glibc/sysdeps
Adhemerval Zanella 045c13d185 Consolidate Linux setrlimit and getrlimit implementation
This patch consolidates all Linux setrlimit and getrlimit on the default
sysdeps/unix/sysv/linux/{set,get}rlimit{64}.c.  It contains two exceptions:

  1. mips32 and mips64n32 which requires a versioned symbol for GLIBC 2.19
     and higher due a broken RLIM64_INFINITY constant.
  2. sparc32 does not define a compat symbol for getrlimit64 for old 2GB
     limit. I am not sure if it is required, but a RLIM_INFINITY fix [1]
     change its definition without adding a compat symbol.  This patch does
     not aim to address this possible issue, it follow current symbol
     export.

The default implementation uses prlimit64 for 64 bit rlim_t ({set,get}rlimit64)
and if it fails with ENOSYS it fall back to {get,set}rlimit syscall.  This
code path is only used on kernel older than 2.6.36 (basically now only x86)
and I avoid to user __ASSUME_PRLIMTI64 to simplify the implementation.  Once
x86 moves to be on par with other architectures regarding minimum kernel
supported we can get rid of using old syscalls and default path.

A new type size define is added, __RLIM_T_MATCHES_RLIM64_T, where is set as
default for 64 bits ports.  This allows the default implementation to avoid
{get,set}rlimit building and alias {get,set}rlimit64 to {get,set}rlimit.

Checked on x86_64, i386, armhf, aarch64, and powerpc64le.  I also did a
sanity build plus check-abi on all other supported architectures.

[1] Commit 9c96ff2385

	Adhemerval Zanella  <adhemerval.zanella@linaro.org>
	Yury Norov  <ynorov@caviumnetworks.com>

	* bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): define.
	* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/generic/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/typesizes.h [__s390x__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
	[__arch64__ || __sparcv9] (__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/typesizes.h [__86_64__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = resource]
	(sysdep_routines): Remove oldgetrlimit64.
	* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/arm/getrlimit64.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/setrlimit64.c: Likewise.
	* sysdeps/sysv/linux/generic/wordsize-32/syscalls.list: Remove
	setrlimit and getrlimit.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit.c: New file.
	* sysdeps/unix/sysv/linux/sparc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Handle
	__RLIM_T_MATCHES_RLIM64_T and add alias if defined.
	(__old_getrlimit64): Add compatibility symbol.
	* sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit): Likewise.
2016-11-17 15:54:22 -02:00
..
aarch64 Regenerate ULPs for aarch64 2016-11-10 16:52:35 +05:30
alpha Fix alpha sqrt fegetenv namespace (bug 20768). 2016-11-04 17:19:13 +00:00
arm nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
generic Refactor some libm type-generic macros. 2016-11-10 21:41:56 +00:00
gnu Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
hppa nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
i386 Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
ia64 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
ieee754 Refactor some libm type-generic macros. 2016-11-10 21:41:56 +00:00
init_array
m68k nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
mach New internal function __access_noerrno 2016-11-16 15:53:58 -02:00
microblaze nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
mips nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
nacl New internal function __access_noerrno 2016-11-16 15:53:58 -02:00
nios2 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
nptl
posix
powerpc Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
pthread
s390 s390x: Add hidden definition for __sigsetjmp 2016-11-15 15:51:01 +01:00
sh nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
sparc nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
tile Make sure tilepro uses kernel atomics fo atomic_store 2016-11-10 20:08:24 -05:00
unix Consolidate Linux setrlimit and getrlimit implementation 2016-11-17 15:54:22 -02:00
wordsize-32 Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
wordsize-64 Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
x86 nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
x86_64 Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00