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authorPaul Mundt <lethal@linux-sh.org>2008-09-24 14:37:35 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-09-24 14:37:35 +0900
commit1bec157a1f747d038026efabebdee4c929147b63 (patch)
tree500ff4ba3e45c5cfe40021ccb7cec5b56ef6e0bc /arch/sh/kernel
parentaa88f169d6fc4305125b6917d9d5f2e08211f011 (diff)
sh: Force pending restarted system calls to return -EINTR.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/signal_32.c6
-rw-r--r--arch/sh/kernel/signal_64.c18
2 files changed, 18 insertions, 6 deletions
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index be194d0bd7d..69d09c0b349 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -216,6 +216,9 @@ asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
sigset_t set;
int r0;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -250,6 +253,9 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
sigset_t set;
int r0;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index 37bd381a7aa..0582ae4739b 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -375,6 +375,9 @@ asmlinkage int sys_sigreturn(unsigned long r2, unsigned long r3,
sigset_t set;
long long ret;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -412,6 +415,9 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3,
stack_t __user st;
long long ret;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
@@ -539,7 +545,7 @@ static void setup_frame(int sig, struct k_sigaction *ka,
* On SH5 all edited pointers are subject to NEFF
*/
DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
} else {
/*
* Different approach on SH5.
@@ -554,7 +560,7 @@ static void setup_frame(int sig, struct k_sigaction *ka,
*/
DEREF_REG_PR = (unsigned long) frame->retcode | 0x01;
DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
if (__copy_to_user(frame->retcode,
(unsigned long long)sa_default_restorer & (~1), 16) != 0)
@@ -570,7 +576,7 @@ static void setup_frame(int sig, struct k_sigaction *ka,
*/
regs->regs[REG_SP] = (unsigned long) frame;
regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ?
- (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
+ (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
regs->regs[REG_ARG1] = signal; /* Arg for signal handler */
/* FIXME:
@@ -656,7 +662,7 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* On SH5 all edited pointers are subject to NEFF
*/
DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
} else {
/*
* Different approach on SH5.
@@ -672,7 +678,7 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
DEREF_REG_PR = (unsigned long) frame->retcode | 0x01;
DEREF_REG_PR = (DEREF_REG_PR & NEFF_SIGN) ?
- (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
+ (DEREF_REG_PR | NEFF_MASK) : DEREF_REG_PR;
if (__copy_to_user(frame->retcode,
(unsigned long long)sa_default_rt_restorer & (~1), 16) != 0)
@@ -687,7 +693,7 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
*/
regs->regs[REG_SP] = (unsigned long) frame;
regs->regs[REG_SP] = (regs->regs[REG_SP] & NEFF_SIGN) ?
- (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
+ (regs->regs[REG_SP] | NEFF_MASK) : regs->regs[REG_SP];
regs->regs[REG_ARG1] = signal; /* Arg for signal handler */
regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->info;
regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext;