code review 5675095: cmd/dist: fix pprof permissions

src/cmd/dist/unix.c

 // Copyright 2012 The Go Authors.  All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // These #ifdefs are being used as a substitute for
 // build configuration, so that on any system, this
 // tool can be built with the local equivalent of
 //      cc *.c
 //
 #ifndef WIN32
@@ skipping 333 matching lines @@
         int fd;
 ········
         breset(b);
         fd = open(file, 0);
         if(fd < 0)
                 fatal("open %s: %s", file, strerror(errno));
         breadfrom(b, fd);
         close(fd);
 }
 
-// writefile writes b to the named file, creating it if needed.
-void
-writefile(Buf *b, char *file)
+// writefile writes b to the named file, creating it if needed.  if
+// exec is non-zero, marks the file as executable.
+void
+writefile(Buf *b, char *file, int exec)
 {
         int fd;
 ········
         fd = creat(file, 0666);
         if(fd < 0)
                 fatal("create %s: %s", file, strerror(errno));
         if(write(fd, b->p, b->len) != b->len)
                 fatal("short write: %s", strerror(errno));
+        if(exec)
+                fchmod(fd, 0755);
         close(fd);
 }
-        
+
 // xmkdir creates the directory p.
 void
 xmkdir(char *p)
 {
         if(mkdir(p, 0777) < 0)
                 fatal("mkdir %s: %s", p, strerror(errno));
 }
 
 // xmkdirall creates the directory p and its parents, as needed.
 void
@@ skipping 327 matching lines @@
 
 // xstrrchr returns a pointer to the final occurrence of c in p.
 char*
 xstrrchr(char *p, int c)
 {
         return strrchr(p, c);
 }
 
 #endif // PLAN9
 #endif // __WINDOWS__