Abstract data type representing a binary data blob. More...
General | |
| struct nl_data * | nl_data_alloc (const void *buf, size_t size) |
| Allocate a new abstract data object. More... | |
| struct nl_data * | nl_data_alloc_attr (const struct nlattr *nla) |
| Allocate abstract data object based on netlink attribute. More... | |
| struct nl_data * | nl_data_clone (const struct nl_data *src) |
| Clone an abstract data object. More... | |
| int | nl_data_append (struct nl_data *data, const void *buf, size_t size) |
| Append data to an abstract data object. More... | |
| void | nl_data_free (struct nl_data *data) |
| Free an abstract data object. More... | |
Attribute Access | |
| void * | nl_data_get (const struct nl_data *data) |
| Get data buffer of abstract data object. More... | |
| size_t | nl_data_get_size (const struct nl_data *data) |
| Get size of data buffer of abstract data object. More... | |
Misc | |
| int | nl_data_cmp (const struct nl_data *a, const struct nl_data *b) |
| Compare two abstract data objects. More... | |
Detailed Description
Abstract data type representing a binary data blob.
Related sections in the development guide:
Header
Function Documentation
◆ nl_data_alloc()
| struct nl_data * nl_data_alloc | ( | const void * | buf, |
| size_t | size | ||
| ) |
Allocate a new abstract data object.
- Parameters
-
buf Data buffer containing the actual data. size Size of data buffer.
Allocates a new abstract data and copies the specified data buffer into the new handle.
- Returns
- Newly allocated data handle or NULL
Definition at line 44 of file data.c.
Referenced by nl_data_alloc_attr(), nl_data_clone(), and rtnl_tc_data().
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◆ nl_data_alloc_attr()
| struct nl_data * nl_data_alloc_attr | ( | const struct nlattr * | nla | ) |
Allocate abstract data object based on netlink attribute.
- Parameters
-
nla Netlink attribute of unspecific type.
Allocates a new abstract data and copies the payload of the attribute to the abstract data object.
- See also
- nla_data_alloc
- Returns
- Newly allocated data handle or NULL
Definition at line 78 of file data.c.
References nl_data_alloc(), nla_data(), and nla_len().
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◆ nl_data_clone()
| struct nl_data * nl_data_clone | ( | const struct nl_data * | src | ) |
Clone an abstract data object.
- Parameters
-
src Abstract data object
- Returns
- Cloned object or NULL
Definition at line 89 of file data.c.
References nl_data_alloc().
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◆ nl_data_append()
| int nl_data_append | ( | struct nl_data * | data, |
| const void * | buf, | ||
| size_t | size | ||
| ) |
Append data to an abstract data object.
- Parameters
-
data Abstract data object. buf Data buffer containing the data to be appended. size Size of data to be apppended.
Reallocates an abstract data and copies the specified data buffer into the new handle.
- Returns
- 0 on success or a negative error code
Definition at line 105 of file data.c.
Referenced by rtnl_u32_add_key().
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◆ nl_data_free()
| void nl_data_free | ( | struct nl_data * | data | ) |
◆ nl_data_get()
| void * nl_data_get | ( | const struct nl_data * | data | ) |
Get data buffer of abstract data object.
- Parameters
-
data Abstract data object.
- Returns
- Data buffer or NULL if empty.
Definition at line 148 of file data.c.
Referenced by nl_data_cmp(), nla_put_data(), rtnl_tc_data(), and rtnl_tc_data_peek().
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◆ nl_data_get_size()
| size_t nl_data_get_size | ( | const struct nl_data * | data | ) |
Get size of data buffer of abstract data object.
- Parameters
-
data Abstract data object.
- Returns
- Size of data buffer.
Definition at line 160 of file data.c.
Referenced by nl_data_cmp(), and nla_put_data().
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◆ nl_data_cmp()
| int nl_data_cmp | ( | const struct nl_data * | a, |
| const struct nl_data * | b | ||
| ) |
Compare two abstract data objects.
- Parameters
-
a Abstract data object. b Another abstract data object.
- Returns
- An integer less than, equal to, or greater than zero if a is found, respectively, to be less than, to match, or be greater than b.
Definition at line 180 of file data.c.
References nl_data_get(), and nl_data_get_size().
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