X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=bsd-user%2Fstrace.c;h=96499751eb081a11af353014f9cca3a1573a9215;hb=83b045ad4e0106836963185ed696991883104359;hp=d73bbcabab3af2a4f3ccefc0d015b8e55331be51;hpb=d06cddf517d2b33389c02971b353d10dd4edda1a;p=mirror_qemu.git diff --git a/bsd-user/strace.c b/bsd-user/strace.c index d73bbcabab..96499751eb 100644 --- a/bsd-user/strace.c +++ b/bsd-user/strace.c @@ -1,37 +1,87 @@ -#include -#include +/* + * 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 . + */ + +#include "qemu/osdep.h" #include -#include -#include #include +#include + #include "qemu.h" -int do_strace=0; +#include "os-strace.h" /* OS dependent strace print functions */ -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 const char * +get_comma(int last) +{ + return (last) ? "" : ","; +} +/* + * Prints out raw parameter using given format. Caller needs + * to do byte swapping if needed. + */ 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) +print_raw_param(const char *fmt, abi_long param, int last) +{ + char format[64]; + + (void)snprintf(format, sizeof(format), "%s%s", fmt, get_comma(last)); + gemu_log(format, param); +} + +static void print_sysctl(const struct syscallname *name, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, + abi_long arg6) +{ + uint32_t i; + int32_t *namep; + + gemu_log("%s({ ", name->name); + namep = lock_user(VERIFY_READ, arg1, sizeof(int32_t) * arg2, 1); + if (namep) { + int32_t *p = namep; + + for (i = 0; i < (uint32_t)arg2; i++) { + gemu_log("%d ", tswap32(*p++)); + } + unlock_user(namep, arg1, 0); + } + gemu_log("}, %u, 0x" TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ", 0x" + TARGET_ABI_FMT_lx ", 0x" TARGET_ABI_FMT_lx ")", + (uint32_t)arg2, arg3, arg4, arg5, 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); @@ -39,43 +89,62 @@ 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})"); } +static void print_ioctl(const struct syscallname *name, + abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5, abi_long arg6) +{ + /* Decode the ioctl request */ + gemu_log("%s(%d, 0x%0lx { IO%s%s GRP:0x%x('%c') CMD:%d LEN:%d }, 0x" + TARGET_ABI_FMT_lx ", ...)", + name->name, + (int)arg1, + (unsigned long)arg2, + arg2 & IOC_OUT ? "R" : "", + arg2 & IOC_IN ? "W" : "", + (unsigned)IOCGROUP(arg2), + isprint(IOCGROUP(arg2)) ? (char)IOCGROUP(arg2) : '?', + (int)arg2 & 0xFF, + (int)IOCPARM_LEN(arg2), + arg3); +} + +static void print_sysarch(const struct syscallname *name, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5, + abi_long arg6) +{ + /* This is os dependent. */ + do_os_print_sysarch(name, arg1, arg2, arg3, arg4, arg5, arg6); +} + /* * 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); } } -#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 */ @@ -90,10 +159,9 @@ 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 +170,37 @@ 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 +209,129 @@ 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)); } + +static void +print_signal(abi_ulong arg, int last) +{ + const char *signal_name = NULL; + switch (arg) { + case TARGET_SIGHUP: + signal_name = "SIGHUP"; + break; + case TARGET_SIGINT: + signal_name = "SIGINT"; + break; + case TARGET_SIGQUIT: + signal_name = "SIGQUIT"; + break; + case TARGET_SIGILL: + signal_name = "SIGILL"; + break; + case TARGET_SIGABRT: + signal_name = "SIGABRT"; + break; + case TARGET_SIGFPE: + signal_name = "SIGFPE"; + break; + case TARGET_SIGKILL: + signal_name = "SIGKILL"; + break; + case TARGET_SIGSEGV: + signal_name = "SIGSEGV"; + break; + case TARGET_SIGPIPE: + signal_name = "SIGPIPE"; + break; + case TARGET_SIGALRM: + signal_name = "SIGALRM"; + break; + case TARGET_SIGTERM: + signal_name = "SIGTERM"; + break; + case TARGET_SIGUSR1: + signal_name = "SIGUSR1"; + break; + case TARGET_SIGUSR2: + signal_name = "SIGUSR2"; + break; + case TARGET_SIGCHLD: + signal_name = "SIGCHLD"; + break; + case TARGET_SIGCONT: + signal_name = "SIGCONT"; + break; + case TARGET_SIGSTOP: + signal_name = "SIGSTOP"; + break; + case TARGET_SIGTTIN: + signal_name = "SIGTTIN"; + break; + case TARGET_SIGTTOU: + signal_name = "SIGTTOU"; + break; + } + if (signal_name == NULL) { + print_raw_param("%ld", arg, last); + return; + } + gemu_log("%s%s", signal_name, get_comma(last)); +} + +void print_taken_signal(int target_signum, const target_siginfo_t *tinfo) +{ + /* + * Print the strace output for a signal being taken: + * --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} --- + */ + gemu_log("%d ", getpid()); + gemu_log("--- "); + print_signal(target_signum, 1); + gemu_log(" ---\n"); +}