Reduce memory used by static buffers and allocate that memory dynamicly

instead.  Based on an initial patch from Tobias Anderberg, but reworked.  I
asked Tobias to look into doing something more like what is done in busybox,
but that proved to be a pain.

One possible concern is that these buffers will probably show up as
memory leaks i.e. with valgrind.  Perhaps we should add in an atexit
call to free this memory right after we allocate it?

1 files changed, 9 insertions, 2 deletions

diff --git a/libc/misc/mntent/mntent.c b/libc/misc/mntent/mntent.c
index 93d591812..d98a6870f 100644
--- a/libc/misc/mntent/mntent.c
+++ b/libc/misc/mntent/mntent.c
@@ -65,10 +65,17 @@ struct mntent *getmntent_r (FILE *filep,
 struct mntent *getmntent(FILE * filep)
 {
     struct mntent *tmp;
-    static char buff[BUFSIZ];
+    static char *buff = NULL;
     static struct mntent mnt;
     LOCK;
-    tmp = getmntent_r(filep, &mnt, buff, sizeof buff);
+    
+    if (!buff) {
+            buff = malloc(BUFSIZ);
+		if (!buff)
+		    abort();
+    }
+    
+    tmp = getmntent_r(filep, &mnt, buff, BUFSIZ);
     UNLOCK;
     return(tmp);
 }