From be8efac78d067c138ad8dda03df4336e73f94887 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sat, 8 Jan 2022 11:51:07 +0100 Subject: New upstream version 1.0 --- tests/test-strerror_r.c | 178 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 tests/test-strerror_r.c (limited to 'tests/test-strerror_r.c') diff --git a/tests/test-strerror_r.c b/tests/test-strerror_r.c new file mode 100644 index 0000000..b0e93c9 --- /dev/null +++ b/tests/test-strerror_r.c @@ -0,0 +1,178 @@ +/* Test of strerror_r() function. + Copyright (C) 2007-2022 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see . */ + +#include + +#include + +#include "signature.h" +SIGNATURE_CHECK (strerror_r, int, (int, char *, size_t)); + +#include + +#include "macros.h" + +int +main (void) +{ + char buf[100]; + int ret; + + /* Test results with valid errnum and enough room. */ + + errno = 0; + buf[0] = '\0'; + ASSERT (strerror_r (EACCES, buf, sizeof buf) == 0); + ASSERT (buf[0] != '\0'); + ASSERT (errno == 0); + ASSERT (strlen (buf) < sizeof buf); + + errno = 0; + buf[0] = '\0'; + ASSERT (strerror_r (ETIMEDOUT, buf, sizeof buf) == 0); + ASSERT (buf[0] != '\0'); + ASSERT (errno == 0); + ASSERT (strlen (buf) < sizeof buf); + + errno = 0; + buf[0] = '\0'; + ASSERT (strerror_r (EOVERFLOW, buf, sizeof buf) == 0); + ASSERT (buf[0] != '\0'); + ASSERT (errno == 0); + ASSERT (strlen (buf) < sizeof buf); + + /* POSIX requires strerror (0) to succeed. Reject use of "Unknown + error", but allow "Success", "No error", or even Solaris' "Error + 0" which are distinct patterns from true out-of-range strings. + http://austingroupbugs.net/view.php?id=382 */ + errno = 0; + buf[0] = '\0'; + ret = strerror_r (0, buf, sizeof buf); + ASSERT (ret == 0); + ASSERT (buf[0]); + ASSERT (errno == 0); + ASSERT (strstr (buf, "nknown") == NULL); + ASSERT (strstr (buf, "ndefined") == NULL); + + /* Test results with out-of-range errnum and enough room. POSIX + allows an empty string on success, and allows an unchanged buf on + error, but these are not useful, so we guarantee contents. */ + errno = 0; + buf[0] = '^'; + ret = strerror_r (-3, buf, sizeof buf); + ASSERT (ret == 0 || ret == EINVAL); + ASSERT (buf[0] != '^'); + ASSERT (*buf); + ASSERT (errno == 0); + ASSERT (strlen (buf) < sizeof buf); + + /* Test results with a too small buffer. POSIX requires an error; + only ERANGE for 0 and valid errors, and a choice of ERANGE or + EINVAL for out-of-range values. On error, POSIX permits buf to + be empty, unchanged, or unterminated, but these are not useful, + so we guarantee NUL-terminated truncated contents for all but + size 0. http://austingroupbugs.net/view.php?id=398. Also ensure + that no out-of-bounds writes occur. */ + { + int errs[] = { EACCES, 0, -3, }; + int j; + + buf[sizeof buf - 1] = '\0'; + for (j = 0; j < SIZEOF (errs); j++) + { + int err = errs[j]; + char buf2[sizeof buf] = ""; + size_t len; + size_t i; + + strerror_r (err, buf2, sizeof buf2); + len = strlen (buf2); + ASSERT (len < sizeof buf); + + for (i = 0; i <= len; i++) + { + memset (buf, '^', sizeof buf - 1); + errno = 0; + ret = strerror_r (err, buf, i); + ASSERT (errno == 0); + if (j == 2) + ASSERT (ret == ERANGE || ret == EINVAL); + else + ASSERT (ret == ERANGE); + if (i) + { + ASSERT (strncmp (buf, buf2, i - 1) == 0); + ASSERT (buf[i - 1] == '\0'); + } + ASSERT (strspn (buf + i, "^") == sizeof buf - 1 - i); + } + + strcpy (buf, "BADFACE"); + errno = 0; + ret = strerror_r (err, buf, len + 1); + ASSERT (ret != ERANGE); + ASSERT (errno == 0); + ASSERT (strcmp (buf, buf2) == 0); + } + } + +#if GNULIB_STRERROR + /* Test that strerror_r does not clobber strerror buffer. On some + platforms, this test can only succeed if gnulib also replaces + strerror. */ + { + const char *msg1; + const char *msg2; + const char *msg3; + const char *msg4; + char *str1; + char *str2; + char *str3; + char *str4; + + msg1 = strerror (ENOENT); + ASSERT (msg1); + str1 = strdup (msg1); + ASSERT (str1); + + msg2 = strerror (ERANGE); + ASSERT (msg2); + str2 = strdup (msg2); + ASSERT (str2); + + msg3 = strerror (-4); + ASSERT (msg3); + str3 = strdup (msg3); + ASSERT (str3); + + msg4 = strerror (1729576); + ASSERT (msg4); + str4 = strdup (msg4); + ASSERT (str4); + + strerror_r (EACCES, buf, sizeof buf); + strerror_r (-5, buf, sizeof buf); + ASSERT (STREQ (msg4, str4)); + + free (str1); + free (str2); + free (str3); + free (str4); + } +#endif + + return 0; +} -- cgit v1.2.3