115 lines
3.4 KiB
Diff
115 lines
3.4 KiB
Diff
From 74250a7cdf106d4ca7d9506e6d5dc7c448dc3434 Mon Sep 17 00:00:00 2001
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From: David Michael <david.michael@coreos.com>
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Date: Thu, 15 Dec 2016 15:22:57 -0800
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Subject: [PATCH] gshadow: Sync fgetsgent_r.c with grp/fgetgrent_r.c
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[BZ #20338]
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* gshadow/fgetsgent_r.c: Include <libio/iolibio.h>.
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(flockfile): New macro.
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(funlockfile): Likewise.
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(__fgetsgent_r): Sync with __fgetgrent_r.
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* nss/nss_files/files-sgrp.c: Fix "fgetsgent_r.c" typo.
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---
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gshadow/fgetsgent_r.c | 35 ++++++++++++++++++++++++-----------
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nss/nss_files/files-sgrp.c | 2 +-
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2 files changed, 25 insertions(+), 12 deletions(-)
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diff --git a/gshadow/fgetsgent_r.c b/gshadow/fgetsgent_r.c
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index b70f6fa..02cd33a 100644
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--- a/gshadow/fgetsgent_r.c
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+++ b/gshadow/fgetsgent_r.c
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@@ -20,39 +20,44 @@
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#include <gshadow.h>
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#include <stdio.h>
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+#include <libio/iolibio.h>
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+#define flockfile(s) _IO_flockfile (s)
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+#define funlockfile(s) _IO_funlockfile (s)
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+
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/* Define a line parsing function using the common code
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used in the nss_files module. */
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#define STRUCTURE sgrp
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#define ENTNAME sgent
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-#define EXTERN_PARSER 1
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+#define EXTERN_PARSER 1
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struct sgent_data {};
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#include <nss/nss_files/files-parse.c>
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-/* Read one shadow entry from the given stream. */
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+/* Read one entry from the given stream. */
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int
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__fgetsgent_r (FILE *stream, struct sgrp *resbuf, char *buffer, size_t buflen,
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struct sgrp **result)
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{
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char *p;
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+ int parse_result;
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- _IO_flockfile (stream);
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+ flockfile (stream);
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do
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{
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buffer[buflen - 1] = '\xff';
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p = fgets_unlocked (buffer, buflen, stream);
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- if (p == NULL && feof_unlocked (stream))
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+ if (__builtin_expect (p == NULL, 0) && feof_unlocked (stream))
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{
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- _IO_funlockfile (stream);
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+ funlockfile (stream);
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*result = NULL;
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__set_errno (ENOENT);
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return errno;
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}
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- if (p == NULL || buffer[buflen - 1] != '\xff')
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+ if (__builtin_expect (p == NULL, 0) || buffer[buflen - 1] != '\xff')
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{
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- _IO_funlockfile (stream);
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+ funlockfile (stream);
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*result = NULL;
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__set_errno (ERANGE);
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return errno;
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@@ -61,13 +66,21 @@ __fgetsgent_r (FILE *stream, struct sgrp *resbuf, char *buffer, size_t buflen,
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/* Skip leading blanks. */
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while (isspace (*p))
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++p;
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- } while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
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+ } while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */
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/* Parse the line. If it is invalid, loop to
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get the next line of the file to parse. */
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- ! parse_line (buffer, (void *) resbuf, (void *) buffer, buflen,
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- &errno));
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+ || ! (parse_result = parse_line (p, resbuf,
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+ (void *) buffer, buflen,
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+ &errno)));
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+
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+ funlockfile (stream);
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- _IO_funlockfile (stream);
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+ if (__builtin_expect (parse_result, 0) == -1)
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+ {
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+ /* The parser ran out of space. */
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+ *result = NULL;
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+ return errno;
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+ }
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*result = resbuf;
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return 0;
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diff --git a/nss/nss_files/files-sgrp.c b/nss/nss_files/files-sgrp.c
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index 15dc659..05c3805 100644
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--- a/nss/nss_files/files-sgrp.c
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+++ b/nss/nss_files/files-sgrp.c
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@@ -23,7 +23,7 @@
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#define DATABASE "gshadow"
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struct sgent_data {};
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-/* Our parser function is already defined in sgetspent_r.c, so use that
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+/* Our parser function is already defined in sgetsgent_r.c, so use that
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to parse lines from the database file. */
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#define EXTERN_PARSER
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#include "files-parse.c"
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--
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2.7.4
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