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Diffstat (limited to 'secure/lib/libcrypto/man/BIO_s_fd.3')
| -rw-r--r-- | secure/lib/libcrypto/man/BIO_s_fd.3 | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/BIO_s_fd.3 b/secure/lib/libcrypto/man/BIO_s_fd.3 new file mode 100644 index 0000000..02a2d7b --- /dev/null +++ b/secure/lib/libcrypto/man/BIO_s_fd.3 @@ -0,0 +1,215 @@ +.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.23) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. Capital omega is used to do unbreakable dashes and +.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, +.\" nothing in troff, for use with C<>. +.tr \(*W- +.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.ie n \{\ +. ds -- \(*W- +. ds PI pi +. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch +. ds L" "" +. ds R" "" +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds -- \|\(em\| +. ds PI \(*p +. ds L" `` +. ds R" '' +'br\} +.\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" +.\" If the F register is turned on, we'll generate index entries on stderr for +.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index +.\" entries marked with X<> in POD. Of course, you'll have to process the +.\" output yourself in some meaningful fashion. +.ie \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. nr % 0 +. rr F +.\} +.el \{\ +. de IX +.. +.\} +.\" +.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). +.\" Fear. Run. Save yourself. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +BIO_s_fd, BIO_set_fd, BIO_get_fd, BIO_new_fd \- file descriptor BIO +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/bio.h> +\& +\& BIO_METHOD * BIO_s_fd(void); +\& +\& #define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd) +\& #define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c) +\& +\& BIO *BIO_new_fd(int fd, int close_flag); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fIBIO_s_fd()\fR returns the file descriptor \s-1BIO\s0 method. This is a wrapper +round the platforms file descriptor routines such as \fIread()\fR and \fIwrite()\fR. +.PP +\&\fIBIO_read()\fR and \fIBIO_write()\fR read or write the underlying descriptor. +\&\fIBIO_puts()\fR is supported but \fIBIO_gets()\fR is not. +.PP +If the close flag is set then then \fIclose()\fR is called on the underlying +file descriptor when the \s-1BIO\s0 is freed. +.PP +\&\fIBIO_reset()\fR attempts to change the file pointer to the start of file +using lseek(fd, 0, 0). +.PP +\&\fIBIO_seek()\fR sets the file pointer to position \fBofs\fR from start of file +using lseek(fd, ofs, 0). +.PP +\&\fIBIO_tell()\fR returns the current file position by calling lseek(fd, 0, 1). +.PP +\&\fIBIO_set_fd()\fR sets the file descriptor of \s-1BIO\s0 \fBb\fR to \fBfd\fR and the close +flag to \fBc\fR. +.PP +\&\fIBIO_get_fd()\fR places the file descriptor in \fBc\fR if it is not \s-1NULL\s0, it also +returns the file descriptor. If \fBc\fR is not \s-1NULL\s0 it should be of type +(int *). +.PP +\&\fIBIO_new_fd()\fR returns a file descriptor \s-1BIO\s0 using \fBfd\fR and \fBclose_flag\fR. +.SH "NOTES" +.IX Header "NOTES" +The behaviour of \fIBIO_read()\fR and \fIBIO_write()\fR depends on the behavior of the +platforms \fIread()\fR and \fIwrite()\fR calls on the descriptor. If the underlying +file descriptor is in a non blocking mode then the \s-1BIO\s0 will behave in the +manner described in the \fIBIO_read\fR\|(3) and \fIBIO_should_retry\fR\|(3) +manual pages. +.PP +File descriptor BIOs should not be used for socket I/O. Use socket BIOs +instead. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fIBIO_s_fd()\fR returns the file descriptor \s-1BIO\s0 method. +.PP +\&\fIBIO_reset()\fR returns zero for success and \-1 if an error occurred. +\&\fIBIO_seek()\fR and \fIBIO_tell()\fR return the current file position or \-1 +is an error occurred. These values reflect the underlying \fIlseek()\fR +behaviour. +.PP +\&\fIBIO_set_fd()\fR always returns 1. +.PP +\&\fIBIO_get_fd()\fR returns the file descriptor or \-1 if the \s-1BIO\s0 has not +been initialized. +.PP +\&\fIBIO_new_fd()\fR returns the newly allocated \s-1BIO\s0 or \s-1NULL\s0 is an error +occurred. +.SH "EXAMPLE" +.IX Header "EXAMPLE" +This is a file descriptor \s-1BIO\s0 version of \*(L"Hello World\*(R": +.PP +.Vb 4 +\& BIO *out; +\& out = BIO_new_fd(fileno(stdout), BIO_NOCLOSE); +\& BIO_printf(out, "Hello World\en"); +\& BIO_free(out); +.Ve +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fIBIO_seek\fR\|(3), \fIBIO_tell\fR\|(3), +\&\fIBIO_reset\fR\|(3), \fIBIO_read\fR\|(3), +\&\fIBIO_write\fR\|(3), \fIBIO_puts\fR\|(3), +\&\fIBIO_gets\fR\|(3), \fIBIO_printf\fR\|(3), +\&\fIBIO_set_close\fR\|(3), \fIBIO_get_close\fR\|(3) |
