linux-dev/arch/um/os-Linux/util.c, branch linus/master

isystem: trim/fixup stdarg.h and other headers

2021-08-19T00:02:55Z

Delete/fixup few includes in anticipation of global -isystem compile option removal. Note: crypto/aegis128-neon-inner.c keeps due to redefinition of uintptr_t error (one definition comes from , another from ). Signed-off-by: Alexey Dobriyan Signed-off-by: Masahiro Yamada

um: Some fixes to build UML with musl

2020-10-11T21:13:06Z

musl toolchain and headers are a bit more strict. These fixes enable building UML with musl as well as seem not to break on glibc. Signed-off-by: Ignat Korchagin Tested-by: Brendan Higgins Signed-off-by: Richard Weinberger

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15T19:37:17Z

Convert files to use SPDX header. All files are licensed under the GPLv2. Signed-off-by: Alex Dewar Signed-off-by: Richard Weinberger

um: Add os_warn() for pre-boot warning/error messages

2017-07-05T21:18:02Z

Add os_warn() for printing out pre-boot warning/error messages in stderr. The messages via os_warn() are not suppressed by quiet option. Signed-off-by: Masami Hiramatsu Signed-off-by: Richard Weinberger

um: Add os_info() for pre-boot information messages

2017-07-05T21:17:16Z

Add os_info() for printing out pre-boot information level messages in stderr. The messages via os_info() are suppressed by "quiet" kernel command line. Signed-off-by: Masami Hiramatsu Signed-off-by: Richard Weinberger

um: Cleanup SIGTERM handling

2013-09-07T08:56:58Z

Richard reported that some UML processes survive if the UML main process receives a SIGTERM. This issue was caused by a wrongly placed signal(SIGTERM, SIG_DFL) in init_new_thread_signals(). It disabled the UML exit handler accidently for some processes. The correct solution is to disable the fatal handler for all UML helper threads/processes. Such that last_ditch_exit() does not get called multiple times and all processes can exit due to SIGTERM. Reported-and-tested-by: Richard W.M. Jones Signed-off-by: Richard Weinberger

um: get rid of pointless include "..." where include <...> will do

2012-10-09T20:28:45Z

Signed-off-by: Al Viro Signed-off-by: Richard Weinberger

um: -include user.h for USER_OBJ, trim includes

2011-11-02T13:14:44Z

Signed-off-by: Al Viro Signed-off-by: Richard Weinberger

um: add earlyprintk support

2011-05-25T15:39:41Z

User Mode Linux can also benefit from earlyprintk. UML's earlyprintk writes kernel messages directly to stdout. Signed-off-by: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

um: fix abort

2011-05-18T09:55:23Z

os_dump_core() uses abort() to terminate UML in case of an fatal error. glibc's abort() calls raise(SIGABRT) which makes use of tgkill(). tgkill() has no effect within UML's kernel threads because they are not pthreads. As fallback abort() executes an invalid instruction to terminate the process. Therefore UML gets killed by SIGSEGV and leaves a ugly log entry in the host's kernel ring buffer. To get rid of this we use our own abort routine. Signed-off-by: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds