com32: replace hard-coded bounce buffer use in com32/libsyslinux-4.00-pre25

Replace hard-coded bounce buffer uses in com32/lib with lmalloc/lfree.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 10 insertions, 7 deletions

diff --git a/com32/lib/syslinux/run_command.c b/com32/lib/syslinux/run_command.c
index 4693e16d..a0ac9a0d 100644
--- a/com32/lib/syslinux/run_command.c
+++ b/com32/lib/syslinux/run_command.c
@@ -30,18 +30,21 @@
 #include <string.h>
 #include <com32.h>
 
-__noreturn syslinux_run_command(const char *command)
+int syslinux_run_command(const char *command)
 {
     static com32sys_t ireg;
+    char *lm_command = lstrdup(command);
 
-    strcpy(__com32.cs_bounce, command);
-
+    if (!lm_command)
+	return -1;
+    
     ireg.eax.w[0] = 0x0003;
-    ireg.es = SEG(__com32.cs_bounce);
-    ireg.ebx.w[0] = OFFS(__com32.cs_bounce);
+    ireg.es = SEG(lm_command);
+    /* ireg.ebx.w[0] = OFFS(lm_command); */
 
     __intcall(0x22, &ireg, NULL);
 
-    /* Should not return even on failure */
-    for (;;) ;
+    /* Should not return even on failure, but in case... */
+    lfree(lm_command);
+    return -1;
 }