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[PATCH] Fix infinite loop when fopencookie custom write returns 0 on error
by Jan Vangorp 13 Jun '16

13 Jun '16

The man page for fopencookie prescribes that custom write functions should return 0 on error (and should definitely not return a negative value) [1]. However, the uClibc implementation expects a negative return value in case of an error (libc/stdio/_WRITE.c). If the write function returns 0 on error, we drop into an infinite loop if the error persists. This patch wraps the user supplied write function such that a 0 return value is converted to -1. errno is first set to EAGAIN such that if the custom write function does not set errno in case of error, this is treated as a "soft" error. Custom write functions that cater towards uClibc and _do_ return a negative value are not affected. If no custom write function is supplied, set errno to EINVAL such that this condition is treated as a "hard" error. Previously the behaviour depended on whether the last error before the write happened to be a "hard" or a "soft" error. [1] http://git.kernel.org/cgit/docs/man-pages/man-pages.git/tree/man3/fopencook… Signed-off-by: Jan Vangorp <jan.vangorp_ext(a)softathome.com> --- libc/stdio/_stdio.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/libc/stdio/_stdio.h b/libc/stdio/_stdio.h index 310510d..727e331 100644 --- a/libc/stdio/_stdio.h +++ b/libc/stdio/_stdio.h @@ -110,6 +110,18 @@ do { \ cfile->__gcs.NAME(cfile->__cookie, ##ARGS); \ } +#define __STDIO_STREAM_CUSTOM_WRITE_FUNC(S, ARGS...) \ + if (__STDIO_STREAM_IS_CUSTOM((S))) { \ + _IO_cookie_file_t *cfile = (_IO_cookie_file_t *) (S); \ + if (cfile->__gcs.write == NULL) { \ + __set_errno(EINVAL); \ + return -1; \ + } \ + __set_errno(EAGAIN); \ + ssize_t w = cfile->__gcs.write(cfile->__cookie, ##ARGS); \ + return (w == 0 ? -1 : w); \ + } + typedef struct { struct __STDIO_FILE_STRUCT __fp; void *__cookie; @@ -121,6 +133,7 @@ typedef struct { #undef __STDIO_STREAM_GLIBC_CUSTOM_FILEDES #define __STDIO_STREAM_IS_CUSTOM(S) (0) #define __STDIO_STREAM_CUSTOM_IO_FUNC(S, NAME, RC, ARGS...) +#define __STDIO_STREAM_CUSTOM_WRITE_FUNC(S, ARGS...) #endif /* __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__ */ @@ -135,7 +148,7 @@ static inline ssize_t __READ(FILE *stream, char *buf, size_t bufsize) static inline ssize_t __WRITE(FILE *stream, const char *buf, size_t bufsize) { - __STDIO_STREAM_CUSTOM_IO_FUNC(stream, write, -1, buf, bufsize); + __STDIO_STREAM_CUSTOM_WRITE_FUNC(stream, buf, bufsize); return write(stream->__filedes, buf, bufsize); } -- 1.9.1

2 1

uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-17-ge1eceda
by wbx＠helium.openadk.org 13 Jun '16

13 Jun '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via e1eceda87b2fa64ab17f3e32c81b9a97edc7cac7 (commit) via 96f2821683ec41a28b5aa6ec92245e47dfee989b (commit) via 568ceebf6adfc58c64a95133311268db626cdec2 (commit) from 0f541b5c48b7b0df80e2aaa8fdbf653a8b8bcd03 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit e1eceda87b2fa64ab17f3e32c81b9a97edc7cac7 Author: Max Filippov <jcmvbkbc(a)gmail.com> Date: Thu Jun 2 18:24:28 2016 +0300 tests: add %ms scanf format test Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com> commit 96f2821683ec41a28b5aa6ec92245e47dfee989b Author: Jan Vangorp <jan.vangorp_ext(a)softathome.com> Date: Thu Jun 9 00:00:49 2016 +0200 Fix return value of fwrite when a 'hard' error occurs When a 'hard' error occurs, fwrite reports that all data was written or buffered even if that is not the case. It should report how much data was actually written and buffered. Signed-off-by: Jan Vangorp <jan.vangorp_ext(a)softathome.com> commit 568ceebf6adfc58c64a95133311268db626cdec2 Author: Jan Vangorp <jan.vangorp_ext(a)softathome.com> Date: Thu Jun 9 00:00:18 2016 +0200 Fix infinite loop when fopencookie custom write returns 0 on error The man page for fopencookie prescribes that custom write functions should return 0 on error (and should definitely not return a negative value) [1]. However, the uClibc implementation expects a negative return value in case of an error (libc/stdio/_WRITE.c). If the write function returns 0 on error, we drop into an infinite loop if the error persists. This patch wraps the user supplied write function such that a 0 return value is converted to -1. errno is first set to EAGAIN such that if the custom write function does not set errno in case of error, this is treated as a "soft" error. Custom write functions that cater towards uClibc and _do_ return a negative value are not affected. If no custom write function is supplied, set errno to EINVAL such that this condition is treated as a "hard" error. Previously the behaviour depended on whether the last error before the write happened to be a "hard" or a "soft" error. [1] http://git.kernel.org/cgit/docs/man-pages/man-pages.git/tree/man3/fopencook… Signed-off-by: Jan Vangorp <jan.vangorp_ext(a)softathome.com> ----------------------------------------------------------------------- Summary of changes: libc/stdio/_WRITE.c | 1 + libc/stdio/_stdio.h | 15 ++++++++++++++- test/stdio/scanf_m.c | 17 ++++++++++------- 3 files changed, 25 insertions(+), 8 deletions(-) diff --git a/libc/stdio/_WRITE.c b/libc/stdio/_WRITE.c index 113f0eb..f95bd1b 100644 --- a/libc/stdio/_WRITE.c +++ b/libc/stdio/_WRITE.c @@ -76,6 +76,7 @@ size_t attribute_hidden __stdio_WRITE(register FILE *stream, */ if (errno != EINTR && errno != EAGAIN) { /* do we have other "soft" errors? */ + bufsize -= todo; break; } #ifdef __STDIO_BUFFERS diff --git a/libc/stdio/_stdio.h b/libc/stdio/_stdio.h index 310510d..727e331 100644 --- a/libc/stdio/_stdio.h +++ b/libc/stdio/_stdio.h @@ -110,6 +110,18 @@ do { \ cfile->__gcs.NAME(cfile->__cookie, ##ARGS); \ } +#define __STDIO_STREAM_CUSTOM_WRITE_FUNC(S, ARGS...) \ + if (__STDIO_STREAM_IS_CUSTOM((S))) { \ + _IO_cookie_file_t *cfile = (_IO_cookie_file_t *) (S); \ + if (cfile->__gcs.write == NULL) { \ + __set_errno(EINVAL); \ + return -1; \ + } \ + __set_errno(EAGAIN); \ + ssize_t w = cfile->__gcs.write(cfile->__cookie, ##ARGS); \ + return (w == 0 ? -1 : w); \ + } + typedef struct { struct __STDIO_FILE_STRUCT __fp; void *__cookie; @@ -121,6 +133,7 @@ typedef struct { #undef __STDIO_STREAM_GLIBC_CUSTOM_FILEDES #define __STDIO_STREAM_IS_CUSTOM(S) (0) #define __STDIO_STREAM_CUSTOM_IO_FUNC(S, NAME, RC, ARGS...) +#define __STDIO_STREAM_CUSTOM_WRITE_FUNC(S, ARGS...) #endif /* __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__ */ @@ -135,7 +148,7 @@ static inline ssize_t __READ(FILE *stream, char *buf, size_t bufsize) static inline ssize_t __WRITE(FILE *stream, const char *buf, size_t bufsize) { - __STDIO_STREAM_CUSTOM_IO_FUNC(stream, write, -1, buf, bufsize); + __STDIO_STREAM_CUSTOM_WRITE_FUNC(stream, buf, bufsize); return write(stream->__filedes, buf, bufsize); } diff --git a/test/stdio/scanf_m.c b/test/stdio/scanf_m.c index 0ce78b6..e1dde27 100644 --- a/test/stdio/scanf_m.c +++ b/test/stdio/scanf_m.c @@ -5,20 +5,23 @@ int main(void) { const char *buf = "hello world"; - char *ps = NULL, *pc = NULL; - char s[6], c; + char *ps = NULL, *pc = NULL, *ps2 = NULL; + char s[6], c, s2[5]; - /* Check that %[...]/%c work. */ - sscanf(buf, "%[a-z] %c", s, &c); - /* Check that %m[...]/%mc work. */ - sscanf(buf, "%m[a-z] %mc", &ps, &pc); + /* Check that %[...]/%c/%s work. */ + sscanf(buf, "%[a-z] %c %s", s, &c, s2); + /* Check that %m[...]/%mc/%ms work. */ + sscanf(buf, "%m[a-z] %mc %ms", &ps, &pc, &ps2); if (strcmp(ps, "hello") != 0 || *pc != 'w' || - strcmp(s, "hello") != 0 || c != 'w') + strcmp(ps2, "orld") != 0 || + strcmp(s, "hello") != 0 || c != 'w' || + strcmp(s2, "orld") != 0) return 1; free(ps); free(pc); + free(ps2); return 0; } hooks/post-receive -- uClibc-ng - small C library for embedded systems

1 0

[ARM] unnecessary busy loop in __lll_timedlock_wait
by Leonid Lisovskiy 12 Jun '16

12 Jun '16

Hi, I'm propose to take a glibc's commit 6d96f5e4c0 to solve the unnecessary busy loop in __lll_timedlock_wait on ARM, described in details at: https://sourceware.org/bugzilla/show_bug.cgi?id=15119 https://patchwork.ozlabs.org/patch/332656/ what is your opinion? Regards, Leonid

2 11

uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-14-g0f541b5
by wbx＠helium.openadk.org 12 Jun '16

12 Jun '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 0f541b5c48b7b0df80e2aaa8fdbf653a8b8bcd03 (commit) via a75ca05cf77652bebb01edfb0bc48cd78eab95dc (commit) via 1b49dc96d103e0151fee290d55cea55aa12c906d (commit) from bf70f6f1face8e36030544a74e5ea04903df16cb (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 0f541b5c48b7b0df80e2aaa8fdbf653a8b8bcd03 Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun Jun 12 11:41:23 2016 +0200 xtensa: use generic lowlevellock Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev(a)gmail.com> commit a75ca05cf77652bebb01edfb0bc48cd78eab95dc Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun Jun 12 11:10:17 2016 +0200 metag: use generic lowlevellock Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev(a)gmail.com> commit 1b49dc96d103e0151fee290d55cea55aa12c906d Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun Jun 12 01:15:47 2016 +0200 arc: use generic lowlevellock Simplify and use generic lowlevellock. Tested-by: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Signed-off-by: Leonid Lisovskiy <lly.dev(a)gmail.com> ----------------------------------------------------------------------- Summary of changes: .../nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch | 4 +- .../unix/sysv/linux/arc/libc-lowlevellock.c | 20 --- .../sysdeps/unix/sysv/linux/arc/lowlevellock.c | 128 ------------------- .../sysdeps/unix/sysv/linux/metag/Makefile.arch | 5 +- .../unix/sysv/linux/metag/libc-lowlevellock.c | 20 --- .../sysdeps/unix/sysv/linux/metag/lowlevellock.c | 136 --------------------- .../sysdeps/unix/sysv/linux/xtensa/lowlevellock.c | 132 -------------------- 7 files changed, 4 insertions(+), 441 deletions(-) delete mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c delete mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c delete mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c delete mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c delete mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch index 3b9db6a..468e646 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch @@ -6,10 +6,10 @@ # libpthread_linux_arch_SSRC = -libpthread_linux_arch_CSRC = pthread_once.c lowlevellock.c \ +libpthread_linux_arch_CSRC = pthread_once.c \ pt-__syscall_rt_sigaction.c pt-__syscall_error.c -libc_linux_arch_CSRC = fork.c libc-lowlevellock.c +libc_linux_arch_CSRC = fork.c libc_linux_arch_SSRC = clone.S vfork.S libc_linux_arch_SSRC-OMIT = waitpid.S diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c deleted file mode 100644 index a38923a..0000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c +++ /dev/null @@ -1,20 +0,0 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Paul Mackerras <paulus(a)au.ibm.com>, 2003. - - 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -/* No difference to lowlevellock.c, except we lose a couple of functions. */ -#include "lowlevellock.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c deleted file mode 100644 index fd39fe9..0000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c +++ /dev/null @@ -1,128 +0,0 @@ -/* low level locking for pthread library. Generic futex-using version. - Copyright (C) 2003, 2007 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Paul Mackerras <paulus(a)au.ibm.com>, 2003. - - 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 - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <sysdep.h> -#include <lowlevellock.h> -#include <sys/time.h> -#include <tls.h> -#include <tcb-offsets.h> - -void -#ifndef IS_IN_libpthread -weak_function -#endif -__lll_lock_wait_private (int *futex) -{ - if (*futex == 2) - lll_futex_wait (futex, 2, LLL_PRIVATE); - - while (atomic_exchange_acq (futex, 2) != 0) - lll_futex_wait (futex, 2, LLL_PRIVATE); -} - - -/* These functions don't get included in libc.so */ -#ifdef IS_IN_libpthread -void -__lll_lock_wait (int *futex, int private) -{ - if (*futex == 2) - lll_futex_wait (futex, 2, private); - - while (atomic_exchange_acq (futex, 2) != 0) - lll_futex_wait (futex, 2, private); -} - - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - /* Reject invalid timeouts. */ - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Try locking. */ - while (atomic_exchange_acq (futex, 2) != 0) - { - struct timeval tv; - - /* Get the current time. */ - (void) gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - struct timespec rt; - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* Wait. */ - lll_futex_timed_wait (futex, 2, &rt, private); - } - - return 0; -} - - -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - int tid; - - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Repeat until thread terminated. */ - while ((tid = *tidp) != 0) - { - struct timeval tv; - struct timespec rt; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* Wait until thread terminates. The kernel so far does not use - the private futex operations for this. */ - if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) - return ETIMEDOUT; - } - - return 0; -} -#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch index ddc7680..b38c375 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch @@ -7,10 +7,9 @@ libpthread_linux_arch_SSRC = libpthread_linux_arch_CSRC = pthread_once.c \ - pt-__syscall_rt_sigaction.c pt-__syscall_error.c \ - lowlevellock.c + pt-__syscall_rt_sigaction.c pt-__syscall_error.c -libc_linux_arch_CSRC = fork.c libc-lowlevellock.c +libc_linux_arch_CSRC = fork.c libc_linux_arch_SSRC = clone.S vfork.S libc_linux_arch_SSRC-OMIT = waitpid.S diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c deleted file mode 100644 index a38923a..0000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/libc-lowlevellock.c +++ /dev/null @@ -1,20 +0,0 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Paul Mackerras <paulus(a)au.ibm.com>, 2003. - - 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -/* No difference to lowlevellock.c, except we lose a couple of functions. */ -#include "lowlevellock.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c deleted file mode 100644 index 977213c..0000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/lowlevellock.c +++ /dev/null @@ -1,136 +0,0 @@ -/* low level locking for pthread library. Generic futex-using version. - Copyright (C) 2003, 2005, 2007 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <sysdep.h> -#include <lowlevellock.h> -#include <sys/time.h> -#include <tls.h> - -void -#ifndef IS_IN_libpthread -weak_function -#endif -__lll_lock_wait_private (int *futex) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, LLL_PRIVATE); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -/* These functions don't get included in libc.so */ -#ifdef IS_IN_libpthread -void -__lll_lock_wait (int *futex, int private) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - struct timespec rt; - - /* Reject invalid timeouts. */ - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Upgrade the lock. */ - if (atomic_exchange_acq (futex, 2) == 0) - return 0; - - do - { - struct timeval tv; - - /* Get the current time. */ - (void) gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - // XYZ: Lost the lock to check whether it was private. - lll_futex_timed_wait (futex, 2, &rt, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); - - return 0; -} - - -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - int tid; - - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Repeat until thread terminated. */ - while ((tid = *tidp) != 0) - { - struct timeval tv; - struct timespec rt; - - /* Get the current time. */ - (void) gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* Wait until thread terminates. */ - // XYZ: Lost the lock to check whether it was private. - if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) - return ETIMEDOUT; - } - - return 0; -} -#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c deleted file mode 100644 index 756f39f..0000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/lowlevellock.c +++ /dev/null @@ -1,132 +0,0 @@ -/* low level locking for pthread library. Generic futex-using version. - Copyright (C) 2003-2013 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 - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <sysdep.h> -#include <lowlevellock.h> -#include <sys/time.h> - -void -__lll_lock_wait_private (int *futex) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, LLL_PRIVATE); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -/* These functions don't get included in libc.so */ -#ifdef IS_IN_libpthread -void -__lll_lock_wait (int *futex, int private) -{ - do - { - int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1); - if (oldval != 0) - lll_futex_wait (futex, 2, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); -} - - -int -__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private) -{ - struct timespec rt; - - /* Reject invalid timeouts. */ - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Upgrade the lock. */ - if (atomic_exchange_acq (futex, 2) == 0) - return 0; - - do - { - struct timeval tv; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - // XYZ: Lost the lock to check whether it was private. - lll_futex_timed_wait (futex, 2, &rt, private); - } - while (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0); - - return 0; -} - - -int -__lll_timedwait_tid (int *tidp, const struct timespec *abstime) -{ - int tid; - - if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) - return EINVAL; - - /* Repeat until thread terminated. */ - while ((tid = *tidp) != 0) - { - struct timeval tv; - struct timespec rt; - - /* Get the current time. */ - (void) __gettimeofday (&tv, NULL); - - /* Compute relative timeout. */ - rt.tv_sec = abstime->tv_sec - tv.tv_sec; - rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; - if (rt.tv_nsec < 0) - { - rt.tv_nsec += 1000000000; - --rt.tv_sec; - } - - /* Already timed out? */ - if (rt.tv_sec < 0) - return ETIMEDOUT; - - /* Wait until thread terminates. */ - // XYZ: Lost the lock to check whether it was private. - if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT) - return ETIMEDOUT; - } - - return 0; -} -#endif hooks/post-receive -- uClibc-ng - small C library for embedded systems

1 0

[PATCH RESEND] Fix hardcoded mmap offset
by Eugeniy Paltsev 10 Jun '16

10 Jun '16

mmap offset must be a multiple of the page size. It was hardcoded to 4K, so mmap2 test failed on non-4K page size architectures. Now we get page size using sysconf(_SC_PAGE_SIZE). Build and run tests done on nsim arc hs38. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev(a)synopsys.com> --- Resending due to previously sent one was discarded by mailing list. test/mmap/mmap2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/mmap/mmap2.c b/test/mmap/mmap2.c index 8b94c61..1d5f5db 100644 --- a/test/mmap/mmap2.c +++ b/test/mmap/mmap2.c @@ -18,7 +18,7 @@ #define FATAL do { fprintf(stderr, "Error at line %d, file %s (%d) [%s]\n", \ __LINE__, __FILE__, errno, strerror(errno)); exit(1); } while(0) -#define MAP_SIZE 4096UL +#define MAP_SIZE sysconf(_SC_PAGESIZE) #define MAP_MASK (MAP_SIZE - 1) int main(int argc, char **argv) { -- 2.5.5

1 0

Re: [uclibc-ng-devel] Static + PIE support
by Waldemar Brodkorb 09 Jun '16

09 Jun '16

Hi Thomas, Thomas Petazzoni wrote, > Hello Waldemar, > > We discussed a while ago the problem of supporting the static + PIE > scenario, which currently causes some build failures of the Go-based > flannel package, due to Scrt1.o being missing. > > On IRC, you told me that Scrt1.o is properly produced by uClibc, and it > looks like you suspected there was some issue in how Buildroot then > packages the toolchain. So I looked at the build log of my toolchains, > and here is what I found. > > If I looked at the build log of the br-arm-full toolchain (an uClibc-ng > based toolchain for ARM, with all features enabled: C++, locales, > threads, wchar, etc.), I do see Scrt1.o being built: > > AS lib/crt1.o > AS lib/Scrt1.o > AS lib/crti.o > AS lib/crtn.o > > Then installed: > > install -m 644 ./lib/crt1.o ./lib/Scrt1.o ./lib/crti.o ./lib/crtn.o /opt/br-arm-full-2016.05-2-g5dabb45/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib// > > And it is properly present in the toolchain tarball: > > test@build:/opt$ tar tvf br-arm-full-2016.05-2-g5dabb45.tar.bz2 | grep crt > -rw-r--r-- test/test 972 2016-06-01 14:27 br-arm-full-2016.05-2-g5dabb45/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/crtn.o > -rw-r--r-- test/test 988 2016-06-01 14:27 br-arm-full-2016.05-2-g5dabb45/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/crti.o > -rw-r--r-- test/test 1004 2016-06-01 14:27 br-arm-full-2016.05-2-g5dabb45/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/crt1.o > -rw-r--r-- test/test 1080 2016-06-01 14:27 br-arm-full-2016.05-2-g5dabb45/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/Scrt1.o > -rw-r--r-- test/test 1108 2016-06-01 14:31 br-arm-full-2016.05-2-g5dabb45/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.8.5/crtendS.o > -rw-r--r-- test/test 1108 2016-06-01 14:31 br-arm-full-2016.05-2-g5dabb45/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.8.5/crtend.o > -rw-r--r-- test/test 2528 2016-06-01 14:31 br-arm-full-2016.05-2-g5dabb45/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.8.5/crtbegin.o > -rw-r--r-- test/test 2528 2016-06-01 14:31 br-arm-full-2016.05-2-g5dabb45/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.8.5/crtbeginT.o > -rw-r--r-- test/test 2928 2016-06-01 14:31 br-arm-full-2016.05-2-g5dabb45/lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.8.5/crtbeginS.o > > However, the flannel failures don't happen with br-arm-full, but only > with br-arm-full-static, which is the same toolchain, but built with > BR2_STATIC_LIBS=y. Due to this, uClibc is built with HAVE_SHARED > disabled. > > And in this case, Scrt1.o is not built: > > AS lib/crt1.o > AS lib/crti.o > AS lib/crtn.o > > And it is not installed: > > install -m 644 ./lib/crt1.o ./lib/crti.o ./lib/crtn.o /opt/br-arm-full-static-2016.05-2-g5dabb45/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib// > > This explains why there is no Scrt1.o in the generated Buildroot > toolchain. > > So I continue to believe that the problem is on uClibc's side, and not > on Buildroot's side. > > It would be good if you could investigate why uClibc doesn't produce > Scrt1.o when HAVE_SHARED is disabled. At the moment Scrt1.o is only build under following condition: ifeq ($(HAVE_SHARED)$(UCLIBC_FORMAT_SHARED_FLAT),y) I tried to compile a simple hello world as static PIE for ARM and this is not really straight forward. You need at least binutils 2.26 to use -W,--no-dynamic-linker otherwise PT_INTERP is added to the resulting executable. After that I tried to run it in Qemu (system and user level tried) and the binary fails to execute with a segmentation fault. So even if we add Scrt1.o somehow to the toolchains, the binaries will not work on the target. Scrt1.o is just PIC version of crt1.c. So the PIC assembly in uClibc-ng might be just broken. Is it really required for flannel to work to use static PIE? In my point of view it is some kind of security feature used on Linux together with address space layout randomization. I don't know flannel, but security related software as OpenSSH does allow to build with and without PIE. I am not if and when I can take a look at the startup code. A short test for MIPS showed other problems and didn't compile my hello world as static PIE. best regards Waldemar

2 3

uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-11-gbf70f6f
by wbx＠helium.openadk.org 08 Jun '16

08 Jun '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via bf70f6f1face8e36030544a74e5ea04903df16cb (commit) via 4fee9155f396cb2bcfe707f78aa4332837520f93 (commit) via 2e045f9867bfc62e64412bc039400d411da1d2d2 (commit) from d80e49d7b6da04efac6ece21497d32b14abb089f (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit bf70f6f1face8e36030544a74e5ea04903df16cb Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Wed Jun 8 21:49:04 2016 +0200 test: add new mmap tests from glibc Rename mmap2 test as this is a ARM specific test, only execute on ARM systems. Add more new tests from glibc. commit 4fee9155f396cb2bcfe707f78aa4332837520f93 Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Tue Jun 7 04:14:23 2016 +0200 ssp: remove SSP legacy code Nobody should use gcc 3.3 nowadays. commit 2e045f9867bfc62e64412bc039400d411da1d2d2 Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Tue Jun 7 03:54:20 2016 +0200 microblaze: remove unused dead code These files are not used, no regression found while running the testsuite. ----------------------------------------------------------------------- Summary of changes: extra/Configs/Config.in | 16 ---- ldso/ldso/ldso.c | 6 -- libc/misc/internals/__uClibc_main.c | 7 -- libc/sysdeps/linux/common/ssp.c | 27 +----- libc/sysdeps/linux/microblaze/Makefile.arch | 5 +- libc/sysdeps/linux/microblaze/crt0.S | 52 ----------- libc/sysdeps/linux/microblaze/fixdfsi.c | 85 ----------------- libc/sysdeps/linux/microblaze/floatlib.h | 140 ---------------------------- test/mmap/Makefile.in | 6 ++ test/mmap/{mmap2.c => mmap-arm.c} | 0 test/mmap/tst-mmap-eofsync.c | 106 +++++++++++++++++++++ test/mmap/tst-mmap-fflushsync.c | 99 ++++++++++++++++++++ test/mmap/tst-mmap-offend.c | 86 +++++++++++++++++ test/mmap/tst-mmap-setvbuf.c | 81 ++++++++++++++++ 14 files changed, 380 insertions(+), 336 deletions(-) delete mode 100644 libc/sysdeps/linux/microblaze/crt0.S delete mode 100644 libc/sysdeps/linux/microblaze/fixdfsi.c delete mode 100644 libc/sysdeps/linux/microblaze/floatlib.h create mode 100644 test/mmap/Makefile.in rename test/mmap/{mmap2.c => mmap-arm.c} (100%) create mode 100644 test/mmap/tst-mmap-eofsync.c create mode 100644 test/mmap/tst-mmap-fflushsync.c create mode 100644 test/mmap/tst-mmap-offend.c create mode 100644 test/mmap/tst-mmap-setvbuf.c diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index f3494db..a21bdac 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -2151,22 +2151,6 @@ config UCLIBC_HAS_SSP Most people will answer N. -config UCLIBC_HAS_SSP_COMPAT - bool "Support for gcc-3.x propolice smashing stack protector" - depends on UCLIBC_HAS_SSP - help - Add gcc-3.x propolice smashing stack protector to the library. - - This requires a patched version of GCC, supporting the - -fstack-protector[-all] options, with the __guard and - __stack_smash_handler functions removed from libgcc. - These functions are added to ldso/libc instead. - - More information at: - <http://www.research.ibm.com/trl/projects/security/ssp/> - - Most people will answer N. - config SSP_QUICK_CANARY bool "Use simple guard values without accessing /dev/urandom" depends on UCLIBC_HAS_SSP diff --git a/ldso/ldso/ldso.c b/ldso/ldso/ldso.c index 9f4e841..7bb6a34 100644 --- a/ldso/ldso/ldso.c +++ b/ldso/ldso/ldso.c @@ -120,9 +120,6 @@ static uintptr_t stack_chk_guard; * in local thread area. */ uintptr_t __stack_chk_guard attribute_relro; # endif -# ifdef __UCLIBC_HAS_SSP_COMPAT__ -uintptr_t __guard attribute_relro; -# endif #endif #ifdef __LDSO_SEARCH_INTERP_PATH__ @@ -1217,9 +1214,6 @@ of this helper program; chances are you did not intend to run this program.\n\ # else __stack_chk_guard = stack_chk_guard; # endif -# ifdef __UCLIBC_HAS_SSP_COMPAT__ - __guard = stack_chk_guard; -# endif #endif #ifdef __LDSO_PRELINK_SUPPORT__ diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c index 632a252..9bb81fc 100644 --- a/libc/misc/internals/__uClibc_main.c +++ b/libc/misc/internals/__uClibc_main.c @@ -61,10 +61,6 @@ static uintptr_t stack_chk_guard; /* for gcc-4.1 non-TLS */ uintptr_t __stack_chk_guard attribute_relro; # endif -/* for gcc-3.x + Etoh ssp */ -# ifdef __UCLIBC_HAS_SSP_COMPAT__ -uintptr_t __guard attribute_relro; -# endif # endif /* @@ -274,9 +270,6 @@ void __uClibc_init(void) # else __stack_chk_guard = stack_chk_guard; # endif -# ifdef __UCLIBC_HAS_SSP_COMPAT__ - __guard = stack_chk_guard; -# endif # endif #endif diff --git a/libc/sysdeps/linux/common/ssp.c b/libc/sysdeps/linux/common/ssp.c index 8dcc3dc..87e10c2 100644 --- a/libc/sysdeps/linux/common/ssp.c +++ b/libc/sysdeps/linux/common/ssp.c @@ -51,18 +51,11 @@ static void __cold do_msg(const char *msg1, const char *msg2, const char *msg3) } static void __cold attribute_noreturn -#ifdef __UCLIBC_HAS_SSP_COMPAT__ -ssp_handler(char func[]) -#else ssp_handler(void) -#endif { pid_t pid; static const char msg_ssd[] = "*** stack smashing detected ***: "; static const char msg_terminated[] = " terminated"; -#ifdef __UCLIBC_HAS_SSP_COMPAT__ - static const char msg_ssa[] = ": stack smashing attack in function "; -#endif #ifdef __DODEBUG__ struct sigaction sa; @@ -73,12 +66,7 @@ ssp_handler(void) sigprocmask(SIG_BLOCK, &mask, NULL); /* except SSP_SIGTYPE */ #endif -#ifdef __UCLIBC_HAS_SSP_COMPAT__ - if (func != NULL) - do_msg(__uclibc_progname, msg_ssa, func); - else -#endif - do_msg(msg_ssd, __uclibc_progname, msg_terminated); + do_msg(msg_ssd, __uclibc_progname, msg_terminated); pid = getpid(); #ifdef __DODEBUG__ @@ -96,20 +84,7 @@ ssp_handler(void) _exit(127); } -#ifdef __UCLIBC_HAS_SSP_COMPAT__ -void __stack_smash_handler(char func[], int damaged) attribute_noreturn __cold; -void __stack_smash_handler(char func[], int damaged attribute_unused) -{ - ssp_handler(func); -} - -void __stack_chk_fail(void) -{ - ssp_handler(NULL); -} -#else strong_alias(ssp_handler,__stack_chk_fail) -#endif #ifdef __UCLIBC_HAS_FORTIFY__ /* should be redone when activated to use common code above. diff --git a/libc/sysdeps/linux/microblaze/Makefile.arch b/libc/sysdeps/linux/microblaze/Makefile.arch index 8f14fb9..6f1e9fb 100644 --- a/libc/sysdeps/linux/microblaze/Makefile.arch +++ b/libc/sysdeps/linux/microblaze/Makefile.arch @@ -5,8 +5,5 @@ # # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. -CSRC-y := clone.c fixdfsi.c - +CSRC-y := clone.c SSRC-y := setjmp.S __longjmp.S vfork.S - -ARCH_HEADERS := floatlib.h diff --git a/libc/sysdeps/linux/microblaze/crt0.S b/libc/sysdeps/linux/microblaze/crt0.S deleted file mode 100644 index 6be1e4d..0000000 --- a/libc/sysdeps/linux/microblaze/crt0.S +++ /dev/null @@ -1,52 +0,0 @@ -/* - * libc/sysdeps/linux/microblaze/crt0.S -- Initial program entry point for linux/microblaze - * - * Copyright (C) 2003 John Williams <jwilliams(a)itee.uq.edu.au> - * Copyright (C) 2001,2002 NEC Corporation - * Copyright (C) 2001,2002 Miles Bader <miles(a)gnu.org> - * - * This file is subject to the terms and conditions of the GNU Lesser - * General Public License. See the file COPYING.LIB in the main - * directory of this archive for more details. - * - * Written by Miles Bader <miles(a)gnu.org> - */ - -#include <clinkage.h> - -/* Upon entry, the stack contains the following data: - argc, argv[0], ..., argv[argc-1], 0, envp[0], ..., 0 -*/ - - .text -C_ENTRY(_start): - lw r5, r0, r1 /* Arg 0: argc */ - - addi r6, r1, 4 /* Arg 1: argv */ - - /* Arg 2: envp */ - addi r3, r5, 1 /* skip argc elements to get envp start */ - /* ...plus the NULL at the end of argv */ - add r3, r3, r3 /* Make word offset */ - add r3, r3, r3 - add r7, r6, r3 /* add to argv to get offset */ - - /* tail-call uclibc's startup routine */ - brid C_SYMBOL_NAME(__uClibc_main) - nop - - -/* Stick in a dummy reference to `main', so that if an application - is linking when the `main' function is in a static library (.a) - we can be sure that `main' actually gets linked in. */ -L_dummy_main_reference: - .long C_SYMBOL_NAME(main) - -/* Define a symbol for the first piece of initialized data. */ - .data - .globl __data_start -__data_start: - .long 0 - .weak data_start - data_start = __data_start - diff --git a/libc/sysdeps/linux/microblaze/fixdfsi.c b/libc/sysdeps/linux/microblaze/fixdfsi.c deleted file mode 100644 index 1611176..0000000 --- a/libc/sysdeps/linux/microblaze/fixdfsi.c +++ /dev/null @@ -1,85 +0,0 @@ -/* -** libgcc support for software floating point. -** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved. -** Permission is granted to do *anything* you want with this file, -** commercial or otherwise, provided this message remains intact. So there! -** I would appreciate receiving any updates/patches/changes that anyone -** makes, and am willing to be the repository for said changes (am I -** making a big mistake?). - -Warning! Only single-precision is actually implemented. This file -won't really be much use until double-precision is supported. - -However, once that is done, this file might eventually become a -replacement for libgcc1.c. It might also make possible -cross-compilation for an IEEE target machine from a non-IEEE -host such as a VAX. - -If you'd like to work on completing this, please talk to rms(a)gnu.ai.mit.edu. - ---> Double precision floating support added by James Carlson on 20 April 1998. - -** -** Pat Wood -** Pipeline Associates, Inc. -** pipeline!phw(a)motown.com or -** sun!pipeline!phw or -** uunet!motown!pipeline!phw -** -** 05/01/91 -- V1.0 -- first release to gcc mailing lists -** 05/04/91 -- V1.1 -- added float and double prototypes and return values -** -- fixed problems with adding and subtracting zero -** -- fixed rounding in truncdfsf2 -** -- fixed SWAP define and tested on 386 -*/ - -/* -** The following are routines that replace the libgcc soft floating point -** routines that are called automatically when -msoft-float is selected. -** The support single and double precision IEEE format, with provisions -** for byte-swapped machines (tested on 386). Some of the double-precision -** routines work at full precision, but most of the hard ones simply punt -** and call the single precision routines, producing a loss of accuracy. -** long long support is not assumed or included. -** Overall accuracy is close to IEEE (actually 68882) for single-precision -** arithmetic. I think there may still be a 1 in 1000 chance of a bit -** being rounded the wrong way during a multiply. I'm not fussy enough to -** bother with it, but if anyone is, knock yourself out. -** -** Efficiency has only been addressed where it was obvious that something -** would make a big difference. Anyone who wants to do this right for -** best speed should go in and rewrite in assembler. -** -** I have tested this only on a 68030 workstation and 386/ix integrated -** in with -msoft-float. -*/ - -#include "floatlib.h" - -/* convert double to int */ -long -__fixdfsi (double a1) -{ - register union double_long dl1; - register int exp; - register long l; - - dl1.d = a1; - - if (!dl1.l.upper && !dl1.l.lower) - return (0); - - exp = EXPD (dl1) - EXCESSD - 31; - l = MANTD (dl1); - - if (exp > 0) - return SIGND(dl1) ? (1<<31) : ((1ul<<31)-1); - - /* shift down until exp = 0 or l = 0 */ - if (exp < 0 && exp > -32 && l) - l >>= -exp; - else - return (0); - - return (SIGND (dl1) ? -l : l); -} diff --git a/libc/sysdeps/linux/microblaze/floatlib.h b/libc/sysdeps/linux/microblaze/floatlib.h deleted file mode 100644 index 817ba7d..0000000 --- a/libc/sysdeps/linux/microblaze/floatlib.h +++ /dev/null @@ -1,140 +0,0 @@ -/* -** libgcc support for software floating point. -** Copyright (C) 1991 by Pipeline Associates, Inc. All rights reserved. -** Permission is granted to do *anything* you want with this file, -** commercial or otherwise, provided this message remains intact. So there! -** I would appreciate receiving any updates/patches/changes that anyone -** makes, and am willing to be the repository for said changes (am I -** making a big mistake?). - -Warning! Only single-precision is actually implemented. This file -won't really be much use until double-precision is supported. - -However, once that is done, this file might eventually become a -replacement for libgcc1.c. It might also make possible -cross-compilation for an IEEE target machine from a non-IEEE -host such as a VAX. - -If you'd like to work on completing this, please talk to rms(a)gnu.ai.mit.edu. - ---> Double precision floating support added by James Carlson on 20 April 1998. - -** -** Pat Wood -** Pipeline Associates, Inc. -** pipeline!phw(a)motown.com or -** sun!pipeline!phw or -** uunet!motown!pipeline!phw -** -** 05/01/91 -- V1.0 -- first release to gcc mailing lists -** 05/04/91 -- V1.1 -- added float and double prototypes and return values -** -- fixed problems with adding and subtracting zero -** -- fixed rounding in truncdfsf2 -** -- fixed SWAP define and tested on 386 -*/ - -/* -** The following are routines that replace the libgcc soft floating point -** routines that are called automatically when -msoft-float is selected. -** The support single and double precision IEEE format, with provisions -** for byte-swapped machines (tested on 386). Some of the double-precision -** routines work at full precision, but most of the hard ones simply punt -** and call the single precision routines, producing a loss of accuracy. -** long long support is not assumed or included. -** Overall accuracy is close to IEEE (actually 68882) for single-precision -** arithmetic. I think there may still be a 1 in 1000 chance of a bit -** being rounded the wrong way during a multiply. I'm not fussy enough to -** bother with it, but if anyone is, knock yourself out. -** -** Efficiency has only been addressed where it was obvious that something -** would make a big difference. Anyone who wants to do this right for -** best speed should go in and rewrite in assembler. -** -** I have tested this only on a 68030 workstation and 386/ix integrated -** in with -msoft-float. -*/ - -#ifndef __FLOAT_LIB_H__ -#define __FLOAT_LIB_H__ -/* the following deal with IEEE single-precision numbers */ -#define EXCESS 126 -#define SIGNBIT 0x80000000 -#define HIDDEN (1 << 23) -#define SIGN(fp) ((fp) & SIGNBIT) -#define EXP(fp) (((fp) >> 23) & 0xFF) -#define MANT(fp) (((fp) & 0x7FFFFF) | HIDDEN) -#define PACK(s,e,m) ((s) | ((e) << 23) | (m)) - -/* the following deal with IEEE double-precision numbers */ -#define EXCESSD 1022 -#define HIDDEND (1 << 20) -#define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF) -#define SIGND(fp) ((fp.l.upper) & SIGNBIT) -#define MANTD(fp) (((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \ - (fp.l.lower >> 22)) -#define HIDDEND_LL ((long long)1 << 52) -#define MANTD_LL(fp) ((fp.ll & (HIDDEND_LL-1)) | HIDDEND_LL) -#define PACKD_LL(s,e,m) (((long long)((s)+((e)<<20))<<32)|(m)) - -/* define SWAP for 386/960 reverse-byte-order brain-damaged CPUs */ -union double_long { - double d; -#ifdef SWAP - struct { - unsigned long lower; - long upper; - } l; -#else - struct { - long upper; - unsigned long lower; - } l; -#endif - long long ll; -}; - -union float_long - { - float f; - long l; - }; - -#endif - -/* Functions defined in different files */ - -float __addsf3 (float, float); -float __subsf3 (float, float); -long __cmpsf2 (float, float); -float __mulsf3 (float, float); -float __divsf3 (float, float); -double __floatsidf (register long); -double __floatdidf (register long long); -float __floatsisf (register long ); -float __floatdisf (register long long ); -float __negsf2 (float); -double __negdf2 (double); -double __extendsfdf2 (float); -float __truncdfsf2 (double); -long __cmpdf2 (double, double); -long __fixsfsi (float); -long __fixdfsi (double); -long long __fixdfdi (double); -unsigned long __fixunsdfsi (double); -unsigned long long __fixunsdfdi (double); -double __adddf3 (double, double); -double __subdf3 (double, double); -double __muldf3 (double, double); -double __divdf3 (double, double); -int __gtdf2 (double, double); -int __gedf2 (double, double); -int __ltdf2 (double, double); -int __ledf2 (double, double); -int __eqdf2 (double, double); -int __nedf2 (double, double); -int __gtsf2 (float, float); -int __gesf2 (float, float); -int __ltsf2 (float, float); -int __lesf2 (float, float); -int __eqsf2 (float, float); -int __nesf2 (float, float); diff --git a/test/mmap/Makefile.in b/test/mmap/Makefile.in new file mode 100644 index 0000000..7bb34ac --- /dev/null +++ b/test/mmap/Makefile.in @@ -0,0 +1,6 @@ +# uClibc mmap tests +# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + +ifneq ($(TARGET_ARCH),arm) +TESTS_DISABLED += mmap-arm +endif diff --git a/test/mmap/mmap2.c b/test/mmap/mmap-arm.c similarity index 100% rename from test/mmap/mmap2.c rename to test/mmap/mmap-arm.c diff --git a/test/mmap/tst-mmap-eofsync.c b/test/mmap/tst-mmap-eofsync.c new file mode 100644 index 0000000..e8ef727 --- /dev/null +++ b/test/mmap/tst-mmap-eofsync.c @@ -0,0 +1,106 @@ +/* Test program for synchronization of stdio state with file after EOF. */ + +#include <stdio.h> +#include <error.h> +#include <errno.h> + +static void do_prepare (void); +#define PREPARE(argc, argv) do_prepare () +static int do_test (void); +#define TEST_FUNCTION do_test () +#include <test-skeleton.c> + +static char *temp_file; +static int temp_fd; + +static char text1[] = "Line the first\n"; +static char text2[] = "Line the second\n"; + +static void +do_prepare (void) +{ + temp_fd = create_temp_file ("tst-mmap-eofsync.", &temp_file); + if (temp_fd == -1) + error (1, errno, "cannot create temporary file"); + else + { + ssize_t cc = write (temp_fd, text1, sizeof text1 - 1); + if (cc != sizeof text1 - 1) + error (1, errno, "cannot write to temporary file"); + } +} + +static int +do_test (void) +{ + FILE *f; + char buf[128]; + int result = 0; + int c; + + f = fopen (temp_file, "rm"); + if (f == NULL) + { + perror (temp_file); + return 1; + } + + if (fgets (buf, sizeof buf, f) == NULL) + { + perror ("fgets"); + return 1; + } + + if (strcmp (buf, text1)) + { + printf ("read \"%s\", expected \"%s\"\n", buf, text1); + result = 1; + } + + printf ("feof = %d, ferror = %d immediately after fgets\n", + feof (f), ferror (f)); + +#if 1 + c = fgetc (f); + if (c == EOF) + printf ("fgetc -> EOF (feof = %d, ferror = %d)\n", + feof (f), ferror (f)); + else + { + printf ("fgetc returned %o (feof = %d, ferror = %d)\n", + c, feof (f), ferror (f)); + result = 1; + } +#endif + + c = write (temp_fd, text2, sizeof text2 - 1); + if (c == sizeof text2 - 1) + printf ("wrote more to file\n"); + else + { + printf ("wrote %d != %zd (%m)\n", c, sizeof text2 - 1); + result = 1; + } + + if (fgets (buf, sizeof buf, f) == NULL) + { + printf ("second fgets fails: feof = %d, ferror = %d (%m)\n", + feof (f), ferror (f)); + clearerr (f); + if (fgets (buf, sizeof buf, f) == NULL) + { + printf ("retry fgets fails: feof = %d, ferror = %d (%m)\n", + feof (f), ferror (f)); + result = 1; + } + } + if (result == 0 && strcmp (buf, text2)) + { + printf ("second time read \"%s\", expected \"%s\"\n", buf, text2); + result = 1; + } + + fclose (f); + + return result; +} diff --git a/test/mmap/tst-mmap-fflushsync.c b/test/mmap/tst-mmap-fflushsync.c new file mode 100644 index 0000000..24ae33c --- /dev/null +++ b/test/mmap/tst-mmap-fflushsync.c @@ -0,0 +1,99 @@ +/* Test program for synchronization of stdio state with file after fflush. */ + +#include <stdio.h> +#include <error.h> +#include <errno.h> + +static void do_prepare (void); +#define PREPARE(argc, argv) do_prepare () +static int do_test (void); +#define TEST_FUNCTION do_test () +#include <test-skeleton.c> + +static char *temp_file; +static int temp_fd; + +static char text1[] = "Line the first\n"; +static char text2[] = "Line the second\n"; + +static void +do_prepare (void) +{ + temp_fd = create_temp_file ("tst-mmap-eofsync.", &temp_file); + if (temp_fd == -1) + error (1, errno, "cannot create temporary file"); + else + { + ssize_t cc = write (temp_fd, text1, sizeof text1 - 1); + if (cc != sizeof text1 - 1) + error (1, errno, "cannot write to temporary file"); + } +} + +static int +do_test (void) +{ + FILE *f; + char buf[128]; + int result = 0; + int c; + + f = fopen (temp_file, "rm"); + if (f == NULL) + { + perror (temp_file); + return 1; + } + + if (fgets (buf, sizeof buf, f) == NULL) + { + perror ("fgets"); + return 1; + } + + if (strcmp (buf, text1)) + { + printf ("read \"%s\", expected \"%s\"\n", buf, text1); + result = 1; + } + + printf ("feof = %d, ferror = %d immediately after fgets\n", + feof (f), ferror (f)); + + if (fflush (f) != 0) + { + printf ("fflush failed! %m\n"); + result = 1; + } + + c = write (temp_fd, text2, sizeof text2 - 1); + if (c == sizeof text2 - 1) + printf ("wrote more to file\n"); + else + { + printf ("wrote %d != %zd (%m)\n", c, sizeof text2 - 1); + result = 1; + } + + if (fgets (buf, sizeof buf, f) == NULL) + { + printf ("second fgets fails: feof = %d, ferror = %d (%m)\n", + feof (f), ferror (f)); + clearerr (f); + if (fgets (buf, sizeof buf, f) == NULL) + { + printf ("retry fgets fails: feof = %d, ferror = %d (%m)\n", + feof (f), ferror (f)); + result = 1; + } + } + if (result == 0 && strcmp (buf, text2)) + { + printf ("second time read \"%s\", expected \"%s\"\n", buf, text2); + result = 1; + } + + fclose (f); + + return result; +} diff --git a/test/mmap/tst-mmap-offend.c b/test/mmap/tst-mmap-offend.c new file mode 100644 index 0000000..19732e6 --- /dev/null +++ b/test/mmap/tst-mmap-offend.c @@ -0,0 +1,86 @@ +/* Test case for bug with mmap stdio read past end of file. */ + +#include <stdio.h> +#include <error.h> +#include <errno.h> + +static void do_prepare (void); +#define PREPARE(argc, argv) do_prepare () +static int do_test (void); +#define TEST_FUNCTION do_test () +#include <test-skeleton.c> + +static char *temp_file; + +static const char text1[] = "hello\n"; + +static void +do_prepare (void) +{ + int temp_fd = create_temp_file ("tst-mmap-offend.", &temp_file); + if (temp_fd == -1) + error (1, errno, "cannot create temporary file"); + else + { + ssize_t cc = write (temp_fd, text1, sizeof text1 - 1); + if (cc != sizeof text1 - 1) + error (1, errno, "cannot write to temporary file"); + } + close (temp_fd); +} + +static int +do_test (void) +{ + unsigned char buffer[8192]; + int result = 0; + FILE *f = fopen (temp_file, "rm"); + size_t cc; + + if (f == NULL) + { + perror (temp_file); + return 1; + } + + cc = fread (buffer, 1, sizeof (buffer), f); + printf ("fread %zu: \"%.*s\"\n", cc, (int) cc, buffer); + if (cc != sizeof text1 - 1) + { + perror ("fread"); + result = 1; + } + + if (fseek (f, 2048, SEEK_SET) != 0) + { + perror ("fseek off end"); + result = 1; + } + + if (fread (buffer, 1, sizeof (buffer), f) != 0 + || ferror (f) || !feof (f)) + { + printf ("after fread error %d eof %d\n", + ferror (f), feof (f)); + result = 1; + } + + printf ("ftell %ld\n", ftell (f)); + + if (fseek (f, 0, SEEK_SET) != 0) + { + perror ("fseek rewind"); + result = 1; + } + + cc = fread (buffer, 1, sizeof (buffer), f); + printf ("fread after rewind %zu: \"%.*s\"\n", cc, (int) cc, buffer); + if (cc != sizeof text1 - 1) + { + perror ("fread after rewind"); + result = 1; + } + + fclose (f); + return result; +} diff --git a/test/mmap/tst-mmap-setvbuf.c b/test/mmap/tst-mmap-setvbuf.c new file mode 100644 index 0000000..33d60b7 --- /dev/null +++ b/test/mmap/tst-mmap-setvbuf.c @@ -0,0 +1,81 @@ +/* Test setvbuf on readonly fopen (using mmap stdio). + Copyright (C) 2002-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub(a)redhat.com>, 2002. + + 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 + <http://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +int main (void) +{ + char name[] = "/tmp/tst-mmap-setvbuf.XXXXXX"; + char buf[4096]; + const char * const test = "Let's see if mmap stdio works with setvbuf.\n"; + char temp[strlen (test) + 1]; + int fd = mkstemp (name); + FILE *f; + + if (fd == -1) + { + printf ("%u: cannot open temporary file: %m\n", __LINE__); + exit (1); + } + + f = fdopen (fd, "w"); + if (f == NULL) + { + printf ("%u: cannot fdopen temporary file: %m\n", __LINE__); + exit (1); + } + + fputs (test, f); + fclose (f); + + f = fopen (name, "rm"); + if (f == NULL) + { + printf ("%u: cannot fopen temporary file: %m\n", __LINE__); + exit (1); + } + + if (setvbuf (f, buf, _IOFBF, sizeof buf)) + { + printf ("%u: setvbuf failed: %m\n", __LINE__); + exit (1); + } + + if (fread (temp, 1, strlen (test), f) != strlen (test)) + { + printf ("%u: couldn't read the file back: %m\n", __LINE__); + exit (1); + } + temp [strlen (test)] = '\0'; + + if (strcmp (test, temp)) + { + printf ("%u: read different string than was written:\n%s%s", + __LINE__, test, temp); + exit (1); + } + + fclose (f); + + unlink (name); + exit (0); +} hooks/post-receive -- uClibc-ng - small C library for embedded systems

1 0

[PATCH] fix uClibc-ng scanf check
by Waldemar Brodkorb 06 Jun '16

06 Jun '16

uClibc-ng tries to be compatible with GNU libc and defines __GLIBC__ and pretend to be version 2.2. We once changed it to 2.10, but then some hard to fix problems in different software packages (gcc) occured. It would be better if we disable the special GNU libc checks for uClibc-ng here. uClibc-ng implements the required scanf functionality. Signed-off-by: Waldemar Brodkorb <wbx(a)uclibc-ng.org> --- configure.ac | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index f36b18c..4661c0d 100644 --- a/configure.ac +++ b/configure.ac @@ -581,7 +581,7 @@ AC_CACHE_VAL([scanf_cv_alloc_modifier], #include <stdio.h> #include <unistd.h> - #ifdef __GLIBC__ + #if defined(__GLIBC__) && !defined(__UCLIBC__) #if !(__GLIBC_PREREQ(2, 7)) #error %m is not available -- 2.1.4

5 8

uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-8-gd80e49d
by wbx＠helium.openadk.org 05 Jun '16

05 Jun '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via d80e49d7b6da04efac6ece21497d32b14abb089f (commit) from 84b58ef8701d3d7d6071b391196ee78556f724df (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit d80e49d7b6da04efac6ece21497d32b14abb089f Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sun Jun 5 23:09:24 2016 +0200 test: quieten some gcc warnings Fix some gcc warnings while compiling the testsuite. ----------------------------------------------------------------------- Summary of changes: test/dlopen/tst-origin.c | 2 +- test/locale-mbwc/dat_mbtowc.c | 8 ++++---- test/locale-mbwc/tst_funcs.h | 4 +--- test/locale-mbwc/tst_mbrtowc.c | 9 +-------- test/test-skeleton.c | 3 --- 5 files changed, 7 insertions(+), 19 deletions(-) diff --git a/test/dlopen/tst-origin.c b/test/dlopen/tst-origin.c index a12be41..60fcd3f 100644 --- a/test/dlopen/tst-origin.c +++ b/test/dlopen/tst-origin.c @@ -9,7 +9,7 @@ extern void _dlinfo(void); int main(int argc, char **argv) { void *h1, *h2; - int (*mydltest)(const char *s); + int __attribute__((unused))(*mydltest)(const char *s); char *error; h1 = dlopen ("libtest31.so", RTLD_LAZY); diff --git a/test/locale-mbwc/dat_mbtowc.c b/test/locale-mbwc/dat_mbtowc.c index 6527dfc..9a7a9c3 100644 --- a/test/locale-mbwc/dat_mbtowc.c +++ b/test/locale-mbwc/dat_mbtowc.c @@ -135,7 +135,7 @@ TST_MBTOWC tst_mbtowc_loc [] = { { { 0, 1, "\xfc\xe4\xf6", MB_LEN_MAX }, { 0, 1, "\177", MB_LEN_MAX }, - { 0, 0, (char)NULL, MB_LEN_MAX }, + { 0, 0, NULL, MB_LEN_MAX }, } }, { @@ -221,7 +221,7 @@ TST_MBTOWC tst_mbtowc_loc [] = { { { 0, 1, "ABC", MB_LEN_MAX }, { 0, 1, "\177", MB_LEN_MAX }, - { 0, 0, (char)NULL, MB_LEN_MAX }, + { 0, 0, NULL, MB_LEN_MAX }, } }, { @@ -322,7 +322,7 @@ TST_MBTOWC tst_mbtowc_loc [] = { { { 0, 1, "\244\242A", MB_LEN_MAX }, { 0, 1, "\177\244\242", MB_LEN_MAX }, - { 0, 0, (char)NULL, MB_LEN_MAX }, + { 0, 0, NULL, MB_LEN_MAX }, } }, { @@ -423,7 +423,7 @@ TST_MBTOWC tst_mbtowc_loc [] = { { { 0, 1, "\343\201\202A", MB_LEN_MAX }, { 0, 1, "\177\343\201\202", MB_LEN_MAX }, - { 0, 0, (char)NULL, MB_LEN_MAX }, + { 0, 0, NULL, MB_LEN_MAX }, } }, { diff --git a/test/locale-mbwc/tst_funcs.h b/test/locale-mbwc/tst_funcs.h index 4bd0fb1..02d5d34 100644 --- a/test/locale-mbwc/tst_funcs.h +++ b/test/locale-mbwc/tst_funcs.h @@ -84,7 +84,7 @@ extern int result (FILE * fp, char res, const char *func, const char *loc, #define TST_DECL_VARS(_type_) \ int loc, rec, err_count = 0; \ int warn_count __attribute__ ((unused)); \ - int func_id, seq_num = 0; \ + int seq_num = 0; \ const char *locale; \ int err_exp, ret_flg; \ int errno_save = 0; \ @@ -97,7 +97,6 @@ extern int result (FILE * fp, char res, const char *func, const char *loc, #ifdef __UCLIBC_HAS_LOCALE__ #define TST_HEAD_LOCALE(ofunc, s_func) \ - func_id = TST_HEAD (ofunc).func_id; \ locale = TST_HEAD (ofunc).locale; \ if (setlocale (LC_ALL, locale) == NULL) \ { \ @@ -109,7 +108,6 @@ extern int result (FILE * fp, char res, const char *func, const char *loc, } #else #define TST_HEAD_LOCALE(ofunc, s_func) \ - func_id = TST_HEAD (ofunc).func_id; \ locale = TST_HEAD (ofunc).locale; \ if (strcmp(locale, "C") == 0) \ { \ diff --git a/test/locale-mbwc/tst_mbrtowc.c b/test/locale-mbwc/tst_mbrtowc.c index 3a6070a..b6247ce 100644 --- a/test/locale-mbwc/tst_mbrtowc.c +++ b/test/locale-mbwc/tst_mbrtowc.c @@ -16,7 +16,7 @@ tst_mbrtowc (FILE * fp, int debug_flg) char w_flg, s_flg; char *s; size_t n; - char t_flg, t_ini; + char t_flg; static mbstate_t t = { 0 }; mbstate_t *pt; wchar_t wc, *pwc, wc_ex; @@ -42,7 +42,6 @@ tst_mbrtowc (FILE * fp, int debug_flg) s = TST_INPUT_SEQ (mbrtowc).s; n = TST_INPUT_SEQ (mbrtowc).n; t_flg = TST_INPUT_SEQ (mbrtowc).t_flg; - t_ini = TST_INPUT_SEQ (mbrtowc).t_init; pwc = (w_flg == 0) ? NULL : &wc; if (s_flg == 0) @@ -56,12 +55,6 @@ tst_mbrtowc (FILE * fp, int debug_flg) } pt = (t_flg == 0) ? NULL : &t; -#if 0 - if (t_ini != 0) - { - memset (&t, 0, sizeof (t)); - } -#endif TST_CLEAR_ERRNO; ret = mbrtowc (pwc, s, n, pt); TST_SAVE_ERRNO; diff --git a/test/test-skeleton.c b/test/test-skeleton.c index 85b4e67..cf136ac 100644 --- a/test/test-skeleton.c +++ b/test/test-skeleton.c @@ -325,9 +325,6 @@ main (int argc, char *argv[]) if (pid == 0) { /* This is the child. */ -#ifdef RLIMIT_DATA - struct rlimit data_limit; -#endif #ifdef RLIMIT_CORE /* Try to avoid dumping core. */ struct rlimit core_limit; hooks/post-receive -- uClibc-ng - small C library for embedded systems

1 0

uClibc-ng - small C library for embedded systems branch master updated. v1.0.15-7-g84b58ef
by wbx＠helium.openadk.org 04 Jun '16

04 Jun '16

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 84b58ef8701d3d7d6071b391196ee78556f724df (commit) from c0f118c8869b9095612dfcc4a279e957b67a8efa (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 84b58ef8701d3d7d6071b391196ee78556f724df Author: Waldemar Brodkorb <wbx(a)uclibc-ng.org> Date: Sat Jun 4 22:44:05 2016 +0200 test: sync with GNU libc See here: https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=900056024b75ea… Fixes testsuite runs on newer kernels. ----------------------------------------------------------------------- Summary of changes: test/test-skeleton.c | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/test/test-skeleton.c b/test/test-skeleton.c index 4f26804..85b4e67 100644 --- a/test/test-skeleton.c +++ b/test/test-skeleton.c @@ -336,22 +336,6 @@ main (int argc, char *argv[]) setrlimit (RLIMIT_CORE, &core_limit); #endif -#ifdef RLIMIT_DATA - /* Try to avoid eating all memory if a test leaks. */ - if (getrlimit (RLIMIT_DATA, &data_limit) == 0) - { - if (TEST_DATA_LIMIT == RLIM_INFINITY) - data_limit.rlim_cur = data_limit.rlim_max; - else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT) - data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT, - data_limit.rlim_max); - if (setrlimit (RLIMIT_DATA, &data_limit) < 0) - perror ("setrlimit: RLIMIT_DATA"); - } - else - perror ("getrlimit: RLIMIT_DATA"); -#endif - /* We put the test process in its own pgrp so that if it bogusly generates any job control signals, they won't hit the whole build. */ if (setpgid (0, 0) != 0) hooks/post-receive -- uClibc-ng - small C library for embedded systems

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