Date: Tue, 25 Mar 2025 13:29:26 +0000
From: bugzilla-noreply@freebsd.org
To: emulation@FreeBSD.org
Subject: [Bug 285408] linux: jid 1 pid 88998 (server): sysctl {1,40,6} is not implemented
Message-ID: <bug-285408-4077-5QLtxaUgIk@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-285408-4077@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285408 --- Comment #6 from Jason Mader <jasonmader@gmail.com> --- Found that the message may come from libressl crypto/compat/getentropy_linux.c #ifdef SYS__sysctl /* * Try to use sysctl CTL_KERN, KERN_RANDOM, RANDOM_UUID. * sysctl is a failsafe API, so it guarantees a result. This * should work inside a chroot, or when file descriptors are * exhausted. * * However this can fail if the Linux kernel removes support * for sysctl. Starting in 2007, there have been efforts to * deprecate the sysctl API/ABI, and push callers towards use * of the chroot-unavailable fd-using /proc mechanism -- * essentially the same problems as /dev/urandom. * * Numerous setbacks have been encountered in their deprecation * schedule, so as of June 2014 the kernel ABI still exists on * most Linux architectures. The sysctl() stub in libc is missing * on some systems. There are also reports that some kernels * spew messages to the console. */ ret = getentropy_sysctl(buf, len); if (ret != -1) return (ret); #endif /* SYS__sysctl */ #ifdef SYS__sysctl static int getentropy_sysctl(void *buf, size_t len) { static int mib[] = { CTL_KERN, KERN_RANDOM, RANDOM_UUID }; size_t i; int save_errno = errno; for (i = 0; i < len; ) { size_t chunk = MINIMUM(len - i, 16); /* SYS__sysctl because some systems already removed sysctl() */ struct __sysctl_args args = { .name = mib, .nlen = 3, .oldval = (char *)buf + i, .oldlenp = &chunk, }; if (syscall(SYS__sysctl, &args) != 0) goto sysctlfailed; i += chunk; } errno = save_errno; return (0); /* satisfied */ sysctlfailed: errno = EIO; return (-1); } #endif /* SYS__sysctl */ -- You are receiving this mail because: You are the assignee for the bug.home | help
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