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Diffstat (limited to 'docs/syscall_descriptions_syntax.md')
| -rw-r--r-- | docs/syscall_descriptions_syntax.md | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/docs/syscall_descriptions_syntax.md b/docs/syscall_descriptions_syntax.md index a0b7b45b5..b8ded85bf 100644 --- a/docs/syscall_descriptions_syntax.md +++ b/docs/syscall_descriptions_syntax.md @@ -168,6 +168,28 @@ type bool64 int64[0:1] type boolptr intptr[0:1] ``` +## Type Templates + +**Note: type templates are experimental, can have error handling bugs and are subject to change** + +Type templates can be declared as follows: + +``` +type buffer[DIR] ptr[DIR, array[int8]] +type fileoff[BASE] BASE +type nlattr[TYPE, PAYLOAD] { + nla_len len[parent, int16] + nla_type const[TYPE, int16] + payload PAYLOAD +} [align_4] +``` + +and later used as follows: + +``` +syscall(a buffer[in], b fileoff[int64], c ptr[in, nlattr[FOO, int32]]) +``` + ## Length You can specify length of a particular field in struct or a named argument by using `len`, `bytesize` and `bitsize` types, for example: |