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
81 lines
2 KiB
C
81 lines
2 KiB
C
/* Test setvbuf on readonly fopen (using mmap stdio).
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Copyright (C) 2002-2022 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int main (void)
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{
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char name[] = "/tmp/tst-mmap-setvbuf.XXXXXX";
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char buf[4096];
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const char * const test = "Let's see if mmap stdio works with setvbuf.\n";
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char temp[strlen (test) + 1];
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int fd = mkstemp (name);
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FILE *f;
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if (fd == -1)
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{
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printf ("%u: cannot open temporary file: %m\n", __LINE__);
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exit (1);
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}
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f = fdopen (fd, "w");
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if (f == NULL)
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{
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printf ("%u: cannot fdopen temporary file: %m\n", __LINE__);
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exit (1);
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}
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fputs (test, f);
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fclose (f);
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f = fopen (name, "rm");
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if (f == NULL)
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{
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printf ("%u: cannot fopen temporary file: %m\n", __LINE__);
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exit (1);
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}
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if (setvbuf (f, buf, _IOFBF, sizeof buf))
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{
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printf ("%u: setvbuf failed: %m\n", __LINE__);
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exit (1);
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}
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if (fread (temp, 1, strlen (test), f) != strlen (test))
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{
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printf ("%u: couldn't read the file back: %m\n", __LINE__);
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exit (1);
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}
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temp [strlen (test)] = '\0';
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if (strcmp (test, temp))
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{
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printf ("%u: read different string than was written:\n%s%s",
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__LINE__, test, temp);
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exit (1);
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}
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fclose (f);
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unlink (name);
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exit (0);
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}
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