Switch from OpenSSL 0.9.7d to 0.9.7e.
[dragonfly.git] / secure / lib / libcrypto / man / CRYPTO_set_ex_data.3
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2''' $RCSfile$$Revision$$Date$
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34'''
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36''' Set up \*(-- to give an unbreakable dash;
37''' string Tr holds user defined translation string.
38''' Bell System Logo is used as a dummy character.
39'''
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42.ds -- \(*W-
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46.ds L" ""
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48''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of
49''' \*(L" and \*(R", except that they are used on ".xx" lines,
50''' such as .IP and .SH, which do another additional levels of
51''' double-quote interpretation
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64.ds -- \(em\|
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80.\" If the F register is turned on, we'll generate
81.\" index entries out stderr for the following things:
82.\" TH Title
83.\" SH Header
84.\" Sh Subsection
85.\" Ip Item
86.\" X<> Xref (embedded
87.\" Of course, you have to process the output yourself
88.\" in some meaninful fashion.
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984263bc 92..
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93.nr % 0
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96.TH CRYPTO_set_ex_data 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
97.UC
98.if n .hy 0
984263bc 99.if n .na
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120.\}
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139.\}
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172\{\
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188.\}
189.rm #[ #] #H #V #F C
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190.SH "NAME"
191CRYPTO_set_ex_data, CRYPTO_get_ex_data \- internal application specific data functions
192.SH "SYNOPSIS"
74dab6c2 193.PP
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194.Vb 1
195\& int CRYPTO_set_ex_data(CRYPTO_EX_DATA *r, int idx, void *arg);
196.Ve
197.Vb 1
198\& void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *r, int idx);
199.Ve
200.SH "DESCRIPTION"
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201Several OpenSSL structures can have application specific data attached to them.
202These functions are used internally by OpenSSL to manipulate application
203specific data attached to a specific structure.
204.PP
205These functions should only be used by applications to manipulate
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206\fBCRYPTO_EX_DATA\fR structures passed to the \fBnew_func()\fR, \fBfree_func()\fR and
207\fBdup_func()\fR callbacks: as passed to \fBRSA_get_ex_new_index()\fR for example.
984263bc 208.PP
74dab6c2 209\fBCRYPTO_set_ex_data()\fR is used to set application specific data, the data is
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210supplied in the \fBarg\fR parameter and its precise meaning is up to the
211application.
212.PP
74dab6c2 213\fBCRYPTO_get_ex_data()\fR is used to retrieve application specific data. The data
984263bc 214is returned to the application, this will be the same value as supplied to
74dab6c2 215a previous \fBCRYPTO_set_ex_data()\fR call.
984263bc 216.SH "RETURN VALUES"
74dab6c2 217\fBCRYPTO_set_ex_data()\fR returns 1 on success or 0 on failure.
984263bc 218.PP
74dab6c2 219\fBCRYPTO_get_ex_data()\fR returns the application data or 0 on failure. 0 may also
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220be valid application data but currently it can only fail if given an invalid \fBidx\fR
221parameter.
222.PP
223On failure an error code can be obtained from ERR_get_error(3).
224.SH "SEE ALSO"
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225RSA_get_ex_new_index(3),
226DSA_get_ex_new_index(3),
227DH_get_ex_new_index(3)
228.SH "HISTORY"
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229\fICRYPTO_set_ex_data()\fR and \fICRYPTO_get_ex_data()\fR have been available since SSLeay 0.9.0.
230
231.rn }` ''
232.IX Title "CRYPTO_set_ex_data 3"
233.IX Name "CRYPTO_set_ex_data, CRYPTO_get_ex_data - internal application specific data functions"
234
235.IX Header "NAME"
236
237.IX Header "SYNOPSIS"
238
239.IX Header "DESCRIPTION"
240
241.IX Header "RETURN VALUES"
242
243.IX Header "SEE ALSO"
244
984263bc 245.IX Header "HISTORY"
74dab6c2 246