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| author | Arnaldo Carvalho de Melo | 2019-07-16 14:55:57 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2019-07-29 18:34:41 -0300 |
| commit | 8d5da2649d8211e63c5f65ccf8945f2c46a9c0b8 (patch) | |
| tree | b253336f074c366aae78cf9f01da18c2b4f3a1e5 /tools/perf/builtin-trace.c | |
| parent | bf134ca6c8eafd7ddc28840f767259b97e950bac (diff) | |
perf augmented_raw_syscalls: Support copying two string syscall args
Starting with the renameat and renameat2 syscall, that both receive as
second and fourth parameters a pathname:
# perf trace -e rename* mv one ANOTHER
LLVM: dumping /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
mv: cannot stat 'one': No such file or directory
renameat2(AT_FDCWD, "one", AT_FDCWD, "ANOTHER", RENAME_NOREPLACE) = -1 ENOENT (No such file or directory)
#
Since the per CPU scratch buffer map has space for two maximum sized
pathnames, the verifier is satisfied that there will be no overrun.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-x2uboyg5kx2wqeru288209b6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-trace.c')
| -rw-r--r-- | tools/perf/builtin-trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index a681b8c2ee4e..c64f7c99db15 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -873,9 +873,11 @@ static struct syscall_fmt { { .name = "recvmsg", .arg = { [2] = { .scnprintf = SCA_MSG_FLAGS, /* flags */ }, }, }, { .name = "renameat", + .bpf_prog_name = { .sys_enter = "!syscalls:sys_enter_renameat", }, .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ }, [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ }, }, }, { .name = "renameat2", + .bpf_prog_name = { .sys_enter = "!syscalls:sys_enter_renameat", }, .arg = { [0] = { .scnprintf = SCA_FDAT, /* olddirfd */ }, [2] = { .scnprintf = SCA_FDAT, /* newdirfd */ }, [4] = { .scnprintf = SCA_RENAMEAT2_FLAGS, /* flags */ }, }, }, |