/* * Copyright (c) 1991, 1992 Paul Kranenburg * Copyright (c) 1993 Branko Lankester * Copyright (c) 1993-1996 Rick Sladkey * Copyright (c) 1996-1999 Wichert Akkerman * Copyright (c) 2003-2015 Dmitry V. Levin * 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. */ #ifdef STRACE_UID_SIZE # if STRACE_UID_SIZE != 16 # error invalid STRACE_UID_SIZE # endif # define SIZEIFY(x) SIZEIFY_(x,STRACE_UID_SIZE) # define SIZEIFY_(x,size) SIZEIFY__(x,size) # define SIZEIFY__(x,size) x ## size # define printuid SIZEIFY(printuid) # define sys_chown SIZEIFY(sys_chown) # define sys_fchown SIZEIFY(sys_fchown) # define sys_getgroups SIZEIFY(sys_getgroups) # define sys_getresuid SIZEIFY(sys_getresuid) # define sys_getuid SIZEIFY(sys_getuid) # define sys_setfsuid SIZEIFY(sys_setfsuid) # define sys_setgroups SIZEIFY(sys_setgroups) # define sys_setresuid SIZEIFY(sys_setresuid) # define sys_setreuid SIZEIFY(sys_setreuid) # define sys_setuid SIZEIFY(sys_setuid) #endif /* STRACE_UID_SIZE */ #include "defs.h" #ifdef STRACE_UID_SIZE # if !NEED_UID16_PARSERS # undef STRACE_UID_SIZE # endif #else # define STRACE_UID_SIZE 32 #endif #ifdef STRACE_UID_SIZE # undef uid_t # define uid_t uid_t_(STRACE_UID_SIZE) # define uid_t_(size) uid_t__(size) # define uid_t__(size) uint ## size ## _t SYS_FUNC(getuid) { if (exiting(tcp)) tcp->u_rval = (uid_t) tcp->u_rval; return RVAL_UDECIMAL; } SYS_FUNC(setfsuid) { if (entering(tcp)) tprintf("%u", (uid_t) tcp->u_arg[0]); else tcp->u_rval = (uid_t) tcp->u_rval; return RVAL_UDECIMAL; } SYS_FUNC(setuid) { printuid("", tcp->u_arg[0]); return RVAL_DECODED; } static void get_print_uid(struct tcb *tcp, const char *prefix, const long addr) { uid_t uid; tprints(prefix); if (!umove_or_printaddr(tcp, addr, &uid)) tprintf("[%u]", uid); } SYS_FUNC(getresuid) { if (entering(tcp)) return 0; get_print_uid(tcp, "", tcp->u_arg[0]); get_print_uid(tcp, ", ", tcp->u_arg[1]); get_print_uid(tcp, ", ", tcp->u_arg[2]); return 0; } SYS_FUNC(setreuid) { printuid("", tcp->u_arg[0]); printuid(", ", tcp->u_arg[1]); return RVAL_DECODED; } SYS_FUNC(setresuid) { printuid("", tcp->u_arg[0]); printuid(", ", tcp->u_arg[1]); printuid(", ", tcp->u_arg[2]); return RVAL_DECODED; } SYS_FUNC(chown) { printpath(tcp, tcp->u_arg[0]); printuid(", ", tcp->u_arg[1]); printuid(", ", tcp->u_arg[2]); return RVAL_DECODED; } SYS_FUNC(fchown) { printfd(tcp, tcp->u_arg[0]); printuid(", ", tcp->u_arg[1]); printuid(", ", tcp->u_arg[2]); return RVAL_DECODED; } void printuid(const char *text, const unsigned int uid) { if ((unsigned int) -1 == uid || (uid_t) -1 == uid) tprintf("%s-1", text); else tprintf("%s%u", text, uid); } SYS_FUNC(setgroups) { unsigned long cur, abbrev_end; uid_t gid; int failed = 0; const unsigned long len = tcp->u_arg[0]; const unsigned long start = tcp->u_arg[1]; const unsigned long size = len * sizeof(gid); const unsigned long end = start + size; tprintf("%lu, ", len); if (len == 0) { tprints("[]"); return RVAL_DECODED; } if (!start || !verbose(tcp) || size / sizeof(gid) != len || end < start) { printaddr(start); return RVAL_DECODED; } if (abbrev(tcp)) { abbrev_end = start + max_strlen * sizeof(gid); if (abbrev_end < start) abbrev_end = end; } else { abbrev_end = end; } tprints("["); for (cur = start; cur < end; cur += sizeof(gid)) { if (cur > start) tprints(", "); if (cur >= abbrev_end) { tprints("..."); break; } if (umoven(tcp, cur, sizeof(gid), &gid) < 0) { tprints("?"); failed = 1; break; } tprintf("%u", (unsigned int) gid); } tprints("]"); if (failed) { tprints(" "); printaddr(start); } return RVAL_DECODED; } SYS_FUNC(getgroups) { if (entering(tcp)) { tprintf("%lu, ", tcp->u_arg[0]); } else { unsigned long cur, abbrev_end; uid_t gid; int failed = 0; const unsigned long len = tcp->u_rval; const unsigned long size = len * sizeof(gid); const unsigned long start = tcp->u_arg[1]; const unsigned long end = start + size; if (!start) { printaddr(start); return 0; } if (len == 0) { tprints("[]"); return 0; } if (!verbose(tcp) || syserror(tcp) || size / sizeof(gid) != len || end < start) { printaddr(start); return 0; } if (abbrev(tcp)) { abbrev_end = start + max_strlen * sizeof(gid); if (abbrev_end < start) abbrev_end = end; } else { abbrev_end = end; } tprints("["); for (cur = start; cur < end; cur += sizeof(gid)) { if (cur > start) tprints(", "); if (cur >= abbrev_end) { tprints("..."); break; } if (umoven(tcp, cur, sizeof(gid), &gid) < 0) { tprints("?"); failed = 1; break; } tprintf("%u", (unsigned int) gid); } tprints("]"); if (failed) { tprints(" "); printaddr(start); } } return 0; } #endif /* STRACE_UID_SIZE */