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/*
* libexplain - a library of system-call-specific strerror replacements
* Copyright (C) 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 of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser 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/acl/libacl.h>
#include <libexplain/ac/errno.h>
#include <libexplain/buffer/acl.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/is_efault.h>
void
explain_buffer_acl(explain_string_buffer_t *sb, acl_t acl)
{
const char *text = 0;
int errno_hold;
if (acl == (acl_t)NULL)
{
explain_string_buffer_puts(sb, "NULL");
return;
}
/*
* The acl_to_any_text and the acl_to_text functions will
* frequently clobber errno, because it uses numerous system
* calls (e.g. looking up user names and group names).
*/
errno_hold = errno;
if (explain_is_efault_pointer(acl, sizeof(void *)))
{
barf:
explain_buffer_pointer(sb, acl);
errno = errno_hold;
return;
}
if (acl_valid(acl) < 0)
goto barf;
#ifdef HAVE_ACL_TO_ANY_TEXT
{
int options = TEXT_ABBREVIATE;
text = acl_to_any_text(acl, NULL, ' ', options);
}
#else
{
ssize_t len = 0;
text = acl_to_text(acl, &len);
}
#endif
if (!text)
goto barf;
explain_string_buffer_puts_quoted(sb, text);
acl_free((void *)text);
errno = errno_hold;
}
/* vim: set ts=8 sw=4 et : */
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