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unified (weak) sys_pipe implementation

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This replaces the duplicated arch-specific versions of "sys_pipe()" with
one unified implementation.  This removes almost 250 lines of duplicated
code.

It's marked __weak, so that *if* an architecture wants to override the
default implementation it can do so by simply having its own replacement
version, since many architectures use alternate calling conventions for
the 'pipe()' system call for legacy reasons (ie traditional UNIX
implementations often return the two file descriptors in registers)

I still haven't changed the cris version even though Linus says the BKL
isn't needed.  The arch maintainer can easily do it if there are really
no obstacles.

Signed-off-by: Ulrich Drepper <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ulrich Drepper 2008-05-03 15:10:37 -04:00 • committed by Linus Torvalds
commit d35c7b0e54
18 changed files with 18 additions and 265 deletions
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2
include/asm-powerpc/syscalls.h
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@ -30,7 +30,7 @@ asmlinkage int sys_fork(unsigned long p1, unsigned long p2,
asmlinkage int sys_vfork(unsigned long p1, unsigned long p2,
unsigned long p3, unsigned long p4, unsigned long p5,
unsigned long p6, struct pt_regs *regs);
asmlinkage int sys_pipe(int __user *fildes);
asmlinkage long sys_pipe(int __user *fildes);
asmlinkage long sys_rt_sigaction(int sig,
const struct sigaction __user *act,
struct sigaction __user *oact, size_t sigsetsize);