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ifplugd: eliminate aliasing warnings

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-01-20 01:20:36 +01:00
parent 9ad97d5041
commit 53f30b41ec
1 changed files with 14 additions and 10 deletions
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24
networking/ifplugd.c
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@ -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;
}