| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | fix undefined strcpy call in inet_ntop•••source and dest arguments for strcpy cannot overlap, so memmove must
be used here. the length is already known from the above loop.
| Rich Felker | 2013-07-25 | 1 | -1/+1 |
| * | make inet_ntop format v4-mapped ipv6 addresses properly•••based on a patch by orc. POSIX actually fails to specify the format of
the ntop conversion; presumably, any output that will correctly
round-trip back via the (well-specified) pton operation is acceptable.
the new behavior is much more convenient than the old, however.
this patch also affects getnameinfo, which is implemented in terms of
inet_ntop and which is the preferred interface for performing this
conversion.
I've also removed some inexplicable cruft (filling the buffer with 'x'
before doing anything) whose origin I was unable to track down.
| Rich Felker | 2013-07-25 | 1 | -8/+14 |
| * | make getaddrinfo with AF_UNSPEC and null host return both IPv4 and v6•••based on a patch by orc, with indexing and flow control cleaned up a
little bit. this code is all going to be replaced at some point in the
near future.
| Rich Felker | 2013-07-24 | 1 | -14/+23 |
| * | fix missing SOCK_CLOEXEC in various functions that use sockets internally | Rich Felker | 2013-07-09 | 4 | -4/+4 |
| * | add stubs for additional legacy ether.h functions•••these would not be expensive to actually implement, but reading
/etc/ethers does not sound like a particularly useful feature, so for
now I'm leaving them as stubs.
| Rich Felker | 2013-07-01 | 1 | -0/+15 |
| * | implement inet_lnaof, inet_netof, and inet_makeaddr•••also move all legacy inet_* functions into a single file to avoid
wasting object file and compile time overhead on them.
the added functions are legacy interfaces for working with classful
ipv4 network addresses. they have no modern usefulness whatsoever, but
some programs unconditionally use them anyway, and they're tiny.
| Rich Felker | 2013-06-25 | 5 | -39/+55 |
| * | add ether_aton[_r] and ether_ntoa[_r] functions•••based on patch by Strake with minor stylistic changes, and combined
into a single file. this patch remained open for a long time due to
some question as to whether ether_aton would be better implemented in
terms of sscanf, and it's time something was committed, so here it is.
| Rich Felker | 2013-06-25 | 1 | -0/+43 |
| * | getifaddrs: implement proper ipv6 netmasks | rofl0r | 2013-04-09 | 1 | -2/+11 |
| * | getifaddrs: remove unused label | rofl0r | 2013-04-06 | 1 | -1/+0 |
| * | getifaddrs: use if_nameindex to enumerate interfaces | rofl0r | 2013-04-05 | 1 | -23/+9 |
| * | getifaddrs: one less indent level | rofl0r | 2013-04-05 | 1 | -30/+28 |
| * | getifaddrs: less malloc | rofl0r | 2013-04-05 | 1 | -55/+52 |
| * | add getifaddrs•••supports ipv4 and ipv6, but not the "extended" usage where
usage statistics and other info are assigned to ifa_data members
of duplicate entries with AF_PACKET family.
| rofl0r | 2013-04-05 | 1 | -0/+191 |
| * | implement dn_skipname (legacy resolver function) | Rich Felker | 2013-04-04 | 1 | -0/+12 |
| * | dynamically allocate storage for gethostby* buffers•••this change shaves ~1k off libc.so bss size, and also avoids hard
errors in the case where the static buffer was not large enough to
hold the result.
this whole framework is really ugly and might should be replaced or at
least heavily overhauled when some changes/factorizations are made to
getaddrinfo internals in the future.
| Rich Felker | 2013-02-02 | 2 | -10/+32 |
| * | fix blank ai_canonname from getaddrinfo for non-CNAMEs | Rich Felker | 2013-02-02 | 1 | -1/+1 |
| * | fix memory leak due to double call to getaddrinfo in gethostbyname* | Rich Felker | 2013-02-02 | 1 | -1/+0 |
| * | fix error returns in gethostby*_r functions•••they're supposed to return an error code rather than using errno.
| Rich Felker | 2013-02-02 | 2 | -17/+10 |
| * | add inet_network (required for wine) | rofl0r | 2012-12-19 | 1 | -0/+11 |
| * | improve SOCK_NONBLOCK/SOCK_CLOEXEC fallback code•••checking for EINVAL should be sufficient, but qemu user emulation
returns EPROTONOSUPPORT in some of the failure cases, and it seems
conceivable that other kernels doing linux-emulation could make the
same mistake. since DNS lookups and other important code might break
if the fallback does not get invoked, be extra careful and check for
either error.
note that it's important NOT to perform the fallback code on other
errors such as resource-exhaustion cases, since the fallback is not
atomic and will lead to file-descriptor leaks in multi-threaded
programs that use exec. the fallback code is only "safe" to run when
the initial failure is caused by the application's choice of
arguments, not the system state.
| Rich Felker | 2012-11-05 | 1 | -1/+2 |
| * | fix some more O_CLOEXEC/SOCK_CLOEXEC issues | Rich Felker | 2012-09-29 | 1 | -3/+1 |
| * | move accept4, dup3, and pipe2 to non-linux-specific locations•••these interfaces have been adopted by the Austin Group for inclusion
in the next version of POSIX.
| Rich Felker | 2012-09-29 | 1 | -0/+9 |
| * | emulate SOCK_CLOEXEC and SOCK_NONBLOCK for old (pre-2.6.27) kernels•••also update syslog to use SOCK_CLOEXEC rather than separate fcntl
step, to make it safe in multithreaded programs that run external
programs.
emulation is not atomic; it could be made atomic by holding a lock on
forking during the operation, but this seems like overkill. my goal is
not to achieve perfect behavior on old kernels (which have plenty of
other imperfect behavior already) but to avoid catastrophic breakage
in (1) syslog, which would give no output on old kernels with the
change to use SOCK_CLOEXEC, and (2) programs built on a new kernel
where configure scripts detected a working SOCK_CLOEXEC, which later
get run on older kernels (they may otherwise fail to work completely).
| Rich Felker | 2012-09-29 | 1 | -1/+14 |
| * | fix getaddrinfo to accept port 0 (zero)•••new behavior can be summarized as:
inputs that parse completely as a decimal number are treated as one,
and rejected only if the result is out of 16-bit range.
inputs that do not parse as a decimal number (where strtoul leaves
anything left over in the input) are searched in /etc/services.
| Rich Felker | 2012-09-22 | 1 | -2/+2 |
| * | use restrict everywhere it's required by c99 and/or posix 2008•••to deal with the fact that the public headers may be used with pre-c99
compilers, __restrict is used in place of restrict, and defined
appropriately for any supported compiler. we also avoid the form
[restrict] since older versions of gcc rejected it due to a bug in the
original c99 standard, and instead use the form *restrict.
| Rich Felker | 2012-09-06 | 9 | -11/+11 |
| * | remove scanf dependency from getaddrinfo /etc/services support | Rich Felker | 2012-07-22 | 1 | -5/+4 |
| * | getaddrinfo /etc/services lookup support | Rich Felker | 2012-07-22 | 1 | -3/+16 |
| * | make getservby*_r return error code rather than -1 (and using errno)•••untested but should be correct..
| Rich Felker | 2012-07-22 | 2 | -19/+35 |
| * | fix logic error for skipping failed interfaces in if_nameindex | Rich Felker | 2012-07-21 | 1 | -8/+7 |
| * | fix getservby*() with null pointer for protocol argument•••not sure this is the best fix but it should work
| Rich Felker | 2012-07-14 | 2 | -0/+8 |
| * | workaround another sendmsg kernel bug on 64-bit machines•••the kernel wrongly expects the cmsg length field to be size_t instead
of socklen_t. in order to work around the issue, we have to impose a
length limit and copy to a local buffer. the length limit should be
more than sufficient for any real-world use; these headers are only
used for passing file descriptors and permissions between processes
over unix sockets.
| Rich Felker | 2012-07-12 | 1 | -0/+13 |
| * | fix misplaced semicolon in preprocessor directive (#undef h_errno) | Rich Felker | 2012-05-16 | 1 | -1/+1 |
| * | use __h_errno_location for h_errno•••we do not bother making h_errno thread-local since the only interfaces
that use it are inherently non-thread-safe. but still use the
potentially-thread-local ABI to access it just to avoid lock-in.
| Rich Felker | 2012-05-12 | 2 | -0/+9 |
| * | improve name lookup performance in corner cases•••the buffer in getaddrinfo really only matters when /etc/hosts is huge,
but in that case, the huge number of syscalls resulting from a tiny
buffer would seriously impact the performance of every name lookup.
the buffer in __dns.c has also been enlarged a bit so that typical
resolv.conf files will fit fully in the buffer. there's no need to
make it so large as to dominate the syscall overhead for large files,
because resolv.conf should never be large.
| Rich Felker | 2012-04-01 | 2 | -2/+2 |
| * | fix for previous incorrect fix of cancellation in dns lookups•••uninitialized file descriptor was being closed on return, causing
stdin to be closed in many cases.
| Rich Felker | 2012-02-23 | 1 | -3/+4 |
| * | fix default nameserver when resolv.conf doesn't exist | Rich Felker | 2012-02-11 | 1 | -1/+2 |
| * | fix illegal goto out of cleanup context in dns lookups | Rich Felker | 2012-02-11 | 1 | -3/+3 |
| * | make dns lookups (and thus getaddrinfo) cancellable | Rich Felker | 2011-09-21 | 1 | -4/+11 |
| * | use poll rather than select in dns lookups (also clock_gettime)•••if the file descriptor resource limit has been increased past
FD_SETSIZE, this is actually a security issue; we could write past the
end of the fd_set object. using poll makes it a non-issue, and
simplifies the code at the same time.
also, use clock_gettime instead of gettimeofday, for reduced bloat
and better entropy.
| Rich Felker | 2011-09-21 | 1 | -12/+10 |
| * | remove some stray trailing space characters | Rich Felker | 2011-09-13 | 2 | -2/+2 |
| * | implement if_nameindex and if_freenameindex | Rich Felker | 2011-08-03 | 2 | -0/+65 |
| * | fix wrong messages in gai_strerror•••i had missed the fact that a couple values were unassigned...
| Rich Felker | 2011-08-01 | 1 | -0/+2 |
| * | port numbers should always be interpreted as decimal•••per POSIX and RFC 3493:
If the specified address family is AF_INET, AF_INET6, or AF_UNSPEC,
the service can be specified as a string specifying a decimal port
number.
021 is a valid decimal number, therefore, interpreting it as octal
seems to be non-conformant.
| Rich Felker | 2011-08-01 | 1 | -1/+1 |
| * | "implement" getnetbyaddr and getnetbyname•••these are useless legacy functions but some old software contains
cruft that expects them to exist...
| Rich Felker | 2011-07-12 | 1 | -0/+12 |
| * | res_search symbol, aliased to res_query for now (better than nothing) | Rich Felker | 2011-06-30 | 1 | -0/+3 |
| * | fix bug in ipv6 parsing that prevented parsing a lone "::" | Rich Felker | 2011-04-25 | 1 | -4/+1 |
| * | ipv6 parsing code (formerly dummied-out) | Rich Felker | 2011-04-25 | 2 | -8/+62 |
| * | fix bogus return values for inet_pton | Rich Felker | 2011-04-21 | 1 | -2/+2 |
| * | disallow blank strings as service or host name | Rich Felker | 2011-04-20 | 1 | -0/+3 |
| * | fix bugs in ipv4 parsing | Rich Felker | 2011-04-20 | 1 | -1/+2 |
