2 * System call tracing and debugging
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 #include "qemu/osdep.h"
20 #include <sys/select.h>
21 #include <sys/syscall.h>
22 #include <sys/ioccom.h>
32 static void print_sysctl(const struct syscallname *name, abi_long arg1,
33 abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
39 gemu_log("%s({ ", name->name);
40 namep = lock_user(VERIFY_READ, arg1, sizeof(int32_t) * arg2, 1);
44 for (i = 0; i < (uint32_t)arg2; i++) {
45 gemu_log("%d ", tswap32(*p++));
47 unlock_user(namep, arg1, 0);
49 gemu_log("}, %u, 0x" TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ", 0x"
50 TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ")",
51 (uint32_t)arg2, arg3, arg4, arg5, arg6);
54 static void print_execve(const struct syscallname *name, abi_long arg1,
55 abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
58 abi_ulong arg_ptr_addr;
61 s = lock_user_string(arg1);
65 gemu_log("%s(\"%s\",{", name->name, s);
66 unlock_user(s, arg1, 0);
68 for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
69 abi_ulong *arg_ptr, arg_addr;
71 arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
75 arg_addr = tswapl(*arg_ptr);
76 unlock_user(arg_ptr, arg_ptr_addr, 0);
80 if ((s = lock_user_string(arg_addr))) {
81 gemu_log("\"%s\",", s);
82 unlock_user(s, arg_addr, 0);
88 static void print_ioctl(const struct syscallname *name,
89 abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4,
90 abi_long arg5, abi_long arg6)
92 /* Decode the ioctl request */
93 gemu_log("%s(%d, 0x%0lx { IO%s%s GRP:0x%x('%c') CMD:%d LEN:%d }, 0x"
94 TARGET_ABI_FMT_lx ", ...)",
98 arg2 & IOC_OUT ? "R" : "",
99 arg2 & IOC_IN ? "W" : "",
100 (unsigned)IOCGROUP(arg2),
101 isprint(IOCGROUP(arg2)) ? (char)IOCGROUP(arg2) : '?',
103 (int)IOCPARM_LEN(arg2),
108 * Variants for the return value output function
111 static void print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
114 gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno));
116 gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
120 #if 0 /* currently unused */
122 print_syscall_ret_raw(struct syscallname *name, abi_long ret)
124 gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
129 * An array of all of the syscalls we know about
132 static const struct syscallname freebsd_scnames[] = {
133 #include "freebsd/strace.list"
135 static const struct syscallname netbsd_scnames[] = {
136 #include "netbsd/strace.list"
138 static const struct syscallname openbsd_scnames[] = {
139 #include "openbsd/strace.list"
142 static void print_syscall(int num, const struct syscallname *scnames,
143 unsigned int nscnames, abi_long arg1, abi_long arg2, abi_long arg3,
144 abi_long arg4, abi_long arg5, abi_long arg6)
147 const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
148 TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
149 TARGET_ABI_FMT_ld ")";
151 gemu_log("%d ", getpid() );
153 for (i = 0; i < nscnames; i++) {
154 if (scnames[i].nr == num) {
155 if (scnames[i].call != NULL) {
156 scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5,
159 /* XXX: this format system is broken because it uses
160 host types and host pointers for strings */
161 if (scnames[i].format != NULL) {
162 format = scnames[i].format;
164 gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4, arg5,
170 gemu_log("Unknown syscall %d\n", num);
173 static void print_syscall_ret(int num, abi_long ret,
174 const struct syscallname *scnames, unsigned int nscnames)
178 for (i = 0; i < nscnames; i++) {
179 if (scnames[i].nr == num) {
180 if (scnames[i].result != NULL) {
181 scnames[i].result(&scnames[i], ret);
184 gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret,
187 gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret);
196 * The public interface to this module.
198 void print_freebsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
199 abi_long arg4, abi_long arg5, abi_long arg6)
202 print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames), arg1, arg2,
203 arg3, arg4, arg5, arg6);
206 void print_freebsd_syscall_ret(int num, abi_long ret)
209 print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames));
212 void print_netbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
213 abi_long arg4, abi_long arg5, abi_long arg6)
216 print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames),
217 arg1, arg2, arg3, arg4, arg5, arg6);
220 void print_netbsd_syscall_ret(int num, abi_long ret)
223 print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames));
226 void print_openbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
227 abi_long arg4, abi_long arg5, abi_long arg6)
230 print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames), arg1, arg2,
231 arg3, arg4, arg5, arg6);
234 void print_openbsd_syscall_ret(int num, abi_long ret)
237 print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames));