aboutsummaryrefslogtreecommitdiff
path: root/bsd-user/strace.c
diff options
context:
space:
mode:
Diffstat (limited to 'bsd-user/strace.c')
-rw-r--r--bsd-user/strace.c126
1 files changed, 68 insertions, 58 deletions
diff --git a/bsd-user/strace.c b/bsd-user/strace.c
index d73bbcabab..47e5e760f4 100644
--- a/bsd-user/strace.c
+++ b/bsd-user/strace.c
@@ -1,37 +1,49 @@
+/*
+ * System call tracing and debugging
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
#include <stdio.h>
#include <errno.h>
#include <sys/select.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/syscall.h>
-#include "qemu.h"
+#include <sys/ioccom.h>
+#include <ctype.h>
-int do_strace=0;
+#include "qemu.h"
-struct syscallname {
- int nr;
- const char *name;
- const char *format;
- void (*call)(const struct syscallname *,
- abi_long, abi_long, abi_long,
- abi_long, abi_long, abi_long);
- void (*result)(const struct syscallname *, abi_long);
-};
+int do_strace;
/*
* Utility functions
*/
-static void
-print_execve(const struct syscallname *name,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+static void print_execve(const struct syscallname *name, abi_long arg1,
+ abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
+ abi_long arg6)
{
abi_ulong arg_ptr_addr;
char *s;
- if (!(s = lock_user_string(arg1)))
+ s = lock_user_string(arg1);
+ if (s == NULL) {
return;
+ }
gemu_log("%s(\"%s\",{", name->name, s);
unlock_user(s, arg1, 0);
@@ -39,18 +51,19 @@ print_execve(const struct syscallname *name,
abi_ulong *arg_ptr, arg_addr;
arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
- if (!arg_ptr)
+ if (!arg_ptr) {
return;
+ }
arg_addr = tswapl(*arg_ptr);
unlock_user(arg_ptr, arg_ptr_addr, 0);
- if (!arg_addr)
+ if (!arg_addr) {
break;
+ }
if ((s = lock_user_string(arg_addr))) {
gemu_log("\"%s\",", s);
unlock_user(s, arg_addr, 0);
}
}
-
gemu_log("NULL})");
}
@@ -58,10 +71,9 @@ print_execve(const struct syscallname *name,
* Variants for the return value output function
*/
-static void
-print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
+static void print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
{
-if( ret == -1 ) {
+ if (ret == -1) {
gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno));
} else {
gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret);
@@ -90,10 +102,9 @@ static const struct syscallname openbsd_scnames[] = {
#include "openbsd/strace.list"
};
-static void
-print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+static void print_syscall(int num, const struct syscallname *scnames,
+ unsigned int nscnames, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
unsigned int i;
const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ","
@@ -102,36 +113,37 @@ print_syscall(int num, const struct syscallname *scnames, unsigned int nscnames,
gemu_log("%d ", getpid() );
- for (i = 0; i < nscnames; i++)
+ for (i = 0; i < nscnames; i++) {
if (scnames[i].nr == num) {
if (scnames[i].call != NULL) {
scnames[i].call(&scnames[i], arg1, arg2, arg3, arg4, arg5,
- arg6);
+ arg6);
} else {
/* XXX: this format system is broken because it uses
host types and host pointers for strings */
- if (scnames[i].format != NULL)
+ if (scnames[i].format != NULL) {
format = scnames[i].format;
- gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4,
- arg5, arg6);
+ }
+ gemu_log(format, scnames[i].name, arg1, arg2, arg3, arg4, arg5,
+ arg6);
}
return;
}
+ }
gemu_log("Unknown syscall %d\n", num);
}
-static void
-print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames,
- unsigned int nscnames)
+static void print_syscall_ret(int num, abi_long ret,
+ const struct syscallname *scnames, unsigned int nscnames)
{
unsigned int i;
- for (i = 0; i < nscnames; i++)
+ for (i = 0; i < nscnames; i++) {
if (scnames[i].nr == num) {
if (scnames[i].result != NULL) {
scnames[i].result(&scnames[i], ret);
} else {
- if( ret < 0 ) {
+ if (ret < 0) {
gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret,
strerror(-ret));
} else {
@@ -140,52 +152,50 @@ print_syscall_ret(int num, abi_long ret, const struct syscallname *scnames,
}
break;
}
+ }
}
/*
* The public interface to this module.
*/
-void
-print_freebsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_freebsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
- print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames),
- arg1, arg2, arg3, arg4, arg5, arg6);
+
+ print_syscall(num, freebsd_scnames, ARRAY_SIZE(freebsd_scnames), arg1, arg2,
+ arg3, arg4, arg5, arg6);
}
-void
-print_freebsd_syscall_ret(int num, abi_long ret)
+void print_freebsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, freebsd_scnames, ARRAY_SIZE(freebsd_scnames));
}
-void
-print_netbsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_netbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
+
print_syscall(num, netbsd_scnames, ARRAY_SIZE(netbsd_scnames),
arg1, arg2, arg3, arg4, arg5, arg6);
}
-void
-print_netbsd_syscall_ret(int num, abi_long ret)
+void print_netbsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, netbsd_scnames, ARRAY_SIZE(netbsd_scnames));
}
-void
-print_openbsd_syscall(int num,
- abi_long arg1, abi_long arg2, abi_long arg3,
- abi_long arg4, abi_long arg5, abi_long arg6)
+void print_openbsd_syscall(int num, abi_long arg1, abi_long arg2, abi_long arg3,
+ abi_long arg4, abi_long arg5, abi_long arg6)
{
- print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames),
- arg1, arg2, arg3, arg4, arg5, arg6);
+
+ print_syscall(num, openbsd_scnames, ARRAY_SIZE(openbsd_scnames), arg1, arg2,
+ arg3, arg4, arg5, arg6);
}
-void
-print_openbsd_syscall_ret(int num, abi_long ret)
+void print_openbsd_syscall_ret(int num, abi_long ret)
{
+
print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames));
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-02 09:00:28 +0000