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This change extends -yy option to handle unix domain sockets:
their peer addresses will be printed, similar to inet sockets.
For a listening socket, its socket inode and socket path are printed.
For an accepted socket, its socket inode, the peer inode, and the
socket path are printed.
For a client socket, its socket inode and the peer inode are printed.
An example of a server side communication using netcat:
$ ./strace -yy -e network nc -l -U /tmp/example.sock
socket(PF_LOCAL, SOCK_STREAM, 0) = 3
setsockopt(3<UNIX:[14728348]>, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
bind(3<UNIX:[14728348]>, {sa_family=AF_LOCAL, sun_path="/tmp/example.sock"}, 19) = 0
listen(3<UNIX:[14728348,"/tmp/example.sock"]>, 10) = 0
accept(3<UNIX:[14728348,"/tmp/example.sock"]>, {sa_family=AF_LOCAL, NULL}, [2]) = 4<UNIX:[14727246->14727245,"/tmp/example.sock"]>
recvfrom(4<UNIX:[14727246->14727245,"/tmp/example.sock"]>, "INPUT\n", 8192, 0, NULL, NULL) = 6
INPUT
An example of a client side communication using netcat:
$ ./strace -yy -e network nc -U /tmp/example.sock
socket(PF_LOCAL, SOCK_STREAM, 0) = 3
connect(3<UNIX:[14727245]>, {sa_family=AF_LOCAL, sun_path="/tmp/example.sock"}, 19) = 0
getsockopt(3<UNIX:[14727245]>, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
INPUT
...
sendto(3<UNIX:[14727245->14727246]>, "INPUT\n", 6, 0, NULL, 0) = 6
* linux/unix_diag.h: New file.
* socketutils.c (send_query): Rename to inet_send_query.
(parse_response): Rename to inet_parse_response.
(unix_print, unix_send_query, unix_parse_response): New functions.
(receive_responses): Add a new argument named parser: a function for
handling protocol specific data parts of diag messages.
(print_sockaddr_by_inode): Call unix_print.
Replace NETLINK_INET_DIAG with NETLINK_SOCK_DIAG, they are equal
but NETLINK_SOCK_DIAG looks more generic.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
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>
Convert parsers of these syscalls to the same scheme as were applied to
parsers of other uid/gid related syscalls.
That is, define two sets of parsers on architectures that support
(either directly or via multiarch) 16-bit and 32-bit gid getgroups
and setgroups syscalls simultaneously, and reuse essentially the same
code by parametrizing uid_t and names of parser functions.
* groups.c: Remove.
(sys_getgroups, sys_setgroups): Move ...
* uid.c: ... here and parametrize their names.
* Makefile.am (strace_SOURCES): Remove groups.c.
* linux/syscall.h (sys_getgroups32, sys_setgroups32): Remove.
[NEED_UID16_PARSERS] (sys_getgroups16, sys_setgroups16): New prototypes.
* linux/arm/syscallent.h: Rename sys_[gs]etgroups to sys_[gs]etgroups16,
rename sys_[gs]etgroups32 to sys_[gs]etgroups.
* linux/bfin/syscallent.h: Likewise.
* linux/i386/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/s390/syscallent.h: Likewise.
* linux/sh/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* tests/uid.c: Test for getgroups.
* tests/uid16.c: Likewise.
* tests/uid32.c: Test for getgroups32.
* tests/uid.awk: Test for getgroups/getgroups32 decoding.
* tests/uid.test: Trace getgroups/getgroups32 syscalls.
Define two sets of parsers on architectures that support (either
directly or via multiarch) 16-bit and 32-bit uid/gid syscalls
simultaneously. Since the code in these two sets is essentially
the same and the key difference between them is the size of uid_t,
implement it by parametrizing uid_t and names of parser functions.
* defs.h (NEED_UID16_PARSERS): New macro.
* linux/syscall.h [NEED_UID16_PARSERS] (sys_chown16, sys_fchown16,
sys_getresuid16, sys_getuid16, sys_setfsuid16, sys_setresuid16,
sys_setreuid16, sys_setuid16): New prototypes.
* linux/dummy.h (sys_geteuid16): Alias to sys_getuid16.
(sys_getegid16, sys_getgid16, sys_getresgid16, sys_setfsgid16,
sys_setgid16, sys_setregid16, sys_setresgid16): Alias to corresponding
sys_*uid16 functions.
* uid.c: Stop including <asm/posix_types.h>.
Parametrize uid_t and names of all exported functions.
(get_print_uid): New function.
(sys_getresuid): Use it.
(printuid): Check for (uid_t) -1.
* uid16.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* linux/arm/syscallent.h: Use sys_chown16, sys_fchown16, sys_getegid16,
sys_geteuid16, sys_getgid16, sys_getresgid16, sys_getresuid16,
sys_getuid16, sys_setfsgid16, sys_setfsuid16, sys_setgid16,
sys_setregid16, sys_setresgid16, sys_setresuid16, sys_setreuid16,
and sys_setuid16 parsers for *chown and [gs]et*[gu]id syscall entries.
* linux/bfin/syscallent.h: Likewise.
* linux/i386/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/s390/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* linux/sh/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* tests/uid16.c: New file.
* tests/uid16.test: New test.
* tests/Makefile.am (CHECK_PROGRAMS): Add uid16.
(TESTS): Add uid16.test.
* tests/.gitignore: Add uid16.
* linux/sh/syscallent.h: Replace printargs with real syscall
parsers in *chown32 and [gs]et*[gu]id32 syscall entries.
* linux/sh64/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Add "32" suffix to names
of [gs]etres[gu]id32 syscalls #108..112.
Fix entry for syscall #112 from setresgid32 to setregid32.
This will make further uid/gid fixes simpler.
* fchownat.c: New file.
* chown.c (sys_fchownat: Move to fchownat.c.
(sys_chown, sys_fchown): Move to uid.c.
* Makefile.am (strace_SOURCES): Remove chown.c, add fchownat.c.
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.
* swapon.c: Ensure that SWAP_FLAG_DISCARD_ONCE and
SWAP_FLAG_DISCARD_PAGES are defined.
* xlat/swap_flags.in: Add SWAP_FLAG_DISCARD_ONCE and
SWAP_FLAG_DISCARD_PAGES.
Since sys_prctl is referenced by syscallent files unconditionally,
conditional compilation of sys_prctl depending on prctl availability is
pointless.
* prctl.c (unalignctl_string, sys_prctl): Compile unconditionally.
Introduce XLAT_UOFF macro and use it to automatically transform
struct_user_offsets array into a more readable and compact form.
for n in $(sed -n 's/^[[:space:]]*{[[:space:]]*uoff(\([a-z_0-9]\+\)),.*/\1/p' process.c |sort -u); do
sed -i 's/^\([[:space:]]*\){[[:space:]]*uoff('"$n"'),[[:space:]]*"offsetof(struct user,[[:space:]]*'"$n"')"[[:space:]]*},$/\1XLAT_UOFF('"$n"'),/' process.c
done
* process.c (XLAT_UOFF): New macro.
(struct_user_offsets): Use it.
* clone.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* process.c: Move sys_clone, sys_setns, sys_unshare, sys_fork, and
related code to clone.c.
* groups.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* process.c: Move sys_setgroups, sys_getgroups, sys_setgroups32,
sys_getgroups32, and related code to groups.c.
* wait.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* process.c: Move sys_waitpid, sys_wait4, sys_osf_wait4, sys_waitid and
related code to wait.c.
* sched.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* process.c: Move sys_sched_getscheduler, sys_sched_setscheduler,
sys_sched_getparam, sys_sched_setparam, sys_sched_get_priority_min,
sys_sched_rr_get_interval, and related code to sched.c.
* link.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* file.c: Move sys_link, sys_linkat, sys_unlinkat, sys_symlinkat, and
related code to link.c.
