeof(fd)))
- error = -EFAULT;
- }
- return error;
-}
-
long sys_uname(struct old_utsname __user * name)
{
diff --git a/arch/v850/kernel/syscalls.c b/arch/v850/kernel/syscalls.c
index 003db9c..1a83daf 100644
--- a/arch/v850/kernel/syscalls.c
+++ b/arch/v850/kernel/syscalls.c
@@ -132,23 +132,6 @@ sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
return ret;
}
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way unix traditionally does this, though.
- */
-int sys_pipe (int *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe (fd);
- if (!error) {
- if (copy_to_user (fildes, fd, 2*sizeof (int)))
- error = -EFAULT;
- }
- return error;
-}
-
static inline unsigned long
do_mmap2 (unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c
index a86d26f..d2ab52c 100644
--- a/arch/x86/kernel/sys_i386_32.c
+++ b/arch/x86/kernel/sys_i386_32.c
@@ -22,23 +22,6 @@
#include <asm/uaccess.h>
#include <asm/unistd.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage int sys_pipe(unsigned long __user * fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
index bd802a5..3b360ef 100644
--- a/arch/x86/kernel/sys_x86_64.c
+++ b/arch/x86/kernel/sys_x86_64.c
@@ -17,23 +17,6 @@
#include <asm/uaccess.h>
#include <asm/ia32.h>
-/*
- * sys_pipe() is the normal C calling standard for creating
- * a pipe. It's not the way Unix traditionally does this, though.
- */
-asmlinkage long sys_pipe(int __user *fildes)
-{
- int fd[2];
- int error;
-
- error = do_pipe(fd);
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off)
{
diff --git a/fs/pipe.c b/fs/pipe.c
index f73492b..8400ebf 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1076,6 +1076,23 @@ int do_pipe(int *fd)
}
/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way Unix traditionally does this, though.
+ */
+asmlinkage long sys_pipe(int __user *fildes)
+{
+ int fd[2];
+ int error;
+
+ error = do_pipe(fd);
+ if (!error) {
+ if (copy_to_user(fildes, fd, sizeof(fd)))
+ error = -EFAULT;
+ }
+ return error;
+}
+
+/*
* pipefs should _never_ be mounted by userland - too much of security hassle,
* no real gain from having the whole whorehouse mounted. So we don't need
* any operations on the root directory. However, we need a non-trivial
diff --git a/include/asm-ia64/unistd.h b/include/asm-ia64/unistd.h
index e603147..74350b2 100644
--- a/include/asm-ia64/unistd.h
+++ b/include/asm-ia64/unistd.h
@@ -357,7 +357,7 @@ struct pt_regs;
struct sigaction;
long sys_execve(char __user *filename, char __user * __user *argv,
char __user * __user *envp, struct pt_regs *regs);
-asmlinkage long sys_pipe(void);
+asmlinkage long ia64_pipe(void);
asmlinkage long sys_rt_sigaction(int sig,
const struct sigaction __user *act,
struct sigaction __user *oact,
diff --git a/include/asm-powerpc/syscalls.h b/include/asm-powerpc/syscalls.h
index b3ca41f..2b8a458 100644
--- a/include/asm-powerpc/syscalls.h
+++ b/include/asm-powerpc/syscalls.h
@@ -30,7 +30,7 @@ asmlinkage int sys_fork(unsigned long p1, unsigned long p2,
asmlinkage int sys_vfork(unsigned long p1, unsigned long p2,
unsigned long p3, unsigned long p4, unsigned long p5,
unsigned long p6, struct pt_regs *regs);
-asmlinkage int sys_pipe(int __user *fildes);
+asmlinkage long sys_pipe(int __user *fildes);
asmlinkage long sys_rt_sigaction(int sig,
const struct sigaction __user *act,
struct sigaction __user *oact, size_t sigsetsize);
--
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