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