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2012-06-10eventfd: Implement eventfd2 and fix eventfdKhem Raj
eventfd: evntfd assumes to take two arguments instead it should be one evntfd expects two therefore implement both syscalls with correct parameters Thanks Eugene Rudoy for reporting it and also providing the patch Signed-off-by: Khem Raj <raj.khem@gmail.com>
2012-06-06MIPS: Use $a0 instead of $v0 for __syscall_error() argumentKevin Cernekee
$a0 is saved across _dl_runtime_resolve(); $v0 is not. Unfortunately, __syscall_error() uses $v0 for its argument, not $a0 as is the MIPS ABI standard. This means that if lazy binding was used for __syscall_error(), the errno value in $v0 could get corrupted. The problem can be easily seen in testcases where syscalls in librt fail; when librt tries to call __syscall_error() in libc, the argument gets lost and errno gets set to a bogus value: # ./tst-mqueue1 ; echo $? mq_receive on O_WRONLY mqd_t did not fail with EBADF: Unknown error 2004684208 1 # ./tst-mqueue2 ; echo $? mq_timedreceive with too small msg_len did not fail with EMSGSIZE: Unknown error 1997360560 1 # ./tst-mqueue4 ; echo $? mq_timedsend did not fail with ETIMEDOUT: Unknown error 2008747440 1 When _dl_runtime_resolve() was taken out of the equation, the same test cases passed: # LD_BIND_NOW=y ./tst-mqueue1 ; echo $? 0 # LD_BIND_NOW=y ./tst-mqueue2 ; echo $? 0 # LD_BIND_NOW=y ./tst-mqueue4 ; echo $? 0 Changing __syscall_error() to look at $a0 instead of $v0 fixed the problem. (Note that there is also a "__syscall_error.c" file which presumably uses the standard C calling conventions, but I do not think it is used on MIPS.) Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-06MIPS: Convert __syscall_error() callers to use $a0 for argumentKevin Cernekee
Some callers passed the first argument in $v0, while others used $a0. Change the callers to use $a0 consistently. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-06ldso: preload standard path library with setuid bit setFilippo Arcidiacono
For set-user-ID/set-group-ID ELF binaries, only libraries in the standard search directories that are also set-user-ID must be loaded. This patch fixes existing logic according to the above statement. Furthermore if either library setuid bit isn't set or it cannot be found in the standard search path, the library won't be preloaded but execution go ahead with default one. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-06Clean up DSBT supportMark Salter
The existing DSBT support relies on the kernel to provide DSBT info as part of the load maps passed to user space. The problem with this approach is that the DSBT info is in the dynamic section, so the kernel must access a userspace mapping of the dynamic section (or separately read a copy for the kernel) in order to retrieve the information needed by userspace. This patch reworks the DSBT support to remove the reliance on DSBT info coming from the kernel. Instead, ldso reads the info itself from the dynamic section. One other benefit of this is that it allows the existing kernel FDPIC loader to also load DSBT binaries. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-30pread/pwrite: drop fallback funcsMike Frysinger
Linux has provided these functions since the 2.1.x era, so no need to keep these around. We'd rather find out when things are missing (and fix that) than fall back to the unsafe hacks. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-30pread/pwrite: handle renamed syscalls in common/ppc/xtensa codeMike Frysinger
Some arches got this fix, but many did not. So copy the ifdef logic to the ones that missed it to fix behavior in linux-2.6+. URL: https://bugs.busybox.net/show_bug.cgi?id=5258 Reported-by: David Laight <david.laight@aculab.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-21Makerules: Remove duplicated slashes in interp.cSedat Dilek
Peter Mazinger says in [1]: "I can revert it to the old behaviour in master (the change s://:/: should stay though)." [1] http://lists.uclibc.org/pipermail/uclibc/2011-March/045049.html Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-21Revert "Makerules: respect HARDWIRED_ABSPATH in interp.c"Sedat Dilek
This reverts commit 5dffed7dd1a413f3965af702fa7ecd79809d1988. This breaks ldd when HARDWIRED_ABSPATH=n. [1] http://lists.uclibc.org/pipermail/uclibc/2011-March/045048.html From: Timo Teräs <timo.teras@iki.fi> Your commit 5dffed7dd1a413f3965af702fa7ecd79809d1988 removed absolute path from the interpreter binary name embedded in ELF files. This makes ldd seg.fault as it seems to assume absolute paths. gdb sayeth: (gdb) where #0 0x00111ae3 in find_elf_interpreter (ehdr=0xb7a74000) at ../utils/ldd.c:556 #1 0x00111f2a in find_dependencies (filename=0x114910 "/home/fabled/aports/main/libc0.9.32/src/uClibc-0.9.32-rc3/lib/librt.so.0.9.32") at ../utils/ldd.c:676 #2 0x0011228e in main (argc=1, argv=0xbffff6e8) at ../utils/ldd.c:777 (gdb) p tmp tmp = NULL (gdb) p interp_dir $1 = 0x116660 "ld-uClibc.so.0.9.32" [2] http://lists.uclibc.org/pipermail/uclibc/2011-March/045054.html From: Mike Frysinger <vapier@gentoo.org> On Wed, Mar 23, 2011 at 7:18 AM, Peter Mazinger wrote: >> Your commit 5dffed7dd1a413f3965af702fa7ecd79809d1988 removed absolute >> path from the interpreter binary name embedded in ELF files. > > do you consider my patch wrong? yes. the absolute path to the ldso must be encoded in binaries. the point of HARDWIRED_ABSPATH is purely for sysroot/non-sysroot toolchain, and the interp path isnt involved with that. are you sure this even works at runtime ? i'm pretty sure the kernel doesnt do any path lookups on the interp string. Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-21mmap()->sys_mmap2: do unsigned shift of offsetJames Hogan
Fix the implementation of mmap based on the mmap2 system call, to construct pgoffset from offset with an unsigned shift rather than a signed (off_t) shift. The mmap2 test in the testsuite catches this case by mmap'ing with a large offset (with the sign bit set). The signed shift repeats the sign bit making the page shift way out of range. This is already fixed similarly in mmap64(). Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-21stdio: implement assignment-allocation "m" characterMike Frysinger
The latest POSIX spec introduces a "m" character to allocate buffers for the user when using scanf type functions. This is like the old glibc "a" flag, but now standardized. With packages starting to use these, we need to implement it. for example: char *s; sscanf("foo", "%ms", &s); printf("%s\n", s); free(s); This will automatically allocate storage for "s", read in "foo" to it, and then display it. I'm not terribly familiar with the stdio layer, so this could be wrong. But it seems to work for me. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-18ldso: sh: handle _dl_skip_args in linker startup instead of __uClibc_mainFilippo Arcidiacono
Handle _dl_skip_args in the asm part of the dynamic linker startup, to skip the ldso arguments, so we can keep this symbol hidden as other archs do. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2012-05-15ldd: tweak whitespaceBernhard Reutner-Fischer
Tweak whitespace in preprocessor conditionals. No obj-code changes. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-09Revert "help: Document CROSS="Bernhard Reutner-Fischer
This reverts commit 5e0dbdb9e5acdcf7dea29335a5db065f48c58766. CROSS is only a compat thing and should not be advertised Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-08ldd.host: Fix compilation for STANDALONE supportBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-08help: Document CROSS=Bernhard Reutner-Fischer
should maybe better read "override CROSS_COMPILE from above" Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-08help: Document BUILD_CFLAGS and BUILD_LDFLAGSBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-08utils: pass in config flags for lddBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-08ldd: silence warning if !LDSO_LDD_SUPPORTBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-05linuxthreads.old: fix build warnings with epoll enabledMike Frysinger
Pull in the epoll header for the epoll structs. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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>
2012-05-05docs: restore crt from old svn treeMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-05-03config: tweak STRICT_HEADERS descriptionBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-03rpmatch: provide out-of-line implementationBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-03rpmatch: make decl parsableBernhard Reutner-Fischer
Mike, it would have been much simpler to just leave the header impl-free Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-02rpmatch: fix previous commit w/C++ compilersMike Frysinger
The throw markings on the inline func trigger errors when building with C++. Since this inline version doesn't throw any exceptions, just drop the markings completely and be done with it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-30rpmatch: simple inline versionMike Frysinger
Since rpmatch will match ^[Yy] and ^[Nn] regardless of locale, this lets us create a simple inline version. Newer procps versions use this function. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-28epoll.h: sync with glibcMike Frysinger
Since glibc has split out arch-specific stuff to bits/epoll.h, we can pull that sanity back into our tree and drop the arch ifdefs. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-26llseek: support __NR_llseek syscallMark Salter
Older kernels use __NR__llseek for a 64-bit lseek syscall. Newer kernels use __NR_llseek. This patch fixes the implementation of lseek64 to use the __NR_llseek syscall if it exists. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-26getpgrp: fix fallback handlingMark Salter
The test for generating a stub for getpgrp was wrong and would result in duplicate symbols when building without __NR_getpgrp, but with __NR_getpgid and __NR_getpid. A closer look at the getpgrp implementation using getpgid showed that getpid was being called to pass the current pid to getpgid. This is unnecessary because passing 0 to getpgid returns the pgid of the current process. This patch cleans up the getpgrp implementation and the stub test. Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-26arm: use PATH_MEM in ioperm()Bernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-26mmap64: Use correct type for offset parameterMike Frysinger
Some arches check the size in INLINE_SYSCALL() and barf if it's too big (i.e. a 64bit value getting truncated to 32bit). Satisfy error-check on ppc32. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-25atomic.h: handle new mips R10K errataBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-24linuxthreads.old: refactor nommu logic a little to avoid mmu warningMike Frysinger
Should be no functional changes; just fixing: libpthread/linuxthreads.old/manager.c: In function 'pthread_free': libpthread/linuxthreads.old/manager.c:707:9: warning: variable 'h_bottom_save' set but not used [-Wunused-but-set-variable] Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-24linuxthreads.old: pass back up saved_errno value in manager initMike Frysinger
This matches the newer linuxthreads code, and fixes the build warning: libpthread/linuxthreads.old/manager.c: In function 'pthread_handle_create': libpthread/linuxthreads.old/manager.c:487:7: warning: variable 'saved_errno' set but not used [-Wunused-but-set-variable] Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-24linuxthreads.old: fix set-but-unused warningMike Frysinger
Move spin_count down to the code block where it's used to fix the warning: libpthread/linuxthreads.old/spinlock.c: In function '__pthread_lock': libpthread/linuxthreads.old/spinlock.c:70:7: warning: variable 'spin_count' set but not used [-Wunused-but-set-variable] Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-24linuxthreads.old: fix typo in pthread_mutex_unlock hidden prototypeMike Frysinger
Reported-by: Tony Wu <tung7970@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-22getconf: include a newline in error messagesMike Frysinger
The normal error() func implicitly appends a newline, so make sure we do the same. Otherwise getconf outputs an error message like so: prompt$ getconf -h Unrecognized variable `-h'prompt$ Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-22linuxthreads.old: only declare __pthread_xxx funcs hidden inside of libpthreadMike Frysinger
These stubs get used in libc as forwarding funcs, so we don't want them labeled as hidden. Otherwise, attempting to use them in other libraries (like libdl) will result in references to symbols that only libpthread provides. Such as: /usr/bin/python2.6: can't resolve symbol '__pthread_mutex_lock' in lib '/lib/libdl.so.0'. This also brings the old code in line with the newer linuxthreads. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-04-18sysconf: use getrlimit to determine ARG_MAXBernhard Reutner-Fischer
getrlimit previously was only called for NPTL (why?), fix that to be used everywhere. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-18config: Fix alphabetical sort order of targetsBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-18ldd: silence warningsBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17locale: avoid segfault freelocale()Bernhard Reutner-Fischer
PR 4964 Eric Nadler writes: It looks to me like the base structure is not fully initialized with 0 (only a subset of the structure is initialized). This later results in a free of base->collate.index2weight in _locale_set_l. This free tries to free uninitialized memory and segfaults. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17test: Ignore various test objects in localeBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17wchar: Fix BOM emitting in iconv_open()Ed W
Fix incorrect output of BOM when converting charactersets by name. Only affective when iconv/locale enabled. Signed-off-by: Ed Wildgoose <lists@wildgooses.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17ipc: eventually use stat64 in ftok()Bernhard Reutner-Fischer
PR 4201 ftok() always used 32bit stat Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17resolv: tiny shrinkage in /etc/hosts handlingBernhard Reutner-Fischer
-4b Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17resolv: remove unused variablesBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17resolv: Fix /etc/hosts for more than MAXALIASES aliasesBernhard Reutner-Fischer
PR networking/4916 Reserve space for the terminating 0 alias and zero out the scratch-buffer so the last entry of the alias list is empty. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-04-17parse_config: tweak indentationBernhard Reutner-Fischer
and shuffle tokens memsetting around. No obj-code changes. Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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