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Thu, 27 Aug 2020 21:20:34 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL 08/18] linux-user: Add strace support for printing arguments of some clock and time functions Date: Thu, 27 Aug 2020 21:20:08 +0200 Message-Id: <20200827192018.2442099-9-laurent@vivier.eu> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200827192018.2442099-1-laurent@vivier.eu> References: <20200827192018.2442099-1-laurent@vivier.eu> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:NB9938P+5opmnSzFZMuNXxDKGGhWCw6l5FGZtDqM5ZSbPCAW559 3FnRcJGlKwt2cZHDrEkTtdsNLw+ZzLbmvI8eRWhe96Mojn+zUOlMWv8vXhSE+I/P7t+G91B 9y7PWpWOd/p/xV+VQSrkQf77d6J2FXxmmRVNhXlRAXSCfUGGCrJ2IxpNPD2b/qQhW7dd0tA A1sqjTjolCreJ6Dtvst7A== X-UI-Out-Filterresults: notjunk:1;V03:K0:ZQX412ckV8k=:o9DBYbd/avRQ2Cdacs7nug /OqYFE5LUbnRbGUOrl+VPakdMc8YVCXG445Or1vO0xWAfLN06qs9j8N/bagy/gUtJBFY/opOD Rtpw1wezpEYDbFOGkkDFZc2tlr2GJ/dj+JSDzxH7bZ584eNRX6cAMwT2ejOWfy2w20BnJ4bGv w1GWCHRlB/sHAyuWfczTR7oLLTCPdJkWM2xbbal+8bH8kBWb4ichj6SiJ9nDxpghl5khfpV2e xYefPb6vTcLMEcb58GXzl6AKL2uz1nWVsk6CxZKcFWmX2CsC1FHkYwnmCoaSkPrWUn4Gcx48s akOYR+jqyhq6TwTDrTHD5FRD1UKLyUzgzwiF7ZBWYUvduREcndbtxUuo3j4SWmgiGmqeT/c3C KT9KbBhs545gDWYxqv116TRUROJzmON+Q6yKvLcnuCvy5PsuXHIjxlpuveLQw1O3TOB2F1YrH 5haaxfnFHWfNhJVKFTqLq8IVOAWW6Iq5SJwqZPtebPPOpAxyodN6ML8OBejJ4do8CTEGATLnH fADa63VVjv7SGyOP8T9GixCC1k8Z5PaLpC4XU+QzTmP/ZMO/DUoX/E5Tb8S9X2WhGbvXzjhWy nSNSl4uybzXNAh+QGUb+PHRBESAn0R77Z3cQtaf0QFo7Ai84mXnbyTMwwbpVFP9KtrEYvPGYI Q+GEyHem+g7XHugGNFJQz+bOAmq8BjsY5iDknbn3W6Ehc6FH1A+Q716gvA1GDDED6Usb4YA1r tQ7NO5dPOdYUh3VmyfAbL2imvQpv/UUO3wTr7pxOwe76/tDgdvKtqFjkBCcHPglfr9BO32sWi ZGVu1pSr1xAffWolRJKD0wMUgMI3E9X7yHBSV+D679zAyAz4xL6xTze6YQotINqhrUopCSJ Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=217.72.192.75; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/27 15:20:36 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Riku Voipio , Laurent Vivier , Filip Bozuta Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Filip Bozuta This patch implements strace argument printing functionality for following = syscalls: * clock_getres, clock_gettime, clock_settime - clock and time functions int clock_getres(clockid_t clockid, struct timespec *res) int clock_gettime(clockid_t clockid, struct timespec *tp) int clock_settime(clockid_t clockid, const struct timespec *tp) man page: https://man7.org/linux/man-pages/man2/clock_getres.2.html * gettimeofday - get time int gettimeofday(struct timeval *tv, struct timezone *tz) man page: https://man7.org/linux/man-pages/man2/gettimeofday.2.html * getitimer, setitimer - get or set value of an interval timer int getitimer(int which, struct itimerval *curr_value) int setitimer(int which, const struct itimerval *new_value, struct itimerval *old_value) man page: https://man7.org/linux/man-pages/man2/getitimer.2.html Implementation notes: All of the syscalls have some structue types as argument types and thus a separate printing function was stated in file "strace.list" for each of them. All of these functions use existing functions for their appropriate structure types ("print_timeval()" and "print_timezone()"). Functions "print_timespec()" and "print_itimerval()" were added in this patch so that they can be used to print types "struct timespec" and "struct itimerval" used by some of the syscalls. Function "print_itimer= val()" uses the existing function "print_timeval()" to print fields of the structure "struct itimerval" that are of type "struct timeval". Function "print_enums()", which was introduced in the previous patch, i= s used to print the interval timer type which is the first argument of "getiti= mer()" and "setitimer()". Also, this function is used to print the clock id wh= ich is the first argument of "clock_getres()" and "clock_gettime()". For th= at reason, the existing function "print_clockid()" was removed in this pat= ch. Existing function "print_clock_adjtime()" was also changed for this rea= son to use "print_enums()". The existing function "print_timeval()" was changed a little so that it prints the field names beside the values. Syscalls "clock_getres()" and "clock_gettime()" have the same number and types of arguments and thus their print functions "print_clock_getr= es" and "print_clock_gettime" share a common definition in file "strace.c". Signed-off-by: Filip Bozuta Reviewed-by: Laurent Vivier Message-Id: <20200811164553.27713-6-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier --- linux-user/strace.c | 287 +++++++++++++++++++++++++++++++---------- linux-user/strace.list | 17 ++- 2 files changed, 232 insertions(+), 72 deletions(-) diff --git a/linux-user/strace.c b/linux-user/strace.c index d0731b888d29..c7ef948b9451 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -78,7 +78,9 @@ UNUSED static void print_string(abi_long, int); UNUSED static void print_buf(abi_long addr, abi_long len, int last); UNUSED static void print_raw_param(const char *, abi_long, int); UNUSED static void print_timeval(abi_ulong, int); +UNUSED static void print_timespec(abi_ulong, int); UNUSED static void print_timezone(abi_ulong, int); +UNUSED static void print_itimerval(abi_ulong, int); UNUSED static void print_number(abi_long, int); UNUSED static void print_signal(abi_ulong, int); UNUSED static void print_sockaddr(abi_ulong, abi_long, int); @@ -582,69 +584,6 @@ print_fdset(int n, abi_ulong target_fds_addr) } #endif =20 -#ifdef TARGET_NR_clock_adjtime -/* IDs of the various system clocks */ -#define TARGET_CLOCK_REALTIME 0 -#define TARGET_CLOCK_MONOTONIC 1 -#define TARGET_CLOCK_PROCESS_CPUTIME_ID 2 -#define TARGET_CLOCK_THREAD_CPUTIME_ID 3 -#define TARGET_CLOCK_MONOTONIC_RAW 4 -#define TARGET_CLOCK_REALTIME_COARSE 5 -#define TARGET_CLOCK_MONOTONIC_COARSE 6 -#define TARGET_CLOCK_BOOTTIME 7 -#define TARGET_CLOCK_REALTIME_ALARM 8 -#define TARGET_CLOCK_BOOTTIME_ALARM 9 -#define TARGET_CLOCK_SGI_CYCLE 10 -#define TARGET_CLOCK_TAI 11 - -static void -print_clockid(int clockid, int last) -{ - switch (clockid) { - case TARGET_CLOCK_REALTIME: - qemu_log("CLOCK_REALTIME"); - break; - case TARGET_CLOCK_MONOTONIC: - qemu_log("CLOCK_MONOTONIC"); - break; - case TARGET_CLOCK_PROCESS_CPUTIME_ID: - qemu_log("CLOCK_PROCESS_CPUTIME_ID"); - break; - case TARGET_CLOCK_THREAD_CPUTIME_ID: - qemu_log("CLOCK_THREAD_CPUTIME_ID"); - break; - case TARGET_CLOCK_MONOTONIC_RAW: - qemu_log("CLOCK_MONOTONIC_RAW"); - break; - case TARGET_CLOCK_REALTIME_COARSE: - qemu_log("CLOCK_REALTIME_COARSE"); - break; - case TARGET_CLOCK_MONOTONIC_COARSE: - qemu_log("CLOCK_MONOTONIC_COARSE"); - break; - case TARGET_CLOCK_BOOTTIME: - qemu_log("CLOCK_BOOTTIME"); - break; - case TARGET_CLOCK_REALTIME_ALARM: - qemu_log("CLOCK_REALTIME_ALARM"); - break; - case TARGET_CLOCK_BOOTTIME_ALARM: - qemu_log("CLOCK_BOOTTIME_ALARM"); - break; - case TARGET_CLOCK_SGI_CYCLE: - qemu_log("CLOCK_SGI_CYCLE"); - break; - case TARGET_CLOCK_TAI: - qemu_log("CLOCK_TAI"); - break; - default: - qemu_log("%d", clockid); - break; - } - qemu_log("%s", get_comma(last)); -} -#endif - /* * Sysycall specific output functions */ @@ -843,6 +782,81 @@ print_syscall_ret_adjtimex(void *cpu_env, const struct= syscallname *name, } #endif =20 +#if defined(TARGET_NR_clock_gettime) || defined(TARGET_NR_clock_getres) +static void +print_syscall_ret_clock_gettime(void *cpu_env, const struct syscallname *n= ame, + abi_long ret, abi_long arg0, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg= 4, + abi_long arg5) +{ + if (!print_syscall_err(ret)) { + qemu_log(TARGET_ABI_FMT_ld, ret); + qemu_log(" ("); + print_timespec(arg1, 1); + qemu_log(")"); + } + + qemu_log("\n"); +} +#define print_syscall_ret_clock_getres print_syscall_ret_clock_gettime +#endif + +#ifdef TARGET_NR_gettimeofday +static void +print_syscall_ret_gettimeofday(void *cpu_env, const struct syscallname *na= me, + abi_long ret, abi_long arg0, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5) +{ + if (!print_syscall_err(ret)) { + qemu_log(TARGET_ABI_FMT_ld, ret); + qemu_log(" ("); + print_timeval(arg0, 0); + print_timezone(arg1, 1); + qemu_log(")"); + } + + qemu_log("\n"); +} +#endif + +#ifdef TARGET_NR_getitimer +static void +print_syscall_ret_getitimer(void *cpu_env, const struct syscallname *name, + abi_long ret, abi_long arg0, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5) +{ + if (!print_syscall_err(ret)) { + qemu_log(TARGET_ABI_FMT_ld, ret); + qemu_log(" ("); + print_itimerval(arg1, 1); + qemu_log(")"); + } + + qemu_log("\n"); +} +#endif + + +#ifdef TARGET_NR_getitimer +static void +print_syscall_ret_setitimer(void *cpu_env, const struct syscallname *name, + abi_long ret, abi_long arg0, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5) +{ + if (!print_syscall_err(ret)) { + qemu_log(TARGET_ABI_FMT_ld, ret); + qemu_log(" (old_value =3D "); + print_itimerval(arg2, 1); + qemu_log(")"); + } + + qemu_log("\n"); +} +#endif + #if defined(TARGET_NR_listxattr) || defined(TARGET_NR_llistxattr) \ || defined(TARGGET_NR_flistxattr) static void @@ -1221,6 +1235,43 @@ UNUSED static struct flags mlockall_flags[] =3D { FLAG_END, }; =20 +/* IDs of the various system clocks */ +#define TARGET_CLOCK_REALTIME 0 +#define TARGET_CLOCK_MONOTONIC 1 +#define TARGET_CLOCK_PROCESS_CPUTIME_ID 2 +#define TARGET_CLOCK_THREAD_CPUTIME_ID 3 +#define TARGET_CLOCK_MONOTONIC_RAW 4 +#define TARGET_CLOCK_REALTIME_COARSE 5 +#define TARGET_CLOCK_MONOTONIC_COARSE 6 +#define TARGET_CLOCK_BOOTTIME 7 +#define TARGET_CLOCK_REALTIME_ALARM 8 +#define TARGET_CLOCK_BOOTTIME_ALARM 9 +#define TARGET_CLOCK_SGI_CYCLE 10 +#define TARGET_CLOCK_TAI 11 + +UNUSED static struct enums clockids[] =3D { + ENUM_TARGET(CLOCK_REALTIME), + ENUM_TARGET(CLOCK_MONOTONIC), + ENUM_TARGET(CLOCK_PROCESS_CPUTIME_ID), + ENUM_TARGET(CLOCK_THREAD_CPUTIME_ID), + ENUM_TARGET(CLOCK_MONOTONIC_RAW), + ENUM_TARGET(CLOCK_REALTIME_COARSE), + ENUM_TARGET(CLOCK_MONOTONIC_COARSE), + ENUM_TARGET(CLOCK_BOOTTIME), + ENUM_TARGET(CLOCK_REALTIME_ALARM), + ENUM_TARGET(CLOCK_BOOTTIME_ALARM), + ENUM_TARGET(CLOCK_SGI_CYCLE), + ENUM_TARGET(CLOCK_TAI), + ENUM_END, +}; + +UNUSED static struct enums itimer_types[] =3D { + ENUM_GENERIC(ITIMER_REAL), + ENUM_GENERIC(ITIMER_VIRTUAL), + ENUM_GENERIC(ITIMER_PROF), + ENUM_END, +}; + /* * print_xxx utility functions. These are used to print syscall * parameters in certain format. All of these have parameter @@ -1439,13 +1490,34 @@ print_timeval(abi_ulong tv_addr, int last) print_pointer(tv_addr, last); return; } - qemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s", - tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last)); + qemu_log("{tv_sec =3D " TARGET_ABI_FMT_ld + ",tv_usec =3D " TARGET_ABI_FMT_ld "}%s", + tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last= )); unlock_user(tv, tv_addr, 0); } else qemu_log("NULL%s", get_comma(last)); } =20 +static void +print_timespec(abi_ulong ts_addr, int last) +{ + if (ts_addr) { + struct target_timespec *ts; + + ts =3D lock_user(VERIFY_READ, ts_addr, sizeof(*ts), 1); + if (!ts) { + print_pointer(ts_addr, last); + return; + } + qemu_log("{tv_sec =3D " TARGET_ABI_FMT_ld + ",tv_nsec =3D " TARGET_ABI_FMT_ld "}%s", + tswapal(ts->tv_sec), tswapal(ts->tv_nsec), get_comma(last= )); + unlock_user(ts, ts_addr, 0); + } else { + qemu_log("NULL%s", get_comma(last)); + } +} + static void print_timezone(abi_ulong tz_addr, int last) { @@ -1465,6 +1537,22 @@ print_timezone(abi_ulong tz_addr, int last) } } =20 +static void +print_itimerval(abi_ulong it_addr, int last) +{ + if (it_addr) { + qemu_log("{it_interval=3D"); + print_timeval(it_addr + + offsetof(struct target_itimerval, it_interval), 0); + qemu_log("it_value=3D"); + print_timeval(it_addr + + offsetof(struct target_itimerval, it_value), 0); + qemu_log("}%s", get_comma(last)); + } else { + qemu_log("NULL%s", get_comma(last)); + } +} + #undef UNUSED =20 #ifdef TARGET_NR_accept @@ -1577,7 +1665,7 @@ print_clock_adjtime(void *cpu_env, const struct sysca= llname *name, abi_long arg3, abi_long arg4, abi_long arg5) { print_syscall_prologue(name); - print_clockid(arg0, 0); + print_enums(clockids, arg0, 0); print_pointer(arg1, 1); print_syscall_epilogue(name); } @@ -1907,6 +1995,19 @@ print_futimesat(void *cpu_env, const struct syscalln= ame *name, } #endif =20 +#ifdef TARGET_NR_gettimeofday +static void +print_gettimeofday(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_pointer(arg0, 0); + print_pointer(arg1, 1); + print_syscall_epilogue(name); +} +#endif + #ifdef TARGET_NR_settimeofday static void print_settimeofday(void *cpu_env, const struct syscallname *name, @@ -1920,6 +2021,60 @@ print_settimeofday(void *cpu_env, const struct sysca= llname *name, } #endif =20 +#if defined(TARGET_NR_clock_gettime) || defined(TARGET_NR_clock_getres) +static void +print_clock_gettime(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(clockids, arg0, 0); + print_pointer(arg1, 1); + print_syscall_epilogue(name); +} +#define print_clock_getres print_clock_gettime +#endif + +#ifdef TARGET_NR_clock_settime +static void +print_clock_settime(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(clockids, arg0, 0); + print_timespec(arg1, 1); + print_syscall_epilogue(name); +} +#endif + +#ifdef TARGET_NR_getitimer +static void +print_getitimer(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(itimer_types, arg0, 0); + print_pointer(arg1, 1); + print_syscall_epilogue(name); +} +#endif + +#ifdef TARGET_NR_setitimer +static void +print_setitimer(void *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(itimer_types, arg0, 0); + print_itimerval(arg1, 0); + print_pointer(arg2, 1); + print_syscall_epilogue(name); +} +#endif + #ifdef TARGET_NR_link static void print_link(void *cpu_env, const struct syscallname *name, diff --git a/linux-user/strace.list b/linux-user/strace.list index d0ea7f3464b8..084048ab96dd 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -83,16 +83,18 @@ { TARGET_NR_clock_adjtime, "clock_adjtime" , NULL, print_clock_adjtime, NU= LL }, #endif #ifdef TARGET_NR_clock_getres -{ TARGET_NR_clock_getres, "clock_getres" , NULL, NULL, NULL }, +{ TARGET_NR_clock_getres, "clock_getres" , NULL, print_clock_getres, + print_syscall_ret_clock_getres }, #endif #ifdef TARGET_NR_clock_gettime -{ TARGET_NR_clock_gettime, "clock_gettime" , NULL, NULL, NULL }, +{ TARGET_NR_clock_gettime, "clock_gettime" , NULL, print_clock_gettime, + print_syscall_ret_clock_gettime }, #endif #ifdef TARGET_NR_clock_nanosleep { TARGET_NR_clock_nanosleep, "clock_nanosleep" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_clock_settime -{ TARGET_NR_clock_settime, "clock_settime" , NULL, NULL, NULL }, +{ TARGET_NR_clock_settime, "clock_settime" , NULL, print_clock_settime, NU= LL }, #endif #ifdef TARGET_NR_clone { TARGET_NR_clone, "clone" , NULL, print_clone, NULL }, @@ -315,7 +317,8 @@ { TARGET_NR_gethostname, "gethostname" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_getitimer -{ TARGET_NR_getitimer, "getitimer" , NULL, NULL, NULL }, +{ TARGET_NR_getitimer, "getitimer" , NULL, print_getitimer, + print_syscall_ret_getitimer }, #endif #ifdef TARGET_NR_get_kernel_syms { TARGET_NR_get_kernel_syms, "get_kernel_syms" , NULL, NULL, NULL }, @@ -388,7 +391,8 @@ { TARGET_NR_gettid, "gettid" , "%s()", NULL, NULL }, #endif #ifdef TARGET_NR_gettimeofday -{ TARGET_NR_gettimeofday, "gettimeofday" , NULL, NULL, NULL }, +{ TARGET_NR_gettimeofday, "gettimeofday" , NULL, print_gettimeofday, + print_syscall_ret_gettimeofday }, #endif #ifdef TARGET_NR_getuid { TARGET_NR_getuid, "getuid" , "%s()", NULL, NULL }, @@ -1291,7 +1295,8 @@ { TARGET_NR_sethostname, "sethostname" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_setitimer -{ TARGET_NR_setitimer, "setitimer" , NULL, NULL, NULL }, +{ TARGET_NR_setitimer, "setitimer" , NULL, print_setitimer, + print_syscall_ret_setitimer }, #endif #ifdef TARGET_NR_set_mempolicy { TARGET_NR_set_mempolicy, "set_mempolicy" , NULL, NULL, NULL }, --=20 2.26.2