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Wed, 13 Oct 2021 16:43:28 +0000 (UTC) Received: from gator.redhat.com (unknown [10.40.192.154]) by smtp.corp.redhat.com (Postfix) with ESMTP id D4ECD5DA60; Wed, 13 Oct 2021 16:43:19 +0000 (UTC) From: Andrew Jones To: kvm@vger.kernel.org Cc: pbonzini@redhat.com, thuth@redhat.com, ahmeddan@amazon.com Subject: [PATCH kvm-unit-tests 2/2] lib: Introduce strtoll/strtoull Date: Wed, 13 Oct 2021 18:42:59 +0200 Message-Id: <20211013164259.88281-3-drjones@redhat.com> In-Reply-To: <20211013164259.88281-1-drjones@redhat.com> References: <20211013164259.88281-1-drjones@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Signed-off-by: Andrew Jones Reviewed-by: Daniele Ahmed --- lib/stdlib.h | 2 ++ lib/string.c | 51 +++++++++++++++++++++++++++++++++++++-------------- 2 files changed, 39 insertions(+), 14 deletions(-) diff --git a/lib/stdlib.h b/lib/stdlib.h index 33c00e8a5204..28496d7ae333 100644 --- a/lib/stdlib.h +++ b/lib/stdlib.h @@ -9,5 +9,7 @@ long int strtol(const char *nptr, char **endptr, int base); unsigned long int strtoul(const char *nptr, char **endptr, int base); +long long int strtoll(const char *nptr, char **endptr, int base); +unsigned long long int strtoull(const char *nptr, char **endptr, int base); #endif /* _STDLIB_H_ */ diff --git a/lib/string.c b/lib/string.c index ffc7c7e4f855..27106dae0b0b 100644 --- a/lib/string.c +++ b/lib/string.c @@ -168,9 +168,10 @@ static int isspace(int c) return c == ' ' || c == '\t' || c == '\r' || c == '\n' || c == '\v' || c == '\f'; } -static unsigned long __strtol(const char *nptr, char **endptr, - int base, bool is_signed) { - unsigned long acc = 0; +static unsigned long long __strtoll(const char *nptr, char **endptr, + int base, bool is_signed, + bool is_longlong) { + unsigned long long ull = 0; const char *s = nptr; int neg, c; @@ -210,36 +211,58 @@ static unsigned long __strtol(const char *nptr, char **endptr, else break; - if (is_signed) { - long sacc = (long)acc; - assert(!check_mul_overflow(sacc, base)); - assert(!check_add_overflow(sacc * base, c)); + if (!is_longlong) { + if (is_signed) { + long sl = (long)ull; + assert(!check_mul_overflow(sl, base)); + assert(!check_add_overflow(sl * base, c)); + } else { + unsigned long ul = (unsigned long)ull; + assert(!check_mul_overflow(ul, base)); + assert(!check_add_overflow(ul * base, c)); + } } else { - assert(!check_mul_overflow(acc, base)); - assert(!check_add_overflow(acc * base, c)); + if (is_signed) { + long long sll = (long long)ull; + assert(!check_mul_overflow(sll, base)); + assert(!check_add_overflow(sll * base, c)); + } else { + assert(!check_mul_overflow(ull, base)); + assert(!check_add_overflow(ull * base, c)); + } } - acc = acc * base + c; + ull = ull * base + c; s++; } if (neg) - acc = -acc; + ull = -ull; if (endptr) *endptr = (char *)s; - return acc; + return ull; } long int strtol(const char *nptr, char **endptr, int base) { - return __strtol(nptr, endptr, base, true); + return __strtoll(nptr, endptr, base, true, false); } unsigned long int strtoul(const char *nptr, char **endptr, int base) { - return __strtol(nptr, endptr, base, false); + return __strtoll(nptr, endptr, base, false, false); +} + +long long int strtoll(const char *nptr, char **endptr, int base) +{ + return __strtoll(nptr, endptr, base, true, true); +} + +unsigned long long int strtoull(const char *nptr, char **endptr, int base) +{ + return __strtoll(nptr, endptr, base, false, true); } long atol(const char *ptr)