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Implement curtain for procfs.

This commit is contained in:
elad 2005-09-11 20:15:53 +00:00
parent 0cbb812de5
commit a894866511
1 changed files with 16 additions and 2 deletions
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18
sys/miscfs/procfs/procfs_vnops.c
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@ -1,4 +1,4 @@
/* $NetBSD: procfs_vnops.c,v 1.124 2005/08/30 20:08:01 xtraeme Exp $ */
/* $NetBSD: procfs_vnops.c,v 1.125 2005/09/11 20:15:53 elad Exp $ */
/*
* Copyright (c) 1993, 1995
@ -76,7 +76,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.124 2005/08/30 20:08:01 xtraeme Exp $");
__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.125 2005/09/11 20:15:53 elad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -93,6 +93,7 @@ __KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.124 2005/08/30 20:08:01 xtraeme E
#include <sys/resourcevar.h>
#include <sys/stat.h>
#include <sys/ptrace.h>
#include <sys/sysctl.h> /* XXX for curtain */
#include <uvm/uvm_extern.h> /* for PAGE_SIZE */
@ -525,6 +526,12 @@ procfs_getattr(v)
break;
}
if (procp != NULL) {
if (CURTAIN(curlwp->l_proc->p_ucred->cr_uid,
procp->p_ucred->cr_uid))
return (ENOENT);
}
error = 0;
/* start by zeroing out the attributes */
@ -1028,6 +1035,9 @@ procfs_root_readdir_callback(struct proc *p, void *arg)
return 0;
}
if (CURTAIN(curlwp->l_proc->p_ucred->cr_uid, p->p_ucred->cr_uid))
return (0);
memset(&d, 0, UIO_MX);
d.d_reclen = UIO_MX;
d.d_fileno = PROCFS_FILENO(p->p_pid, PFSproc, -1);
@ -1153,6 +1163,10 @@ procfs_readdir(v)
if (p == NULL)
return ESRCH;
if (CURTAIN(curlwp->l_proc->p_ucred->cr_uid,
p->p_ucred->cr_uid))
return (ESRCH);
fdp = p->p_fd;
lim = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);