target/ppc/kvm: Skip current and parent directories in kvmppc_find_cpu_dt
Some systems have /proc/device-tree/cpus/../clock-frequency. However, this is not the expected path for a CPU device tree directory. Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20220712210810.35514-1-muriloo@linux.ibm.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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@ -1877,6 +1877,12 @@ static int kvmppc_find_cpu_dt(char *buf, int buf_len)
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buf[0] = '\0';
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while ((dirp = readdir(dp)) != NULL) {
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FILE *f;
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/* Don't accidentally read from the current and parent directories */
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if (strcmp(dirp->d_name, ".") == 0 || strcmp(dirp->d_name, "..") == 0) {
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continue;
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}
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snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU,
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dirp->d_name);
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f = fopen(buf, "r");
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