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authorDenys Vlasenko <vda.linux@googlemail.com>2011-01-20 00:20:36 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2011-01-20 00:20:36 (GMT)
commit53f30b41ec252d9973719b349a644477e72e1a09 (patch)
tree428ee573995ad124668d8ea82a3fd6e5e1903bfb
parent9ad97d504146db2ea6b6a1a23c96ca052c50e270 (diff)
downloadbusybox-53f30b41ec252d9973719b349a644477e72e1a09.tar.gz
busybox-53f30b41ec252d9973719b349a644477e72e1a09.tar.bz2
ifplugd: eliminate aliasing warnings
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--networking/ifplugd.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/networking/ifplugd.c b/networking/ifplugd.c
index 58f56db..3b59a63 100644
--- a/networking/ifplugd.c
+++ b/networking/ifplugd.c
@@ -131,18 +131,20 @@ static int network_ioctl(int request, void* data, const char *errmsg)
static smallint detect_link_mii(void)
{
- struct ifreq ifreq;
- struct mii_ioctl_data *mii = (void *)&ifreq.ifr_data;
+ /* char buffer instead of bona-fide struct avoids aliasing warning */
+ char buf[sizeof(struct ifreq)];
+ struct ifreq *ifreq = (void *)buf;
+ struct mii_ioctl_data *mii = (void *)&ifreq->ifr_data;
- set_ifreq_to_ifname(&ifreq);
+ set_ifreq_to_ifname(ifreq);
- if (network_ioctl(SIOCGMIIPHY, &ifreq, "SIOCGMIIPHY") < 0) {
+ if (network_ioctl(SIOCGMIIPHY, ifreq, "SIOCGMIIPHY") < 0) {
return IFSTATUS_ERR;
}
mii->reg_num = 1;
- if (network_ioctl(SIOCGMIIREG, &ifreq, "SIOCGMIIREG") < 0) {
+ if (network_ioctl(SIOCGMIIREG, ifreq, "SIOCGMIIREG") < 0) {
return IFSTATUS_ERR;
}
@@ -151,18 +153,20 @@ static smallint detect_link_mii(void)
static smallint detect_link_priv(void)
{
- struct ifreq ifreq;
- struct mii_ioctl_data *mii = (void *)&ifreq.ifr_data;
+ /* char buffer instead of bona-fide struct avoids aliasing warning */
+ char buf[sizeof(struct ifreq)];
+ struct ifreq *ifreq = (void *)buf;
+ struct mii_ioctl_data *mii = (void *)&ifreq->ifr_data;
- set_ifreq_to_ifname(&ifreq);
+ set_ifreq_to_ifname(ifreq);
- if (network_ioctl(SIOCDEVPRIVATE, &ifreq, "SIOCDEVPRIVATE") < 0) {
+ if (network_ioctl(SIOCDEVPRIVATE, ifreq, "SIOCDEVPRIVATE") < 0) {
return IFSTATUS_ERR;
}
mii->reg_num = 1;
- if (network_ioctl(SIOCDEVPRIVATE+1, &ifreq, "SIOCDEVPRIVATE+1") < 0) {
+ if (network_ioctl(SIOCDEVPRIVATE+1, ifreq, "SIOCDEVPRIVATE+1") < 0) {
return IFSTATUS_ERR;
}