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Annotation of src/lib/libc/gen/ulimit.3, Revision 1.8.8.2

1.8.8.2 ! martin      1: .\"    $NetBSD: ulimit.3,v 1.8 2008/04/30 13:10:50 martin Exp $
        !             2: .\"
        !             3: .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
        !             4: .\" All rights reserved.
        !             5: .\"
        !             6: .\" This code is derived from software contributed to The NetBSD Foundation
        !             7: .\" by Klaus Klein.
        !             8: .\"
        !             9: .\" Redistribution and use in source and binary forms, with or without
        !            10: .\" modification, are permitted provided that the following conditions
        !            11: .\" are met:
        !            12: .\" 1. Redistributions of source code must retain the above copyright
        !            13: .\"    notice, this list of conditions and the following disclaimer.
        !            14: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            15: .\"    notice, this list of conditions and the following disclaimer in the
        !            16: .\"    documentation and/or other materials provided with the distribution.
        !            17: .\"
        !            18: .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
        !            19: .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            20: .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            21: .\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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        !            30: .Dd September 13, 1999
        !            31: .Dt ULIMIT 3
        !            32: .Os
        !            33: .Sh NAME
        !            34: .Nm ulimit
        !            35: .Nd get and set process limits
        !            36: .Sh LIBRARY
        !            37: .Lb libc
        !            38: .Sh SYNOPSIS
        !            39: .In ulimit.h
        !            40: .Ft long int
        !            41: .Fn ulimit "int cmd" ...
        !            42: .Sh DESCRIPTION
        !            43: The
        !            44: .Fn ulimit
        !            45: function provides a method to query or alter resource limits of the calling
        !            46: process.
        !            47: The method to be performed is specified by the
        !            48: .Fa cmd
        !            49: argument; possible values are:
        !            50: .Bl -tag -width UL_GETFSIZEXX
        !            51: .It Li UL_GETFSIZE
        !            52: Return the soft file size limit of the process.
        !            53: The value returned is in units of 512-byte blocks.
        !            54: If the result cannot be represented in an object of type
        !            55: .Fa long int ,
        !            56: the result is unspecified.
        !            57: .It Li UL_SETFSIZE
        !            58: Set the hard and soft file size limits of the process to the value of the
        !            59: second argument passed, which is in units of 512-byte blocks, and which is
        !            60: expected to be of type
        !            61: .Fa long int .
        !            62: The new file size limit of the process is returned.
        !            63: Any process may decrease the limit, but raising it is only permitted if
        !            64: the caller is the super-user.
        !            65: .El
        !            66: .Pp
        !            67: If successful, the
        !            68: .Fn ulimit
        !            69: function will not change the setting of
        !            70: .Va errno .
        !            71: .Pp
        !            72: The
        !            73: .Fn ulimit
        !            74: function is an obsolete interface; applications are encouraged to use
        !            75: .Xr getrlimit 2
        !            76: and
        !            77: .Xr setrlimit 2
        !            78: instead.
        !            79: .Sh RETURN VALUES
        !            80: If successful, the
        !            81: .Fn ulimit
        !            82: function returns the value of the requested limit.
        !            83: Otherwise, it returns \-1, sets
        !            84: .Va errno
        !            85: to indicate an error, and the limit is not changed.
        !            86: Therefore, to detect an error condition applications should set
        !            87: .Va errno
        !            88: to 0, call
        !            89: .Fn ulimit ,
        !            90: and check if \-1 is returned and
        !            91: .Va errno
        !            92: is non-zero.
        !            93: .Sh ERRORS
        !            94: The
        !            95: .Fn ulimit
        !            96: function will fail if:
        !            97: .Bl -tag -width Er
        !            98: .It Bq Er EINVAL
        !            99: The
        !           100: .Fa cmd
        !           101: argument is not valid.
        !           102: .It Bq Er EPERM
        !           103: It was attempted to increase a limit, and the caller is not the super-user.
        !           104: .El
        !           105: .Sh SEE ALSO
        !           106: .Xr getrlimit 2 ,
        !           107: .Xr setrlimit 2
        !           108: .Sh STANDARDS
        !           109: The
        !           110: .Fn ulimit
        !           111: function conforms to
        !           112: .St -xsh5 .

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