A lot of changes were suggested by Chris.

ExecveHandler.c:
* Use "" instead of <> for LLVM include files
* Use raw I/O, we don't need buffering
* Set errno = 0 before using open()
* strlen() doesn't count NULL terminator in its size
* Use memcmp() instead of strcmp()
* Return result of the real execve(), not 0
* Search for path to bytecode file if not absolute/relative path

SysUtils.c:
* Convert all comments to C-style
* Stop using `bool', use `unsigned' instead

SysUtils.h:
* Stop using `bool', use `unsigned' instead
* Updated comment to FindExecutable()

README.txt:
* Describe the goal of LLEE and an application


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7911 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 13 insertions, 11 deletions

diff --git a/tools/llee/SysUtils.c b/tools/llee/SysUtils.c
index 1c3aa85e5c..90d6bb1290 100644
--- a/tools/llee/SysUtils.c
+++ b/tools/llee/SysUtils.c
@@ -15,16 +15,17 @@
 #include <stdlib.h>
 #include <string.h>
 
-/// isExecutableFile - This function returns true if the filename specified
-/// exists and is executable.
-///
-bool isExecutableFile(const char *ExeFileName) {
+/*
+ * isExecutableFile - This function returns true if the filename specified
+ * exists and is executable.
+ */
+unsigned isExecutableFile(const char *ExeFileName) {
   struct stat Buf;
   if (stat(ExeFileName, &Buf))
-    return false;  // Must not be executable!
+    return 0;                        // Must not be executable!
 
   if (!(Buf.st_mode & S_IFREG))
-    return false;                    // Not a regular file?
+    return 0;                        // Not a regular file?
 
   if (Buf.st_uid == getuid())        // Owner of file?
     return Buf.st_mode & S_IXUSR;
@@ -34,15 +35,16 @@ bool isExecutableFile(const char *ExeFileName) {
     return Buf.st_mode & S_IXOTH;
 }
 
-/// FindExecutable - Find a named executable in the directories listed in $PATH.
-/// If the executable cannot be found, returns NULL.
-/// 
+/*
+ * FindExecutable - Find a named executable in the directories listed in $PATH.
+ * If the executable cannot be found, returns NULL.
+ */ 
 char *FindExecutable(const char *ExeName) {
   /* Try to find the executable in the path */
   const char *PathStr = getenv("PATH");
   if (PathStr == 0) return "";
 
-  // Now we have a colon separated list of directories to search... try them...
+  /* Now we have a colon separated list of directories to search, try them. */
   unsigned PathLen = strlen(PathStr);
   while (PathLen) {
     /* Find the next colon */
@@ -76,6 +78,6 @@ char *FindExecutable(const char *ExeName) {
     ++Colon;
   }
 
-  // If we fell out, we ran out of directories in PATH to search, return failure
+  /* If we fell out, we ran out of directories to search, return failure. */
   return NULL;
 }