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Diffstat (limited to 'contrib/amd/amd/ops_cachefs.c')
| -rw-r--r-- | contrib/amd/amd/ops_cachefs.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/contrib/amd/amd/ops_cachefs.c b/contrib/amd/amd/ops_cachefs.c deleted file mode 100644 index 26a333527457..000000000000 --- a/contrib/amd/amd/ops_cachefs.c +++ /dev/null @@ -1,256 +0,0 @@ -/* - * Copyright (c) 1997-2014 Erez Zadok - * Copyright (c) 1990 Jan-Simon Pendry - * Copyright (c) 1990 Imperial College of Science, Technology & Medicine - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Jan-Simon Pendry at Imperial College, London. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * - * File: am-utils/amd/ops_cachefs.c - * - */ - -/* - * Caching filesystem (Solaris 2.x) - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif /* HAVE_CONFIG_H */ -#include <am_defs.h> -#include <amd.h> - -/* forward declarations */ -static char *cachefs_match(am_opts *fo); -static int cachefs_init(mntfs *mf); -static int cachefs_mount(am_node *am, mntfs *mf); -static int cachefs_umount(am_node *am, mntfs *mf); - - -/* - * Ops structure - */ -am_ops cachefs_ops = -{ - "cachefs", - cachefs_match, - cachefs_init, - cachefs_mount, - cachefs_umount, - amfs_error_lookup_child, - amfs_error_mount_child, - amfs_error_readdir, - 0, /* cachefs_readlink */ - 0, /* cachefs_mounted */ - 0, /* cachefs_umounted */ - amfs_generic_find_srvr, - 0, /* cachefs_get_wchan */ - FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ -#ifdef HAVE_FS_AUTOFS - AUTOFS_CACHEFS_FS_FLAGS, -#endif /* HAVE_FS_AUTOFS */ -}; - - -/* - * Check that f/s has all needed fields. - * Returns: matched string if found, NULL otherwise. - */ -static char * -cachefs_match(am_opts *fo) -{ - /* sanity check */ - if (!fo->opt_rfs || !fo->opt_fs || !fo->opt_cachedir) { - plog(XLOG_USER, "cachefs: must specify cachedir, rfs, and fs"); - return NULL; - } - - dlog("CACHEFS: using cache directory \"%s\"", fo->opt_cachedir); - - /* determine magic cookie to put in mtab */ - return xstrdup(fo->opt_cachedir); -} - - -/* - * Initialize. - * Returns: 0 if OK, non-zero (errno) if failed. - */ -static int -cachefs_init(mntfs *mf) -{ - /* - * Save cache directory name - */ - if (!mf->mf_private) { - mf->mf_private = (voidp) xstrdup(mf->mf_fo->opt_cachedir); - mf->mf_prfree = (void (*)(voidp)) free; - } - - return 0; -} - - -/* - * mntpt is the mount point ($fs) [XXX: was 'dir'] - * backdir is the mounted pathname ($rfs) [XXX: was 'fs_name'] - * cachedir is the cache directory ($cachedir) - */ -static int -mount_cachefs(char *mntdir, char *backdir, char *cachedir, - char *opts, int on_autofs) -{ - cachefs_args_t ca; - mntent_t mnt; - int flags; - char *cp; - MTYPE_TYPE type = MOUNT_TYPE_CACHEFS; /* F/S mount type */ - - memset((voidp) &ca, 0, sizeof(ca)); /* Paranoid */ - - /* - * Fill in the mount structure - */ - memset((voidp) &mnt, 0, sizeof(mnt)); - mnt.mnt_dir = mntdir; - mnt.mnt_fsname = backdir; - mnt.mnt_type = MNTTAB_TYPE_CACHEFS; - mnt.mnt_opts = opts; - - flags = compute_mount_flags(&mnt); -#ifdef HAVE_FS_AUTOFS - if (on_autofs) - flags |= autofs_compute_mount_flags(&mnt); -#endif /* HAVE_FS_AUTOFS */ - - /* Fill in cachefs mount arguments */ - - /* - * XXX: Caveats - * (1) cache directory is NOT checked for sanity beforehand, nor is it - * purged. Maybe it should be purged first? - * (2) cache directory is NOT locked. Should we? - */ - - /* mount flags */ - ca.cfs_options.opt_flags = CFS_WRITE_AROUND | CFS_ACCESS_BACKFS; - /* cache population size */ - ca.cfs_options.opt_popsize = DEF_POP_SIZE; /* default: 64K */ - /* filegrp size */ - ca.cfs_options.opt_fgsize = DEF_FILEGRP_SIZE; /* default: 256 */ - - /* CFS ID for file system (must be unique) */ - ca.cfs_fsid = cachedir; - - /* CFS fscdir name */ - memset(ca.cfs_cacheid, 0, sizeof(ca.cfs_cacheid)); - /* - * Append cacheid and mountpoint. - * sizeof(cfs_cacheid) should be C_MAX_MOUNT_FSCDIRNAME as per - * <sys/fs/cachefs_fs.h> (checked on Solaris 8). - */ - xsnprintf(ca.cfs_cacheid, sizeof(ca.cfs_cacheid), - "%s:%s", ca.cfs_fsid, mntdir); - /* convert '/' to '_' (Solaris does that...) */ - cp = ca.cfs_cacheid; - while ((cp = strpbrk(cp, "/")) != NULL) - *cp = '_'; - - /* path for this cache dir */ - ca.cfs_cachedir = cachedir; - - /* back filesystem dir */ - ca.cfs_backfs = backdir; - - /* same as nfs values (XXX: need to handle these options) */ - ca.cfs_acregmin = 0; - ca.cfs_acregmax = 0; - ca.cfs_acdirmin = 0; - ca.cfs_acdirmax = 0; - - /* - * Call generic mount routine - */ - return mount_fs(&mnt, flags, (caddr_t) &ca, 0, type, 0, NULL, mnttab_file_name, on_autofs); -} - - -static int -cachefs_mount(am_node *am, mntfs *mf) -{ - int on_autofs = mf->mf_flags & MFF_ON_AUTOFS; - int error; - - error = mount_cachefs(mf->mf_mount, - mf->mf_fo->opt_rfs, - mf->mf_fo->opt_cachedir, - mf->mf_mopts, - on_autofs); - if (error) { - errno = error; - /* according to Solaris, if errno==ESRCH, "options to not match" */ - if (error == ESRCH) - plog(XLOG_ERROR, "mount_cachefs: options to no match: %m"); - else - plog(XLOG_ERROR, "mount_cachefs: %m"); - return error; - } - - return 0; -} - - -static int -cachefs_umount(am_node *am, mntfs *mf) -{ - int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; - int error; - - error = UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); - - /* - * In the case of cachefs, we must fsck the cache directory. Otherwise, - * it will remain inconsistent, and the next cachefs mount will fail - * with the error "no space left on device" (ENOSPC). - * - * XXX: this is hacky! use fork/exec/wait instead... - */ - if (!error) { - char *cachedir = NULL; - char cmd[128]; - - cachedir = (char *) mf->mf_private; - plog(XLOG_INFO, "running fsck on cache directory \"%s\"", cachedir); - xsnprintf(cmd, sizeof(cmd), "fsck -F cachefs %s", cachedir); - system(cmd); - } - - return error; -} |