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- obey FILE_USE and FILE_UNUSE 

- don't assume that non sockets point to vnodes.
This commit is contained in:
christos 2002-03-22 14:53:26 +00:00
parent 2df30ebb25
commit 3b57c6607c
1 changed files with 61 additions and 29 deletions
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90
sys/compat/linux/common/linux_file.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: linux_file.c,v 1.46 2002/03/16 20:43:53 christos Exp $ */
/* $NetBSD: linux_file.c,v 1.47 2002/03/22 14:53:26 christos Exp $ */
/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@ -42,7 +42,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_file.c,v 1.46 2002/03/16 20:43:53 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: linux_file.c,v 1.47 2002/03/22 14:53:26 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -393,6 +393,7 @@ linux_sys_fcntl(p, v, retval)
bsd_to_linux_flock(&bfl, &lfl);
return copyout(&lfl, arg, sizeof lfl);
break;
case LINUX_F_SETLK:
case LINUX_F_SETLKW:
cmd = (cmd == LINUX_F_SETLK ? F_SETLK : F_SETLKW);
@ -408,6 +409,7 @@ linux_sys_fcntl(p, v, retval)
SCARG(&fca, arg) = bfp;
return sys_fcntl(p, &fca, retval);
break;
case LINUX_F_SETOWN:
case LINUX_F_GETOWN:
/*
@ -419,39 +421,69 @@ linux_sys_fcntl(p, v, retval)
fdp = p->p_fd;
if ((fp = fd_getfile(fdp, fd)) == NULL)
return EBADF;
if (fp->f_type == DTYPE_SOCKET) {
FILE_USE(fp);
switch (fp->f_type) {
case DTYPE_SOCKET:
cmd = cmd == LINUX_F_SETOWN ? F_SETOWN : F_GETOWN;
break;
goto doit;
case DTYPE_VNODE:
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VCHR) {
error = EINVAL;
goto done;
}
if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0)
goto done;
d_tty = cdevsw[major(va.va_rdev)].d_tty;
if (!d_tty || (tp = (*d_tty)(va.va_rdev)) == NULL) {
error = EINVAL;
goto done;
}
if (cmd == LINUX_F_GETOWN) {
retval[0] = tp->t_pgrp ? tp->t_pgrp->pg_id
: NO_PID;
error = 0;
goto done;
}
if ((long)arg <= 0) {
pgid = -(long)arg;
} else {
struct proc *p1 = pfind((long)arg);
if (p1 == NULL) {
error = ESRCH;
goto done;
}
pgid = (long)p1->p_pgrp->pg_id;
}
pgrp = pgfind(pgid);
if (pgrp == NULL || pgrp->pg_session != p->p_session) {
error = EPERM;
goto done;
}
tp->t_pgrp = pgrp;
error = 0;
goto done;
case DTYPE_PIPE:
error = EINVAL;
goto done;
default:
panic("linux_fcntl: Bad file %d\n", fp->f_type);
}
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VCHR)
return EINVAL;
if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)))
return error;
d_tty = cdevsw[major(va.va_rdev)].d_tty;
if (!d_tty || (!(tp = (*d_tty)(va.va_rdev))))
return EINVAL;
if (cmd == LINUX_F_GETOWN) {
retval[0] = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
return 0;
}
if ((long)arg <= 0) {
pgid = -(long)arg;
} else {
struct proc *p1 = pfind((long)arg);
if (p1 == 0)
return (ESRCH);
pgid = (long)p1->p_pgrp->pg_id;
}
pgrp = pgfind(pgid);
if (pgrp == NULL || pgrp->pg_session != p->p_session)
return EPERM;
tp->t_pgrp = pgrp;
return 0;
done:
FILE_UNUSE(fp, p);
return error;
default:
return EOPNOTSUPP;
}
doit:
FILE_UNUSE(fp, p);
SCARG(&fca, fd) = fd;
SCARG(&fca, cmd) = cmd;
SCARG(&fca, arg) = arg;