57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Generic implementation of fget*ent_r.
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Copyright (C) 2020-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <nss_files.h>
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#include <stdbool.h>
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int
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__nss_fgetent_r (FILE *fp, void *result, char *buffer, size_t buffer_length,
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nss_files_parse_line parser)
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{
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int ret;
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_IO_flockfile (fp);
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while (true)
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{
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off64_t original_offset;
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ret = __nss_readline (fp, buffer, buffer_length, &original_offset);
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if (ret == 0)
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{
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/* Parse the line into *RESULT. */
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ret = parser (buffer, result,
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(struct parser_data *) buffer, buffer_length, &errno);
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/* Translate the result code from the parser into an errno
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value. Also seeks back to the start of the line if
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necessary. */
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ret = __nss_parse_line_result (fp, original_offset, ret);
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if (ret == EINVAL)
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/* Skip over malformed lines. */
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continue;
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}
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break;
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}
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_IO_funlockfile (fp);
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return ret;
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}
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