1*4882a593Smuzhiyun // SPDX-License-Identifier: LGPL-2.1
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * trace/beauty/fcntl.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include "trace/beauty/beauty.h"
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <uapi/linux/fcntl.h>
11*4882a593Smuzhiyun
fcntl__scnprintf_getfd(unsigned long val,char * bf,size_t size,bool show_prefix)12*4882a593Smuzhiyun static size_t fcntl__scnprintf_getfd(unsigned long val, char *bf, size_t size, bool show_prefix)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun return val ? scnprintf(bf, size, "%s", "0") :
15*4882a593Smuzhiyun scnprintf(bf, size, "%s%s", show_prefix ? "FD_" : "", "CLOEXEC");
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun
syscall_arg__scnprintf_fcntl_getfd(char * bf,size_t size,struct syscall_arg * arg)18*4882a593Smuzhiyun static size_t syscall_arg__scnprintf_fcntl_getfd(char *bf, size_t size, struct syscall_arg *arg)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun return fcntl__scnprintf_getfd(arg->val, bf, size, arg->show_string_prefix);
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun
fcntl__scnprintf_getlease(unsigned long val,char * bf,size_t size,bool show_prefix)23*4882a593Smuzhiyun static size_t fcntl__scnprintf_getlease(unsigned long val, char *bf, size_t size, bool show_prefix)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun static const char *fcntl_setlease[] = { "RDLCK", "WRLCK", "UNLCK", };
26*4882a593Smuzhiyun static DEFINE_STRARRAY(fcntl_setlease, "F_");
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun return strarray__scnprintf(&strarray__fcntl_setlease, bf, size, "%x", show_prefix, val);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
syscall_arg__scnprintf_fcntl_getlease(char * bf,size_t size,struct syscall_arg * arg)31*4882a593Smuzhiyun static size_t syscall_arg__scnprintf_fcntl_getlease(char *bf, size_t size, struct syscall_arg *arg)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun return fcntl__scnprintf_getlease(arg->val, bf, size, arg->show_string_prefix);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
syscall_arg__scnprintf_fcntl_cmd(char * bf,size_t size,struct syscall_arg * arg)36*4882a593Smuzhiyun size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_arg *arg)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun if (arg->val == F_GETFL) {
39*4882a593Smuzhiyun syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_open_flags);
40*4882a593Smuzhiyun goto mask_arg;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun if (arg->val == F_GETFD) {
43*4882a593Smuzhiyun syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getfd);
44*4882a593Smuzhiyun goto mask_arg;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun if (arg->val == F_DUPFD_CLOEXEC || arg->val == F_DUPFD) {
47*4882a593Smuzhiyun syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fd);
48*4882a593Smuzhiyun goto out;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun if (arg->val == F_GETOWN) {
51*4882a593Smuzhiyun syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_pid);
52*4882a593Smuzhiyun goto mask_arg;
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun if (arg->val == F_GETLEASE) {
55*4882a593Smuzhiyun syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getlease);
56*4882a593Smuzhiyun goto mask_arg;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun /*
59*4882a593Smuzhiyun * Some commands ignore the third fcntl argument, "arg", so mask it
60*4882a593Smuzhiyun */
61*4882a593Smuzhiyun if (arg->val == F_GET_SEALS ||
62*4882a593Smuzhiyun arg->val == F_GETSIG) {
63*4882a593Smuzhiyun mask_arg:
64*4882a593Smuzhiyun arg->mask |= (1 << 2);
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun out:
67*4882a593Smuzhiyun return syscall_arg__scnprintf_strarrays(bf, size, arg);
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
syscall_arg__scnprintf_fcntl_arg(char * bf,size_t size,struct syscall_arg * arg)70*4882a593Smuzhiyun size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_arg *arg)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun bool show_prefix = arg->show_string_prefix;
73*4882a593Smuzhiyun int cmd = syscall_arg__val(arg, 1);
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun if (cmd == F_DUPFD)
76*4882a593Smuzhiyun return syscall_arg__scnprintf_fd(bf, size, arg);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun if (cmd == F_SETFD)
79*4882a593Smuzhiyun return fcntl__scnprintf_getfd(arg->val, bf, size, show_prefix);
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun if (cmd == F_SETFL)
82*4882a593Smuzhiyun return open__scnprintf_flags(arg->val, bf, size, show_prefix);
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun if (cmd == F_SETOWN)
85*4882a593Smuzhiyun return syscall_arg__scnprintf_pid(bf, size, arg);
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun if (cmd == F_SETLEASE)
88*4882a593Smuzhiyun return fcntl__scnprintf_getlease(arg->val, bf, size, show_prefix);
89*4882a593Smuzhiyun /*
90*4882a593Smuzhiyun * We still don't grab the contents of pointers on entry or exit,
91*4882a593Smuzhiyun * so just print them as hex numbers
92*4882a593Smuzhiyun */
93*4882a593Smuzhiyun if (cmd == F_SETLK || cmd == F_SETLKW || cmd == F_GETLK ||
94*4882a593Smuzhiyun cmd == F_OFD_SETLK || cmd == F_OFD_SETLKW || cmd == F_OFD_GETLK ||
95*4882a593Smuzhiyun cmd == F_GETOWN_EX || cmd == F_SETOWN_EX ||
96*4882a593Smuzhiyun cmd == F_GET_RW_HINT || cmd == F_SET_RW_HINT ||
97*4882a593Smuzhiyun cmd == F_GET_FILE_RW_HINT || cmd == F_SET_FILE_RW_HINT)
98*4882a593Smuzhiyun return syscall_arg__scnprintf_hex(bf, size, arg);
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun return syscall_arg__scnprintf_long(bf, size, arg);
101*4882a593Smuzhiyun }
102