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* filter_qualify.c (qualify_kvm): Call error_msg_and_die instead of
error_msg in case of invalid -e kvm= argument.
* tests/options-syntax.test: Check it.
* strace.c (init): Do not set tflag when rflag is set.
(printleader): Handle rflag and tflag separately.
* strace.1.in (.SH OPTIONS): Add a note about differences between
the monotonic clock time and the wall clock time.
* tests/options-syntax.test: Remove the check for
"-tt has no effect with -r" warning.
* NEWS: Mention this.
Suggested-by: Josh Triplett <josh@freedesktop.org>
Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
Closes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=466195
Starting with commit v4.5.19~88 strace imposed an artificial limit
on output file names in -ff mode, leading to the following absurd
behaviour:
$ strace -ff -o"$(perl -e 'print "/" x 510')/$PWD/log" /bin/true
strace: Can't fopen '////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////.12345': Permission denied
* strace.c (newoutf): Raise buffer size to PATH_MAX.
(init) <followfork >= 2>: Check output file name prefix length.
* tests/options-syntax.test: Check it.
Workaround musl >= 1.1.17 ability to use AT_EXECFN during
program_invocation_name initialization.
* tests/options-syntax.test: Check for two valid variants
of "zeroargc strace" expected output.
* strace.c (init): Adjust argc along with argv,
check that adjusted argc is sane.
* tests/zeroargc.c: New file.
* tests/.gitignore: Add zeroargc.
* tests/Makefile.am (check_PROGRAMS): Likewise.
* tests/options-syntax.test: Check strace error diagnostics
in case of zero argc.
* util.c (printstr_ex): Move the check that -s argument
does not exceed -1U / 4 ...
* strace.c (init): ... here.
* tests/options-syntax.test: Check it.
* qualify.c: Include <regex.h>.
(qualify_syscall_regex): New function.
(qualify_syscall): Use it.
* strace.1: Document -e trace=/regex option.
* NEWS: Mention -e trace=/regex option.
* tests/regex.test: New test.
* tests/Makefile.am (DECODER_TESTS): Add it.
* tests/options-syntax.test: Add checks for invaild regexp
and for regexp that doesn't match a syscall.
As a side effect, this also fixes support of negated sets
of descriptors.
* defs.h (struct number_set): New forward declaration.
(read_set, write_set): New variable prototypes.
(is_number_in_set, qualify_read, qualify_write): New function
prototypes.
(QUAL_READ, QUAL_WRITE): Change to values greater than 0xff.
* qualify.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* syscall.c (qual_desc): Remove.
(qual_options): Replace qual_desc with NULL.
(qualify): Use qualify_read and qualify_write.
(dumpio): Use is_number_in_set.
* tests/options-syntax.test: Check invalid sets of descriptors.
* tests/readv.test: Check dumping of negated sets of descriptors.
Change the test to allow wrappers like STRACE="valgrind ./strace".
* tests/options-syntax.test: Strip all words but last from $STRACE
variable in all contexts where the name of strace executable is expected
in its output.
