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fusefs: reap dead sysctls

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Remove the "sync_unmount" and "init_backgrounded" sysctls and the associated
options from mount_fusefs.  Add no backwards-compatibility hidden options to
mount_fusefs because these options never had any effect, and are therefore
unlikely to be used.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
asomers 2019-05-13 19:03:46 +00:00
parent f497856c9a
commit 1e35976df1
4 changed files with 7 additions and 28 deletions
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5
UPDATING
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@ -31,6 +31,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 13.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20190513:
The "-o sync_unmount" and "-o init_backgrounded" options have been
removed from mount_fusefs(8). You can safely remove them from your
scripts, because they had no effect.
20190507:
The IPSEC option has been removed from GENERIC. Users requiring
ipsec(4) must now load the ipsec(4) kernel module.

22
sbin/mount_fusefs/mount_fusefs.c
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@ -60,7 +60,6 @@ void __usage_short(void);
void usage(void);
void helpmsg(void);
void showversion(void);
int init_backgrounded(void);
static struct mntopt mopts[] = {
#define ALTF_PRIVATE 0x01
@ -73,8 +72,6 @@ static struct mntopt mopts[] = {
{ "max_read=", 0, ALTF_MAXREAD, 1 },
#define ALTF_SUBTYPE 0x40
{ "subtype=", 0, ALTF_SUBTYPE, 1 },
#define ALTF_SYNC_UNMOUNT 0x80
{ "sync_unmount", 0, ALTF_SYNC_UNMOUNT, 1 },
/*
* MOPT_AUTOMOUNTED, included by MOPT_STDOPTS, does not fit into
* the 'flags' argument to nmount(2). We have to abuse altflags
@ -107,7 +104,7 @@ static struct mntval mvals[] = {
{ 0, NULL, 0 }
};
#define DEFAULT_MOUNT_FLAGS ALTF_PRIVATE | ALTF_SYNC_UNMOUNT
#define DEFAULT_MOUNT_FLAGS ALTF_PRIVATE
int
main(int argc, char *argv[])
@ -409,7 +406,7 @@ main(int argc, char *argv[])
}
}
if (fd >= 0 && ! init_backgrounded() && close(fd) < 0) {
if (fd >= 0 && close(fd) < 0) {
if (pid)
kill(pid, SIGKILL);
err(1, "failed to close fuse device");
@ -481,7 +478,6 @@ helpmsg(void)
" -o neglect_shares don't report EBUSY when unmount attempted\n"
" in presence of secondary mounts\n"
" -o push_symlinks_in prefix absolute symlinks with mountpoint\n"
" -o sync_unmount do unmount synchronously\n"
);
exit(EX_USAGE);
}
@ -492,17 +488,3 @@ showversion(void)
puts("mount_fusefs [fuse4bsd] version: " FUSE4BSD_VERSION);
exit(EX_USAGE);
}
int
init_backgrounded(void)
{
int ibg;
size_t len;
len = sizeof(ibg);
if (sysctlbyname("vfs.fusefs.init_backgrounded", &ibg, &len, NULL, 0))
return (0);
return (ibg);
}

2
share/man/man5/fusefs.5
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@ -101,9 +101,7 @@ misbehaving.
.\"
.\" vfs.fusefs.version - useless since the driver moved in-tree
.\" vfs.fusefs.reclaim_revoked: I don't understand it well-enough
.\" vfs.fusefs.sync_unmount: dead code
.\" vfs.fusefs.enforce_dev_perms: I don't understand it well enough.
.\" vfs.fusefs.init_backgrounded: dead code
.\" vfs.fusefs.iov_credit: I don't understand it well enough
.\" vfs.fusefs.iov_permanent_bufsize: I don't understand it well enough
.\" vfs.fusefs.fix_broken_io: I don't understand it well enough

6
sys/fs/fuse/fuse_vfsops.c
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@ -119,17 +119,11 @@ struct vfsops fuse_vfsops = {
.vfs_statfs = fuse_vfsop_statfs,
};
SYSCTL_INT(_vfs_fusefs, OID_AUTO, init_backgrounded, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, 1, "indicate async handshake");
static int fuse_enforce_dev_perms = 0;
SYSCTL_INT(_vfs_fusefs, OID_AUTO, enforce_dev_perms, CTLFLAG_RW,
&fuse_enforce_dev_perms, 0,
"enforce fuse device permissions for secondary mounts");
static unsigned sync_unmount = 1;
SYSCTL_UINT(_vfs_fusefs, OID_AUTO, sync_unmount, CTLFLAG_RW,
&sync_unmount, 0, "specify when to use synchronous unmount");
MALLOC_DEFINE(M_FUSEVFS, "fuse_filesystem", "buffer for fuse vfs layer");