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2015-03-18malloc-standard: Add locking to malloc_trimBernhard Reutner-Fischer
Closes bugzilla #4586 Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-03-18malloc: checked_request2size failure deadlocksZhiqiang Zhang
For some rarely cases(almost App bugs), calling malloc with a very largre size, checked_request2size check will fail,set ENOMEM, and return 0 to caller. But this will let __malloc_lock futex locked and owned by the caller. In multithread circumstance, other thread calling malloc/calloc will NOT succeed and get locked. Signed-off-by: Zhiqiang Zhang <zhangzhiqiang.zhang@huawei.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-01-23add argument check in setenv()Xishi Qiu
setenv() in glibc/eglibc will check the argument, like this, ... if (name == NULL || *name == '\0' || strchr (name, '=') != NULL) { __set_errno (EINVAL); return -1; } ... So add argument check in uclibc's setenv() too. Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2015-01-22libc: Avoid redundant setting of ENOMEMBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2014-12-15mkostemp: fix implementationAnthony G. Basile
mkostemp(char *template, int flags) generates a unique temporary filename from a template. The flags parameter accepts three of the same flags as open(2): O_APPEND, O_CLOEXEC, and O_SYNC. The current implementation of mkostemp(3) does not respect the flags and in fact confuses the flags with the file mode which should always be S_IRUSR | S_IWUSR. This patch corrects this issue. Signed-off-by: Anthony G. Basile <blueness@gentoo.org> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2014-09-16libc: silence missing prototype warningBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2014-08-28Revert "sparc: disable cancellable system, as it fails in strange ways right ↵Waldemar Brodkorb
now" This reverts commit 1db4f8f8389f6a935ecd83aff7fcce5d1cf2c0f3. It is unclear in which way this is breaking sparc systems. With this change added you get following linking error: libpthread/nptl/libpthread_so.a(pt-system.oS): In function `__libc_system': libc/stdlib/system.c:64: undefined reference to `__wait4_nocancel' Signed-off-by: Waldemar Brodkorb <wbx@openadk.org> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-04-04add UCLIBC_SUSV2_LEGACY to hide vallocBernhard Reutner-Fischer
valloc was marked as LEGACY in SUSv2, removed from SUSv3 and later. TODO: Remove this (point people to memalign and it's successors?). Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-04-03stdlib: avoid relocationBernhard Reutner-Fischer
valloc uses memalign Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-02-11stdlib: Fix fndecl of mkostemp, mkostemp64Bernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-02-05mman: rename MAP_UNINITIALIZE to MAP_UNINITIALIZEDBernhard Reutner-Fischer
The name was changed to include a trailing 'D' when it went into the kernel. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-02-05buildsys: switch libc to kbuild-styleBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-02-05libc: atexit: reuse free slots at the end of exit functions tableRonald Wahl
Continuosly dlopen and dlclose of shared object will cause a memory leak in atexit function. This fix reuse free slots at the end of the list. For further detail see https://bugs.busybox.net/show_bug.cgi?id=2455 Signed-off-by: Ronald Wahl <ronald.wahl@raritan.com> Tested-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2012-11-29libc/stdlib: localize __unix_grantptMike Frysinger
When ASSUME_DEVPTS is disabled, we end up exporting __unix_grantpt and get a reloc to it from grantpt. Mark it static to fix all of that. Reported-by: Michael Deutschmann <michael@talamasca.ocis.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-11-18drop support for pre ISO-C compilersMike Frysinger
This drops __signed, __volatile, and __const. Only the latter was used in the code base, and for uClibc, not consistently. Much of the code used plain "const" which meant "__const" was useless. Really, the point of this is to stay in sync with what glibc did. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-11-18Replace FSF snail mail address with URLsMike Frysinger
This matches a similar change made to glibc. No functional changes here. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-11-14libc/stdlib: add mkostemp helpersMike Frysinger
Some projects (like udev) are starting to use this. Imported from glibc. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-06-15update arc4random from bug #885Peter S. Mazinger
Add config option to provide arc4random without device access. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15wait4.c: provide hidden __wait4_nocancel independent of any guardsPeter S. Mazinger
Correct wait4 guard (it is only __USE_BSD) wait3, system: use __wait4_nocancel Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15stdlib.c: remove comment about _Exit, it is provided in _exit.cPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15add lcong48[_r]Peter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15getpt.c: no need for hidden posix_openptPeter S. Mazinger
Prefer static inline instead of hidden (__bsd_getpt) Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15malloc.h: use sysconf(_SC_PAGESIZE) instead of __pagesizePeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15malloc.h: hide internal functions (mainly debug related)Peter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15malloc-simple: make _aligned_blocks static and __libc_free_aligned hiddenPeter S. Mazinger
move __libc_free_aligned prototype up to a common place. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15malloc: use uClibc_mutex.h provided macros consequentlyPeter S. Mazinger
use the __UCLIBC_MUTEX macros remove unused code remove duplicated code (likely,unlikely) hide internal __x() functions (mainly debug related) Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15memalign.c: does not use MAX, do not include param.hPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15do not define _ISOC99_SOURCE in specific filesPeter S. Mazinger
This should come properly from features.h or the build. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15remove duplicate prototypes for _stdio_term().Peter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15resolv.c,time.c,_atexit.c: hide 3 locksPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15arc4random.c: replace a commentPeter S. Mazinger
Remove pointer to a dead link. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15stdlib.h, arc4random.c: fix arc4random return type to u_int32_tPeter S. Mazinger
Change uint32_t to u_int32_t and uint8_t to u_int8_t, removing completely the dependency on stdint.h. Based on patch by Timo Teraes <timo.teras@iki.fi>. His comment: This also fixes a major bug that stdlib.h includes stdint.h. Things might go very wrong because stdint.h has conditional defines and if stdlib.h is included before #define's for stdint.h we end up missing things and breaking builds (e.g. openjdk). Signed-off-by: Timo Teraes <timo.teras@iki.fi> Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15arc4random.c: use smallint for rs_initializedPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15arc4random.c: move arc4_getbyte upPeter S. Mazinger
no need for forward declarations Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15stdlib.c: get rid of the compiler workarounds by using strong_alias_untypedPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15make __uClibc_fini() hiddenPeter S. Mazinger
No need for a visible version Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15do not include xlocale.h, it is included by locale.h when neededPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15remove unneeded hiddens for rtime, basename, strtof* and wcstof*Peter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-05drop support for old systems lacking vforkMark Salter
Only really old systems (<=linux-2.0) lack a dedicated vfork system call. The code that is in place to support them is causing issues with newer arches that also don't provide a vfork system call -- instead, they do vfork by calling clone in userspace. If anyone cares about these really old systems, they can submit a patch to make the system work with them while not breaking newer systems. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-03rpmatch: provide out-of-line implementationBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-01-23libc: fix signal handling in system()Richard Braun
When built without NPTL support (or for a sparc target), the system() function doesn't conform to its specification. Namely, it uses signal() to install/save/restore signal handlers, which may break applications using custom handlers installed with sigaction(). In addition, it resets the SIGCHLD handler to SIG_DFL instead of blocking the signal, which may result in "lost" signals if a custom handler was installed. Fix system() by replacing uses of signal() with appropriate calls to sigaction() and sigprocmask(). Signed-off-by: Richard Braun <rbraun@sceen.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-01-15libc: build abort with unwind-info for backtraceBernhard Reutner-Fischer
If backtrace support is turned on, build raise() and abort() with unwind info (fixup 4c9b7f3c21ff21c199e54bfad2fdf3445fa4573d). Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-01-13libc: allow to backtrace out of abort callCarmelo Amoroso
Build raise and abort function with dwarf2 info by using -fasynchronous-unwind-tables to make backtrace() working across a call to abort. A scenario where it could be useful is within a signal handler that wants to dump a backtrace when catching some signal (i.e SIGABRT). Without having abort & raise built with DWARF2 information, it is not possible for the libgcc stack unwinder to walk through the call stack out of the abort/raise function. Impacts in terms of size are really limited Current text data bss dec hex filename 164 0 0 164 a4 ./libpthread/nptl/sysdeps/unix/sysv/linux/raise.os 164 0 0 164 a4 ./libpthread/nptl/sysdeps/unix/sysv/linux/raise.oS 220 24 4 248 f8 ./libc/stdlib/abort.os With (-fasynchronous-unwind-tables) text data bss dec hex filename 216 0 0 216 d8 ./libpthread/nptl/sysdeps/unix/sysv/linux/raise.os 216 0 0 216 d8 ./libpthread/nptl/sysdeps/unix/sysv/linux/raise.oS 280 24 4 308 134 ./libc/stdlib/abort.os Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Acked-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2011-11-07stdlib: add qsort_rBernhard Reutner-Fischer
GNU extension like qsort but takes a 3 parameter comparision function. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2011-09-15Defeat compiler optimization which assumes function addresses are never NULLDenys Vlasenko
From email: A warning for people who can be hit by the same or similar issue: gcc 4.1.2 with -march=i486 here with -Os and even with -O2 or -O is "optimizing away" the check if (_stdio_term) in libc/stdlib/_atexit.c which results in a "call 0" and a segfault at exit if you do not happen to link in stdio. Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2011-05-10__uc_malloc: Fix memory-leak in error pathBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2011-04-11Fix malloc alignmentBernd Schmidt
In commit 3e0a1f388, Richard tried to fix malloc alignments by using alignof (double __attribute_aligned__(sizeof (size_t))). This doesn't work, since attribute_aligned overrides the alignment rather than providing a minimum. On C6X, malloc returns four-byte aligned values rather than the necessary eight-byte alignment. It's simpler to use a comparison and pick the bigger of the two values, so that's what I've done. Signed-off-by: Bernd Schmidt <bernds@codesourcery.com>
2011-03-16memalign: include sys/param.h for MAXBernhard Reutner-Fischer
libc/stdlib/malloc/memalign.c:22:1: warning: "MAX" redefined In file included from ./libpthread/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h:25, from ./include/bits/libc-lock.h:36, from ./include/bits/stdio-lock.h:23, from ./include/bits/uClibc_mutex.h:71, from libc/stdlib/malloc/malloc.h:135, from libc/stdlib/malloc/memalign.c:18: ./include/sys/param.h:75:1: warning: this is the location of the previous definition Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2011-03-10really fix missing __libc_drand48_dataPeter S. Mazinger
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
2011-03-10Revert "missing prototype of __libc_drand48_data fixed"Peter S. Mazinger
This reverts commit e2cea9b9edabe885b9bf2586f9541ffb8fe93f3f. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
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