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socket_fs: show ioctl FIONREAD error message only once 

Fixes #2969
This commit is contained in:
Christian Prochaska 2018-09-04 14:39:24 +02:00 committed by Christian Helmuth
parent 35f61475f5
commit 5adb6f0c5f
1 changed files with 23 additions and 0 deletions
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23
repos/libports/src/lib/libc/socket_fs_plugin.cc
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@ -30,6 +30,7 @@
#include <unistd.h>
#include <ctype.h>
#include <stdio.h>
#include <sys/ioctl.h>
/* libc-internal includes */
#include "socket_fs_plugin.h"
@ -257,6 +258,7 @@ struct Socket_fs::Plugin : Libc::Plugin
int fcntl(Libc::File_descriptor *, int, long) override;
int close(Libc::File_descriptor *) override;
int select(int, fd_set *, fd_set *, fd_set *, timeval *) override;
int ioctl(Libc::File_descriptor *, int, char *) override;
};
@ -963,6 +965,27 @@ int Socket_fs::Plugin::close(Libc::File_descriptor *fd)
}
int Socket_fs::Plugin::ioctl(Libc::File_descriptor *, int request, char*)
{
if (request == FIONREAD) {
/*
* This request occurs quite often when using the Arora web browser,
* so print the error message only once.
*/
static bool print_fionread_error_message = true;
if (print_fionread_error_message) {
Genode::error(__func__, " request FIONREAD not supported on sockets"
" (this message will not be shown again)");
print_fionread_error_message = false;
}
return -1;
}
Genode::error(__func__, " request ", request, " not supported on sockets");
return -1;
}
Plugin & Socket_fs::plugin()
{
static Plugin inst;