1MONGOC_GRIDFS_FILE_SEEK(3)         libmongoc        MONGOC_GRIDFS_FILE_SEEK(3)
2
3
4

NAME

6       mongoc_gridfs_file_seek - mongoc_gridfs_file_seek()
7

SYNOPSIS

9          int
10          mongoc_gridfs_file_seek (mongoc_gridfs_file_t *file, int64_t delta, int whence);
11

PARAMETERS

13       · file: A mongoc_gridfs_file_t.
14
15       · delta: The amount to move the file position. May be positive or nega‐
16         tive.
17
18       · whence: One of SEEK_SET, SEEK_CUR or SEEK_END.
19

DESCRIPTION

21       Adjust the file position pointer in the given file by  delta,  starting
22       from  the  position  whence.  The  whence argument is interpreted as in
23       fseek(2):
24
25                       ┌─────────┬────────────────────────────┐
26                       │SEEK_SET │ Set the position  relative │
27                       │         │ to the start of the file.  │
28                       ├─────────┼────────────────────────────┤
29                       │SEEK_CUR │ Move delta relative to the │
30                       │         │ current file position.     │
31                       ├─────────┼────────────────────────────┤
32                       │SEEK_END │ Move delta relative to the │
33                       │         │ end of the file.           │
34                       └─────────┴────────────────────────────┘
35
36       On  success,  the  file's  underlying position pointer is set appropri‐
37       ately. On failure, the file position is NOT changed and errno is set to
38       indicate the error.
39

ERRORS

41                        ┌───────┬────────────────────────────┐
42                        │EINVAL │ whence   is   not  one  of │
43                        │       │ SEEK_SET,   SEEK_CUR    or │
44                        │       │ SEEK_END.                  │
45                        ├───────┼────────────────────────────┤
46                        │EINVAL │ The  resulting  file posi‐ │
47                        │       │ tion would be negative.    │
48                        └───────┴────────────────────────────┘
49

RETURNS

51       Returns 0 if successful; otherwise -1 and errno is set.
52

AUTHOR

54       MongoDB, Inc
55

57       2017-present, MongoDB, Inc
58
59
60
61
621.16.2                           Feb 25, 2020       MONGOC_GRIDFS_FILE_SEEK(3)
Impressum