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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
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/* Copyright (C) 1993-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>.
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As a special exception, if you link the code in this file with
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files compiled with a GNU compiler to produce an executable,
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that does not cause the resulting executable to be covered by
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the GNU Lesser General Public License. This exception does not
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however invalidate any other reasons why the executable file
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might be covered by the GNU Lesser General Public License.
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This exception applies to code released by its copyright holders
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in files containing the exception. */
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#include "libioP.h"
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#include <stdio.h>
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char *
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_IO_fgets (char *buf, int n, FILE *fp)
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{
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size_t count;
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char *result;
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int old_error;
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CHECK_FILE (fp, NULL);
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if (n <= 0)
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return NULL;
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if (__glibc_unlikely (n == 1))
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{
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/* Another irregular case: since we have to store a NUL byte and
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there is only room for exactly one byte, we don't have to
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read anything. */
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buf[0] = '\0';
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return buf;
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}
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_IO_acquire_lock (fp);
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/* This is very tricky since a file descriptor may be in the
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non-blocking mode. The error flag doesn't mean much in this
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case. We return an error only when there is a new error. */
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old_error = fp->_flags & _IO_ERR_SEEN;
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fp->_flags &= ~_IO_ERR_SEEN;
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count = _IO_getline (fp, buf, n - 1, '\n', 1);
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/* If we read in some bytes and errno is EAGAIN, that error will
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be reported for next read. */
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if (count == 0 || ((fp->_flags & _IO_ERR_SEEN) && errno != EAGAIN))
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result = NULL;
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else
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{
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buf[count] = '\0';
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result = buf;
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}
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fp->_flags |= old_error;
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_IO_release_lock (fp);
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return result;
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}
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weak_alias (_IO_fgets, fgets)
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# ifndef _IO_MTSAFE_IO
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strong_alias (_IO_fgets, __fgets_unlocked)
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libc_hidden_def (__fgets_unlocked)
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weak_alias (_IO_fgets, fgets_unlocked)
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libc_hidden_weak (fgets_unlocked)
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# endif
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