From 86bc8fadff6523470b68b9838fe7af2e55f3b5a3 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Tue, 7 Nov 2006 17:59:54 +0000 Subject: * 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. --- winsup/cygwin/include/limits.h | 176 ++++++++++++++++++++++++++++++++++------- 1 file changed, 149 insertions(+), 27 deletions(-) (limited to 'winsup/cygwin/include/limits.h') 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 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 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_ */ -- cgit v1.2.3