diff options
Diffstat (limited to 'sys/i386/ibcs2/ibcs2_util.c')
| -rw-r--r-- | sys/i386/ibcs2/ibcs2_util.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/sys/i386/ibcs2/ibcs2_util.c b/sys/i386/ibcs2/ibcs2_util.c deleted file mode 100644 index 69937acda2941..0000000000000 --- a/sys/i386/ibcs2/ibcs2_util.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright (c) 1994 Christos Zoulas - * Copyright (c) 1995 Frank van der Linden - * Copyright (c) 1995 Scott Bartram - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * from: svr4_util.c,v 1.5 1995/01/22 23:44:50 christos Exp - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/namei.h> -#include <sys/proc.h> -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/filedesc.h> -#include <sys/ioctl.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/vnode.h> - -#include <compat/ibcs2/ibcs2_util.h> - -const char ibcs2_emul_path[] = "/emul/ibcs2"; - -/* - * Search an alternate path before passing pathname arguments on - * to system calls. Useful for keeping a seperate 'emulation tree'. - * - * If cflag is set, we check if an attempt can be made to create - * the named file, i.e. we check if the directory it should - * be in exists. - */ -int -ibcs2_emul_find(p, sgp, prefix, path, pbuf, cflag) - struct proc *p; - caddr_t *sgp; /* Pointer to stackgap memory */ - const char *prefix; - char *path; - char **pbuf; - int cflag; -{ - struct nameidata nd; - struct nameidata ndroot; - struct vattr vat; - struct vattr vatroot; - int error; - char *ptr, *buf, *cp; - size_t sz, len; - - buf = (char *) malloc(MAXPATHLEN, M_TEMP, M_WAITOK); - *pbuf = path; - - for (ptr = buf; (*ptr = *prefix) != '\0'; ptr++, prefix++) - continue; - - sz = MAXPATHLEN - (ptr - buf); - - /* - * If sgp is not given then the path is already in kernel space - */ - if (sgp == NULL) - error = copystr(path, ptr, sz, &len); - else - error = copyinstr(path, ptr, sz, &len); - - if (error) { - free(buf, M_TEMP); - return error; - } - - if (*ptr != '/') { - free(buf, M_TEMP); - return EINVAL; - } - - /* - * We know that there is a / somewhere in this pathname. - * Search backwards for it, to find the file's parent dir - * to see if it exists in the alternate tree. If it does, - * and we want to create a file (cflag is set). We don't - * need to worry about the root comparison in this case. - */ - - if (cflag) { - for (cp = &ptr[len] - 1; *cp != '/'; cp--); - *cp = '\0'; - - NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, p); - - if ((error = namei(&nd)) != 0) { - free(buf, M_TEMP); - return error; - } - - *cp = '/'; - } - else { - NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, buf, p); - - if ((error = namei(&nd)) != 0) { - free(buf, M_TEMP); - return error; - } - - /* - * We now compare the vnode of the ibcs2_root to the one - * vnode asked. If they resolve to be the same, then we - * ignore the match so that the real root gets used. - * This avoids the problem of traversing "../.." to find the - * root directory and never finding it, because "/" resolves - * to the emulation root directory. This is expensive :-( - */ - /* XXX: prototype should have const here for NDINIT */ - NDINIT(&ndroot, LOOKUP, FOLLOW, UIO_SYSSPACE, - (char *) ibcs2_emul_path, p); - - if ((error = namei(&ndroot)) != 0) { - /* Cannot happen! */ - free(buf, M_TEMP); - vrele(nd.ni_vp); - return error; - } - - if ((error = VOP_GETATTR(nd.ni_vp, &vat, p->p_ucred, p)) != 0) { - goto done; - } - - if ((error = VOP_GETATTR(ndroot.ni_vp, &vatroot, p->p_ucred, p)) - != 0) { - goto done; - } - - if (vat.va_fsid == vatroot.va_fsid && - vat.va_fileid == vatroot.va_fileid) { - error = ENOENT; - goto done; - } - - } - if (sgp == NULL) - *pbuf = buf; - else { - sz = &ptr[len] - buf; - *pbuf = stackgap_alloc(sgp, sz + 1); - error = copyout(buf, *pbuf, sz); - free(buf, M_TEMP); - } - - -done: - vrele(nd.ni_vp); - if (!cflag) - vrele(ndroot.ni_vp); - return error; -} |