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MONGOC_GRIDFS_FILE_SEEK(3) libmongoc MONGOC_GRIDFS_FILE_SEEK(3)

NAME

mongoc_gridfs_file_seek - mongoc_gridfs_file_seek()

SYNOPSIS

int
mongoc_gridfs_file_seek (mongoc_gridfs_file_t *file, int64_t delta, int whence);


PARAMETERS

  • file: A mongoc_gridfs_file_t.
  • delta: The amount to move the file position. May be positive or negative.
  • whence: One of SEEK_SET, SEEK_CUR or SEEK_END.

DESCRIPTION

Adjust the file position pointer in the given file by delta, starting from the position whence. The whence argument is interpreted as in fseek(2):

SEEK_SET Set the position relative to the start of the file.
SEEK_CUR Move delta relative to the current file position.
SEEK_END Move delta relative to the end of the file.

On success, the file's underlying position pointer is set appropriately. On failure, the file position is NOT changed and errno is set to indicate the error.

ERRORS

EINVAL whence is not one of SEEK_SET, SEEK_CUR or SEEK_END.
EINVAL The resulting file position would be negative.

RETURNS

Returns 0 if successful; otherwise -1 and errno is set.

AUTHOR

MongoDB, Inc

COPYRIGHT

2017-present, MongoDB, Inc

October 20, 2022 1.23.1