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loader: Attempt to detect broken vmsplit setups.

This commit is contained in:
Alexandre Julliard 2006-04-19 19:28:33 +02:00
parent dd174c54e1
commit 6f38489f91
1 changed files with 17 additions and 0 deletions
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17
loader/glibc.c
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@ -21,8 +21,12 @@
#include "config.h" #include "config.h"
#include "wine/port.h" #include "wine/port.h"
#include <errno.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#ifdef HAVE_UNISTD_H #ifdef HAVE_UNISTD_H
# include <unistd.h> # include <unistd.h>
#endif #endif
@ -81,6 +85,18 @@ static const char *build_new_path( const char *path, const char *name )
return ret; return ret;
} }
static void check_vmsplit( void *stack )
{
if (stack < (void *)0x80000000)
{
/* if the stack is below 0x80000000, assume we can safely try a munmap there */
if (munmap( (void *)0x80000000, 1 ) == -1 && errno == EINVAL)
fprintf( stderr,
"Warning: memory above 0x80000000 doesn't seem to be accessible.\n"
"Wine requires a 3G/1G user/kernel memory split to work properly.\n" );
}
}
/********************************************************************** /**********************************************************************
* main * main
*/ */
@ -103,6 +119,7 @@ int main( int argc, char *argv[] )
loader = new_name; loader = new_name;
} }
check_vmsplit( &argc );
wine_exec_wine_binary( NULL, argv, loader ); wine_exec_wine_binary( NULL, argv, loader );
fprintf( stderr, "wine: could not exec %s\n", threads ); fprintf( stderr, "wine: could not exec %s\n", threads );
exit(1); exit(1);