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2c731798 | 1 | '\" t |
c11b1abf | 2 | .\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com> |
2c731798 | 3 | .\" |
93015253 | 4 | .\" %%%LICENSE_START(VERBATIM) |
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5 | .\" Permission is granted to make and distribute verbatim copies of this |
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9 | .\" Permission is granted to copy and distribute modified versions of this | |
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12 | .\" permission notice identical to this one. | |
c13182ef | 13 | .\" |
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14 | .\" Since the Linux kernel and libraries are constantly changing, this |
15 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
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c13182ef | 21 | .\" |
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23 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 24 | .\" %%%LICENSE_END |
2c731798 | 25 | .\" |
460495ca | 26 | .TH SEM_UNLINK 3 2015-08-08 "Linux" "Linux Programmer's Manual" |
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27 | .SH NAME |
28 | sem_unlink \- remove a named semaphore | |
29 | .SH SYNOPSIS | |
30 | .nf | |
31 | .B #include <semaphore.h> | |
68e4db0a | 32 | .PP |
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33 | .BI "int sem_unlink(const char *" name ); |
34 | .fi | |
68e4db0a | 35 | .PP |
2c5f8c8c | 36 | Link with \fI\-pthread\fP. |
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37 | .SH DESCRIPTION |
38 | .BR sem_unlink () | |
39 | removes the named semaphore referred to by | |
c030aa56 | 40 | .IR name . |
2c731798 | 41 | The semaphore name is removed immediately. |
c13182ef | 42 | The semaphore is destroyed once all other processes that have |
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43 | the semaphore open close it. |
44 | .SH RETURN VALUE | |
45 | On success | |
46 | .BR sem_unlink () | |
47 | returns 0; on error, \-1 is returned, with | |
c13182ef | 48 | .I errno |
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49 | set to indicate the error. |
50 | .SH ERRORS | |
51 | .TP | |
52 | .B EACCES | |
53 | The caller does not have permission to unlink this semaphore. | |
54 | .TP | |
55 | .B ENAMETOOLONG | |
0daa9e92 | 56 | .I name |
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57 | was too long. |
58 | .TP | |
59 | .B ENOENT | |
60 | There is no semaphore with the given | |
61 | .IR name . | |
ef0a5e73 | 62 | .SH ATTRIBUTES |
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63 | For an explanation of the terms used in this section, see |
64 | .BR attributes (7). | |
65 | .TS | |
66 | allbox; | |
67 | lb lb lb | |
68 | l l l. | |
69 | Interface Attribute Value | |
70 | T{ | |
ef0a5e73 | 71 | .BR sem_unlink () |
ee9482f4 PH |
72 | T} Thread safety MT-Safe |
73 | .TE | |
2c731798 | 74 | .SH CONFORMING TO |
14375f3f | 75 | POSIX.1-2001, POSIX.1-2008. |
47297adb | 76 | .SH SEE ALSO |
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77 | .BR sem_getvalue (3), |
78 | .BR sem_open (3), | |
79 | .BR sem_post (3), | |
80 | .BR sem_wait (3), | |
81 | .BR sem_overview (7) |