1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "defs.h" 29 #include <linux/personality.h> 30 #include "xlat/personality_types.h" 31 #include "xlat/personality_flags.h" 32 33 34 SYS_FUNC(personality) 35 { 36 unsigned int pers; 37 38 if (entering(tcp)) { 39 pers = tcp->u_arg[0]; 40 if (0xffffffff == pers) { 41 tprints("0xffffffff"); 42 } else { 43 printxval(personality_types, pers & PER_MASK, "PER_???"); 44 pers &= ~PER_MASK; 45 if (pers) { 46 tprints("|"); 47 printflags(personality_flags, pers, NULL); 48 } 49 } 50 return 0; 51 } 52 53 if (syserror(tcp)) 54 return 0; 55 56 pers = tcp->u_rval; 57 const char *type = xlookup(personality_types, pers & PER_MASK); 58 char *p; 59 static char outstr[1024]; 60 if (type) 61 p = stpcpy(outstr, type); 62 else 63 p = outstr + sprintf(outstr, "%#x /* %s */", pers & PER_MASK, "PER_???"); 64 pers &= ~PER_MASK; 65 if (pers) 66 strcpy(p, sprintflags("|", personality_flags, pers)); 67 tcp->auxstr = outstr; 68 return RVAL_HEX | RVAL_STR; 69 } 70
