static void fix_numiptent(ub_param *ub)
{
unsigned long min_ipt;
if (ub->numiptent == NULL)
return;
min_ipt = min_ul(ub->numiptent[0], ub->numiptent[1]);
if (min_ipt < MIN_NUMIPTENT) {
logger(-1, 0, "Warning: NUMIPTENT %lu:%lu is less"
" than minimally allowable value, set to %d:%d",
ub->numiptent[0], ub->numiptent[1],
MIN_NUMIPTENT, MIN_NUMIPTENT);
ub->numiptent[0] = MIN_NUMIPTENT;
ub->numiptent[1] = MIN_NUMIPTENT;
}
}
static void
pmaps(int pid, print_flags_t pflags, regex_t *regex, int fd_kflags, int fd_kcount)
{
FILE *maps = NULL;
int fd_p=-1;
unsigned long start_addr, end_addr;
char *line=0;
size_t line_n=0;
maps = fopen(proc_fn(pid, "maps"), "r");
if (!maps) {
fprintf(stderr,
"ERROR: could not open /proc/%d/maps: %s\n",
pid, strerror(errno));
goto done;
}
fd_p = open(proc_fn(pid, "pagemap"), O_RDONLY);
if (fd_p<0) {
fprintf(stderr,
"ERROR: could not open /proc/%d/pagemap: %s\n",
pid, strerror(errno));
goto done;
}
while (1) {
int ret = getline(&line, &line_n, maps);
if (ret == -1) {
goto done;
}
if (pflags & STACK_ONLY) {
if (strstr(line, "[stack]") == NULL)
continue;
} else if (pflags & HEAP_ONLY) {
if (strstr(line, "[heap]") == NULL)
continue;
} else if (regex) {
if (regexec(regex, line, 0, NULL, 0) != 0)
continue;
}
if (sscanf(line, "%lx-%lx", &start_addr, &end_addr) != 2) {
(void) fprintf(stderr,
"ERROR: did not understand line from /proc/pid/maps. :(\n");
goto done;
}
(void) printf("%s", line);
unsigned long page_start = start_addr / pagesize;
unsigned long page_end = end_addr / pagesize;
x_lseek(fd_p, sizeof(uint64_t)*page_start, SEEK_SET);
unsigned long nr_read = 0;
unsigned long nr_read_total = 0;
for (; page_start < page_end; page_start += BSIZE, nr_read_total += nr_read) {
nr_read = min_ul(page_end-page_start, BSIZE);
if (read(fd_p, pagemap, nr_read*sizeof(uint64_t))
!= (ssize_t)(nr_read*sizeof(uint64_t))) {
// Reading the /proc/pid/pagemap entry for
// /proc/pid/maps [vsyscall] resulted in zero
// byte reads. Let's just ignore such cases.
continue;
}
populate(fd_kflags, pageflags, nr_read);
populate(fd_kcount, pagecount, nr_read);
for (unsigned i=0; i < nr_read; ++i) {
if (PMAP_PRESENT&pagemap[i] && !(pflags & SWAPPED_ONLY)) {
printf(" %#lx -> pfn:%#08llx count:%4llu flags:%s\n",
start_addr + (nr_read_total+i)*pagesize,
PMAP_PFN&pagemap[i],
(unsigned long long)pagecount[i],
flags2str(pageflags[i]));
} else if (PMAP_SWAPPED&pagemap[i] && !(pflags & RESIDENT_ONLY)) {
printf(" #%#lx -> swaptype:%#llx swapoff:%#08llx\n",
start_addr + (nr_read_total+i)*pagesize,
PMAP_SWAP_TYPE&pagemap[i],
(PMAP_SWAP_OFF&pagemap[i])>>5);
} else if (!(pflags & (SWAPPED_ONLY|RESIDENT_ONLY))) {
printf(" !%#lx\n",
start_addr + (nr_read_total+i)*pagesize);
}
}
}
