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Diffstat (limited to 'mcon/U/d_pwritev.U')
-rw-r--r-- | mcon/U/d_pwritev.U | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/mcon/U/d_pwritev.U b/mcon/U/d_pwritev.U new file mode 100644 index 0000000..6612cf7 --- /dev/null +++ b/mcon/U/d_pwritev.U @@ -0,0 +1,48 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_pwritev.U,v $ +?RCS: +?MAKE:d_pwritev: Trylink cat i_unistd +?MAKE: -pick add $@ %< +?S:d_pwritev: +?S: This variable conditionally defines the HAS_PWRITEV symbol, which +?S: indicates to the C program that the pwritev() routine is available. +?S:. +?C:HAS_PWRITEV : +?C: This symbol, if defined, indicates that the pwritev routine is +?C: available to perform vectored writes on a file descriptor at a +?C: given offset. +?C:. +?H:#$d_pwritev HAS_PWRITEV /**/ +?H:. +?LINT:set d_pwritev +: see if pwritev exists +$cat >try.c <<EOC +#include <sys/types.h> +#include <sys/uio.h> +#$i_unistd I_UNISTD +#ifdef I_UNISTD +#include <unistd.h> +#endif +int main(void) +{ + static ssize_t ret; + static int fd, iovcnt; + static struct iovec iov; + static off_t offset; + ret |= pwritev(fd, &iov, iovcnt, offset); + return ret ? 0 : 1; +} +EOC +cyn=pwritev +set d_pwritev +eval $trylink + |