int __system_properties_init(void)
{
bool fromFile = true;
+ int result = -1;
if(__system_property_area__ != ((void*) &dummy_props)) {
return 0;
struct stat fd_stat;
if (fstat(fd, &fd_stat) < 0) {
- return -1;
+ goto cleanup;
}
- prop_area *pa = mmap(0, fd_stat.st_size, PROT_READ, MAP_SHARED, fd, 0);
-
- if (fromFile) {
- close(fd);
+ if ((fd_stat.st_uid != 0)
+ || (fd_stat.st_gid != 0)
+ || ((fd_stat.st_mode & (S_IWGRP | S_IWOTH)) != 0)) {
+ goto cleanup;
}
+ prop_area *pa = mmap(0, fd_stat.st_size, PROT_READ, MAP_SHARED, fd, 0);
+
if (pa == MAP_FAILED) {
- return -1;
+ goto cleanup;
}
if((pa->magic != PROP_AREA_MAGIC) || (pa->version != PROP_AREA_VERSION)) {
munmap(pa, fd_stat.st_size);
- return -1;
+ goto cleanup;
}
__system_property_area__ = pa;
- return 0;
+ result = 0;
+
+cleanup:
+ if (fromFile) {
+ close(fd);
+ }
+
+ return result;
}
const prop_info *__system_property_find_nth(unsigned n)