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USE_DEV_RANDOM close the file descriptor even in the rare case it can't read it

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David Carlier 2023-02-26 09:42:04 +00:00 committed by Ozkan Sezer
parent f18b5656f6
commit a5a53c12bf
1 changed files with 6 additions and 3 deletions
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9
src/stdlib/SDL_malloc.c
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@ -2531,11 +2531,14 @@ static int init_mparams(void) {
int fd;
unsigned char buf[sizeof(size_t)];
/* Try to use /dev/urandom, else fall back on using time */
if ((fd = open("/dev/urandom", O_RDONLY)) >= 0 &&
read(fd, buf, sizeof(buf)) == sizeof(buf)) {
s = *((size_t *) buf);
if ((fd = open("/dev/urandom", O_RDONLY)) < 0) {
s = 0;
} else {
s = read(fd, buf, sizeof(buf));
close(fd);
}
if (s == sizeof(buf))
s = *((size_t *)buf);
else
#endif /* USE_DEV_RANDOM */
s = (size_t)(time(0) ^ (size_t)0x55555555U);