32 lines
617 B
C
32 lines
617 B
C
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// SPDX-License-Identifier: GPL-2.0
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static int find_vdso_map(void **start, void **end)
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{
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FILE *maps;
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char line[128];
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int found = 0;
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maps = fopen("/proc/self/maps", "r");
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if (!maps) {
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fprintf(stderr, "vdso: cannot open maps\n");
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return -1;
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}
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while (!found && fgets(line, sizeof(line), maps)) {
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int m = -1;
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/* We care only about private r-x mappings. */
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if (2 != sscanf(line, "%p-%p r-xp %*x %*x:%*x %*u %n",
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start, end, &m))
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continue;
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if (m < 0)
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continue;
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if (!strncmp(&line[m], VDSO__MAP_NAME,
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sizeof(VDSO__MAP_NAME) - 1))
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found = 1;
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}
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fclose(maps);
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return !found;
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}
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