diff options
Diffstat (limited to 'docs/libcurl/curl_mime_data_cb.3')
| -rw-r--r-- | docs/libcurl/curl_mime_data_cb.3 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/docs/libcurl/curl_mime_data_cb.3 b/docs/libcurl/curl_mime_data_cb.3 index f8421d5da..105968a0e 100644 --- a/docs/libcurl/curl_mime_data_cb.3 +++ b/docs/libcurl/curl_mime_data_cb.3 @@ -5,7 +5,7 @@ .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * -.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al. +.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al. .\" * .\" * This software is licensed as described in the file COPYING, which .\" * you should have received as part of this distribution. The terms @@ -91,6 +91,12 @@ The callback function must return \fICURL_SEEKFUNC_OK\fP on success, is free to work around the problem if possible. The latter can sometimes be done by instead reading from the input or similar. +Care must be taken if the part is bound to a curl easy handle that is later +duplicated: the \fIarg\fP pointer argument is also duplicated, resulting in +the pointed item to be shared between the original and the copied handle. +In particular, special attention should be given to the \fIfreefunc\fP +procedure code since it will be called twice with the same argument. + .SH AVAILABILITY As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0. .SH RETURN VALUE @@ -157,4 +163,5 @@ int seek_callback(void *arg, curl_off_t offset, int origin) .SH "SEE ALSO" .BR curl_mime_addpart "(3)," .BR curl_mime_data "(3)," -.BR curl_mime_name "(3)" +.BR curl_mime_name "(3)," +.BR curl_easy_duphandle "(3)" |