diff options
Diffstat (limited to 'shadow/fgetspent.c')
| -rw-r--r-- | shadow/fgetspent.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/shadow/fgetspent.c b/shadow/fgetspent.c index 902c95e..66a5452 100644 --- a/shadow/fgetspent.c +++ b/shadow/fgetspent.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1999 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 @@ -19,6 +19,7 @@ #include <errno.h> #include <bits/libc-lock.h> #include <shadow.h> +#include <stdio.h> #include <stdlib.h> @@ -28,16 +29,21 @@ /* 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 char *buffer; 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); @@ -49,8 +55,8 @@ fgetspent (FILE *stream) } while (buffer != NULL - && __fgetspent_r (stream, &resbuf, buffer, buffer_size, &result) != 0 - && errno == ERANGE) + && (__fgetspent_r (stream, &resbuf, buffer, buffer_size, &result) + == ERANGE)) { char *new_buf; buffer_size += BUFLEN_SPWD; @@ -64,6 +70,10 @@ fgetspent (FILE *stream) __set_errno (save); } buffer = new_buf; + + /* Reset the stream. */ + if (fsetpos (stream, &pos) != 0) + buffer = NULL; } if (buffer == NULL) @@ -76,3 +86,14 @@ fgetspent (FILE *stream) return result; } + + +/* Free all resources if necessary. */ +static void __attribute__ ((unused)) +free_mem (void) +{ + if (buffer != NULL) + free (buffer); +} + +text_set_element (__libc_subfreeres, free_mem); |