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Filelight graphically represents a file system as a set of concentric segmented-rings, indicating where diskspace is being used. Segments expanding from the center represent files (including directories), with each segment's size being proportional to the file's size and directories having child segments. PR: 56152 Submitted by: Markus Brueffer <brueffer@phoenix-systems.de>
154 lines
3.2 KiB
C++
154 lines
3.2 KiB
C++
/* -*-C++-*-
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mntentemu.c++
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Copyright (C) 2002 Alan Eldridge
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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$Id: mntent_compat.cc,v 1.3 2002/09/08 18:42:20 alane Exp $
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2002/09/08 alane@geeksrus.net
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*/
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#ifndef HAVE_MNTENT_H
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#include "config.h"
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#include "mntent.h"
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#include <string>
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// globals (yuck, but easier for debugging)
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mntent G_mntent;
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int G_mntpos;
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int G_mntsize;
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bool G_mntfOpen = false;
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struct statfs *G_pmntstat = 0;
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// map option flags to names
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struct optmap {
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int fl;
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std::string st;
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};
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static struct optmap omap[] = {
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{ MNT_SYNCHRONOUS, "sync" },
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{ MNT_NOEXEC, "noexec" },
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{ MNT_NOSUID, "nosuid" },
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{ MNT_NODEV, "nodev" },
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{ MNT_UNION, "union" },
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{ MNT_ASYNC, "async" },
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{ MNT_NOATIME, "noatime" },
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{ MNT_NOCLUSTERR, "noclusterr" },
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{ MNT_NOCLUSTERW, "noclusterw" },
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{ MNT_NOSYMFOLLOW, "nosymfollow" },
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{ MNT_SUIDDIR, "suiddir" },
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{ 0, "noop" }
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};
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// zap everything for clarity
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void
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mntent::clear()
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{
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memset(mnt_fsname, 0, sizeof(mnt_fsname));
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memset(mnt_dir, 0, sizeof(mnt_dir));
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memset(mnt_type, 0, sizeof(mnt_type));
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memset(mnt_opts, 0, sizeof(mnt_opts));
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mnt_freq = mnt_passno = 0;
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}
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// fake it from a statfs struct
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mntent *
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mntent::from_statfs(struct statfs *pst)
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{
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clear();
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strcpy(mnt_fsname, pst->f_mntfromname);
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strcpy(mnt_dir, pst->f_mntonname);
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strcpy(mnt_type, pst->f_fstypename);
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mnt_freq = mnt_passno = 0;
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std::string opts;
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int fl = pst->f_flags;
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opts += (fl & MNT_RDONLY) ? "ro" : "rw";
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for (optmap *pmp = omap; pmp->fl != 0; pmp++) {
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if ((fl & pmp->fl) != 0) {
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opts += (" " + pmp->st);
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}
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}
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strcpy(mnt_opts, opts.c_str());
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return this;
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}
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// "rewind" the mtab file
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FILE *
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setmntent(const char *, char *)
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{
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if (!G_mntfOpen) {
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G_mntfOpen = true;
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}
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G_mntpos = 0;
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G_mntsize = getmntinfo(&G_pmntstat, MNT_NOWAIT);
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return reinterpret_cast<FILE *>(1);
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}
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// return ptr to opt string if present
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char *
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hasmntopt(const mntent *pmnt, const char *szopt)
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{
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std::string opt(szopt);
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std::string mntopts(pmnt->mnt_opts);
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std::string::size_type pos = mntopts.find(opt);
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const char *szret = (pos == std::string::npos) ? "" : pmnt->mnt_opts + pos;
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return const_cast<char *>(szret);
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}
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// get next mntent until all gone, then return 0
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struct mntent *
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getmntent(FILE *)
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{
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if (!G_mntfOpen) {
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return 0;
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} else if (G_mntpos < G_mntsize) {
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return G_mntent.from_statfs(G_pmntstat + G_mntpos++);
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} else {
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G_mntfOpen = false;
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return 0;
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}
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}
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// "close" the mtab file
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int
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endmntent(FILE *)
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{
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G_mntfOpen = false;
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return 0;
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}
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#endif /* ifndef HAVE_MNTENT_H */
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