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| author | Christian Schoenebeck <linux_oss@crudebyte.com> | 2022-07-15 23:32:30 +0200 |
|---|---|---|
| committer | Dominique Martinet <asmadeus@codewreck.org> | 2022-10-05 07:05:41 +0900 |
| commit | 58d331312bf78a10740fc3c6c370c98e8c53fa6b (patch) | |
| tree | d6efd38f3164d0ffa03f04aaca10385af62d8b27 /include/net | |
| parent | e7c6219778e46143ee9e68a25febac10a66383ae (diff) | |
| download | lwn-58d331312bf78a10740fc3c6c370c98e8c53fa6b.tar.gz lwn-58d331312bf78a10740fc3c6c370c98e8c53fa6b.zip | |
9p: add P9_ERRMAX for 9p2000 and 9p2000.u
Add P9_ERRMAX macro to 9P protocol header which reflects the maximum
error string length of Rerror replies for 9p2000 and 9p2000.u protocol
versions. Unfortunately a maximum error string length is not defined by
the 9p2000 spec, picking 128 as value for now, as this seems to be a
common max. size for POSIX error strings in practice.
9p2000.L protocol version uses Rlerror replies instead which does not
contain an error string.
Link: https://lkml.kernel.org/r/3f23191d21032e7c14852b1e1a4ae26417a36739.1657920926.git.linux_oss@crudebyte.com
Signed-off-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/9p/9p.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index 24a509f559ee..13abe013af21 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -331,6 +331,9 @@ enum p9_qid_t { /* size of header for zero copy read/write */ #define P9_ZC_HDR_SZ 4096 +/* maximum length of an error string */ +#define P9_ERRMAX 128 + /** * struct p9_qid - file system entity information * @type: 8-bit type &p9_qid_t |