msg_flags.c

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// SPDX-License-Identifier: GPL-2.0
#include <sys/types.h>
#include <sys/socket.h>

#ifndef MSG_PROBE
#define MSG_PROBE            0x10
#endif
#ifndef MSG_WAITFORONE
#define MSG_WAITFORONE         0x10000
#endif
#ifndef MSG_SENDPAGE_NOTLAST
#define MSG_SENDPAGE_NOTLAST       0x20000
#endif
#ifndef MSG_FASTOPEN
#define MSG_FASTOPEN        0x20000000
#endif
#ifndef MSG_CMSG_CLOEXEC
# define MSG_CMSG_CLOEXEC   0x40000000
#endif

static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size,
                           struct syscall_arg *arg)
{
    int printed = 0, flags = arg->val;

    if (flags == 0)
        return scnprintf(bf, size, "NONE");
#define P_MSG_FLAG(n) \
    if (flags & MSG_##n) { \
        printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
        flags &= ~MSG_##n; \
    }

    P_MSG_FLAG(OOB);
    P_MSG_FLAG(PEEK);
    P_MSG_FLAG(DONTROUTE);
    P_MSG_FLAG(CTRUNC);
    P_MSG_FLAG(PROBE);
    P_MSG_FLAG(TRUNC);
    P_MSG_FLAG(DONTWAIT);
    P_MSG_FLAG(EOR);
    P_MSG_FLAG(WAITALL);
    P_MSG_FLAG(FIN);
    P_MSG_FLAG(SYN);
    P_MSG_FLAG(CONFIRM);
    P_MSG_FLAG(RST);
    P_MSG_FLAG(ERRQUEUE);
    P_MSG_FLAG(NOSIGNAL);
    P_MSG_FLAG(MORE);
    P_MSG_FLAG(WAITFORONE);
    P_MSG_FLAG(SENDPAGE_NOTLAST);
    P_MSG_FLAG(FASTOPEN);
    P_MSG_FLAG(CMSG_CLOEXEC);
#undef P_MSG_FLAG

    if (flags)
        printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);

    return printed;
}

#define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags