dockspace.c revision 5c51f1241dbbdf2656d0e10011981411ed0c9673
/*
* 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
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <limits.h>
#include <locale.h>
#include <libintl.h>
#include <pkgstrct.h>
#include "install.h"
#include <pkglib.h>
#include "libadm.h"
#include "libinst.h"
#include "pkginstall.h"
extern struct cfextra **extlist;
extern char pkgloc[];
extern char instdir[];
#define LSIZE 256
#define LIM_BFREE 150LL
#define LIM_FFREE 25LL
#define WRN_STATVFS "WARNING: unable to stat filesystem mounted on <%s>"
#define WRN_NOBLKS "The %s filesystem has %llu free blocks. The current " \
"installation requires %llu blocks, which includes a " \
"required %llu block buffer for open " \
"deleted files. %llu more blocks are needed."
#define WRN_NOFILES "The %s filesystem has %llu free file nodes. The " \
"current installation requires %llu file nodes, " \
"which includes a required %llu file node buffer " \
"for temporary files. %llu more file nodes " \
"are needed."
#define TYPE_BLCK 0
#define TYPE_NODE 1
static void warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail,
fsblkcnt_t limit);
static int fsys_stat(int n);
static int readmap(int *error);
static int readspace(char *spacefile, int *error);
int
dockspace(char *spacefile)
{
struct fstable *fs_tab;
int i, error;
error = 0;
/*
* Also, vanilla SVr4 code used the output from popen()
* on the "/etc/mount" command. However, we need to get more
* information about mounted filesystems, so we use the C
* interfaces to the mount table, which also happens to be
* much faster than running another process. Since several
* of the pkg commands need access to the mount table, this
* code is now in libinst. However, mount table info is needed
* at the time the base directory is determined, so the call
* to get the mount table information is in main.c
*/
if (readmap(&error) || readspace(spacefile, &error))
return (-1);
for (i = 0; fs_tab = get_fs_entry(i); ++i) {
if ((!fs_tab->fused) && (!fs_tab->bused))
continue; /* not used by us */
if (fs_tab->bfree < (LIM_BFREE + fs_tab->bused)) {
warn(TYPE_BLCK, fs_tab->name, fs_tab->bused,
fs_tab->bfree, LIM_BFREE);
error++;
}
/* bug id 1091292 */
if ((long)fs_tab->ffree == -1L)
continue;
if (fs_tab->ffree < (LIM_FFREE + fs_tab->fused)) {
warn(TYPE_NODE, fs_tab->name, fs_tab->fused,
fs_tab->ffree, LIM_FFREE);
error++;
}
}
return (error);
}
static void
warn(int type, char *name, fsblkcnt_t need, fsblkcnt_t avail, fsblkcnt_t limit)
{
logerr(gettext("WARNING:"));
if (type == TYPE_BLCK) {
logerr(gettext(WRN_NOBLKS), name, avail, (need + limit), limit,
(need + limit - avail));
} else {
logerr(gettext(WRN_NOFILES), name, avail, (need + limit), limit,
(need + limit - avail));
}
}
static int
fsys_stat(int n)
{
struct statvfs64 svfsb;
struct fstable *fs_tab;
if (n == BADFSYS)
return (1);
fs_tab = get_fs_entry(n);
/*
* At this point, we know we need information
* about a particular filesystem, so we can do the
* statvfs() now. For performance reasons, we only want to
* stat the filesystem once, at the first time we need to,
* and so we can key on whether or not we have the
* block size for that filesystem.
*/
if (fs_tab->bsize != 0)
return (0);
if (statvfs64(fs_tab->name, &svfsb)) {
logerr(gettext(WRN_STATVFS), fs_tab->name);
return (1);
}
/*
* statvfs returns number of fragment size blocks
* so will change this to number of 512 byte blocks
*/
fs_tab->bsize = svfsb.f_bsize;
fs_tab->frsize = svfsb.f_frsize;
fs_tab->bfree = ((svfsb.f_frsize > 0) ?
howmany(svfsb.f_frsize, DEV_BSIZE) :
howmany(svfsb.f_bsize, DEV_BSIZE)) * svfsb.f_bavail;
fs_tab->ffree = (svfsb.f_favail > 0) ? svfsb.f_favail : svfsb.f_ffree;
return (0);
}
/*
* This function reads all of the package objects, maps them to their target
* filesystems and adds up the amount of space used on each. Wherever you see
* "fsys_value", that's the apparent filesystem which could be a temporary
* loopback mount for the purpose of constructing the client filesystem. It
* isn't necessarily the real target filesystem. Where you see "fsys_base"
* that's the real filesystem to which fsys_value may just refer. If this is
* installing to a standalone or a server, fsys_value will almost always be
* the same as fsys_base.
*/
static int
readmap(int *error)
{
struct fstable *fs_tab;
struct cfextra *ext;
struct cfent *ept;
struct stat statbuf;
char tpath[PATH_MAX];
fsblkcnt_t blk;
int i, n;
/*
* Handle the installation files (ftype i) that are in the
* pkgmap/eptlist.
*/
for (i = 0; (ext = extlist[i]) != NULL; i++) {
ept = &(ext->cf_ent);
if (ept->ftype != 'i')
continue;
/*
* These paths are treated differently from the others
* since their full pathnames are not included in the
* pkgmap.
*/
if (strcmp(ept->path, "pkginfo") == 0)
(void) sprintf(tpath, "%s/%s", pkgloc, ept->path);
else
(void) sprintf(tpath, "%s/install/%s", pkgloc,
ept->path);
/* If we haven't done an fsys() series, do one */
if (ext->fsys_value == BADFSYS)
ext->fsys_value = fsys(tpath);
/*
* Now check if this is a base or apparent filesystem. If
* it's just apparent, get the resolved filesystem entry,
* otherwise, base and value are the same.
*/
if (use_srvr_map_n(ext->fsys_value))
ext->fsys_base = resolved_fsys(tpath);
else
ext->fsys_base = ext->fsys_value;
if (fsys_stat(ext->fsys_base)) {
(*error)++;
continue;
}
/*
* Don't accumulate space requirements on read-only
* remote filesystems.
*/
if (is_remote_fs_n(ext->fsys_value) &&
!is_fs_writeable_n(ext->fsys_value))
continue;
fs_tab = get_fs_entry(ext->fsys_base);
fs_tab->fused++;
if (ept->cinfo.size != BADCONT)
blk = nblk(ept->cinfo.size,
fs_tab->bsize,
fs_tab->frsize);
else
blk = 0;
fs_tab->bused += blk;
}
/*
* Handle the other files in the eptlist.
*/
for (i = 0; (ext = extlist[i]) != NULL; i++) {
ept = &(extlist[i]->cf_ent);
if (ept->ftype == 'i')
continue;
/*
* Don't recalculate package objects that are already in the
* table.
*/
if (ext->mstat.preloaded)
continue;
/*
* Don't accumulate space requirements on read-only
* remote filesystems.
*/
if (is_remote_fs(ept->path, &(ext->fsys_value)) &&
!is_fs_writeable(ept->path, &(ext->fsys_value)))
continue;
/*
* Now check if this is a base or apparent filesystem. If
* it's just apparent, get the resolved filesystem entry,
* otherwise, base and value are the same.
*/
if (use_srvr_map_n(ext->fsys_value))
ext->fsys_base = resolved_fsys(tpath);
else
ext->fsys_base = ext->fsys_value;
/* At this point we know we have a good fsys_base. */
if (fsys_stat(ext->fsys_base)) {
(*error)++;
continue;
}
/*
* We have to stat this path based upon it's real location.
* If this is a server-remap, ept->path isn't the real
* location.
*/
if (use_srvr_map_n(ext->fsys_value))
strcpy(tpath, server_map(ept->path, ext->fsys_value));
else
strcpy(tpath, ept->path);
fs_tab = get_fs_entry(ext->fsys_base);
if (stat(tpath, &statbuf)) {
/* path cannot be accessed */
fs_tab->fused++;
if (strchr("dxs", ept->ftype))
blk =
nblk(fs_tab->bsize,
fs_tab->bsize,
fs_tab->frsize);
else if (ept->cinfo.size != BADCONT)
blk = nblk(ept->cinfo.size,
fs_tab->bsize,
fs_tab->frsize);
else
blk = 0;
} else {
/* path already exists */
if (strchr("dxs", ept->ftype))
blk = 0;
else if (ept->cinfo.size != BADCONT) {
fsblkcnt_t new_size, old_size;
new_size = nblk(ept->cinfo.size,
fs_tab->bsize,
fs_tab->frsize);
old_size = nblk(statbuf.st_size,
fs_tab->bsize,
fs_tab->frsize);
/*
* negative blocks show room freed, but since
* order of installation is uncertain show
* 0 blocks usage
*/
if (new_size < old_size)
blk = 0;
else
blk = new_size - old_size;
} else
blk = 0;
}
fs_tab->bused += blk;
}
return (0);
}
static int
readspace(char *spacefile, int *error)
{
FILE *fp;
char line[LSIZE];
long blocks, nodes;
int n;
if (spacefile == NULL)
return (0);
if ((fp = fopen(spacefile, "r")) == NULL) {
progerr(gettext("unable to open spacefile %s"), spacefile);
return (-1);
}
while (fgets(line, LSIZE, fp)) {
struct fstable *fs_tab;
char *pt, path[PATH_MAX];
blocks = nodes = 0;
for (pt = line; isspace(*pt); /* void */)
pt++;
if (*pt == '#' || *pt == '\0')
continue;
(void) sscanf(line, "%s %ld %ld", path, &blocks, &nodes);
mappath(2, path);
basepath(path, get_basedir(), get_inst_root());
canonize(path);
n = resolved_fsys(path);
if (fsys_stat(n)) {
(*error)++;
continue;
}
/*
* Don't accumulate space requirements on read-only
* remote filesystems. NOTE: For some reason, this
* used to check for !remote && read only. If this
* blows up later, then maybe that was correct -- JST
*/
if (is_remote_fs_n(n) && !is_fs_writeable_n(n))
continue;
fs_tab = get_fs_entry(n);
fs_tab->bused += blocks;
fs_tab->fused += nodes;
}
(void) fclose(fp);
return (0);
}