2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
7 * port by Greg Banks <gbanks@pocketpenguins.com>
8 * Copyright (c) 1999-2017 The strace developers.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 static unsigned long pagesize;
44 pagesize = sysconf(_SC_PAGESIZE);
50 printaddr(tcp->u_arg[0]);
52 return RVAL_DECODED | RVAL_HEX;
55 #include "xlat/mmap_prot.h"
56 #include "xlat/mmap_flags.h"
59 print_mmap(struct tcb *tcp, kernel_ulong_t *u_arg, unsigned long long offset)
61 const kernel_ulong_t addr = u_arg[0];
62 const kernel_ulong_t len = u_arg[1];
63 const kernel_ulong_t prot = u_arg[2];
64 const kernel_ulong_t flags = u_arg[3];
65 const int fd = u_arg[4];
68 tprintf(", %" PRI_klu ", ", len);
69 printflags64(mmap_prot, prot, "PROT_???");
72 printxval64(mmap_flags, flags & MAP_TYPE, "MAP_???");
73 addflags(mmap_flags, flags & ~MAP_TYPE);
75 printflags64(mmap_flags, flags, "MAP_???");
79 tprintf(", %#llx", offset);
82 /* Syscall name<->function correspondence is messed up on many arches.
84 * i386 has __NR_mmap == 90, and it is "old mmap", and
85 * also it has __NR_mmap2 == 192, which is a "new mmap with page offsets".
86 * But x86_64 has just one __NR_mmap == 9, a "new mmap with byte offsets".
90 #if defined AARCH64 || defined ARM \
91 || defined I386 || defined X86_64 || defined X32 \
93 || defined S390 || defined S390X
94 /* Params are pointed to by u_arg[0], offset is in bytes */
97 kernel_ulong_t u_arg[6];
98 # if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
99 /* We are here only in a 32-bit personality. */
100 unsigned int narrow_arg[6];
101 if (umove_or_printaddr(tcp, tcp->u_arg[0], &narrow_arg))
102 return RVAL_DECODED | RVAL_HEX;
104 for (i = 0; i < 6; i++)
105 u_arg[i] = narrow_arg[i];
107 if (umove_or_printaddr(tcp, tcp->u_arg[0], &u_arg))
108 return RVAL_DECODED | RVAL_HEX;
110 print_mmap(tcp, u_arg, u_arg[5]);
112 return RVAL_DECODED | RVAL_HEX;
114 #endif /* old_mmap architectures */
117 /* Params are pointed to by u_arg[0], offset is in pages */
118 SYS_FUNC(old_mmap_pgoff)
120 kernel_ulong_t u_arg[5];
122 unsigned int narrow_arg[6];
123 unsigned long long offset;
124 if (umove_or_printaddr(tcp, tcp->u_arg[0], &narrow_arg))
125 return RVAL_DECODED | RVAL_HEX;
126 for (i = 0; i < 5; i++)
127 u_arg[i] = narrow_arg[i];
128 offset = narrow_arg[5];
129 offset *= get_pagesize();
130 print_mmap(tcp, u_arg, offset);
132 return RVAL_DECODED | RVAL_HEX;
136 /* Params are passed directly, offset is in bytes */
139 /* Example of kernel-side handling of this variety of mmap:
140 * arch/x86/kernel/sys_x86_64.c::SYSCALL_DEFINE6(mmap, ...) calls
141 * sys_mmap_pgoff(..., off >> PAGE_SHIFT); i.e. off is in bytes,
142 * since the above code converts off to pages.
144 print_mmap(tcp, tcp->u_arg, tcp->u_arg[5]);
146 return RVAL_DECODED | RVAL_HEX;
149 /* Params are passed directly, offset is in pages */
152 /* Try test/mmap_offset_decode.c */
153 unsigned long long offset;
154 offset = tcp->u_arg[5];
155 offset *= get_pagesize();
156 print_mmap(tcp, tcp->u_arg, offset);
158 return RVAL_DECODED | RVAL_HEX;
161 /* Params are passed directly, offset is in 4k units */
164 unsigned long long offset;
165 offset = tcp->u_arg[5];
167 print_mmap(tcp, tcp->u_arg, offset);
169 return RVAL_DECODED | RVAL_HEX;
174 printaddr(tcp->u_arg[0]);
175 tprintf(", %" PRI_klu, tcp->u_arg[1]);
181 do_mprotect(struct tcb *tcp, bool has_pkey)
183 printaddr(tcp->u_arg[0]);
184 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
185 printflags64(mmap_prot, tcp->u_arg[2], "PROT_???");
188 tprintf(", %d", (int) tcp->u_arg[3]);
195 return do_mprotect(tcp, false);
198 SYS_FUNC(pkey_mprotect)
200 return do_mprotect(tcp, true);
203 #include "xlat/mremap_flags.h"
207 printaddr(tcp->u_arg[0]);
208 tprintf(", %" PRI_klu ", %" PRI_klu ", ", tcp->u_arg[1], tcp->u_arg[2]);
209 printflags64(mremap_flags, tcp->u_arg[3], "MREMAP_???");
211 if ((tcp->u_arg[3] & (MREMAP_MAYMOVE | MREMAP_FIXED)) ==
212 (MREMAP_MAYMOVE | MREMAP_FIXED)) {
214 printaddr(tcp->u_arg[4]);
217 return RVAL_DECODED | RVAL_HEX;
220 #include "xlat/madvise_cmds.h"
224 printaddr(tcp->u_arg[0]);
225 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
226 printxval(madvise_cmds, tcp->u_arg[2], "MADV_???");
231 #include "xlat/mlockall_flags.h"
235 printflags(mlockall_flags, tcp->u_arg[0], "MCL_???");
240 #include "xlat/mctl_sync.h"
245 printaddr(tcp->u_arg[0]);
247 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
249 printflags(mctl_sync, tcp->u_arg[2], "MS_???");
254 #include "xlat/mlock_flags.h"
258 printaddr(tcp->u_arg[0]);
259 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
260 printflags(mlock_flags, tcp->u_arg[2], "MLOCK_???");
268 printaddr(tcp->u_arg[0]);
269 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
271 const unsigned long page_size = get_pagesize();
272 const unsigned long page_mask = page_size - 1;
273 unsigned long len = tcp->u_arg[1];
274 unsigned char *vec = NULL;
276 len = len / page_size + (len & page_mask ? 1 : 0);
277 if (syserror(tcp) || !verbose(tcp) ||
278 !tcp->u_arg[2] || !(vec = malloc(len)) ||
279 umoven(tcp, tcp->u_arg[2], len, vec) < 0)
280 printaddr(tcp->u_arg[2]);
284 for (i = 0; i < len; i++) {
287 if (abbrev(tcp) && i >= max_strlen) {
291 tprints((vec[i] & 1) ? "1" : "0");
300 #if defined ALPHA || defined IA64 || defined M68K \
301 || defined SPARC || defined SPARC64
302 SYS_FUNC(getpagesize)
304 return RVAL_DECODED | RVAL_HEX;
308 SYS_FUNC(remap_file_pages)
310 const kernel_ulong_t addr = tcp->u_arg[0];
311 const kernel_ulong_t size = tcp->u_arg[1];
312 const kernel_ulong_t prot = tcp->u_arg[2];
313 const kernel_ulong_t pgoff = tcp->u_arg[3];
314 const kernel_ulong_t flags = tcp->u_arg[4];
317 tprintf(", %" PRI_klu ", ", size);
318 printflags64(mmap_prot, prot, "PROT_???");
319 tprintf(", %" PRI_klu ", ", pgoff);
321 printxval64(mmap_flags, flags & MAP_TYPE, "MAP_???");
322 addflags(mmap_flags, flags & ~MAP_TYPE);
324 printflags64(mmap_flags, flags, "MAP_???");
332 print_protmap_entry(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
334 tprintf("%#08x", *(unsigned int *) elem_buf);
339 SYS_FUNC(subpage_prot)
341 kernel_ulong_t addr = tcp->u_arg[0];
342 kernel_ulong_t len = tcp->u_arg[1];
343 kernel_ulong_t nmemb = len >> 16;
344 kernel_ulong_t map = tcp->u_arg[2];
347 tprintf(", %" PRI_klu ", ", len);
350 print_array(tcp, map, nmemb, &entry, sizeof(entry),
351 umoven_or_printaddr, print_protmap_entry, 0);