1 // SPDX-License-Identifier: GPL-2.0 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