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243 lines
6.4 KiB
243 lines
6.4 KiB
/* |
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* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> |
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* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
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* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> |
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* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
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* Copyright (c) 1999-2017 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "defs.h" |
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#include "flock.h" |
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#include "xlat/f_owner_types.h" |
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#include "xlat/f_seals.h" |
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#include "xlat/fcntlcmds.h" |
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#include "xlat/fcntl64cmds.h" |
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#include "xlat/fdflags.h" |
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#include "xlat/lockfcmds.h" |
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#include "xlat/notifyflags.h" |
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static void |
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print_struct_flock64(const struct_kernel_flock64 *fl, const int getlk) |
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{ |
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tprints("{l_type="); |
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printxval(lockfcmds, (unsigned short) fl->l_type, "F_???"); |
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tprints(", l_whence="); |
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printxval(whence_codes, (unsigned short) fl->l_whence, "SEEK_???"); |
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tprintf(", l_start=%" PRId64 ", l_len=%" PRId64, |
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(int64_t) fl->l_start, (int64_t) fl->l_len); |
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if (getlk) |
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tprintf(", l_pid=%lu", (unsigned long) fl->l_pid); |
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tprints("}"); |
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} |
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static void |
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printflock64(struct tcb *const tcp, const kernel_ulong_t addr, const int getlk) |
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{ |
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struct_kernel_flock64 fl; |
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if (fetch_struct_flock64(tcp, addr, &fl)) |
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print_struct_flock64(&fl, getlk); |
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} |
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static void |
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printflock(struct tcb *const tcp, const kernel_ulong_t addr, const int getlk) |
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{ |
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struct_kernel_flock64 fl; |
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if (fetch_struct_flock(tcp, addr, &fl)) |
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print_struct_flock64(&fl, getlk); |
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} |
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static void |
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print_f_owner_ex(struct tcb *const tcp, const kernel_ulong_t addr) |
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{ |
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struct { int type, pid; } owner; |
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if (umove_or_printaddr(tcp, addr, &owner)) |
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return; |
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tprints("{type="); |
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printxval(f_owner_types, owner.type, "F_OWNER_???"); |
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tprintf(", pid=%d}", owner.pid); |
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} |
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static int |
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print_fcntl(struct tcb *tcp) |
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{ |
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const unsigned int cmd = tcp->u_arg[1]; |
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switch (cmd) { |
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case F_SETFD: |
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tprints(", "); |
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printflags(fdflags, tcp->u_arg[2], "FD_???"); |
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break; |
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case F_SETOWN: |
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case F_SETPIPE_SZ: |
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tprintf(", %" PRI_kld, tcp->u_arg[2]); |
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break; |
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case F_DUPFD: |
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case F_DUPFD_CLOEXEC: |
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tprintf(", %" PRI_kld, tcp->u_arg[2]); |
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return RVAL_DECODED | RVAL_FD; |
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case F_SETFL: |
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tprints(", "); |
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tprint_open_modes(tcp->u_arg[2]); |
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break; |
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case F_SETLK: |
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case F_SETLKW: |
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tprints(", "); |
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printflock(tcp, tcp->u_arg[2], 0); |
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break; |
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case F_OFD_SETLK: |
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case F_OFD_SETLKW: |
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tprints(", "); |
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printflock64(tcp, tcp->u_arg[2], 0); |
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break; |
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case F_SETOWN_EX: |
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tprints(", "); |
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print_f_owner_ex(tcp, tcp->u_arg[2]); |
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break; |
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case F_NOTIFY: |
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tprints(", "); |
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printflags64(notifyflags, tcp->u_arg[2], "DN_???"); |
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break; |
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case F_SETLEASE: |
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tprints(", "); |
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printxval64(lockfcmds, tcp->u_arg[2], "F_???"); |
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break; |
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case F_ADD_SEALS: |
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tprints(", "); |
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printflags64(f_seals, tcp->u_arg[2], "F_SEAL_???"); |
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break; |
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case F_SETSIG: |
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tprints(", "); |
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tprints(signame(tcp->u_arg[2])); |
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break; |
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case F_GETOWN: |
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case F_GETPIPE_SZ: |
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break; |
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case F_GETFD: |
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if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0) |
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return 0; |
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tcp->auxstr = sprintflags("flags ", fdflags, |
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(kernel_ulong_t) tcp->u_rval); |
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return RVAL_HEX | RVAL_STR; |
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case F_GETFL: |
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if (entering(tcp) || syserror(tcp)) |
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return 0; |
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tcp->auxstr = sprint_open_modes(tcp->u_rval); |
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return RVAL_HEX | RVAL_STR; |
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case F_GETLK: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printflock(tcp, tcp->u_arg[2], 1); |
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break; |
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case F_OFD_GETLK: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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printflock64(tcp, tcp->u_arg[2], 1); |
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break; |
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case F_GETOWN_EX: |
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if (entering(tcp)) |
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return 0; |
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tprints(", "); |
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print_f_owner_ex(tcp, tcp->u_arg[2]); |
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break; |
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case F_GETLEASE: |
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if (entering(tcp) || syserror(tcp)) |
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return 0; |
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tcp->auxstr = xlookup(lockfcmds, (kernel_ulong_t) tcp->u_rval); |
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return RVAL_HEX | RVAL_STR; |
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case F_GET_SEALS: |
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if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0) |
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return 0; |
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tcp->auxstr = sprintflags("seals ", f_seals, |
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(kernel_ulong_t) tcp->u_rval); |
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return RVAL_HEX | RVAL_STR; |
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case F_GETSIG: |
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if (entering(tcp) || syserror(tcp) || tcp->u_rval == 0) |
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return 0; |
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tcp->auxstr = signame(tcp->u_rval); |
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return RVAL_STR; |
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default: |
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tprintf(", %#" PRI_klx, tcp->u_arg[2]); |
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break; |
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} |
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return RVAL_DECODED; |
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} |
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SYS_FUNC(fcntl) |
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{ |
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if (entering(tcp)) { |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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const unsigned int cmd = tcp->u_arg[1]; |
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const char *str = xlookup(fcntlcmds, cmd); |
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if (str) { |
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tprints(str); |
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} else { |
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/* |
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* fcntl syscall does not recognize these |
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* constants, but we would like to show them |
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* for better debugging experience. |
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*/ |
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printxval(fcntl64cmds, cmd, "F_???"); |
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} |
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} |
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return print_fcntl(tcp); |
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} |
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SYS_FUNC(fcntl64) |
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{ |
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const unsigned int cmd = tcp->u_arg[1]; |
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if (entering(tcp)) { |
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printfd(tcp, tcp->u_arg[0]); |
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tprints(", "); |
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const char *str = xlookup(fcntl64cmds, cmd); |
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if (str) { |
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tprints(str); |
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} else { |
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printxval(fcntlcmds, cmd, "F_???"); |
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} |
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} |
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switch (cmd) { |
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case F_SETLK64: |
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case F_SETLKW64: |
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tprints(", "); |
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printflock64(tcp, tcp->u_arg[2], 0); |
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return RVAL_DECODED; |
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case F_GETLK64: |
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if (exiting(tcp)) { |
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tprints(", "); |
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printflock64(tcp, tcp->u_arg[2], 1); |
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} |
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return 0; |
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} |
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return print_fcntl(tcp); |
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}
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