/*===========================================================================*
* do_utime *
*===========================================================================*/
PUBLIC int do_utime()
{
/* Perform the utime(name, timep) system call. */
register int len;
int r;
uid_t uid;
time_t actime, modtime;
struct vnode *vp;
/* Adjust for case of 'timep' being NULL;
* utime_strlen then holds the actual size: strlen(name)+1.
*/
len = m_in.utime_length;
if (len == 0) len = m_in.utime_strlen;
if (fetch_name(m_in.utime_file, len, M1) != OK) return(err_code);
/* Request lookup */
if ((r = lookup_vp(0 /*flags*/, 0 /*!use_realuid*/, &vp)) != OK) return r;
/* Fill in request fields.*/
if (m_in.utime_length == 0) {
actime = modtime = clock_time();
} else {
actime = m_in.utime_actime;
modtime = m_in.utime_modtime;
}
uid= fp->fp_effuid;
r= OK;
if (vp->v_uid != uid && uid != SU_UID) r = EPERM;
if (m_in.utime_length == 0 && r != OK)
{
/* With a null times pointer, updating the times (to the current time)
* is allow if the object is writable.
*/
r = forbidden(vp, W_BIT, 0 /*!use_realuid*/);
}
if (r != OK)
{
put_vnode(vp);
return r;
}
/* Issue request */
r= req_utime(vp->v_fs_e, vp->v_inode_nr, actime, modtime);
put_vnode(vp);
return r;
}
/*===========================================================================*
* do_utime *
*===========================================================================*/
PUBLIC int do_utime()
{
/* Perform the utime(name, timep) system call. */
register int len;
int r;
time_t actime, modtime;
struct vnode *vp;
struct vmnt *vmp;
char fullpath[PATH_MAX];
struct lookup resolve;
lookup_init(&resolve, fullpath, PATH_NOFLAGS, &vmp, &vp);
resolve.l_vmnt_lock = VMNT_WRITE;
resolve.l_vnode_lock = VNODE_READ;
/* Adjust for case of 'timep' being NULL;
* utime_strlen then holds the actual size: strlen(name)+1 */
len = m_in.utime_length;
if (len == 0) len = m_in.utime_strlen;
/* Temporarily open the file */
if (fetch_name(m_in.utime_file, len, M1, fullpath) != OK) return(err_code);
if ((vp = eat_path(&resolve, fp)) == NULL) return(err_code);
/* Only the owner of a file or the super user can change its name. */
r = OK;
if (vp->v_uid != fp->fp_effuid && fp->fp_effuid != SU_UID) r = EPERM;
if (m_in.utime_length == 0 && r != OK) r = forbidden(fp, vp, W_BIT);
if (read_only(vp) != OK) r = EROFS; /* Not even su can touch if R/O */
if (r == OK) {
/* Issue request */
if(m_in.utime_length == 0) {
actime = modtime = clock_time();
} else {
actime = m_in.utime_actime;
modtime = m_in.utime_modtime;
}
r = req_utime(vp->v_fs_e, vp->v_inode_nr, actime, modtime);
}
unlock_vnode(vp);
unlock_vmnt(vmp);
put_vnode(vp);
return(r);
}
/*===========================================================================*
* scall_utime *
*===========================================================================*/
int scall_utime(void)
{
/* Perform the utime(name, timep) system call. */
register int len;
int r;
time_t actime, modtime;
struct utimbuf ut;
struct vnode *vp;
/* Adjust for case of 'timep' being NULL. */
if (fetch_name(user_fullpath, PATH_MAX, m_in.utime_file) < 0)
return(err_code);
if ((vp = eat_path(PATH_NOFLAGS)) == NIL_VNODE) return(err_code);
/* get times buffer if not 0 */
if (m_in.utime_ptimes != 0) {
r = sys_datacopy(who_e, (vir_bytes)m_in.utime_ptimes, ENDPT_SELF, (vir_bytes)&ut, sizeof(struct utimbuf));
if (r != 0)
return r;
}
/* Only the owner of a file or the super user can change its name. */
r = 0;
if (vp->v_uid != fp->fp_effuid && fp->fp_effuid != SU_UID) r = -EPERM;
if (m_in.utime_ptimes == 0 && r != 0) r = forbidden(vp, W_BIT);
if (read_only(vp) != 0) r = -EROFS; /* Not even su can touch if R/O */
if (r == 0) {
/* Issue request */
if (m_in.utime_ptimes == 0) {
actime = modtime = clock_time();
} else {
actime = ut.actime;
modtime = ut.modtime;
}
r = req_utime(vp->v_fs_e, vp->v_inode_nr, actime, modtime);
}
put_vnode(vp);
return(r);
}
/*===========================================================================*
* do_utime *
*===========================================================================*/
PUBLIC int do_utime()
{
/* Perform the utime(name, timep) system call. */
register int len;
int r;
uid_t uid;
time_t actime, modtime;
struct vnode *vp;
/* Adjust for case of 'timep' being NULL;
* utime_strlen then holds the actual size: strlen(name)+1 */
len = m_in.utime_length;
if(len == 0) len = m_in.utime_strlen;
/* Temporarily open the file */
if (fetch_name(m_in.utime_file, len, M1) != OK) return(err_code);
if ((vp = eat_path(PATH_NOFLAGS)) == NIL_VNODE) return(err_code);
/* Only the owner of a file or the super user can change its name. */
r = OK;
if (vp->v_uid != fp->fp_effuid && fp->fp_effuid != SU_UID) r = EPERM;
if (m_in.utime_length == 0 && r != OK) r = forbidden(vp, W_BIT);
if (read_only(vp) != OK) r = EROFS; /* Not even su can touch if R/O */
if (r == OK) {
/* Issue request */
if(m_in.utime_length == 0) {
actime = modtime = clock_time();
} else {
actime = m_in.utime_actime;
modtime = m_in.utime_modtime;
}
r = req_utime(vp->v_fs_e, vp->v_inode_nr, actime, modtime);
}
put_vnode(vp);
return(r);
}
