Merge tag 'linux-kselftest-kunit-5.15-rc1' of git://git.kernel.org/pub/scm/linux...
[linux-2.6-microblaze.git] / tools / perf / util / find-map.c
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 }