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libgluonutil: use return value of readlink

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This commit is contained in:
lemoer 2020-05-21 16:49:38 +02:00
parent 2c4edfbe61
commit ad485c55fb
1 changed files with 4 additions and 2 deletions
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6
package/libgluonutil/src/libgluonutil.c
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@ -227,15 +227,17 @@ char * gluonutil_get_primary_domain(void) {
snprintf(domain_path, sizeof(domain_path), domain_path_fmt, domain_code); snprintf(domain_path, sizeof(domain_path), domain_path_fmt, domain_code);
free(domain_code); free(domain_code);
char primary_domain_path[PATH_MAX+1] = ""; char primary_domain_path[PATH_MAX+1];
char *primary_domain_code; char *primary_domain_code;
if (readlink(domain_path, primary_domain_path, PATH_MAX) < 0) { ssize_t len = readlink(domain_path, primary_domain_path, PATH_MAX);
if (len < 0) {
// EINVAL = file is not a symlink = the domain itself is the primary domain // EINVAL = file is not a symlink = the domain itself is the primary domain
if (errno != EINVAL) if (errno != EINVAL)
return NULL; return NULL;
primary_domain_code = basename(domain_path); primary_domain_code = basename(domain_path);
} else { } else {
primary_domain_path[len] = '\0';
primary_domain_code = basename(primary_domain_path); primary_domain_code = basename(primary_domain_path);
} }