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From 9980bf0b307368959cb29f3ca3f7446ad92347f1 Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Thu, 16 Jul 2020 16:55:45 +0200
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Subject: [PATCH 04/11] nss_files: Use generic result pointer in parse_line
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As a result, all parse_line functions have the same prototype, except
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for that producing struct hostent. This change is ABI-compatible, so
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it does not alter the internal GLIBC_PRIVATE ABI (otherwise we should
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probably have renamed the exported functions).
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A future change will use this to implement a generict fget*ent_r
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function.
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Tested-by: Carlos O'Donell <carlos@redhat.com>
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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---
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include/nss_files.h | 48 ++++++++++++---------------------------------
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nss/nss_files/files-parse.c | 5 +++--
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2 files changed, 15 insertions(+), 38 deletions(-)
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diff --git a/include/nss_files.h b/include/nss_files.h
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index 54b354a..d0f2681 100644
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--- a/include/nss_files.h
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+++ b/include/nss_files.h
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@@ -26,45 +26,21 @@ FILE *__nss_files_fopen (const char *path);
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libc_hidden_proto (__nss_files_fopen)
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struct parser_data;
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-struct etherent;
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-struct group;
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-struct netent;
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-struct passwd;
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-struct protoent;
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-struct rpcent;
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-struct servent;
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-struct sgrp;
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-struct spwd;
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/* Instances of the parse_line function from
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nss/nss_files/files-parse.c. */
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-extern int _nss_files_parse_etherent (char *line, struct etherent *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_grent (char *line, struct group *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_netent (char *line, struct netent *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_protoent (char *line, struct protoent *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_pwent (char *line, struct passwd *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_rpcent (char *line, struct rpcent *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_servent (char *line, struct servent *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_sgent (char *line, struct sgrp *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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-extern int _nss_files_parse_spent (char *line, struct spwd *result,
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- struct parser_data *data,
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- size_t datalen, int *errnop);
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+typedef int nss_files_parse_line (char *line, void *result,
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+ struct parser_data *data,
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+ size_t datalen, int *errnop);
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+extern nss_files_parse_line _nss_files_parse_etherent;
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+extern nss_files_parse_line _nss_files_parse_grent;
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+extern nss_files_parse_line _nss_files_parse_netent;
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+extern nss_files_parse_line _nss_files_parse_protoent;
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+extern nss_files_parse_line _nss_files_parse_pwent;
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+extern nss_files_parse_line _nss_files_parse_rpcent;
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+extern nss_files_parse_line _nss_files_parse_servent;
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+extern nss_files_parse_line _nss_files_parse_sgent;
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+extern nss_files_parse_line _nss_files_parse_spent;
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libnss_files_hidden_proto (_nss_files_parse_etherent)
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libc_hidden_proto (_nss_files_parse_grent)
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diff --git a/nss/nss_files/files-parse.c b/nss/nss_files/files-parse.c
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index 3820287..c6cd43b 100644
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--- a/nss/nss_files/files-parse.c
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+++ b/nss/nss_files/files-parse.c
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@@ -87,7 +87,7 @@ struct parser_data
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#ifdef EXTERN_PARSER
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/* The parser is defined in a different module. */
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-extern int parse_line (char *line, struct STRUCTURE *result,
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+extern int parse_line (char *line, void *result,
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struct parser_data *data, size_t datalen, int *errnop
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EXTRA_ARGS_DECL);
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@@ -99,10 +99,11 @@ extern int parse_line (char *line, struct STRUCTURE *result,
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# define LINE_PARSER(EOLSET, BODY) \
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parser_stclass int \
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-parse_line (char *line, struct STRUCTURE *result, \
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+parse_line (char *line, void *generic_result, \
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struct parser_data *data, size_t datalen, int *errnop \
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EXTRA_ARGS_DECL) \
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{ \
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+ struct STRUCTURE *result = generic_result; \
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ENTDATA_DECL (data) \
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BUFFER_PREPARE \
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char *p = strpbrk (line, EOLSET "\n"); \
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--
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1.8.3.1
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