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e46a9b8150
Use getline() to dynamically allocate the required line buffer for maps parsing, guaranteeing bounds safety and avoiding compiler warnings by evaluating the return value in the loop condition directly. Assisted-by: Antigravity:gemini-3.5-flash Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
37 lines
686 B
C
37 lines
686 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static int find_map(void **start, void **end, const char *name)
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{
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FILE *maps;
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char *line = NULL;
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size_t len = 0;
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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, "cannot open maps\n");
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return -1;
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}
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while (!found && getline(&line, &len, maps) != -1) {
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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], name, strlen(name)))
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found = 1;
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}
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free(line);
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fclose(maps);
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return !found;
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}
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