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CURLOPT_SEEKDATA(3) Library Functions Manual CURLOPT_SEEKDATA(3) NAME CURLOPT_SEEKDATA - pointer passed to the seek callback SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, void *pointer); DESCRIPTION Data pointer to pass to the seek callback function. If you use the CUR- LOPT_SEEKFUNCTION(3) option, this is the pointer you get as input. DEFAULT If you do not set this, NULL is passed to the callback. PROTOCOLS This functionality affects ftp, http and sftp EXAMPLE #include <unistd.h> /* for lseek() */ struct data { int our_fd; }; static int seek_cb(void *clientp, curl_off_t offset, int origin) { struct data *d = (struct data *)clientp; lseek(d->our_fd, offset, origin); return CURL_SEEKFUNC_OK; } int main(void) { struct data seek_data; CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, seek_cb); curl_easy_setopt(curl, CURLOPT_SEEKDATA, &seek_data); } } AVAILABILITY Added in curl 7.18.0 RETURN VALUE SEE ALSO CURLOPT_DEBUGFUNCTION(3), CURLOPT_IOCTLFUNCTION(3), CURLOPT_SEEKFUNC- TION(3), CURLOPT_STDERR(3) libcurl 2025-06-03 CURLOPT_SEEKDATA(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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