view modules/linkat @ 40214:452ab00796c7

Fix undefined behaviour. * lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to 'unsigned int', to avoid shift operations on 'int'. * lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size. * tests/test-count-leading-zeros.c (main): Use a random number that has as many bits as TYPE, not only 2*15 or 2*31 bits. * tests/test-count-trailing-zeros.c (main): Likewise. * tests/test-count-one-bits.c (main): Likewise. * tests/test-memmem.c: Don't include "null-ptr.h". (main): Use zerosize_ptr() instead of null_ptr(). * modules/memmem-tests (Files): Remove tests/null-ptr.h.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 20:32:25 +0100
parents 461b92d0b2eb
children
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Description:
linkat() function: create a hard link, relative to two directories

Files:
lib/at-func2.c
lib/linkat.c
m4/linkat.m4

Depends-on:
unistd
extensions
dirname-lgpl     [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
errno            [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
fcntl-h          [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
filenamecat-lgpl [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
link-follow      [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
areadlink        [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
at-internal      [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
dosname          [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
fstat            [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
getcwd-lgpl      [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
openat-h         [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
openat-die       [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
link             [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
lstat            [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
same-inode       [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
save-cwd         [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
symlink          [test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1]
areadlinkat      [test $REPLACE_LINKAT = 1]
fstatat          [test $REPLACE_LINKAT = 1]

configure.ac:
gl_FUNC_LINKAT
if test $HAVE_LINKAT = 0 || test $REPLACE_LINKAT = 1; then
  AC_LIBOBJ([linkat])
  AC_LIBOBJ([at-func2])
fi
gl_UNISTD_MODULE_INDICATOR([linkat])

Makefile.am:

Include:
<fcntl.h>
<unistd.h>

License:
GPL

Maintainer:
Jim Meyering, Eric Blake