/*
* binfmt_misc.c
*
- * Copyright (C) 1997 Richard Günther
+ * Copyright (C) 1997 Richard Günther
*
* binfmt_misc detects binaries via a magic or filename extension and invokes
* a specified wrapper. This should obsolete binfmt_java, binfmt_em86 and
char *iname_addr = iname;
int retval;
int fd_binary = -1;
- struct files_struct *files = NULL;
retval = -ENOEXEC;
if (!enabled)
goto _ret;
+ retval = -ENOEXEC;
+ if (bprm->misc_bang)
+ goto _ret;
+
+ bprm->misc_bang = 1;
+
/* to keep locking time low, we copy the interpreter string */
read_lock(&entries_lock);
fmt = check_file(bprm);
goto _ret;
if (!(fmt->flags & MISC_FMT_PRESERVE_ARGV0)) {
- remove_arg_zero(bprm);
+ retval = remove_arg_zero(bprm);
+ if (retval)
+ goto _ret;
}
if (fmt->flags & MISC_FMT_OPEN_BINARY) {
- files = current->files;
- retval = unshare_files();
- if (retval < 0)
- goto _ret;
- if (files == current->files) {
- put_files_struct(files);
- files = NULL;
- }
/* if the binary should be opened on behalf of the
* interpreter than keep it open and assign descriptor
* to it */
fd_binary = get_unused_fd();
if (fd_binary < 0) {
retval = fd_binary;
- goto _unshare;
+ goto _ret;
}
fd_install(fd_binary, bprm->file);
if (retval < 0)
goto _error;
- if (files) {
- put_files_struct(files);
- files = NULL;
- }
_ret:
return retval;
_error:
sys_close(fd_binary);
bprm->interp_flags = 0;
bprm->interp_data = 0;
-_unshare:
- if (files)
- reset_files_struct(current, files);
goto _ret;
}