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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* Copyright (c) 1999-2018 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include "flock.h"
#include "xlat/f_owner_types.h"
#include "xlat/f_seals.h"
#include "xlat/fcntlcmds.h"
#include "xlat/fdflags.h"
#include "xlat/lockfcmds.h"
#include "xlat/notifyflags.h"
static void
print_struct_flock64(const struct_kernel_flock64 *fl, const int getlk)
{
tprints("{l_type=");
printxval(lockfcmds, (unsigned short) fl->l_type, "F_???");
tprints(", l_whence=");
printxval(whence_codes, (unsigned short) fl->l_whence, "SEEK_???");
tprintf(", l_start=%" PRId64 ", l_len=%" PRId64,
(int64_t) fl->l_start, (int64_t) fl->l_len);
if (getlk)
tprintf(", l_pid=%lu", (unsigned long) fl->l_pid);
tprints("}");
}
static void
printflock64(struct tcb *const tcp, const kernel_ulong_t addr, const int getlk)
{
struct_kernel_flock64 fl;
if (fetch_struct_flock64(tcp, addr, &fl))
print_struct_flock64(&fl, getlk);
}
static void
printflock(struct tcb *const tcp, const kernel_ulong_t addr, const int getlk)
{
struct_kernel_flock64 fl;
if (fetch_struct_flock(tcp, addr, &fl))
print_struct_flock64(&fl, getlk);
}
static void
print_f_owner_ex(struct tcb *const tcp, const kernel_ulong_t addr)
{
struct { int type, pid; } owner;
if (umove_or_printaddr(tcp, addr, &owner))
return;
tprints("{type=");
printxval(f_owner_types, owner.type, "F_OWNER_???");
tprintf(", pid=%d}", owner.pid);
}
static int
print_fcntl(struct tcb *tcp)
{
const unsigned int cmd = tcp->u_arg[1];
switch (cmd) {
case F_SETFD:
tprints(", ");
printflags(fdflags, tcp->u_arg[2], "FD_???");
break;
case F_SETOWN:
case F_SETPIPE_SZ:
tprintf(", %" PRI_kld, tcp->u_arg[2]);
break;
case F_DUPFD:
case F_DUPFD_CLOEXEC:
tprintf(", %" PRI_kld, tcp->u_arg[2]);
return RVAL_DECODED | RVAL_FD;
case F_SETFL:
tprints(", ");
tprint_open_modes(tcp->u_arg[2]);
break;
case F_SETLK:
case F_SETLKW:
tprints(", ");
printflock(tcp, tcp->u_arg[2], 0);
break;
case F_OFD_SETLK:
case F_OFD_SETLKW:
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 0);
break;
case F_SETOWN_EX:
tprints(", ");
print_f_owner_ex(tcp, tcp->u_arg[2]);
break;
case F_NOTIFY:
tprints(", ");
printflags64(notifyflags, tcp->u_arg[2], "DN_???");
break;
case F_SETLEASE:
tprints(", ");
printxval64(lockfcmds, tcp->u_arg[2], "F_???");
break;
case F_ADD_SEALS:
tprints(", ");
printflags64(f_seals, tcp->u_arg[2], "F_SEAL_???");
break;
case F_SETSIG:
tprints(", ");
tprints(signame(tcp->u_arg[2]));
break;
case F_GETOWN:
case F_GETPIPE_SZ:
break;
case F_GETFD:
if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0)
return 0;
tcp->auxstr = sprintflags("flags ", fdflags,
(kernel_ulong_t) tcp->u_rval);
return RVAL_HEX | RVAL_STR;
case F_GETFL:
if (entering(tcp) || syserror(tcp))
return 0;
tcp->auxstr = sprint_open_modes(tcp->u_rval);
return RVAL_HEX | RVAL_STR;
case F_GETLK:
if (entering(tcp))
return 0;
tprints(", ");
printflock(tcp, tcp->u_arg[2], 1);
break;
case F_OFD_GETLK:
if (entering(tcp))
return 0;
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 1);
break;
case F_GETOWN_EX:
if (entering(tcp))
return 0;
tprints(", ");
print_f_owner_ex(tcp, tcp->u_arg[2]);
break;
case F_GETLEASE:
if (entering(tcp) || syserror(tcp))
return 0;
tcp->auxstr = xlookup(lockfcmds, (kernel_ulong_t) tcp->u_rval);
return RVAL_HEX | RVAL_STR;
case F_GET_SEALS:
if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0)
return 0;
tcp->auxstr = sprintflags("seals ", f_seals,
(kernel_ulong_t) tcp->u_rval);
return RVAL_HEX | RVAL_STR;
case F_GETSIG:
if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0)
return 0;
tcp->auxstr = signame(tcp->u_rval);
return RVAL_STR;
default:
tprintf(", %#" PRI_klx, tcp->u_arg[2]);
break;
}
return RVAL_DECODED;
}
SYS_FUNC(fcntl)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printxval(fcntlcmds, tcp->u_arg[1], "F_???");
}
return print_fcntl(tcp);
}
SYS_FUNC(fcntl64)
{
const unsigned int cmd = tcp->u_arg[1];
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printxval(fcntlcmds, cmd, "F_???");
}
switch (cmd) {
case F_SETLK64:
case F_SETLKW64:
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 0);
return RVAL_DECODED;
case F_GETLK64:
if (exiting(tcp)) {
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 1);
}
return 0;
}
return print_fcntl(tcp);
}
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