#include <k/io.h>
#include <k/core.h>
#include <k/def.h>
/* send.c - kiosend() "send to channel"
* ~ lexi hale <lexi@hale.su>
* kiosend() writes to a channel with an open out stream
*/
/* we define all platform functions here,
* whether or not they're for the correct
* platform - only the ones actually called
* by the generated code will be linked */
#include <posix.h>
#include <error_table.h>
kiocond kiosend(kiochan target, ksraw string, sz* len) {
if (target.out.kind == kiostream_closed) return kiocond_fail_closed_stream;
# ifdef KFenv_posix
/* issue the write syscall here and now so we can
* retrieve errno and report it if necessary */
k_platform_syscall_arg args[] = {
target.out.platform_fd, (k_platform_syscall_arg)string.ptr, string.size };
struct k_platform_syscall_answer a = k_platform_syscall
(k_platform_syscall_write,3,args);
sz size = a.ret;
if (size == -1) switch(a.error) {
case k_platform_error_EPERM: return kiocond_fail_forbidden;
case k_platform_error_EINVAL: return kiocond_fail_invalid;
case k_platform_error_EBADF: return kiocond_fail_invalid;
case k_platform_error_EFAULT: return kiocond_fail_pfault;
case k_platform_error_ENOSPC: return kiocond_fail_no_space;
case k_platform_error_EDQUOT: return kiocond_fail_over_quota;
case k_platform_error_EIO: return kiocond_fail_io;
case k_platform_error_EAGAIN: return kiocond_poll;
case k_platform_error_EFBIG: return kiocond_fail_too_big;
case k_platform_error_EINTR: return kiocond_interrupt;
case k_platform_error_EDESTADDRREQ: return kiocond_fail_no_peer;
default: return kiocond_fail;
}
# else
# if KVos == win
# error windows IO send function not yet defined
# else
Knoimpl(kiosend,KVos);
# error missing implementation // boring error for plebs
# endif
# endif
if (len != null) *len = size;
return kiocond_ok;
}