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Code Issues Releases Activity

If we need to hide fsid, kern_statfs()/kern_fstatfs() will do it for us,

Browse Source 
so do not duplicate the code in cvtstatfs().
Note, that we now need to clear fsid in freebsd4_getfsstat().

This moves all security related checks from functions like cvtstatfs()
and will allow to add more security related stuff (like statfs(2), etc.
protection for jails) a bit easier.
This commit is contained in:
Pawel Jakub Dawidek 2005-05-22 21:52:30 +00:00
parent 10c447fac2
commit a0e96a49df
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=146502
3 changed files with 8 additions and 17 deletions
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9
sys/compat/linux/linux_stats.c
View File

@ -237,13 +237,8 @@ bsd_to_linux_statfs(struct thread *td, struct statfs *bsd_statfs,
linux_statfs->f_bavail = bsd_statfs->f_bavail;
linux_statfs->f_ffree = bsd_statfs->f_ffree;
linux_statfs->f_files = bsd_statfs->f_files;
if (suser(td)) {
linux_statfs->f_fsid.val[0] = 0;
linux_statfs->f_fsid.val[1] = 0;
} else {
linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
}
linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
linux_statfs->f_namelen = MAXNAMLEN;
}

8
sys/kern/vfs_extattr.c
View File

@ -557,6 +557,8 @@ freebsd4_getfsstat(td, uap)
}
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
cvtstatfs(td, sp, &osb);
if (suser(td))
osb.f_fsid.val[0] = osb.f_fsid.val[1] = 0;
error = copyout(&osb, sfsp, sizeof(osb));
if (error) {
vfs_unbusy(mp, td);
@ -639,11 +641,7 @@ cvtstatfs(td, nsp, osp)
MIN(MFSNAMELEN, OMNAMELEN));
bcopy(nsp->f_mntfromname, osp->f_mntfromname,
MIN(MFSNAMELEN, OMNAMELEN));
if (suser(td)) {
osp->f_fsid.val[0] = osp->f_fsid.val[1] = 0;
} else {
osp->f_fsid = nsp->f_fsid;
}
osp->f_fsid = nsp->f_fsid;
}
#endif /* COMPAT_FREEBSD4 */

8
sys/kern/vfs_syscalls.c
View File

@ -557,6 +557,8 @@ freebsd4_getfsstat(td, uap)
}
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
cvtstatfs(td, sp, &osb);
if (suser(td))
osb.f_fsid.val[0] = osb.f_fsid.val[1] = 0;
error = copyout(&osb, sfsp, sizeof(osb));
if (error) {
vfs_unbusy(mp, td);
@ -639,11 +641,7 @@ cvtstatfs(td, nsp, osp)
MIN(MFSNAMELEN, OMNAMELEN));
bcopy(nsp->f_mntfromname, osp->f_mntfromname,
MIN(MFSNAMELEN, OMNAMELEN));
if (suser(td)) {
osp->f_fsid.val[0] = osp->f_fsid.val[1] = 0;
} else {
osp->f_fsid = nsp->f_fsid;
}
osp->f_fsid = nsp->f_fsid;
}
#endif /* COMPAT_FREEBSD4 */