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240 lines
6.2 KiB
240 lines
6.2 KiB
7 years ago
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commit 0897c551c0a098020f145885de06a5c10e5cc96b
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Author: Carlos O'Donell <carlos@systemhalted.org>
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Date: Wed Jan 21 10:08:18 2015 -0500
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tst-getpw: Rewrite.
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The test is rewritten to look for the testable conditions and
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exit once they are all detected. This prevents the test from
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iterating over 2000 UIDs and looking up each one. It speeds up
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the test and prevents it from failing if the system under test
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has an NSS-based passwd that is slower than the test timeout.
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See:
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https://sourceware.org/ml/libc-alpha/2015-01/msg00394.html
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diff --git a/pwd/tst-getpw.c b/pwd/tst-getpw.c
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index 059c9e0..e3e101b 100644
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--- a/pwd/tst-getpw.c
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+++ b/pwd/tst-getpw.c
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@@ -1,4 +1,4 @@
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-/* Copyright (C) 1999 Free Software Foundation, Inc.
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+/* Copyright (C) 1999-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@@ -15,26 +15,100 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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+#include <stdio.h>
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#include <pwd.h>
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+#include <errno.h>
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+#include <stdbool.h>
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+
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+/* We want to test getpw by calling it with a uid that does
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+ exist and one that doesn't exist. We track if we've met those
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+ conditions and exit. We also track if we've failed due to lack
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+ of memory. That constitutes all of the standard failure cases. */
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+bool seen_hit;
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+bool seen_miss;
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+bool seen_oom;
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+
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+/* How many errors we've had while running the test. */
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+int errors;
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static void
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check (uid_t uid)
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{
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+ int ret;
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char buf[1024];
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- (void) getpw (uid, buf);
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+ ret = getpw (uid, buf);
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+
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+ /* Successfully read a password line. */
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+ if (ret == 0 && !seen_hit)
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+ {
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+ printf ("PASS: Read a password line given a uid.\n");
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+ seen_hit = true;
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+ }
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+
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+ /* Failed to read a password line. Why? */
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+ if (ret == -1)
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+ {
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+ /* No entry? Technically the errno could be any number
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+ of values including ESRCH, EBADP or EPERM depending
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+ on the quality of the nss module that implements the
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+ underlying lookup. It should be 0 for getpw.*/
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+ if (errno == 0 && !seen_miss)
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+ {
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+ printf ("PASS: Found an invalid uid.\n");
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+ seen_miss = true;
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+ return;
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+ }
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+
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+ /* Out of memory? */
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+ if (errno == ENOMEM && !seen_oom)
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+ {
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+ printf ("FAIL: Failed with ENOMEM.\n");
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+ seen_oom = true;
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+ errors++;
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+ }
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+
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+ /* We don't expect any other values for errno. */
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+ if (errno != ENOMEM && errno != 0)
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+ errors++;
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+ }
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}
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-int
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-main (void)
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+static int
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+do_test (void)
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{
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+ int ret;
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uid_t uid;
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- /* Just call it a different number of times the range should be
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- large enough to find some existing and some non existing uids. */
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+ /* Should return -1 and set errnot to EINVAL. */
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+ ret = getpw (0, NULL);
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+ if (ret == -1 && errno == EINVAL)
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+ {
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+ printf ("PASS: NULL buffer returns -1 and sets errno to EINVAL.\n");
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+ }
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+ else
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+ {
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+ printf ("FAIL: NULL buffer did not return -1 or set errno to EINVAL.\n");
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+ errors++;
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+ }
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+
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+ /* Look for one matching uid, one non-found uid and then stop.
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+ Set an upper limit at the 16-bit UID mark; no need to go farther. */
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+ for (uid = 0; uid < ((uid_t) 65535); ++uid)
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+ {
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+ check (uid);
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+ if (seen_miss && seen_hit)
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+ break;
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+ }
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- for (uid = 0; uid < 2000; ++uid)
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- check (uid);
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+ if (!seen_hit)
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+ printf ("FAIL: Did not read even one password line given a uid.\n");
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- return 0;
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+ if (!seen_miss)
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+ printf ("FAIL: Did not find even one invalid uid.\n");
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+
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+ return errors;
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}
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+
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+#define TEST_FUNCTION do_test ()
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+#include "../test-skeleton.c"
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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+#include <stdio.h>
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#include <pwd.h>
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+#include <errno.h>
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+#include <stdbool.h>
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+
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+/* We want to test getpw by calling it with a uid that does
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+ exist and one that doesn't exist. We track if we've met those
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+ conditions and exit. We also track if we've failed due to lack
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+ of memory. That constitutes all of the standard failure cases. */
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+bool seen_hit;
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+bool seen_miss;
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+bool seen_oom;
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+
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+/* How many errors we've had while running the test. */
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+int errors;
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static void
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check (uid_t uid)
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{
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+ int ret;
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char buf[1024];
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- (void) getpw (uid, buf);
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+ ret = getpw (uid, buf);
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+
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+ /* Successfully read a password line. */
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+ if (ret == 0 && !seen_hit)
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+ {
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+ printf ("PASS: Read a password line given a uid.\n");
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+ seen_hit = true;
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+ }
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+
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+ /* Failed to read a password line. Why? */
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+ if (ret == -1)
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+ {
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+ /* No entry? Technically the errno could be any number
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+ of values including ESRCH, EBADP or EPERM depending
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+ on the quality of the nss module that implements the
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+ underlying lookup. It should be 0 for getpw.*/
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+ if (errno == 0 && !seen_miss)
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+ {
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+ printf ("PASS: Found an invalid uid.\n");
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+ seen_miss = true;
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+ return;
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+ }
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+
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+ /* Out of memory? */
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+ if (errno == ENOMEM && !seen_oom)
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+ {
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+ printf ("FAIL: Failed with ENOMEM.\n");
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+ seen_oom = true;
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+ errors++;
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+ }
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+
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+ /* We don't expect any other values for errno. */
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+ if (errno != ENOMEM && errno != 0)
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+ errors++;
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+ }
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}
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static int
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do_test (void)
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{
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+ int ret;
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uid_t uid;
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- /* Just call it a different number of times the range should be
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- large enough to find some existing and some non existing uids. */
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+ /* Should return -1 and set errnot to EINVAL. */
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+ ret = getpw (0, NULL);
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+ if (ret == -1 && errno == EINVAL)
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+ {
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+ printf ("PASS: NULL buffer returns -1 and sets errno to EINVAL.\n");
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+ }
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+ else
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+ {
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+ printf ("FAIL: NULL buffer did not return -1 or set errno to EINVAL.\n");
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+ errors++;
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+ }
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+
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+ /* Look for one matching uid, one non-found uid and then stop.
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+ Set an upper limit at the 16-bit UID mark; no need to go farther. */
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+ for (uid = 0; uid < ((uid_t) 65535); ++uid)
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+ {
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+ check (uid);
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+ if (seen_miss && seen_hit)
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+ break;
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+ }
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+
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+ if (!seen_hit)
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+ printf ("FAIL: Did not read even one password line given a uid.\n");
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- for (uid = 0; uid < 2000; ++uid)
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- check (uid);
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+ if (!seen_miss)
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+ printf ("FAIL: Did not find even one invalid uid.\n");
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- return 0;
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+ return errors;
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}
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#define TEST_FUNCTION do_test ()
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