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* linux-user: Lock log around straceRichard Henderson2022-09-271-19/+46
| | | | | | | | | Do not allow syscall arguments to be interleaved between threads. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220829021006.67305-8-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Update print_futex_opRichard Henderson2022-09-271-37/+33Star
| | | | | | | | | | | Use a table for the names; print unknown values in hex, since the value contains flags. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220829021006.67305-7-richard.henderson@linaro.org> [lv: update print_futex() according to "linux-user: Show timespec on strace for futex()"] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Implement stracing madvise()Ilya Leoshkevich2022-09-271-0/+41
| | | | | | | | | | | | The default implementation has several problems: the first argument is not displayed as a pointer, making it harder to grep; the third argument is not symbolized; and there are several extra unused arguments. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220906000839.1672934-4-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Show timespec on strace for futex()Helge Deller2022-09-271-1/+10
| | | | | | | Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-11-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace for clock_nanosleep()Helge Deller2022-09-271-0/+15
| | | | | | | Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-10-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Fix strace of chmod() if mode == 0Helge Deller2022-09-271-0/+5
| | | | | | | | | | | | | | If the mode parameter of chmod() is zero, this value isn't shown when stracing a program: chmod("filename",) This patch fixes it up to show the zero-value as well: chmod("filename",000) Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220918194555.83535-8-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add pidfd_open(), pidfd_send_signal() and pidfd_getfd() syscallsHelge Deller2022-09-271-0/+28
| | | | | | | | | | I noticed those were missing when running the glib2.0 testsuite. Add the syscalls including the strace output. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-4-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add missing clock_gettime64() syscall straceHelge Deller2022-09-271-0/+53
| | | | | | | | | | | Allow linux-user to strace the clock_gettime64() syscall. This syscall is used a lot on 32-bit guest architectures which use newer glibc versions. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-3-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add missing signals in strace outputHelge Deller2022-09-271-19/+11Star
| | | | | | | | | | | | | | | | | | Some of the guest signal numbers are currently not converted to their representative names in the strace output, e.g. SIGVTALRM. This patch introduces a smart way to generate and keep in sync the host-to-guest and guest-to-host signal conversion tables for usage in the qemu signal and strace code. This ensures that any signals will now show up in both tables. There is no functional change in this patch - with the exception that yet missing signal names now show up in the strace code too. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-2-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Use is_error in print_syscall_errRichard Henderson2022-06-021-1/+1
| | | | | | | | | Errors are not all negative numbers: use is_error. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-16-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Have do_syscall() use CPUArchState* instead of void*Philippe Mathieu-Daudé2022-05-231-101/+101
| | | | | | | Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-3-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split linux-user internals out of qemu.hPeter Maydell2021-09-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | qemu.h is included in various non-linux-user files (which mostly want the TaskState struct and the functions for doing usermode access to guest addresses like lock_user(), unlock_user(), get_user*(), etc). Split out the parts that are only used in linux-user itself into a new user-internals.h. This leaves qemu.h with basically three things: * the definition of the TaskState struct * the user-access functions and macros * do_brk() all of which are needed by code outside linux-user that includes qemu.h. The addition of all the extra #include lines was done with sed -i '/include.*qemu\.h/a #include "user-internals.h"' $(git grep -l 'include.*qemu\.h' linux-user) (and then undoing the change to fpa11.h). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-8-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split strace prototypes into strace.hPeter Maydell2021-09-131-0/+2
| | | | | | | | | | | | The functions implemented in strace.c are only used in a few files in linux-user; split them out of qemu.h and into a new strace.h header which we include in the places that need it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-3-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of llseekKito Cheng2021-05-151-1/+2
| | | | | | | | | | Some target are using llseek instead of _llseek like riscv, nios2, hexagon, and openrisc. Signed-off-by: Kito Cheng <kito.cheng@sifive.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210512101358.122781-1-kito.cheng@sifive.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: strace now handles unshare syscall args correctlyMatus Kysel2021-05-151-0/+18
| | | | | | | | | | Syscall unshare did not have custom print function for strace, but it's argument is same as flags in clone syscall, so it can be easily implemented. Also updated missing flags from clone_flags. Signed-off-by: Matus Kysel <mkysel@tachyum.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210406144203.1020598-1-mkysel@tachyum.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add IPv6 options to do_print_sockopt()Shu-Chun Weng2021-01-211-0/+109
| | | | | | | | Signed-off-by: Shu-Chun Weng <scw@google.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20201218193213.3566856-5-scw@google.com> [lv: Add missing <linux/in6.h> include for IPV6_ADDR_PREFERENCES] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: add missing UDP get/setsockopt optionShu-Chun Weng2021-01-201-0/+6
| | | | | | | | | | SOL_UDP manipulate options at UDP level. All six options currently defined in linux source include/uapi/linux/udp.h take integer values. Signed-off-by: Shu-Chun Weng <scw@google.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20201218193213.3566856-3-scw@google.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Support F_ADD_SEALS and F_GET_SEALS fcntlsShu-Chun Weng2021-01-201-7/+32
| | | | | | | | | Also reorder blocks so that they are all in the same order everywhere. Signed-off-by: Shu-Chun Weng <scw@google.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20201218193213.3566856-2-scw@google.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: remove GNUC checkMarc-André Lureau2020-12-151-4/+0Star
| | | | | | | | | | QEMU requires Clang or GCC, that define and support __GNUC__ extensions. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20201210134752.780923-13-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Add strace support for printing OFD fcntl operationsMike Gelfand2020-09-011-0/+12
| | | | | | | Signed-off-by: Mike Gelfand <mikedld@mikedld.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200830092242.31506-1-mikedld@mikedld.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments for ioctls used for ↵Filip Bozuta2020-08-271-0/+195
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | terminals and serial lines Functions "print_ioctl()" and "print_syscall_ret_ioctl()" are used to print arguments of "ioctl()" with "-strace". These functions use "thunk_print()", which is defined in "thunk.c", to print the contents of ioctl's third arguments that are not basic types. However, this function doesn't handle ioctls of group ioctl_tty which are used for terminals and serial lines. These ioctls use a type "struct termios" which thunk type is defined in a non standard way using "STRUCT_SPECIAL()". This means that this type is not decoded regularly using "thunk_convert()" and uses special converting functions "target_to_host_termios()" and "host_to_target_termios()", which are defined in "syscall.c" to decode it's values. For simillar reasons, this type is also not printed regularly using "thunk_print()". That is the reason why a separate printing function "print_termios()" is defined in file "strace.c". This function decodes and prints flag values of the "termios" structure. Implementation notes: Function "print_termios()" was implemented in "strace.c" using an existing function "print_flags()" to print flag values of "struct termios" fields. Also, recently implemented function "print_enums()" was also used to print enumareted values which are contained in the fields of 'struct termios'. These flag values were defined using an existing macro "FLAG_TARGET()" that generates aproppriate target flag values and string representations of these flags. Also, the recently defined macro "ENUM_TARGET()" was used to generate aproppriate enumarated values and their respective string representations. Function "print_termios()" was declared in "qemu.h" so that it can be accessed in "syscall.c". Type "StructEntry" defined in "exec/user/thunk.h" contains information that is used to decode structure values. Field "void print(void *arg)" was added in this structure as a special print function. Also, function "thunk_print()" was changed a little so that it uses this special print function in case it is defined. This printing function was instantiated with the defined "print_termios()" in "syscall.c" in "struct_termios_def". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200723210233.349690-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of some clock and time ↵Filip Bozuta2020-08-271-66/+221
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | functions 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_itimerval()" 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, is used to print the interval timer type which is the first argument of "getitimer()" and "setitimer()". Also, this function is used to print the clock id which is the first argument of "clock_getres()" and "clock_gettime()". For that reason, the existing function "print_clockid()" was removed in this patch. Existing function "print_clock_adjtime()" was also changed for this reason 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_getres" and "print_clock_gettime" share a common definition in file "strace.c". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-6-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add an api to print enumareted argument values with straceFilip Bozuta2020-08-271-0/+31
| | | | | | | | | | | | | | | | | | | | This patch introduces a type 'struct enums' and function 'print_enums()' that can be used to print enumerated argument values of some syscalls in strace. This can be used in future strace implementations. Also, macros 'ENUM_GENERIC()', 'ENUM_TARGET()' and 'ENUM_END', are introduced to enable automatic generation of aproppriate enumarated values and their repsective string representations (these macros are exactly the same as 'FLAG_GENERIC()', 'FLAG_TARGET()' and 'FLAG_END'). Future patches are planned to modify all existing print functions in 'strace.c' that print arguments of syscalls with enumerated values to use this new api. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-5-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of syscalls used to ↵Filip Bozuta2020-08-271-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lock and unlock memory This patch implements strace argument printing functionality for following syscalls: * mlock, munlock, mlockall, munlockall - lock and unlock memory int mlock(const void *addr, size_t len) int munlock(const void *addr, size_t len) int mlockall(int flags) int munlockall(void) man page: https://man7.org/linux/man-pages/man2/mlock.2.html Implementation notes: Syscall mlockall() takes an argument that is composed of predefined values which represent flags that determine the type of locking operation that is to be performed. For that reason, a printing function "print_mlockall" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print the "flags" argument. These flags are stated inside an array "mlockall_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_TARGET()" that crates aproppriate target flag values based on those defined in files '/target_syscall.h'. These target flag values were changed from "TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" was added in this patch. This value was also added in "syscall.c" in function "target_to_host_mlockall_arg()". Because this flag value was added in kernel version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and in "strace.c") as to support older kernel versions. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Syscall mlock2() is not implemented in "syscall.c" and thus it's argument printing is not implemented in this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of ↵Filip Bozuta2020-08-271-0/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | truncate()/ftruncate() and getsid() This patch implements strace argument printing functionality for following syscalls: * truncate, ftruncate - truncate a file to a specified length int truncate/truncate64(const char *path, off_t length) int ftruncate/ftruncate64(int fd, off_t length) man page: https://man7.org/linux/man-pages/man2/truncate.2.html * getsid - get session ID pid_t getsid(pid_t pid) man page: https://man7.org/linux/man-pages/man2/getsid.2.html Implementation notes: Syscalls truncate/truncate64 take string argument types and thus a separate print function "print_truncate/print_truncate64" is stated in file "strace.list". This function is defined and implemented in "strace.c" by using an existing function used to print string arguments: "print_string()". For syscall ftruncate64, a separate printing function was also stated in "strace.c" as it requires a special kind of handling. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Function "regpairs_aligned()" was cut & pasted from "syscall.c" to "qemu.h" as it is used by functions "print_truncate64()" and "print_ftruncate64()" to print the offset arguments of "truncate64()" and "ftruncate64()". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-3-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Make cpu_env accessible in strace.cFilip Bozuta2020-08-271-237/+242
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Variable "cpu_env" is used in file "syscall.c" to store the information about the cpu environment. This variable is used because values of some syscalls can vary between cpu architectures. This patch makes the "cpu_env" accessible in "strace.c" so it can enable aproppriate "-strace" argument printing for these syscalls. This will be a useful addition for future "-strace" implementation in QEMU. Implementation notes: Functions "print_syscall()" and "print_syscall_ret()" which are stated and defined in "qemu.h" and "strace.c" respectively are used to print syscall arguments before and after syscall execution. These functions were changed with addition of a new argument "void *cpu_env". Strucute "struct syscallname" in "strace.c" is used to store the information about syscalls. Fields "call" and "result" represent pointers to functions which are used to print syscall arguments before and after execution. These fields were also changed with addition of a new "void *" argumetn. Also, all defined "print_*" and "print_syscall_ret*" functions in "strace.c" were changed to have the new "void *cpu_env". This was done to not cause build errors (even though none of these functions use this argument). Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-2-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Fix "print_fdset()" in "strace.c" to not print ", " after last valueFilip Bozuta2020-08-231-2/+6
| | | | | | | | | | | | | | | | | | | | Function "print_fdset()" in "strace.c" is used to print the file descriptor values in "print__newselect()" which prints arguments of syscall _newselect(). Until changes from this patch, this function was printing "," even after the last value of the fd_set argument. This was changed in this patch by removing this unnecessary "," after the last fd value and thus improving the estetics of the _newselect() "-strace" print. Implementation notes: The printing fix was made possible by using an existing function "get_comma()" which returns a "," or an empty string "" based on its argument (0 for "," and other for ""). Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200702160915.9517-1-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: fix print_syscall_err() when syscall returned value is negativeLaurent Vivier2020-07-141-23/+13Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | print_syscall_err() relies on the sign of the returned value to know if it is an errno value or not. But in some cases the returned value can have the most signicant bit set without being an errno. This patch restores previous behaviour that was also checking if we can decode the errno to validate it. This patch fixes this kind of problem (qemu-m68k): root@sid:/# QEMU_STRACE= ls 3 brk(NULL) = -1 errno=21473607683 uname(0x407fff8a) = 0 to become: root@sid:/# QEMU_STRACE= ls 3 brk(NULL) = 0x8001e000 3 uname(0xffffdf8a) = 0 Fixes: c84be71f6854 ("linux-user: Extend strace support to enable argument printing after syscall execution") Cc: Filip.Bozuta@syrmia.com Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200708152435.706070-3-laurent@vivier.eu>
* linux-user: fix the errno value in print_syscall_err()Laurent Vivier2020-07-141-1/+1
| | | | | | | | | | | | | | | | | errno of the target is returned as a negative value by the syscall, not in the host errno variable. The emulation of the target syscall can return an error while the host doesn't set an errno value. Target errnos and host errnos can also differ in some cases. Fixes: c84be71f6854 ("linux-user: Extend strace support to enable argument printing after syscall execution") Cc: Filip.Bozuta@syrmia.com Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Message-Id: <20200708152435.706070-2-laurent@vivier.eu>
* linux-user: Fix Coverity CID 1430271 / CID 1430272Laurent Vivier2020-07-131-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In new functions print_ioctl() and print_syscall_ret_ioctl(), we don't check if lock_user() returns NULL and this would cause a segfault in thunk_print(). If lock_user() returns NULL don't call thunk_print() but prints only the value of the (invalid) pointer. Tested with: # cat ioctl.c #include <unistd.h> #include <sys/ioctl.h> int main(void) { int ret; ret = ioctl(STDOUT_FILENO, TCGETS, 0xdeadbeef); ret = ioctl(STDOUT_FILENO, TCSETSF, 0xdeadbeef); return 0; } # QEMU_STRACE= ./ioctl ... 578 ioctl(1,TCGETS,0xdeadbeef) = -1 errno=2 (Bad address) 578 ioctl(1,TCSETSF,0xdeadbeef) = -1 errno=2 (Bad address) ... # QEMU_STRACE= passwd ... 623 ioctl(0,TCGETS,0x3fffed04) = 0 ({}) 623 ioctl(0,TCSETSF,{}) = 0 ... Reported-by: Peter Maydell <peter.maydell@linaro.org> Fixes: 79482e5987c8 ("linux-user: Add strace support for printing arguments of ioctl()") Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: Add strace support for printing arguments of ioctl()Filip Bozuta2020-07-041-0/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements functionality for strace argument printing for ioctls. When running ioctls through qemu with "-strace", they get printed in format: "ioctl(fd_num,0x*,0x*) = ret_value" where the request code an the ioctl's third argument get printed in a hexadicemal format. This patch changes that by enabling strace to print both the request code name and the contents of the third argument. For example, when running ioctl RTC_SET_TIME with "-strace", with changes from this patch, it gets printed in this way: "ioctl(3,RTC_SET_TIME,{12,13,15,20,10,119,0,0,0}) = 0" In case of IOC_R type ioctls, the contents of the third argument get printed after the return value, and the argument inside the ioctl call gets printed as pointer in hexadecimal format. For example, when running RTC_RD_TIME with "-strace", with changes from this patch, it gets printed in this way: "ioctl(3,RTC_RD_TIME,0x40800374) = 0 ({22,9,13,11,5,120,0,0,0})" In case of IOC_RW type ioctls, the contents of the third argument get printed both inside the ioctl call and after the return value. Implementation notes: Functions "print_ioctl()" and "print_syscall_ret_ioctl()", that are defined in "strace.c", are listed in file "strace.list" as "call" and "result" value for ioctl. Structure definition "IOCTLEntry" as well as predefined values for IOC_R, IOC_W and IOC_RW were cut and pasted from file "syscall.c" to file "qemu.h" so that they can be used by these functions to print the contents of the third ioctl argument. Also, the "static" identifier for array "ioctl_entries[]" was removed and this array was declared as "extern" in "qemu.h" so that it can also be used by these functions. To decode the structure type of the ioctl third argument, function "thunk_print()" was defined in file "thunk.c" and its definition is somewhat simillar to that of function "thunk_convert()". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619124727.18080-3-filip.bozuta@syrmia.com> [lv: fix close-bracket] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of fallocate()Filip Bozuta2020-06-291-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements strace argument printing functionality for following syscall: *fallocate - manipulate file space int fallocate(int fd, int mode, off_t offset, off_t len) man page: https://www.man7.org/linux/man-pages/man2/fallocate.2.html Implementation notes: This syscall's second argument "mode" is composed of predefined values which represent flags that determine the type of operation that is to be performed on the file space. For that reason, a printing function "print_fallocate" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print flags of the "mode" argument. These flags are stated inside an array "falloc_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_GENERIC()". Most of these flags are defined after kernel version 3.0 which is why they are enwrapped in an #ifdef directive. The syscall's third ant fourth argument are of type "off_t" which can cause variations between 32/64-bit architectures. To handle this variation, function "target_offset64()" was copied from file "strace.c" and used in "print_fallocate" to print "off_t" arguments for 32-bit architectures. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-7-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of chown()/lchown()Filip Bozuta2020-06-291-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | This patch implements strace argument printing functionality for syscalls: *chown, lchown - change ownership of a file int chown(const char *pathname, uid_t owner, gid_t group) int lchown(const char *pathname, uid_t owner, gid_t group) man page: https://www.man7.org/linux/man-pages/man2/lchown.2.html Implementation notes: Both syscalls use strings as arguments and thus a separate printing function was stated in "strace.list" for them. Both syscalls share the same number and types of arguments and thus share a same definition in file "syscall.c". This defintion uses existing functions "print_string()" to print the string argument and "print_raw_param()" to print other two arguments that are of basic types. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-6-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of lseek()Filip Bozuta2020-06-291-0/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements strace argument printing functionality for syscall: *lseek - reposition read/write file offset off_t lseek(int fd, off_t offset, int whence) man page: https://www.man7.org/linux/man-pages/man2/lseek.2.html Implementation notes: The syscall's third argument "whence" has predefined values: "SEEK_SET","SEEK_CUR","SEEK_END","SEEK_DATA","SEEK_HOLE" and thus a separate printing function "print_lseek" was stated in file "strace.list". This function is defined in "strace.c" by using an existing function "print_raw_param()" to print the first and second argument and a switch(case) statement for the predefined values of the third argument. Values "SEEK_DATA" and "SEEK_HOLE" are defined in kernel version 3.1. That is the reason why case statements for these values are enwrapped in #ifdef directive. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-5-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing argument of syscalls used for ↵Filip Bozuta2020-06-291-0/+121
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | extended attributes This patch implements strace argument printing functionality for following syscalls: *getxattr, lgetxattr, fgetxattr - retrieve an extended attribute value ssize_t getxattr(const char *path, const char *name, void *value, size_t size) ssize_t lgetxattr(const char *path, const char *name, void *value, size_t size) ssize_t fgetxattr(int fd, const char *name, void *value, size_t size) man page: https://www.man7.org/linux/man-pages/man2/getxattr.2.html *listxattr, llistxattr, flistxattr - list extended attribute names ssize_t listxattr(const char *path, char *list, size_t size) ssize_t llistxattr(const char *path, char *list, size_t size) ssize_t flistxattr(int fd, char *list, size_t size) man page: https://www.man7.org/linux/man-pages/man2/listxattr.2.html *removexattr, lremovexattr, fremovexattr - remove an extended attribute int removexattr(const char *path, const char *name) int lremovexattr(const char *path, const char *name) int fremovexattr(int fd, const char *name) man page: https://www.man7.org/linux/man-pages/man2/removexattr.2.html Implementation notes: All of the syscalls have strings as argument types and thus a separate printing function was stated in file "strace.list" for every one of them. All of these printing functions were defined in "strace.c" using existing printing functions for appropriate argument types: "print_string()" - for (const char*) type "print_pointer()" - for (char*) and (void *) type "print_raw_param()" for (int) and (size_t) type Syscalls "getxattr()" and "lgetxattr()" have the same number and type of arguments and thus their print functions ("print_getxattr", "print_lgetxattr") share a same definition. The same statement applies to syscalls "listxattr()" and "llistxattr()". Function "print_syscall_ret_listxattr()" was added to print the returned list of extended attributes for syscalls "print_listxattr(), print_llistxattr() and print_flistxattr()". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-4-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for a group of syscallsFilip Bozuta2020-06-291-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements strace argument printing functionality for following syscalls: *acct - switch process accounting on or off int acct(const char *filename) man page: https://www.man7.org/linux/man-pages/man2/acct.2.html *fsync, fdatasync - synchronize a file's in-core state with storage device int fsync(int fd) int fdatasync(int fd) man page: https://www.man7.org/linux/man-pages/man2/fsync.2.html *listen - listen for connections on a socket int listen(int sockfd, int backlog) man page: https://www.man7.org/linux/man-pages/man2/listen.2.html Implementation notes: Syscall acct() takes string as its only argument and thus a separate print function "print_acct" is stated in file "strace.list". This function is defined and implemented in "strace.c" by using an existing function used to print string arguments: "print_string()". All the other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-3-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Extend strace support to enable argument printing after syscall ↵Filip Bozuta2020-06-291-53/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | execution Structure "struct syscallname" in file "strace.c" is used for "-strace" to print arguments and return values of syscalls. The last field of this structure "result" represents the calling function that prints the return values. This field was extended in this patch so that this function takes all syscalls arguments beside the return value. In this way, it enables "-strace" to print arguments of syscalls that have changed after the syscall execution. This extension will be useful as there are many syscalls that return values inside their arguments (i.e. listxattr() that returns the list of extended attributes inside the "list" argument). Implementation notes: Since there are already three existing "print_syscall_ret*" functions inside "strace.c" ("print_syscall_ret_addr()", "print_syscall_ret_adjtimex()", "print_syscall_ret_newselect()"), they were changed to have all syscall arguments beside the return value. This was done so that these functions don't cause build errors (even though syscall arguments are not used in these functions). There is code repetition in these functions for checking the return value and printing the approppriate error message (this code is also located in print_syscall_ret() at the end of "strace.c"). That is the reason why a function "syscall_print_err()" was added for this code and put inside these functions. Functions "print_newselect()" and "print_syscall_ret_newselect()" were changed to use this new implemented functionality and not store the syscall argument values in separate static variables. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200619123331.17387-2-filip.bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Protect more syscallsAlistair Francis2020-03-201-0/+2
| | | | | | | | | | | | New y2038 safe 32-bit architectures (like RISC-V) don't support old syscalls with a 32-bit time_t. The kernel defines new *_time64 versions of these syscalls. Add some more #ifdefs to syscall.c in linux-user to allow us to compile without these old syscalls. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <9ffc3cc6226756895157f16622be5f6edfa2aee6.1584051142.git.alistair.francis@wdc.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: fix socket() straceLaurent Vivier2020-03-201-1/+7
| | | | | | | | | | print_socket_type() doesn't manage flags and the correct type cannot be displayed Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200312165530.53450-1-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Use `qemu_log' for straceJosh Kunz2020-02-191-236/+243
| | | | | | | | | | | | | | | | This change switches linux-user strace logging to use the newer `qemu_log` logging subsystem rather than the older `gemu_log` (notice the "g") logger. `qemu_log` has several advantages, namely that it allows logging to a file, and provides a more unified interface for configuration of logging (via the QEMU_LOG environment variable or options). This change introduces a new log mask: `LOG_STRACE` which is used for logging of user-mode strace messages. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Josh Kunz <jkz@google.com> Message-Id: <20200204025416.111409-3-jkz@google.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Let print_sockaddr() have a 'last' argumentPhilippe Mathieu-Daudé2019-10-211-5/+5
| | | | | | | | | | If the format is not the syscall last argument, a comma is append. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20191021114857.20538-9-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Improve bind() outputPhilippe Mathieu-Daudé2019-10-211-1/+14
| | | | | | | | Tested-By: Guido Günther <agx@sigxcpu.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20191021114857.20538-8-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Add print_sockfd()Philippe Mathieu-Daudé2019-10-211-7/+16
| | | | | | | | | Extract common print_sockfd() from various socket related syscalls. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20191021114857.20538-7-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Dump AF_NETLINK sockaddr contentPhilippe Mathieu-Daudé2019-10-211-0/+37
| | | | | | | | Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-By: Guido Günther <agx@sigxcpu.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20191021114857.20538-6-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Improve settimeofday()Philippe Mathieu-Daudé2019-10-211-0/+13
| | | | | | | | Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-By: Guido Günther <agx@sigxcpu.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20191021114857.20538-4-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Add print_timezone()Philippe Mathieu-Daudé2019-10-211-0/+20
| | | | | | | | | Suggested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20191021114857.20538-3-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/strace: Display invalid pointer in print_timeval()Philippe Mathieu-Daudé2019-10-211-1/+3
| | | | | | | | Suggested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20191021114857.20538-2-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add support for strace for statx() syscallJim Wilson2019-07-021-0/+86
| | | | | | | | | | | | | | | All of the flags need to be conditional as old systems don't have statx support. Otherwise it works the same as other stat family syscalls. This requires the pending patch to add statx support. Tested on Ubuntu 16.04 (no host statx) and Ubuntu 19.04 (with host statx) using a riscv32-linux toolchain. Signed-off-by: Jim Wilson <jimw@sifive.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1561718618-20218-3-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Nicer strace output of chroot() syscallHelge Deller2019-03-071-0/+12
| | | | | | | | Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190227191115.GA20163@ls3530.dellerweb.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* avoid TABs in files that only contain a fewPaolo Bonzini2019-01-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-12-12 03:47:59 +0100