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* sysdeps/unix/sysv/linux/if_index.c: Use only non-cancelable
	interfaces.
This commit is contained in:
Ulrich Drepper
2003-09-13 05:52:57 +00:00
parent 8dab36a119
commit 5737546087
2 changed files with 16 additions and 12 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2003-09-12 Ulrich Drepper <drepper@redhat.com> 2003-09-12 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/if_index.c: Use only non-cancelable
interfaces.
* grp/Makefile (CFLAGS-getgrgid_r.c, CFLAGS-getgrnam_r.c, * grp/Makefile (CFLAGS-getgrgid_r.c, CFLAGS-getgrnam_r.c,
CFLAGS-fgetgrent.c, CFLAGS-fgetgrent_r.c, CFLAGS-putgrent.c, CFLAGS-fgetgrent.c, CFLAGS-fgetgrent_r.c, CFLAGS-putgrent.c,
CFLAGS-initgroups.c, CFLAGS-getgrgid.c): Add -fexceptions. CFLAGS-initgroups.c, CFLAGS-getgrgid.c): Add -fexceptions.

25
sysdeps/unix/sysv/linux/if_index.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1997,98,99,2000,02 Free Software Foundation, Inc. /* Copyright (C) 1997,98,99,2000,2002,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -25,6 +25,7 @@
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <bits/libc-lock.h> #include <bits/libc-lock.h>
#include <not-cancel.h>
#include "kernel-features.h" #include "kernel-features.h"
@ -53,12 +54,12 @@ if_nametoindex (const char *ifname)
if (__ioctl (fd, SIOCGIFINDEX, &ifr) < 0) if (__ioctl (fd, SIOCGIFINDEX, &ifr) < 0)
{ {
int saved_errno = errno; int saved_errno = errno;
__close (fd); close_not_cancel_no_status (fd);
if (saved_errno == EINVAL) if (saved_errno == EINVAL)
__set_errno (ENOSYS); __set_errno (ENOSYS);
return 0; return 0;
} }
__close (fd); close_not_cancel_no_status (fd);
return ifr.ifr_ifindex; return ifr.ifr_ifindex;
#endif #endif
} }
@ -120,9 +121,9 @@ if_nameindex (void)
do do
{ {
ifc.ifc_buf = alloca (ifc.ifc_len = rq_len); ifc.ifc_buf = alloca (ifc.ifc_len = rq_len);
if (ifc.ifc_buf == NULL || __ioctl (fd, SIOCGIFCONF, &ifc) < 0) if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0)
{ {
__close (fd); close_not_cancel_no_status (fd);
return NULL; return NULL;
} }
rq_len *= 2; rq_len *= 2;
@ -134,7 +135,7 @@ if_nameindex (void)
idx = malloc ((nifs + 1) * sizeof (struct if_nameindex)); idx = malloc ((nifs + 1) * sizeof (struct if_nameindex));
if (idx == NULL) if (idx == NULL)
{ {
__close (fd); close_not_cancel_no_status (fd);
__set_errno (ENOBUFS); __set_errno (ENOBUFS);
return NULL; return NULL;
} }
@ -152,7 +153,7 @@ if_nameindex (void)
for (j = 0; j < i; ++j) for (j = 0; j < i; ++j)
free (idx[j].if_name); free (idx[j].if_name);
free (idx); free (idx);
__close (fd); close_not_cancel_no_status (fd);
if (saved_errno == EINVAL) if (saved_errno == EINVAL)
saved_errno = ENOSYS; saved_errno = ENOSYS;
else if (saved_errno == ENOMEM) else if (saved_errno == ENOMEM)
@ -166,7 +167,7 @@ if_nameindex (void)
idx[i].if_index = 0; idx[i].if_index = 0;
idx[i].if_name = NULL; idx[i].if_name = NULL;
__close (fd); close_not_cancel_no_status (fd);
return idx; return idx;
#endif #endif
} }
@ -208,7 +209,7 @@ if_indextoname (unsigned int ifindex, char *ifname)
ifr.ifr_ifindex = ifindex; ifr.ifr_ifindex = ifindex;
status = __ioctl (fd, SIOCGIFNAME, &ifr); status = __ioctl (fd, SIOCGIFNAME, &ifr);
__close (fd); close_not_cancel_no_status (fd);
# if __ASSUME_SIOCGIFNAME == 0 # if __ASSUME_SIOCGIFNAME == 0
if (status < 0) if (status < 0)
@ -288,9 +289,9 @@ __protocol_available (int *have_inet, int *have_inet6)
do do
{ {
ifc.ifc_buf = alloca (ifc.ifc_len = rq_len); ifc.ifc_buf = alloca (ifc.ifc_len = rq_len);
if (ifc.ifc_buf == NULL || __ioctl (fd, SIOCGIFCONF, &ifc) < 0) if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0)
{ {
__close (fd); close_not_cancel_no_status (fd);
return; return;
} }
rq_len *= 2; rq_len *= 2;
@ -317,6 +318,6 @@ __protocol_available (int *have_inet, int *have_inet6)
break; break;
} }
__close (fd); close_not_cancel_no_status (fd);
} }
#endif #endif