From ab6acefe649751b072fd9be21ff5de7733c1370e Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Wed, 14 Mar 2007 19:22:07 -0700
Subject: [PATCH] Move the loadfile() routine into the syslinux/ namespace, and
 use it.

- Move the loadfile() routine into <syslinux/loadfile.h>.
- Actually use the loadfile() routine.
---
 com32/libutil/Makefile                          |  2 +-
 com32/libutil/include/{ => syslinux}/loadfile.h |  0
 com32/libutil/{ => syslinux}/loadfile.c         |  2 +-
 com32/modules/elf.c                             | 57 +------------------------
 4 files changed, 4 insertions(+), 57 deletions(-)
 rename com32/libutil/include/{ => syslinux}/loadfile.h (100%)
 rename com32/libutil/{ => syslinux}/loadfile.c (97%)

diff --git a/com32/libutil/Makefile b/com32/libutil/Makefile
index 3656fb3..eaae415 100644
--- a/com32/libutil/Makefile
+++ b/com32/libutil/Makefile
@@ -47,7 +47,7 @@ LNXSFLAGS  = -g
 LNXLDFLAGS = -g
 OBJCOPY    = objcopy
 LIBOBJS	   = ansiline.o ansiraw.o get_key.o idle.o sha1hash.o unbase64.o \
-	     movebits.o loadfile.o
+	     syslinux/loadfile.o
 LNXLIBOBJS = $(patsubst %.o,%.lo,$(LIBOBJS))
 
 .SUFFIXES: .lss .c .lo .o .elf .c32 .lnx
diff --git a/com32/libutil/include/loadfile.h b/com32/libutil/include/syslinux/loadfile.h
similarity index 100%
rename from com32/libutil/include/loadfile.h
rename to com32/libutil/include/syslinux/loadfile.h
diff --git a/com32/libutil/loadfile.c b/com32/libutil/syslinux/loadfile.c
similarity index 97%
rename from com32/libutil/loadfile.c
rename to com32/libutil/syslinux/loadfile.c
index d9cfb3b..9a4e3ca 100644
--- a/com32/libutil/loadfile.c
+++ b/com32/libutil/syslinux/loadfile.c
@@ -23,7 +23,7 @@
 #include <fcntl.h>
 #include <sys/stat.h>
 
-#include "loadfile.h"
+#include <syslinux/loadfile.h>
 
 int loadfile(const char *filename, void **ptr, size_t *len)
 {
diff --git a/com32/modules/elf.c b/com32/modules/elf.c
index 0b4aa35..a049bc8 100644
--- a/com32/modules/elf.c
+++ b/com32/modules/elf.c
@@ -42,6 +42,7 @@
 #include <elf.h>
 #include <console.h>
 
+#include <syslinux/loadfile.h>
 #include <syslinux/movebits.h>
 
 /* If we don't have this much memory for the stack, signal failure */
@@ -59,60 +60,6 @@ static inline void error(const char *msg)
   fputs(msg, stderr);
 }
 
-/*
- * Load a file into memory
- */
-int read_file(const char *filename, void **ptr, size_t *lenp)
-{
-  int fd;
-  size_t len;
-  ssize_t rv;
-  struct stat st;
-  char *data = NULL;
-
-  dprintf("filename = \"%s\"\n", filename);
-
-  fd = open(filename, O_RDONLY);
-  if (fd < 0)
-    return -1;
-
-  dprintf("file open...\n");
-
-  if (fstat(fd, &st) < 0)
-    goto bail;
-
-  len = st.st_size;
-
-  dprintf("Allocating %zu bytes...\n", len);
-
-  data = malloc(len);
-  if (!data) 
-    goto bail;
-  
-  *ptr  = data;
-  *lenp = len;
-
-  while (len) {
-    dprintf("Reading %zu bytes... ", len);
-    rv = read(fd, data, len);
-    dprintf("%zd bytes read\n", rv);
-    if (rv <= 0)
-      goto bail;		/* Syslinux doesn't EINTR */
-    data += rv;
-    len -= rv;
-  }
-
-  close(fd);
-
-  return 0;			/* All data read */
-
- bail:
-  if (data)
-    free(data);
-  close(fd);
-  return -1;
-}
-
 int boot_elf(void *ptr, size_t len, char **argv)
 {
   char *cptr = ptr;
@@ -328,7 +275,7 @@ int main(int argc, char *argv[])
     return 1;
   }
 
-  if (read_file(argv[1], &data, &data_len)) {
+  if (loadfile(argv[1], &data, &data_len)) {
     error("Unable to load file\n");
     return 1;
   }
-- 
2.7.4