diff options
Diffstat (limited to 'libc/sysdeps/linux/common')
26 files changed, 1179 insertions, 198 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in index ec889ca0d..45c70baf6 100644 --- a/libc/sysdeps/linux/common/Makefile.in +++ b/libc/sysdeps/linux/common/Makefile.in @@ -34,6 +34,17 @@ CSRC := $(filter-out capget.c capset.c inotify.c ioperm.c iopl.c madvise.c \ sync_file_range.c sysctl.c sysinfo.c timerfd.c uselib.c vhangup.c,$(CSRC)) endif +ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y) +CSRC := $(filter-out fork.c getpid.c raise.c open.c close.c read.c write.c, $(CSRC)) +ifeq ($(TARGET_ARCH),arm) +CSRC := $(filter-out vfork.c, $(CSRC)) +else ifeq ($(TARGET_ARCH),x86_64) +#do nothing +else +CSRC := $(filter-out waitpid.c, $(CSRC)) +endif +endif + ifneq ($(UCLIBC_BSD_SPECIFIC),y) # we need these internally: getdomainname.c CSRC := $(filter-out mincore.c setdomainname.c,$(CSRC)) @@ -75,6 +86,18 @@ ifneq ($(UCLIBC_SV4_DEPRECATED),y) CSRC := $(filter-out ustat.c,$(CSRC)) endif +ifeq ($(TARGET_ARCH),sh) +CSRC := $(filter-out longjmp.c vfork.c,$(CSRC)) +endif + +ifeq ($(TARGET_ARCH),sparc) +CSRC := $(filter-out vfork.c,$(CSRC)) +endif + +ifeq ($(TARGET_ARCH),i386) +CSRC := $(filter-out vfork.c,$(CSRC)) +endif + # fails for some reason ifneq ($(strip $(ARCH_OBJS)),) CSRC := $(filter-out $(notdir $(ARCH_OBJS:.o=.c)) $(ARCH_OBJ_FILTEROUT),$(CSRC)) diff --git a/libc/sysdeps/linux/common/__rt_sigtimedwait.c b/libc/sysdeps/linux/common/__rt_sigtimedwait.c index f9ec0eabf..554c6b9cb 100644 --- a/libc/sysdeps/linux/common/__rt_sigtimedwait.c +++ b/libc/sysdeps/linux/common/__rt_sigtimedwait.c @@ -2,44 +2,97 @@ /* * __rt_sigtimedwait() for uClibc * - * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * Copyright (C) 2006 by Steven Hill <sjhill@realitydiluted.com> + * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org> * - * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + * GNU Library General Public License (LGPL) version 2 or later. */ #include <sys/syscall.h> #include <signal.h> -#define __need_NULL -#include <stddef.h> +#include <string.h> +libc_hidden_proto(memcpy) #ifdef __NR_rt_sigtimedwait -#define __NR___rt_sigtimedwait __NR_rt_sigtimedwait -static _syscall4(int, __rt_sigtimedwait, const sigset_t *, set, siginfo_t *, info, - const struct timespec *, timeout, size_t, setsize) +#include <string.h> +libc_hidden_proto(memcpy) -int sigwaitinfo(const sigset_t * set, siginfo_t * info) +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# include <sysdep-cancel.h> + +static int do_sigtimedwait(const sigset_t *set, siginfo_t *info, + const struct timespec *timeout) { - return __rt_sigtimedwait(set, info, NULL, _NSIG / 8); +# ifdef SIGCANCEL + sigset_t tmpset; + + if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + /* Create a temporary mask without the bit for SIGCANCEL set. */ + // We are not copying more than we have to. + memcpy (&tmpset, set, _NSIG / 8); + __sigdelset (&tmpset, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&tmpset, SIGSETXID); +# endif + set = &tmpset; + } +# endif + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ + int result = INLINE_SYSCALL (rt_sigtimedwait, 4, set, info, + timeout, _NSIG / 8); + + /* The kernel generates a SI_TKILL code in si_code in case tkill is + used. tkill is transparently used in raise(). Since having + SI_TKILL as a code is useful in general we fold the results + here. */ + if (result != -1 && info != NULL && info->si_code == SI_TKILL) + info->si_code = SI_USER; + + return result; } -int sigtimedwait(const sigset_t * set, siginfo_t * info, - const struct timespec *timeout) +/* Return any pending signal or wait for one for the given time. */ +int __sigtimedwait(const sigset_t *set, siginfo_t *info, + const struct timespec *timeout) { - return __rt_sigtimedwait(set, info, timeout, _NSIG / 8); + if(SINGLE_THREAD_P) + return do_sigtimedwait(set, info, timeout); + + int oldtype = LIBC_CANCEL_ASYNC(); + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ + int result = do_sigtimedwait(set, info, timeout); + + LIBC_CANCEL_RESET(oldtype); + + return result; } -#else -int sigwaitinfo(const sigset_t * set, siginfo_t * info) +# else +# define __need_NULL +# include <stddef.h> +# define __NR___rt_sigtimedwait __NR_rt_sigtimedwait +static _syscall4(int, __rt_sigtimedwait, const sigset_t *, set, + siginfo_t *, info, const struct timespec *, timeout, + size_t, setsize); + +int attribute_hidden __sigtimedwait(const sigset_t * set, siginfo_t * info, + const struct timespec *timeout) { - if (set == NULL) - __set_errno(EINVAL); - else - __set_errno(ENOSYS); - return -1; + return __rt_sigtimedwait(set, info, timeout, _NSIG / 8); } - -int sigtimedwait(const sigset_t * set, siginfo_t * info, - const struct timespec *timeout) +# endif /* !__UCLIBC_HAS_THREADS_NATIVE__ */ +#else +int attribute_hidden __sigtimedwait(const sigset_t * set, siginfo_t * info, + const struct timespec *timeout) { if (set == NULL) __set_errno(EINVAL); @@ -48,5 +101,4 @@ int sigtimedwait(const sigset_t * set, siginfo_t * info, return -1; } #endif -libc_hidden_def(sigwaitinfo) -libc_hidden_def(sigtimedwait) +weak_alias(__sigtimedwait,sigtimedwait) diff --git a/libc/sysdeps/linux/common/__rt_sigwaitinfo.c b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c new file mode 100644 index 000000000..c8953bfbc --- /dev/null +++ b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c @@ -0,0 +1,102 @@ +/* vi: set sw=4 ts=4: */ +/* + * __rt_sigwaitinfo() for uClibc + * + * Copyright (C) 2006 by Steven Hill <sjhill@realitydiluted.com> + * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org> + * + * GNU Library General Public License (LGPL) version 2 or later. + */ + +#include <sys/syscall.h> +#include <signal.h> +#include <string.h> + +libc_hidden_proto(memcpy) + +#ifdef __NR_rt_sigtimedwait + +#include <string.h> + +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# include <sysdep-cancel.h> + +static int do_sigwaitinfo(const sigset_t *set, siginfo_t *info) +{ +# ifdef SIGCANCEL + sigset_t tmpset; + + if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + /* Create a temporary mask without the bit for SIGCANCEL set. */ + // We are not copying more than we have to. + memcpy (&tmpset, set, _NSIG / 8); + __sigdelset (&tmpset, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&tmpset, SIGSETXID); +# endif + set = &tmpset; + } +# endif + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ + int result = INLINE_SYSCALL (rt_sigtimedwait, 4, set, info, + NULL, _NSIG / 8); + + /* The kernel generates a SI_TKILL code in si_code in case tkill is + used. tkill is transparently used in raise(). Since having + SI_TKILL as a code is useful in general we fold the results + here. */ + if (result != -1 && info != NULL && info->si_code == SI_TKILL) + info->si_code = SI_USER; + + return result; +} + +/* Return any pending signal or wait for one for the given time. */ +int __sigwaitinfo(const sigset_t *set, siginfo_t *info) +{ + if(SINGLE_THREAD_P) + return do_sigwaitinfo(set, info); + + int oldtype = LIBC_CANCEL_ASYNC(); + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ + int result = do_sigwaitinfo(set, info); + + LIBC_CANCEL_RESET(oldtype); + + return result; +} +# else +# define __need_NULL +# include <stddef.h> +# define __NR___rt_sigwaitinfo __NR_rt_sigtimedwait +static _syscall4(int, __rt_sigwaitinfo, const sigset_t *, set, + siginfo_t *, info, const struct timespec *, timeout, + size_t, setsize); + +int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info) +{ + return __rt_sigwaitinfo(set, info, NULL, _NSIG / 8); +} +# endif +#else +int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info) +{ + if (set == NULL) + __set_errno(EINVAL); + else + __set_errno(ENOSYS); + return -1; +} +#endif +libc_hidden_proto(sigwaitinfo) +weak_alias (__sigwaitinfo, sigwaitinfo) +libc_hidden_weak(sigwaitinfo) diff --git a/libc/sysdeps/linux/common/__syscall_fcntl.c b/libc/sysdeps/linux/common/__syscall_fcntl.c index 355b22b00..4e3bc23df 100644 --- a/libc/sysdeps/linux/common/__syscall_fcntl.c +++ b/libc/sysdeps/linux/common/__syscall_fcntl.c @@ -2,6 +2,7 @@ /* * __syscall_fcntl() for uClibc * + * Copyright (C) 2006 Steven J. Hill <sjhill@realitydiluted.com> * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. @@ -9,42 +10,83 @@ #include <sys/syscall.h> #include <stdarg.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> /* Must come before <fcntl.h>. */ +#endif #include <fcntl.h> #include <bits/wordsize.h> -#define __NR___syscall_fcntl __NR_fcntl -static __always_inline -_syscall3(int, __syscall_fcntl, int, fd, int, cmd, long, arg) +extern __typeof(fcntl) __libc_fcntl; +libc_hidden_proto(__libc_fcntl) -int fcntl(int fd, int cmd, ...) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +int __fcntl_nocancel (int fd, int cmd, ...) { - long arg; - va_list list; + va_list ap; + void *arg; - va_start(list, cmd); - arg = va_arg(list, long); - va_end(list); + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); -#if __WORDSIZE == 32 +# if __WORDSIZE == 32 if (cmd == F_GETLK64 || cmd == F_SETLK64 || cmd == F_SETLKW64) { -#if defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64 - return fcntl64(fd, cmd, arg); -#else +# if defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64 + return INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg); +# else __set_errno(ENOSYS); return -1; -#endif +# endif } +# endif + return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg); +} #endif - return (__syscall_fcntl(fd, cmd, arg)); -} -#ifndef __LINUXTHREADS_OLD__ -libc_hidden_def(fcntl) +int __libc_fcntl (int fd, int cmd, ...) +{ + va_list ap; + void *arg; + + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + if (SINGLE_THREAD_P || (cmd != F_SETLKW && cmd != F_SETLKW64)) +# if defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64 + return INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg); +# else + return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg); +# endif + + int oldtype = LIBC_CANCEL_ASYNC (); + +# if defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64 + int result = INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg); +# else + int result = INLINE_SYSCALL (fcntl, 3, fd, cmd, arg); +# endif + + LIBC_CANCEL_RESET (oldtype); + + return result; #else -libc_hidden_weak(fcntl) -strong_alias(fcntl,__libc_fcntl) +# if __WORDSIZE == 32 + if (cmd == F_GETLK64 || cmd == F_SETLK64 || cmd == F_SETLKW64) { +# if defined __UCLIBC_HAS_LFS__ && defined __NR_fcntl64 + return INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg); +# else + __set_errno(ENOSYS); + return -1; +# endif + } +# endif + return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg); #endif +} +libc_hidden_def(__libc_fcntl) -#if ! defined __NR_fcntl64 && defined __UCLIBC_HAS_LFS__ -strong_alias(fcntl,fcntl64) -#endif +libc_hidden_proto(fcntl) +weak_alias(__libc_fcntl,fcntl) +libc_hidden_weak(fcntl) diff --git a/libc/sysdeps/linux/common/__syscall_rt_sigaction.c b/libc/sysdeps/linux/common/__syscall_rt_sigaction.c index b4b007d02..006b38a2a 100644 --- a/libc/sysdeps/linux/common/__syscall_rt_sigaction.c +++ b/libc/sysdeps/linux/common/__syscall_rt_sigaction.c @@ -12,7 +12,9 @@ #ifdef __NR_rt_sigaction #include <signal.h> -int __syscall_rt_sigaction (int __signum, const struct sigaction *__act, struct sigaction *__oldact, size_t __size) attribute_hidden; +int __syscall_rt_sigaction (int __signum, const struct sigaction *__act, + struct sigaction *__oldact, size_t __size); + #define __NR___syscall_rt_sigaction __NR_rt_sigaction _syscall4(int, __syscall_rt_sigaction, int, signum, const struct sigaction *, act, struct sigaction *, oldact, diff --git a/libc/sysdeps/linux/common/_exit.c b/libc/sysdeps/linux/common/_exit.c index 6cece0878..51117d109 100644 --- a/libc/sysdeps/linux/common/_exit.c +++ b/libc/sysdeps/linux/common/_exit.c @@ -12,13 +12,23 @@ #include <unistd.h> #include <sys/types.h> #include <sys/syscall.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep.h> +#endif void attribute_noreturn _exit(int status) { /* The loop is added only to keep gcc happy. */ while(1) + { +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# ifdef __NR_exit_group + INLINE_SYSCALL(exit_group, 1, status); +# endif +#endif INLINE_SYSCALL(exit, 1, status); + } } libc_hidden_def(_exit) weak_alias(_exit,_Exit) diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h index 88297349a..923341b35 100644 --- a/libc/sysdeps/linux/common/bits/kernel-features.h +++ b/libc/sysdeps/linux/common/bits/kernel-features.h @@ -26,23 +26,126 @@ #endif #include <linux/version.h> -#define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE +#define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE + +/* We assume for __LINUX_KERNEL_VERSION the same encoding used in + linux/version.h. I.e., the major, minor, and subminor all get a + byte with the major number being in the highest byte. This means + we can do numeric comparisons. + + In the following we will define certain symbols depending on + whether the describes kernel feature is available in the kernel + version given by __LINUX_KERNEL_VERSION. We are not always exactly + recording the correct versions in which the features were + introduced. If somebody cares these values can afterwards be + corrected. Most of the numbers here are set corresponding to + 2.2.0. */ + +/* `getcwd' system call. */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_GETCWD_SYSCALL 1 +#endif /* Real-time signal became usable in 2.1.70. */ #if __LINUX_KERNEL_VERSION >= 131398 # define __ASSUME_REALTIME_SIGNALS 1 #endif -/* Beginning with 2.5.63 support for realtime and monotonic clocks and - timers based on them is available. */ -#if __LINUX_KERNEL_VERSION >= 132415 -# define __ASSUME_POSIX_TIMERS 1 +/* When were the `pread'/`pwrite' syscalls introduced? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_PREAD_SYSCALL 1 +# define __ASSUME_PWRITE_SYSCALL 1 #endif -/* On x86, the set_thread_area syscall was introduced in 2.5.29, but its - semantics was changed in 2.5.30, and again after 2.5.31. */ -#if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__ -# define __ASSUME_SET_THREAD_AREA_SYSCALL 1 +/* When was `poll' introduced? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_POLL_SYSCALL 1 +#endif + +/* The `lchown' syscall was introduced in 2.1.80. */ +#if __LINUX_KERNEL_VERSION >= 131408 +# define __ASSUME_LCHOWN_SYSCALL 1 +#endif + +/* When did the `setresuid' sysall became available? */ +#if __LINUX_KERNEL_VERSION >= 131584 && !defined __sparc__ +# define __ASSUME_SETRESUID_SYSCALL 1 +#endif + +/* The SIOCGIFNAME ioctl is available starting with 2.1.50. */ +#if __LINUX_KERNEL_VERSION >= 131408 +# define __ASSUME_SIOCGIFNAME 1 +#endif + +/* MSG_NOSIGNAL was at least available with Linux 2.2.0. */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_MSG_NOSIGNAL 1 +#endif + +/* On x86 another `getrlimit' syscall was added in 2.3.25. */ +#if __LINUX_KERNEL_VERSION >= 131865 && defined __i386__ +# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1 +#endif + +/* On x86 the truncate64/ftruncate64 syscalls were introduced in 2.3.31. */ +#if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__ +# define __ASSUME_TRUNCATE64_SYSCALL 1 +#endif + +/* On x86 the mmap2 syscall was introduced in 2.3.31. */ +#if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__ +# define __ASSUME_MMAP2_SYSCALL 1 +#endif + +/* On x86 the stat64/lstat64/fstat64 syscalls were introduced in 2.3.34. */ +#if __LINUX_KERNEL_VERSION >= 131874 && defined __i386__ +# define __ASSUME_STAT64_SYSCALL 1 +#endif + +/* On sparc and ARM the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64 + syscalls were introduced in 2.3.35. */ +#if __LINUX_KERNEL_VERSION >= 131875 && (defined __sparc__ || defined __arm__) +# define __ASSUME_TRUNCATE64_SYSCALL 1 +# define __ASSUME_MMAP2_SYSCALL 1 +# define __ASSUME_STAT64_SYSCALL 1 +#endif + +/* I know for sure that getrlimit are in 2.3.35 on powerpc. */ +#if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__ +# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1 +#endif + +/* I know for sure that these are in 2.3.35 on powerpc. But PowerPC64 does not + support separate 64-bit syscalls, already 64-bit */ +#if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__ \ + && !defined __powerpc64__ +# define __ASSUME_TRUNCATE64_SYSCALL 1 +# define __ASSUME_STAT64_SYSCALL 1 +#endif + +/* Linux 2.3.39 introduced 32bit UID/GIDs. Some platforms had 32 + bit type all along. */ +#if __LINUX_KERNEL_VERSION >= 131879 || defined __powerpc__ || defined __mips__ +# define __ASSUME_32BITUIDS 1 +#endif + +/* Linux 2.3.39 sparc added setresuid. */ +#if __LINUX_KERNEL_VERSION >= 131879 && defined __sparc__ +# define __ASSUME_SETRESUID_SYSCALL 1 +#endif + +#if __LINUX_KERNEL_VERSION >= 131879 +# define __ASSUME_SETRESGID_SYSCALL 1 +#endif + +/* Linux 2.3.39 introduced IPC64. Except for powerpc. */ +#if __LINUX_KERNEL_VERSION >= 131879 && !defined __powerpc__ +# define __ASSUME_IPC64 1 +#endif + +/* MIPS platforms had IPC64 all along. */ +#if defined __mips__ +# define __ASSUME_IPC64 1 #endif /* We can use the LDTs for threading with Linux 2.3.99 and newer. */ @@ -50,6 +153,74 @@ # define __ASSUME_LDT_WORKS 1 #endif +/* Linux 2.4.0 on PPC introduced a correct IPC64. But PowerPC64 does not + support a separate 64-bit sys call, already 64-bit */ +#if __LINUX_KERNEL_VERSION >= 132096 && defined __powerpc__ \ + && !defined __powerpc64__ +# define __ASSUME_IPC64 1 +#endif + +/* SH kernels got stat64, mmap2, and truncate64 during 2.4.0-test. */ +#if __LINUX_KERNEL_VERSION >= 132096 && defined __sh__ +# define __ASSUME_TRUNCATE64_SYSCALL 1 +# define __ASSUME_MMAP2_SYSCALL 1 +# define __ASSUME_STAT64_SYSCALL 1 +#endif + +/* The changed st_ino field appeared in 2.4.0-test6. But we cannot + distinguish this version from other 2.4.0 releases. Therefore play + save and assume it available is for 2.4.1 and up. However, SH is lame, + and still does not have a 64-bit inode field. */ +#if __LINUX_KERNEL_VERSION >= 132097 && !defined __alpha__ && !defined __sh__ +# define __ASSUME_ST_INO_64_BIT 1 +#endif + +/* To support locking of large files a new fcntl() syscall was introduced + in 2.4.0-test7. We test for 2.4.1 for the earliest version we know + the syscall is available. */ +#if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __sparc__) +# define __ASSUME_FCNTL64 1 +#endif + +/* The AT_CLKTCK auxiliary vector entry was introduction in the 2.4.0 + series. */ +#if __LINUX_KERNEL_VERSION >= 132097 +# define __ASSUME_AT_CLKTCK 1 +#endif + +/* Arm got fcntl64 in 2.4.4, PowerPC and SH have it also in 2.4.4 (I + don't know when it got introduced). But PowerPC64 does not support + separate FCNTL64 call, FCNTL is already 64-bit */ +#if __LINUX_KERNEL_VERSION >= 132100 \ + && (defined __arm__ || defined __powerpc__ || defined __sh__) \ + && !defined __powerpc64__ +# define __ASSUME_FCNTL64 1 +#endif + +/* The getdents64 syscall was introduced in 2.4.0-test7. We test for + 2.4.1 for the earliest version we know the syscall is available. */ +#if __LINUX_KERNEL_VERSION >= 132097 +# define __ASSUME_GETDENTS64_SYSCALL 1 +#endif + +/* When did O_DIRECTORY became available? Early in 2.3 but when? + Be safe, use 2.3.99. */ +#if __LINUX_KERNEL_VERSION >= 131939 +# define __ASSUME_O_DIRECTORY 1 +#endif + +/* Starting with one of the 2.4.0 pre-releases the Linux kernel passes + up the page size information. */ +#if __LINUX_KERNEL_VERSION >= 132097 +# define __ASSUME_AT_PAGESIZE 1 +#endif + +/* Starting with at least 2.4.0 the kernel passes the uid/gid unconditionally + up to the child. */ +#if __LINUX_KERNEL_VERSION >= 132097 +# define __ASSUME_AT_XID 1 +#endif + /* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way and the vfork syscall made it into the official kernel. */ #if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ @@ -57,17 +228,72 @@ # define __ASSUME_VFORK_SYSCALL 1 #endif +/* Starting with 2.4.5 kernels the mmap2 syscall made it into the official + kernel. But PowerPC64 does not support a separate MMAP2 call. */ +#if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ \ + && !defined __powerpc64__ +# define __ASSUME_MMAP2_SYSCALL 1 +#endif + +/* Starting with 2.4.21 PowerPC implements the new prctl syscall. + This allows applications to get/set the Floating Point Exception Mode. */ +#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ +# define __ASSUME_NEW_PRCTL_SYSCALL 1 +#endif + +/* Starting with 2.4.21 the PowerPC32 clone syscall works as expected. */ +#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ \ + && !defined __powerpc64__ +# define __ASSUME_FIXED_CLONE_SYSCALL 1 +#endif + +/* Starting with 2.4.21 PowerPC64 implements the new rt_sigreturn syscall. + The new rt_sigreturn takes an ucontext pointer allowing rt_sigreturn + to be used in the set/swapcontext implementation. */ +#if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc64__ +# define __ASSUME_NEW_RT_SIGRETURN_SYSCALL 1 +#endif + +/* On x86, the set_thread_area syscall was introduced in 2.5.29, but its + semantics was changed in 2.5.30, and again after 2.5.31. */ +#if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__ +# define __ASSUME_SET_THREAD_AREA_SYSCALL 1 +#endif + /* The vfork syscall on x86 and arm was definitely available in 2.4. */ #if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __arm__) # define __ASSUME_VFORK_SYSCALL 1 #endif -/* Starting with version 2.6.4-rc1 the getdents syscall returns d_type - * information as well and in between 2.6.5 and 2.6.8 most compat wrappers - * were fixed too. Except s390{,x} which was fixed in 2.6.11. */ -#if (__LINUX_KERNEL_VERSION >= 0x020608 && !defined __s390__) \ - || (__LINUX_KERNEL_VERSION >= 0x02060b && defined __s390__) -# define __ASSUME_GETDENTS32_D_TYPE 1 +/* There are an infinite number of PA-RISC kernel versions numbered + 2.4.0. But they've not really been released as such. We require + and expect the final version here. */ +#ifdef __hppa__ +# define __ASSUME_32BITUIDS 1 +# define __ASSUME_TRUNCATE64_SYSCALL 1 +# define __ASSUME_MMAP2_SYSCALL 1 +# define __ASSUME_STAT64_SYSCALL 1 +# define __ASSUME_IPC64 1 +# define __ASSUME_ST_INO_64_BIT 1 +# define __ASSUME_FCNTL64 1 +# define __ASSUME_GETDENTS64_SYSCALL 1 +#endif + +/* Alpha switched to a 64-bit timeval sometime before 2.2.0. */ +#if __LINUX_KERNEL_VERSION >= 131584 && defined __alpha__ +# define __ASSUME_TIMEVAL64 1 +#endif + +#if defined __mips__ && _MIPS_SIM == _ABIN32 +# define __ASSUME_FCNTL64 1 +#endif + +/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize + their availability with one define. The changes were made first + for i386 and the have to be done separately for the other archs. + For i386 we pick 2.5.50 as the first version with support. */ +#if __LINUX_KERNEL_VERSION >= 132402 && defined __i386__ +# define __ASSUME_CLONE_THREAD_FLAGS 1 #endif /* Support for various CLOEXEC and NONBLOCK flags was added for x86, @@ -87,6 +313,137 @@ # define __ASSUME_VFORK_SYSCALL 1 #endif +/* Beginning with 2.5.63 support for realtime and monotonic clocks and + timers based on them is available. */ +#if __LINUX_KERNEL_VERSION >= 132415 +# define __ASSUME_POSIX_TIMERS 1 +#endif + +/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize + their availability with one define. The changes were made first + for i386 and the have to be done separately for the other archs. + For ia64, s390*, PPC, x86-64 we pick 2.5.64 as the first version + with support. */ +#if __LINUX_KERNEL_VERSION >= 132416 \ + && (defined __ia64__ || defined __s390__ || defined __powerpc__ \ + || defined __x86_64__ || defined __sh__) +# define __ASSUME_CLONE_THREAD_FLAGS 1 +#endif + +/* With kernel 2.4.17 we always have netlink support. */ +#if __LINUX_KERNEL_VERSION >= (132096+17) +# define __ASSUME_NETLINK_SUPPORT 1 +#endif + +/* The requeue futex functionality was introduced in 2.5.70. */ +#if __LINUX_KERNEL_VERSION >= 132422 +# define __ASSUME_FUTEX_REQUEUE 1 +#endif + +/* The statfs64 syscalls are available in 2.5.74. */ +#if __LINUX_KERNEL_VERSION >= 132426 +# define __ASSUME_STATFS64 1 +#endif + +/* Starting with at least 2.5.74 the kernel passes the setuid-like exec + flag unconditionally up to the child. */ +#if __LINUX_KERNEL_VERSION >= 132426 +# define __ASSUME_AT_SECURE 1 +#endif + +/* Starting with the 2.5.75 kernel the kernel fills in the correct value + in the si_pid field passed as part of the siginfo_t struct to signal + handlers. */ +#if __LINUX_KERNEL_VERSION >= 132427 +# define __ASSUME_CORRECT_SI_PID 1 +#endif + +/* The tgkill syscall was instroduced for i386 in 2.5.75. For Alpha + it was introduced in 2.6.0-test1 which unfortunately cannot be + distinguished from 2.6.0. On x86-64, ppc, and ppc64 it was + introduced in 2.6.0-test3. */ +#if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __x86_64__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__) +# define __ASSUME_TGKILL 1 +#endif + +/* The utimes syscall has been available for some architectures + forever. For x86 it was introduced after 2.5.75, for x86-64, + ppc, and ppc64 it was introduced in 2.6.0-test3. */ +#if defined __alpha__ || defined __ia64__ || defined __hppa__ \ + || defined __sparc__ \ + || (__LINUX_KERNEL_VERSION > 132427 && defined __i386__) \ + || (__LINUX_KERNEL_VERSION > 132609 && defined __x86_64__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \ + || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__) +# define __ASSUME_UTIMES 1 +#endif + +// XXX Disabled for now since the semantics we want is not achieved. +#if 0 +/* The CLONE_STOPPED flag was introduced in the 2.6.0-test1 series. */ +#if __LINUX_KERNEL_VERSION >= 132609 +# define __ASSUME_CLONE_STOPPED 1 +#endif +#endif + +/* The fixed version of the posix_fadvise64 syscall appeared in + 2.6.0-test3. At least for x86. Powerpc support appeared in + 2.6.2, but for 32-bit userspace only. */ +#if (__LINUX_KERNEL_VERSION >= 132609 && defined __i386__) \ + || (__LINUX_KERNEL_VERSION >= 132610 && defined __powerpc__ \ + && !defined __powerpc64__) +# define __ASSUME_FADVISE64_64_SYSCALL 1 +#endif + +/* The PROT_GROWSDOWN/PROT_GROWSUP flags were introduced in the 2.6.0-test + series. */ +#if __LINUX_KERNEL_VERSION >= 132609 +# define __ASSUME_PROT_GROWSUPDOWN 1 +#endif + +/* Starting with 2.6.0 PowerPC adds signal/swapcontext support for Vector + SIMD (AKA Altivec, VMX) instructions and register state. This changes + the overall size of the sigcontext and adds the swapcontext syscall. */ +#if __LINUX_KERNEL_VERSION >= 132608 && defined __powerpc__ +# define __ASSUME_SWAPCONTEXT_SYSCALL 1 +#endif + +/* The CLONE_DETACHED flag is not necessary in 2.6.2 kernels, it is + implied. */ +#if __LINUX_KERNEL_VERSION >= 132610 +# define __ASSUME_NO_CLONE_DETACHED 1 +#endif + +/* Starting with version 2.6.4-rc1 the getdents syscall returns d_type + information as well and in between 2.6.5 and 2.6.8 most compat wrappers + were fixed too. Except s390{,x} which was fixed in 2.6.11. */ +#if (__LINUX_KERNEL_VERSION >= 0x020608 && !defined __s390__) \ + || (__LINUX_KERNEL_VERSION >= 0x02060b && defined __s390__) +# define __ASSUME_GETDENTS32_D_TYPE 1 +#endif + +/* Starting with version 2.5.3, the initial location returned by `brk' + after exec is always rounded up to the next page. */ +#if __LINUX_KERNEL_VERSION >= 132355 +# define __ASSUME_BRK_PAGE_ROUNDED 1 +#endif + +/* Starting with version 2.6.9, the waitid system call is available. + Except for powerpc and powerpc64, where it is available in 2.6.12. */ +#if (__LINUX_KERNEL_VERSION >= 0x020609 && !defined __powerpc__) \ + || (__LINUX_KERNEL_VERSION >= 0x02060c && defined __powerpc__) +# define __ASSUME_WAITID_SYSCALL 1 +#endif + +/* Starting with version 2.6.9, SSI_IEEE_RAISE_EXCEPTION exists. */ +#if __LINUX_KERNEL_VERSION >= 0x020609 && defined __alpha__ +#define __ASSUME_IEEE_RAISE_EXCEPTION 1 +#endif + /* This header was added somewhere around 2.6.13 */ #if __LINUX_KERNEL_VERSION >= 132621 # define HAVE_LINUX_CPUMASK_H 1 diff --git a/libc/sysdeps/linux/common/bits/kernel_sigaction.h b/libc/sysdeps/linux/common/bits/kernel_sigaction.h index f74e0a28a..0a35ac8cb 100644 --- a/libc/sysdeps/linux/common/bits/kernel_sigaction.h +++ b/libc/sysdeps/linux/common/bits/kernel_sigaction.h @@ -25,12 +25,12 @@ struct old_kernel_sigaction { */ extern int __syscall_sigaction(int, const struct old_kernel_sigaction *, - struct old_kernel_sigaction *) attribute_hidden; + struct old_kernel_sigaction *); #endif extern int __syscall_rt_sigaction(int, const struct sigaction *, - struct sigaction *, size_t) attribute_hidden; + struct sigaction *, size_t); #endif /* _BITS_SIGACTION_STRUCT_H */ diff --git a/libc/sysdeps/linux/common/bits/uClibc_mutex.h b/libc/sysdeps/linux/common/bits/uClibc_mutex.h index 14aeb9c80..c6094c3d2 100644 --- a/libc/sysdeps/linux/common/bits/uClibc_mutex.h +++ b/libc/sysdeps/linux/common/bits/uClibc_mutex.h @@ -62,7 +62,55 @@ #define __UCLIBC_MUTEX_UNLOCK(M) \ __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1) -#else +#ifdef __USE_STDIO_FUTEXES__ + +#include <bits/stdio-lock.h> + +#define __UCLIBC_IO_MUTEX(M) _IO_lock_t M +#define __UCLIBC_IO_MUTEX_LOCK(M) _IO_lock_lock(M) +#define __UCLIBC_IO_MUTEX_UNLOCK(M) _IO_lock_unlock(M) +#define __UCLIBC_IO_MUTEX_TRYLOCK(M) _IO_lock_trylock(M) +#define __UCLIBC_IO_MUTEX_INIT(M) _IO_lock_t M = _IO_lock_initializer +#define __UCLIBC_IO_MUTEX_EXTERN(M) extern _IO_lock_t M + +#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) \ + if (C) { \ + _IO_lock_lock(M); \ + } + +#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) \ + if (C) { \ + _IO_lock_unlock(M); \ + } + +#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) \ + __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,((A=(V))) == 0) + +#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) \ + __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,((A) == 0)) + +#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) _IO_lock_lock(M) +#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) _IO_lock_unlock(M) + +#else /* of __USE_STDIO_FUTEXES__ */ + +#define __UCLIBC_IO_MUTEX(M) __UCLIBC_MUTEX(M) +#define __UCLIBC_IO_MUTEX_LOCK(M) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1) +#define __UCLIBC_IO_MUTEX_UNLOCK(M) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1) +#define __UCLIBC_IO_MUTEX_TRYLOCK(M) __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_INIT(M) __UCLIBC_MUTEX_INIT(M, PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) +#define __UCLIBC_IO_MUTEX_EXTERN(M) __UCLIBC_MUTEX_EXTERN(M) +#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) __UCLIBC_MUTEX_AUTO_LOCK(M,A,V) +#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) __UCLIBC_MUTEX_AUTO_UNLOCK(M,A) +#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1) +#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1) + +#endif /* of __USE_STDIO_FUTEXES__ */ + + +#else /* of __UCLIBC_HAS_THREADS__ */ #define __UCLIBC_MUTEX(M) void *__UCLIBC_MUTEX_DUMMY_ ## M #define __UCLIBC_MUTEX_INIT(M,I) extern void *__UCLIBC_MUTEX_DUMMY_ ## M @@ -83,6 +131,22 @@ #define __UCLIBC_MUTEX_LOCK(M) ((void)0) #define __UCLIBC_MUTEX_UNLOCK(M) ((void)0) -#endif +#define __UCLIBC_IO_MUTEX(M) __UCLIBC_MUTEX(M) +#define __UCLIBC_IO_MUTEX_LOCK(M) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1) +#define __UCLIBC_IO_MUTEX_UNLOCK(M) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1) +#define __UCLIBC_IO_MUTEX_TRYLOCK(M) __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_INIT(M) __UCLIBC_MUTEX_INIT(M, PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) +#define __UCLIBC_IO_MUTEX_EXTERN(M) __UCLIBC_MUTEX_EXTERN(M) +#define __UCLIBC_IO_MUTEX_AUTO_LOCK(M,A,V) __UCLIBC_MUTEX_AUTO_LOCK(M,A,V) +#define __UCLIBC_IO_MUTEX_AUTO_UNLOCK(M,A) __UCLIBC_MUTEX_AUTO_UNLOCK(M,A) +#define __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(M) __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE(M) +#define __UCLIBC_IO_MUTEX_CONDITIONAL_LOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_LOCK(M, 1) +#define __UCLIBC_IO_MUTEX_CONDITIONAL_UNLOCK(M,C) __UCLIBC_MUTEX_CONDITIONAL_UNLOCK(M, 1) + +#endif /* of __UCLIBC_HAS_THREADS__ */ + +#define __UCLIBC_IO_MUTEX_TRYLOCK_CANCEL_UNSAFE(M) \ + __UCLIBC_IO_MUTEX_TRYLOCK(M) #endif /* _UCLIBC_MUTEX_H */ diff --git a/libc/sysdeps/linux/common/bits/uClibc_stdio.h b/libc/sysdeps/linux/common/bits/uClibc_stdio.h index 3631ef79f..a8cf4eb56 100644 --- a/libc/sysdeps/linux/common/bits/uClibc_stdio.h +++ b/libc/sysdeps/linux/common/bits/uClibc_stdio.h @@ -134,26 +134,26 @@ __UCLIBC_MUTEX_AUTO_LOCK_VAR(__infunc_user_locking) #define __STDIO_AUTO_THREADLOCK(__stream) \ - __UCLIBC_MUTEX_AUTO_LOCK((__stream)->__lock, __infunc_user_locking, \ + __UCLIBC_IO_MUTEX_AUTO_LOCK((__stream)->__lock, __infunc_user_locking, \ (__stream)->__user_locking) #define __STDIO_AUTO_THREADUNLOCK(__stream) \ - __UCLIBC_MUTEX_AUTO_UNLOCK((__stream)->__lock, __infunc_user_locking) + __UCLIBC_IO_MUTEX_AUTO_UNLOCK((__stream)->__lock, __infunc_user_locking) #define __STDIO_ALWAYS_THREADLOCK(__stream) \ - __UCLIBC_MUTEX_LOCK((__stream)->__lock) + __UCLIBC_IO_MUTEX_LOCK((__stream)->__lock) #define __STDIO_ALWAYS_THREADUNLOCK(__stream) \ - __UCLIBC_MUTEX_UNLOCK((__stream)->__lock) + __UCLIBC_IO_MUTEX_UNLOCK((__stream)->__lock) #define __STDIO_ALWAYS_THREADLOCK_CANCEL_UNSAFE(__stream) \ - __UCLIBC_MUTEX_LOCK_CANCEL_UNSAFE((__stream)->__lock) + __UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE((__stream)->__lock) #define __STDIO_ALWAYS_THREADTRYLOCK_CANCEL_UNSAFE(__stream) \ - __UCLIBC_MUTEX_TRYLOCK_CANCEL_UNSAFE((__stream)->__lock) + __UCLIBC_IO_MUTEX_TRYLOCK_CANCEL_UNSAFE((__stream)->__lock) #define __STDIO_ALWAYS_THREADUNLOCK_CANCEL_UNSAFE(__stream) \ - __UCLIBC_MUTEX_UNLOCK_CANCEL_UNSAFE((__stream)->__lock) + __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE((__stream)->__lock) #ifdef __UCLIBC_HAS_THREADS__ #define __STDIO_SET_USER_LOCKING(__stream) ((__stream)->__user_locking = 1) @@ -161,6 +161,14 @@ #define __STDIO_SET_USER_LOCKING(__stream) ((void)0) #endif +#ifdef __UCLIBC_HAS_THREADS__ +#ifdef __USE_STDIO_FUTEXES__ +#define STDIO_INIT_MUTEX(M) _IO_lock_init(M) +#else +#define STDIO_INIT_MUTEX(M) __stdio_init_mutex(& M) +#endif +#endif + /**********************************************************************/ #define __STDIO_IOFBF 0 /* Fully buffered. */ @@ -275,7 +283,7 @@ struct __STDIO_FILE_STRUCT { #endif #ifdef __UCLIBC_HAS_THREADS__ int __user_locking; - __UCLIBC_MUTEX(__lock); + __UCLIBC_IO_MUTEX(__lock); #endif /* Everything after this is unimplemented... and may be trashed. */ #if __STDIO_BUILTIN_BUF_SIZE > 0 @@ -351,9 +359,9 @@ extern void _stdio_term(void) attribute_hidden; extern struct __STDIO_FILE_STRUCT *_stdio_openlist; #ifdef __UCLIBC_HAS_THREADS__ -__UCLIBC_MUTEX_EXTERN(_stdio_openlist_add_lock); +__UCLIBC_IO_MUTEX_EXTERN(_stdio_openlist_add_lock); #ifdef __STDIO_BUFFERS -__UCLIBC_MUTEX_EXTERN(_stdio_openlist_del_lock); +__UCLIBC_IO_MUTEX_EXTERN(_stdio_openlist_del_lock); extern volatile int _stdio_openlist_use_count; /* _stdio_openlist_del_lock */ extern int _stdio_openlist_del_count; /* _stdio_openlist_del_lock */ #endif diff --git a/libc/sysdeps/linux/common/fsync.c b/libc/sysdeps/linux/common/fsync.c index 774efc9ce..711811f23 100644 --- a/libc/sysdeps/linux/common/fsync.c +++ b/libc/sysdeps/linux/common/fsync.c @@ -10,9 +10,28 @@ #include <sys/syscall.h> #include <unistd.h> -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(fsync) weak_function fsync; -strong_alias(fsync,__libc_fsync) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include "sysdep-cancel.h" +#else +#define SINGLE_THREAD_P 1 #endif -_syscall1(int, fsync, int, fd) +#define __NR___syscall_fsync __NR_fsync +static inline _syscall1(int, __syscall_fsync, int, fd) + +extern __typeof(fsync) __libc_fsync; + +int __libc_fsync(int fd) +{ + if (SINGLE_THREAD_P) + return __syscall_fsync(fd); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_fsync(fd); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} + +weak_alias(__libc_fsync, fsync) diff --git a/libc/sysdeps/linux/common/ioctl.c b/libc/sysdeps/linux/common/ioctl.c index 7ac8f16c2..f2f0f539a 100644 --- a/libc/sysdeps/linux/common/ioctl.c +++ b/libc/sysdeps/linux/common/ioctl.c @@ -11,20 +11,36 @@ #include <stdarg.h> #include <sys/ioctl.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif + +libc_hidden_proto(ioctl) #define __NR___syscall_ioctl __NR_ioctl static __always_inline -_syscall3(int, __syscall_ioctl, int, fd, int, request, void *, arg) +_syscall3(int, __syscall_ioctl, int, fd, unsigned long int, request, void *, arg) int ioctl(int fd, unsigned long int request, ...) { - void *arg; - va_list list; + void *arg; + va_list list; + + va_start(list, request); + arg = va_arg(list, void *); + + va_end(list); - va_start(list, request); - arg = va_arg(list, void *); - va_end(list); + if (SINGLE_THREAD_P) + return __syscall_ioctl(fd, request, arg); - return __syscall_ioctl(fd, request, arg); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_ioctl(fd, request, arg); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif } libc_hidden_def(ioctl) diff --git a/libc/sysdeps/linux/common/msync.c b/libc/sysdeps/linux/common/msync.c index 7a46f0c32..2629bd4aa 100644 --- a/libc/sysdeps/linux/common/msync.c +++ b/libc/sysdeps/linux/common/msync.c @@ -9,16 +9,33 @@ #include <sys/syscall.h> #include <unistd.h> +#include <sys/mman.h> -#if defined __NR_msync && defined __ARCH_USE_MMU__ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif -#include <sys/mman.h> +#define __NR___syscall_msync __NR_msync +static __always_inline _syscall3(int, __syscall_msync, void *, addr, size_t, length, + int, flags) -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(msync) weak_function msync; -strong_alias(msync,__libc_msync) +extern __typeof(msync) __libc_msync; +int __libc_msync(void * addr, size_t length, int flags) +{ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype, result; #endif -_syscall3(int, msync, void *, addr, size_t, length, int, flags) + if (SINGLE_THREAD_P) + return __syscall_msync(addr, length, flags); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + oldtype = LIBC_CANCEL_ASYNC (); + result = __syscall_msync(addr, length, flags); + LIBC_CANCEL_RESET (oldtype); + return result; #endif +} +weak_alias(__libc_msync,msync) diff --git a/libc/sysdeps/linux/common/nanosleep.c b/libc/sysdeps/linux/common/nanosleep.c index 0849127db..0be59c511 100644 --- a/libc/sysdeps/linux/common/nanosleep.c +++ b/libc/sysdeps/linux/common/nanosleep.c @@ -10,13 +10,32 @@ #include <sys/syscall.h> #include <time.h> -#if defined __USE_POSIX199309 && defined __NR_nanosleep -_syscall2(int, nanosleep, const struct timespec *, req, - struct timespec *, rem) -#ifndef __LINUXTHREADS_OLD__ -libc_hidden_def(nanosleep) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#include <pthreadP.h> #else -libc_hidden_weak(nanosleep) -strong_alias(nanosleep,__libc_nanosleep) +#define SINGLE_THREAD_P 1 #endif + +#define __NR___syscall_nanosleep __NR_nanosleep +static inline _syscall2(int, __syscall_nanosleep, const struct timespec *, req, + struct timespec *, rem); + +extern __typeof(nanosleep) __libc_nanosleep; + +int __libc_nanosleep(const struct timespec *req, struct timespec *rem) +{ + if (SINGLE_THREAD_P) + return __syscall_nanosleep(req, rem); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_nanosleep(req, rem); + LIBC_CANCEL_RESET (oldtype); + return result; #endif +} + +libc_hidden_proto(nanosleep) +weak_alias(__libc_nanosleep,nanosleep) +libc_hidden_weak(nanosleep) diff --git a/libc/sysdeps/linux/common/not-cancel.h b/libc/sysdeps/linux/common/not-cancel.h new file mode 100644 index 000000000..ebdc6078d --- /dev/null +++ b/libc/sysdeps/linux/common/not-cancel.h @@ -0,0 +1,19 @@ +/* By default we have none. Map the name to the normal functions. */ +#define open_not_cancel(name, flags, mode) \ + open (name, flags, mode) +#define open_not_cancel_2(name, flags) \ + open (name, flags) +#define close_not_cancel(fd) \ + close (fd) +#define close_not_cancel_no_status(fd) \ + (void) close (fd) +#define read_not_cancel(fd, buf, n) \ + read (fd, buf, n) +#define write_not_cancel(fd, buf, n) \ + write (fd, buf, n) +#define writev_not_cancel_no_status(fd, iov, n) \ + (void) writev (fd, iov, n) +#define fcntl_not_cancel(fd, cmd, val) \ + fcntl (fd, cmd, val) +# define waitpid_not_cancel(pid, stat_loc, options) \ + waitpid (pid, stat_loc, options) diff --git a/libc/sysdeps/linux/common/open64.c b/libc/sysdeps/linux/common/open64.c index cfe471c64..c1f5400b8 100644 --- a/libc/sysdeps/linux/common/open64.c +++ b/libc/sysdeps/linux/common/open64.c @@ -7,6 +7,10 @@ #include <features.h> #include <fcntl.h> #include <stdarg.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <errno.h> +#include <sysdep-cancel.h> +#endif #ifdef __UCLIBC_HAS_LFS__ @@ -28,7 +32,20 @@ int open64 (const char *file, int oflag, ...) va_end (arg); } - return open(file, oflag | O_LARGEFILE, mode); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + if (SINGLE_THREAD_P) + return INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode); + + LIBC_CANCEL_RESET (oldtype); + + return result; +#else + return open(file, oflag | O_LARGEFILE, mode); +#endif } #ifndef __LINUXTHREADS_OLD__ libc_hidden_def(open64) diff --git a/libc/sysdeps/linux/common/pause.c b/libc/sysdeps/linux/common/pause.c index 19ba30706..cd0ea4a77 100644 --- a/libc/sysdeps/linux/common/pause.c +++ b/libc/sysdeps/linux/common/pause.c @@ -10,18 +10,30 @@ #define __UCLIBC_HIDE_DEPRECATED__ #include <sys/syscall.h> #include <unistd.h> -#include <signal.h> -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(pause) weak_function pause; -strong_alias(pause, __libc_pause) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> #endif -#ifdef __NR_pause -_syscall0(int, pause) -#else -int pause(void) +#include <signal.h> + +/* Suspend the process until a signal arrives. + This always returns -1 and sets errno to EINTR. */ +int +__libc_pause (void) { - return __sigpause(sigblock(0), 0); + sigset_t set; + + __sigemptyset (&set); + sigprocmask (SIG_BLOCK, NULL, &set); + + /* pause is a cancellation point, but so is sigsuspend. + So no need for anything special here. */ + + return sigsuspend (&set); } +weak_alias (__libc_pause, pause) + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +LIBC_CANCEL_HANDLED (); /* sigsuspend handles our cancellation. */ #endif diff --git a/libc/sysdeps/linux/common/poll.c b/libc/sysdeps/linux/common/poll.c index 4a6f06e19..f50e92c8e 100644 --- a/libc/sysdeps/linux/common/poll.c +++ b/libc/sysdeps/linux/common/poll.c @@ -20,30 +20,33 @@ #include <sys/syscall.h> #include <sys/poll.h> -#ifdef __NR_poll +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif -_syscall3(int, poll, struct pollfd *, fds, - unsigned long int, nfds, int, timeout) +libc_hidden_proto(poll) -#elif defined(__NR_ppoll) && defined __UCLIBC_LINUX_SPECIFIC__ +#ifdef __NR_poll + +#define __NR___syscall_poll __NR_poll +static inline _syscall3(int, __syscall_poll, struct pollfd *, fds, + unsigned long int, nfds, int, timeout); int poll(struct pollfd *fds, nfds_t nfds, int timeout) { - struct timespec *ts = NULL, tval; - if (timeout > 0) { - tval.tv_sec = timeout / 1000; - tval.tv_nsec = (timeout % 1000) * 1000000; - ts = &tval; - } else if (timeout == 0) { - tval.tv_sec = 0; - tval.tv_nsec = 0; - ts = &tval; - } - return ppoll(fds, nfds, ts, NULL); + if (SINGLE_THREAD_P) + return __syscall_poll(fds, nfds, timeout); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_poll(fds, nfds, timeout); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif } - -#else -/* ugh, this arch lacks poll, so we need to emulate this crap ... */ +#else /* !__NR_poll */ #include <alloca.h> #include <sys/types.h> @@ -53,6 +56,9 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) #include <sys/param.h> #include <unistd.h> +libc_hidden_proto(getdtablesize) +libc_hidden_proto(select) + /* uClinux 2.0 doesn't have poll, emulate it using select */ /* Poll the file descriptors described by the NFDS structures starting at @@ -220,10 +226,4 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) } #endif - -#ifndef __LINUXTHREADS_OLD__ libc_hidden_def(poll) -#else -libc_hidden_weak(poll) -strong_alias(poll,__libc_poll) -#endif diff --git a/libc/sysdeps/linux/common/pselect.c b/libc/sysdeps/linux/common/pselect.c index 63ab0dbb1..7e93537dd 100644 --- a/libc/sysdeps/linux/common/pselect.c +++ b/libc/sysdeps/linux/common/pselect.c @@ -22,9 +22,12 @@ #include <stddef.h> /* For NULL. */ #include <sys/time.h> #include <sys/select.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#endif -extern __typeof(pselect) __libc_pselect; - +libc_hidden_proto(sigprocmask) +libc_hidden_proto(select) /* Check the first NFDS descriptors each in READFDS (if not NULL) for read @@ -33,8 +36,13 @@ extern __typeof(pselect) __libc_pselect; after waiting the interval specified therein. Additionally set the sigmask SIGMASK for this call. Returns the number of ready descriptors, or -1 for errors. */ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +static int +__pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, +#else int -__libc_pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, +pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, +#endif const struct timespec *timeout, const sigset_t *sigmask) { struct timeval tval; @@ -64,4 +72,23 @@ __libc_pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, return retval; } -weak_alias(__libc_pselect,pselect) + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +int +pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, + const struct timespec *timeout, const sigset_t *sigmask) +{ + if (SINGLE_THREAD_P) + return __pselect (nfds, readfds, writefds, exceptfds, + timeout, sigmask); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = __pselect (nfds, readfds, writefds, exceptfds, + timeout, sigmask); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +#endif diff --git a/libc/sysdeps/linux/common/readv.c b/libc/sysdeps/linux/common/readv.c index 3c40a0d8d..fce396d5f 100644 --- a/libc/sysdeps/linux/common/readv.c +++ b/libc/sysdeps/linux/common/readv.c @@ -2,7 +2,8 @@ /* * readv() for uClibc * - * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * Copyright (C) 2006 by Steven J. Hill <sjhill@realitydiluted.com> + * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ @@ -10,5 +11,40 @@ #include <sys/syscall.h> #include <sys/uio.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> + +/* We should deal with kernel which have a smaller UIO_FASTIOV as well + as a very big count. */ +static ssize_t __readv (int fd, const struct iovec *vector, int count) +{ + ssize_t bytes_read; + + bytes_read = INLINE_SYSCALL (readv, 3, fd, vector, count); + + if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV) + return bytes_read; + + /* glibc tries again, but we do not. */ + //return __atomic_readv_replacement (fd, vector, count); + + return -1; +} + +ssize_t readv (int fd, const struct iovec *vector, int count) +{ + if (SINGLE_THREAD_P) + return __readv (fd, vector, count); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = __readv (fd, vector, count); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +#else _syscall3(ssize_t, readv, int, filedes, const struct iovec *, vector, int, count) +#endif diff --git a/libc/sysdeps/linux/common/select.c b/libc/sysdeps/linux/common/select.c index caff28d7c..0c2d91984 100644 --- a/libc/sysdeps/linux/common/select.c +++ b/libc/sysdeps/linux/common/select.c @@ -11,15 +11,21 @@ #include <sys/select.h> #include <stdint.h> -extern __typeof(select) __libc_select; +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <sysdep-cancel.h> +#else +#define SINGLE_THREAD_P 1 +#endif #define USEC_PER_SEC 1000000L +extern __typeof(select) __libc_select; + #if !defined(__NR__newselect) && !defined(__NR_select) && defined __USE_XOPEN2K # define __NR___libc_pselect6 __NR_pselect6 _syscall6(int, __libc_pselect6, int, n, fd_set *, readfds, fd_set *, writefds, - fd_set *, exceptfds, const struct timespec *, timeout, - const sigset_t *, sigmask) + fd_set *, exceptfds, const struct timespec *, timeout, + const sigset_t *, sigmask) int __libc_select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout) @@ -30,12 +36,12 @@ int __libc_select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, _ts.tv_sec = timeout->tv_sec; /* GNU extension: allow for timespec values where the sub-sec - * field is equal to or more than 1 second. The kernel will - * reject this on us, so take care of the time shift ourself. - * Some applications (like readline and linphone) do this. - * See 'clarification on select() type calls and invalid timeouts' - * on the POSIX general list for more information. - */ + * field is equal to or more than 1 second. The kernel will + * reject this on us, so take care of the time shift ourself. + * Some applications (like readline and linphone) do this. + * See 'clarification on select() type calls and invalid timeouts' + * on the POSIX general list for more information. + */ usec = timeout->tv_usec; if (usec >= USEC_PER_SEC) { _ts.tv_sec += usec / USEC_PER_SEC; @@ -46,18 +52,41 @@ int __libc_select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, ts = &_ts; } - return __libc_pselect6(n, readfds, writefds, exceptfds, ts, 0); + if (SINGLE_THREAD_P) + return __libc_pselect6(n, readfds, writefds, exceptfds, ts, 0); +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __libc_pselect6(n, readfds, writefds, exceptfds, ts, 0); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif + } #else #ifdef __NR__newselect -# define __NR___libc_select __NR__newselect +# define __NR___syscall_select __NR__newselect #else -# define __NR___libc_select __NR_select +# define __NR___syscall_select __NR_select #endif -_syscall5(int, __libc_select, int, n, fd_set *, readfds, fd_set *, writefds, - fd_set *, exceptfds, struct timeval *, timeout) + +_syscall5(int, __syscall_select, int, n, fd_set *, readfds, + fd_set *, writefds, fd_set *, exceptfds, struct timeval *, timeout); + +int __libc_select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, + struct timeval *timeout) +{ + if (SINGLE_THREAD_P) + return __syscall_select(n, readfds, writefds, exceptfds, timeout); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = __syscall_select(n, readfds, writefds, exceptfds, timeout); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif +} #endif diff --git a/libc/sysdeps/linux/common/sigprocmask.c b/libc/sysdeps/linux/common/sigprocmask.c index 13bb2beb7..011d7b367 100644 --- a/libc/sysdeps/linux/common/sigprocmask.c +++ b/libc/sysdeps/linux/common/sigprocmask.c @@ -14,6 +14,7 @@ #undef sigprocmask +libc_hidden_proto(sigprocmask) #ifdef __NR_rt_sigprocmask @@ -24,20 +25,28 @@ _syscall4(int, __rt_sigprocmask, int, how, const sigset_t *, set, int sigprocmask(int how, const sigset_t * set, sigset_t * oldset) { - if (set && -# if (SIG_BLOCK == 0) && (SIG_UNBLOCK == 1) && (SIG_SETMASK == 2) - (((unsigned int) how) > 2) -# elif (SIG_BLOCK == 1) && (SIG_UNBLOCK == 2) && (SIG_SETMASK == 3) - (((unsigned int)(how-1)) > 2) -# else -# warning "compile time assumption violated.. slow path..." - ((how != SIG_BLOCK) && (how != SIG_UNBLOCK) - && (how != SIG_SETMASK)) +#ifdef SIGCANCEL + sigset_t local_newmask; + + /* + * The only thing we have to make sure here is that SIGCANCEL and + * SIGSETXID are not blocked. + */ + if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + local_newmask = *set; + __sigdelset (&local_newmask, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&local_newmask, SIGSETXID); # endif - ) { - __set_errno(EINVAL); - return -1; + set = &local_newmask; } +#endif + return __rt_sigprocmask(how, set, oldset, _NSIG / 8); } @@ -51,20 +60,28 @@ _syscall3(int, __syscall_sigprocmask, int, how, const sigset_t *, set, int sigprocmask(int how, const sigset_t * set, sigset_t * oldset) { - if (set && -# if (SIG_BLOCK == 0) && (SIG_UNBLOCK == 1) && (SIG_SETMASK == 2) - (((unsigned int) how) > 2) -# elif (SIG_BLOCK == 1) && (SIG_UNBLOCK == 2) && (SIG_SETMASK == 3) - (((unsigned int)(how-1)) > 2) -# else -# warning "compile time assumption violated.. slow path..." - ((how != SIG_BLOCK) && (how != SIG_UNBLOCK) - && (how != SIG_SETMASK)) +#ifdef SIGCANCEL + sigset_t local_newmask; + + /* + * The only thing we have to make sure here is that SIGCANCEL and + * SIGSETXID are not blocked. + */ + if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + local_newmask = *set; + __sigdelset (&local_newmask, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&local_newmask, SIGSETXID); # endif - ) { - __set_errno(EINVAL); - return -1; + set = &local_newmask; } +#endif + return (__syscall_sigprocmask(how, set, oldset)); } #endif diff --git a/libc/sysdeps/linux/common/sigsuspend.c b/libc/sysdeps/linux/common/sigsuspend.c index 3648e76b5..789eeda89 100644 --- a/libc/sysdeps/linux/common/sigsuspend.c +++ b/libc/sysdeps/linux/common/sigsuspend.c @@ -11,27 +11,49 @@ #if defined __USE_POSIX #include <signal.h> +#undef sigsuspend -extern __typeof(sigsuspend) __libc_sigsuspend; +libc_hidden_proto(sigsuspend) #ifdef __NR_rt_sigsuspend # define __NR___rt_sigsuspend __NR_rt_sigsuspend -static __inline__ _syscall2(int, __rt_sigsuspend, const sigset_t *, mask, size_t, size) -int __libc_sigsuspend(const sigset_t * mask) +# ifdef __UCLIBC_HAS_THREADS_NATIVE__ +# include <errno.h> +# include <sysdep-cancel.h> + +/* Change the set of blocked signals to SET, + wait until a signal arrives, and restore the set of blocked signals. */ +int sigsuspend (const sigset_t *set) +{ + if (SINGLE_THREAD_P) + return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +# else +static inline _syscall2(int, __rt_sigsuspend, const sigset_t *, mask, size_t, size); + +int sigsuspend(const sigset_t * mask) { return __rt_sigsuspend(mask, _NSIG / 8); } +# endif #else # define __NR___syscall_sigsuspend __NR_sigsuspend static __inline__ _syscall3(int, __syscall_sigsuspend, int, a, unsigned long int, b, unsigned long int, c) -int __libc_sigsuspend(const sigset_t * set) +int sigsuspend(const sigset_t * set) { return __syscall_sigsuspend(0, 0, set->__val[0]); } #endif -weak_alias(__libc_sigsuspend,sigsuspend) -libc_hidden_weak(sigsuspend) +libc_hidden_def(sigsuspend) #endif diff --git a/libc/sysdeps/linux/common/wait.c b/libc/sysdeps/linux/common/wait.c index b16495314..d4b79bd37 100644 --- a/libc/sysdeps/linux/common/wait.c +++ b/libc/sysdeps/linux/common/wait.c @@ -1,23 +1,43 @@ /* + * Copyright (C) 2006 Steven J. Hill <sjhill@realitydiluted.com> * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ - #include <stdlib.h> #include <syscall.h> #include <sys/types.h> #include <sys/wait.h> #include <sys/resource.h> -#ifdef __LINUXTHREADS_OLD__ -extern __typeof(wait) weak_function wait; -strong_alias(wait,__libc_wait) -#endif +/* Wait for a child to die. When one does, put its status in *STAT_LOC + * and return its process ID. For errors, return (pid_t) -1. */ +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <errno.h> +#include <sysdep-cancel.h> + +pid_t attribute_hidden +__libc_wait (__WAIT_STATUS_DEFN stat_loc) +{ + if (SINGLE_THREAD_P) + return INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, + (struct rusage *) NULL); + int oldtype = LIBC_CANCEL_ASYNC (); + + pid_t result = INLINE_SYSCALL (wait4, 4, WAIT_ANY, stat_loc, 0, + (struct rusage *) NULL); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +#else /* Wait for a child to die. When one does, put its status in *STAT_LOC * and return its process ID. For errors, return (pid_t) -1. */ -__pid_t wait(__WAIT_STATUS_DEFN stat_loc) +__pid_t __libc_wait (__WAIT_STATUS_DEFN stat_loc) { - return wait4(WAIT_ANY, stat_loc, 0, NULL); + return wait4 (WAIT_ANY, stat_loc, 0, (struct rusage *) NULL); } +#endif +weak_alias(__libc_wait,wait) diff --git a/libc/sysdeps/linux/common/waitpid.c b/libc/sysdeps/linux/common/waitpid.c index e46499377..d0437194d 100644 --- a/libc/sysdeps/linux/common/waitpid.c +++ b/libc/sysdeps/linux/common/waitpid.c @@ -1,5 +1,6 @@ /* vi: set sw=4 ts=4: */ /* + * Copyright (C) 2006 Steven J. Hill <sjhill@realitydiluted.com> * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. @@ -10,13 +11,27 @@ #include <sys/wait.h> #include <sys/resource.h> -__pid_t waitpid(__pid_t pid, int *wait_stat, int options) +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include "sysdep-cancel.h" +#else +#define SINGLE_THREAD_P 1 +#endif + +libc_hidden_proto(wait4) + +extern __typeof(waitpid) __libc_waitpid; +__pid_t __libc_waitpid(__pid_t pid, int *wait_stat, int options) { - return wait4(pid, wait_stat, options, NULL); + if (SINGLE_THREAD_P) + return wait4(pid, wait_stat, options, NULL); + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ + int oldtype = LIBC_CANCEL_ASYNC (); + int result = wait4(pid, wait_stat, options, NULL); + LIBC_CANCEL_RESET (oldtype); + return result; +#endif } -#ifndef __LINUXTHREADS_OLD__ -libc_hidden_def(waitpid) -#else +libc_hidden_proto(waitpid) +weak_alias(__libc_waitpid,waitpid) libc_hidden_weak(waitpid) -strong_alias(waitpid,__libc_waitpid) -#endif diff --git a/libc/sysdeps/linux/common/writev.c b/libc/sysdeps/linux/common/writev.c index 99de7e43d..bd0e4077d 100644 --- a/libc/sysdeps/linux/common/writev.c +++ b/libc/sysdeps/linux/common/writev.c @@ -10,5 +10,41 @@ #include <sys/syscall.h> #include <sys/uio.h> +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <errno.h> +#include <sysdep-cancel.h> + +/* We should deal with kernel which have a smaller UIO_FASTIOV as well + as a very big count. */ +static ssize_t __writev (int fd, const struct iovec *vector, int count) +{ + ssize_t bytes_written; + + bytes_written = INLINE_SYSCALL (writev, 3, fd, vector, count); + + if (bytes_written >= 0 || errno != EINVAL || count <= UIO_FASTIOV) + return bytes_written; + + /* glibc tries again, but we do not. */ + /* return __atomic_writev_replacement (fd, vector, count); */ + + return -1; +} + +ssize_t writev (int fd, const struct iovec *vector, int count) +{ + if (SINGLE_THREAD_P) + return __writev (fd, vector, count); + + int oldtype = LIBC_CANCEL_ASYNC (); + + ssize_t result = __writev (fd, vector, count); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +#else _syscall3(ssize_t, writev, int, filedes, const struct iovec *, vector, int, count) +#endif |