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Diffstat (limited to 'doc/crypto/BIO_s_fd.pod')
-rw-r--r-- | doc/crypto/BIO_s_fd.pod | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/doc/crypto/BIO_s_fd.pod b/doc/crypto/BIO_s_fd.pod deleted file mode 100644 index b1de1d101549..000000000000 --- a/doc/crypto/BIO_s_fd.pod +++ /dev/null @@ -1,89 +0,0 @@ -=pod - -=head1 NAME - -BIO_s_fd, BIO_set_fd, BIO_get_fd, BIO_new_fd - file descriptor BIO - -=head1 SYNOPSIS - - #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); - -=head1 DESCRIPTION - -BIO_s_fd() returns the file descriptor BIO method. This is a wrapper -round the platforms file descriptor routines such as read() and write(). - -BIO_read() and BIO_write() read or write the underlying descriptor. -BIO_puts() is supported but BIO_gets() is not. - -If the close flag is set then then close() is called on the underlying -file descriptor when the BIO is freed. - -BIO_reset() attempts to change the file pointer to the start of file -using lseek(fd, 0, 0). - -BIO_seek() sets the file pointer to position B<ofs> from start of file -using lseek(fd, ofs, 0). - -BIO_tell() returns the current file position by calling lseek(fd, 0, 1). - -BIO_set_fd() sets the file descriptor of BIO B<b> to B<fd> and the close -flag to B<c>. - -BIO_get_fd() places the file descriptor in B<c> if it is not NULL, it also -returns the file descriptor. If B<c> is not NULL it should be of type -(int *). - -BIO_new_fd() returns a file descriptor BIO using B<fd> and B<close_flag>. - -=head1 NOTES - -The behaviour of BIO_read() and BIO_write() depends on the behavior of the -platforms read() and write() calls on the descriptor. If the underlying -file descriptor is in a non blocking mode then the BIO will behave in the -manner described in the L<BIO_read(3)|BIO_read(3)> and L<BIO_should_retry(3)|BIO_should_retry(3)> -manual pages. - -File descriptor BIOs should not be used for socket I/O. Use socket BIOs -instead. - -=head1 RETURN VALUES - -BIO_s_fd() returns the file descriptor BIO method. - -BIO_reset() returns zero for success and -1 if an error occurred. -BIO_seek() and BIO_tell() return the current file position or -1 -is an error occurred. These values reflect the underlying lseek() -behaviour. - -BIO_set_fd() always returns 1. - -BIO_get_fd() returns the file descriptor or -1 if the BIO has not -been initialized. - -BIO_new_fd() returns the newly allocated BIO or NULL is an error -occurred. - -=head1 EXAMPLE - -This is a file descriptor BIO version of "Hello World": - - BIO *out; - out = BIO_new_fd(fileno(stdout), BIO_NOCLOSE); - BIO_printf(out, "Hello World\n"); - BIO_free(out); - -=head1 SEE ALSO - -L<BIO_seek(3)|BIO_seek(3)>, L<BIO_tell(3)|BIO_tell(3)>, -L<BIO_reset(3)|BIO_reset(3)>, L<BIO_read(3)|BIO_read(3)>, -L<BIO_write(3)|BIO_write(3)>, L<BIO_puts(3)|BIO_puts(3)>, -L<BIO_gets(3)|BIO_gets(3)>, L<BIO_printf(3)|BIO_printf(3)>, -L<BIO_set_close(3)|BIO_set_close(3)>, L<BIO_get_close(3)|BIO_get_close(3)> |