diff options
Diffstat (limited to 'portability.h')
| -rw-r--r-- | portability.h | 70 |
1 files changed, 29 insertions, 41 deletions
diff --git a/portability.h b/portability.h index 543846e8bd25..84d0778a5c77 100644 --- a/portability.h +++ b/portability.h @@ -52,7 +52,7 @@ extern "C" { #if defined(_MSC_VER) || defined(__MINGW32__) /* * strncat_s() is supported at least back to Visual - * Studio 2005. + * Studio 2005; we require Visual Studio 2015 or later. */ #define pcap_strlcat(x, y, z) \ strncat_s((x), (z), (y), _TRUNCATE) @@ -70,7 +70,7 @@ extern "C" { #if defined(_MSC_VER) || defined(__MINGW32__) /* * strncpy_s() is supported at least back to Visual - * Studio 2005. + * Studio 2005; we require Visual Studio 2015 or later. */ #define pcap_strlcpy(x, y, z) \ strncpy_s((x), (z), (y), _TRUNCATE) @@ -83,8 +83,6 @@ extern "C" { #endif #ifdef _MSC_VER - #define isascii __isascii - /* * If <crtdbg.h> has been included, and _DEBUG is defined, and * __STDC__ is zero, <crtdbg.h> will define strdup() to call @@ -97,43 +95,9 @@ extern "C" { #endif /* - * On Windows, snprintf(), with that name and with C99 behavior - i.e., - * guaranteeing that the formatted string is null-terminated - didn't - * appear until Visual Studio 2015. Prior to that, the C runtime had - * only _snprintf(), which *doesn't* guarantee that the string is - * null-terminated if it is truncated due to the buffer being too - * small. We therefore can't just define snprintf to be _snprintf - * and define vsnprintf to be _vsnprintf, as we're relying on null- - * termination of strings in all cases. - * - * We also want to allow this to be built with versions of Visual Studio - * prior to VS 2015, so we can't rely on snprintf() being present. - * - * And we want to make sure that, if we support plugins in the future, - * a routine with C99 snprintf() behavior will be available to them. - * We also don't want it to collide with the C library snprintf() if - * there is one. - * - * So we make pcap_snprintf() and pcap_vsnprintf() available, either by - * #defining them to be snprintf or vsnprintf, respectively, or by - * defining our own versions and exporting them. - */ -#ifdef HAVE_SNPRINTF -#define pcap_snprintf snprintf -#else -extern int pcap_snprintf(char *, size_t, PCAP_FORMAT_STRING(const char *), ...) - PCAP_PRINTFLIKE(3, 4); -#endif - -#ifdef HAVE_VSNPRINTF -#define pcap_vsnprintf vsnprintf -#else -extern int pcap_vsnprintf(char *, size_t, const char *, va_list ap); -#endif - -/* - * We also want asprintf(), for some cases where we use it to construct - * dynamically-allocated variable-length strings. + * We want asprintf(), for some cases where we use it to construct + * dynamically-allocated variable-length strings; it's present on + * some, but not all, platforms. */ #ifdef HAVE_ASPRINTF #define pcap_asprintf asprintf @@ -148,6 +112,30 @@ extern int pcap_asprintf(char **, PCAP_FORMAT_STRING(const char *), ...) extern int pcap_vasprintf(char **, const char *, va_list ap); #endif +/* For Solaris before 11. */ +#ifndef timeradd +#define timeradd(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \ + if ((result)->tv_usec >= 1000000) { \ + ++(result)->tv_sec; \ + (result)->tv_usec -= 1000000; \ + } \ + } while (0) +#endif /* timeradd */ +#ifndef timersub +#define timersub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ + } while (0) +#endif /* timersub */ + #ifdef HAVE_STRTOK_R #define pcap_strtok_r strtok_r #else |