Systemd/src/basic/sigbus.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

void sigbus_install(void);
void sigbus_reset(void);

int sigbus_pop(void **ret);
Add SPDX license identifiers to source files under the LGPL This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460. 2017-11-18 17:09:20 +01:00			`/* SPDX-License-Identifier: LGPL-2.1+ */`
tree-wide: place #pragma once at the same place everywhere Usually, we place the #pragma once before the copyright blurb in header files, but in a few cases we didn't. Move those around, so that we do the same thing everywhere. 2016-02-16 20:05:15 +01:00			`#pragma once`

journald: process SIGBUS for the memory maps we set up Even though we use fallocate() it appears that file systems like btrfs will trigger SIGBUS on certain low-disk-space situation. We should handle that, hence catch the signal, add it to a list of invalidated pages, and replace the page with an empty memory area. After each write check if SIGBUS was triggered, and consider the write invalid if it was. This should make journald a lot more robust with file systems where fallocate() is not reliable, for example all CoW file systems (btrfs...), where changing written data can fail with disk full errors. https://bugzilla.redhat.com/show_bug.cgi?id=1045810 2014-12-30 20:57:53 +01:00			`void sigbus_install(void);`
			`void sigbus_reset(void);`

			`int sigbus_pop(void **ret);`