static int
zpl_mknod(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
dev_t rdev)
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
/*
* We currently expect Linux to supply rdev=0 for all sockets
* and fifos, but we want to know if this behavior ever changes.
*/
if (S_ISSOCK(mode) || S_ISFIFO(mode))
ASSERT(rdev == 0);
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, dentry, mode, cr);
vap->va_rdev = rdev;
error = -zfs_create(dir, (char *)dentry->d_name.name,
vap, 0, mode, &ip, cr, 0, NULL);
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (-error);
}
zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
bool flag)
#endif
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
fstrans_cookie_t cookie;
crhold(cr);
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, mode, cr);
cookie = spl_fstrans_mark();
error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
if (error == 0) {
d_instantiate(dentry, ip);
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
if (error == 0)
error = zpl_init_acl(ip, dir);
if (error)
(void) zfs_remove(dir, dname(dentry), cr, 0);
}
spl_fstrans_unmark(cookie);
kmem_free(vap, sizeof (vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = mode;
vap->va_mask = ATTR_MODE;
vap->va_rdev = rdev;
vap->va_uid = crgetfsuid(cr);
vap->va_gid = crgetfsgid(cr);
vap->va_dentry = dentry;
error = -zfs_create(dir, (char *)dentry->d_name.name,
vap, 0, mode, &ip, cr, 0, NULL);
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (-error);
}
static int
zpl_mknod(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
dev_t rdev)
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
fstrans_cookie_t cookie;
/*
* We currently expect Linux to supply rdev=0 for all sockets
* and fifos, but we want to know if this behavior ever changes.
*/
if (S_ISSOCK(mode) || S_ISFIFO(mode))
ASSERT(rdev == 0);
crhold(cr);
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, mode, cr);
vap->va_rdev = rdev;
cookie = spl_fstrans_mark();
error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
if (error == 0) {
d_instantiate(dentry, ip);
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
if (error == 0)
error = zpl_init_acl(ip, dir);
if (error)
(void) zfs_remove(dir, dname(dentry), cr, 0);
}
spl_fstrans_unmark(cookie);
kmem_free(vap, sizeof (vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
struct nameidata *nd)
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, dentry, mode, cr);
error = -zfs_create(dir, (char *)dentry->d_name.name,
vap, 0, mode, &ip, cr, 0, NULL);
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_xattr_set_dir(struct inode *ip, const char *name, const void *value,
size_t size, int flags, cred_t *cr)
{
struct inode *dxip = NULL;
struct inode *xip = NULL;
vattr_t *vap = NULL;
ssize_t wrote;
int lookup_flags, error;
const int xattr_mode = S_IFREG | 0644;
/*
* Lookup the xattr directory. When we're adding an entry pass
* CREATE_XATTR_DIR to ensure the xattr directory is created.
* When removing an entry this flag is not passed to avoid
* unnecessarily creating a new xattr directory.
*/
lookup_flags = LOOKUP_XATTR;
if (value != NULL)
lookup_flags |= CREATE_XATTR_DIR;
error = -zfs_lookup(ip, NULL, &dxip, lookup_flags, cr, NULL, NULL);
if (error)
goto out;
/* Lookup a specific xattr name in the directory */
error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL);
if (error && (error != -ENOENT))
goto out;
error = 0;
/* Remove a specific name xattr when value is set to NULL. */
if (value == NULL) {
if (xip)
error = -zfs_remove(dxip, (char *)name, cr);
goto out;
}
/* Lookup failed create a new xattr. */
if (xip == NULL) {
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = xattr_mode;
vap->va_mask = ATTR_MODE;
vap->va_uid = crgetfsuid(cr);
vap->va_gid = crgetfsgid(cr);
error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip,
cr, 0, NULL);
if (error)
goto out;
}
ASSERT(xip != NULL);
error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE);
if (error)
goto out;
wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr);
if (wrote < 0)
error = wrote;
out:
if (vap)
kmem_free(vap, sizeof(vattr_t));
if (xip)
iput(xip);
if (dxip)
iput(dxip);
if (error == -ENOENT)
error = -ENODATA;
ASSERT3S(error, <=, 0);
return (error);
}
static int
zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap)
{
char *name = NULL; /* location determined later */
char *link; /* symlink content follows name */
znode_t *dzp;
struct inode *ip = NULL;
xvattr_t xva;
int vflg = 0;
size_t lrsize = sizeof (lr_create_t);
lr_attr_t *lrattr;
void *start;
size_t xvatlen;
uint64_t txtype;
uint64_t objid;
uint64_t dnodesize;
int error;
txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
}
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
objid = LR_FOID_GET_OBJ(lr->lr_foid);
dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
xva_init(&xva);
zfs_init_vattr(&xva.xva_vattr, ATTR_MODE | ATTR_UID | ATTR_GID,
lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
/*
* All forms of zfs create (create, mkdir, mkxattrdir, symlink)
* eventually end up in zfs_mknode(), which assigns the object's
* creation time, generation number, and dnode slot count. The
* generic zfs_create() has no concept of these attributes, so
* we smuggle the values inside * the vattr's otherwise unused
* va_ctime, va_nblocks, and va_nlink fields.
*/
ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
xva.xva_vattr.va_nblocks = lr->lr_gen;
xva.xva_vattr.va_fsid = dnodesize;
error = dmu_object_info(zfsvfs->z_os, objid, NULL);
if (error != ENOENT)
goto out;
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
/*
* Symlinks don't have fuid info, and CIFS never creates
* symlinks.
*
* The _ATTR versions will grab the fuid info in their subcases.
*/
if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
(int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
(int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
start = (lr + 1);
zfsvfs->z_fuid_replay =
zfs_replay_fuid_domain(start, &start,
lr->lr_uid, lr->lr_gid);
}
switch (txtype) {
case TX_CREATE_ATTR:
lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
start = (caddr_t)(lr + 1) + xvatlen;
zfsvfs->z_fuid_replay =
zfs_replay_fuid_domain(start, &start,
lr->lr_uid, lr->lr_gid);
name = (char *)start;
/*FALLTHROUGH*/
case TX_CREATE:
if (name == NULL)
name = (char *)start;
error = zfs_create(ZTOI(dzp), name, &xva.xva_vattr,
0, 0, &ip, kcred, vflg, NULL);
break;
case TX_MKDIR_ATTR:
lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
start = (caddr_t)(lr + 1) + xvatlen;
zfsvfs->z_fuid_replay =
zfs_replay_fuid_domain(start, &start,
lr->lr_uid, lr->lr_gid);
name = (char *)start;
/*FALLTHROUGH*/
case TX_MKDIR:
if (name == NULL)
name = (char *)(lr + 1);
error = zfs_mkdir(ZTOI(dzp), name, &xva.xva_vattr,
&ip, kcred, vflg, NULL);
break;
case TX_MKXATTR:
error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &ip, kcred);
break;
case TX_SYMLINK:
name = (char *)(lr + 1);
link = name + strlen(name) + 1;
error = zfs_symlink(ZTOI(dzp), name, &xva.xva_vattr,
link, &ip, kcred, vflg);
break;
default:
error = SET_ERROR(ENOTSUP);
}
out:
if (error == 0 && ip != NULL)
iput(ip);
iput(ZTOI(dzp));
if (zfsvfs->z_fuid_replay)
zfs_fuid_info_free(zfsvfs->z_fuid_replay);
zfsvfs->z_fuid_replay = NULL;
return (error);
}
/*
* Replay file create with optional ACL, xvattr information as well
* as option FUID information.
*/
static int
zfs_replay_create_acl(zfsvfs_t *zfsvfs,
lr_acl_create_t *lracl, boolean_t byteswap)
{
char *name = NULL; /* location determined later */
lr_create_t *lr = (lr_create_t *)lracl;
znode_t *dzp;
struct inode *ip = NULL;
xvattr_t xva;
int vflg = 0;
vsecattr_t vsec = { 0 };
lr_attr_t *lrattr;
void *aclstart;
void *fuidstart;
size_t xvatlen = 0;
uint64_t txtype;
uint64_t objid;
uint64_t dnodesize;
int error;
txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
if (byteswap) {
byteswap_uint64_array(lracl, sizeof (*lracl));
if (txtype == TX_CREATE_ACL_ATTR ||
txtype == TX_MKDIR_ACL_ATTR) {
lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
zfs_replay_swap_attrs(lrattr);
xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
}
aclstart = (caddr_t)(lracl + 1) + xvatlen;
zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
/* swap fuids */
if (lracl->lr_fuidcnt) {
byteswap_uint64_array((caddr_t)aclstart +
ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
lracl->lr_fuidcnt * sizeof (uint64_t));
}
}
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
objid = LR_FOID_GET_OBJ(lr->lr_foid);
dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
xva_init(&xva);
zfs_init_vattr(&xva.xva_vattr, ATTR_MODE | ATTR_UID | ATTR_GID,
lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
/*
* All forms of zfs create (create, mkdir, mkxattrdir, symlink)
* eventually end up in zfs_mknode(), which assigns the object's
* creation time, generation number, and dnode size. The generic
* zfs_create() has no concept of these attributes, so we smuggle
* the values inside the vattr's otherwise unused va_ctime,
* va_nblocks, and va_fsid fields.
*/
ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
xva.xva_vattr.va_nblocks = lr->lr_gen;
xva.xva_vattr.va_fsid = dnodesize;
error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
if (error != ENOENT)
goto bail;
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
switch (txtype) {
case TX_CREATE_ACL:
aclstart = (caddr_t)(lracl + 1);
fuidstart = (caddr_t)aclstart +
ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
(void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
lr->lr_uid, lr->lr_gid);
/*FALLTHROUGH*/
case TX_CREATE_ACL_ATTR:
if (name == NULL) {
lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
xva.xva_vattr.va_mask |= ATTR_XVATTR;
zfs_replay_xvattr(lrattr, &xva);
}
vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
vsec.vsa_aclcnt = lracl->lr_aclcnt;
vsec.vsa_aclentsz = lracl->lr_acl_bytes;
vsec.vsa_aclflags = lracl->lr_acl_flags;
if (zfsvfs->z_fuid_replay == NULL) {
fuidstart = (caddr_t)(lracl + 1) + xvatlen +
ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
zfsvfs->z_fuid_replay =
zfs_replay_fuids(fuidstart,
(void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
lr->lr_uid, lr->lr_gid);
}
error = zfs_create(ZTOI(dzp), name, &xva.xva_vattr,
0, 0, &ip, kcred, vflg, &vsec);
break;
case TX_MKDIR_ACL:
aclstart = (caddr_t)(lracl + 1);
fuidstart = (caddr_t)aclstart +
ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
(void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
lr->lr_uid, lr->lr_gid);
/*FALLTHROUGH*/
case TX_MKDIR_ACL_ATTR:
if (name == NULL) {
lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
zfs_replay_xvattr(lrattr, &xva);
}
vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
vsec.vsa_aclcnt = lracl->lr_aclcnt;
vsec.vsa_aclentsz = lracl->lr_acl_bytes;
vsec.vsa_aclflags = lracl->lr_acl_flags;
if (zfsvfs->z_fuid_replay == NULL) {
fuidstart = (caddr_t)(lracl + 1) + xvatlen +
ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
zfsvfs->z_fuid_replay =
zfs_replay_fuids(fuidstart,
(void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
lr->lr_uid, lr->lr_gid);
}
error = zfs_mkdir(ZTOI(dzp), name, &xva.xva_vattr,
&ip, kcred, vflg, &vsec);
break;
default:
error = SET_ERROR(ENOTSUP);
}
bail:
if (error == 0 && ip != NULL)
iput(ip);
iput(ZTOI(dzp));
if (zfsvfs->z_fuid_replay)
zfs_fuid_info_free(zfsvfs->z_fuid_replay);
zfsvfs->z_fuid_replay = NULL;
return (error);
}
static int
zpl_xattr_set_dir(struct inode *ip, const char *name, const void *value,
size_t size, int flags, cred_t *cr)
{
struct inode *dxip = NULL;
struct inode *xip = NULL;
vattr_t *vap = NULL;
ssize_t wrote;
int error;
const int xattr_mode = S_IFREG | 0644;
/* Lookup the xattr directory and create it if required. */
error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR | CREATE_XATTR_DIR,
cr, NULL, NULL);
if (error)
goto out;
/* Lookup a specific xattr name in the directory */
error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL);
if (error && (error != -ENOENT))
goto out;
error = 0;
/* Remove a specific name xattr when value is set to NULL. */
if (value == NULL) {
if (xip)
error = -zfs_remove(dxip, (char *)name, cr);
goto out;
}
/* Lookup failed create a new xattr. */
if (xip == NULL) {
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = xattr_mode;
vap->va_mask = ATTR_MODE;
vap->va_uid = crgetfsuid(cr);
vap->va_gid = crgetfsgid(cr);
error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip,
cr, 0, NULL);
if (error)
goto out;
}
ASSERT(xip != NULL);
error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE);
if (error)
goto out;
wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr);
if (wrote < 0)
error = wrote;
out:
if (vap)
kmem_free(vap, sizeof(vattr_t));
if (xip)
VN_RELE(xip);
if (dxip)
VN_RELE(dxip);
if (error == -ENOENT)
error = -ENODATA;
ASSERT3S(error, <=, 0);
return (error);
}
/*
Create a home directory and populate with files from skeleton
directory.
*/
int
create_home(char *homedir, char *skeldir, uid_t uid, gid_t gid, int newfs)
/* home directory to create */
/* skel directory to copy if indicated */
/* uid of new user */
/* group id of new user */
/* allow filesystem creation */
{
struct stat stbuf;
char *dname, *bname;
char *dataset;
if (g_zfs == NULL)
g_zfs = libzfs_init();
(void) strcpy(dhome, homedir);
(void) strcpy(bhome, homedir);
dname = dirname(dhome);
bname = basename(bhome);
(void) strcpy(pdir, dname);
if ((stat(pdir, &stbuf) != 0) || !S_ISDIR(stbuf.st_mode)) {
errmsg(M_OOPS, "access the parent directory", strerror(errno));
return (EX_HOMEDIR);
}
if (strcmp(stbuf.st_fstype, MNTTYPE_AUTOFS) == 0) {
(void) strcpy(pdir, EXPORTDIR);
(void) strlcat(pdir, dname, PATH_MAX + 1);
(void) snprintf(homedir, PATH_MAX + 1, "%s/%s", pdir, bname);
if (stat(pdir, &stbuf) == 0)
(void) edit_autofs_home(bname, bname, pdir);
}
if ((strcmp(stbuf.st_fstype, MNTTYPE_ZFS) == 0) &&
(g_zfs != NULL) && newfs &&
((dataset = get_mnt_special(pdir, stbuf.st_fstype)) != NULL)) {
char nm[ZFS_MAXNAMELEN];
zfs_handle_t *zhp;
(void) snprintf(nm, ZFS_MAXNAMELEN, "%s/%s", dataset, bname);
if ((zfs_create(g_zfs, nm, ZFS_TYPE_FILESYSTEM, NULL) != 0) ||
((zhp = zfs_open(g_zfs, nm, ZFS_TYPE_FILESYSTEM)) ==
NULL)) {
errmsg(M_OOPS, "create the home directory",
libzfs_error_description(g_zfs));
return (EX_HOMEDIR);
}
if (zfs_mount(zhp, NULL, 0) != 0) {
errmsg(M_OOPS, "mount the home directory",
libzfs_error_description(g_zfs));
(void) zfs_destroy(zhp, B_FALSE);
return (EX_HOMEDIR);
}
zfs_close(zhp);
if (chmod(homedir, S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) {
errmsg(M_OOPS, "change permissions of home directory",
strerror(errno));
return (EX_HOMEDIR);
}
} else {
if (mkdir(homedir, S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) {
errmsg(M_OOPS, "create the home directory",
strerror(errno));
return (EX_HOMEDIR);
}
}
if( chown(homedir, uid, gid) != 0 ) {
errmsg(M_OOPS, "change ownership of home directory",
strerror(errno));
return( EX_HOMEDIR );
}
if(skeldir) {
/* copy the skel_dir into the home directory */
(void) sprintf( cmdbuf, "cd %s && find . -print | cpio -pd %s",
skeldir, homedir);
if( system( cmdbuf ) != 0 ) {
errmsg(M_OOPS, "copy skeleton directory into home "
"directory", strerror(errno));
(void) rm_homedir( homedir );
return( EX_HOMEDIR );
}
/* make sure contents in the home dirctory have correct owner */
(void) sprintf( cmdbuf,"cd %s && find . -exec chown %ld {} \\;",
homedir, uid );
if( system( cmdbuf ) != 0) {
errmsg(M_OOPS, "change owner of files home directory",
strerror(errno));
(void) rm_homedir( homedir );
return( EX_HOMEDIR );
}
/* and group....... */
(void) sprintf( cmdbuf, "cd %s && find . -exec chgrp %ld {} \\;",
homedir, gid );
if( system( cmdbuf ) != 0) {
errmsg(M_OOPS, "change group of files home directory",
strerror(errno));
(void) rm_homedir( homedir );
return( EX_HOMEDIR );
}
}
return( EX_SUCCESS );
}
/*
* Create a home directory and populate with files from skeleton
* directory.
*/
int
create_home(char *homedir, char *skeldir, uid_t uid, gid_t gid, int flags)
/* home directory to create */
/* skel directory to copy if indicated */
/* uid of new user */
/* group id of new user */
/* miscellaneous flags */
{
struct stat stbuf;
char *dataset;
char *dname, *bname, *rp;
int created_fs = 0;
rp = realpath(homedir, NULL);
if (rp && (strcmp(rp, "/") == 0)) {
return (EX_HOMEDIR);
}
(void) strcpy(dhome, homedir);
(void) strcpy(bhome, homedir);
dname = dirname(dhome);
bname = basename(bhome);
(void) strcpy(pdir, dname);
if ((stat(pdir, &stbuf) != 0) || !S_ISDIR(stbuf.st_mode)) {
errmsg(M_OOPS, "access the parent directory", strerror(errno));
return (EX_HOMEDIR);
}
if ((strcmp(stbuf.st_fstype, MNTTYPE_ZFS) == 0) &&
(flags & MANAGE_ZFS)) {
if (g_zfs == NULL)
g_zfs = libzfs_init();
if (g_zfs == NULL) {
errmsg(M_OOPS, "libzfs_init failure", strerror(errno));
return (EX_HOMEDIR);
}
if ((dataset = get_mnt_special(pdir, stbuf.st_fstype))
!= NULL) {
char nm[ZFS_MAX_DATASET_NAME_LEN];
zfs_handle_t *zhp;
(void) snprintf(nm, sizeof (nm), "%s/%s",
dataset, bname);
if ((zfs_create(g_zfs, nm, ZFS_TYPE_FILESYSTEM, NULL)
!= 0) ||
((zhp = zfs_open(g_zfs, nm, ZFS_TYPE_FILESYSTEM)) ==
NULL)) {
errmsg(M_OOPS, "create the home directory",
libzfs_error_description(g_zfs));
libzfs_fini(g_zfs);
g_zfs = NULL;
return (EX_HOMEDIR);
}
if (zfs_mount(zhp, NULL, 0) != 0) {
errmsg(M_OOPS, "mount the home directory",
libzfs_error_description(g_zfs));
(void) zfs_destroy(zhp, B_FALSE);
zfs_close(zhp);
libzfs_fini(g_zfs);
g_zfs = NULL;
return (EX_HOMEDIR);
}
zfs_close(zhp);
if (chmod(homedir,
S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) != 0) {
errmsg(M_OOPS,
"change permissions of home directory",
strerror(errno));
libzfs_fini(g_zfs);
g_zfs = NULL;
return (EX_HOMEDIR);
}
created_fs = 1;
} else {
errmsg(M_NO_ZFS_MOUNTPOINT, pdir);
}
}
if (!created_fs) {
if (mkdir(homedir, S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
!= 0) {
errmsg(M_OOPS, "create the home directory",
strerror(errno));
if (g_zfs != NULL) {
libzfs_fini(g_zfs);
g_zfs = NULL;
}
return (EX_HOMEDIR);
}
}
if (chown(homedir, uid, gid) != 0) {
errmsg(M_OOPS, "change ownership of home directory",
strerror(errno));
if (g_zfs != NULL) {
libzfs_fini(g_zfs);
g_zfs = NULL;
}
return (EX_HOMEDIR);
}
if (skeldir != NULL) {
/* copy the skel_dir into the home directory */
(void) sprintf(cmdbuf, "cd %s && find . -print | cpio -pd %s",
skeldir, homedir);
if (system(cmdbuf) != 0) {
errmsg(M_OOPS, "copy skeleton directory into home "
"directory", strerror(errno));
(void) rm_homedir(homedir, flags);
if (g_zfs != NULL) {
libzfs_fini(g_zfs);
g_zfs = NULL;
}
return (EX_HOMEDIR);
}
/* make sure contents in the home dirctory have correct owner */
(void) sprintf(cmdbuf,
"cd %s && find . -exec chown %ld:%ld {} \\;",
homedir, uid, gid);
if (system(cmdbuf) != 0) {
errmsg(M_OOPS,
"change owner and group of files home directory",
strerror(errno));
(void) rm_homedir(homedir, flags);
if (g_zfs != NULL) {
libzfs_fini(g_zfs);
g_zfs = NULL;
}
return (EX_HOMEDIR);
}
}
if (g_zfs != NULL) {
libzfs_fini(g_zfs);
g_zfs = NULL;
}
return (EX_SUCCESS);
}
static int
lzfs_xattr_security_set(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags, int type)
#endif
{
vnode_t *vp;
vnode_t *dvp;
vnode_t *xvp;
vattr_t *vap;
int err = 0;
const struct cred *cred = get_current_cred();
struct iovec iov = {
.iov_base = (void *) value,
.iov_len = size,
};
char *xattr_name = NULL;
uio_t uio = {
.uio_iov = &iov,
.uio_resid = size,
.uio_iovcnt = 1,
.uio_loffset = (offset_t)0,
.uio_limit = MAXOFFSET_T,
.uio_segflg = UIO_SYSSPACE,
};
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
dvp = LZFS_ITOV(inode);
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)
dvp = LZFS_ITOV(dentry->d_inode);
#endif
err = zfs_lookup(dvp, NULL, &vp, NULL, LOOKUP_XATTR | CREATE_XATTR_DIR,
NULL, (struct cred *) cred, NULL, NULL, NULL);
if(err) {
return -err;
}
if(!value) {
err =zfs_remove(vp, (char *) name,
(struct cred *)cred, NULL, 0);
return -err;
}
vap = kmalloc(sizeof(vattr_t), GFP_KERNEL);
ASSERT(vap != NULL);
memset(vap, 0, sizeof(vap));
vap->va_type = VREG;
vap->va_mode = 0644;
vap->va_mask = AT_TYPE|AT_MODE;
vap->va_uid = current_fsuid();
vap->va_gid = current_fsgid();
xattr_name = kzalloc(strlen(name) + 10, GFP_KERNEL);
xattr_name = strncpy(xattr_name, "security.", 9);
xattr_name = strncat(xattr_name, name, strlen(name));
err = zfs_create(vp, xattr_name, vap, 0, 0644,
&xvp, (struct cred *)cred, 0, NULL, NULL);
kfree(vap);
kfree(xattr_name);
if(err) {
return -err;
}
err = zfs_write(xvp, &uio, 0, (cred_t *)cred, NULL);
put_cred(cred);
if(err) {
return -err;
}
return -err;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
static size_t
lzfs_xattr_security_list(struct inode *inode, char *list, size_t list_size,
const char *name, size_t name_len)
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)
static size_t
lzfs_xattr_security_list(struct dentry *dentry, char *list, size_t list_size,
const char *name, size_t name_len, int type)
#endif
{
const size_t total_len = name_len + 1;
if (list && total_len <= list_size) {
memcpy(list, name, name_len);
list[name_len] = '\0';
}
return total_len;
}
int
lzfs_init_security(struct dentry *dentry, struct inode *dir)
{
int err;
size_t len;
void *value;
char *name;
err = security_inode_init_security(dentry->d_inode, dir, &name, &value, &len);
if (err) {
if (err == -EOPNOTSUPP)
return 0;
return err;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
err = lzfs_xattr_security_set(dentry->d_inode, name, value, len, 0);
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)
err = lzfs_xattr_security_set(dentry, name, value, len, 0, 0);
#endif
kfree(name);
kfree(value);
return err;
}
struct xattr_handler lzfs_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = lzfs_xattr_security_list,
.get = lzfs_xattr_security_get,
.set = lzfs_xattr_security_set,
};
