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rofl0r [Tue, 7 Jan 2014 21:43:34 +0000 (22:43 +0100)]
import vanilla x86_64 code as x32
rofl0r [Sat, 11 Jan 2014 12:41:50 +0000 (13:41 +0100)]
sys/shm.h: move arch specific structs to bits/
rofl0r [Tue, 7 Jan 2014 23:04:29 +0000 (00:04 +0100)]
sys/sem.h: cheat and make all longs use time_t instead
most of the members should be time_t anyway, and time_t has the
correct semantics for "syscall_long", so it works on all archs, even x32.
rofl0r [Tue, 7 Jan 2014 23:26:34 +0000 (00:26 +0100)]
use syscall_arg_t type for syscall prototypes in pthread code
rofl0r [Tue, 7 Jan 2014 15:49:23 +0000 (16:49 +0100)]
internal/syscall.h: add syscall_arg_t macro
some 32-on-64 archs require that the actual syscall args be long long.
in that case syscall_arch.h can define syscall_arg_t to whatever it needs
and syscall.h picks it up.
all other archs just use long as usual.
rofl0r [Tue, 7 Jan 2014 02:31:34 +0000 (03:31 +0100)]
internal/syscall.h: use a macro for the syscall args casts
this allows syscall_arch.h to define the macro __scc if special
casting is needed, as is the case for x32, where the actual syscall
arguments are 64bit, but, in case of pointers, would get sign-extended
and thus become invalid.
Rich Felker [Sat, 22 Feb 2014 03:25:26 +0000 (22:25 -0500)]
add fallback emulation for accept4 on old kernels
the other atomic FD_CLOEXEC interfaces (dup3, pipe2, socket) already
had such emulation in place. the justification for doing the emulation
here is the same as for the other functions: it allows applications to
simply use accept4 rather than having to have their own fallback code
for ENOSYS/EINVAL (which one you get is arch-specific!) and there is
no reasonable way an application could benefit from knowing the
operation is emulated/non-atomic since there is no workaround at the
application level for non-atomicity (that is the whole reason these
interfaces were added).
Rich Felker [Tue, 18 Feb 2014 16:04:15 +0000 (11:04 -0500)]
add flock64 alias for (struct) flock in fcntl.h
this was a missing part of the LFS64 API; it's "needed" for use with
fcntl and the corresponding lock commands.
Rich Felker [Thu, 13 Feb 2014 17:27:40 +0000 (12:27 -0500)]
add ipv6 and icmpv6 to getprotoent-family functions
based on patch by orc.
Rich Felker [Thu, 13 Feb 2014 17:24:40 +0000 (12:24 -0500)]
fix typo in table for getprotoent that caused out-of-bound reads
this was unlikely to lead to any crash or dangerous behavior, but
caused adjacent string constants to be treated as part of the
protocols table, possibly returning nonsensical results for unknown
protocol names/numbers or when getprotoent was called in a loop to
enumerate all protocols.
Rich Felker [Wed, 12 Feb 2014 06:03:07 +0000 (01:03 -0500)]
make posix_spawn accept null pid pointer arguments
this is a requirement in the specification that was overlooked.
Szabolcs Nagy [Tue, 11 Feb 2014 17:02:06 +0000 (18:02 +0100)]
add parens when bit and arith ops are mixed in macros in public headers
another commit to silence gcc warnings (-Wparentheses) for standard headers.
changed macros: LOG_UPTO, IN6_ARE_ADDR_EQUAL
Szabolcs Nagy [Tue, 11 Feb 2014 09:51:16 +0000 (10:51 +0100)]
fix signed and unsigned comparision in macros in public headers
gcc -Wsign-compare warns about expanded macros that were defined in
standard headers (before gcc 4.8) which can make builds fail that
use -Werror. changed macros: WIFSIGNALED, __CPU_op_S
Bobby Bingham [Fri, 7 Feb 2014 04:11:22 +0000 (22:11 -0600)]
clone: make clone a wrapper around __clone
The architecture-specific assembly versions of clone did not set errno on
failure, which is inconsistent with glibc. __clone still returns the error
via its return value, and clone is now a wrapper that sets errno as needed.
The public clone has also been moved to src/linux, as it's not directly
related to the pthreads API.
__clone is called by pthread_create, which does not report errors via
errno. Though not strictly necessary, it's nice to avoid clobbering errno
here.
Szabolcs Nagy [Sun, 9 Feb 2014 17:39:53 +0000 (18:39 +0100)]
fix fesetenv(FE_DFL_ENV) on x86_64 (see previous commit)
Szabolcs Nagy [Sun, 9 Feb 2014 17:19:03 +0000 (18:19 +0100)]
fix fesetenv(FE_DFL_ENV) on i386
the default fenv was not set up properly, in particular the
tag word that indicates the contents of the x87 registers was
set to 0 (used) instead of 0xffff (empty)
this could cause random crashes after setting the default fenv
because it corrupted the fpu stack and then any float computation
gives NaN result breaking the program logic (usually after a
float to integer conversion).
Rich Felker [Fri, 7 Feb 2014 06:16:53 +0000 (01:16 -0500)]
in fdopen, avoid setting O_APPEND flag if it's already set
this saves a syscall in the case where the underlying open already
took place with O_APPEND, which is common because fopen with append
modes sets O_APPEND at the time of open before passing the file
descriptor to __fdopen.
Rich Felker [Fri, 7 Feb 2014 05:57:50 +0000 (00:57 -0500)]
fix ftello result for append streams with unflushed output
when there is unflushed output, ftello (and ftell) compute the logical
stream position as the underlying file descriptor's offset plus an
adjustment for the amount of buffered data. however, this can give the
wrong result for append-mode streams where the unflushed writes should
adjust the logical position to be at the end of the file, as if a seek
to end-of-file takes place before the write.
the solution turns out to be a simple trick: when ftello (indirectly)
calls lseek to determine the current file offset, use SEEK_END instead
of SEEK_CUR if the stream is append-mode and there's unwritten
buffered data.
the ISO C rules regarding switching between reading and writing for a
stream opened in an update mode, along with the POSIX rules regarding
switching "active handles", conveniently leave undefined the
hypothetical usage cases where this fix might lead to observably
incorrect offsets.
the bug being fixed was discovered via the test case for glibc issue
Rich Felker [Wed, 5 Feb 2014 22:25:39 +0000 (17:25 -0500)]
reduce namespace pollution in netinet/udp.h
the affected part of the header is responsible for providing both GNU
and BSD versions of the udphdr structure. previously, the
namespace-polluting GNU names were always used for the actual struct
members, and the BSD names, which are named in a manner resembling a
sane namespace, were always macros defined to expand to the GNU names.
now, unless _GNU_SOURCE is defined, the BSD names are used as the
actual structure members, and the macros and GNU names only come into
play when the application requests them.
Rich Felker [Wed, 5 Feb 2014 22:22:26 +0000 (17:22 -0500)]
fix use of legacy u_intN_t types in netinet/tcp.h
policy is to avoid using these types except where they are needed for
namespace conformance. C99-style stdint.h types should be used
instead.
Rich Felker [Wed, 5 Feb 2014 21:55:30 +0000 (16:55 -0500)]
add support for BSD struct tcphdr in netinet/tcp.h
there are two versions of this structure: the BSD version and the GNU
version. previously only the GNU version was supported. the only way
to support both simultaneously is with an anonymous union, which was a
nonstandard extension prior to C11, so some effort is made to avoid
breakage with compilers which do not support anonymous unions.
this commit is based on a patch by Timo Teräs, but with some changes.
in particular, the GNU version of the structure is not exposed unless
_GNU_SOURCE is defined; this both avoids namespace pollution and
dependency on anonymous unions in the default feature profile.
Rich Felker [Wed, 5 Feb 2014 21:34:23 +0000 (16:34 -0500)]
add nonstandard timespec/timeval conversion macros in sys/time.h
these are poorly designed (illogical argument order) and even poorly
implemented (brace issues) on glibc, but unfortunately some software
is using them. we could consider removing them again in the future at
some point if they're documented as deprecated, but for now the
simplest thing to do is just to provide them under _GNU_SOURCE.
Timo Teräs [Mon, 13 Jan 2014 11:36:03 +0000 (13:36 +0200)]
add NO_ADDRESS macro to netdb.h as an alias for NO_DATA
some applications expect it to be defined, despite the standard making
it impossible for it to ever be returned as a value distinct from
NO_DATA. since these macros are outside the scope of the current
standards, no special effort is made to hide NO_ADDRESS under
conditions where the others are exposed.
Timo Teräs [Mon, 13 Jan 2014 11:05:14 +0000 (13:05 +0200)]
add legacy functions setkey() and encrypt()
Rich Felker [Sat, 1 Feb 2014 19:33:33 +0000 (14:33 -0500)]
fix nftw FTW_MOUNT flag
the incorrect check for crossing device boundaries was preventing nftw
from traversing anything except the initially provided pathname.
Szabolcs Nagy [Thu, 23 Jan 2014 02:24:54 +0000 (03:24 +0100)]
fix an overflow in wcsxfrm when n==0
posix allows zero length destination
Rich Felker [Tue, 21 Jan 2014 06:06:42 +0000 (01:06 -0500)]
add version.h to .gitignore; it is a generated file
Rich Felker [Tue, 21 Jan 2014 05:36:35 +0000 (00:36 -0500)]
fix crash in dynamic linker when certain copy relocations are unsatisfied
STB_WEAK is only a weak reference for undefined symbols (those with a
section of SHN_UNDEF). otherwise, it's a weak definition. normally
this distinction would not matter, since a relocation referencing a
symbol that also provides a definition (not SHN_UNDEF) will always
succeed in finding the referenced symbol itself. however, in the case
of copy relocations, the referenced symbol itself is ignored in order
to search for another symbol to copy from, and thus it's possible that
no definition is found. in this case, if the symbol being resolved
happened to be a weak definition, it was misinterpreted as a weak
reference, suppressing the error path and causing a crash when the
copy relocation was performed with a null source pointer passed to
memcpy.
there are almost certainly still situations in which invalid
combinations of symbol and relocation types can cause the dynamic
linker to crash (this is pretty much inevitable), but the intent is
that crashes not be possible for symbol/relocation tables produced by
a valid linker.
Szabolcs Nagy [Tue, 21 Jan 2014 01:01:35 +0000 (02:01 +0100)]
fix initstate to make the state buffer usable in setstate
setstate could use the results of previous initstate or setstate
calls (they return the old state buffer), but the documentation
requires that an initialized state buffer should be possible to
use in setstate immediately, which means that initstate should
save the generator parameters in it.
I also removed the copyright notice since it is present in the
copyright file.
Rich Felker [Thu, 16 Jan 2014 03:29:13 +0000 (22:29 -0500)]
fix system breakage window during make install due to permissions
install.sh was wrongly waiting until after atomically replacing the
old file to set the correct permissions on the new file. in the case
of the dynamic linker, this would cause a dynamic-linked chmod command
not to run (due to missing executable permissions on the dynamic
linker) and thus leave the system in an unusable state.
even if chmod is static-linked, the old behavior had a race window
where dynamic-linked programs could fail to run.
Rich Felker [Thu, 16 Jan 2014 02:48:44 +0000 (21:48 -0500)]
remove more unnecessary operand-size suffixes from x86_64 atomic.h
Rich Felker [Sun, 12 Jan 2014 00:37:09 +0000 (19:37 -0500)]
remove gratuitous temp vars, casts, and suffixes in x86_64 atomic.h
aside from general cleanup, this should allow the identical atomic.h
file to be used for the upcoming x32 port.
Rich Felker [Sat, 11 Jan 2014 16:23:10 +0000 (11:23 -0500)]
remove size suffix in x86_64 __pthread_self asm
the operand size is unnecessary, since the assembler knows it from the
destination register size. removing the suffix makes it so the same
code should work for x32.
Rich Felker [Sat, 11 Jan 2014 16:20:01 +0000 (11:20 -0500)]
make type of st_dev explicitly dev_t in x86_64 stat.h
otherwise it's unclear that it's correct. aside from that, it makes
for a gratuitous difference between the x86_64 header and the upcoming
x32 header.
Rich Felker [Thu, 9 Jan 2014 00:39:18 +0000 (19:39 -0500)]
fix namespace violation in sys/shm.h
in fixing this, I've changed the logic from ugly #if/#else blocks
inside the struct shm_info definition to a fixed struct definition and
optional macros to rename the elements. this will be helpful if we
need to move shm_info to a bits header in the future, as it will keep
the feature test logic out of bits.
Rich Felker [Thu, 9 Jan 2014 00:36:29 +0000 (19:36 -0500)]
fix namespace violations in utmpx.h
Rich Felker [Thu, 9 Jan 2014 00:27:56 +0000 (19:27 -0500)]
add IUTF8 to termios.h on archs that were missing it
Rich Felker [Thu, 9 Jan 2014 00:20:55 +0000 (19:20 -0500)]
fix namespace violations in termios.h, at least mostly
the fix should be complete on archs that use the generic definitions
(i386, arm, x86_64, microblaze), but mips and powerpc have not been
checked thoroughly and may need more fixes.
Rich Felker [Wed, 8 Jan 2014 23:54:33 +0000 (18:54 -0500)]
fix remaining known namespace violations for netinet/in.h
the imr_, imsf_, ip6_, ip6m_, ipi_, ipi6_, SCM_, and SOL_ prefixes are
not in the reserved namespace for this header. thus the constants and
structures using them need to be protected under appropriate feature
test macros.
this also affects some headers which are permitted to include
netinet/in.h, particularly netdb.h and arpa/inet.h.
the SOL_ macros are moved to sys/socket.h where they are in the
reserved namespace (SO*). they are still accessible via netinet/in.h
since it includes sys/socket.h implicitly (which is permitted).
the SCM_SRCRT macro is simply removed, since the definition used for
it, IPV6_RXSRCRT is not defined anywhere. it could be re-added, this
time in sys/socket.h, if the appropriate value can be determined;
however, given that the erroneous definition was not caught, it is
unlikely that any software actually attempts to use SCM_SRCRT.
Rich Felker [Wed, 8 Jan 2014 22:37:05 +0000 (17:37 -0500)]
fix inadvertent use of struct in place of union for semun
Szabolcs Nagy [Wed, 8 Jan 2014 21:52:26 +0000 (22:52 +0100)]
add __isoc99_vfscanf weak alias to vfscanf
this glibc abi compatibility function was missed when the scanf
aliases were added.
Szabolcs Nagy [Wed, 8 Jan 2014 21:51:46 +0000 (22:51 +0100)]
math: add drem and dremf weak aliases to i386 remainder asm
weak_alias was only in the c code, so drem was missing on platforms
where remainder is implemented in asm.
Rich Felker [Wed, 8 Jan 2014 21:12:47 +0000 (16:12 -0500)]
fix type of semctl variadic argument
per POSIX, the variadic argument has type union semun, which may
contain a pointer or int; the type read depends on the command being
issued. this allows the userspace part of the implementation to be
type-correct without requiring special-casing for different commands.
the kernel always expects to receive the argument interpreted as
unsigned long (or equivalently, a pointer), and does its own handling
of extracting the int portion from the representation, as needed.
this change fixes two possible issues: most immediately, reading the
argument as a (signed) long and passing it to the syscall would
perform incorrect sign-extension of pointers on the upcoming x32
target. the other possible issue is that some archs may use different
(user-space) argument-passing convention for unions, preventing va_arg
from correctly obtaining the argument when the type long (or even
unsigned long or void *) is passed to it.
Rich Felker [Wed, 8 Jan 2014 07:18:06 +0000 (02:18 -0500)]
in fcntl, avoid passing pointer arguments to syscalls as longs
really, fcntl should be changed to use the correct type corresponding
to cmd when calling va_arg, and to carry the correct type through
until making the syscall. however, this greatly increases binary size
and does not seem to offer any benefits except formal correctness, so
I'm holding off on that change for now.
the minimal changes made in this patch are in preparation for addition
of the x32 port, where the syscall macros need to know whether their
arguments are pointers or integers in order to properly pass them to
the 64-bit kernel.
Rich Felker [Tue, 7 Jan 2014 08:02:14 +0000 (03:02 -0500)]
fix const-correctness of argument to stime
it's unclear what the historical signature for this function was, but
semantically, the argument should be a pointer to const, and this is
what glibc uses. correct programs should not be using this function
anyway, so it's unlikely to matter.
Rich Felker [Tue, 7 Jan 2014 07:58:28 +0000 (02:58 -0500)]
fix signedness of pgoff argument to remap_file_pages
both the kernel and glibc agree that this argument is unsigned; the
incorrect type ssize_t came from erroneous man pages.
Rich Felker [Tue, 7 Jan 2014 07:50:34 +0000 (02:50 -0500)]
fix const-correctness in sigandset/sigorset arguments
this change is consistent with the corresponding glibc functions and
is semantically const-correct. the incorrect argument types without
const seem to have been taken from erroneous man pages.
Rich Felker [Tue, 7 Jan 2014 07:44:47 +0000 (02:44 -0500)]
remove sys/sysctl.h
this functionality has essentially always been deprecated in linux,
and was never supported by musl. the presence of the header was
reported to cause some software to attempt to use the nonexistant
function, so removing the header is the cleanest solution.
Rich Felker [Tue, 7 Jan 2014 07:41:27 +0000 (02:41 -0500)]
fix incorrect type for wd argument of inotify_rm_watch
this was wrong since the original commit adding inotify, and I don't
see any explanation for it. not even the man pages have it wrong. it
was most likely a copy-and-paste error.
Rich Felker [Tue, 7 Jan 2014 03:17:24 +0000 (22:17 -0500)]
fix argument types for legacy function inet_makeaddr
the type int was taken from seemingly erroneous man pages. glibc uses
in_addr_t (uint32_t), and semantically, the arguments should be
unsigned.
Rich Felker [Tue, 7 Jan 2014 03:05:54 +0000 (22:05 -0500)]
eliminate explicit (long) casts when making syscalls
this practice came from very early, before internal/syscall.h defined
macros that could accept pointer arguments directly and handle them
correctly. aside from being ugly and unnecessary, it looks like it
will be problematic when we add support for 32-bit ABIs on archs where
registers (and syscall arguments) are 64-bit, e.g. x32 and mips n32.
Rich Felker [Tue, 7 Jan 2014 03:03:38 +0000 (22:03 -0500)]
const-qualify the address argument to dladdr
this agrees with implementation practice on glibc and BSD systems, and
is the const-correct way to do things; it eliminates warnings from
passing pointers to const. the prototype without const came from
seemingly erroneous man pages.
Rich Felker [Tue, 7 Jan 2014 02:31:17 +0000 (21:31 -0500)]
add some missing LFS64 aliases for fadvise/fallocate functions
Rich Felker [Fri, 3 Jan 2014 19:33:44 +0000 (14:33 -0500)]
release 0.9.15
rofl0r [Fri, 3 Jan 2014 10:27:46 +0000 (11:27 +0100)]
fanotify.c: fix typo in header inclusion
the header is included only as a guard to check that the declaration
and definition match, so the typo didn't cause any breakage aside
from omitting this check.
Rich Felker [Thu, 2 Jan 2014 22:13:19 +0000 (17:13 -0500)]
disable the brk function
the reasons are the same as for sbrk. unlike sbrk, there is no safe
usage because brk does not return any useful information, so it should
just fail unconditionally.
Rich Felker [Thu, 2 Jan 2014 22:03:34 +0000 (17:03 -0500)]
disable sbrk for all values of increment except 0
use of sbrk is never safe; it conflicts with malloc, and malloc may be
used internally by the implementation basically anywhere. prior to
this change, applications attempting to use sbrk to do their own heap
management simply caused untrackable memory corruption; now, they will
fail with ENOMEM allowing the errors to be fixed.
sbrk(0) is still permitted as a way to get the current brk; some
misguided applications use this as a measurement of their memory
usage or for other related purposes, and such usage is harmless.
eventually sbrk may be re-added if/when malloc is changed to avoid
using the brk by using mmap for all allocations.
rofl0r [Thu, 2 Jan 2014 21:10:45 +0000 (22:10 +0100)]
add fanotify syscall wrapper and header
Timo Teräs [Wed, 25 Dec 2013 11:33:46 +0000 (13:33 +0200)]
fix struct signalfd_siginfo
ssi_ptr is really 64-bit in kernel, so fix that. assuming sizeof(void*)
for it also caused incorrect padding for 32-bits, as the following
64-bits are aligned to 64-bits (and the padding was not taken into
account), so fix the padding as well. add addr_lsb field while there.
Rich Felker [Fri, 20 Dec 2013 16:56:16 +0000 (11:56 -0500)]
implement legacy function herror
based on patch by Timo Teräs; greatly simplified to use fprintf.
Rich Felker [Fri, 20 Dec 2013 16:52:10 +0000 (11:52 -0500)]
add sys/quota.h and quotactl syscall wrapper
based on patch by Timo Teräs.
Rich Felker [Fri, 20 Dec 2013 16:42:03 +0000 (11:42 -0500)]
add netinet/igmp.h and multicast groups to netinet/in.h
based on patch by Timo Teräs.
Timo Teräs [Wed, 18 Dec 2013 11:53:11 +0000 (13:53 +0200)]
add TCP_INFO and TCP_MD5SIG socket option related structures
Rich Felker [Thu, 19 Dec 2013 19:24:55 +0000 (14:24 -0500)]
fix failure of fchmod, fstat, fchdir, and fchown to produce EBADF
the workaround/fallback code for supporting O_PATH file descriptors
when the kernel lacks support for performing these operations on them
caused EBADF to get replaced by ENOENT (due to missing entry in
/proc/self/fd). this is unlikely to affect real-world code (calls that
might yield EBADF are generally unsafe, especially in library code)
but it was breaking some test cases.
the fix I've applied is something of a tradeoff: it adds one syscall
to these operations on kernels where the workaround is needed. the
alternative would be to catch ENOENT from the /proc lookup and
translate it to EBADF, but I want to avoid doing that in the interest
of not touching/depending on /proc at all in these functions as long
as the kernel correctly supports the operations. this is following the
general principle of isolating hacks to code paths that are taken on
broken systems, and keeping the code for correct systems completely
hack-free.
Rich Felker [Thu, 19 Dec 2013 10:05:13 +0000 (05:05 -0500)]
fix hangs in localtime for near-overflowing time_t values on 64-bit archs
Rich Felker [Sun, 15 Dec 2013 00:51:48 +0000 (19:51 -0500)]
fix dynamic linker entry point for microblaze
the ABI allows the callee to clobber stack slots that correspond to
arguments passed in registers, so the caller must adjust the stack
pointer to reserve space appropriately. prior to this fix, the argv
array was possibly clobbered by dynamic linker code before passing
control to the main program.
Rich Felker [Fri, 13 Dec 2013 07:25:09 +0000 (02:25 -0500)]
optimize get_current_dir_name to reduce stack bloat
our getcwd already (as an extension) supports allocation of a buffer
when the buffer argument is a null pointer, so there's no need to
duplicate the allocation logic in this wrapper function. duplicating
it is actually harmful in that it doubles the stack usage from
PATH_MAX to 2*PATH_MAX.
Rich Felker [Fri, 13 Dec 2013 07:20:07 +0000 (02:20 -0500)]
use 0 instead of NULL for null pointer constants
and thereby remove otherwise-unnecessary inclusion of stddef.h
Szabolcs Nagy [Thu, 12 Dec 2013 05:09:18 +0000 (05:09 +0000)]
include cleanups: remove unused headers and add feature test macros
Szabolcs Nagy [Thu, 12 Dec 2013 04:18:34 +0000 (04:18 +0000)]
remove an unnecessary check in inet_pton
at most 4 hexadecimal digits are processed in one field so the
value cannot overflow. the netdb.h header was not used.
Szabolcs Nagy [Thu, 12 Dec 2013 03:42:11 +0000 (03:42 +0000)]
math: define _GNU_SOURCE when implementing non-standard math functions
this makes the prototypes in math.h are visible so they are checked agaist
the function definitions
Rich Felker [Sat, 7 Dec 2013 02:59:01 +0000 (21:59 -0500)]
add posix_close, accepted for inclusion in the next issue of POSIX
this is purely a wrapper for close since Linux does not support EINTR
semantics for the close syscall.
Rich Felker [Wed, 4 Dec 2013 23:00:19 +0000 (18:00 -0500)]
remove dependency of version.h on .git/* to avoid errors
the wildcard function in GNU make includes dangling symlinks; if any
exist under the .git directory, they would get added as dependencies,
causing make to exit with an error due to lacking a rule to build the
missing file.
as far as I can tell, git operations which should force version.h to
be rebuilt must all touch the mtime of the top-level .git directory.
Szabolcs Nagy [Wed, 4 Dec 2013 21:39:52 +0000 (21:39 +0000)]
move struct ucred under _GNU_SOURCE in sys/socket.h for clean posix namespace
Szabolcs Nagy [Wed, 4 Dec 2013 21:38:32 +0000 (21:38 +0000)]
fix SHUT_WR typo in sys/socket.h and duplicate definitions of SHUT_*
Szabolcs Nagy [Wed, 4 Dec 2013 21:31:39 +0000 (21:31 +0000)]
fix res_mkquery and res_send prototypes in resolv.h
historically these functions appeared in BSD 4.3 without prototypes,
then in the bind project prototypes were added to resolv.h, but those
were incompatible with the definitions of the implementation.
the bind resolv.h became the defacto api most systems use now, but the
old internal definitions found their way into the linux manuals and thus
into musl.
Rich Felker [Wed, 4 Dec 2013 01:34:36 +0000 (20:34 -0500)]
remove duplicate definition of _PATH_LASTLOG in paths.h
Rich Felker [Wed, 4 Dec 2013 00:01:40 +0000 (19:01 -0500)]
fix mv usage in install.sh to avoid bogus interactive prompting
Rich Felker [Mon, 2 Dec 2013 07:45:10 +0000 (02:45 -0500)]
workaround clang deficiency affecting thread pointer access on powerpc
based on patch by Richard Pennington, who initially reported the
issue.
Rich Felker [Mon, 2 Dec 2013 07:08:41 +0000 (02:08 -0500)]
implement FNM_LEADING_DIR extension flag in fnmatch
previously this flag was defined and accepted as a no-op, possibly
breaking some software that uses it. given the choice to remove the
definition and possibly break applications that were already working,
or simply implement the feature, the latter turned out to be easy
enough to make the decision easy.
in the case where the FNM_PATHNAME flag is also set, this
implementation is clean and essentially optimal. otherwise, it's an
inefficient "brute force" implementation. at some point, when cleaning
up and refactoring this code, I may add a more direct code path for
handling FNM_LEADING_DIR in the non-FNM_PATHNAME case, but at this
point my main interest is avoiding introducing new bugs in the code
that implements the standard fnmatch features specified by POSIX.
Rich Felker [Mon, 2 Dec 2013 07:06:52 +0000 (02:06 -0500)]
remove now-unnecessary features.h inclusion from fnmatch.h
Rich Felker [Mon, 2 Dec 2013 07:04:58 +0000 (02:04 -0500)]
expose FNM_* extensions in fnmatch.h without _GNU_SOURCE
at least a couple of these are used on BSD too, and the FNM_*
namespace is reserved in fnmatch.h anyway.
Rich Felker [Mon, 2 Dec 2013 04:16:38 +0000 (23:16 -0500)]
fix typos in INSTALL file
Rich Felker [Sun, 1 Dec 2013 22:27:25 +0000 (17:27 -0500)]
add infrastructure to record and report the version of libc.so
this is still experimental and subject to change. for git checkouts,
an attempt is made to record the exact revision to aid in bug reports
and debugging. no version information is recorded in the static libc.a
or binaries it's linked into.
Rich Felker [Sun, 1 Dec 2013 19:36:22 +0000 (14:36 -0500)]
fix fnmatch corner cases related to escaping
the FNM_PATHNAME logic for advancing by /-delimited components was
incorrect when the / character was escaped (i.e. \/), and a final \ at
the end of pattern was not handled correctly.
Szabolcs Nagy [Sun, 1 Dec 2013 17:32:48 +0000 (17:32 +0000)]
fix the end of string matching in fnmatch with FNM_PATHNAME
a '/' in the pattern could be incorrectly matched against the
terminating null byte in the string causing arbitrarily long
sequence of out-of-bounds access in fnmatch("/","",FNM_PATHNAME)
Rich Felker [Sat, 30 Nov 2013 18:33:29 +0000 (13:33 -0500)]
support mix of IPv4 and v6 nameservers in resolv.conf
a v6 socket will only be used if there is at least one v6 nameserver
address. if the kernel lacks v6 support, the code will fall back to
using a v4 socket and requests to v6 servers will silently fail. when
using a v6 socket, v4 addresses are converted to v4-mapped form and
setsockopt is used to ensure that the v6 socket can accept both v4 and
v6 traffic (this is on-by-default on Linux but the default is
configurable in /proc and so it needs to be set explicitly on the
socket level). this scheme avoids increasing resource usage during
lookups and allows the existing network io loop to be used without
modification.
previously, nameservers whose address family did not match the address
family of the first-listed nameserver were simply ignored. prior to
recent __ipparse fixes, they were not ignored but erroneously parsed.
Rich Felker [Fri, 29 Nov 2013 17:45:09 +0000 (12:45 -0500)]
increase TTY_NAME_MAX limit to 32
the old value of 20 was reported by Laurent Bercot as being
insufficient for a reasonable real-world usage case. actual problem
was the internal buffer used by ttyname(), but the implementation of
ttyname uses TTY_NAME_MAX, and for consistency it's best to increase
both. the new value is aligned with glibc.
Rich Felker [Wed, 27 Nov 2013 05:54:03 +0000 (00:54 -0500)]
reject invalid address families in getaddrinfo
subsequent code assumes the address family requested is either
unspecified or one of IPv4/IPv6, and could malfunction if this
constraint is not met, so other address families should be explicitly
rejected.
Rich Felker [Wed, 27 Nov 2013 04:26:37 +0000 (23:26 -0500)]
adjust fallback INFINITY definition for FLT_EVAL_METHOD==2 case
on archs with excess precision, the floating point constant 1e40f may
be evaluated such that it does not actually produce an infinity.
1e5000f is sufficiently large to produce an infinity for all supported
floating point formats. note that this definition of INFINITY is only
used for old or non-GNUC compilers anyway; despite being a portable,
conforming definition, it leads to erroneous warnings on many
compilers and thus using the builtin is preferred.
Rich Felker [Wed, 27 Nov 2013 01:01:21 +0000 (20:01 -0500)]
fix off-by-one length failure in strftime/wcsftime and improve error behavior
these functions were spuriously failing in the case where the buffer
size was exactly the number of bytes/characters to be written,
including null termination. since these functions do not have defined
error conditions other than buffer size, a reasonable application may
fail to check the return value when the format string and buffer size
are known to be valid; such an application could then attempt to use a
non-terminated buffer.
in addition to fixing the bug, I have changed the error handling
behavior so that these functions always null-terminate the output
except in the case where the buffer size is zero, and so that they
always write as many characters as possible before failing, rather
than dropping whole fields that do not fit. this actually simplifies
the logic somewhat anyway.
Szabolcs Nagy [Mon, 25 Nov 2013 23:34:10 +0000 (23:34 +0000)]
remove duplicate includes from dynlink.c, strfmon.c and getaddrinfo.c
Rich Felker [Mon, 25 Nov 2013 02:42:55 +0000 (21:42 -0500)]
restore type of NULL to void * except when used in C++ programs
unfortunately this eliminates the ability of the compiler to diagnose
some dangerous/incorrect usage, but POSIX requires (as an extension to
the C language, i.e. CX shaded) that NULL have type void *. plain C
allows it to be defined as any null pointer constant.
the definition 0L is preserved for C++ rather than reverting to plain
0 to avoid dangerous behavior in non-conforming programs which use
NULL as a variadic sentinel. (it's impossible to use (void *)0 for C++
since C++ lacks the proper implicit pointer conversions, and other
popular alternatives like the GCC __null extension seem non-conforming
to the standard's requirements.)
Michael Forney [Thu, 21 Nov 2013 03:13:41 +0000 (19:13 -0800)]
shadow: Implement fgetspent
Michael Forney [Sun, 24 Nov 2013 06:17:42 +0000 (22:17 -0800)]
shadow: Move spent parsing to internal function
Michael Forney [Sun, 24 Nov 2013 06:33:05 +0000 (22:33 -0800)]
Fix dn_comp prototype and add stub
This function is used by ping6 from iputils.
Michael Forney [Sun, 24 Nov 2013 06:10:10 +0000 (22:10 -0800)]
shadow: Implement putspent
Szabolcs Nagy [Sun, 24 Nov 2013 01:06:38 +0000 (01:06 +0000)]
math: clean up __rem_pio2
- remove the HAVE_EFFICIENT_IRINT case: fn is an exact integer, so
it can be converted to int32_t a bit more efficiently than with a
cast (the rounding mode change can be avoided), but musl does not
support this case on any arch.
- __rem_pio2: use double_t where possible
- __rem_pio2f: use less assignments to avoid stores on i386
- use unsigned int bit manipulation (and union instead of macros)
- use hexfloat literals instead of named constants
Szabolcs Nagy [Sun, 24 Nov 2013 00:34:07 +0000 (00:34 +0000)]
use 0 instead of NULL in headers where NULL is not defined
some macros in sys/mtio.h and syslog.h used NULL without defining it
Szabolcs Nagy [Sat, 23 Nov 2013 23:47:48 +0000 (23:47 +0000)]
add O_TMPFILE flag, new in linux 3.11
definition in linux:
#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
where __O_TMPFILE and O_DIRECTORY are arch specific