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Feature/isaac #3997

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Feature/isaac #3997

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6860ffd
Some isaac_ssed fixes:
jesse99 Nov 18, 2012
2ea7aed
Log errors from close instead of ignoring them.
jesse99 Nov 18, 2012
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12 changes: 9 additions & 3 deletions src/rt/rust_util.h
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Original file line number Diff line number Diff line change
Expand Up @@ -142,15 +142,21 @@ inline void isaac_seed(rust_kernel* kernel, uint8_t* dest, size_t size)
(_T("CryptReleaseContext"), CryptReleaseContext(hProv, 0));
#else
int fd = open("/dev/urandom", O_RDONLY);
assert(fd > 0);
if (fd == -1)
kernel->fatal("error opening /dev/urandom: %s", strerror(errno));
size_t amount = 0;
do {
ssize_t ret = read(fd, dest+amount, size-amount);
assert(ret >= 0);
if (ret < 0)
kernel->fatal("error reading /dev/urandom: %s", strerror(errno));
else if (ret == 0)
kernel->fatal("somehow hit eof reading from /dev/urandom");
amount += (size_t)ret;
} while (amount < size);
int ret = close(fd);
assert(ret == 0);
if (ret != 0)
kernel->log(log_warn, "error closing /dev/urandom: %s",
strerror(errno));
#endif
}

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