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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-20 15:28:25 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2012-09-27 18:04:55 +0200 |
| commit | d2ce4e92fa4f79a5fdb4cc912b411280afe21697 (patch) | |
| tree | d7b1cae518d150b30342cef8dfa1a76e82005d25 /arch/um/kernel/syscall.c | |
| parent | um: let signal_delivered() do SIGTRAP on singlestepping into handler (diff) | |
| download | linux-d2ce4e92fa4f79a5fdb4cc912b411280afe21697.tar.xz linux-d2ce4e92fa4f79a5fdb4cc912b411280afe21697.zip | |
um: kill thread->forking
we only use that to tell copy_thread() done by syscall from that
done by kernel_thread(). However, it's easier to do simply by
checking PF_KTHREAD in thread flags.
Merge sys_clone() guts for 32bit and 64bit, while we are at it...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/um/kernel/syscall.c')
| -rw-r--r-- | arch/um/kernel/syscall.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c index f958cb876ee3..a4c6d8eee74c 100644 --- a/arch/um/kernel/syscall.c +++ b/arch/um/kernel/syscall.c @@ -17,25 +17,25 @@ long sys_fork(void) { - long ret; - - current->thread.forking = 1; - ret = do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs), + return do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs), ¤t->thread.regs, 0, NULL, NULL); - current->thread.forking = 0; - return ret; } long sys_vfork(void) { - long ret; - - current->thread.forking = 1; - ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, + return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, UPT_SP(¤t->thread.regs.regs), ¤t->thread.regs, 0, NULL, NULL); - current->thread.forking = 0; - return ret; +} + +long sys_clone(unsigned long clone_flags, unsigned long newsp, + void __user *parent_tid, void __user *child_tid) +{ + if (!newsp) + newsp = UPT_SP(¤t->thread.regs.regs); + + return do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid, + child_tid); } long old_mmap(unsigned long addr, unsigned long len, |