fixes for kos-portskos-fixes

Ticket #303

Some of these (like missing getpeername) are reasonable, but
it seems like an odd platform that declares but doesn't implement
access and umask, and implements but doesn't declare lstat.

These changes need testing to see if enough works to be useful.

4 files changed, 38 insertions, 1 deletions

diff --git a/auto.def b/auto.def
index c3ff6e6..781d2a6 100644
--- a/auto.def
+++ b/auto.def
@@ -262,7 +262,7 @@ cc-check-functions geteuid mkstemp isatty
 cc-check-functions regcomp waitpid sigaction sys_signame sys_siglist isascii
 cc-check-functions syslog opendir readlink sleep usleep pipe getaddrinfo utimes
 cc-check-functions shutdown socketpair link symlink fsync dup umask
-cc-check-functions localtime gmtime strptime
+cc-check-functions localtime gmtime strptime getpeername
 if {![cc-check-functions realpath]} {
     cc-check-functions _fullpath
 }
@@ -302,10 +302,15 @@ cc-check-lfs
 if {[get-define _FILE_OFFSET_BITS] != 64 || ![cc-check-functions stat64]} {
     # Modern systems and really old systems have plain stat, fstat, lstat
     cc-check-functions fstat lstat
+    # Some platforms have lstat but don't declare it!
+    cc-with {-includes unistd.h} {
+        cc-check-decls lstat
+    }
 } else {
     # But perhaps some 32 bit systems still require explicit use of the 64 bit versions
     cc-check-functions fstat64 lstat64 lseek64
 }
+cc-check-functions access
 
 define TCL_LIBRARY [get-define libdir]/jim
 
diff --git a/jim-aio.c b/jim-aio.c
index 4c59e1d..d91b350 100644
--- a/jim-aio.c
+++ b/jim-aio.c
@@ -641,6 +641,7 @@ static Jim_Obj *aio_sockname(Jim_Interp *interp, int fd)
     return JimFormatSocketAddress(interp, &sa, salen);
 }
 
+#ifdef HAVE_GETPEERNAME
 static Jim_Obj *aio_peername(Jim_Interp *interp, int fd)
 {
     union sockaddr_any sa;
@@ -651,6 +652,7 @@ static Jim_Obj *aio_peername(Jim_Interp *interp, int fd)
     }
     return JimFormatSocketAddress(interp, &sa, salen);
 }
+#endif
 #endif /* JIM_BOOTSTRAP */
 
 static const char *JimAioErrorString(AioFile *af)
@@ -1324,6 +1326,7 @@ static int aio_cmd_sockname(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
 static int aio_cmd_peername(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
+#ifdef HAVE_GETPEERNAME
     AioFile *af = Jim_CmdPrivData(interp);
     Jim_Obj *objPtr = aio_peername(interp, af->fd);
 
@@ -1333,6 +1336,10 @@ static int aio_cmd_peername(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
     }
     Jim_SetResult(interp, objPtr);
     return JIM_OK;
+#else
+    Jim_SetResultString(interp, "not supported", -1);
+    return JIM_ERR;
+#endif
 }
 
 static int aio_cmd_listen(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
diff --git a/jimiocompat.c b/jimiocompat.c
index 8e7f3f2..1384e61 100644
--- a/jimiocompat.c
+++ b/jimiocompat.c
@@ -249,3 +249,21 @@ int Jim_OpenForRead(const char *filename)
 }
 
 #endif
+
+#ifndef HAVE_UMASK
+mode_t umask(mode_t mode) {
+    return 0;
+}
+#endif
+
+#ifndef HAVE_ACCESS
+/* poor-mans access() - ignore mode and treat everything as F_OK */
+int access(const char *path, int mode)
+{
+        struct stat sb;
+        if (Jim_Stat(path, &sb) == 0 && S_ISREG(sb.st_mode)) {
+            return 0;
+        }
+        return -1;
+}
+#endif
diff --git a/jimiocompat.h b/jimiocompat.h
index 0837b73..5cbcde8 100644
--- a/jimiocompat.h
+++ b/jimiocompat.h
@@ -87,6 +87,9 @@ int Jim_OpenForRead(const char *filename);
             #define Jim_FileStat fstat
         #endif
         #if defined(HAVE_LSTAT)
+            #if !HAVE_DECL_LSTAT
+                int	lstat (const char *__path, struct stat *__buf );
+            #endif
             #define Jim_LinkStat lstat
         #endif
     #endif
@@ -123,4 +126,8 @@ int Jim_OpenForRead(const char *filename);
  */
 int Jim_FileStoreStatData(Jim_Interp *interp, Jim_Obj *varName, const jim_stat_t *sb);
 
+#ifndef HAVE_ACCESS
+int access(const char *path, int mode);
+#endif
+
 #endif