tidy-up: misc

- lib1531: fix to use `curl_off_t`.
- src/tool_doswin: merge `_WIN32` guards.
- src/tool_doswin: limit `S_ISCHR()` to MS-DOS.
- src: dedupe `CURL_O_BINARY` macro into `tool_setup.h`.
- CMake/CurlTests.c: cleanup/formatting `HAVE_FILE_OFFSET_BITS` test.
- examples/httpput-postfields: delete unused include.
- spelling: MultiSSL.
- whitespace.

Ref: #15652
Closes #15799

CMake/CurlTests.c

@@ -147,9 +147,7 @@ int main(void) { return 0; }
 #endif
 
 #ifdef HAVE_FILE_OFFSET_BITS
-#ifdef _FILE_OFFSET_BITS
 #undef _FILE_OFFSET_BITS
-#endif
 #define _FILE_OFFSET_BITS 64
 #include <sys/types.h>
 /* Check that off_t can represent 2**63 - 1 correctly.

docs/HISTORY.md

@@ -342,7 +342,7 @@ April: added the cyassl backend (later renamed to wolfSSL)
 
  July: OSS-Fuzz started fuzzing libcurl
 
- September: Added Multi-SSL support
+ September: Added MultiSSL support
 
  The website serves 3100 GB/month
 

docs/examples/httpput-postfields.c

@@ -27,7 +27,6 @@
  */
 #include <stdio.h>
 #include <fcntl.h>
-#include <sys/stat.h>
 #include <curl/curl.h>
 
 static const char olivertwist[]=

lib/curl_setup.h

@@ -948,7 +948,7 @@ int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf,
     defined(USE_QUICHE) || defined(USE_MSH3)
 
 #ifdef CURL_WITH_MULTI_SSL
-#error "Multi-SSL combined with QUIC is not supported"
+#error "MultiSSL combined with QUIC is not supported"
 #endif
 
 #define USE_HTTP3

src/tool_cb_wrt.c

@@ -39,11 +39,6 @@
 
 #include "memdebug.h" /* keep this as LAST include */
 
-#ifdef O_BINARY
-#define CURL_O_BINARY O_BINARY
-#else
-#define CURL_O_BINARY 0
-#endif
 #ifdef _WIN32
 #define OPENMODE S_IREAD | S_IWRITE
 #else

src/tool_doswin.c

@@ -45,8 +45,16 @@
 #ifdef _WIN32
 #  undef  PATH_MAX
 #  define PATH_MAX MAX_PATH
+
+#  define _use_lfn(f) (1)  /* long filenames always available */
+#elif !defined(__DJGPP__) || (__DJGPP__ < 2)  /* DJGPP 2.0 has _use_lfn() */
+#  define _use_lfn(f) (0)  /* long filenames never available */
+#elif defined(__DJGPP__)
+#  include <fcntl.h>       /* _use_lfn(f) prototype */
 #endif
 
+#ifdef MSDOS
+
 #ifndef S_ISCHR
 #  ifdef S_IFCHR
 #    define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
@@ -55,15 +63,6 @@
 #  endif
 #endif
 
-#ifdef _WIN32
-#  define _use_lfn(f) (1)   /* long filenames always available */
-#elif !defined(__DJGPP__) || (__DJGPP__ < 2)  /* DJGPP 2.0 has _use_lfn() */
-#  define _use_lfn(f) (0)  /* long filenames never available */
-#elif defined(__DJGPP__)
-#  include <fcntl.h>                /* _use_lfn(f) prototype */
-#endif
-
-#ifdef MSDOS
 /* only used by msdosify() */
 static SANITIZEcode truncate_dryrun(const char *path,
                                     const size_t truncate_pos);

src/tool_operate.c

@@ -111,14 +111,6 @@ extern const unsigned char curl_ca_embed[];
 #endif
 #endif
 
-/* since O_BINARY is used in bitmasks, setting it to zero makes it usable in
-   source code but yet it does not ruin anything */
-#ifdef O_BINARY
-#define CURL_O_BINARY O_BINARY
-#else
-#define CURL_O_BINARY 0
-#endif
-
 #ifndef SOL_IP
 #  define SOL_IP IPPROTO_IP
 #endif

src/tool_setup.h

@@ -66,6 +66,14 @@ extern FILE *tool_stderr;
 #  include "tool_strdup.h"
 #endif
 
+/* since O_BINARY is used in bitmasks, setting it to zero makes it usable in
+   source code but yet it does not ruin anything */
+#ifdef O_BINARY
+#define CURL_O_BINARY O_BINARY
+#else
+#define CURL_O_BINARY 0
+#endif
+
 #if defined(_WIN32)
 #  define CURL_STRICMP(p1, p2)  _stricmp(p1, p2)
 #elif defined(HAVE_STRCASECMP)

tests/libtest/lib1531.c

@@ -31,7 +31,7 @@
 #define TEST_HANG_TIMEOUT 60 * 1000
 
 static char const testData[] = ".abc\0xyz";
-static off_t const testDataSize = sizeof(testData) - 1;
+static curl_off_t const testDataSize = sizeof(testData) - 1;
 
 CURLcode test(char *URL)
 {
@@ -57,8 +57,7 @@ CURLcode test(char *URL)
 
   /* set the options (I left out a few, you'll get the point anyway) */
   curl_easy_setopt(easy, CURLOPT_URL, URL);
-  curl_easy_setopt(easy, CURLOPT_POSTFIELDSIZE_LARGE,
+  curl_easy_setopt(easy, CURLOPT_POSTFIELDSIZE_LARGE, testDataSize);
-                   (curl_off_t)testDataSize);
   curl_easy_setopt(easy, CURLOPT_POSTFIELDS, testData);
 
   /* we start some action by calling perform right away */