glibc/inet/ifaddrs.c

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/* getifaddrs -- get names and addresses of all network interfaces
Copyright (C) 2002-2015 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 <ifaddrs.h>
#include <errno.h>
#include <stdlib.h>
/* Create a linked list of `struct ifaddrs' structures, one for each
network interface on the host machine. If successful, store the
list in *IFAP and return 0. On errors, return -1 and set `errno'. */
int
Fix getifaddrs, freeifaddrs namespace (bug 17668). Various objects in glibc bring in ifaddrs.o (via references to __netlink_*) and thereby getifaddrs and freeifaddrs, which are not part of any standard supported by glibc. These should be weak aliases of __getifaddrs and __freeifaddrs; this patch makes them so. (The path by which these functions are brought in is Linux-specific, but it seems less confusing to make all versions of these functions weak aliases rather than only the Linux-specific versions that definitely need it.) Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). [BZ #17668] * inet/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/gnu/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * conform/Makefile (test-xfail-XOPEN2K/net/if.h/linknamespace): Remove variable. (test-xfail-POSIX2008/net/if.h/linknamespace): Likewise. (test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
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__getifaddrs (struct ifaddrs **ifap)
{
__set_errno (ENOSYS);
return -1;
}
Fix getifaddrs, freeifaddrs namespace (bug 17668). Various objects in glibc bring in ifaddrs.o (via references to __netlink_*) and thereby getifaddrs and freeifaddrs, which are not part of any standard supported by glibc. These should be weak aliases of __getifaddrs and __freeifaddrs; this patch makes them so. (The path by which these functions are brought in is Linux-specific, but it seems less confusing to make all versions of these functions weak aliases rather than only the Linux-specific versions that definitely need it.) Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). [BZ #17668] * inet/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/gnu/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * conform/Makefile (test-xfail-XOPEN2K/net/if.h/linknamespace): Remove variable. (test-xfail-POSIX2008/net/if.h/linknamespace): Likewise. (test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
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weak_alias (__getifaddrs, getifaddrs)
libc_hidden_weak (getifaddrs)
stub_warning (getifaddrs)
void
Fix getifaddrs, freeifaddrs namespace (bug 17668). Various objects in glibc bring in ifaddrs.o (via references to __netlink_*) and thereby getifaddrs and freeifaddrs, which are not part of any standard supported by glibc. These should be weak aliases of __getifaddrs and __freeifaddrs; this patch makes them so. (The path by which these functions are brought in is Linux-specific, but it seems less confusing to make all versions of these functions weak aliases rather than only the Linux-specific versions that definitely need it.) Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). [BZ #17668] * inet/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/gnu/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * conform/Makefile (test-xfail-XOPEN2K/net/if.h/linknamespace): Remove variable. (test-xfail-POSIX2008/net/if.h/linknamespace): Likewise. (test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
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__freeifaddrs (struct ifaddrs *ifa)
{
if (ifa == NULL)
return; /* a la free, why not? */
/* Can't be called properly if getifaddrs never succeeded. */
abort ();
}
Fix getifaddrs, freeifaddrs namespace (bug 17668). Various objects in glibc bring in ifaddrs.o (via references to __netlink_*) and thereby getifaddrs and freeifaddrs, which are not part of any standard supported by glibc. These should be weak aliases of __getifaddrs and __freeifaddrs; this patch makes them so. (The path by which these functions are brought in is Linux-specific, but it seems less confusing to make all versions of these functions weak aliases rather than only the Linux-specific versions that definitely need it.) Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by this patch). [BZ #17668] * inet/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/gnu/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs): Rename to __getifaddrs and define as weak alias of __getifaddrs. Use libc_hidden_weak. (freeifaddrs): Rename to __freeifaddrs and define as weak alias of __freeifaddrs. Use libc_hidden_weak. * conform/Makefile (test-xfail-XOPEN2K/net/if.h/linknamespace): Remove variable. (test-xfail-POSIX2008/net/if.h/linknamespace): Likewise. (test-xfail-XOPEN2K8/net/if.h/linknamespace): Likewise.
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weak_alias (__freeifaddrs, freeifaddrs)
libc_hidden_weak (freeifaddrs)
stub_warning (freeifaddrs)