#include <stdio.h> #include <errno.h> #include <sys/select.h> #include <sys/types.h> #include <unistd.h> #include <sys/syscall.h> #include "qemu.h" int do_strace=0; 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); }; /* * 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) { abi_ulong arg_ptr_addr; char *s; if (!(s = lock_user_string(arg1))) return; gemu_log("%s(\"%s\",{", name->name, s); unlock_user(s, arg1, 0); for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) { abi_ulong *arg_ptr, arg_addr; arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1); if (!arg_ptr) return; arg_addr = tswapl(*arg_ptr); unlock_user(arg_ptr, arg_ptr_addr, 0); if (!arg_addr) break; if ((s = lock_user_string(arg_addr))) { gemu_log("\"%s\",", s); unlock_user(s, arg_addr, 0); } } gemu_log("NULL})"); } /* * Variants for the return value output function */ static void print_syscall_ret_addr(const struct syscallname *name, abi_long ret) { if( ret == -1 ) { gemu_log(" = -1 errno=%d (%s)\n", errno, strerror(errno)); } else { gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); } } #if 0 /* currently unused */ static void print_syscall_ret_raw(struct syscallname *name, abi_long ret) { gemu_log(" = 0x" TARGET_ABI_FMT_lx "\n", ret); } #endif /* * An array of all of the syscalls we know about */ static const struct syscallname freebsd_scnames[] = { #include "freebsd/strace.list" }; static const struct syscallname netbsd_scnames[] = { #include "netbsd/strace.list" }; 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) { unsigned int i; const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")"; gemu_log("%d ", getpid() ); 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); } else { /* XXX: this format system is broken because it uses host types and host pointers for strings */ if (scnames[i].format != NULL) format = scnames[i].format; 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) { unsigned int 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 ) { gemu_log(" = -1 errno=" TARGET_ABI_FMT_ld " (%s)\n", -ret, strerror(-ret)); } else { gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); } } 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) { 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) { 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) { 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) { 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) { 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) { print_syscall_ret(num, ret, openbsd_scnames, ARRAY_SIZE(openbsd_scnames)); }