Obtain page data about mapped memory segments in the process associated with the file descriptor. This call matches the corresponding mmap() calls.
Call this the first time with an argument of NULL to get the number of map entries:
devctl(fd, DCMD_PROC_PAGEDATA, NULL, 0, &n);
Next, allocate a buffer that's large enough to hold a procfs_mapinfo structure for each map entry, and pass it to another devctl() call:
my_buffer = (procfs_mapinfo *) malloc( sizeof(procfs_mapinfo) * n ); if ( my_buffer == NULL ) { /* Not enough memory. */ } devctl( fd, DCMD_PROC_PAGEDATA, my_buffer, sizeof(procfs_mapinfo) * n, &dummy);