From 40c0a780687b3387e02caadc8545b21347cffc7e Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 26 Oct 2016 16:55:39 -0200 Subject: Consolidate Linux semctl implementation This patch consolidates the semctl Linux implementation in only one default file, sysdeps/unix/sysv/linux/semctl.c. If tries to use the direct syscall if it is supported, otherwise will use the old ipc multiplex mechanism. The patch also simplify header inclusion and reorganize internal compat symbol to be built only if old ipc is defined. Checked on x86_64, i686, powerpc64le, aarch64, and armhf. * sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Remove oldsemctl. * sysdeps/unix/sysv/linux/alpha/semctl.c: Remove file. * sysdeps/unix/sysv/linux/arm/semctl.c: Likewise. * sysdeps/unix/sysv/linux/microblaze/semctl.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/semctl.c: Use defaulf implementation. * sysdeps/unix/sysv/linux/semctl.c (__new_semctl): Use semctl syscall if it is defined. * sysdeps/unix/sysv/linux/generic/syscalls.list (semctl): Remove. * sysdeps/unix/sysv/linux/alpha/syscalls.list (semctl): Likewise. * sysdeps/unix/sysv/linux/hppa/syscalls.list (semctl): Likewise. * sysdeps/unix/sysv/linux/ia64/syscalls.list (semctl): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (semctl): Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list (semctl): Likewise. --- sysdeps/unix/sysv/linux/alpha/Makefile | 2 +- sysdeps/unix/sysv/linux/alpha/semctl.c | 1 - sysdeps/unix/sysv/linux/alpha/syscalls.list | 1 - sysdeps/unix/sysv/linux/arm/semctl.c | 54 ---------------- sysdeps/unix/sysv/linux/generic/syscalls.list | 1 - sysdeps/unix/sysv/linux/hppa/syscalls.list | 1 - sysdeps/unix/sysv/linux/ia64/syscalls.list | 1 - sysdeps/unix/sysv/linux/microblaze/semctl.c | 1 - sysdeps/unix/sysv/linux/mips/mips64/semctl.c | 38 ++---------- sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list | 1 - sysdeps/unix/sysv/linux/semctl.c | 71 +++++++++------------- sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c | 54 ---------------- sysdeps/unix/sysv/linux/x86_64/syscalls.list | 1 - 13 files changed, 36 insertions(+), 191 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/alpha/semctl.c delete mode 100644 sysdeps/unix/sysv/linux/arm/semctl.c delete mode 100644 sysdeps/unix/sysv/linux/microblaze/semctl.c delete mode 100644 sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c (limited to 'sysdeps') diff --git a/sysdeps/unix/sysv/linux/alpha/Makefile b/sysdeps/unix/sysv/linux/alpha/Makefile index c24dc2e900..386b3fdd38 100644 --- a/sysdeps/unix/sysv/linux/alpha/Makefile +++ b/sysdeps/unix/sysv/linux/alpha/Makefile @@ -18,7 +18,7 @@ sysdep_routines += osf_select osf_gettimeofday osf_settimeofday \ osf_getrusage osf_wait4 # Support old ipc control -sysdep_routines += oldsemctl oldshmctl +sysdep_routines += oldshmctl CFLAGS-ioperm.c = -Wa,-mev6 endif diff --git a/sysdeps/unix/sysv/linux/alpha/semctl.c b/sysdeps/unix/sysv/linux/alpha/semctl.c deleted file mode 100644 index 4cb834ad97..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/semctl.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list index 54c1752522..c12620a382 100644 --- a/sysdeps/unix/sysv/linux/alpha/syscalls.list +++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list @@ -7,7 +7,6 @@ shmget - shmget i:iii __shmget shmget semop - semop i:ipi __semop semop semtimedop - semtimedop i:ipip semtimedop semget - semget i:iii __semget semget -oldsemctl EXTRA semctl i:iiii __old_semctl semctl@GLIBC_2.0 sigstack - sigstack 2 sigstack diff --git a/sysdeps/unix/sysv/linux/arm/semctl.c b/sysdeps/unix/sysv/linux/arm/semctl.c deleted file mode 100644 index 79d9d3e0db..0000000000 --- a/sysdeps/unix/sysv/linux/arm/semctl.c +++ /dev/null @@ -1,54 +0,0 @@ -/* Copyright (C) 1995-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , August 1995. - - 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 - . */ - -#include -#include -#include -#include -#include -#include - - -/* Define a `union semun' suitable for Linux here. */ -union semun -{ - int val; /* value for SETVAL */ - struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ - unsigned short int *array; /* array for GETALL & SETALL */ - struct seminfo *__buf; /* buffer for IPC_INFO */ -}; - -int -__new_semctl (int semid, int semnum, int cmd, ...) -{ - union semun arg; - va_list ap; - - va_start (ap, cmd); - - /* Get the argument. */ - arg = va_arg (ap, union semun); - - va_end (ap); - - return INLINE_SYSCALL (semctl, 4, semid, semnum, cmd | __IPC_64, - arg.array); -} - -#include -versioned_symbol (libc, __new_semctl, semctl, GLIBC_2_2); diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list index ad75223884..f95f1f7a49 100644 --- a/sysdeps/unix/sysv/linux/generic/syscalls.list +++ b/sysdeps/unix/sysv/linux/generic/syscalls.list @@ -2,7 +2,6 @@ # SysV APIs semget - semget i:iii __semget semget -semctl - semctl i:iiii __semctl semctl semtimedop - semtimedop i:ipip semtimedop semop - semop i:ipi __semop semop shmget - shmget i:iii __shmget shmget diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list index da2c9abbbf..5040ef34ec 100644 --- a/sysdeps/unix/sysv/linux/hppa/syscalls.list +++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list @@ -8,7 +8,6 @@ shmget - shmget i:iii __shmget shmget semop - semop i:ipi __semop semop semtimedop - semtimedop i:ipip semtimedop semget - semget i:iii __semget semget -semctl - semctl i:iiii __semctl semctl # proper socket implementations: accept - accept Ci:iBN __libc_accept __accept accept diff --git a/sysdeps/unix/sysv/linux/ia64/syscalls.list b/sysdeps/unix/sysv/linux/ia64/syscalls.list index 8056781e41..ca5cba46f8 100644 --- a/sysdeps/unix/sysv/linux/ia64/syscalls.list +++ b/sysdeps/unix/sysv/linux/ia64/syscalls.list @@ -12,7 +12,6 @@ shmget - shmget i:iii __shmget shmget semop - semop i:ipi __semop semop semtimedop - semtimedop i:ipip semtimedop semget - semget i:iii __semget semget -semctl - semctl i:iiii __semctl semctl # proper socket implementations: accept - accept Ci:iBN __libc_accept __accept accept diff --git a/sysdeps/unix/sysv/linux/microblaze/semctl.c b/sysdeps/unix/sysv/linux/microblaze/semctl.c deleted file mode 100644 index 4cb834ad97..0000000000 --- a/sysdeps/unix/sysv/linux/microblaze/semctl.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/mips/mips64/semctl.c b/sysdeps/unix/sysv/linux/mips/mips64/semctl.c index 1115a25a51..5a0c2a3dd3 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/semctl.c +++ b/sysdeps/unix/sysv/linux/mips/mips64/semctl.c @@ -15,39 +15,11 @@ License along with the GNU C Library. If not, see . */ -#include -#include -#include -#include -#include - -/* Define a `union semun' suitable for Linux here. */ -union semun -{ - int val; /* value for SETVAL */ - struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ - unsigned short int *array; /* array for GETALL & SETALL */ - struct seminfo *__buf; /* buffer for IPC_INFO */ -}; - -int __semctl (int semid, int semnum, int cmd, ...); - -int -__semctl (int semid, int semnum, int cmd, ...) -{ - union semun arg; - va_list ap; - - va_start (ap, cmd); - - /* Get the argument. */ - arg = va_arg (ap, union semun); +#include - va_end (ap); +#undef SHLIB_COMPAT +#define SHLIB_COMPAT(a, b, c) 0 - return INLINE_SYSCALL (semctl, 4, semid, semnum, cmd | __IPC_64, - arg.array); -} +#define DEFAULT_VERSION GLIBC_2_0 -#include -versioned_symbol (libc, __semctl, semctl, GLIBC_2_0); +#include diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list index f23b3798b4..09ab580504 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list +++ b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list @@ -7,4 +7,3 @@ shmdt - shmdt i:s __shmdt shmdt shmget - shmget i:iii __shmget shmget semop - semop i:ipi __semop semop semget - semget i:iii __semget semget -semctl - semctl i:iiii __semctl semctl diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c index ee84a1e316..dde224105b 100644 --- a/sysdeps/unix/sysv/linux/semctl.c +++ b/sysdeps/unix/sysv/linux/semctl.c @@ -16,29 +16,12 @@ License along with the GNU C Library; if not, see . */ -#include -#include #include +#include #include - #include -#include -#include #include - -#include - -struct __old_semid_ds -{ - struct __old_ipc_perm sem_perm; /* operation permission struct */ - __time_t sem_otime; /* last semop() time */ - __time_t sem_ctime; /* last time changed by semctl() */ - struct sem *__sembase; /* ptr to first semaphore in array */ - struct sem_queue *__sem_pending; /* pending operations */ - struct sem_queue *__sem_pending_last; /* last pending operation */ - struct sem_undo *__undo; /* ondo requests on this array */ - unsigned short int sem_nsems; /* number of semaphores in set */ -}; +#include /* Define a `union semun' suitable for Linux here. */ union semun @@ -47,26 +30,19 @@ union semun struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ unsigned short int *array; /* array for GETALL & SETALL */ struct seminfo *__buf; /* buffer for IPC_INFO */ - struct __old_semid_ds *__old_buf; }; -/* Return identifier for array of NSEMS semaphores associated with - KEY. */ -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) -int __old_semctl (int semid, int semnum, int cmd, ...); +#ifndef DEFAULT_VERSION +# define DEFAULT_VERSION GLIBC_2_2 #endif -int __new_semctl (int semid, int semnum, int cmd, ...); -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) int -attribute_compat_text_section -__old_semctl (int semid, int semnum, int cmd, ...) +__new_semctl (int semid, int semnum, int cmd, ...) { - union semun arg; + union semun arg = { 0 }; va_list ap; /* Get the argument only if required. */ - arg.buf = NULL; switch (cmd) { case SETVAL: /* arg.val */ @@ -83,20 +59,29 @@ __old_semctl (int semid, int semnum, int cmd, ...) break; } - return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, - &arg); -} -compat_symbol (libc, __old_semctl, semctl, GLIBC_2_0); +#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS + return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd | __IPC_64, + arg.array); +#else + return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd | __IPC_64, + SEMCTL_ARG_ADDRESS (arg)); #endif +} +versioned_symbol (libc, __new_semctl, semctl, DEFAULT_VERSION); + +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) +/* Since semctl use a variadic argument for semid_ds there is not need to + define and tie the compatibility symbol to the old 'union semun' + definition. */ int -__new_semctl (int semid, int semnum, int cmd, ...) +attribute_compat_text_section +__old_semctl (int semid, int semnum, int cmd, ...) { - union semun arg; + union semun arg = { 0 }; va_list ap; /* Get the argument only if required. */ - arg.buf = NULL; switch (cmd) { case SETVAL: /* arg.val */ @@ -113,8 +98,12 @@ __new_semctl (int semid, int semnum, int cmd, ...) break; } - return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd | __IPC_64, - &arg); +# ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS + return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd, arg.array); +# else + return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd, + SEMCTL_ARG_ADDRESS (arg)); +# endif } - -versioned_symbol (libc, __new_semctl, semctl, GLIBC_2_2); +compat_symbol (libc, __old_semctl, semctl, GLIBC_2_0); +#endif diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c b/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c deleted file mode 100644 index a9ae4c6076..0000000000 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c +++ /dev/null @@ -1,54 +0,0 @@ -/* Copyright (C) 1995-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , August 1995. - - 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 - . */ - -#include -#include -#include -#include - -#include -#include - -/* Define a `union semun' suitable for Linux here. */ -union semun -{ - int val; /* value for SETVAL */ - struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */ - unsigned short int *array; /* array for GETALL & SETALL */ - struct seminfo *__buf; /* buffer for IPC_INFO */ -}; - -/* Return identifier for array of NSEMS semaphores associated with - KEY. */ - -int -semctl (int semid, int semnum, int cmd, ...) -{ - union semun arg; - va_list ap; - - va_start (ap, cmd); - - /* Get the argument. */ - arg = va_arg (ap, union semun); - - va_end (ap); - - return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, - arg.array); -} diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list index 75b25a1b33..f3a15416a4 100644 --- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list +++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list @@ -13,7 +13,6 @@ shmget - shmget i:iii __shmget shmget semop - semop i:ipi __semop semop semtimedop - semtimedop i:ipip semtimedop semget - semget i:iii __semget semget -semctl - semctl i:iiii __semctl semctl syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime -- cgit 1.4.1