* 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.
This commit is contained in:
Corinna Vinschen
@ -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 RTSIG_MAX _POSIX_RTSIG_MAX
|
||||
#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
|
||||
|
||||
/* Used for nice and get/setpriority. */
|
||||
|
||||
/* Other Invariant Values */
|
||||
|
||||
/* Default process priority. */
|
||||
#undef NZERO
|
||||
#define NZERO 20
|
||||
|
||||
#endif /* _MACH_MACHLIMITS_H_ */
|
||||
|
||||
Reference in New Issue
Block a user