/* WARNING: Unknown calling convention -- yet parameter storage is locked */

if_nameindex * if_nameindex(void)

{

  bool bVar1;

  int __fd;

  int iVar2;

  int iVar3;

  if_nameindex *__ptr;

  char *pcVar4;

  int *piVar5;

  char *__s;

  char **ppcVar6;

  if_nameindex *piVar7;

  uint uVar8;

  uint uVar9;

  undefined1 *puVar10;

  undefined1 auStack_48 [16];

  uint local_30;

  undefined1 *local_2c;

  __fd = FUN_00408250();

  if (__fd < 0) {

    return (if_nameindex *)0x0;

  }

  if (DAT_0041f9f4 == 0) {

    local_2c = (undefined1 *)0x0;

    local_30 = 0;

    iVar2 = ioctl(__fd,0x8912,&local_30);

    if ((-1 < iVar2) && (local_30 != 0)) goto LAB_00408530;

    DAT_0041f9f4 = 1;

  }

  local_30 = 0x80;

LAB_00408530:

  uVar9 = local_30;

  puVar10 = auStack_48;

  do {

    iVar2 = -(uVar9 + 0xe & 0xfffffff8);

    local_2c = puVar10 + iVar2 + 0x10;

    local_30 = uVar9;

    iVar3 = ioctl(__fd,0x8912,&local_30);

    if (iVar3 < 0) {

      close(__fd);

      return (if_nameindex *)0x0;

    }

  } while ((local_30 == uVar9 << 1) &&

          (uVar9 = local_30, puVar10 = puVar10 + iVar2, DAT_0041f9f4 != 0));

  uVar9 = local_30 >> 5;

  __ptr = (if_nameindex *)malloc((uVar9 + 1) * 8)   //possible issue identified - semgrep

  if (__ptr != (if_nameindex *)0x0) {

    piVar7 = __ptr;

    for (uVar8 = 0; uVar8 < uVar9; uVar8 = uVar8 + 1) {

      __s = local_2c + uVar8 * 0x20;

      pcVar4 = strdup(__s);

      piVar7->if_name = pcVar4;

      if ((pcVar4 == (char *)0x0) || (iVar2 = ioctl(__fd,0x8933,__s), iVar2 < 0)) {

        ppcVar6 = &__ptr->if_name;

        piVar5 = __errno_location();

        iVar2 = *piVar5;

        uVar9 = 0;

        while (bVar1 = uVar9 < uVar8, uVar9 = uVar9 + 1, bVar1) {

          pcVar4 = *ppcVar6;

          ppcVar6 = ppcVar6 + 2;

          free(pcVar4);

        }

        free(__ptr);

        close(__fd);

        if (iVar2 != 0x16) {

          return (if_nameindex *)0x0;

        }

        *piVar5 = 0x59;

        return (if_nameindex *)0x0;

      }

      piVar7->if_index = *(uint *)(__s + 0x10);

      piVar7 = piVar7 + 1;

    }

    __ptr[uVar8].if_name = (char *)0x0;

    __ptr[uVar8].if_index = 0;

  }

  close(__fd);

  return __ptr;

}