17 Dec, 2009
1 commit
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* hpux_pipe() - no need to take BKL
* sys32_pipe() in arch/x86/ia32 and xtensa_pipe() in arch/xtensa -
no need at all, since both functions are open-coded sys_pipe()Signed-off-by: Al Viro
11 Dec, 2009
1 commit
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New helper - sys_mmap_pgoff(); switch syscalls to using it.
Acked-by: David S. Miller
Signed-off-by: Al Viro
25 Jul, 2008
1 commit
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This patch introduces the new syscall pipe2 which is like pipe but it also
takes an additional parameter which takes a flag value. This patch implements
the handling of O_CLOEXEC for the flag. I did not add support for the new
syscall for the architectures which have a special sys_pipe implementation. I
think the maintainers of those archs have the chance to go with the unified
implementation but that's up to them.The implementation introduces do_pipe_flags. I did that instead of changing
all callers of do_pipe because some of the callers are written in assembler.
I would probably screw up changing the assembly code. To avoid breaking code
do_pipe is now a small wrapper around do_pipe_flags. Once all callers are
changed over to do_pipe_flags the old do_pipe function can be removed.The following test must be adjusted for architectures other than x86 and
x86-64 and in case the syscall numbers changed.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include
#include
#include
#include#ifndef __NR_pipe2
# ifdef __x86_64__
# define __NR_pipe2 293
# elif defined __i386__
# define __NR_pipe2 331
# else
# error "need __NR_pipe2"
# endif
#endifint
main (void)
{
int fd[2];
if (syscall (__NR_pipe2, fd, 0) != 0)
{
puts ("pipe2(0) failed");
return 1;
}
for (int i = 0; i < 2; ++i)
{
int coe = fcntl (fd[i], F_GETFD);
if (coe == -1)
{
puts ("fcntl failed");
return 1;
}
if (coe & FD_CLOEXEC)
{
printf ("pipe2(0) set close-on-exit for fd[%d]\n", i);
return 1;
}
}
close (fd[0]);
close (fd[1]);if (syscall (__NR_pipe2, fd, O_CLOEXEC) != 0)
{
puts ("pipe2(O_CLOEXEC) failed");
return 1;
}
for (int i = 0; i < 2; ++i)
{
int coe = fcntl (fd[i], F_GETFD);
if (coe == -1)
{
puts ("fcntl failed");
return 1;
}
if ((coe & FD_CLOEXEC) == 0)
{
printf ("pipe2(O_CLOEXEC) does not set close-on-exit for fd[%d]\n", i);
return 1;
}
}
close (fd[0]);
close (fd[1]);puts ("OK");
return 0;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Signed-off-by: Ulrich Drepper
Acked-by: Davide Libenzi
Cc: Michael Kerrisk
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Aug, 2007
1 commit
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Xtensa passes long long arguments in a even/odd register pair,
so we also need to shuffle the arguments when passed through the
system call to avoid an empty argument register.Signed-off-by: Chris Zankel
14 Dec, 2006
1 commit
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The kernel termios (ktermios) changes were somehow missed for Xtensa. This
patch adds the ktermios structure and also includes some minor file name
fix that was missed in the syscall patch.Signed-off-by: Chris Zankel
Acked-by: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Dec, 2006
1 commit
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This is a long outstanding patch to finally fix the syscall interface. The
constants used for the system calls are those we have provided in our libc
patches. This patch also fixes the shmbuf and stat structure, and fcntl
definitions.Signed-off-by: Chris Zankel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds