avoid system binary clashes

1 files changed, 8 insertions, 0 deletions

diff --git a/mkfs.c b/mkfs.c
index b045c8c..6bf88ba 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -51,6 +51,7 @@ xint(uint x)
   return y;
 }
 
+int
 main(int argc, char *argv[])
 {
   int i, cc, fd;
@@ -111,6 +112,13 @@ main(int argc, char *argv[])
       perror(argv[i]);
       exit(1);
     }
+    
+    // Skip leading _ in name when writing to file system.
+    // The binaries are named _rm, _cat, etc. to keep the
+    // build operating system from trying to execute them
+    // in place of system binaries like rm and cat.
+    if(argv[i][0] == '_')
+      ++argv[i];
 
     inum = ialloc(T_FILE);