1 // SPDX-License-Identifier: GPL-2.0
find_map(void ** start,void ** end,const char * name)2 static int find_map(void **start, void **end, const char *name)
3 {
4 	FILE *maps;
5 	char line[128];
6 	int found = 0;
7 
8 	maps = fopen("/proc/self/maps", "r");
9 	if (!maps) {
10 		fprintf(stderr, "cannot open maps\n");
11 		return -1;
12 	}
13 
14 	while (!found && fgets(line, sizeof(line), maps)) {
15 		int m = -1;
16 
17 		/* We care only about private r-x mappings. */
18 		if (2 != sscanf(line, "%p-%p r-xp %*x %*x:%*x %*u %n",
19 				start, end, &m))
20 			continue;
21 		if (m < 0)
22 			continue;
23 
24 		if (!strncmp(&line[m], name, strlen(name)))
25 			found = 1;
26 	}
27 
28 	fclose(maps);
29 	return !found;
30 }
31