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target/ppc/kvm: Skip current and parent directories in kvmppc_find_cpu_dt

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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>
This commit is contained in:
Murilo Opsfelder Araujo 2022-07-12 18:08:10 -03:00 committed by Daniel Henrique Barboza
parent c4b075318e
commit 1a42c69237
1 changed files with 6 additions and 0 deletions
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6
target/ppc/kvm.c
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@ -1877,6 +1877,12 @@ static int kvmppc_find_cpu_dt(char *buf, int buf_len)
buf[0] = '\0';
while ((dirp = readdir(dp)) != NULL) {
FILE *f;
/* Don't accidentally read from the current and parent directories */
if (strcmp(dirp->d_name, ".") == 0 || strcmp(dirp->d_name, "..") == 0) {
continue;
}
snprintf(buf, buf_len, "%s%s/clock-frequency", PROC_DEVTREE_CPU,
dirp->d_name);
f = fopen(buf, "r");