Default handler for _IO_WRITE messages
#include <sys/iofunc.h> int iofunc_write_default( resmgr_context_t* ctp, io_write_t* msg, iofunc_ocb_t* ocb );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The iofunc_write_default() function implements POSIX semantics for the client's write() call, which is received as an _IO_WRITE message by the resource manager. It doesn't actually write the given data anywhere.
You can place this function directly into the resmgr_io_funcs_t table passed as the io_funcs argument to resmgr_attach(), at the write position, or you can call iofunc_func_init() to initialize all of the functions to their default values.
The iofunc_write_default() function calls iofunc_write_verify() to verify the permissions on the file. If the permissions are correct, iofunc_write_default() indicates that it wrote the requested number of bytes.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |