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      1 /*
      2  * Copyright (c) 2014-2015 Dmitry V. Levin <ldv (at) altlinux.org>
      3  * Copyright (c) 2014-2018 The strace developers.
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "defs.h"
     30 
     31 #include "xlat/fan_classes.h"
     32 #include "xlat/fan_init_flags.h"
     33 
     34 #ifndef FAN_ALL_CLASS_BITS
     35 # define FAN_ALL_CLASS_BITS (FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | FAN_CLASS_PRE_CONTENT)
     36 #endif
     37 #ifndef FAN_NOFD
     38 # define FAN_NOFD -1
     39 #endif
     40 
     41 SYS_FUNC(fanotify_init)
     42 {
     43 	unsigned int flags = tcp->u_arg[0];
     44 
     45 	printxval(fan_classes, flags & FAN_ALL_CLASS_BITS, "FAN_CLASS_???");
     46 	flags &= ~FAN_ALL_CLASS_BITS;
     47 	if (flags) {
     48 		tprints("|");
     49 		printflags(fan_init_flags, flags, "FAN_???");
     50 	}
     51 	tprints(", ");
     52 	tprint_open_modes((unsigned) tcp->u_arg[1]);
     53 
     54 	return RVAL_DECODED | RVAL_FD;
     55 }
     56 
     57 #include "xlat/fan_mark_flags.h"
     58 #include "xlat/fan_event_flags.h"
     59 
     60 SYS_FUNC(fanotify_mark)
     61 {
     62 	printfd(tcp, tcp->u_arg[0]);
     63 	tprints(", ");
     64 	printflags(fan_mark_flags, tcp->u_arg[1], "FAN_MARK_???");
     65 	tprints(", ");
     66 	/*
     67 	 * the mask argument is defined as 64-bit,
     68 	 * but kernel uses the lower 32 bits only.
     69 	 */
     70 	unsigned long long mask = 0;
     71 	int argn = getllval(tcp, &mask, 2);
     72 #ifdef HPPA
     73 	/* Parsic is weird.  See arch/parisc/kernel/sys_parisc32.c.  */
     74 	mask = (mask << 32) | (mask >> 32);
     75 #endif
     76 	printflags64(fan_event_flags, mask, "FAN_???");
     77 	tprints(", ");
     78 	if ((int) tcp->u_arg[argn] == FAN_NOFD) {
     79 		print_xlat_d(FAN_NOFD);
     80 		tprints(", ");
     81 	} else {
     82 		print_dirfd(tcp, tcp->u_arg[argn]);
     83 	}
     84 	printpath(tcp, tcp->u_arg[argn + 1]);
     85 
     86 	return RVAL_DECODED;
     87 }
     88