diff options
Diffstat (limited to 'inet')
| -rw-r--r-- | inet/Makefile | 4 | ||||
| -rw-r--r-- | inet/getnameinfo.c | 4 | ||||
| -rw-r--r-- | inet/inet_ntoa.c | 74 | ||||
| -rw-r--r-- | inet/netinet/in.h | 6 | ||||
| -rw-r--r-- | inet/test_ifindex.c | 59 |
5 files changed, 100 insertions, 47 deletions
diff --git a/inet/Makefile b/inet/Makefile index 0237d0b..9a70c31 100644 --- a/inet/Makefile +++ b/inet/Makefile @@ -23,7 +23,7 @@ subdir := inet headers := netinet/ether.h netinet/in.h netinet/if_ether.h \ netinet/tcp.h netinet/ip.h $(wildcard arpa/*.h protocols/*.h) \ - aliases.h netinet/ip6.h netinet/icmp6.h netinet/inbits.h + aliases.h netinet/ip6.h netinet/icmp6.h bits/in.h distribute := netgroup.h @@ -46,7 +46,7 @@ routines := htonl htons \ getaliasent_r getaliasent getaliasname getaliasname_r \ in6_addr getnameinfo if_index -tests := htontest +tests := htontest test_ifindex # No warnings about losing BSD code. CFLAGS-rcmd.c = -w diff --git a/inet/getnameinfo.c b/inet/getnameinfo.c index 037578f..e6f4cbf 100644 --- a/inet/getnameinfo.c +++ b/inet/getnameinfo.c @@ -77,7 +77,7 @@ struct hostent *_addr2hostname_hosts (const char *, int, int); #endif /* min */ -static char * +static const char * nrl_domainname (void) { static const char *domain = NULL; @@ -267,7 +267,7 @@ getnameinfo (const struct sockaddr *sa, size_t addrlen, char *host, { if (flags & NI_NOFQDN) { - char *c; + const char *c; if ((c = nrl_domainname ()) && (c = strstr(h->h_name, c)) && (c != h->h_name) && (*(--c) == '.')) { diff --git a/inet/inet_ntoa.c b/inet/inet_ntoa.c index 9e4b2af..5dfec62 100644 --- a/inet/inet_ntoa.c +++ b/inet/inet_ntoa.c @@ -26,60 +26,45 @@ /* The interface of this function is completely stupid, it requires a static buffer. We relax this a bit in that we allow at least one buffer for each thread. */ -__libc_lock_define_initialized (static, lock); /* This is the key for the thread specific memory. */ static __libc_key_t key; +/* If nonzero the key allocation failed and we should better use a + static buffer than fail. */ +static char local_buf[18]; +static char *static_buf; + /* Destructor for the thread-specific data. */ +static void init (void); static void free_key_mem (void *mem); char * inet_ntoa (struct in_addr in) { - static char static_buf[18]; - static int initialized = 0; - char *buffer = NULL; + __libc_once_define (once); + char *buffer; unsigned char *bytes; /* If we have not yet initialized the buffer do it now. */ - if (!initialized) - { - /* Make sure there is only one process doing the initialization. */ - __libc_lock_lock (lock); - - if (!initialized) - { - if (__libc_key_create (&key, free_key_mem)) - /* Creating the key failed. This either means we run - have only a single-threaded application or something - really went wrong. In any case use a static buffer - which is better than nothing. */ - buffer = static_buf; - else - /* We have a key. */ - initialized = 1; - } - - __libc_lock_unlock (lock); - } + __libc_once (once, init); + if (static_buf != NULL) + return static_buf; + + /* We don't use the static buffer and so we have a key. Use it to + get the thread-specific buffer. */ + buffer = __libc_getspecific (key); if (buffer == NULL) { - /* We don't use the static buffer and so we have a key. Use it - to get the thread-specific buffer. */ - buffer = __libc_getspecific (key); + /* No buffer allocated so far. */ + buffer = malloc (18); if (buffer == NULL) - { - /* No buffer allocated so far. */ - buffer = malloc (18); - if (buffer == NULL) - /* No more memory available. We use the static buffer. */ - buffer = static_buf; - else - __libc_setspecific (key, buffer); - } + /* No more memory available. We use the static buffer. */ + buffer = local_buf; + else + __libc_setspecific (key, buffer); } bytes = (unsigned char *) ∈ @@ -89,12 +74,21 @@ inet_ntoa (struct in_addr in) } +/* Initialize buffer. */ +static void +init (void) +{ + if (__libc_key_create (&key, free_key_mem)) + /* Creating the key failed. This means something really went + wrong. In any case use a static buffer which is better than + nothing. */ + static_buf = local_buf; +} + + +/* free the thread specific data, this is done if a thread terminates. */ static void free_key_mem (void *mem) { free (mem); - - /* And we must set the data to NULL so that the destructor is not - called again. */ - __libc_setspecific (key, NULL); } diff --git a/inet/netinet/in.h b/inet/netinet/in.h index 9eda281..faaf7e8 100644 --- a/inet/netinet/in.h +++ b/inet/netinet/in.h @@ -140,7 +140,7 @@ struct in_addr #define IN_LOOPBACKNET 127 /* Address to loopback in software to local host. */ #ifndef INADDR_LOOPBACK -#define INADDR_LOOPBACK ((unsigned) 0x7f000001) /* Inet address 127.0.0.1. */ +# define INADDR_LOOPBACK ((unsigned) 0x7f000001) /* Inet 127.0.0.1. */ #endif @@ -208,7 +208,7 @@ struct ipv6_mreq }; /* Get system-specific definitions. */ -#include <netinet/inbits.h> +#include <bits/in.h> /* Functions to convert between host and network byte order. @@ -272,7 +272,7 @@ extern uint16_t htons __P ((uint16_t __hostshort)); (((uint32_t *) (a))[1] == ((uint32_t *) (b))[2]) && \ (((uint32_t *) (a))[2] == ((uint32_t *) (b))[1]) && \ (((uint32_t *) (a))[3] == ((uint32_t *) (b))[3])) - + /* Bind socket to a privileged IP port. */ extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sin)); diff --git a/inet/test_ifindex.c b/inet/test_ifindex.c new file mode 100644 index 0000000..f0a34cf --- /dev/null +++ b/inet/test_ifindex.c @@ -0,0 +1,59 @@ +/* Test interface name <-> index conversions. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Philip Blundell <Philip.Blundell@pobox.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <net/if.h> + +int +main (void) +{ + int failures = 0; + struct if_nameindex *idx = if_nameindex (), *p; + if (idx == NULL) + { + if (errno != ENOSYS) + { + printf ("Couldn't get any interfaces.\n"); + exit (1); + } + /* The function is simply not implemented. */ + exit (0); + } + + printf ("Idx Name | Idx Name\n"); + + for (p = idx; p->if_index || p->if_name; ++p) + { + char buf[IFNAMSIZ]; + int ni, result; + printf ("%3d %15s | ", p->if_index, p->if_name); + printf ("%3d", ni = if_nametoindex (p->if_name)); + printf ("%15s", if_indextoname (p->if_index, buf)); + result = (ni != p->if_index || (strcmp (buf, p->if_name))); + printf ("%10s", result ? "fail" : "okay"); + printf ("\n"); + failures += result; + } + if_freenameindex (idx); + exit (failures ? 1 : 0); +} |