libexplain/buffer/errno/timerfd_create.c

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/*
 * libexplain - Explain errno values returned by libc functions
 * Copyright (C) 2009, 2010, 2013 Peter Miller
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,but
 * WITHOUT ANY WARRANTY; without even the implied warranty
 * ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNULesser
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <libexplain/ac/errno.h>
#include <libexplain/ac/sys/timerfd.h>

#include <libexplain/buffer/clockid.h>
#include <libexplain/buffer/einval.h>
#include <libexplain/buffer/emfile.h>
#include <libexplain/buffer/enfile.h>
#include <libexplain/buffer/enodev.h>
#include <libexplain/buffer/enomem.h>
#include <libexplain/buffer/enosys.h>
#include <libexplain/buffer/errno/generic.h>
#include <libexplain/buffer/errno/timerfd_create.h>
#include <libexplain/buffer/timerfd_flags.h>
#include <libexplain/explanation.h>


static void
explain_buffer_errno_timerfd_create_system_call(explain_string_buffer_t *sb,
    int errnum, int clockid, int flags)
{
    (void)errnum;
    explain_string_buffer_puts(sb, "timerfd_create(clockid = ");
    explain_buffer_clockid(sb, clockid);
    explain_string_buffer_puts(sb, ", flags = ");
    explain_buffer_timerfd_flags(sb, flags);
    explain_string_buffer_putc(sb, ')');
}


static void
explain_buffer_errno_timerfd_create_explanation(explain_string_buffer_t *sb,
    int errnum, const char *syscall_name, int clockid, int flags)
{
    (void)flags;
    switch (errnum)
    {
    case EINVAL:
        if (clockid != CLOCK_MONOTONIC && clockid != CLOCK_REALTIME)
            explain_buffer_einval_vague(sb, "clockid");
        else
            explain_buffer_einval_bits(sb, "flags");
        break;

    case EMFILE:
        explain_buffer_emfile(sb);
        break;

    case ENFILE:
        explain_buffer_enfile(sb);
        break;

    case ENODEV:
        explain_buffer_enodev_anon_inodes(sb, syscall_name);
        break;

    case ENOMEM:
        explain_buffer_enomem_kernel(sb);
        break;

    case ENOSYS:
#if defined(EOPNOTSUPP) && EOPNOTSUPP != ENOSYS
    case EOPNOTSUPP:
#endif
        explain_buffer_enosys_vague(sb, syscall_name);
        break;

    default:
        explain_buffer_errno_generic(sb, errnum, syscall_name);
        break;
    }
}


void
explain_buffer_errno_timerfd_create(explain_string_buffer_t *sb, int errnum, int
    clockid, int flags)
{
    explain_explanation_t exp;

    explain_explanation_init(&exp, errnum);
    explain_buffer_errno_timerfd_create_system_call
    (
        &exp.system_call_sb,
        errnum,
        clockid,
        flags
    );
    explain_buffer_errno_timerfd_create_explanation
    (
        &exp.explanation_sb,
        errnum,
        "timerfd_create",
        clockid,
        flags
    );
    explain_explanation_assemble(&exp, sb);
}


/* vim: set ts=8 sw=4 et : */