lkml.org 
[lkml]   [1996]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: POSIX compatibility?

Harald Koenig <koenig@tat.physik.uni-tuebingen.de> writes:

|>> Tracing a program changes the behaviour of interruptable syscalls. This
|>> should be fixed in the kernel sometime, but it is difficult because the
|>> context of the interrupted syscall is lost after the debugger has been
|>> called. I tried to get it right in Linux/m68k, but i didn't succeed. The
|>> GDB testsuite is a good place to find the difficult parts.
|>>
|>> So actually read() does return EINTR, but only when not tracing.

|> Ulrich's program doesn't return from read() even when not run with strace.
|> I've tested it with Linux 2.0.26 for both Intel (a.out and Elf) and DEC ALpha.

This is a different issue: libio (fgetc) always restarts read() after
EINTR. But that's exactly what is desired, isn't it? Otherwise the test
program would not exit with zero (result = ch == EOF && errno == EINTR).

Andreas.

\
 
 \ /
  Last update: 2005-03-22 13:38    [W:0.048 / U:1.944 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site