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/* Generic implementation of fget*ent_r.
Copyright (C) 2020-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <nss_files.h>
#include <stdbool.h>
int
__nss_fgetent_r (FILE *fp, void *result, char *buffer, size_t buffer_length,
nss_files_parse_line parser)
{
int ret;
_IO_flockfile (fp);
while (true)
{
off64_t original_offset;
ret = __nss_readline (fp, buffer, buffer_length, &original_offset);
if (ret == 0)
{
/* Parse the line into *RESULT. */
ret = parser (buffer, result,
(struct parser_data *) buffer, buffer_length, &errno);
/* Translate the result code from the parser into an errno
value. Also seeks back to the start of the line if
necessary. */
ret = __nss_parse_line_result (fp, original_offset, ret);
if (ret == EINVAL)
/* Skip over malformed lines. */
continue;
}
break;
}
_IO_funlockfile (fp);
return ret;
}
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