mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-09 23:00:07 +00:00
c6b577caef
The majority of shadow routines are entry points for nss functionality. This commit removes the 'shadow' subdirectory and moves all functionality and tests to 'nss'. References to shadow/ are accordingly changed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/* Copyright (C) 1996-2023 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 <libc-lock.h>
|
|
#include <shadow.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <set-freeres.h>
|
|
|
|
|
|
/* A reasonable size for a buffer to start with. */
|
|
#define BUFLEN_SPWD 1024
|
|
|
|
/* We need to protect the dynamic buffer handling. */
|
|
__libc_lock_define_initialized (static, lock);
|
|
|
|
static char *buffer;
|
|
|
|
/* Read one shadow entry from the given stream. */
|
|
struct spwd *
|
|
fgetspent (FILE *stream)
|
|
{
|
|
static size_t buffer_size;
|
|
static struct spwd resbuf;
|
|
fpos_t pos;
|
|
struct spwd *result;
|
|
int save;
|
|
|
|
if (fgetpos (stream, &pos) != 0)
|
|
return NULL;
|
|
|
|
/* Get lock. */
|
|
__libc_lock_lock (lock);
|
|
|
|
/* Allocate buffer if not yet available. */
|
|
if (buffer == NULL)
|
|
{
|
|
buffer_size = BUFLEN_SPWD;
|
|
buffer = malloc (buffer_size);
|
|
}
|
|
|
|
while (buffer != NULL
|
|
&& (__fgetspent_r (stream, &resbuf, buffer, buffer_size, &result)
|
|
== ERANGE))
|
|
{
|
|
char *new_buf;
|
|
buffer_size += BUFLEN_SPWD;
|
|
new_buf = realloc (buffer, buffer_size);
|
|
if (new_buf == NULL)
|
|
{
|
|
/* We are out of memory. Free the current buffer so that the
|
|
process gets a chance for a normal termination. */
|
|
save = errno;
|
|
free (buffer);
|
|
__set_errno (save);
|
|
}
|
|
buffer = new_buf;
|
|
|
|
/* Reset the stream. */
|
|
if (fsetpos (stream, &pos) != 0)
|
|
buffer = NULL;
|
|
}
|
|
|
|
if (buffer == NULL)
|
|
result = NULL;
|
|
|
|
/* Release lock. Preserve error value. */
|
|
save = errno;
|
|
__libc_lock_unlock (lock);
|
|
__set_errno (save);
|
|
|
|
return result;
|
|
}
|
|
|
|
weak_alias (buffer, __libc_fgetspent_freemem_ptr);
|