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Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc

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Pull arch signal handling cleanup from Richard Weinberger:
 "This patch series moves all remaining archs to the get_signal(),
  signal_setup_done() and sigsp() functions.

  Currently these archs use open coded variants of the said functions.
  Further, unused parameters get removed from get_signal_to_deliver(),
  tracehook_signal_handler() and signal_delivered().

  At the end of the day we save around 500 lines of code."

* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
  powerpc: Use sigsp()
  openrisc: Use sigsp()
  mn10300: Use sigsp()
  mips: Use sigsp()
  microblaze: Use sigsp()
  metag: Use sigsp()
  m68k: Use sigsp()
  m32r: Use sigsp()
  hexagon: Use sigsp()
  frv: Use sigsp()
  cris: Use sigsp()
  c6x: Use sigsp()
  blackfin: Use sigsp()
  avr32: Use sigsp()
  arm64: Use sigsp()
  arc: Use sigsp()
  sas_ss_flags: Remove nested ternary if
  Rip out get_signal_to_deliver()
  Clean up signal_delivered()
  tracehook_signal_handler: Remove sig, info, ka and regs
  ...
This commit is contained in:
Linus Torvalds
2014-08-09 09:58:12 -07:00
parent ad1f5caf34 059ade650a
commit 63b12bdb0d
46 changed files with 789 additions and 1238 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
arch/x86/um/signal.c
View File

@@ -370,13 +370,12 @@ struct rt_sigframe
char retcode[8];
};
int setup_signal_stack_sc(unsigned long stack_top, int sig,
struct k_sigaction *ka, struct pt_regs *regs,
sigset_t *mask)
int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig,
struct pt_regs *regs, sigset_t *mask)
{
struct sigframe __user *frame;
void __user *restorer;
int err = 0;
int err = 0, sig = ksig->sig;
/* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */
stack_top = ((stack_top + 4) & -16UL) - 4;
@@ -385,8 +384,8 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
return 1;
restorer = frame->retcode;
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
if (ksig->ka.sa.sa_flags & SA_RESTORER)
restorer = ksig->ka.sa.sa_restorer;
err |= __put_user(restorer, &frame->pretcode);
err |= __put_user(sig, &frame->sig);
@@ -410,20 +409,19 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
return err;
PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler;
PT_REGS_AX(regs) = (unsigned long) sig;
PT_REGS_DX(regs) = (unsigned long) 0;
PT_REGS_CX(regs) = (unsigned long) 0;
return 0;
}
int setup_signal_stack_si(unsigned long stack_top, int sig,
struct k_sigaction *ka, struct pt_regs *regs,
siginfo_t *info, sigset_t *mask)
int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig,
struct pt_regs *regs, sigset_t *mask)
{
struct rt_sigframe __user *frame;
void __user *restorer;
int err = 0;
int err = 0, sig = ksig->sig;
stack_top &= -8UL;
frame = (struct rt_sigframe __user *) stack_top - 1;
@@ -431,14 +429,14 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
return 1;
restorer = frame->retcode;
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
if (ksig->ka.sa.sa_flags & SA_RESTORER)
restorer = ksig->ka.sa.sa_restorer;
err |= __put_user(restorer, &frame->pretcode);
err |= __put_user(sig, &frame->sig);
err |= __put_user(&frame->info, &frame->pinfo);
err |= __put_user(&frame->uc, &frame->puc);
err |= copy_siginfo_to_user(&frame->info, info);
err |= copy_siginfo_to_user(&frame->info, &ksig->info);
err |= copy_ucontext_to_user(&frame->uc, &frame->fpstate, mask,
PT_REGS_SP(regs));
@@ -457,7 +455,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
return err;
PT_REGS_SP(regs) = (unsigned long) frame;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler;
PT_REGS_AX(regs) = (unsigned long) sig;
PT_REGS_DX(regs) = (unsigned long) &frame->info;
PT_REGS_CX(regs) = (unsigned long) &frame->uc;
@@ -502,12 +500,11 @@ struct rt_sigframe
struct _fpstate fpstate;
};
int setup_signal_stack_si(unsigned long stack_top, int sig,
struct k_sigaction *ka, struct pt_regs * regs,
siginfo_t *info, sigset_t *set)
int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig,
struct pt_regs *regs, sigset_t *set)
{
struct rt_sigframe __user *frame;
int err = 0;
int err = 0, sig = ksig->sig;
frame = (struct rt_sigframe __user *)
round_down(stack_top - sizeof(struct rt_sigframe), 16);
@@ -517,8 +514,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto out;
if (ka->sa.sa_flags & SA_SIGINFO) {
err |= copy_siginfo_to_user(&frame->info, info);
if (ksig->ka.sa.sa_flags & SA_SIGINFO) {
err |= copy_siginfo_to_user(&frame->info, &ksig->info);
if (err)
goto out;
}
@@ -543,8 +540,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
* already in userspace.
*/
/* x86-64 should always use SA_RESTORER. */
if (ka->sa.sa_flags & SA_RESTORER)
err |= __put_user(ka->sa.sa_restorer, &frame->pretcode);
if (ksig->ka.sa.sa_flags & SA_RESTORER)
err |= __put_user(ksig->ka.sa.sa_restorer, &frame->pretcode);
else
/* could use a vstub here */
return err;
@@ -570,7 +567,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
*/
PT_REGS_SI(regs) = (unsigned long) &frame->info;
PT_REGS_DX(regs) = (unsigned long) &frame->uc;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler;
out:
return err;
}