* path.h (pathconv_arg): Define PC_NO_ACCESS_CHECK.
(path_types): Define PATH_NO_ACCESS_CHECK == PC_NO_ACCESS_CHECK. * path.cc (symlink_info::check_sysfile): Move to symlink_info class and eliminate arguments that are part of class. Use set_error. (symlink_info::check_shortcut): Ditto. (symlink_info::set_error): New function. (path_conv::check): Pass PC_NO_ACCESS_CHECK to symlink_info::check. (symlink_info::check): Preserve PC_NO_ACCESS_CHECK in pflags. Use set_error.
This commit is contained in:
Christopher Faylor
parent
640c3ce5df
commit
ac7bc2d470
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@ -1,3 +1,15 @@
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2005-03-11 Christopher Faylor <cgf@timesys.com>
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* path.h (pathconv_arg): Define PC_NO_ACCESS_CHECK.
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(path_types): Define PATH_NO_ACCESS_CHECK == PC_NO_ACCESS_CHECK.
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* path.cc (symlink_info::check_sysfile): Move to symlink_info class and
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eliminate arguments that are part of class. Use set_error.
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(symlink_info::check_shortcut): Ditto.
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(symlink_info::set_error): New function.
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(path_conv::check): Pass PC_NO_ACCESS_CHECK to symlink_info::check.
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(symlink_info::check): Preserve PC_NO_ACCESS_CHECK in pflags. Use
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set_error.
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2005-03-10 Corinna Vinschen <corinna@vinschen.de>
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* path.cc (is_floppy): New function.
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@ -99,6 +99,9 @@ struct symlink_info
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int set (char *path);
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bool parse_device (const char *);
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bool case_check (char *path);
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int check_sysfile (const char *path, HANDLE h);
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int check_shortcut (const char *path, HANDLE h);
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void set_error (int);
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};
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int pcheck_case = PCHECK_RELAXED; /* Determines the case check behaviour. */
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@ -544,6 +547,7 @@ path_conv::check (const char *src, unsigned opt,
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error = 0;
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else if ((error = check_null_empty_str (src)))
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return;
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unsigned pflags_or = (opt & PC_NO_ACCESS_CHECK);
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/* This loop handles symlink expansion. */
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for (;;)
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{
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@ -603,6 +607,8 @@ path_conv::check (const char *src, unsigned opt,
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if (error)
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return;
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sym.pflags |= pflags_or;
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if (dev.major == DEV_CYGDRIVE_MAJOR)
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{
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if (!component)
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@ -767,7 +773,7 @@ is_virtual_symlink:
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else
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break;
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}
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else if (sym.error != ENOENT && sym.error != ENOSHARE) /* E. g. EACCES */
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else if (sym.error != ENOENT && sym.error != ENOSHARE)
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{
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error = sym.error;
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goto out;
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@ -2776,9 +2782,8 @@ cmp_shortcut_header (win_shortcut_hdr *file_header)
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&& file_header->run == SW_NORMAL;
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}
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static int
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check_shortcut (const char *path, DWORD fileattr, HANDLE h,
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char *contents, int *error, unsigned *pflags)
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int
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symlink_info::check_shortcut (const char *path, HANDLE h)
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{
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win_shortcut_hdr *file_header;
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char *buf, *cp;
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@ -2795,7 +2800,7 @@ check_shortcut (const char *path, DWORD fileattr, HANDLE h,
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buf = (char *) alloca (size);
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if (!ReadFile (h, buf, size, &got, 0))
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{
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*error = EIO;
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set_error (EIO);
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goto close_it;
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}
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file_header = (win_shortcut_hdr *) buf;
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@ -2810,13 +2815,13 @@ check_shortcut (const char *path, DWORD fileattr, HANDLE h,
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contents[len] = '\0';
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res = len;
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if (res) /* It's a symlink. */
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*pflags = PATH_SYMLINK | PATH_LNK;
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pflags = PATH_SYMLINK | PATH_LNK;
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goto close_it;
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file_not_symlink:
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/* Not a symlink, see if executable. */
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if (!(*pflags & PATH_ALL_EXEC) && has_exec_chars ((const char *) &file_header, got))
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*pflags |= PATH_EXEC;
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if (!(pflags & PATH_ALL_EXEC) && has_exec_chars ((const char *) &file_header, got))
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pflags |= PATH_EXEC;
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close_it:
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CloseHandle (h);
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@ -2824,9 +2829,8 @@ close_it:
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}
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static int
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check_sysfile (const char *path, DWORD fileattr, HANDLE h,
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char *contents, int *error, unsigned *pflags)
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int
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symlink_info::check_sysfile (const char *path, HANDLE h)
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{
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char cookie_buf[sizeof (SYMLINK_COOKIE) - 1];
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DWORD got;
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@ -2835,19 +2839,19 @@ check_sysfile (const char *path, DWORD fileattr, HANDLE h,
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if (!ReadFile (h, cookie_buf, sizeof (cookie_buf), &got, 0))
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{
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debug_printf ("ReadFile1 failed");
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*error = EIO;
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set_error (EIO);
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}
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else if (got == sizeof (cookie_buf)
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&& memcmp (cookie_buf, SYMLINK_COOKIE, sizeof (cookie_buf)) == 0)
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{
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/* It's a symlink. */
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*pflags = PATH_SYMLINK;
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pflags = PATH_SYMLINK;
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res = ReadFile (h, contents, CYG_MAX_PATH + 1, &got, 0);
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if (!res)
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{
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debug_printf ("ReadFile2 failed");
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*error = EIO;
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set_error (EIO);
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}
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else
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{
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@ -2866,19 +2870,19 @@ check_sysfile (const char *path, DWORD fileattr, HANDLE h,
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}
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else if (got == sizeof (cookie_buf)
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&& memcmp (cookie_buf, SOCKET_COOKIE, sizeof (cookie_buf)) == 0)
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*pflags |= PATH_SOCKET;
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pflags |= PATH_SOCKET;
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else
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{
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/* Not a symlink, see if executable. */
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if (*pflags & PATH_ALL_EXEC)
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if (pflags & PATH_ALL_EXEC)
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/* Nothing to do */;
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else if (has_exec_chars (cookie_buf, got))
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*pflags |= PATH_EXEC;
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pflags |= PATH_EXEC;
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else
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*pflags |= PATH_NOTEXEC;
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pflags |= PATH_NOTEXEC;
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}
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syscall_printf ("%d = symlink.check_sysfile (%s, %s) (%p)",
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res, path, contents, *pflags);
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res, path, contents, pflags);
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CloseHandle (h);
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return res;
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@ -3001,6 +3005,14 @@ suffix_scan::next ()
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}
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}
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void
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symlink_info::set_error (int in_errno)
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{
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if ((pflags & PATH_NO_ACCESS_CHECK) && in_errno != ENAMETOOLONG)
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return;
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error = in_errno;
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}
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bool
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symlink_info::parse_device (const char *contents)
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{
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@ -3075,6 +3087,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt)
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minor = 0;
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pflags &= ~(PATH_SYMLINK | PATH_LNK);
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unsigned pflags_or = pflags & PATH_NO_ACCESS_CHECK;
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case_clash = false;
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@ -3088,7 +3101,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt)
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matter, so we just return 0. For example, getting the
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attributes of \\HOST will typically fail. */
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debug_printf ("GetFileAttributes (%s) failed", suffix.path);
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error = geterrno_from_win_error (GetLastError (), EACCES);
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set_error (geterrno_from_win_error (GetLastError (), EACCES));
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continue;
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}
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@ -3122,7 +3135,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt)
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if (sym_check > 0 && opt & PC_CHECK_EA &&
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(res = get_symlink_ea (suffix.path, contents, sizeof (contents))) > 0)
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{
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pflags = PATH_SYMLINK;
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pflags = PATH_SYMLINK | pflags_or;
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if (sym_check == 1)
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pflags |= PATH_LNK;
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debug_printf ("Got symlink from EA: %s", contents);
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@ -3142,7 +3155,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt)
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switch (sym_check)
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{
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case 1:
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res = check_shortcut (suffix.path, fileattr, h, contents, &error, &pflags);
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res = check_shortcut (suffix.path, h);
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if (!res)
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/* check more below */;
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else if (contents[0] == ':' && contents[1] == '\\' && parse_device (contents))
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@ -3157,7 +3170,7 @@ symlink_info::check (char *path, const suffix_info *suffixes, unsigned opt)
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fileattr = INVALID_FILE_ATTRIBUTES;
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continue; /* in case we're going to tack *another* .lnk on this filename. */
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case 2:
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res = check_sysfile (suffix.path, fileattr, h, contents, &error, &pflags);
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res = check_sysfile (suffix.path, h);
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if (!res)
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goto file_not_symlink;
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break;
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@ -3453,7 +3466,7 @@ fchdir (int fd)
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extern "C" int
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cygwin_conv_to_win32_path (const char *path, char *win32_path)
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{
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path_conv p (path, PC_SYM_FOLLOW);
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path_conv p (path, PC_SYM_FOLLOW | PC_NO_ACCESS_CHECK);
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if (p.error)
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{
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win32_path[0] = '\0';
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@ -3468,7 +3481,7 @@ cygwin_conv_to_win32_path (const char *path, char *win32_path)
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extern "C" int
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cygwin_conv_to_full_win32_path (const char *path, char *win32_path)
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{
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path_conv p (path, PC_SYM_FOLLOW | PC_FULL);
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path_conv p (path, PC_SYM_FOLLOW | PC_FULL | PC_NO_ACCESS_CHECK);
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if (p.error)
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{
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win32_path[0] = '\0';
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@ -38,7 +38,8 @@ enum pathconv_arg
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PC_FULL = 0x0010,
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PC_NULLEMPTY = 0x0020,
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PC_CHECK_EA = 0x0040,
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PC_POSIX = 0x0080
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PC_POSIX = 0x0080,
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PC_NO_ACCESS_CHECK = 0x00800000
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};
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enum case_checking
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@ -54,18 +55,19 @@ enum case_checking
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enum path_types
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{
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PATH_NOTHING = 0,
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PATH_SYMLINK = MOUNT_SYMLINK,
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PATH_BINARY = MOUNT_BINARY,
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PATH_EXEC = MOUNT_EXEC,
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PATH_NOTEXEC = MOUNT_NOTEXEC,
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PATH_CYGWIN_EXEC = MOUNT_CYGWIN_EXEC,
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PATH_ENC = MOUNT_ENC,
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PATH_ALL_EXEC = (PATH_CYGWIN_EXEC | PATH_EXEC),
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PATH_LNK = 0x01000000,
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PATH_TEXT = 0x02000000,
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PATH_HAS_SYMLINKS = 0x10000000,
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PATH_SOCKET = 0x40000000
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PATH_NOTHING = 0,
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PATH_SYMLINK = MOUNT_SYMLINK,
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PATH_BINARY = MOUNT_BINARY,
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PATH_EXEC = MOUNT_EXEC,
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PATH_NOTEXEC = MOUNT_NOTEXEC,
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PATH_CYGWIN_EXEC = MOUNT_CYGWIN_EXEC,
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PATH_ENC = MOUNT_ENC,
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PATH_ALL_EXEC = (PATH_CYGWIN_EXEC | PATH_EXEC),
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PATH_NO_ACCESS_CHECK = PC_NO_ACCESS_CHECK,
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PATH_LNK = 0x01000000,
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PATH_TEXT = 0x02000000,
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PATH_HAS_SYMLINKS = 0x10000000,
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PATH_SOCKET = 0x40000000
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};
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class symlink_info;
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