Jiri Slaby c022a0acad rlimits: implement prlimit64 syscall ... This patch adds the code to support the sys_prlimit64 syscall which modifies-and-returns the rlim values of a selected process atomically. The first parameter, pid, being 0 means current process. Unlike the current implementation, it is a generic interface, architecture indepentent so that we needn't handle compat stuff anymore. In the future, after glibc start to use this we can deprecate sys_setrlimit and sys_getrlimit in favor to clean up the code finally. It also adds a possibility of changing limits of other processes. We check the user's permissions to do that and if it succeeds, the new limits are propagated online. This is good for large scale applications such as SAP or databases where administrators need to change limits time by time (e.g. on crashes increase core size). And it is unacceptable to restart the service. For safety, all rlim users now either use accessors or doesn't need them due to - locking - the fact a process was just forked and nobody else knows about it yet (and nobody can't thus read/write limits) hence it is safe to modify limits now. The limitation is that we currently stay at ulong internal representation. So the rlim64_is_infinity check is used where value is compared against ULONG_MAX on 32-bit which is the maximum value there. And since internally the limits are held in struct rlimit, converters which are used before and after do_prlimit call in sys_prlimit64 are introduced. Signed-off-by: Jiri Slaby <jslaby@suse.cz>		2010-07-16 09:48:48 +02:00
..
debug	module: fix kdb's illicit use of struct module_use.	2010-06-05 11:17:36 +09:30
gcov
irq	genirq: Deal with desc->set_type() changing desc->chip	2010-06-09 17:05:08 +02:00
power	suspend: Move NVS save/restore code to generic suspend functionality	2010-06-10 11:02:34 -04:00
time	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-07-02 09:52:58 -07:00
trace	perf/tracing: Fix regression of perf losing kprobe events	2010-06-10 20:56:54 -04:00
.gitignore
acct.c	Merge branch 'next' into for-linus	2010-05-18 08:57:00 +10:00
async.c
audit.c
audit.h
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup.c	cgroups: alloc_css_id() increments hierarchy depth	2010-06-04 15:21:45 -07:00
cgroup_freezer.c
compat.c	rlimits: switch more rlimit syscalls to do_prlimit	2010-07-16 09:48:48 +02:00
configs.c
cpu.c	fix cpu_chain section mismatch...	2010-06-01 09:22:50 -07:00
cpuset.c	cpusets: new round-robin rotor for SLAB allocations	2010-05-27 09:12:44 -07:00
cred.c	umh: creds: kill subprocess_info->cred logic	2010-05-27 09:12:45 -07:00
delayacct.c
dma.c
early_res.c
elfcore.c
exec_domain.c	sys_personality: change sys_personality() to accept "unsigned int" instead of u_long	2010-06-04 15:21:45 -07:00
exit.c	proc: turn signal_struct->count into "int nr_threads"	2010-05-27 09:12:47 -07:00
extable.c
fork.c	Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"	2010-05-30 09:00:03 -07:00
freezer.c
futex.c	futex: futex_find_get_task remove credentails check	2010-06-30 15:43:44 -07:00
futex_compat.c
groups.c
hrtimer.c	hrtimer: Avoid double seqlock	2010-05-26 16:15:37 +02:00
hung_task.c
hw_breakpoint.c
itimer.c
kallsyms.c	kdb: core for kgdb back end (2 of 2)	2010-05-20 21:04:21 -05:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c	kexec: fix Oops in crash_shrink_memory()	2010-06-29 15:29:31 -07:00
kfifo.c
kmod.c	call_usermodehelper: UMH_WAIT_EXEC ignores kernel_thread() failure	2010-05-27 09:12:45 -07:00
kprobes.c
ksysfs.c	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
kthread.c
latencytop.c
lockdep.c	lockdep: Add novalidate class for dev->mutex conversion	2010-05-21 09:37:30 -07:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Move kernel/kgdb.c to kernel/debug/debug_core.c	2010-05-20 21:04:18 -05:00
module.c	module: initialize module dynamic debug later	2010-07-04 20:17:22 -07:00
mutex-debug.c
mutex-debug.h
mutex.c	mutex: Fix optimistic spinning vs. BKL	2010-05-19 08:18:44 +02:00
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
padata.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
panic.c	panic: call console_verbose() in panic	2010-05-27 09:12:53 -07:00
params.c
perf_event.c	perf: Fix signed comparison in perf_adjust_period()	2010-06-08 18:43:00 +02:00
pid.c	pids: increase pid_max based on num_possible_cpus	2010-05-27 09:12:51 -07:00
pid_namespace.c
pm_qos_params.c	PM: PM QOS update fix	2010-05-17 00:21:03 +02:00
posix-cpu-timers.c	rlimits: add task_struct to update_rlimit_cpu	2010-07-16 09:48:45 +02:00
posix-timers.c	posix_timer: Fix error path in timer_create	2010-05-27 22:38:15 +02:00
printk.c	printk,kdb: capture printk() when in kdb shell	2010-05-20 21:04:27 -05:00
profile.c	numa: in-kernel profiling: use cpu_to_mem() for per cpu allocations	2010-05-27 09:12:57 -07:00
ptrace.c	ptrace: PTRACE_GETFDPIC: fix the unsafe usage of child->mm	2010-05-27 09:12:44 -07:00
range.c
rcupdate.c
rcutiny.c	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutiny_plugin.h
rcutorture.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-18 08:27:54 -07:00
rcutree.c	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutree.h
rcutree_plugin.h	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutree_trace.c
relay.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
res_counter.c
resource.c
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-07-02 09:52:58 -07:00
sched_clock.c
sched_cpupri.c
sched_cpupri.h
sched_debug.c	proc_sched_show_task(): use get_nr_threads()	2010-05-27 09:12:47 -07:00
sched_fair.c	rcu: apply RCU protection to wake_affine()	2010-06-23 06:50:44 -07:00
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h
seccomp.c
semaphore.c
signal.c	exit: change zap_other_threads() to count sub-threads	2010-05-27 09:12:46 -07:00
slow-work-debugfs.c
slow-work.c
slow-work.h
smp.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
softirq.c	kernel/: fix BUG_ON checks for cpu notifier callbacks direct call	2010-06-04 15:21:45 -07:00
softlockup.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c	sched: Make sure timers have migrated before killing the migration_thread	2010-05-31 08:37:44 +02:00
sys.c	rlimits: implement prlimit64 syscall	2010-07-16 09:48:48 +02:00
sys_ni.c
sysctl.c	pipe: change /proc/sys/fs/pipe-max-pages to byte sized interface	2010-06-03 14:54:39 +02:00
sysctl_binary.c	sysctl: don't use own implementation of hex_to_bin()	2010-05-25 08:07:05 -07:00
sysctl_check.c
taskstats.c
test_kprobes.c
time.c	timekeeping: Fix timezone update	2010-05-24 11:50:38 +02:00
timeconst.pl
timer.c	kernel/: fix BUG_ON checks for cpu notifier callbacks direct call	2010-06-04 15:21:45 -07:00
tracepoint.c	tracing: Let tracepoints have data passed to tracepoint callbacks	2010-05-14 09:50:34 -04:00
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c	kref: remove kref_set	2010-05-21 09:37:29 -07:00
utsname.c
utsname_sysctl.c
wait.c
workqueue.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00