pkey_alloc.c

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/*
 * trace/beauty/pkey_alloc.c
 *
 *  Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Released under the GPL v2. (and only v2, not any later version)
 */

#include "trace/beauty/beauty.h"
#include <linux/kernel.h>
#include <linux/log2.h>

static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size)
{
    int i, printed = 0;

#include "trace/beauty/generated/pkey_alloc_access_rights_array.c"
    static DEFINE_STRARRAY(pkey_alloc_access_rights);

    if (access_rights == 0) {
        const char *s = strarray__pkey_alloc_access_rights.entries[0];
        if (s)
            return scnprintf(bf, size, "%s", s);
        return scnprintf(bf, size, "%d", 0);
    }

    for (i = 1; i < strarray__pkey_alloc_access_rights.nr_entries; ++i) {
        int bit = 1 << (i - 1);

        if (!(access_rights & bit))
            continue;

        if (printed != 0)
            printed += scnprintf(bf + printed, size - printed, "|");

        if (strarray__pkey_alloc_access_rights.entries[i] != NULL)
            printed += scnprintf(bf + printed, size - printed, "%s", strarray__pkey_alloc_access_rights.entries[i]);
        else
            printed += scnprintf(bf + printed, size - printed, "0x%#", bit);
    }

    return printed;
}

size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg)
{
    unsigned long cmd = arg->val;

    return pkey_alloc__scnprintf_access_rights(cmd, bf, size);
}