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envelope-from=Filip.Bozuta@syrmia.com; helo=EUR05-AM6-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/19 08:48:48 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -37 X-Spam_score: -3.8 X-Spam_bar: --- X-Spam_report: (-3.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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@iki.fi, laurent@vivier.eu Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Filip Bozuta This series covers strace support for printing arguments of following syscalls: *acct() *lgetxattr() *removexattr() *lchown() *fsync() *fgetxattr() *lremovexattr() *fallocate() *fdatasync() *listxattr() *fremovexattr() *listen() *llistxattr() *lseek() *getxattr() *flistxattr() *chown() The implementation details for strace support is described in this series patch commit messages. Testing method: Mini test programs were written that run these syscalls for different arguments. Those programs were compiled (sometimes using cross-compilers) for the following architectures: * Intel 64-bit (little endian) (gcc) * Power pc 32-bit (big endian) (powerpc-linux-gnu-gcc) * Power pc 64-bit (big endian) (powerpc64-linux-gnu-gcc) * Mips 32-bit (little endian) (mipsel-linux-gnu-gcc) * Mips 64-bit (little endian) (mips64el-linux-gnuabi64-gcc) The corresponding native programs were executed with strace, without using QEMU, on Intel Core i7-4790K (x86_64) host. All applicable compiled programs were in turn executed with "-strace" through QEMU and the strace printing results obtained were the same ones gotten for native execution. v2: * Added patch that extends strace support by enabling argument printing after syscall execution * Added strace support for argument printing for syscalls: removexattr(), lremovexattr(), fremovexattr() * Added "print_syscall_ret_listxattr()" that prints list of extended attributes after execution of syscalls: listxattr(), llistxattr(), flistxattr() * Corrected formats in some printing functions * Moved target_offset64() function definition from "syscall.c" to "qemu.h" v3: * Added generic function SYSCALL_RET_ERR() that checks the return value and prints the approppriate error message * Added "print_syscall_ret_llistxattr" and "print_syscall_ret_flistxattr" in strace.list for "llistxattr()" and "flistxattr()" that have same definition as "print_syscall_ret_listxattr" v4: * Changed error printing from macro SYSCALL_RET_ERR() to function print_syscall_err() * Changed while loop in "print_syscall_ret_listxattr()" to check printed bytes against size of the return value v5: * Corrected "print_newselect()" and "print_syscall_ret_newselect()" to use the new functionality to store syscall argument values * Changed while loop in "print_syscall_ret_listxattr()" to check only the size of the return value without the variable for printed bytes Filip Bozuta (6): linux-user: Extend strace support to enable argument printing after syscall execution linux-user: Add strace support for a group of syscalls linux-user: Add strace support for printing argument of syscalls used for extended attributes linux-user: Add strace support for printing arguments of lseek() linux-user: Add strace support for printing arguments of chown()/lchown() linux-user: Add strace support for printing arguments of fallocate() linux-user/qemu.h | 20 ++- linux-user/strace.c | 328 ++++++++++++++++++++++++++++++++++------- linux-user/strace.list | 37 ++--- linux-user/syscall.c | 18 +-- 4 files changed, 315 insertions(+), 88 deletions(-)