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73cdcc6323
Factor Linux specific functionality out of libzfs. Reviewed-by: Allan Jude <allanjude@freebsd.org> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Matthew Macy <mmacy@FreeBSD.org> Closes #9377
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#include <libzfs.h>
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#include "libzfs_impl.h"
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#ifndef F_SETPIPE_SZ
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#define F_SETPIPE_SZ (F_SETLEASE + 7)
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#endif /* F_SETPIPE_SZ */
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#ifndef F_GETPIPE_SZ
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#define F_GETPIPE_SZ (F_GETLEASE + 7)
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#endif /* F_GETPIPE_SZ */
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void
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libzfs_set_pipe_max(int infd)
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{
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FILE *procf = fopen("/proc/sys/fs/pipe-max-size", "r");
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if (procf != NULL) {
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unsigned long max_psize;
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long cur_psize;
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if (fscanf(procf, "%lu", &max_psize) > 0) {
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cur_psize = fcntl(infd, F_GETPIPE_SZ);
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if (cur_psize > 0 &&
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max_psize > (unsigned long) cur_psize)
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fcntl(infd, F_SETPIPE_SZ,
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max_psize);
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}
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fclose(procf);
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}
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}
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