d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Ensure that garbage from the kernel stack does not wind up being

Browse Source 
returned to user mode in the spare fields of the stat structure.

PR:		kern/14966
Reviewed by:	dillon@freebsd.org
Submitted by:	Kelly Yancey kbyanc@posi.net
This commit is contained in:
Matthew Dillon 1999-11-18 08:14:20 +00:00
parent e918fc8f72
commit 91921bd597
3 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/kern/vfs_extattr.c
View File

@ -1745,6 +1745,8 @@ cvtnstat(sb, nsb)
nsb->st_blksize = sb->st_blksize;
nsb->st_flags = sb->st_flags;
nsb->st_gen = sb->st_gen;
nsb->st_qspare[0] = sb->st_qspare[0];
nsb->st_qspare[1] = sb->st_qspare[1];
}
#ifndef _SYS_SYSPROTO_H_

2
sys/kern/vfs_syscalls.c
View File

@ -1745,6 +1745,8 @@ cvtnstat(sb, nsb)
nsb->st_blksize = sb->st_blksize;
nsb->st_flags = sb->st_flags;
nsb->st_gen = sb->st_gen;
nsb->st_qspare[0] = sb->st_qspare[0];
nsb->st_qspare[1] = sb->st_qspare[1];
}
#ifndef _SYS_SYSPROTO_H_

8
sys/kern/vfs_vnops.c
View File

@ -398,6 +398,14 @@ vn_stat(vp, sb, p)
error = VOP_GETATTR(vp, vap, p->p_ucred, p);
if (error)
return (error);
/*
* Zero the spare stat fields
*/
sb->st_lspare = 0;
sb->st_qspare[0] = 0;
sb->st_qspare[1] = 0;
/*
* Copy from vattr table
*/