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Diffstat (limited to 'src/lib/libc/stdlib/exit.3')
| -rw-r--r-- | src/lib/libc/stdlib/exit.3 | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/lib/libc/stdlib/exit.3 b/src/lib/libc/stdlib/exit.3 new file mode 100644 index 0000000000..fa233ac75f --- /dev/null +++ b/src/lib/libc/stdlib/exit.3 | |||
| @@ -0,0 +1,114 @@ | |||
| 1 | .\" Copyright (c) 1990, 1991 The Regents of the University of California. | ||
| 2 | .\" All rights reserved. | ||
| 3 | .\" | ||
| 4 | .\" This code is derived from software contributed to Berkeley by | ||
| 5 | .\" the American National Standards Committee X3, on Information | ||
| 6 | .\" Processing Systems. | ||
| 7 | .\" | ||
| 8 | .\" Redistribution and use in source and binary forms, with or without | ||
| 9 | .\" modification, are permitted provided that the following conditions | ||
| 10 | .\" are met: | ||
| 11 | .\" 1. Redistributions of source code must retain the above copyright | ||
| 12 | .\" notice, this list of conditions and the following disclaimer. | ||
| 13 | .\" 2. Redistributions in binary form must reproduce the above copyright | ||
| 14 | .\" notice, this list of conditions and the following disclaimer in the | ||
| 15 | .\" documentation and/or other materials provided with the distribution. | ||
| 16 | .\" 3. Neither the name of the University nor the names of its contributors | ||
| 17 | .\" may be used to endorse or promote products derived from this software | ||
| 18 | .\" without specific prior written permission. | ||
| 19 | .\" | ||
| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
| 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
| 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
| 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
| 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
| 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
| 30 | .\" SUCH DAMAGE. | ||
| 31 | .\" | ||
| 32 | .\" $OpenBSD: exit.3,v 1.10 2004/05/03 17:21:13 millert Exp $ | ||
| 33 | .\" | ||
| 34 | .Dd January 21, 2004 | ||
| 35 | .Dt EXIT 3 | ||
| 36 | .Os | ||
| 37 | .Sh NAME | ||
| 38 | .Nm exit, _Exit | ||
| 39 | .Nd perform normal program termination | ||
| 40 | .Sh SYNOPSIS | ||
| 41 | .Fd #include <stdlib.h> | ||
| 42 | .Ft void | ||
| 43 | .Fn exit "int status" | ||
| 44 | .Ft void | ||
| 45 | .Fn _Exit "int status" | ||
| 46 | .Sh DESCRIPTION | ||
| 47 | The | ||
| 48 | .Fn exit | ||
| 49 | and | ||
| 50 | .Fn _Exit | ||
| 51 | functions terminate a process. | ||
| 52 | .Pp | ||
| 53 | Before termination, | ||
| 54 | .Fn exit | ||
| 55 | performs the following operations in the order listed: | ||
| 56 | .Bl -enum -offset indent | ||
| 57 | .It | ||
| 58 | Call the functions registered with the | ||
| 59 | .Xr atexit 3 | ||
| 60 | function, in the reverse order of their registration. | ||
| 61 | .It | ||
| 62 | Flush all open output streams. | ||
| 63 | .It | ||
| 64 | Close all open streams. | ||
| 65 | .It | ||
| 66 | Unlink all files created with the | ||
| 67 | .Xr tmpfile 3 | ||
| 68 | function. | ||
| 69 | .El | ||
| 70 | .Pp | ||
| 71 | The | ||
| 72 | .Fn _Exit | ||
| 73 | function terminates without calling the functions registered with the | ||
| 74 | .Xr atexit 3 | ||
| 75 | function. | ||
| 76 | The | ||
| 77 | .Ox | ||
| 78 | implementation of | ||
| 79 | .Fn _Exit | ||
| 80 | does not flush open output streams or unlink files created with the | ||
| 81 | .Xr tmpfile 3 | ||
| 82 | function. | ||
| 83 | However, this behavior is implementation-specific. | ||
| 84 | .Pp | ||
| 85 | Lastly, | ||
| 86 | .Fn exit | ||
| 87 | and | ||
| 88 | .Fn _Exit | ||
| 89 | call | ||
| 90 | .Xr _exit 2 . | ||
| 91 | Note that typically | ||
| 92 | .Xr _exit 2 | ||
| 93 | only passes the lower 8 bits of | ||
| 94 | .Fa status | ||
| 95 | on to the parent, thus negative values have less meaning. | ||
| 96 | .Sh RETURN VALUES | ||
| 97 | The | ||
| 98 | .Fn exit | ||
| 99 | and | ||
| 100 | .Fn _Exit | ||
| 101 | functions never return. | ||
| 102 | .Sh SEE ALSO | ||
| 103 | .Xr _exit 2 , | ||
| 104 | .Xr atexit 3 , | ||
| 105 | .Xr intro 3 , | ||
| 106 | .Xr sysexits 3 , | ||
| 107 | .Xr tmpfile 3 | ||
| 108 | .Sh STANDARDS | ||
| 109 | The | ||
| 110 | .Fn exit | ||
| 111 | and | ||
| 112 | .Fn _Exit | ||
| 113 | functions conform to | ||
| 114 | .St -ansiC-99 . | ||
