From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- tools/perf/trace/beauty/prctl.c | 82 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 tools/perf/trace/beauty/prctl.c (limited to 'tools/perf/trace/beauty/prctl.c') diff --git a/tools/perf/trace/beauty/prctl.c b/tools/perf/trace/beauty/prctl.c new file mode 100644 index 000000000..6fe5ad5f5 --- /dev/null +++ b/tools/perf/trace/beauty/prctl.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * trace/beauty/prctl.c + * + * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo + */ + +#include "trace/beauty/beauty.h" +#include +#include + +#include "trace/beauty/generated/prctl_option_array.c" + +DEFINE_STRARRAY(prctl_options, "PR_"); + +static size_t prctl__scnprintf_option(int option, char *bf, size_t size, bool show_prefix) +{ + return strarray__scnprintf(&strarray__prctl_options, bf, size, "%d", show_prefix, option); +} + +static size_t prctl__scnprintf_set_mm(int option, char *bf, size_t size, bool show_prefix) +{ + static DEFINE_STRARRAY(prctl_set_mm_options, "PR_SET_MM_"); + return strarray__scnprintf(&strarray__prctl_set_mm_options, bf, size, "%d", show_prefix, option); +} + +size_t syscall_arg__scnprintf_prctl_arg2(char *bf, size_t size, struct syscall_arg *arg) +{ + int option = syscall_arg__val(arg, 0); + + if (option == PR_SET_MM) + return prctl__scnprintf_set_mm(arg->val, bf, size, arg->show_string_prefix); + /* + * We still don't grab the contents of pointers on entry or exit, + * so just print them as hex numbers + */ + if (option == PR_SET_NAME) + return syscall_arg__scnprintf_hex(bf, size, arg); + + return syscall_arg__scnprintf_long(bf, size, arg); +} + +size_t syscall_arg__scnprintf_prctl_arg3(char *bf, size_t size, struct syscall_arg *arg) +{ + int option = syscall_arg__val(arg, 0); + + if (option == PR_SET_MM) + return syscall_arg__scnprintf_hex(bf, size, arg); + + return syscall_arg__scnprintf_long(bf, size, arg); +} + +size_t syscall_arg__scnprintf_prctl_option(char *bf, size_t size, struct syscall_arg *arg) +{ + unsigned long option = arg->val; + enum { + SPO_ARG2 = (1 << 1), + SPO_ARG3 = (1 << 2), + SPO_ARG4 = (1 << 3), + SPO_ARG5 = (1 << 4), + SPO_ARG6 = (1 << 5), + }; + const u8 all_but2 = SPO_ARG3 | SPO_ARG4 | SPO_ARG5 | SPO_ARG6; + const u8 all = SPO_ARG2 | all_but2; + const u8 masks[] = { + [PR_GET_DUMPABLE] = all, + [PR_SET_DUMPABLE] = all_but2, + [PR_SET_NAME] = all_but2, + [PR_GET_CHILD_SUBREAPER] = all_but2, + [PR_SET_CHILD_SUBREAPER] = all_but2, + [PR_GET_SECUREBITS] = all, + [PR_SET_SECUREBITS] = all_but2, + [PR_SET_MM] = SPO_ARG4 | SPO_ARG5 | SPO_ARG6, + [PR_GET_PDEATHSIG] = all, + [PR_SET_PDEATHSIG] = all_but2, + }; + + if (option < ARRAY_SIZE(masks)) + arg->mask |= masks[option]; + + return prctl__scnprintf_option(option, bf, size, arg->show_string_prefix); +} -- cgit v1.2.3