diff mbox series

[2/6] linux: Add prlimit64 C implementation

Message ID 20211122185437.1934590-3-adhemerval.zanella@linaro.org
State Committed
Headers show
Series linux: Some syscall refactors | expand

Checks

Context Check Description
dj/TryBot-apply_patch success Patch applied to master at the time it was sent

Commit Message

Adhemerval Zanella Nov. 22, 2021, 6:54 p.m. UTC
The LFS prlimit64 requires a arch-specific implementation in
syscalls.list.  Instead add a generic one that handles the
required symbol alias for __RLIM_T_MATCHES_RLIM64_T.

HPPA is the only outlier which requires a different default
symbol.

Checked on x86_64-linux-gnu and with build for the affected ABIs.
---
 sysdeps/unix/sysv/linux/Makefile              |  2 +-
 sysdeps/unix/sysv/linux/arm/syscalls.list     |  2 -
 .../linux/generic/wordsize-32/syscalls.list   |  4 --
 sysdeps/unix/sysv/linux/hppa/prlimit64.c      |  2 +
 sysdeps/unix/sysv/linux/hppa/syscalls.list    |  1 -
 sysdeps/unix/sysv/linux/i386/syscalls.list    |  2 -
 sysdeps/unix/sysv/linux/m68k/syscalls.list    |  1 -
 .../unix/sysv/linux/microblaze/syscalls.list  |  1 -
 .../unix/sysv/linux/mips/mips32/syscalls.list |  3 --
 .../sysv/linux/mips/mips64/n32/syscalls.list  |  2 -
 .../sysv/linux/mips/mips64/n64/syscalls.list  |  2 -
 .../linux/powerpc/powerpc32/syscalls.list     |  2 -
 sysdeps/unix/sysv/linux/prlimit.c             |  2 +
 sysdeps/unix/sysv/linux/prlimit64.c           | 39 +++++++++++++++++++
 .../sysv/linux/s390/s390-32/syscalls.list     |  1 -
 sysdeps/unix/sysv/linux/sh/syscalls.list      |  2 -
 .../sysv/linux/sparc/sparc32/syscalls.list    |  2 -
 .../unix/sysv/linux/wordsize-64/syscalls.list |  1 -
 18 files changed, 44 insertions(+), 27 deletions(-)
 delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
 create mode 100644 sysdeps/unix/sysv/linux/hppa/prlimit64.c
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
 create mode 100644 sysdeps/unix/sysv/linux/prlimit64.c

Comments

Stafford Horne Nov. 25, 2021, 11:39 p.m. UTC | #1
On Mon, Nov 22, 2021 at 03:54:33PM -0300, Adhemerval Zanella wrote:
> The LFS prlimit64 requires a arch-specific implementation in
> syscalls.list.  Instead add a generic one that handles the
> required symbol alias for __RLIM_T_MATCHES_RLIM64_T.
> 
> HPPA is the only outlier which requires a different default
> symbol.
> 
> Checked on x86_64-linux-gnu and with build for the affected ABIs.
> ---
>  sysdeps/unix/sysv/linux/Makefile              |  2 +-
>  sysdeps/unix/sysv/linux/arm/syscalls.list     |  2 -
>  .../linux/generic/wordsize-32/syscalls.list   |  4 --
>  sysdeps/unix/sysv/linux/hppa/prlimit64.c      |  2 +
>  sysdeps/unix/sysv/linux/hppa/syscalls.list    |  1 -
>  sysdeps/unix/sysv/linux/i386/syscalls.list    |  2 -
>  sysdeps/unix/sysv/linux/m68k/syscalls.list    |  1 -
>  .../unix/sysv/linux/microblaze/syscalls.list  |  1 -
>  .../unix/sysv/linux/mips/mips32/syscalls.list |  3 --
>  .../sysv/linux/mips/mips64/n32/syscalls.list  |  2 -
>  .../sysv/linux/mips/mips64/n64/syscalls.list  |  2 -
>  .../linux/powerpc/powerpc32/syscalls.list     |  2 -
>  sysdeps/unix/sysv/linux/prlimit.c             |  2 +
>  sysdeps/unix/sysv/linux/prlimit64.c           | 39 +++++++++++++++++++
>  .../sysv/linux/s390/s390-32/syscalls.list     |  1 -
>  sysdeps/unix/sysv/linux/sh/syscalls.list      |  2 -
>  .../sysv/linux/sparc/sparc32/syscalls.list    |  2 -
>  .../unix/sysv/linux/wordsize-64/syscalls.list |  1 -
>  18 files changed, 44 insertions(+), 27 deletions(-)
>  delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
>  create mode 100644 sysdeps/unix/sysv/linux/hppa/prlimit64.c
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
>  create mode 100644 sysdeps/unix/sysv/linux/prlimit64.c
> diff --git a/sysdeps/unix/sysv/linux/prlimit.c b/sysdeps/unix/sysv/linux/prlimit.c
> index c12de52693..f9d9911a04 100644
> --- a/sysdeps/unix/sysv/linux/prlimit.c
> +++ b/sysdeps/unix/sysv/linux/prlimit.c
> @@ -18,6 +18,7 @@
>  #include <sys/resource.h>
>  #include <sysdep.h>

Possibly a comment here saying something like.

/* For ports that support the 64-bit ABI we do not need to define prlimit
   and instead prlimit aliases to prlimit64.  See the prlimit64
   implementation.  */

> +#if !__RLIM_T_MATCHES_RLIM64_T
>  int
>  prlimit (__pid_t pid, enum __rlimit_resource resource,
>  	 const struct rlimit *new_rlimit, struct rlimit *old_rlimit)
> @@ -73,3 +74,4 @@ prlimit (__pid_t pid, enum __rlimit_resource resource,
>  
>    return res;
>  }
> +#endif /* __RLIM_T_MATCHES_RLIM64_T  */
> diff --git a/sysdeps/unix/sysv/linux/prlimit64.c b/sysdeps/unix/sysv/linux/prlimit64.c
> new file mode 100644
> index 0000000000..e3a8718b98
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/prlimit64.c
> @@ -0,0 +1,39 @@
> +/* Get/set resource limits.  Linux specific syscall.
> +   Copyright (C) 2020 Free Software Foundation, Inc.

2021.

> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#define prlimit __redirect_prlimit
> +#include <sys/resource.h>
> +#undef prlimit
> +#include <sysdep.h>
> +
> +int
> +__prlimit64 (pid_t pid, enum __rlimit_resource resource,
> +	     const struct rlimit64 *new_rlimit, struct rlimit64 *old_rlimit)
> +{
> +  return INLINE_SYSCALL_CALL (prlimit64, pid, resource, new_rlimit,
> +			      old_rlimit);
> +}
> +#ifdef VERSION_prlimit64
> +# include <shlib-compat.h>
> +versioned_symbol (libc, __prlimit64, prlimit64, VERSION_prlimit64);
> +#else
> +strong_alias (__prlimit64, prlimit64)
> +# if __RLIM_T_MATCHES_RLIM64_T
> +strong_alias (prlimit64, prlimit)
> +# endif
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
> index 8e9b7c4b71..91d78d91ef 100644
> --- a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
> @@ -15,5 +15,4 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>  setfsuid	-	setfsuid32	Ei:i	setfsuid
>  
> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
>  personality	EXTRA	personality	Ei:i	__personality	personality
> diff --git a/sysdeps/unix/sysv/linux/sh/syscalls.list b/sysdeps/unix/sysv/linux/sh/syscalls.list
> index 6ff3e8eb8a..78b2348c05 100644
> --- a/sysdeps/unix/sysv/linux/sh/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/sh/syscalls.list
> @@ -15,6 +15,4 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>  setfsuid	-	setfsuid32	Ei:i	setfsuid
>  
> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
> -
>  personality	EXTRA	personality	Ei:i	__personality	personality
> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
> index 4fcae65451..9e4eb0a165 100644
> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
> @@ -14,5 +14,3 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>  
>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>  setfsuid	-	setfsuid32	Ei:i	setfsuid
> -
> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> index 8d97a32344..3232f11f51 100644
> --- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> @@ -1,5 +1,4 @@
>  # File name	Caller	Syscall name	# args	Strong name	Weak names
>  
>  sendfile	-	sendfile	i:iipi	sendfile	sendfile64
> -prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
>  personality	EXTRA	personality	i:i	__personality	personality
> -- 
> 2.32.0

Other than the year issue (as I understand the patch is from your old branch..).

It looks fine to me.

-Stafford
Adhemerval Zanella Nov. 30, 2021, 11:51 a.m. UTC | #2
On 25/11/2021 20:39, Stafford Horne wrote:
> On Mon, Nov 22, 2021 at 03:54:33PM -0300, Adhemerval Zanella wrote:
>> The LFS prlimit64 requires a arch-specific implementation in
>> syscalls.list.  Instead add a generic one that handles the
>> required symbol alias for __RLIM_T_MATCHES_RLIM64_T.
>>
>> HPPA is the only outlier which requires a different default
>> symbol.
>>
>> Checked on x86_64-linux-gnu and with build for the affected ABIs.
>> ---
>>  sysdeps/unix/sysv/linux/Makefile              |  2 +-
>>  sysdeps/unix/sysv/linux/arm/syscalls.list     |  2 -
>>  .../linux/generic/wordsize-32/syscalls.list   |  4 --
>>  sysdeps/unix/sysv/linux/hppa/prlimit64.c      |  2 +
>>  sysdeps/unix/sysv/linux/hppa/syscalls.list    |  1 -
>>  sysdeps/unix/sysv/linux/i386/syscalls.list    |  2 -
>>  sysdeps/unix/sysv/linux/m68k/syscalls.list    |  1 -
>>  .../unix/sysv/linux/microblaze/syscalls.list  |  1 -
>>  .../unix/sysv/linux/mips/mips32/syscalls.list |  3 --
>>  .../sysv/linux/mips/mips64/n32/syscalls.list  |  2 -
>>  .../sysv/linux/mips/mips64/n64/syscalls.list  |  2 -
>>  .../linux/powerpc/powerpc32/syscalls.list     |  2 -
>>  sysdeps/unix/sysv/linux/prlimit.c             |  2 +
>>  sysdeps/unix/sysv/linux/prlimit64.c           | 39 +++++++++++++++++++
>>  .../sysv/linux/s390/s390-32/syscalls.list     |  1 -
>>  sysdeps/unix/sysv/linux/sh/syscalls.list      |  2 -
>>  .../sysv/linux/sparc/sparc32/syscalls.list    |  2 -
>>  .../unix/sysv/linux/wordsize-64/syscalls.list |  1 -
>>  18 files changed, 44 insertions(+), 27 deletions(-)
>>  delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
>>  create mode 100644 sysdeps/unix/sysv/linux/hppa/prlimit64.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
>>  create mode 100644 sysdeps/unix/sysv/linux/prlimit64.c
>> diff --git a/sysdeps/unix/sysv/linux/prlimit.c b/sysdeps/unix/sysv/linux/prlimit.c
>> index c12de52693..f9d9911a04 100644
>> --- a/sysdeps/unix/sysv/linux/prlimit.c
>> +++ b/sysdeps/unix/sysv/linux/prlimit.c
>> @@ -18,6 +18,7 @@
>>  #include <sys/resource.h>
>>  #include <sysdep.h>
> 
> Possibly a comment here saying something like.
> 
> /* For ports that support the 64-bit ABI we do not need to define prlimit
>    and instead prlimit aliases to prlimit64.  See the prlimit64
>    implementation.  */

It is kinda implicit for other LFS aliais, but the extra comment is helpful.
Ack.

> 
>> +#if !__RLIM_T_MATCHES_RLIM64_T
>>  int
>>  prlimit (__pid_t pid, enum __rlimit_resource resource,
>>  	 const struct rlimit *new_rlimit, struct rlimit *old_rlimit)
>> @@ -73,3 +74,4 @@ prlimit (__pid_t pid, enum __rlimit_resource resource,
>>  
>>    return res;
>>  }
>> +#endif /* __RLIM_T_MATCHES_RLIM64_T  */
>> diff --git a/sysdeps/unix/sysv/linux/prlimit64.c b/sysdeps/unix/sysv/linux/prlimit64.c
>> new file mode 100644
>> index 0000000000..e3a8718b98
>> --- /dev/null
>> +++ b/sysdeps/unix/sysv/linux/prlimit64.c
>> @@ -0,0 +1,39 @@
>> +/* Get/set resource limits.  Linux specific syscall.
>> +   Copyright (C) 2020 Free Software Foundation, Inc.
> 
> 2021.

Ack.

> 
>> +   This file is part of the GNU C Library.
>> +
>> +   The GNU C Library is free software; you can redistribute it and/or
>> +   modify it under the terms of the GNU Lesser General Public
>> +   License as published by the Free Software Foundation; either
>> +   version 2.1 of the License, or (at your option) any later version.
>> +
>> +   The GNU C Library is distributed in the hope that it will be useful,
>> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
>> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>> +   Lesser General Public License for more details.
>> +
>> +   You should have received a copy of the GNU Lesser General Public
>> +   License along with the GNU C Library; if not, see
>> +   <https://www.gnu.org/licenses/>.  */
>> +
>> +#define prlimit __redirect_prlimit
>> +#include <sys/resource.h>
>> +#undef prlimit
>> +#include <sysdep.h>
>> +
>> +int
>> +__prlimit64 (pid_t pid, enum __rlimit_resource resource,
>> +	     const struct rlimit64 *new_rlimit, struct rlimit64 *old_rlimit)
>> +{
>> +  return INLINE_SYSCALL_CALL (prlimit64, pid, resource, new_rlimit,
>> +			      old_rlimit);
>> +}
>> +#ifdef VERSION_prlimit64
>> +# include <shlib-compat.h>
>> +versioned_symbol (libc, __prlimit64, prlimit64, VERSION_prlimit64);
>> +#else
>> +strong_alias (__prlimit64, prlimit64)
>> +# if __RLIM_T_MATCHES_RLIM64_T
>> +strong_alias (prlimit64, prlimit)
>> +# endif
>> +#endif
>> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
>> index 8e9b7c4b71..91d78d91ef 100644
>> --- a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
>> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
>> @@ -15,5 +15,4 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>>  setfsuid	-	setfsuid32	Ei:i	setfsuid
>>  
>> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
>>  personality	EXTRA	personality	Ei:i	__personality	personality
>> diff --git a/sysdeps/unix/sysv/linux/sh/syscalls.list b/sysdeps/unix/sysv/linux/sh/syscalls.list
>> index 6ff3e8eb8a..78b2348c05 100644
>> --- a/sysdeps/unix/sysv/linux/sh/syscalls.list
>> +++ b/sysdeps/unix/sysv/linux/sh/syscalls.list
>> @@ -15,6 +15,4 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>>  setfsuid	-	setfsuid32	Ei:i	setfsuid
>>  
>> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
>> -
>>  personality	EXTRA	personality	Ei:i	__personality	personality
>> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
>> index 4fcae65451..9e4eb0a165 100644
>> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
>> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
>> @@ -14,5 +14,3 @@ getgroups	-	getgroups32	i:ip	__getgroups	getgroups
>>  
>>  setfsgid	-	setfsgid32	Ei:i	setfsgid
>>  setfsuid	-	setfsuid32	Ei:i	setfsuid
>> -
>> -prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
>> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
>> index 8d97a32344..3232f11f51 100644
>> --- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
>> +++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
>> @@ -1,5 +1,4 @@
>>  # File name	Caller	Syscall name	# args	Strong name	Weak names
>>  
>>  sendfile	-	sendfile	i:iipi	sendfile	sendfile64
>> -prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
>>  personality	EXTRA	personality	i:i	__personality	personality
>> -- 
>> 2.32.0
> 
> Other than the year issue (as I understand the patch is from your old branch..).
> 
> It looks fine to me.
> 
> -Stafford

Ack.
diff mbox series

Patch

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index c5b4f249cc..aa10754b98 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -56,7 +56,7 @@  endif
 ifeq ($(subdir),misc)
 sysdep_routines += adjtimex clone umount umount2 readahead sysctl \
 		   setfsuid setfsgid epoll_pwait signalfd \
-		   eventfd eventfd_read eventfd_write prlimit \
+		   eventfd eventfd_read eventfd_write prlimit prlimit64 \
 		   personality epoll_wait tee vmsplice splice \
 		   open_by_handle_at mlock2 pkey_mprotect pkey_set pkey_get \
 		   timerfd_gettime timerfd_settime prctl \
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index fa26876f90..55fb065893 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -15,8 +15,6 @@  getgroups	-	getgroups32	i:ip	__getgroups	getgroups
 setfsgid	-	setfsgid32	Ei:i	setfsgid
 setfsuid	-	setfsuid32	Ei:i	setfsuid
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
-
 personality	EXTRA	personality	Ei:i	__personality	personality
 
 # proper socket implementations:
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list b/sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
deleted file mode 100644
index 736edbe654..0000000000
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
+++ /dev/null
@@ -1,4 +0,0 @@ 
-# File name	Caller	Syscall name	# args	Strong name	Weak names
-
-# rlimit APIs
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/hppa/prlimit64.c b/sysdeps/unix/sysv/linux/hppa/prlimit64.c
new file mode 100644
index 0000000000..4554c81dd9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/prlimit64.c
@@ -0,0 +1,2 @@ 
+#define VERSION_prlimit64 GLIBC_2_17
+#include <sysdeps/unix/sysv/linux/prlimit64.c>
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index cc5305a585..12e4adeccc 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -9,5 +9,4 @@  shutdown	-	shutdown	i:ii	__shutdown	shutdown
 socket		-	socket		i:iii	__socket	socket
 socketpair	-	socketpair	i:iiif	__socketpair	socketpair
 
-prlimit64	EXTRA	prlimit64	i:iipp	__prlimit64	prlimit64@@GLIBC_2.17
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/i386/syscalls.list b/sysdeps/unix/sysv/linux/i386/syscalls.list
index d3eaabe61b..c0ec1af8f3 100644
--- a/sysdeps/unix/sysv/linux/i386/syscalls.list
+++ b/sysdeps/unix/sysv/linux/i386/syscalls.list
@@ -19,6 +19,4 @@  modify_ldt	EXTRA	modify_ldt	i:ipi	__modify_ldt	modify_ldt
 vm86old		EXTRA	vm86old		i:p	__vm86old	vm86@GLIBC_2.0
 vm86		-	vm86		i:ip	__vm86		vm86@@GLIBC_2.3.4
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
-
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/m68k/syscalls.list b/sysdeps/unix/sysv/linux/m68k/syscalls.list
index 44c84bf626..0fc117886c 100644
--- a/sysdeps/unix/sysv/linux/m68k/syscalls.list
+++ b/sysdeps/unix/sysv/linux/m68k/syscalls.list
@@ -16,5 +16,4 @@  setfsgid	-	setfsgid32	Ei:i	setfsgid
 setfsuid	-	setfsuid32	Ei:i	setfsuid
 
 cacheflush	EXTRA	cacheflush	i:iiii	__cacheflush	cacheflush
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/microblaze/syscalls.list b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
index 0abdc38bf3..878ce7e6a2 100644
--- a/sysdeps/unix/sysv/linux/microblaze/syscalls.list
+++ b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
@@ -2,5 +2,4 @@ 
 
 cacheflush	EXTRA	cacheflush	i:iiii	__cacheflush	cacheflush
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
deleted file mode 100644
index dbeb184d73..0000000000
--- a/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
+++ /dev/null
@@ -1,3 +0,0 @@ 
-# File name	Caller	Syscall name	# args	Strong name	Weak names
-
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
index 848028f125..c737eeadc5 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
@@ -4,6 +4,4 @@ 
 # return value.
 lseek64		-	lseek		i:iii	__lseek64	__libc_lseek64 lseek64@@GLIBC_2.2 llseek@GLIBC_2.0:GLIBC_2.28
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
-
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
index 84f348c8e5..0924f245d4 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
@@ -1,5 +1,3 @@ 
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
-prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
-
 sendfile	-	sendfile	i:iipi	sendfile	sendfile64
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list b/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
index d31303250d..5231da94b2 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
@@ -2,5 +2,3 @@ 
 
 chown		-	chown		i:sii	__chown		chown@@GLIBC_2.1
 lchown		-	lchown		i:sii	__lchown	lchown@@GLIBC_2.0 chown@GLIBC_2.0
-
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/prlimit.c b/sysdeps/unix/sysv/linux/prlimit.c
index c12de52693..f9d9911a04 100644
--- a/sysdeps/unix/sysv/linux/prlimit.c
+++ b/sysdeps/unix/sysv/linux/prlimit.c
@@ -18,6 +18,7 @@ 
 #include <sys/resource.h>
 #include <sysdep.h>
 
+#if !__RLIM_T_MATCHES_RLIM64_T
 int
 prlimit (__pid_t pid, enum __rlimit_resource resource,
 	 const struct rlimit *new_rlimit, struct rlimit *old_rlimit)
@@ -73,3 +74,4 @@  prlimit (__pid_t pid, enum __rlimit_resource resource,
 
   return res;
 }
+#endif /* __RLIM_T_MATCHES_RLIM64_T  */
diff --git a/sysdeps/unix/sysv/linux/prlimit64.c b/sysdeps/unix/sysv/linux/prlimit64.c
new file mode 100644
index 0000000000..e3a8718b98
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/prlimit64.c
@@ -0,0 +1,39 @@ 
+/* Get/set resource limits.  Linux specific syscall.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define prlimit __redirect_prlimit
+#include <sys/resource.h>
+#undef prlimit
+#include <sysdep.h>
+
+int
+__prlimit64 (pid_t pid, enum __rlimit_resource resource,
+	     const struct rlimit64 *new_rlimit, struct rlimit64 *old_rlimit)
+{
+  return INLINE_SYSCALL_CALL (prlimit64, pid, resource, new_rlimit,
+			      old_rlimit);
+}
+#ifdef VERSION_prlimit64
+# include <shlib-compat.h>
+versioned_symbol (libc, __prlimit64, prlimit64, VERSION_prlimit64);
+#else
+strong_alias (__prlimit64, prlimit64)
+# if __RLIM_T_MATCHES_RLIM64_T
+strong_alias (prlimit64, prlimit)
+# endif
+#endif
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
index 8e9b7c4b71..91d78d91ef 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
@@ -15,5 +15,4 @@  getgroups	-	getgroups32	i:ip	__getgroups	getgroups
 setfsgid	-	setfsgid32	Ei:i	setfsgid
 setfsuid	-	setfsuid32	Ei:i	setfsuid
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/sh/syscalls.list b/sysdeps/unix/sysv/linux/sh/syscalls.list
index 6ff3e8eb8a..78b2348c05 100644
--- a/sysdeps/unix/sysv/linux/sh/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sh/syscalls.list
@@ -15,6 +15,4 @@  getgroups	-	getgroups32	i:ip	__getgroups	getgroups
 setfsgid	-	setfsgid32	Ei:i	setfsgid
 setfsuid	-	setfsuid32	Ei:i	setfsuid
 
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
-
 personality	EXTRA	personality	Ei:i	__personality	personality
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
index 4fcae65451..9e4eb0a165 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
@@ -14,5 +14,3 @@  getgroups	-	getgroups32	i:ip	__getgroups	getgroups
 
 setfsgid	-	setfsgid32	Ei:i	setfsgid
 setfsuid	-	setfsuid32	Ei:i	setfsuid
-
-prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
index 8d97a32344..3232f11f51 100644
--- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
@@ -1,5 +1,4 @@ 
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
 sendfile	-	sendfile	i:iipi	sendfile	sendfile64
-prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
 personality	EXTRA	personality	i:i	__personality	personality