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