Use mkstemp() and handle /usr/lib64 in imake.c

tmpnam() usage replaced with mkstemp().  Find a suitable tmp directory
checking the TMPDIR environment variable first, then the P_tmpdir
macro and finally /tmp directly.

On 64-bit Linux platforms, check to see if libc.so exists in /usr/lib64.
If found, use it over /usr/lib/libc.so.

diff --git a/cde/config/imake/imake.c b/cde/config/imake/imake.c
index 5e26133a42088605b457428327b0735e569043e2..cf0063f347ecd61816e87ecaaf254979239eb8e5 100644 (file)
--- a/cde/config/imake/imake.c
+++ b/cde/config/imake/imake.c
@@ -950,6 +950,9 @@ static const char libc_c[]=
 "}\n"
 ;
 
+#define libc32path "/usr/lib/libc.so"
+#define libc64path "/usr/lib64/libc.so"
+
 static void
 get_libc_version(FILE *inFile)
 {
@@ -973,13 +976,13 @@ get_libc_version(FILE *inFile)
 
   if (!strcmp(u.sysname, "Linux") &&
       (!strcmp(u.machine, "x86_64"))) {
-    if (!lstat ("/usr/lib64/libc.so", &sb) && S_ISREG(sb.st_mode)) {
-      libcso = strdup("/usr/lib64/libc.so");
+    if (!lstat (libc64path, &sb) && S_ISREG(sb.st_mode)) {
+      libcso = libc64path;
     }
   }
 
   if (libcso == NULL) {
-    libcso = strdup("/usr/lib/libc.so");
+    libcso = libc32path;
   }
 
   if (lstat (libcso, &sb) == 0) {
@@ -1000,13 +1003,35 @@ get_libc_version(FILE *inFile)
        * /usr/lib/libc.so is NOT a symlink -- this is libc 6.x / glibc 2.x
        * now we have to figure this out the hard way.
        */
-      char *aout = tmpnam (NULL);
+      char aout[PATH_MAX];
+      int fd = -1;
       FILE *fp;
       const char *format = "%s -o %s -x c -";
       char *cc;
       int len;
       char *command;
 
+      memset(&aout, '\0', PATH_MAX);
+
+      if (!lstat(getenv("TMPDIR"), &sb) && S_ISDIR(sb.st_mode))
+       strcpy(aout, getenv("TMPDIR"));
+#ifdef P_tmpdir /* defined by XPG and XOPEN, but don't assume we have it */
+      else if (!lstat(P_tmpdir, &sb) && S_ISDIR(sb.st_mode))
+       strcpy(aout, P_tmpdir);
+#endif
+      else if (!lstat("/tmp", &sb) && S_ISDIR(sb.st_mode))
+       strcpy(aout, "/tmp");
+      else
+       abort();
+
+      strcpy(aout+strlen(aout), "/imaketmp.XXXXXX");
+
+      if ((fd = mkstemp(aout)) == -1)
+       abort ();
+
+      if (close(fd) == -1)
+       abort ();
+
       cc = getenv ("CC");
       if (cc == NULL)
        cc = "gcc";
@@ -1034,8 +1059,6 @@ get_libc_version(FILE *inFile)
        abort ();
     }
   }
-
-  free(libcso);
 }
 
 static void