[RFC v17][PATCH 16/60] pids 6/7: Define do_fork_with_pids()
From: Oren Laadan <hidden>
Date: 2009-07-22 10:10:37
Also in:
linux-mm, lkml
Subsystem:
exec & binfmt api, elf, memory management - core, scheduler, the rest · Maintainers:
Kees Cook, Andrew Morton, David Hildenbrand, Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
From: Sukadev Bhattiprolu <redacted> do_fork_with_pids() is same as do_fork(), except that it takes an additional, 'pid_set', parameter. This parameter, currently unused, specifies the set of target pids of the process in each of its pid namespaces. Changelog[v3]: - Fix "long-line" warning from checkpatch.pl Changelog[v2]: - To facilitate moving architecture-inpdendent code to kernel/fork.c pass in 'struct target_pid_set __user *' to do_fork_with_pids() rather than 'pid_t *' (next patch moves the arch-independent code to kernel/fork.c) Signed-off-by: Sukadev Bhattiprolu <redacted> Acked-by: Serge Hallyn <redacted> Reviewed-by: Oren Laadan <redacted> --- include/linux/sched.h | 3 +++ include/linux/types.h | 5 +++++ kernel/fork.c | 16 ++++++++++++++-- 3 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 16a982e..e2ebb41 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h@@ -2052,6 +2052,9 @@ extern int disallow_signal(int); extern int do_execve(char *, char __user * __user *, char __user * __user *, struct pt_regs *); extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); +extern long do_fork_with_pids(unsigned long, unsigned long, struct pt_regs *, + unsigned long, int __user *, int __user *, + struct target_pid_set __user *pid_set); struct task_struct *fork_idle(int); extern void set_task_comm(struct task_struct *tsk, char *from);
diff --git a/include/linux/types.h b/include/linux/types.h
index c42724f..d9efefe 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h@@ -204,6 +204,11 @@ struct ustat { char f_fpack[6]; }; +struct target_pid_set { + int num_pids; + pid_t *target_pids; +}; + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #endif /* _LINUX_TYPES_H */
diff --git a/kernel/fork.c b/kernel/fork.c
index 6f90cf4..64d53d9 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c@@ -1341,12 +1341,13 @@ struct task_struct * __cpuinit fork_idle(int cpu) * It copies the process, and if successful kick-starts * it and waits for it to finish using the VM if required. */ -long do_fork(unsigned long clone_flags, +long do_fork_with_pids(unsigned long clone_flags, unsigned long stack_start, struct pt_regs *regs, unsigned long stack_size, int __user *parent_tidptr, - int __user *child_tidptr) + int __user *child_tidptr, + struct target_pid_set __user *pid_setp) { struct task_struct *p; int trace = 0;
@@ -1455,6 +1456,17 @@ long do_fork(unsigned long clone_flags, return nr; } +long do_fork(unsigned long clone_flags, + unsigned long stack_start, + struct pt_regs *regs, + unsigned long stack_size, + int __user *parent_tidptr, + int __user *child_tidptr) +{ + return do_fork_with_pids(clone_flags, stack_start, regs, stack_size, + parent_tidptr, child_tidptr, NULL); +} + #ifndef ARCH_MIN_MMSTRUCT_ALIGN #define ARCH_MIN_MMSTRUCT_ALIGN 0 #endif
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1.6.0.4
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