diff options
Diffstat (limited to 'REORG.TODO/nss/getnssent.c')
-rw-r--r-- | REORG.TODO/nss/getnssent.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/REORG.TODO/nss/getnssent.c b/REORG.TODO/nss/getnssent.c new file mode 100644 index 0000000000..fdaeed1e7b --- /dev/null +++ b/REORG.TODO/nss/getnssent.c @@ -0,0 +1,57 @@ +/* Copyright (C) 2000-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <stdlib.h> +#include <netdb.h> +#include "nsswitch.h" + +void * +__nss_getent (getent_r_function func, void **resbuf, char **buffer, + size_t buflen, size_t *buffer_size, int *h_errnop) +{ + void *result; + + if (*buffer == NULL) + { + *buffer_size = buflen; + *buffer = malloc (*buffer_size); + } + + while (*buffer != NULL + && func (resbuf, *buffer, *buffer_size, &result, h_errnop) == ERANGE + && (h_errnop == NULL || *h_errnop == NETDB_INTERNAL)) + { + char *new_buf; + *buffer_size *= 2; + 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. */ + int save = errno; + free (*buffer); + __set_errno (save); + } + *buffer = new_buf; + } + + if (*buffer == NULL) + result = NULL; + + return result; +} |