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size_t write(int fd, const char *buf, size_t count); write CAN messages to the network
- Parameters:
-
| fd | The descriptor to write to. |
| buf | The data buffer to write (array of CAN canmsg_t). |
| count | The number of bytes to write. |
write writes up to count CAN messages to the CAN controller referenced by the file descriptor fd from the buffer starting at buf.
- Errors
the following errors can occur
EBADF fd is not a valid file descriptor or is not open for writing.
EINVAL fd is attached to an object which is unsuitable for writing.
EFAULT buf is outside your accessible address space.
EINTR The call was interrupted by a signal before any data was written.
- Returns:
- On success, the number of CAN messages written are returned (zero indicates nothing was written). On error, -1 is returned, and errno is set appropriately.
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