* fhandler.cc (check_posix_perm): Moved here from syscalls.cc.

	(fhandler_base::fpathconf): New method implementing (f)pathconf.
	* fhandler.h (class fhandler_base): Declare fpathconf method.
	* path.cc (path_conv::check): Replace MAX_LINK_DEPTH with SYMLOOP_MAX.
	* path.h (MAX_LINK_DEPTH): Delete.
	* syscalls.cc (check_posix_perm): Move to fhandler.cc.
	(fpathconf): Call fhandler's fpathconf method.
	(pathconf): Build fhandler and call fhandler's fpathconf method.
	* sysconf.cc (sysconf): Reorder switch according to order of flags
	in sys/unistd.h.  Add handling for some missing flags.
	* include/limits.h: Reorder according to SUSv3 description.  Add some
	missing definitions.  Add comments.
	* include/sys/syslimits.h: New file overriding newlib's syslimits.h
	file.

2 files changed, 169 insertions, 27 deletions

diff --git a/winsup/cygwin/include/limits.h b/winsup/cygwin/include/limits.h
index 01e6db7b7..3c4ac2b4b 100644
--- a/winsup/cygwin/include/limits.h
+++ b/winsup/cygwin/include/limits.h
@@ -1,6 +1,6 @@
 /* limits.h
 
-   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
+   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -18,6 +18,9 @@ details. */
 #define _LIMITS_H___
 #define _MACH_MACHLIMITS_H_
 
+
+/* Numerical limits */
+
 /* Number of bits in a `char'.  */
 #undef CHAR_BIT
 #define CHAR_BIT 8
@@ -117,27 +120,34 @@ details. */
 #undef ULLONG_MAX
 #define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
 
-/* Maximum number of iovcnt in a writev (an arbitrary number) */
-#undef IOV_MAX
-#define IOV_MAX 1024
-
 /* Maximum size of ssize_t */
 #undef SSIZE_MAX
 #define SSIZE_MAX (__LONG_MAX__)
 
-/* Maximum length of a path */
-#define PATH_MAX 260
 
-/* Maximum length of a path component. */
-#define NAME_MAX 255
+/* Runtime Invariant Values */
 
-/* Max num groups for a user, value taken from NT documentation */
-/* Must match <sys/param.h> NGROUPS */
-#define NGROUPS_MAX 16
+/* Maximum number of bytes in arguments and environment passed in an exec
+   call.  32000 is the safe value used for Windows processes when called
+   from Cygwin processes. */
+#undef ARG_MAX
+#define ARG_MAX 32000
 
-/* WaitForMultipleObjects can't handle waiting for more than 64 objects.
-   This limits how many children we can fork/spawn off. */
-#define CHILD_MAX 63
+/* Maximum number of simultaneous processes per real user ID. */
+#undef CHILD_MAX
+#define CHILD_MAX 256
+
+/* Maximum length of a host name. */
+#undef HOST_NAME_MAX
+#define HOST_NAME_MAX 255
+
+/* Maximum number of iovcnt in a writev (an arbitrary number) */
+#undef IOV_MAX
+#define IOV_MAX 1024
+
+/* Maximum number of characters in a login name. */
+#undef LOGIN_NAME_MAX
+#define LOGIN_NAME_MAX 256	/* equal to UNLEN defined in w32api/lmcons.h */
 
 /* # of open files per process. Actually it can be more since Cygwin
    grows the dtable as necessary. We define a reasonable limit here
@@ -146,30 +156,126 @@ details. */
 #undef OPEN_MAX
 #define OPEN_MAX 256
 
-/* # of bytes in a pipe buf. This is the max # of bytes which can be
-   written to a pipe in one atomic operation. */
-#undef PIPE_BUF
-#define PIPE_BUF 4096
+/* Size in bytes of a page. */
+#undef PAGESIZE
+#undef PAGE_SIZE
+#define PAGESIZE 65536
+#define PAGE_SIZE PAGESIZE
+
+/* Maximum number of realtime signals reserved for application use. */
+/* FIXME: We only support one realtime signal but _POSIX_RTSIG_MAX is 8. */
+#undef RTSIG_MAX
+#define RTSIG_MAX 1
+
+/* Number of streams that one process can have open at one time. */
+#undef STREAM_MAX
+#define STREAM_MAX 20
+
+/* Maximum number of nested symbolic links. */
+#undef SYMLOOP_MAX
+#define SYMLOOP_MAX 10
 
 /* Maximum number of timer expiration overruns. */
 #undef TIMER_MAX
 #define TIMER_MAX 32
 
-/* Maximum number of characters in a login name. */
-#undef LOGIN_NAME_MAX
-#define LOGIN_NAME_MAX 256	/* equal to UNLEN defined in w32api/lmcons.h */
-
 /* Maximum number of characters in a tty name. */
 #undef TTY_NAME_MAX
 #define TTY_NAME_MAX 12
 
+
+/* Pathname Variable Values */
+
+/* Minimum bits needed to represent the maximum size of a regular file. */
+#undef FILESIZEBITS
+#define FILESIZEBITS 64
+
+/* Maximum number of hardlinks to a file. */
+#undef LINK_MAX
+#define LINK_MAX 1024
+
+/* Maximum number of bytes in a terminal canonical input line. */
+#undef MAX_CANON
+#define MAX_CANON 255
+
+/* Minimum number of bytes available in a terminal input queue. */
+#undef MAX_INPUT
+#define MAX_INPUT 255
+
+/* Maximum length of a path component. */
+#undef NAME_MAX
+#define NAME_MAX 255
+
+/* Maximum length of a path */
+#undef PATH_MAX
+#define PATH_MAX 260
+
+/* # of bytes in a pipe buf. This is the max # of bytes which can be
+   written to a pipe in one atomic operation. */
+#undef PIPE_BUF
+#define PIPE_BUF 4096
+
+
+/* Runtime Increasable Values */
+
+/* Maximum obase values allowed by the bc utility. */
+#undef BC_BASE_MAX
+#define BC_BASE_MAX 99
+
+/* Maximum number of elements permitted in an array by the bc utility. */
+#undef BC_DIM_MAX
+#define BC_DIM_MAX 2048
+
+/* Maximum scale value allowed by the bc utility. */
+#undef BC_SCALE_MAX
+#define BC_SCALE_MAX 99
+
+/* Maximum length of a string constant accepted by the bc utility. */
+#undef BC_STRING_MAX
+#define BC_STRING_MAX 1000
+
+/* Maximum number of weights that can be assigned to an entry of the
+   LC_COLLATE order keyword in the locale definition file. */
+/* FIXME: We don't support this at all right now, so this value is
+   misleading at best.  It's also lower than _POSIX2_COLL_WEIGHTS_MAX
+   which is not good.  So, for now we deliberately not define it even
+   though it was defined in the former syslimits.h file. */
+#if 0
+#undef COLL_WEIGHTS_MAX
+#define COLL_WEIGHTS_MAX 0
+#endif
+
+/* Maximum number of expressions that can be nested within parentheses
+   by the expr utility. */
+#undef EXPR_NEST_MAX
+#define EXPR_NEST_MAX 32
+
+/* Maximum bytes of a text utility's input line */
+#undef LINE_MAX
+#define LINE_MAX 2048
+
+/* Max num groups for a user, value taken from NT documentation */
+/* Must match <sys/param.h> NGROUPS */
+#undef NGROUPS_MAX
+#define NGROUPS_MAX 16
+
+/* Maximum number of repeated occurrences of a regular expression when
+   using the interval notation \{m,n\} */
+#undef RE_DUP_MAX
+#define RE_DUP_MAX 255
+
+
+/* Minimum Values */
+
 /* POSIX values */
 /* These should never vary from one system type to another */
 /* They represent the minimum values that POSIX systems must support.
    POSIX-conforming apps must not require larger values. */
 #define	_POSIX_ARG_MAX		4096
 #define _POSIX_CHILD_MAX	6
+#define _POSIX_HOST_NAME_MAX	255
 #define _POSIX_LINK_MAX		8
+#define _POSIX_LOGIN_NAME_MAX	9
 #define _POSIX_MAX_CANON	255
 #define _POSIX_MAX_INPUT	255
 #define _POSIX_NAME_MAX		14
@@ -177,16 +283,32 @@ details. */
 #define _POSIX_OPEN_MAX		16
 #define _POSIX_PATH_MAX		255
 #define _POSIX_PIPE_BUF		512
+#define _POSIX_RE_DUP_MAX	255
+#define _POSIX_RTSIG_MAX	8
 #define _POSIX_SSIZE_MAX	32767
 #define _POSIX_STREAM_MAX	8
-#define _POSIX_TZNAME_MAX       3
-#define _POSIX_RTSIG_MAX	8
+#define _POSIX_SYMLINK_MAX	255
+#define _POSIX_SYMLOOP_MAX	8
 #define _POSIX_TIMER_MAX	32
 #define _POSIX_TTY_NAME_MAX	9
+#define _POSIX_TZNAME_MAX       3
+
+#define _POSIX2_BC_BASE_MAX	99
+#define _POSIX2_BC_DIM_MAX	2048
+#define _POSIX2_BC_SCALE_MAX	99
+#define _POSIX2_BC_STRING_MAX	1000
+#if 0	/* See comment about COLL_WEIGHTS_MAX above. */
+#define _POSIX2_COLL_WEIGHTS_MAX	2
+#endif
+#define _POSIX2_EXPR_NEST_MAX	32
+#define _POSIX2_LINE_MAX	2048
+#define _POSIX2_RE_DUP_MAX	255
+
 
-#define RTSIG_MAX		_POSIX_RTSIG_MAX
+/* Other Invariant Values */
 
-/* Used for nice and get/setpriority. */
+/* Default process priority. */
+#undef NZERO
 #define NZERO			20
 
 #endif /* _MACH_MACHLIMITS_H_ */
diff --git a/winsup/cygwin/include/sys/syslimits.h b/winsup/cygwin/include/sys/syslimits.h
new file mode 100644
index 000000000..b501de81e
--- /dev/null
+++ b/winsup/cygwin/include/sys/syslimits.h
@@ -0,0 +1,20 @@
+/* sys/syslimits.h
+
+   Copyright 2006 Red Hat, Inc.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _SYS_SYSLIMITS_H
+#define _SYS_SYSLIMITS_H
+
+#ifdef _COMPILING_NEWLIB
+# include <limits.h>
+#else
+# error "Do not include sys/syslimits.h from applications directly."
+#endif
+
+#endif /*_SYS_SYSLIMITS_H */