libc: Add ftruncate64 and improve 64-bit parameter syscall handling.
This patch improves the handling of 64-bit parameters in syscalls on ARM.
The ARM EABI mandates that 64-bit quantities be passed in even/odd register
pairs, which requires special treatment.
This allows us to simplify our implementations of pread() and pwrite()
and remove the C stubs for pread64() and pwrite64().
Also add ftruncate64() to <unistd.h>
Change-Id: I407e2fd223ba0093dd2d0b04c6152fadfc9ce3ef
Bug 3107933
diff --git a/libc/Android.mk b/libc/Android.mk
index 8a22918..6361ad9 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -39,12 +39,10 @@
unistd/perror.c \
unistd/popen.c \
unistd/pread.c \
- unistd/pread64.c \
unistd/pselect.c \
unistd/ptsname.c \
unistd/ptsname_r.c \
unistd/pwrite.c \
- unistd/pwrite64.c \
unistd/raise.c \
unistd/reboot.c \
unistd/recv.c \
diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 3023b13..5653c3c 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -85,8 +85,8 @@
# file descriptors
ssize_t read (int, void*, size_t) 3
ssize_t write (int, const void*, size_t) 4
-ssize_t __pread64:pread64 (int, void *, size_t, off_t, off_t) 180
-ssize_t __pwrite64:pwrite64 (int, void *, size_t, off_t, off_t) 181
+ssize_t pread64 (int, void *, size_t, off64_t) 180
+ssize_t pwrite64 (int, void *, size_t, off64_t) 181
int __open:open (const char*, int, mode_t) 5
int __openat:openat (int, const char*, int, mode_t) 322,295
int close (int) 6
@@ -116,6 +116,7 @@
int dup2(int, int) 63
int select:_newselect(int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *) 142
int ftruncate(int, off_t) 93
+int ftruncate64(int, off64_t) 194
int getdents:getdents64(unsigned int, struct dirent *, unsigned int) 217,220
int fsync(int) 118
int fdatasync(int) 148
diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index e25bb31..5210d6c 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -41,8 +41,8 @@
syscall_src += arch-arm/syscalls/acct.S
syscall_src += arch-arm/syscalls/read.S
syscall_src += arch-arm/syscalls/write.S
-syscall_src += arch-arm/syscalls/__pread64.S
-syscall_src += arch-arm/syscalls/__pwrite64.S
+syscall_src += arch-arm/syscalls/pread64.S
+syscall_src += arch-arm/syscalls/pwrite64.S
syscall_src += arch-arm/syscalls/__open.S
syscall_src += arch-arm/syscalls/__openat.S
syscall_src += arch-arm/syscalls/close.S
@@ -70,6 +70,7 @@
syscall_src += arch-arm/syscalls/dup2.S
syscall_src += arch-arm/syscalls/select.S
syscall_src += arch-arm/syscalls/ftruncate.S
+syscall_src += arch-arm/syscalls/ftruncate64.S
syscall_src += arch-arm/syscalls/getdents.S
syscall_src += arch-arm/syscalls/fsync.S
syscall_src += arch-arm/syscalls/fdatasync.S
diff --git a/libc/arch-arm/syscalls/ftruncate64.S b/libc/arch-arm/syscalls/ftruncate64.S
new file mode 100644
index 0000000..37b4744
--- /dev/null
+++ b/libc/arch-arm/syscalls/ftruncate64.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+ .text
+ .type ftruncate64, #function
+ .globl ftruncate64
+ .align 4
+ .fnstart
+
+ftruncate64:
+ .save {r4, r7}
+ stmfd sp!, {r4, r7}
+ ldr r7, =__NR_ftruncate64
+ swi #0
+ ldmfd sp!, {r4, r7}
+ movs r0, r0
+ bxpl lr
+ b __set_syscall_errno
+ .fnend
diff --git a/libc/arch-arm/syscalls/__pread64.S b/libc/arch-arm/syscalls/pread64.S
similarity index 85%
rename from libc/arch-arm/syscalls/__pread64.S
rename to libc/arch-arm/syscalls/pread64.S
index ea645e1..a54084c 100644
--- a/libc/arch-arm/syscalls/__pread64.S
+++ b/libc/arch-arm/syscalls/pread64.S
@@ -2,12 +2,12 @@
#include <sys/linux-syscalls.h>
.text
- .type __pread64, #function
- .globl __pread64
+ .type pread64, #function
+ .globl pread64
.align 4
.fnstart
-__pread64:
+pread64:
mov ip, sp
.save {r4, r5, r6, r7}
stmfd sp!, {r4, r5, r6, r7}
diff --git a/libc/arch-arm/syscalls/__pwrite64.S b/libc/arch-arm/syscalls/pwrite64.S
similarity index 85%
rename from libc/arch-arm/syscalls/__pwrite64.S
rename to libc/arch-arm/syscalls/pwrite64.S
index d1263be..f9d56b2 100644
--- a/libc/arch-arm/syscalls/__pwrite64.S
+++ b/libc/arch-arm/syscalls/pwrite64.S
@@ -2,12 +2,12 @@
#include <sys/linux-syscalls.h>
.text
- .type __pwrite64, #function
- .globl __pwrite64
+ .type pwrite64, #function
+ .globl pwrite64
.align 4
.fnstart
-__pwrite64:
+pwrite64:
mov ip, sp
.save {r4, r5, r6, r7}
stmfd sp!, {r4, r5, r6, r7}
diff --git a/libc/arch-sh/syscalls.mk b/libc/arch-sh/syscalls.mk
index 493f437..9575905 100644
--- a/libc/arch-sh/syscalls.mk
+++ b/libc/arch-sh/syscalls.mk
@@ -45,8 +45,8 @@
syscall_src += arch-sh/syscalls/acct.S
syscall_src += arch-sh/syscalls/read.S
syscall_src += arch-sh/syscalls/write.S
-syscall_src += arch-sh/syscalls/__pread64.S
-syscall_src += arch-sh/syscalls/__pwrite64.S
+syscall_src += arch-sh/syscalls/pread64.S
+syscall_src += arch-sh/syscalls/pwrite64.S
syscall_src += arch-sh/syscalls/__open.S
syscall_src += arch-sh/syscalls/__openat.S
syscall_src += arch-sh/syscalls/close.S
@@ -73,6 +73,7 @@
syscall_src += arch-sh/syscalls/dup2.S
syscall_src += arch-sh/syscalls/select.S
syscall_src += arch-sh/syscalls/ftruncate.S
+syscall_src += arch-sh/syscalls/ftruncate64.S
syscall_src += arch-sh/syscalls/getdents.S
syscall_src += arch-sh/syscalls/fsync.S
syscall_src += arch-sh/syscalls/fdatasync.S
diff --git a/libc/arch-sh/syscalls/__pwrite64.S b/libc/arch-sh/syscalls/ftruncate64.S
similarity index 63%
copy from libc/arch-sh/syscalls/__pwrite64.S
copy to libc/arch-sh/syscalls/ftruncate64.S
index a722242..f4c7c1e 100644
--- a/libc/arch-sh/syscalls/__pwrite64.S
+++ b/libc/arch-sh/syscalls/ftruncate64.S
@@ -2,22 +2,19 @@
#include <sys/linux-syscalls.h>
.text
- .type __pwrite64, @function
- .globl __pwrite64
+ .type ftruncate64, @function
+ .globl ftruncate64
.align 4
-__pwrite64:
-
- /* get ready for additonal arg */
- mov.l @r15, r0
+ftruncate64:
/* invoke trap */
mov.l 0f, r3 /* trap num */
- trapa #(5 + 0x10)
+ trapa #(3 + 0x10)
/* check return value */
cmp/pz r0
- bt __NR_pwrite64_end
+ bt __NR_ftruncate64_end
/* keep error number */
sts.l pr, @-r15
@@ -26,10 +23,10 @@
mov r0, r4
lds.l @r15+, pr
-__NR_pwrite64_end:
+__NR_ftruncate64_end:
rts
nop
.align 2
-0: .long __NR_pwrite64
+0: .long __NR_ftruncate64
1: .long __set_syscall_errno
diff --git a/libc/arch-sh/syscalls/__pread64.S b/libc/arch-sh/syscalls/pread64.S
similarity index 89%
rename from libc/arch-sh/syscalls/__pread64.S
rename to libc/arch-sh/syscalls/pread64.S
index 474add3..702a402 100644
--- a/libc/arch-sh/syscalls/__pread64.S
+++ b/libc/arch-sh/syscalls/pread64.S
@@ -2,11 +2,11 @@
#include <sys/linux-syscalls.h>
.text
- .type __pread64, @function
- .globl __pread64
+ .type pread64, @function
+ .globl pread64
.align 4
-__pread64:
+pread64:
/* get ready for additonal arg */
mov.l @r15, r0
diff --git a/libc/arch-sh/syscalls/__pwrite64.S b/libc/arch-sh/syscalls/pwrite64.S
similarity index 89%
rename from libc/arch-sh/syscalls/__pwrite64.S
rename to libc/arch-sh/syscalls/pwrite64.S
index a722242..3f6c192 100644
--- a/libc/arch-sh/syscalls/__pwrite64.S
+++ b/libc/arch-sh/syscalls/pwrite64.S
@@ -2,11 +2,11 @@
#include <sys/linux-syscalls.h>
.text
- .type __pwrite64, @function
- .globl __pwrite64
+ .type pwrite64, @function
+ .globl pwrite64
.align 4
-__pwrite64:
+pwrite64:
/* get ready for additonal arg */
mov.l @r15, r0
diff --git a/libc/arch-x86/syscalls.mk b/libc/arch-x86/syscalls.mk
index c210b21..e8c6a77 100644
--- a/libc/arch-x86/syscalls.mk
+++ b/libc/arch-x86/syscalls.mk
@@ -44,8 +44,8 @@
syscall_src += arch-x86/syscalls/acct.S
syscall_src += arch-x86/syscalls/read.S
syscall_src += arch-x86/syscalls/write.S
-syscall_src += arch-x86/syscalls/__pread64.S
-syscall_src += arch-x86/syscalls/__pwrite64.S
+syscall_src += arch-x86/syscalls/pread64.S
+syscall_src += arch-x86/syscalls/pwrite64.S
syscall_src += arch-x86/syscalls/__open.S
syscall_src += arch-x86/syscalls/__openat.S
syscall_src += arch-x86/syscalls/close.S
@@ -73,6 +73,7 @@
syscall_src += arch-x86/syscalls/dup2.S
syscall_src += arch-x86/syscalls/select.S
syscall_src += arch-x86/syscalls/ftruncate.S
+syscall_src += arch-x86/syscalls/ftruncate64.S
syscall_src += arch-x86/syscalls/getdents.S
syscall_src += arch-x86/syscalls/fsync.S
syscall_src += arch-x86/syscalls/fdatasync.S
diff --git a/libc/arch-x86/syscalls/ftruncate64.S b/libc/arch-x86/syscalls/ftruncate64.S
new file mode 100644
index 0000000..66835ab
--- /dev/null
+++ b/libc/arch-x86/syscalls/ftruncate64.S
@@ -0,0 +1,29 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+ .text
+ .type ftruncate64, @function
+ .globl ftruncate64
+ .align 4
+
+ftruncate64:
+ pushl %ebx
+ pushl %ecx
+ pushl %edx
+ mov 16(%esp), %ebx
+ mov 20(%esp), %ecx
+ mov 24(%esp), %edx
+ movl $__NR_ftruncate64, %eax
+ int $0x80
+ cmpl $-129, %eax
+ jb 1f
+ negl %eax
+ pushl %eax
+ call __set_errno
+ addl $4, %esp
+ orl $-1, %eax
+1:
+ popl %edx
+ popl %ecx
+ popl %ebx
+ ret
diff --git a/libc/arch-x86/syscalls/__pread64.S b/libc/arch-x86/syscalls/pread64.S
similarity index 90%
rename from libc/arch-x86/syscalls/__pread64.S
rename to libc/arch-x86/syscalls/pread64.S
index 3114673..eb004a9 100644
--- a/libc/arch-x86/syscalls/__pread64.S
+++ b/libc/arch-x86/syscalls/pread64.S
@@ -2,11 +2,11 @@
#include <sys/linux-syscalls.h>
.text
- .type __pread64, @function
- .globl __pread64
+ .type pread64, @function
+ .globl pread64
.align 4
-__pread64:
+pread64:
pushl %ebx
pushl %ecx
pushl %edx
diff --git a/libc/arch-x86/syscalls/__pwrite64.S b/libc/arch-x86/syscalls/pwrite64.S
similarity index 90%
rename from libc/arch-x86/syscalls/__pwrite64.S
rename to libc/arch-x86/syscalls/pwrite64.S
index 28f6536..01389f8 100644
--- a/libc/arch-x86/syscalls/__pwrite64.S
+++ b/libc/arch-x86/syscalls/pwrite64.S
@@ -2,11 +2,11 @@
#include <sys/linux-syscalls.h>
.text
- .type __pwrite64, @function
- .globl __pwrite64
+ .type pwrite64, @function
+ .globl pwrite64
.align 4
-__pwrite64:
+pwrite64:
pushl %ebx
pushl %ecx
pushl %edx
diff --git a/libc/docs/CHANGES.TXT b/libc/docs/CHANGES.TXT
index 8e23c0e..3fbbee0 100644
--- a/libc/docs/CHANGES.TXT
+++ b/libc/docs/CHANGES.TXT
@@ -14,6 +14,8 @@
- <sched.h>: Add sched_getcpu(), sched_getaffinity(), sched_setaffinity(),
cpu_set_t and related macros (e.g. CPU_SETSIZE, CPU_ZERO, CPU_SET, ...)
+- <unistd.h>: Add ftruncate64().
+
-------------------------------------------------------------------------------
Differences between Android 2.3 and Android 2.2:
diff --git a/libc/include/sys/linux-syscalls.h b/libc/include/sys/linux-syscalls.h
index 35729ae..cb4d5e5 100644
--- a/libc/include/sys/linux-syscalls.h
+++ b/libc/include/sys/linux-syscalls.h
@@ -71,6 +71,7 @@
#define __NR_dup2 (__NR_SYSCALL_BASE + 63)
#define __NR__newselect (__NR_SYSCALL_BASE + 142)
#define __NR_ftruncate (__NR_SYSCALL_BASE + 93)
+#define __NR_ftruncate64 (__NR_SYSCALL_BASE + 194)
#define __NR_fsync (__NR_SYSCALL_BASE + 118)
#define __NR_fdatasync (__NR_SYSCALL_BASE + 148)
#define __NR_fchown32 (__NR_SYSCALL_BASE + 207)
diff --git a/libc/include/sys/linux-unistd.h b/libc/include/sys/linux-unistd.h
index 4a61724..f706d00c 100644
--- a/libc/include/sys/linux-unistd.h
+++ b/libc/include/sys/linux-unistd.h
@@ -52,8 +52,8 @@
int acct (const char* filepath);
ssize_t read (int, void*, size_t);
ssize_t write (int, const void*, size_t);
-ssize_t __pread64 (int, void *, size_t, off_t, off_t);
-ssize_t __pwrite64 (int, void *, size_t, off_t, off_t);
+ssize_t pread64 (int, void *, size_t, off64_t);
+ssize_t pwrite64 (int, void *, size_t, off64_t);
int __open (const char*, int, mode_t);
int __openat (int, const char*, int, mode_t);
int close (int);
@@ -83,6 +83,7 @@
int dup2 (int, int);
int select (int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *);
int ftruncate (int, off_t);
+int ftruncate64 (int, off64_t);
int getdents (unsigned int, struct dirent *, unsigned int);
int fsync (int);
int fdatasync (int);
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index aa236bd..4534fb9 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -145,6 +145,7 @@
extern int fsync(int);
extern int fdatasync(int);
extern int ftruncate(int, off_t);
+extern int ftruncate64(int, off64_t);
extern int pause(void);
extern unsigned int alarm(unsigned int);
diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index 41c9500..0535e56 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -245,6 +245,59 @@
"""
+def param_uses_64bits(param):
+ """Returns True iff a syscall parameter description corresponds
+ to a 64-bit type."""
+ param = param.strip()
+ # First, check that the param type begins with one of the known
+ # 64-bit types.
+ if not ( \
+ param.startswith("int64_t") or param.startswith("uint64_t") or \
+ param.startswith("loff_t") or param.startswith("off64_t") or \
+ param.startswith("long long") or param.startswith("unsigned long long") or
+ param.startswith("signed long long") ):
+ return False
+
+ # Second, check that there is no pointer type here
+ if param.find("*") >= 0:
+ return False
+
+ # Ok
+ return True
+
+def count_arm_param_registers(params):
+ """This function is used to count the number of register used
+ to pass parameters when invoking a thumb or ARM system call.
+ This is because the ARM EABI mandates that 64-bit quantities
+ must be passed in an even+odd register pair. So, for example,
+ something like:
+
+ foo(int fd, off64_t pos)
+
+ would actually need 4 registers:
+ r0 -> int
+ r1 -> unused
+ r2-r3 -> pos
+ """
+ count = 0
+ for param in params:
+ if param_uses_64bits(param):
+ if (count & 1) != 0:
+ count += 1
+ count += 2
+ else:
+ count += 1
+ return count
+
+def count_generic_param_registers(params):
+ count = 0
+ for param in params:
+ if param_uses_64bits(param):
+ count += 2
+ else:
+ count += 1
+ return count
+
class State:
def __init__(self):
self.old_stubs = []
@@ -370,25 +423,28 @@
syscall_name = t["name"]
if t["id"] >= 0:
+ num_regs = count_arm_param_registers(syscall_params)
if gen_thumb_stubs:
- t["asm-thumb"] = self.thumb_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+ t["asm-thumb"] = self.thumb_genstub(syscall_func,num_regs,"__NR_"+syscall_name)
else:
if gen_eabi_stubs:
- t["asm-arm"] = self.arm_eabi_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+ t["asm-arm"] = self.arm_eabi_genstub(syscall_func,num_regs,"__NR_"+syscall_name)
else:
- t["asm-arm"] = self.arm_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+ t["asm-arm"] = self.arm_genstub(syscall_func,num_regs,"__NR_"+syscall_name)
if t["id2"] >= 0:
+ num_regs = count_generic_param_registers(syscall_params)
if t["cid"] >= 0:
- t["asm-x86"] = self.x86_genstub_cid(syscall_func, len(syscall_params), "__NR_"+syscall_name, t["cid"])
+ t["asm-x86"] = self.x86_genstub_cid(syscall_func, num_regs, "__NR_"+syscall_name, t["cid"])
else:
- t["asm-x86"] = self.x86_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+ t["asm-x86"] = self.x86_genstub(syscall_func, num_regs, "__NR_"+syscall_name)
elif t["cid"] >= 0:
E("cid for dispatch syscalls is only supported for x86 in "
"'%s'" % syscall_name)
return
if t["id3"] >= 0:
- t["asm-sh"] = self.superh_genstub(syscall_func,len(syscall_params),"__NR_"+syscall_name)
+ num_regs = count_generic_param_registers(syscall_params)
+ t["asm-sh"] = self.superh_genstub(syscall_func,num_regs,"__NR_"+syscall_name)
diff --git a/libc/unistd/pread.c b/libc/unistd/pread.c
index ec4691a..42fc3bc 100644
--- a/libc/unistd/pread.c
+++ b/libc/unistd/pread.c
@@ -28,10 +28,8 @@
#include <sys/types.h>
#include <unistd.h>
-extern int __pread64(int fd, void *buf, size_t nbytes, loff_t offset);
-
ssize_t pread(int fd, void *buf, size_t nbytes, off_t offset)
{
- return __pread64(fd, buf, nbytes, offset);
+ return pread64(fd, buf, nbytes, (off64_t)offset);
}
diff --git a/libc/unistd/pread64.c b/libc/unistd/pread64.c
deleted file mode 100644
index 2a4e08c..0000000
--- a/libc/unistd/pread64.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <sys/types.h>
-#include <unistd.h>
-
-extern int __pread64(int fd, void *buf, size_t nbytes, loff_t offset);
-
-ssize_t pread64(int fd, void *buf, size_t nbytes, off64_t offset)
-{
- return __pread64(fd, buf, nbytes, offset);
-}
-
diff --git a/libc/unistd/pwrite.c b/libc/unistd/pwrite.c
index 223e1b3..f106cb3 100644
--- a/libc/unistd/pwrite.c
+++ b/libc/unistd/pwrite.c
@@ -28,10 +28,8 @@
#include <sys/types.h>
#include <unistd.h>
-extern int __pwrite64(int fd, const void *buf, size_t nbytes, loff_t offset);
-
ssize_t pwrite(int fd, const void *buf, size_t nbytes, off_t offset)
{
- return __pwrite64(fd, buf, nbytes, offset);
+ return pwrite64(fd, buf, nbytes, (off64_t)offset);
}
diff --git a/libc/unistd/pwrite64.c b/libc/unistd/pwrite64.c
deleted file mode 100644
index b084650..0000000
--- a/libc/unistd/pwrite64.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <sys/types.h>
-#include <unistd.h>
-
-extern int __pwrite64(int fd, const void *buf, size_t nbytes, loff_t offset);
-
-ssize_t pwrite64(int fd, const void *buf, size_t nbytes, off64_t offset)
-{
- return __pwrite64(fd, buf, nbytes, offset);
-}
-
