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author | Andrew Dodd <atd7@cornell.edu> | 2013-02-16 18:41:04 -0500 |
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committer | Andrew Dodd <atd7@cornell.edu> | 2013-02-27 09:19:08 -0500 |
commit | b08797f2afdfc604c3143f8725d058aeef8ddcb2 (patch) | |
tree | c59e963bd6931d4e9f9526034ab402cc551f18ae /kernel/compat.c | |
parent | cbfae70f1dcaf3cc6e93061179dad80caa1597fe (diff) | |
parent | 54ea5b40f067cf098cac639973c6628c6944cfb2 (diff) | |
download | kernel_samsung_smdk4412-b08797f2afdfc604c3143f8725d058aeef8ddcb2.zip kernel_samsung_smdk4412-b08797f2afdfc604c3143f8725d058aeef8ddcb2.tar.gz kernel_samsung_smdk4412-b08797f2afdfc604c3143f8725d058aeef8ddcb2.tar.bz2 |
Merge remote-tracking branch 'kernelorg/linux-3.0.y' into 3_0_64
Conflicts:
arch/arm/Kconfig
arch/arm/include/asm/hwcap.h
arch/arm/kernel/smp.c
arch/arm/plat-samsung/adc.c
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_drv.h
drivers/mmc/core/sd.c
drivers/net/tun.c
drivers/net/usb/usbnet.c
drivers/regulator/max8997.c
drivers/usb/core/hub.c
drivers/usb/host/xhci.h
drivers/usb/serial/qcserial.c
fs/jbd2/transaction.c
include/linux/migrate.h
kernel/sys.c
kernel/time/timekeeping.c
lib/genalloc.c
mm/memory-failure.c
mm/memory_hotplug.c
mm/mempolicy.c
mm/page_alloc.c
mm/vmalloc.c
mm/vmscan.c
mm/vmstat.c
scripts/Kbuild.include
Change-Id: I91e2d85c07320c7ccfc04cf98a448e89bed6ade6
Diffstat (limited to 'kernel/compat.c')
-rw-r--r-- | kernel/compat.c | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/kernel/compat.c b/kernel/compat.c index fc9eb093..3507c93 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -318,25 +318,54 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set) #ifdef __ARCH_WANT_SYS_SIGPROCMASK -asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set, - compat_old_sigset_t __user *oset) +/* + * sys_sigprocmask SIG_SETMASK sets the first (compat) word of the + * blocked set of signals to the supplied signal set + */ +static inline void compat_sig_setmask(sigset_t *blocked, compat_sigset_word set) { - old_sigset_t s; - long ret; - mm_segment_t old_fs; + memcpy(blocked->sig, &set, sizeof(set)); +} - if (set && get_user(s, set)) - return -EFAULT; - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_sigprocmask(how, - set ? (old_sigset_t __user *) &s : NULL, - oset ? (old_sigset_t __user *) &s : NULL); - set_fs(old_fs); - if (ret == 0) - if (oset) - ret = put_user(s, oset); - return ret; +asmlinkage long compat_sys_sigprocmask(int how, + compat_old_sigset_t __user *nset, + compat_old_sigset_t __user *oset) +{ + old_sigset_t old_set, new_set; + sigset_t new_blocked; + + old_set = current->blocked.sig[0]; + + if (nset) { + if (get_user(new_set, nset)) + return -EFAULT; + new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP)); + + new_blocked = current->blocked; + + switch (how) { + case SIG_BLOCK: + sigaddsetmask(&new_blocked, new_set); + break; + case SIG_UNBLOCK: + sigdelsetmask(&new_blocked, new_set); + break; + case SIG_SETMASK: + compat_sig_setmask(&new_blocked, new_set); + break; + default: + return -EINVAL; + } + + set_current_blocked(&new_blocked); + } + + if (oset) { + if (put_user(old_set, oset)) + return -EFAULT; + } + + return 0; } #endif |