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Differential D21458 Diff 62452 head/sys/kern/vfs_mount.c

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head/sys/kern/vfs_mount.c

Show First 20 Lines • Show All 662 Lines • ▼ Show 20 Linesvfs_donmount(struct thread *td, uint64_t fsflags, struct uio *fsoptions)
/* /*
* We need to see if we have the "update" option * We need to see if we have the "update" option
* before we call vfs_domount(), since vfs_domount() has special * before we call vfs_domount(), since vfs_domount() has special
* logic based on MNT_UPDATE. This is very important * logic based on MNT_UPDATE. This is very important
* when we want to update the root filesystem. * when we want to update the root filesystem.
*/ */
TAILQ_FOREACH_SAFE(opt, optlist, link, tmp_opt) { TAILQ_FOREACH_SAFE(opt, optlist, link, tmp_opt) {
int do_freeopt = 0;
if (strcmp(opt->name, "update") == 0) { if (strcmp(opt->name, "update") == 0) {
fsflags |= MNT_UPDATE; fsflags |= MNT_UPDATE;
vfs_freeopt(optlist, opt); do_freeopt = 1;
} }
else if (strcmp(opt->name, "async") == 0) else if (strcmp(opt->name, "async") == 0)
fsflags |= MNT_ASYNC; fsflags |= MNT_ASYNC;
else if (strcmp(opt->name, "force") == 0) { else if (strcmp(opt->name, "force") == 0) {
fsflags |= MNT_FORCE; fsflags |= MNT_FORCE;
vfs_freeopt(optlist, opt); do_freeopt = 1;
} }
else if (strcmp(opt->name, "reload") == 0) { else if (strcmp(opt->name, "reload") == 0) {
fsflags |= MNT_RELOAD; fsflags |= MNT_RELOAD;
vfs_freeopt(optlist, opt); do_freeopt = 1;
} }
else if (strcmp(opt->name, "multilabel") == 0) else if (strcmp(opt->name, "multilabel") == 0)
fsflags |= MNT_MULTILABEL; fsflags |= MNT_MULTILABEL;
else if (strcmp(opt->name, "noasync") == 0) else if (strcmp(opt->name, "noasync") == 0)
fsflags &= ~MNT_ASYNC; fsflags &= ~MNT_ASYNC;
else if (strcmp(opt->name, "noatime") == 0) else if (strcmp(opt->name, "noatime") == 0)
fsflags |= MNT_NOATIME; fsflags |= MNT_NOATIME;
else if (strcmp(opt->name, "atime") == 0) { else if (strcmp(opt->name, "atime") == 0) {
▲ Show 20 Lines • Show All 44 Lines • ▼ Show 20 Lines TAILQ_FOREACH_SAFE(opt, optlist, link, tmp_opt) {
} }
else if (strcmp(opt->name, "rdonly") == 0) { else if (strcmp(opt->name, "rdonly") == 0) {
free(opt->name, M_MOUNT); free(opt->name, M_MOUNT);
opt->name = strdup("ro", M_MOUNT); opt->name = strdup("ro", M_MOUNT);
fsflags |= MNT_RDONLY; fsflags |= MNT_RDONLY;
autoro = false; autoro = false;
} }
else if (strcmp(opt->name, "autoro") == 0) { else if (strcmp(opt->name, "autoro") == 0) {
vfs_freeopt(optlist, opt); do_freeopt = 1;
autoro = true; autoro = true;
} }
else if (strcmp(opt->name, "suiddir") == 0) else if (strcmp(opt->name, "suiddir") == 0)
fsflags |= MNT_SUIDDIR; fsflags |= MNT_SUIDDIR;
else if (strcmp(opt->name, "sync") == 0) else if (strcmp(opt->name, "sync") == 0)
fsflags |= MNT_SYNCHRONOUS; fsflags |= MNT_SYNCHRONOUS;
else if (strcmp(opt->name, "union") == 0) else if (strcmp(opt->name, "union") == 0)
fsflags |= MNT_UNION; fsflags |= MNT_UNION;
else if (strcmp(opt->name, "automounted") == 0) { else if (strcmp(opt->name, "automounted") == 0) {
fsflags |= MNT_AUTOMOUNTED; fsflags |= MNT_AUTOMOUNTED;
do_freeopt = 1;
} else if (strcmp(opt->name, "nocover") == 0) {
fsflags |= MNT_NOCOVER;
do_freeopt = 1;
} else if (strcmp(opt->name, "cover") == 0) {
fsflags &= ~MNT_NOCOVER;
do_freeopt = 1;
} else if (strcmp(opt->name, "emptydir") == 0) {
fsflags |= MNT_EMPTYDIR;
do_freeopt = 1;
} else if (strcmp(opt->name, "noemptydir") == 0) {
fsflags &= ~MNT_EMPTYDIR;
do_freeopt = 1;
}
if (do_freeopt)
vfs_freeopt(optlist, opt); vfs_freeopt(optlist, opt);
} }
}
/* /*
* Be ultra-paranoid about making sure the type and fspath * Be ultra-paranoid about making sure the type and fspath
* variables will fit in our mp buffers, including the * variables will fit in our mp buffers, including the
* terminating NUL. * terminating NUL.
*/ */
if (fstypelen > MFSNAMELEN || fspathlen > MNAMELEN) { if (fstypelen > MFSNAMELEN || fspathlen > MNAMELEN) {
error = ENAMETOOLONG; error = ENAMETOOLONG;
▲ Show 20 Lines • Show All 118 Lines • ▼ Show 20 Linesvfs_domount_first(
struct vattr va; struct vattr va;
struct mount *mp; struct mount *mp;
struct vnode *newdp; struct vnode *newdp;
int error, error1; int error, error1;
ASSERT_VOP_ELOCKED(vp, __func__); ASSERT_VOP_ELOCKED(vp, __func__);
KASSERT((fsflags & MNT_UPDATE) == 0, ("MNT_UPDATE shouldn't be here")); KASSERT((fsflags & MNT_UPDATE) == 0, ("MNT_UPDATE shouldn't be here"));
if ((fsflags & MNT_EMPTYDIR) != 0) {
error = vfs_emptydir(vp);
if (error != 0) {
vput(vp);
return (error);
}
}
/* /*
* If the jail of the calling thread lacks permission for this type of * If the jail of the calling thread lacks permission for this type of
* file system, deny immediately. * file system, deny immediately.
*/ */
if (jailed(td->td_ucred) && !prison_allow(td->td_ucred, if (jailed(td->td_ucred) && !prison_allow(td->td_ucred,
vfsp->vfc_prison_flag)) { vfsp->vfc_prison_flag)) {
vput(vp); vput(vp);
return (EPERM); return (EPERM);
▲ Show 20 Lines • Show All 324 Lines • ▼ Show 20 Linesvfs_domount(
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1, NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNODE1,
UIO_SYSSPACE, fspath, td); UIO_SYSSPACE, fspath, td);
error = namei(&nd); error = namei(&nd);
if (error != 0) if (error != 0)
return (error); return (error);
NDFREE(&nd, NDF_ONLY_PNBUF); NDFREE(&nd, NDF_ONLY_PNBUF);
vp = nd.ni_vp; vp = nd.ni_vp;
if ((fsflags & MNT_UPDATE) == 0) { if ((fsflags & MNT_UPDATE) == 0) {
if ((vp->v_vflag & VV_ROOT) != 0 &&
(fsflags & MNT_NOCOVER) != 0) {
vput(vp);
return (EBUSY);
}
pathbuf = malloc(MNAMELEN, M_TEMP, M_WAITOK); pathbuf = malloc(MNAMELEN, M_TEMP, M_WAITOK);
strcpy(pathbuf, fspath); strcpy(pathbuf, fspath);
error = vn_path_to_global_path(td, vp, pathbuf, MNAMELEN); error = vn_path_to_global_path(td, vp, pathbuf, MNAMELEN);
/* debug.disablefullpath == 1 results in ENODEV */ /* debug.disablefullpath == 1 results in ENODEV */
if (error == 0 || error == ENODEV) { if (error == 0 || error == ENODEV) {
error = vfs_domount_first(td, vfsp, pathbuf, vp, error = vfs_domount_first(td, vfsp, pathbuf, vp,
fsflags, optlist); fsflags, optlist);
} }
▲ Show 20 Lines • Show All 1,043 Lines • Show Last 20 Lines