diff options
Diffstat (limited to 'libc/sysdeps/mach/hurd/ifreq.c')
-rw-r--r-- | libc/sysdeps/mach/hurd/ifreq.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libc/sysdeps/mach/hurd/ifreq.c b/libc/sysdeps/mach/hurd/ifreq.c new file mode 100644 index 000000000..9da8a6803 --- /dev/null +++ b/libc/sysdeps/mach/hurd/ifreq.c @@ -0,0 +1,65 @@ +/* Fetch the host's network interface list. Hurd version. + Copyright (C) 2002,2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <ifreq.h> +#include <hurd.h> +#include <hurd/pfinet.h> +#include <sys/mman.h> + + +void +__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd) +{ + file_t server; + + server = _hurd_socket_server (PF_INET, 0); + if (server == MACH_PORT_NULL) + { + out: + *num_ifs = 0; + *ifreqs = NULL; + } + else + { + char *data = NULL; + size_t len = 0; + error_t err = __pfinet_siocgifconf (server, -1, &data, &len); + if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED) + { + /* On the first use of the socket server during the operation, + allow for the old server port dying. */ + server = _hurd_socket_server (PF_INET, 1); + if (server == MACH_PORT_NULL) + goto out; + err = __pfinet_siocgifconf (server, -1, (data_t *) ifreqs, &len); + } + if (err) + goto out; + + if (len % sizeof (struct ifreq) != 0) + { + munmap (data, len); + errno = EGRATUITOUS; + goto out; + } + *num_ifs = len / sizeof (struct ifreq); + *ifreqs = (struct ifreq *) data; + } + +} |