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2004-06-30  Ulrich Drepper  <drepper@redhat.com>

	* include/net/if.h: Handle if_nameindex and if_freenameindex with
	libc_proto_hidden.
	* sysdeps/unix/sysv/linux/netlinkaccess.h: New file.
	* sysdeps/unix/sysv/linux/ifaddrs.c: Export netlink handling functions.
	* sysdeps/unix/sysv/linux/if_index.c (if_nameindex): Implement using
	netlink if possible.  Fall back on ioctl method if necessary.

	* include/unistd.h: Declare __truncate.
	* sysdeps/generic/truncate.c: Also define __truncate.
	* sysdeps/mach/hurd/truncate.c: Likewise.
	* sysdeps/unix/common/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/truncate64.c: Use __truncate, not truncate.
This commit is contained in:
Ulrich Drepper 2004-06-30 07:43:11 +00:00
parent 606135cf62
commit f516442913
12 changed files with 426 additions and 72 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
ChangeLog
View file

@ -1,3 +1,18 @@
2004-06-30 Ulrich Drepper <drepper@redhat.com>
* include/net/if.h: Handle if_nameindex and if_freenameindex with
libc_proto_hidden.
* sysdeps/unix/sysv/linux/netlinkaccess.h: New file.
* sysdeps/unix/sysv/linux/ifaddrs.c: Export netlink handling functions.
* sysdeps/unix/sysv/linux/if_index.c (if_nameindex): Implement using
netlink if possible. Fall back on ioctl method if necessary.
* include/unistd.h: Declare __truncate.
* sysdeps/generic/truncate.c: Also define __truncate.
* sysdeps/mach/hurd/truncate.c: Likewise.
* sysdeps/unix/common/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/truncate64.c: Use __truncate, not truncate.
2004-06-29 Ulrich Drepper <drepper@redhat.com>
* stdio-common/printf-parsemb.c (__parse_one_specmb): Initialize

2
iconv/Makefile
View file

@ -49,7 +49,7 @@ CFLAGS-charmap.c = -DCHARMAP_PATH='"$(i18ndir)/charmaps"' \
CFLAGS-linereader.c = -DNO_TRANSLITERATION
CFLAGS-simple-hash.c = -I../locale
tests = tst-iconv1 tst-iconv2 tst-iconv3
tests = tst-iconv1 tst-iconv2 tst-iconv3 tst-iconv5
distribute = gconv_builtin.h gconv_int.h loop.c skeleton.c iconv_prog.h \
iconv_charmap.c dummy-repertoire.c gconv_charset.h strtab.c \

158
iconv/tst-iconv5.c Normal file
View file

@ -0,0 +1,158 @@
/* Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by GOTO Masanori <gotom@debian.or.jp>, 2004
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 <iconv.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#define SIZE 256 /* enough room for conversion */
#define SAMPLESTR "abc"
struct unalign
{
char str1[1];
char str2[SIZE];
};
struct convcode
{
const char *tocode;
const char *fromcode;
};
/* test builtin transformation */
struct convcode testcode[] = {
{"ASCII", "ASCII"},
{"UTF-8", "ASCII"},
{"UCS-2BE", "ASCII"},
{"UCS-2LE", "ASCII"},
{"UCS-4BE", "ASCII"},
{"UCS-4LE", "ASCII"},
};
int number = (int) sizeof (testcode) / sizeof (struct convcode);
int
convert (const char *tocode, const char *fromcode, char *inbufp,
size_t inbytesleft, char *outbufp, size_t outbytesleft)
{
iconv_t *ic;
size_t outbytes = outbytesleft;
int ret;
ic = iconv_open (tocode, fromcode);
if (ic == (iconv_t *) - 1)
{
printf ("iconv_open failed: from: %s, to: %s: %s",
fromcode, tocode, strerror (errno));
return -1;
}
while (inbytesleft > 0)
{
ret = iconv (ic, &inbufp, &inbytesleft, &outbufp, &outbytes);
if (ret == -1)
{
printf ("iconv failed: from: %s, to: %s: %s",
fromcode, tocode, strerror (errno));
return -1;
}
}
ret = iconv_close (ic);
if (ret == -1)
{
printf ("iconv_close failed: from: %s, to: %s: %s",
fromcode, tocode, strerror (errno));
return -1;
}
return outbytesleft - outbytes;
}
int
test_unalign (struct convcode *codes, char *str, int len)
{
struct unalign *inbufp, *outbufp;
char *inbuf, *outbuf;
size_t inbytesleft, outbytesleft;
int retlen;
/* allocating unaligned buffer for both inbuf and outbuf */
inbufp = (struct unalign *) malloc (sizeof (struct unalign));
if (!inbufp)
{
printf ("no memory available\n");
exit (1);
}
inbuf = inbufp->str2;
outbufp = (struct unalign *) malloc (sizeof (struct unalign));
if (!outbufp)
{
printf ("no memory available\n");
exit (1);
}
outbuf = outbufp->str2;
/* first iconv phase */
memcpy (inbuf, str, len);
inbytesleft = len;
outbytesleft = sizeof (struct unalign);
retlen = convert (codes->tocode, codes->fromcode, inbuf, inbytesleft,
outbuf, outbytesleft);
if (retlen == -1) /* failed */
return 1;
/* second round trip iconv phase */
memcpy (inbuf, outbuf, retlen);
inbytesleft = retlen;
outbytesleft = sizeof (struct unalign);
retlen = convert (codes->fromcode, codes->tocode, inbuf, inbytesleft,
outbuf, outbytesleft);
if (retlen == -1) /* failed */
return 1;
free (inbufp);
free (outbufp);
return 0;
}
int
main (int argc, char *argv[])
{
int i;
int ret = 0;
for (i = 0; i < number; i++)
{
ret = test_unalign (&testcode[i], (char *) SAMPLESTR, sizeof (SAMPLESTR));
if (ret)
break;
printf ("iconv: %s <-> %s: ok\n",
testcode[i].fromcode, testcode[i].tocode);
}
printf ("Succeeded.\n");
return ret;
}

2
include/net/if.h
View file

@ -4,5 +4,7 @@
libc_hidden_proto (if_nametoindex)
libc_hidden_proto (if_indextoname)
libc_hidden_proto (if_nameindex)
libc_hidden_proto (if_freenameindex)
#endif

1
include/unistd.h
View file

@ -130,6 +130,7 @@ extern int __getpagesize (void) __attribute__ ((__const__));
libc_hidden_proto (__getpagesize)
extern int __ftruncate (int __fd, __off_t __length);
extern int __ftruncate64 (int __fd, __off64_t __length);
extern int __truncate (const char *path, __off_t __length);
extern void *__sbrk (intptr_t __delta);
libc_hidden_proto (__sbrk)

5
sysdeps/generic/truncate.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc.
/* Copyright (C) 1991, 1995, 1996, 1997, 2004 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
@ -21,13 +21,14 @@
/* Truncate PATH to LENGTH bytes. */
int
truncate (path, length)
__truncate (path, length)
const char *path;
off_t length;
{
__set_errno (ENOSYS);
return -1;
}
weak_alias (__truncate, truncate)
stub_warning (truncate)
#include <stub-tag.h>

5
sysdeps/mach/hurd/truncate.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1991, 92, 93, 94, 95, 97, 98 Free Software Foundation, Inc.
/* Copyright (C) 1991,92,93,94,95,97,98,2004 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
@ -24,7 +24,7 @@
/* Truncate FILE_NAME to LENGTH bytes. */
int
truncate (file_name, length)
__truncate (file_name, length)
const char *file_name;
off_t length;
{
@ -41,3 +41,4 @@ truncate (file_name, length)
return __hurd_fail (err);
return 0;
}
weak_alias (__truncate, truncate)

2
sysdeps/unix/common/syscalls.list
View file

@ -12,5 +12,5 @@ setregid - setregid i:ii __setregid setregid
setreuid - setreuid i:ii __setreuid setreuid
sigaction - sigaction i:ipp __sigaction sigaction
sys_lstat lxstat lstat i:sp __syscall_lstat
truncate - truncate i:si truncate
truncate - truncate i:si __truncate truncate
vhangup - vhangup i:i vhangup

159
sysdeps/unix/sysv/linux/if_index.c
View file

@ -28,10 +28,11 @@
#include <bits/libc-lock.h>
#include <not-cancel.h>
#include "kernel-features.h"
#include "netlinkaccess.h"
/* Variable to signal whether SIOCGIFCONF is not available. */
#if __ASSUME_SIOCGIFNAME == 0
# if __ASSUME_SIOCGIFNAME == 0
static int old_siocgifconf;
#else
# define old_siocgifconf 0
@ -73,20 +74,18 @@ if_freenameindex (struct if_nameindex *ifn)
struct if_nameindex *ptr = ifn;
while (ptr->if_name || ptr->if_index)
{
if (ptr->if_name)
free (ptr->if_name);
free (ptr->if_name);
++ptr;
}
free (ifn);
}
libc_hidden_def (if_freenameindex)
struct if_nameindex *
if_nameindex (void)
#if __ASSUME_NETLINK_SUPPORT == 0
static struct if_nameindex *
if_nameindex_ioctl (void)
{
#ifndef SIOCGIFINDEX
__set_errno (ENOSYS);
return NULL;
#else
int fd = __opensock ();
struct ifconf ifc;
unsigned int nifs, i;
@ -174,8 +173,147 @@ if_nameindex (void)
close_not_cancel_no_status (fd);
return idx;
}
#endif
static struct if_nameindex *
if_nameindex_netlink (void)
{
struct netlink_handle nh = { 0, 0, 0, NULL, NULL };
struct if_nameindex *idx = NULL;
if (__no_netlink_support || __netlink_open (&nh) < 0)
return NULL;
/* Tell the kernel that we wish to get a list of all
active interfaces. */
if (__netlink_sendreq (&nh, RTM_GETLINK) < 0)
goto exit_close;
/* Collect all data for every interface. */
if (__netlink_receive (&nh) < 0)
goto exit_free;
/* Count the interfaces. */
unsigned int nifs = 0;
for (struct netlink_res *nlp = nh.nlm_list; nlp; nlp = nlp->next)
{
struct nlmsghdr *nlh;
size_t size = nlp->size;
if (nlp->nlh == NULL)
continue;
/* Walk through all entries we got from the kernel and look, which
message type they contain. */
for (nlh = nlp->nlh; NLMSG_OK (nlh, size); nlh = NLMSG_NEXT (nlh, size))
{
/* Check if the message is what we want. */
if ((pid_t) nlh->nlmsg_pid != nh.pid || nlh->nlmsg_seq != nlp->seq)
continue;
if (nlh->nlmsg_type == NLMSG_DONE)
break; /* ok */
if (nlh->nlmsg_type == RTM_NEWLINK)
++nifs;
}
}
idx = malloc ((nifs + 1) * sizeof (struct if_nameindex));
if (idx == NULL)
{
nomem:
__set_errno (ENOBUFS);
goto exit_free;
}
/* Add the interfaces. */
nifs = 0;
for (struct netlink_res *nlp = nh.nlm_list; nlp; nlp = nlp->next)
{
struct nlmsghdr *nlh;
size_t size = nlp->size;
if (nlp->nlh == NULL)
continue;
/* Walk through all entries we got from the kernel and look, which
message type they contain. */
for (nlh = nlp->nlh; NLMSG_OK (nlh, size); nlh = NLMSG_NEXT (nlh, size))
{
/* Check if the message is what we want. */
if ((pid_t) nlh->nlmsg_pid != nh.pid || nlh->nlmsg_seq != nlp->seq)
continue;
if (nlh->nlmsg_type == NLMSG_DONE)
break; /* ok */
if (nlh->nlmsg_type == RTM_NEWLINK)
{
struct ifinfomsg *ifim = (struct ifinfomsg *) NLMSG_DATA (nlh);
struct rtattr *rta = IFLA_RTA (ifim);
size_t rtasize = IFLA_PAYLOAD (nlh);
idx[nifs].if_index = ifim->ifi_index;
while (RTA_OK (rta, rtasize))
{
char *rta_data = RTA_DATA (rta);
size_t rta_payload = RTA_PAYLOAD (rta);
if (rta->rta_type == IFLA_IFNAME)
{
idx[nifs].if_name = __strndup (rta_data, rta_payload);
if (idx[nifs].if_name == NULL)
{
idx[nifs].if_index = 0;
if_freenameindex (idx);
idx = NULL;
goto nomem;
}
break;
}
rta = RTA_NEXT (rta, rtasize);
}
++nifs;
}
}
}
idx[nifs].if_index = 0;
idx[nifs].if_name = NULL;
exit_free:
__netlink_free_handle (&nh);
exit_close:
__netlink_close (&nh);
return idx;
}
struct if_nameindex *
if_nameindex (void)
{
#ifndef SIOCGIFINDEX
__set_errno (ENOSYS);
return NULL;
#else
struct if_nameindex *result = if_nameindex_netlink ();
# if __ASSUME_NETLINK_SUPPORT == 0
if (__no_netlink_support)
result = if_nameindex_ioctl ();
# endif
return result;
#endif
}
libc_hidden_def (if_nameindex)
char *
if_indextoname (unsigned int ifindex, char *ifname)
@ -263,6 +401,7 @@ if_indextoname (unsigned int ifindex, char *ifname)
}
libc_hidden_def (if_indextoname)
#if 0
void
internal_function

83
sysdeps/unix/sysv/linux/ifaddrs.c
View file

@ -1,5 +1,5 @@
/* getifaddrs -- get names and addresses of all network interfaces
Copyright (C) 2003 Free Software Foundation, Inc.
Copyright (C) 2003, 2004 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
@ -32,11 +32,8 @@
#include <time.h>
#include <unistd.h>
#include <asm/types.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include "netlinkaccess.h"
#include "kernel-features.h"
/* We don't know if we have NETLINK support compiled in in our
Kernel, so include the old implementation as fallback. */
@ -46,33 +43,9 @@ int __no_netlink_support attribute_hidden;
# define getifaddrs fallback_getifaddrs
# include "sysdeps/gnu/ifaddrs.c"
# undef getifaddrs
#else
# define __no_netlink_support 0
#endif
struct netlink_res
{
struct netlink_res *next;
struct nlmsghdr *nlh;
size_t size; /* Size of response. */
uint32_t seq; /* sequential number we used. */
};
struct netlink_handle
{
int fd; /* Netlink file descriptor. */
pid_t pid; /* Process ID. */
uint32_t seq; /* The sequence number we use currently. */
struct netlink_res *nlm_list; /* Pointer to list of responses. */
struct netlink_res *end_ptr; /* For faster append of new entries. */
};
/* struct to hold the data for one ifaddrs entry, so we can allocate
everything at once. */
struct ifaddrs_storage
@ -91,8 +64,8 @@ struct ifaddrs_storage
};
static void
free_netlink_handle (struct netlink_handle *h)
void
__netlink_free_handle (struct netlink_handle *h)
{
struct netlink_res *ptr;
int saved_errno = errno;
@ -107,12 +80,12 @@ free_netlink_handle (struct netlink_handle *h)
ptr = tmpptr;
}
errno = saved_errno;
__set_errno (saved_errno);
}
static int
netlink_sendreq (struct netlink_handle *h, int type)
int
__netlink_sendreq (struct netlink_handle *h, int type)
{
struct
{
@ -140,8 +113,8 @@ netlink_sendreq (struct netlink_handle *h, int type)
}
static int
netlink_receive (struct netlink_handle *h)
int
__netlink_receive (struct netlink_handle *h)
{
struct netlink_res *nlm_next;
char buf[4096];
@ -211,8 +184,8 @@ netlink_receive (struct netlink_handle *h)
}
static void
netlink_close (struct netlink_handle *h)
void
__netlink_close (struct netlink_handle *h)
{
/* Don't modify errno. */
INTERNAL_SYSCALL_DECL (err);
@ -221,21 +194,25 @@ netlink_close (struct netlink_handle *h)
/* Open a NETLINK socket. */
static int
netlink_open (struct netlink_handle *h)
int
__netlink_open (struct netlink_handle *h)
{
struct sockaddr_nl nladdr;
h->fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
if (h->fd < 0)
return -1;
goto out;
memset (&nladdr, '\0', sizeof (nladdr));
nladdr.nl_family = AF_NETLINK;
if (__bind (h->fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) < 0)
{
close_and_out:
netlink_close (h);
__netlink_close (h);
out:
#if __ASSUME_NETLINK_SUPPORT == 0
__no_netlink_support = 1;
#endif
return -1;
}
/* Determine the ID the kernel assigned for this netlink connection.
@ -298,12 +275,10 @@ getifaddrs (struct ifaddrs **ifap)
if (ifap)
*ifap = NULL;
if (! __no_netlink_support && netlink_open (&nh) < 0)
if (! __no_netlink_support && __netlink_open (&nh) < 0)
{
#if __ASSUME_NETLINK_SUPPORT == 0
__no_netlink_support = 1;
#else
return -1;
#if __ASSUME_NETLINK_SUPPORT != 0
return -1;
#endif
}
@ -314,13 +289,13 @@ getifaddrs (struct ifaddrs **ifap)
/* Tell the kernel that we wish to get a list of all
active interfaces. */
if (netlink_sendreq (&nh, RTM_GETLINK) < 0)
if (__netlink_sendreq (&nh, RTM_GETLINK) < 0)
{
result = -1;
goto exit_close;
}
/* Collect all data for every interface. */
if (netlink_receive (&nh) < 0)
if (__netlink_receive (&nh) < 0)
{
result = -1;
goto exit_free;
@ -332,9 +307,9 @@ getifaddrs (struct ifaddrs **ifap)
interfaces in the list, we will later always find the
interface before the corresponding addresses. */
++nh.seq;
if (netlink_sendreq (&nh, RTM_GETADDR) < 0
if (__netlink_sendreq (&nh, RTM_GETADDR) < 0
/* Collect all data for every interface. */
|| netlink_receive (&nh) < 0)
|| __netlink_receive (&nh) < 0)
{
result = -1;
goto exit_free;
@ -355,7 +330,7 @@ getifaddrs (struct ifaddrs **ifap)
message type they contain. */
for (nlh = nlp->nlh; NLMSG_OK (nlh, size); nlh = NLMSG_NEXT (nlh, size))
{
/* check if the message is what we want */
/* Check if the message is what we want. */
if ((pid_t) nlh->nlmsg_pid != nh.pid || nlh->nlmsg_seq != nlp->seq)
continue;
@ -791,10 +766,10 @@ getifaddrs (struct ifaddrs **ifap)
*ifap = &ifas[0].ifa;
exit_free:
free_netlink_handle (&nh);
__netlink_free_handle (&nh);
exit_close:
netlink_close (&nh);
__netlink_close (&nh);
return result;
}

62
sysdeps/unix/sysv/linux/netlinkaccess.h Normal file
View file

@ -0,0 +1,62 @@
/* Copyright (C) 2004 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. */
#ifndef _NETLINKACCESS_H
#define _NETLINKACCESS_H 1
#include <asm/types.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include "kernel-features.h"
struct netlink_res
{
struct netlink_res *next;
struct nlmsghdr *nlh;
size_t size; /* Size of response. */
uint32_t seq; /* sequential number we used. */
};
struct netlink_handle
{
int fd; /* Netlink file descriptor. */
pid_t pid; /* Process ID. */
uint32_t seq; /* The sequence number we use currently. */
struct netlink_res *nlm_list; /* Pointer to list of responses. */
struct netlink_res *end_ptr; /* For faster append of new entries. */
};
#if __ASSUME_NETLINK_SUPPORT == 0
extern int __no_netlink_support attribute_hidden;
#else
# define __no_netlink_support 0
#endif
extern int __netlink_open (struct netlink_handle *h);
extern void __netlink_close (struct netlink_handle *h);
extern void __netlink_free_handle (struct netlink_handle *h);
extern int __netlink_sendreq (struct netlink_handle *h, int type);
extern int __netlink_receive (struct netlink_handle *h);
#endif /* netlinkaccess.h */

4
sysdeps/unix/sysv/linux/truncate64.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1997, 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
/* Copyright (C) 1997-2000, 2003, 2004 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
@ -65,7 +65,7 @@ truncate64 (const char *path, off64_t length)
__set_errno (EINVAL);
return -1;
}
return truncate (path, (off_t) length);
return __truncate (path, (off_t) length);
#endif
}