msg_flags.c

 1// SPDX-License-Identifier: LGPL-2.1
 2#include <sys/types.h>
 3#include <sys/socket.h>
 4
 5#ifndef MSG_PROBE
 6#define MSG_PROBE		     0x10
 7#endif
 8#ifndef MSG_WAITFORONE
 9#define MSG_WAITFORONE		   0x10000
10#endif
11#ifndef MSG_BATCH
12#define MSG_BATCH		   0x40000
13#endif
14#ifndef MSG_SOCK_DEVMEM
15#define MSG_SOCK_DEVMEM		 0x2000000
16#endif
17#ifndef MSG_ZEROCOPY
18#define MSG_ZEROCOPY		 0x4000000
19#endif
20#ifndef MSG_SPLICE_PAGES
21#define MSG_SPLICE_PAGES	0x8000000
22#endif
23#ifndef MSG_FASTOPEN
24#define MSG_FASTOPEN		0x20000000
25#endif
26#ifndef MSG_CMSG_CLOEXEC
27# define MSG_CMSG_CLOEXEC	0x40000000
28#endif
29
30static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size,
31					       struct syscall_arg *arg)
32{
33	bool show_prefix = arg->show_string_prefix;
34	const char *prefix = "MSG_";
35	int printed = 0, flags = arg->val;
36
37	if (flags == 0)
38		return scnprintf(bf, size, "NONE");
39#define	P_MSG_FLAG(n) \
40	if (flags & MSG_##n) { \
41		printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
42		flags &= ~MSG_##n; \
43	}
44
45	P_MSG_FLAG(OOB);
46	P_MSG_FLAG(PEEK);
47	P_MSG_FLAG(DONTROUTE);
48	P_MSG_FLAG(CTRUNC);
49	P_MSG_FLAG(PROBE);
50	P_MSG_FLAG(TRUNC);
51	P_MSG_FLAG(DONTWAIT);
52	P_MSG_FLAG(EOR);
53	P_MSG_FLAG(WAITALL);
54	P_MSG_FLAG(FIN);
55	P_MSG_FLAG(SYN);
56	P_MSG_FLAG(CONFIRM);
57	P_MSG_FLAG(RST);
58	P_MSG_FLAG(ERRQUEUE);
59	P_MSG_FLAG(NOSIGNAL);
60	P_MSG_FLAG(MORE);
61	P_MSG_FLAG(WAITFORONE);
62	P_MSG_FLAG(BATCH);
63	P_MSG_FLAG(SOCK_DEVMEM);
64	P_MSG_FLAG(ZEROCOPY);
65	P_MSG_FLAG(SPLICE_PAGES);
66	P_MSG_FLAG(FASTOPEN);
67	P_MSG_FLAG(CMSG_CLOEXEC);
68#undef P_MSG_FLAG
69
70	if (flags)
71		printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
72
73	return printed;
74}
75
76#define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags