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libzfs: migrate single-use libzfs_set_pipe_max() to libzfs_core

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Notably, this also means that the pipe is expanded before each
dataset is received, so updates to /p/s/f/pipe-max-size are reflected
for each new dataset

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rich Ercolani <rincebrain@gmail.com>
Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13133
This commit is contained in:
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2022-02-20 15:04:49 +01:00
committed by Brian Behlendorf
parent 08eb2309ce
commit 8a3d77358a
6 changed files with 34 additions and 67 deletions
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lib/libzfs/os/linux/libzfs_sendrecv_os.c
-52
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@@ -1,52 +0,0 @@
/*
* 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", "re");
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);
}
}