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Headers updated automatically using maint/update_copyright_years.sh
script.
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clang-15 emits an error because the `sys_func` function pointer of the sysent struct doesn't declare
an argument list:
> make[3]: Entering directory '/home/marv/devel/strace/src'
> clang -DHAVE_CONFIG_H -I./linux/x86_64 -I./linux/x86_64 -I./linux/generic -I./linux/generic -I. -I. -I../bundled/linux/arch/x86/include/uapi -I../bundled/linux/include/uapi -DIN_STRACE=1 -I./bundled/linux/arch/x86/include/uapi -I./bundled/linux/include/uapi -Wall -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wformat-security -Winit-self -Winitializer-overrides -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wundef -Wwrite-strings -Werror -Wall -g -ggdb3 -O0 -c -o libstrace_a-syscall.o `test -f 'syscall.c' || echo './'`syscall.c
> syscall.c:670:65: error: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Werror,-Wdeprecated-non-prototype]
> int res = raw(tcp) ? printargs(tcp) : tcp_sysent(tcp)->sys_func(tcp);
> ^
> syscall.c:815:39: error: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Werror,-Wdeprecated-non-prototype]
> sys_res = tcp_sysent(tcp)->sys_func(tcp);
> ^
> 2 errors generated.
* src/sysent.h (struct tcb): Add forward declaration.
(struct sysent): Use it to provide a proper prototype of sys_func field.
Resolves: https://github.com/strace/strace/pull/225
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In preparation for the forthcoming -Y/--decode-pids=comm option.
Load the content of /proc/$pid/comm to `comm', a newly introduced
member of struct tcb.
The loading is done when
A. a tcb is initialized,
B. execve or execveat is called, and
C. prctl(PR_SET_NAME,...) is called.
Limitation: this change is not enough for handling the case that
someone writes a value to /proc/$pid/comm directly.
(e.g. running echo "foo" > /proc/$pid/comm)
* src/defs.h (struct tcb): New member `comm'.
(enum pid_decoding_flags): Add PID_DECODING_COMM as a new flag.
(PROC_COMM_LEN): New macro.
(maybe_load_task_comm): New function declaration.
* src/strace.c (strip_trailing_newlines): New function.
(load_task_comm): New function loading the contents of /proc/$pid/comm
into struct tcb.comm.
(maybe_load_pid_comm): New function.
(alloctcb): Call it for initializing the `comm' member.
* src/syscall.c: Include <linux/prctl.h>.
(syscall_exiting_decode): Call maybe_load_task_comm().
* src/sysent.h (COMM_CHANGE): New macro.
* src/sysent_shorthand_defs.h (CC): Likewise.
* src/sysent_shorthand_undefs.h (CC): Undefine.
* src/linux/32/syscallent.h: Add CC flag to syscalls changing
/proc/$pid/comm.
* linux/64/syscallent.h: Likewise.
* linux/alpha/syscallent.h: Likewise.
* linux/arm/syscallent.h: Likewise.
* linux/avr32/syscallent.h: Likewise.
* linux/bfin/syscallent.h: Likewise.
* linux/hppa/syscallent.h: Likewise.
* linux/i386/syscallent.h: Likewise.
* linux/ia64/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-n64.h: Likewise.
* linux/mips/syscallent-o32.h: Likewise.
* linux/powerpc/syscallent.h: Likewise.
* linux/powerpc64/syscallent.h: Likewise.
* linux/s390/syscallent.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* linux/sparc64/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/xtensa/syscallent.h: Likewise.
* src/filter_seccomp.c (traced_by_seccomp): Force tracing syscalls
marked with `COMM_CHANGE' if `PID_DECODING_COMM' flag is set in
`pid_decoding'.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Co-authored-by: Dmitry V. Levin <ldv@strace.io>
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Headers updated automatically using maint/update_copyright_years.sh
script.
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* src/Makefile.am: New file.
* src/.gitignore: Likewise.
* scno.am: Move into src subdirectory.
* scno.head: Likewise.
* strace-graph: Likewise.
* strace-log-merge: Likewise.
* linux/: Likewise.
* types/: Likewise.
* xlat/: Likewise.
* *.awk: Likewise.
* *.c: Likewise.
* *.h: Likewise.
* *.sh: Likewise.
* .gitignore: Update.
* Makefile.am: Update.
* bootstrap: Update.
* configure.ac: Update.
* debian/rules: Update.
* debian/strace-udeb.install: Update.
* debian/strace.examples: Update.
* debian/strace.install: Update.
* debian/strace64.install: Update.
* m4/gen_bpf_attr_m4.sh: Update.
* m4/mpers.m4: Update.
* tests/Makefile.am: Update.
* tests/init.sh: Update.
* tests/legacy_syscall_info.test: Update.
* tests/strace-log-merge-error.test: Update.
* tests/strace-log-merge-suffix.test: Update.
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