void fetch_chunks_vma(pid_t pid, struct list *l, long *bin_offset) {
struct proc_chunk *chunk = NULL;
char tmp_fn[30] = "", //map filename
map_line[1024] = ""; //each line of map
FILE *f = NULL; //map file
int vma_no = 0; //count of vma
//open maps file
//iterate through map lines
snprintf(tmp_fn, 30, "/proc/%d/maps", pid);
f = fopen(tmp_fn, "r");
while (fgets(map_line, sizeof(map_line), f)) {
//alloc chunk and set type
chunk = malloc(sizeof(struct proc_chunk));
chunk->type = PROC_CHUNK_VMA;
get_one_vma(pid, map_line, &chunk->vma, vma_no, bin_offset);
/*printf("VMA %08lx-%08lx (size:%8ld) %c%c%c%c %08lx %02x:%02x %d\t%s\n",
chunk->vma.start, chunk->vma.start+chunk->vma.length, chunk->vma.length,
(chunk->vma.prot&PROT_READ)?'r':'-',
(chunk->vma.prot&PROT_WRITE)?'w':'-',
(chunk->vma.prot&PROT_EXEC)?'x':'-',
(chunk->vma.prot&MAP_PRIVATE)?'p':'s',
chunk->vma.pg_off,
chunk->vma.dev >> 8,
chunk->vma.dev & 0xff,
chunk->vma.inode,
chunk->vma.filename);*/
vma_no++;
if (chunk->vma.filename==NULL || strstr(chunk->vma.filename,"[vsyscall]")==NULL) {
list_append(l, chunk);
} else {
free(chunk);
}
}
fclose(f);
}
void fetch_chunks_vma(pid_t pid, int flags, struct list *l, long *bin_offset)
{
struct cp_chunk *chunk = NULL;
char tmp_fn[30], *ret;
char map_line[1024], map_line_save[1024];
struct list work_list; /* VMAs we need to come back to */
struct item *i = NULL;
FILE *f;
int vma_no = 0;
list_init(work_list);
snprintf(tmp_fn, 30, "/proc/%d/maps", pid);
f = fopen(tmp_fn, "r");
while ((ret = fgets(map_line, sizeof(map_line), f)) || i) {
if (!ret)
strncpy(map_line, i->p, sizeof(map_line));
strncpy(map_line_save, map_line, sizeof(map_line_save));
if (!chunk)
chunk = xmalloc(sizeof(struct cp_chunk));
chunk->type = CP_CHUNK_VMA;
/* FIXME: we may not be able to do all VMA's in the first pass, as we
* need a syscall_loc in order to do non-readable VMAs (to call
* mprotect). Put these undoable segments into a list to process again
*/
switch (get_one_vma(pid, map_line, &chunk->vma, flags & GET_LIBRARIES_TOO,
vma_no, bin_offset)) {
case 0:
debug(" Error parsing map: %s", map_line_save);
continue;
case -1:
/* Add to todo list */
if (!ret) {
debug(" No system calls in the image. Can't save process!\n");
abort();
}
debug(" Cannot process map yet. Saving for later.");
list_append(&work_list, strdup(map_line_save));
if (!i)
i = work_list.head;
continue;
}
vma_no++;
list_append(l, chunk);
chunk = NULL;
if (!ret)
i = i->next;
}
if (chunk)
free(chunk);
/* FIXME: free work_list and strings if we're ever going to be long
* running. */
fclose(f);
}