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A syscall like posix_fallocate() that is not supposed to set errno in

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userland needs to always return 0 and store the error code *retval.
This commit is contained in:
martin 2015-02-15 10:48:21 +00:00
parent ff958e114f
commit 906a6a13d7
1 changed files with 8 additions and 5 deletions
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13
sys/kern/vfs_syscalls.c
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@ -1,4 +1,4 @@
/* $NetBSD: vfs_syscalls.c,v 1.492 2014/11/26 10:50:36 manu Exp $ */
/* $NetBSD: vfs_syscalls.c,v 1.493 2015/02/15 10:48:21 martin Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@ -70,7 +70,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.492 2014/11/26 10:50:36 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.493 2015/02/15 10:48:21 martin Exp $");
#ifdef _KERNEL_OPT
#include "opt_fileassoc.h"
@ -4716,12 +4716,14 @@ sys_posix_fallocate(struct lwp *l, const struct sys_posix_fallocate_args *uap,
len = SCARG(uap, len);
if (pos < 0 || len < 0 || len > OFF_T_MAX - pos) {
return EINVAL;
*retval = EINVAL;
return 0;
}
error = fd_getvnode(fd, &fp);
if (error) {
return error;
*retval = error;
return 0;
}
if ((fp->f_flag & FWRITE) == 0) {
error = EBADF;
@ -4739,7 +4741,8 @@ sys_posix_fallocate(struct lwp *l, const struct sys_posix_fallocate_args *uap,
fail:
fd_putfile(fd);
return error;
*retval = error;
return 0;
}
/*