Frank- OK, here's a patch that should solve your problem. It's a little uglier than I'd like but there's not much I can do about that, at least it works. On Wed, Feb 20, 2002 at 11:03:51AM -0600, Tseng-hui Lin wrote: > I need to keep some x86 code alive in IA64 land. It looks like ioctl() > SIOCGIFCONF function doesn't work. I compiled the attached test program on > an x86 machine and ran it on an RedHat 7.2 Linux/IA64. It gave me "ioctl > SIOCGIFCONF: Bad address". The program works if it is compiled and run on > an IA64 machine. I know that the sizes of struct ifreq are different on x86 > and IA64. However, it hasn't reached that part yet. I thought it might be > memory alignment problem since ioctl() returns "Bad address". I put some > paddings to make the variables allocated on 8-byte boundary but the problem > is still there. Has any one seen this problem before? > > #include <stdio.h> > #include <stdlib.h> > #include <unistd.h> > #include <sys/ioctl.h> > #include <sys/socket.h> > #include <net/if.h> > > #define MAX_NUM_IFREQ (512) > > main() { > struct ifconf Ifc; > struct ifreq IfcBuf[MAX_NUM_IFREQ]; > struct ifreq *pIfr; > int num_ifreq; > int i; > int fd; > > Ifc.ifc_len = sizeof(IfcBuf); > Ifc.ifc_buf = (char *) IfcBuf; > > if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { > perror("socket()"); > exit(1); > } > if ( ioctl(fd, SIOCGIFCONF, &Ifc) < 0) { > perror("ioctl SIOCGIFCONF"); > exit(1); > } > num_ifreq = Ifc.ifc_len / sizeof(struct ifreq); > for ( pIfr = Ifc.ifc_req, i = 0 ; i < num_ifreq; pIfr++, i++ ) { > printf("%d: %s<=\n", i, pIfr->ifr_name); > } > } > > Tseng-Hui (Frank) Lin tsenglin@us.ibm.com > Phone:(512)838-8312 T/L 678-8312 > FAX: (512)838-3484 T/L 678-3484 > IBM Poughkeepsie Unix Development Lab, Dept XXWA > Building 905-2H018, 11501 Burnet Road, Austin, TX 78758 > > > _______________________________________________ > Linux-IA64 mailing list > Linux-IA64@linuxia64.org > http://lists.linuxia64.org/lists/listinfo/linux-ia64 -- Don Dugger "Censeo Toto nos in Kansa esse decisse." - D. Gale n0ano@n0ano.com Ph: 303/449-0877
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