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Code Issues Releases Activity

Use suser() to determine super-user-ness.

Browse Source 
Collapse some duplicated checks.

Reviewed by:	bde
This commit is contained in:
Poul-Henning Kamp 1999-01-30 12:27:00 +00:00
parent 904efa5a75
commit 4e48a6bfe0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=43428
2 changed files with 32 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
sys/kern/vfs_extattr.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.114 1999/01/27 21:49:58 dillon Exp $
* $Id: vfs_syscalls.c,v 1.115 1999/01/28 17:32:00 dillon Exp $
*/
/* For 4.3 integer FS ID compatibility */
@ -119,7 +119,19 @@ mount(p, uap)
if (usermount == 0 && (error = suser(p->p_ucred, &p->p_acflag)))
return (error);
/*
* Do not allow NFS export by non-root users.
*/
if (SCARG(uap, flags) & MNT_EXPORTED) {
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
}
/*
* Silently enforce MNT_NOSUID and MNT_NODEV for non-root users
*/
if (suser(p->p_ucred, (u_short *)NULL))
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
/*
* Get vnode to be covered
*/
@ -156,17 +168,6 @@ mount(p, uap)
vput(vp);
return (error);
}
/*
* Do not allow NFS export by non-root users. Silently
* enforce MNT_NOSUID and MNT_NODEV for non-root users.
*/
if (p->p_ucred->cr_uid != 0) {
if (SCARG(uap, flags) & MNT_EXPORTED) {
vput(vp);
return (EPERM);
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
if (vfs_busy(mp, LK_NOWAIT, 0, p)) {
vput(vp);
return (EBUSY);
@ -184,17 +185,6 @@ mount(p, uap)
vput(vp);
return (error);
}
/*
* Do not allow NFS export by non-root users. Silently
* enforce MNT_NOSUID and MNT_NODEV for non-root users.
*/
if (p->p_ucred->cr_uid != 0) {
if (SCARG(uap, flags) & MNT_EXPORTED) {
vput(vp);
return (EPERM);
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
if ((error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) != 0)
return (error);
if (vp->v_type != VDIR) {
@ -639,7 +629,7 @@ statfs(p, uap)
if (error)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
if (p->p_ucred->cr_uid != 0) {
if (suser(p->p_ucred, (u_short *)NULL)) {
bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
sp = &sb;
@ -679,7 +669,7 @@ fstatfs(p, uap)
if (error)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
if (p->p_ucred->cr_uid != 0) {
if (suser(p->p_ucred, (u_short *)NULL)) {
bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
sp = &sb;

42
sys/kern/vfs_syscalls.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
* $Id: vfs_syscalls.c,v 1.114 1999/01/27 21:49:58 dillon Exp $
* $Id: vfs_syscalls.c,v 1.115 1999/01/28 17:32:00 dillon Exp $
*/
/* For 4.3 integer FS ID compatibility */
@ -119,7 +119,19 @@ mount(p, uap)
if (usermount == 0 && (error = suser(p->p_ucred, &p->p_acflag)))
return (error);
/*
* Do not allow NFS export by non-root users.
*/
if (SCARG(uap, flags) & MNT_EXPORTED) {
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
}
/*
* Silently enforce MNT_NOSUID and MNT_NODEV for non-root users
*/
if (suser(p->p_ucred, (u_short *)NULL))
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
/*
* Get vnode to be covered
*/
@ -156,17 +168,6 @@ mount(p, uap)
vput(vp);
return (error);
}
/*
* Do not allow NFS export by non-root users. Silently
* enforce MNT_NOSUID and MNT_NODEV for non-root users.
*/
if (p->p_ucred->cr_uid != 0) {
if (SCARG(uap, flags) & MNT_EXPORTED) {
vput(vp);
return (EPERM);
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
if (vfs_busy(mp, LK_NOWAIT, 0, p)) {
vput(vp);
return (EBUSY);
@ -184,17 +185,6 @@ mount(p, uap)
vput(vp);
return (error);
}
/*
* Do not allow NFS export by non-root users. Silently
* enforce MNT_NOSUID and MNT_NODEV for non-root users.
*/
if (p->p_ucred->cr_uid != 0) {
if (SCARG(uap, flags) & MNT_EXPORTED) {
vput(vp);
return (EPERM);
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
if ((error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) != 0)
return (error);
if (vp->v_type != VDIR) {
@ -639,7 +629,7 @@ statfs(p, uap)
if (error)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
if (p->p_ucred->cr_uid != 0) {
if (suser(p->p_ucred, (u_short *)NULL)) {
bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
sp = &sb;
@ -679,7 +669,7 @@ fstatfs(p, uap)
if (error)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
if (p->p_ucred->cr_uid != 0) {
if (suser(p->p_ucred, (u_short *)NULL)) {
bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
sp = &sb;