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* defs.h (umove_ulong_array_or_printaddr): New prototype.
* util.c (umove_ulong_array_or_printaddr): New function.
* desc.c (sys_pselect6): Use it instead of open-coding
a proxy struct parser for different personalities.
* io.c (tprint_iov_upto): Use it instead of open-coding
a struct iovec parser for different personalities.
* kexec.c (print_kexec_segments): Use it instead of open-coding
a struct kexec_segment parser for different personalities.
(print_seg): Pass arguments using an array.
Rename the recently added function to reflect what kind of data type
it actually deals with: unsigned long int, without sign extension.
* defs.h (umove_long_or_printaddr): Rename to umove_ulong_or_printaddr,
chage 3rd argument to unsigned long *.
* util.c (umove_long_or_printaddr): Likewise.
* aio.c (sys_io_submit): Update callers.
Introduce a new helper function to fetch tracee's long integers
and use it to fix multiple personalities support in io_submit parser.
* defs.h (umove_long_or_printaddr): New prototype.
* util.c (umove_long_or_printaddr): New function.
* aio.c (sys_io_submit): Use it to fetch tracee's pointers.
* tests/aio.c: New file.
* tests/aio.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add aio.
(TESTS): Add aio.test.
* tests/.gitignore: Add aio.
Currently the code assumes the set of valid options between getsockopt
and setsockopt are exactly the same and thus maintains one list. The
kernel unfortunately does not do this -- it allows for different opts
between the get and set functions. See the {g,s}et_opt{min,max} fields
in the various netfilter subcores.
To support this, extend the printxval function to take multiple sets of
xlats as varargs. Then we add the new get/set lists, and pass them down
in the net code when decoding things.
A simple example is iptables; before:
getsockopt(4, SOL_IP, 0x40 /* IP_??? */, ...) = 0
getsockopt(4, SOL_IP, 0x41 /* IP_??? */, ...) = 0
after:
getsockopt(4, SOL_IP, IPT_SO_GET_INFO, ...) = 0
getsockopt(4, SOL_IP, IPT_SO_GET_ENTRIES, ...) = 0
If these were setsockopt calls, then 0x40 & 0x41 would be
IPT_SO_SET_REPLACE & IPT_SO_SET_ADD_COUNTERS.
* configure.ac: Check for netfilter headers.
* defs.h (printxvals): New prototype.
(printxval): Change to a define.
* net.c: Include netfilter headers and new sockopts headers.
(print_sockopt_fd_level_name): Add a is_getsockopt argument. Change SOL_IP
and SOL_IPV6 decoding to use printxvals, and use is_getsockopt to pass more
xlats down.
(getsockopt): Call print_sockopt_fd_level_name with is_getsockopt as true.
(setsockopt): Call print_sockopt_fd_level_name with is_getsockopt as false.
* util.c (printxval): Rename to ...
(printxvals): ... this. Rewrite to be varargs based.
* xlat/getsockipoptions.in: New xlat list.
* xlat/getsockipv6options.in, xlat/setsockipoptions.in,
xlat/setsockipv6options.in: Likewise.
After this change, umoven_or_printaddr and its callers, including
printnum_* and printpair_*, will not fetch data in !verbose mode.
* util.c (umoven_or_printaddr): Do not call umoven if !verbose.
With this change, printnum_* printers will not attempt to fetch data
in case of exiting(tcp) && syserror(tcp).
All "at exiting" decoders that call these printers have been made
ready for this change in previous commits.
* util.c (DEF_PRINTNUM, DEF_PRINTPAIR): Use umove_or_printaddr.
* prctl.c (prctl_exit): Use printnum_int and printnum_long.
(sys_arch_prctl): Do not check for syserror.
Add functions to fetch and print pairs of integer types.
Note that these printers do not attempt to fetch data
in case of exiting(tcp) && syserror(tcp).
printnum_* printers will follow as soon as all callers are made ready
for this change.
* defs.h (printpair_int, printpair_long, printpair_int64): New
prototypes.
* util.c (DEF_PRINTPAIR): New macro.
(printpair_int, printpair_long, printpair_int64): New functions.
Add printnum_short and printnum_int64 in addition to already existing
printnum_int and printnum_long.
* defs.h (printnum_short, printnum_int64): New prototypes.
* util.c (DEF_PRINTNUM): New macro.
(printnum_int, printnum_long): Use DEF_PRINTNUM.
(printnum_short, printnum_int64): New functions.
printaddr is a simple function implementing "print NULL or address"
idiom.
umoven_or_printaddr is a wrapper around umoven that has the same return
value semantics as umoven but also prints the address when the data
is not going to be fetched (in case of exiting(tcp) && syserror(tcp))
or cannot be fetched (umoven fails).
umove_or_printaddr is a macro wrapper around umoven_or_printaddr that
mirrors umove wrapper around umoven.
* defs.h (printaddr, umoven_or_printaddr): New prototypes.
(umove_or_printaddr): New macro.
* util.c (printaddr, umoven_or_printaddr): New functions.
* aio.c (print_common_flags): Use #ifdef in the check for
HAVE_STRUCT_IOCB_U_C_FLAGS.
* defs.h: Use #ifdef in the check for HAVE_LITTLE_ENDIAN_LONG_LONG.
* net.c: Use #ifdef in the check for HAVE_SENDMSG.
* syscall.c (dumpio): Likewise.
* printstat.h (DO_PRINTSTAT): Use #ifdef in checks for
HAVE_STRUCT_STAT_ST_* macros.
* util.c: Use #ifdef in checks for HAVE_SYS_XATTR_H.
Introduce wrappers to the following functions that do memory allocation:
malloc, calloc, realloc, strdup.
This commit is a follow-up to the related discussions in strace-devel ML:
http://sourceforge.net/p/strace/mailman/message/33618180/http://sourceforge.net/p/strace/mailman/message/33733470/
* defs.h (xmalloc, xcalloc, xreallocarray, xstrdup): New prototypes.
* xmalloc.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* count.c (count_syscall, call_summary_pers): Use xcalloc.
* desc.c (decode_select): Use xmalloc.
* dirent.c (sys_getdents, sys_getdents64): Likewise.
* net.c (sys_recvmmsg): Use xstrdup.
* pathtrace.c (storepath): Use xreallocarray.
(pathtrace_match): Use xmalloc.
* strace.c (die_out_of_memory): Move to xmalloc.c.
(expand_tcbtab): Use xcalloc and xreallocarray.
(startup_child): Use xstrdup.
(init): Use xmalloc, xcalloc, and xstrdup.
* syscall.c (reallocate_qual): Use xreallocarray.
(qualify): Use xstrdup.
* unwind.c (unwind_tcb_init): Use xmalloc.
(build_mmap_cache): Use xcalloc, xreallocarray, and xstrdup.
(get_symbol_name): Use xreallocarray.
(stacktrace_walk, queue_put): Use xmalloc.
* util.c (printstr): Use xmalloc.
* vsprintf.c (strace_vfprintf): Likewise.
* defs.h (get_pagesize): New prototype.
* mem.c (get_pagesize) Make global.
* util.c (PAGMASK): Remove.
(vm_read_mem): New process_vm_readv proxy function.
(umoven, umovestr): Use it.
(umovestr): Read chunks up to pagesize at a time.
process_vm_readv() and ptrace(PTRACE_PEEKDATA) have inconsistent access
control rules wrt traced processes: process_vm_readv() is more likely to
fail with EPERM than ptrace(PTRACE_PEEKDATA) when tracing a process that
has execve'd a privileged executable.
* util.c (umoven, umovestr): If process_vm_readv returned EPERM,
fall back to ptrace(PTRACE_PEEKDATA).
Reported-by: Andrew Guertin <lists@dolphinling.net>
Restore the order of including <sys/reg.h> and <linux/ptrace.h>
headers that was inadvertently changed by commit v4.9-280-g5503dd2.
This should fix build on platforms like m68k where some constants
are defined simultaneously as enums by <sys/reg.h> and as macros
by <asm/ptrace.h>.
* process.c: Include "ptrace.h" after "regs.h".
* signal.c: Likewise.
* syscall.c: Likewise.
* util.c: Likewise.
Assume that the kernel is v2.5.46 or newer, i.e. PTRACE_SETOPTIONS
and PTRACE_O_TRACESYSGOOD|PTRACE_O_TRACEEXEC|PTRACE_O_TRACECLONE
are universally available.
This change removes all code that implemented post-execve SIGTRAP
handling and fork/vfork/clone->CLONE_PTRACE substitution.
* defs.h (TCB_BPTSET, TCB_WAITEXECVE): Remove macros.
(need_fork_exec_workarounds, setbpt, clearbpt): Remove declarations.
* strace.c (need_fork_exec_workarounds,
test_ptrace_setoptions_followfork, test_ptrace_setoptions_for_all):
Remove.
(syscall_trap_sig): Set to (SIGTRAP | 0x80).
(ptrace_setoptions): Set to (PTRACE_O_TRACESYSGOOD | PTRACE_O_TRACEEXEC).
(detach): Do not test for TCB_BPTSET.
(init): Do not call test_ptrace_setoptions_followfork and
test_ptrace_setoptions_for_all. Do not test for TCB_BPTSET.
* syscall.c (syscall_fixup_on_sysenter, internal_fork, internal_exec,
syscall_fixup_for_fork_exec, syscall_fixup_on_sysexit): Remove.
(trace_syscall_entering): Do not test for TCB_WAITEXECVE. Do not call
syscall_fixup_on_sysenter and syscall_fixup_for_fork_exec.
(trace_syscall_exiting): Do not call syscall_fixup_on_sysexit and
syscall_fixup_for_fork_exec.
[IA64] (ia64_ia32mode): Make static.
* linux/ia64/arch_regs.h (ia64_ia32mode): Remove declaration.
* util.c: Do not include "syscall.h".
(arg_setup, get_arg0, get_arg1, set_arg0, set_arg1, restore_arg0,
restore_arg1, arg_finish_change, change_syscall, setbpt, clearbpt):
Remove.
* tests/ptrace_setoptions.test: Remove.
* tests/Makefile.am (TESTS): Remove it.
* regs.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* linux/arch_regs.h: New file.
* linux/alpha/arch_regs.h: Likewise.
* linux/arm/arch_regs.h: Likewise.
* linux/hppa/arch_regs.h: Likewise.
* linux/i386/arch_regs.h: Likewise.
* linux/ia64/arch_regs.h: Likewise.
* linux/mips/arch_regs.h: Likewise.
* linux/powerpc/arch_regs.h: Likewise.
* linux/sh64/arch_regs.h: Likewise.
* linux/sparc/arch_regs.h: Likewise.
* linux/sparc64/arch_regs.h: Likewise.
* linux/tile/arch_regs.h: Likewise.
* linux/x86_64/arch_regs.h: Likewise.
* Makefile.am (EXTRA_DIST): Add them.
* defs.h: Remove definitions of PTRACE_*, REG_*, PT_*, U_REG_*,
and ARM_* macros.
Remove declarations of struct pt_regs variables.
[SPARC]: Do not include <asm/psr.h>.
[SPARC64]: Do not include <asm/psrcompat.h>.
* bjm.c: Do not include <sys/user.h>.
* process.c: Include "regs.h".
Do not include <sys/user.h> and <sys/reg.h>.
[IA64]: Do not include <asm/ptrace_offsets.h> and <asm/rse.h>.
* util.c: Likewise.
* syscall.c: Likewise.
[AARCH64]: Define struct arm_pt_regs and ARM_* macros.
[SPARC]: Include <asm/psr.h>.
[SPARC64]: Include <asm/psrcompat.h>.
* signal.c: Include "regs.h".
Do not include <sys/user.h> and <sys/reg.h>.
[IA64]: Do not include <asm/ptrace_offsets.h>.
* strace.c [IA64]: Do not include <asm/ptrace_offsets.h>.
Change printfd() behaviour in show_fd_path mode to quote pathnames
the same way printpathn() does.
* util.c (printfd): Print non-socket paths using print_quoted_string.
* tests/scm_rights-fd.test: Test it.
* tests/scm_rights.c: Update.
string_quote() has proven to be too hard to use, replace it with
print_quoted_string() that does memory allocation and prints the result.
* defs.h (string_quote): Remove.
(QUOTE_0_TERMINATED, QUOTE_OMIT_LEADING_TRAILING_QUOTES): New macros.
(print_quoted_string): New prototype.
* util.c (string_quote): Make static; take "style" flags instead
of "len", treat QUOTE_0_TERMINATED style flag as former (len == -1);
add QUOTE_OMIT_LEADING_TRAILING_QUOTES style flag support.
(ALLOCA_CUTOFF, use_alloca): New macros.
(print_quoted_string): New function.
(printpathn, printstr): Update to new API.
* loop.c (loop_ioctl): Likewise.
* mtd.c (ubi_ioctl): Likewise.
* net.c (print_scm_security): Likewise.
* socketutils.c (unix_parse_response): Likewise.
* defs.h (umoven, umovestr): Change type of 3rd argument from "int"
to "unsigned int".
* util.c (umoven, umovestr): Likewise. Adjust the code appropriately.
The fanotify_mark syscall takes a 64-bit mask, and on 32-bit
architectures it is split up into two syscall arguments.
* configure.ac (AC_CHECK_FUNCS): Add fanotify_mark.
(AC_CHECK_HEADERS): Add sys/fanotify.h.
* defs.h (getllval): New prototype.
* util.c (getllval): New function based on printllval.
(printllval): Use getllval.
* fanotify.c (sys_fanotify_mark): Use getllval to properly decode
64-bit mask and two syscall arguments followed by it.
* tests/fanotify_mark.c: New file.
* tests/fanotify_mark.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add fanotify_mark.
(TESTS): Add fanotify_mark.test.
* tests/.gitignore: Add fanotify_mark.
* util.c (sprinttime): Increase buffer size.
* tests/stat64-v.test: Try to set modification time of the sample file
to a value set in the distant future.
To resolve the peer address of socket, all combinations of families
(AF_INET, AF_INET6) and protocols(IPPROTO_TCP, IPPROTO_UDP) were tried.
This change utilizes the protocol name obtained via getxattr to specify
the right combination.
* socketutils.c (inet_print): New helper function.
(print_sockaddr_by_inode): Use it. Utilize the protocol name
associated with the given inode for resolving the peer socket
address. If the protocol name is NULL, resolve the address
by trying combinations of families and protocols as before.
* defs.h (print_sockaddr_by_inode): Update prototype.
* util.c (printfd): Pass the protocol name associated with
the given path to print_sockaddr_by_inode as the 2nd argument.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
It was not a good idea to treat uid_t as a long int type because
the latter is twice larger than uid_t on 64-bit architectures.
* defs.h (printuid): Change uid argument type from "unsigned long"
to "unsigned int".
* util.c (printuid): Likewise. When uid equals to -1, print "-1".
* tests/uid.awk: New file.
* tests/uid.c: New file.
* tests/uid32.c: Likewise.
* tests/uid.test: New test.
* tests/uid32.test: Likewise.
* tests/Makefile.am (CHECK_PROGRAMS): Add uid and uid32.
(TESTS): Add uid.test and uid32.test.
(EXTRA_DIST): Add uid.awk.
* tests/.gitignore: Add uid and uid32.
For those socket descriptors that have no associated ip:port pairs
(or when this information is not available), -yy option prints
the same <socket:[INODE]> information as -y option, e.g.
$ strace -e sendto -yy ip l > /dev/null
sendto(3<socket:[23456789]>, ...
This change makes -yy output more informative: instead of just
printing "socket", the name of protocol behind the socket descriptor
will be printed, e.g.
sendto(3<NETLINK:[23456789]>, ...
* configure.ac (AC_CHECK_HEADERS): Add sys/xattr.h.
* tests/net-yy-accept.awk: Update to support protocol names.
* tests/net-yy-connect.awk: Likewise.
* util.c [HAVE_SYS_XATTR_H]: Include <sys/xattr.h>.
(getfdproto): New function.
(printfd): Use it.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
MAXPATHLEN is defined to PATH_MAX, so replace the former with the latter.
* strace.c (startup_child): Replace MAXPATHLEN with PATH_MAX.
* util.c (printpathn, printpath): Likewise.
Since <sys/uio.h> is standardized by POSIX and is present in all
available versions of glibc, it's safe to assume that any usable
libc implementation provides this header file.
* configure.ac (AC_CHECK_HEADERS): Remove sys/uio.h.
* io.c: Include <sys/uio.h> unconditionally.
(tprint_iov_upto, tprint_iov, sys_readv, sys_writev,
print_llu_from_low_high_val, sys_preadv, sys_pwritev): Define
unconditionally.
* net.c: Include <sys/uio.h> unconditionally.
* util.c: Include <sys/uio.h> unconditionally.
(dumpiov): Define unconditionally.
This fixes compilation with musl libc.
This approach was already used in process.c, so I assume it is safe.
* signal.c: Move [HAVE_LINUX_PTRACE_H] code out of [HAVE_SYS_REG_H] check.
* syscall.c: Likewise.
* util.c: Likewise.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
* defs.h (xlat_search): New prototype.
* util.c (xlat_bsearch_compare, xlat_search): New functions.
* file.c (sprintfstype): Use xlat_search for fsmagic lookup.
* xlat/fsmagic.in: Sort by value and mark as not NULL-terminated.
* tests/statfs.c: New file.
* tests/statfs.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add statfs.
(statfs_CFLAGS): Define.
(TESTS): Add statfs.test.
* tests/.gitignore: Add statfs.
When two ore more -y options are given, print local and remote ip:port
pairs associated with socket descriptors. This implementation uses
NETLINK_INET_DIAG for sockaddr lookup; it's based on the patch
prepared by Zubin Mithra as a part of his GSoC 2014 strace project.
* Makefile.am (strace_SOURCES): Add socketutils.c
(EXTRA_DIST): Add linux/inet_diag.h and linux/sock_diag.h.
* defs.h (print_sockaddr_by_inode): New prototype.
* linux/inet_diag.h: New file.
* linux/sock_diag.h: Likewise.
* socketutils.c: Likewise.
* strace.1: Document -yy option.
* strace.c (usage): Likewise.
* util.c (printfd): Use print_sockaddr_by_inode.
* configure.ac (gl_WARN_ADD): Add -Wsign-compare.
* defs.h (struct tcb): Change 'currpers' type to unsigned.
(struct xlat): Change 'val' type to unsigned
(signame): Add 'const' qualifier to its argument.
(xlookup, printxval): Add 'const' qualifier to the 2nd argument and
change its type to unsigned.
(printpathn): Change the 3rd argument type to unsigned.
(ioctl_lookup): Change 1st argument type to unsigned.
* count.c (call_summary_pers, call_summary): Change 'i' type to unsigned.
* file.c (print_xattr_list): Fix comparisons between signed and unsigned
long values.
* ioctl.c (compare): Fix cast.
(ioctl_lookup): Change 1st argument type to to unsigned.
(ioctl_next_match): Change 'code' type to unsigned.
* mem.c (sys_move_pages): Change 'i' type to unsigned.
* mtd.c (mtd_ioctl): Change 'i' and 'j' types to unsigned.
Print 'i' using %u format string.
* process.c (sys_prctl): Change 'i' type to unsigned.
(printargv): Change 'n' type to unsigned.
(sys_ptrace): Change 'addr' type to unsigned.
* scsi.c (print_sg_io_buffer): Add 'const' qualifier to 'len' argument
and change its type to unsigned. Change 'i' and 'allocated' types
to unsigned.
* signal.c (signame): Add 'const' qualifier to its argument.
Fix comparisons between signed and unsigned values.
(sprintsigmask_n, printsiginfo): Fix comparisons between signed and
unsigned values.
* sock.c (sock_ioctl): Change 'i' and 'nifra' types to unsigned.
* strace.c (expand_tcbtab, alloctcb): Change 'i' type to unsigned.
(detach): Change 'sig' type to unsigned.
(startup_attach): Change 'tcbi' type to unsigned.
(startup_child): Change 'm', 'n', and 'len' types to unsigned.
(init): Use new variable to iterate 'tcbtab'.
(pid2tcb): Change 'i' type to unsigned.
(cleanup): Change 'i' and 'sig' types to unsigned.
* syscall.c (update_personality): Change 'personality' argument type
to unsigned.
(struct qual_options): Change 'bitflag' type to unsigned.
(reallocate_qual): Add 'const' qualifier to its argument and change its
type to unsigned.
(qualify_one): Change 'n' and 'bitflag' arguments types to unsigned.
Add 'const' qualifier to 'n', 'not', and 'pers' arguments.
Change 'p' type to signed int.
(qual_syscall): Change 'bitflag' argument type to unsigned.
Add 'const' qualifier to 'bitflag' and 'not' arguments.
Change 'p' type to signed int.
(qual_signal): Change 'bitflag' argument type to unsigned.
Add 'const' qualifier to 'bitflag' and 'not' arguments.
Change 'i' type to unsigned.
(qual_desc): Change 'bitflag' argument type to unsigned.
Add 'const' qualifier to 'bitflag' and 'not' arguments.
(qualify): Change 'i' type to unsigned.
(get_scno): Change 'currpers' type to unsigned.
Fix a comparison between signed and unsigned values.
* system.c (sys_sysctl): Change 'cnt' and 'max_cnt' types to unsigned.
Fix comparisons between signed and unsigned values.
* util.c (xlookup, printxval): Add 'const' qualifier to 'val' argument
and change its type to unsigned.
(printuid): Fix a comparison between signed and unsigned values.
(printpathn): Change 'n' argument type to unsigned.
(printstr): Change 'size' type to unsigned.
Fix a comparison between signed and unsigned values.
(setbpt): Change 'i' type to unsigned.
* net.c (printsock): Silence a compilation warning.
* reboot.c (sys_reboot): Likewise.
The code base has settled on PTRACE_{PEEK,POKE}USER (with an E) and has
logic in defs.h to make sure it's set sanely. Delete this old logic as
the defs.h takes care of it now.
* process.c: Delete PTRACE_PEEKUSR/PTRACE_POKEUSR defines.
* signal.c: Likewise.
* syscall.c: Delete PTRACE_PEEKUSR define.
* util.c: Likewise.
Added next_set_bit() function which finds the next set bit,
properly taking into account word size of the traced process.
Use it in decode_select() instead of fd_isset().
Also, properly round fdsize up to word size of traced process,
not to strace's word size.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Since glibc-2.18~39 <sys/ptrace.h> defines ptrace_peeksiginfo_args
which collides with <linux/ptrace.h>.
* configure.ac: Check for `struct ptrace_peeksiginfo_args' in
<sys/ptrace.h>.
* process.c: Work around potential conflict between <sys/ptrace.h>
and <linux/ptrace.h> by redefining ptrace_peeksiginfo_args.
* signal.c: Likewise.
* syscall.c: Likewise.
* util.c: Likewise.
Signed-off-by: Ali Polatel <alip@exherbo.org>
Take #2 on mainlining strace support for ARC (last one was 4.6 based back
in March 2011), see
http://sourceforge.net/p/strace/mailman/message/27210168/
The syscall ABI is asm-generic/unistd.h based (so no legacy syscalls),
hence very similar to metag port.
test/* all seem to work well.
* linux/arc/ioctlent.h.in: New file.
* linux/arc/syscallent.h: Likewise.
* Makefile.am (EXTRA_DIST): Add linux/arc/ioctlent.h.in and
linux/arc/syscallent.h.
* configure.ac: Add ARC to the list of supported architectures.
* defs.h: Add ARC support.
* process.c (struct_user_offsets): Likewise.
* signal.c (sys_sigreturn): Likewise.
* syscall.c (print_pc, get_regset, get_regs, get_scno, get_syscall_args,
get_syscall_result, get_error): Likewise.
* util.c (change_syscall): Likewise.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
ARM OABI and ARM EABI have different function parameters passing rules,
see commit v4.6-11-g7a5b08f for details.
* util.c (printllval): Do not align argument number in case of ARM OABI.
* file.c (sys_fadvise64_64): Likewise.
