SOCU:poll: Difference between revisions
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→Events: Fix values for flags and add new flags |
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| Line 82: | Line 82: | ||
! Value | ! Value | ||
! Name | ! Name | ||
! Description | ! Description | ||
|- | |- | ||
| 0x01 | | 0x01 | ||
| | | POLLRDNORM | ||
| | | Normal data can be read. | ||
|- | |- | ||
| 0x02 | | 0x02 | ||
| | | POLLRDBAND | ||
| | | Priority Band Data can be read. | ||
|- | |- | ||
| 0x04 | | 0x04 | ||
| | | POLLPRI | ||
| | | Urgent data can be read. | ||
|- | |- | ||
| 0x08 | | 0x08 | ||
| POLLWRNORM | |||
| Normal data can be written. | |||
|- | |||
| 0x10 | |||
| POLLWRBAND | |||
| Priority data can be written. | |||
|- | |||
| 0x20 | |||
| POLLERR | | POLLERR | ||
| Socket has an error condition. | | Socket has an error condition. | ||
|- | |- | ||
| | | 0x40 | ||
| | | POLLHUP | ||
| | | Socket has been disconnected. | ||
|- | |- | ||
| | | 0x80 | ||
| POLLNVAL | | POLLNVAL | ||
| Invalid socket handle. This is set if you use fd=-1, which is non-standard behavior. | | Invalid socket handle. This is set if you use fd=-1, which is non-standard behavior. | ||
|- | |- | ||
| | | POLLRDNORM <nowiki>|</nowiki> POLLRDBAND | ||
| | | POLLIN | ||
| | | Data can be read. | ||
| | |- | ||
| POLLWRNORM | |||
| POLLOUT | |||
| Data can be written. | |||
|} | |} | ||
Revision as of 14:05, 24 November 2019
Request
| Index Word | Description |
|---|---|
| 0 | Header code [0x00140084] |
| 1 | nfds_t nfds |
| 2 | int timeout |
| 3 | Value 0x20 (processID header) |
| 4 | ProcessID set by the ARM11 kernel. |
| 5 | (insize<<14) | 0x2802 |
| 6 | Pointer to input pollfd struct array |
The following is located 0x100-bytes after the beginning of the above command buffer:
| Index Word | Description |
|---|---|
| 0 | (outsize<<14) | 2 |
| 1 | Pointer to output pollfd struct array |
Response
| Index Word | Description |
|---|---|
| 0 | Header code |
| 1 | Result code |
| 2 | POSIX return value |
pollfd struct
| Type | Name | Description |
|---|---|---|
| u32 | fd | Socket handle |
| u32 | events | Events to poll for (input) |
| u32 | revents | Events received (output) |
Events
Events are a bitwise set of these flags.
| Value | Name | Description |
|---|---|---|
| 0x01 | POLLRDNORM | Normal data can be read. |
| 0x02 | POLLRDBAND | Priority Band Data can be read. |
| 0x04 | POLLPRI | Urgent data can be read. |
| 0x08 | POLLWRNORM | Normal data can be written. |
| 0x10 | POLLWRBAND | Priority data can be written. |
| 0x20 | POLLERR | Socket has an error condition. |
| 0x40 | POLLHUP | Socket has been disconnected. |
| 0x80 | POLLNVAL | Invalid socket handle. This is set if you use fd=-1, which is non-standard behavior. |
| POLLRDNORM | POLLRDBAND | POLLIN | Data can be read. |
| POLLWRNORM | POLLOUT | Data can be written. |