[glibc/fw/syscall-cleanups] Linux: Clean up pread64/pwrite64 system call names

[glibc/fw/syscall-cleanups] Linux: Clean up pread64/pwrite64 system call names

[Florian Weimer]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=401c63072f7c81105a349fbf4023deb06aab1b15

commit 401c63072f7c81105a349fbf4023deb06aab1b15
Author: Florian Weimer <fweimer@redhat.com>
Date:   Sun Feb 9 16:07:00 2020 +0100

    Linux: Clean up pread64/pwrite64 system call names
    
    Linux removed the last definitions of __NR_pread and __NR_pwrite
    in commit 4ba66a9760722ccbb691b8f7116cad2f791cca7b, the removal
    of the blackfin port.  All architectures now define __NR_pread64 and
    __NR_pwrite64 only.

Diff:
---
 sysdeps/unix/sysv/linux/generic/sysdep.h      |  8 --------
 sysdeps/unix/sysv/linux/pread.c               |  6 +-----
 sysdeps/unix/sysv/linux/pread64.c             |  4 ----
 sysdeps/unix/sysv/linux/pread64_nocancel.c    |  4 ----
 sysdeps/unix/sysv/linux/pwrite.c              |  6 +-----
 sysdeps/unix/sysv/linux/pwrite64.c            |  4 ----
 sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h | 11 -----------
 7 files changed, 2 insertions(+), 41 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/generic/sysdep.h b/sysdeps/unix/sysv/linux/generic/sysdep.h
index 23defce..40b4b95 100644
--- a/sysdeps/unix/sysv/linux/generic/sysdep.h
+++ b/sysdeps/unix/sysv/linux/generic/sysdep.h
@@ -25,11 +25,3 @@
 #ifdef __NR_llseek
 # define __NR__llseek __NR_llseek
 #endif
-
-#if __WORDSIZE == 64
-/* By defining the older names, glibc will build syscall wrappers for
-   both pread and pread64; sysdeps/unix/sysv/linux/wordsize-64/pread64.c
-   will suppress generating any separate code for pread64.c.  */
-#define __NR_pread __NR_pread64
-#define __NR_pwrite __NR_pwrite64
-#endif
diff --git a/sysdeps/unix/sysv/linux/pread.c b/sysdeps/unix/sysv/linux/pread.c
index 7a09aff..8dd87b3 100644
--- a/sysdeps/unix/sysv/linux/pread.c
+++ b/sysdeps/unix/sysv/linux/pread.c
@@ -21,14 +21,10 @@
 
 #ifndef __OFF_T_MATCHES_OFF64_T
 
-# ifndef __NR_pread
-#  define __NR_pread __NR_pread64
-# endif
-
 ssize_t
 __libc_pread (int fd, void *buf, size_t count, off_t offset)
 {
-  return SYSCALL_CANCEL (pread, fd, buf, count, SYSCALL_LL_PRW (offset));
+  return SYSCALL_CANCEL (pread64, fd, buf, count, SYSCALL_LL_PRW (offset));
 }
 
 strong_alias (__libc_pread, __pread)
diff --git a/sysdeps/unix/sysv/linux/pread64.c b/sysdeps/unix/sysv/linux/pread64.c
index a7f9071..3d4ffba 100644
--- a/sysdeps/unix/sysv/linux/pread64.c
+++ b/sysdeps/unix/sysv/linux/pread64.c
@@ -19,10 +19,6 @@
 #include <unistd.h>
 #include <sysdep-cancel.h>
 
-#ifndef __NR_pread64
-# define __NR_pread64 __NR_pread
-#endif
-
 ssize_t
 __libc_pread64 (int fd, void *buf, size_t count, off64_t offset)
 {
diff --git a/sysdeps/unix/sysv/linux/pread64_nocancel.c b/sysdeps/unix/sysv/linux/pread64_nocancel.c
index 2eb6873..af33985 100644
--- a/sysdeps/unix/sysv/linux/pread64_nocancel.c
+++ b/sysdeps/unix/sysv/linux/pread64_nocancel.c
@@ -20,10 +20,6 @@
 #include <sysdep-cancel.h>
 #include <not-cancel.h>
 
-#ifndef __NR_pread64
-# define __NR_pread64 __NR_pread
-#endif
-
 ssize_t
 __pread64_nocancel (int fd, void *buf, size_t count, off64_t offset)
 {
diff --git a/sysdeps/unix/sysv/linux/pwrite.c b/sysdeps/unix/sysv/linux/pwrite.c
index 5ef208e..1796468 100644
--- a/sysdeps/unix/sysv/linux/pwrite.c
+++ b/sysdeps/unix/sysv/linux/pwrite.c
@@ -21,14 +21,10 @@
 
 #ifndef __OFF_T_MATCHES_OFF64_T
 
-# ifndef __NR_pwrite
-#  define __NR_pwrite __NR_pwrite64
-# endif
-
 ssize_t
 __libc_pwrite (int fd, const void *buf, size_t count, off_t offset)
 {
-  return SYSCALL_CANCEL (pwrite, fd, buf, count, SYSCALL_LL_PRW (offset));
+  return SYSCALL_CANCEL (pwrite64, fd, buf, count, SYSCALL_LL_PRW (offset));
 }
 
 strong_alias (__libc_pwrite, __pwrite)
diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c
index 632f001..709775c 100644
--- a/sysdeps/unix/sysv/linux/pwrite64.c
+++ b/sysdeps/unix/sysv/linux/pwrite64.c
@@ -19,10 +19,6 @@
 #include <unistd.h>
 #include <sysdep-cancel.h>
 
-#ifndef __NR_pwrite64
-# define __NR_pwrite64 __NR_pwrite
-#endif
-
 ssize_t
 __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset)
 {
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
index 9ff4479..cec1326 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
@@ -39,17 +39,6 @@
 /* In newer 2.1 kernels __NR_syscall is missing so we define it here.  */
 #define __NR_syscall 0
 
-/*
- * Newer kernel versions redefined __NR_pread and __NR_pwrite to
- * __NR_pread64 and __NR_pwrite64.
- */
-#ifndef __NR_pread
-# define __NR_pread __NR_pread64
-#endif
-#ifndef __NR_pwrite
-# define __NR_pwrite __NR_pwrite64
-#endif
-
 #undef SYS_ify
 #define SYS_ify(syscall_name)	__NR_##syscall_name