581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* Copyright (C) 1994-2022 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/>.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
#include <stdlib.h>
|
|
#include "libioP.h"
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
|
|
/* Read up to (and including) a TERMINATOR from FP into *LINEPTR
|
|
(and null-terminate it). *LINEPTR is a pointer returned from malloc (or
|
|
NULL), pointing to *N characters of space. It is realloc'ed as
|
|
necessary. Returns the number of characters read (not including the
|
|
null terminator), or -1 on error or EOF. */
|
|
|
|
ssize_t
|
|
__getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
|
|
{
|
|
ssize_t result;
|
|
ssize_t cur_len = 0;
|
|
ssize_t len;
|
|
|
|
if (lineptr == NULL || n == NULL)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
CHECK_FILE (fp, -1);
|
|
_IO_acquire_lock (fp);
|
|
if (_IO_ferror_unlocked (fp))
|
|
{
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
|
|
if (*lineptr == NULL || *n == 0)
|
|
{
|
|
*n = 120;
|
|
*lineptr = (char *) malloc (*n);
|
|
if (*lineptr == NULL)
|
|
{
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
}
|
|
|
|
len = fp->_IO_read_end - fp->_IO_read_ptr;
|
|
if (len <= 0)
|
|
{
|
|
if (__underflow (fp) == EOF)
|
|
{
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
len = fp->_IO_read_end - fp->_IO_read_ptr;
|
|
}
|
|
|
|
for (;;)
|
|
{
|
|
size_t needed;
|
|
char *t;
|
|
t = (char *) memchr ((void *) fp->_IO_read_ptr, delimiter, len);
|
|
if (t != NULL)
|
|
len = (t - fp->_IO_read_ptr) + 1;
|
|
if (__glibc_unlikely (len >= SSIZE_MAX - cur_len))
|
|
{
|
|
__set_errno (EOVERFLOW);
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
/* Make enough space for len+1 (for final NUL) bytes. */
|
|
needed = cur_len + len + 1;
|
|
if (needed > *n)
|
|
{
|
|
char *new_lineptr;
|
|
|
|
if (needed < 2 * *n)
|
|
needed = 2 * *n; /* Be generous. */
|
|
new_lineptr = (char *) realloc (*lineptr, needed);
|
|
if (new_lineptr == NULL)
|
|
{
|
|
result = -1;
|
|
goto unlock_return;
|
|
}
|
|
*lineptr = new_lineptr;
|
|
*n = needed;
|
|
}
|
|
memcpy (*lineptr + cur_len, (void *) fp->_IO_read_ptr, len);
|
|
fp->_IO_read_ptr += len;
|
|
cur_len += len;
|
|
if (t != NULL || __underflow (fp) == EOF)
|
|
break;
|
|
len = fp->_IO_read_end - fp->_IO_read_ptr;
|
|
}
|
|
(*lineptr)[cur_len] = '\0';
|
|
result = cur_len;
|
|
|
|
unlock_return:
|
|
_IO_release_lock (fp);
|
|
return result;
|
|
}
|
|
libc_hidden_def (__getdelim)
|
|
weak_alias (__getdelim, getdelim)
|