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fix(beacon): direct cpufreq fallback on Android SELinux and atomic binary replacement

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This commit is contained in:
Krystof Pesek
2026-11-05 22:03:28 +01:00
parent 8602a3d8cb
commit 703c19c231
2 changed files with 28 additions and 35 deletions
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src/fleet-beacon.c
+27 -34
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@@ -144,43 +144,36 @@ static void resolve_identity(char *node, size_t n_len, char *arch, size_t a_len,
}
static double read_cpu_cpufreq_fallback(void) {
glob_t gl;
double sum_pct = 0.0;
int count = 0;
if (glob("/sys/devices/system/cpu/cpu[0-9]*/cpufreq/scaling_cur_freq", 0, NULL, &gl) == 0) {
for (size_t i = 0; i < gl.gl_pathc; ++i) {
long cur = 0, min_f = 0, max_f = 0;
FILE *fp = fopen(gl.gl_pathv[i], "r");
if (fp) {
if (fscanf(fp, "%ld", &cur) != 1) cur = 0;
fclose(fp);
}
char path_buf[256];
snprintf(path_buf, sizeof(path_buf), "%s", gl.gl_pathv[i]);
char *slash = strrchr(path_buf, '/');
if (slash) {
strcpy(slash + 1, "cpuinfo_min_freq");
fp = fopen(path_buf, "r");
if (fp) {
if (fscanf(fp, "%ld", &min_f) != 1) min_f = 0;
fclose(fp);
}
strcpy(slash + 1, "cpuinfo_max_freq");
fp = fopen(path_buf, "r");
if (fp) {
if (fscanf(fp, "%ld", &max_f) != 1) max_f = 0;
fclose(fp);
}
}
if (max_f > min_f && cur >= min_f) {
double c_pct = ((double)(cur - min_f) / (double)(max_f - min_f)) * 100.0;
if (c_pct < 0.0) c_pct = 0.0;
if (c_pct > 100.0) c_pct = 100.0;
sum_pct += c_pct;
count++;
}
for (int c = 0; c < 16; ++c) {
char p_cur[128], p_min[128], p_max[128];
snprintf(p_cur, sizeof(p_cur), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", c);
snprintf(p_min, sizeof(p_min), "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_min_freq", c);
snprintf(p_max, sizeof(p_max), "/sys/devices/system/cpu/cpu%d/cpufreq/cpuinfo_max_freq", c);
long cur = 0, min_f = 0, max_f = 0;
FILE *fp = fopen(p_cur, "r");
if (!fp) continue;
if (fscanf(fp, "%ld", &cur) != 1) cur = 0;
fclose(fp);
fp = fopen(p_min, "r");
if (fp) {
if (fscanf(fp, "%ld", &min_f) != 1) min_f = 0;
fclose(fp);
}
fp = fopen(p_max, "r");
if (fp) {
if (fscanf(fp, "%ld", &max_f) != 1) max_f = 0;
fclose(fp);
}
if (max_f > min_f && cur >= min_f) {
double c_pct = ((double)(cur - min_f) / (double)(max_f - min_f)) * 100.0;
if (c_pct < 0.0) c_pct = 0.0;
if (c_pct > 100.0) c_pct = 100.0;
sum_pct += c_pct;
count++;
}
globfree(&gl);
}
return (count > 0) ? (sum_pct / (double)count) : 0.0;
}