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* shared.h (class pinfo): New members root' and rootlen'.

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* syscalls.cc (chroot): Set new root for process.
        * path.cc (getcwd_inner): Add parameter to force use of
        new root from chroot() call.
        (ischrootpath): New macro.
        (normalize_posix_path): Care for changed root dir.
        (normalize_win32_path): Ditto.
        (getcwd_inner): Ditto.
        (chdir): Eliminate trailing path component consisting
        entirely of dots.
        * fork.cc (fork): Copy pinfo members regarding chroot().
        * spawn.cc (_spawnve): Ditto.
        * dir.cc (opendir): Don't use computed win32 path if
        chroot() took place.
This commit is contained in:
Corinna Vinschen
2000-07-19 20:14:24 +00:00
parent 7a2fc2a415
commit a67f4165ae
7 changed files with 148 additions and 16 deletions
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36
winsup/cygwin/syscalls.cc
View File

@@ -1917,12 +1917,42 @@ setegid (gid_t gid)
}
/* chroot: privileged Unix system call. */
/* FIXME: Not privileged here. How should this be done? */
extern "C"
int
chroot (const char *)
chroot (const char *newroot)
{
set_errno (ENOSYS);
return -1;
int ret = -1;
path_conv path(newroot, PC_SYM_FOLLOW | PC_FULL);
if (path.error)
goto done;
if (path.file_attributes () == (DWORD)-1)
{
set_errno (ENOENT);
goto done;
}
if (!(path.file_attributes () & FILE_ATTRIBUTE_DIRECTORY))
{
set_errno (ENOTDIR);
goto done;
}
ret = cygwin_shared->mount.conv_to_posix_path (path.get_win32 (),
myself->root, 0);
if (ret)
{
set_errno (ret);
goto done;
}
myself->rootlen = strlen (myself->root);
if (myself->root[myself->rootlen - 1] == '/')
myself->root[--myself->rootlen] = '\0';
ret = 0;
done:
syscall_printf ("%d = chroot (%s)", ret ? get_errno () : 0,
newroot ? newroot : "NULL");
return ret;
}
extern "C"