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Updated comments in curl.cpp (related to #1827) (#2052)

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Takeshi Nakatani 2022-11-05 11:45:28 +09:00 committed by GitHub
parent 30353f1a83
commit aec7efc3af
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1 changed files with 6 additions and 1 deletions
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7
src/curl.cpp
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@ -3304,8 +3304,13 @@ int S3fsCurl::PutRequest(const char* tpath, headers_t& meta, int fd)
return -EINVAL;
}
if(-1 != fd){
// TODO: is this necessary?
// duplicate fd
//
// [NOTE]
// This process requires FILE*, then it is linked to fd with fdopen.
// After processing, the FILE* is closed with fclose, and fd is closed together.
// The fd should not be closed here, so call dup here to duplicate it.
//
int fd2;
if(-1 == (fd2 = dup(fd)) || -1 == fstat(fd2, &st) || 0 != lseek(fd2, 0, SEEK_SET) || NULL == (file = fdopen(fd2, "rb"))){
S3FS_PRN_ERR("Could not duplicate file descriptor(errno=%d)", errno);